/* roulang page: index */
:root {
            --color-primary: #0F3D2E;
            --color-primary-hover: #155043;
            --color-accent: #D4A34A;
            --color-accent-light: #E0B860;
            --color-copper: #B85C38;
            --color-dark-bg: #161A18;
            --color-card-bg: #1E2420;
            --color-inner-bg: #242B26;
            --color-border: #2E3A32;
            --color-border-highlight: #D4A34A;
            --color-main-text: #F2F0E8;
            --color-sub-text: #B8B5A8;
            --color-weak-text: #7A7A6E;
            --radius-card: 8px;
            --radius-inner: 6px;
            --shadow-card: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.45);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            background-color: var(--color-dark-bg);
            color: var(--color-main-text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
        }

        img {
            max-width: 100%;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ::selection {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 40px;
            }
        }

        @media (min-width: 1280px) {
            .container {
                max-width: 1280px;
                padding: 0 48px;
            }
        }

        /* Navigation */
        .site-nav {
            background-color: rgba(15, 61, 46, 0.95);
            border-bottom: 1px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 8px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            width: 28px;
            height: 28px;
            background-color: var(--color-accent);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-dark-bg);
            font-weight: 800;
            font-size: 14px;
            flex-shrink: 0;
            font-family: "SF Mono", "JetBrains Mono", monospace;
        }

        .nav-logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-main-text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .nav-logo-text span {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-link {
            font-size: 14px;
            color: var(--color-sub-text);
            padding: 8px 14px;
            border-radius: 6px;
            transition: all 0.25s ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--color-main-text);
            background-color: rgba(212, 163, 74, 0.08);
        }

        .nav-link:hover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }

        .nav-link.active {
            color: var(--color-main-text);
            font-weight: 700;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }

        .nav-cta {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 10px 20px;
            border-radius: 6px;
            font-size: 14px;
            white-space: nowrap;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid var(--color-accent);
        }

        .nav-cta:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 20px rgba(212, 163, 74, 0.35);
        }

        .nav-badge {
            background-color: var(--color-copper);
            color: var(--color-main-text);
            font-size: 11px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            margin-left: 4px;
            white-space: nowrap;
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            border: 1px solid var(--color-border);
            background: transparent;
            transition: all 0.25s ease;
        }

        .nav-hamburger:hover {
            border-color: var(--color-border-highlight);
        }

        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-main-text);
            border-radius: 1px;
            transition: all 0.3s ease;
        }

        @media (max-width: 1023px) {
            .nav-hamburger {
                display: flex;
            }
            .nav-links-desktop {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
            .nav-mobile-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                padding: 16px 0 8px;
                border-top: 1px solid var(--color-border);
                margin-top: 12px;
            }
            .nav-mobile-menu.open {
                display: flex;
            }
            .nav-mobile-menu .nav-link {
                display: block;
                text-align: left;
                padding: 12px 16px;
            }
            .nav-mobile-menu .nav-cta {
                display: block;
                text-align: center;
                margin-top: 8px;
                padding: 14px 20px;
            }
        }

        @media (min-width: 1024px) {
            .nav-hamburger {
                display: none;
            }
            .nav-mobile-menu {
                display: none !important;
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            padding: 48px 0 56px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border-bottom: 1px solid var(--color-border);
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(22, 26, 24, 0.88) 0%, rgba(22, 26, 24, 0.55) 50%, rgba(22, 26, 24, 0.72) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 32px;
        }

        .hero-text {
            flex: 1 1 55%;
            min-width: 280px;
        }

        .hero-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--color-main-text);
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }

        .hero-title span {
            color: var(--color-accent);
            border-bottom: 3px solid var(--color-accent);
            padding-bottom: 2px;
        }

        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--color-sub-text);
            line-height: 1.9;
            max-width: 600px;
            margin-bottom: 28px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 24px;
        }

        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 12px;
        }

        .hero-stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-sub-text);
        }

        .hero-stat-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--color-accent);
            flex-shrink: 0;
        }

        .hero-badge-card {
            flex: 0 0 auto;
            background-color: rgba(30, 36, 32, 0.92);
            border: 1px solid var(--color-border-highlight);
            border-radius: 8px;
            padding: 20px 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
            min-width: 160px;
            position: relative;
            z-index: 2;
        }

        .hero-badge-num {
            font-family: "SF Mono", "JetBrains Mono", monospace;
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.1;
            display: block;
        }

        .hero-badge-label {
            font-size: 13px;
            color: var(--color-sub-text);
            margin-top: 6px;
            display: block;
        }

        @media (min-width: 768px) {
            .hero-title {
                font-size: 2.4rem;
            }
        }

        @media (min-width: 1024px) {
            .hero-title {
                font-size: 2.8rem;
            }
            .hero-section {
                padding: 64px 0 72px;
            }
        }

        @media (max-width: 640px) {
            .hero-section {
                padding: 32px 0 40px;
            }
            .hero-badge-card {
                width: 100%;
                max-width: 200px;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .hero-cta-group .btn {
                width: 100%;
                text-align: center;
            }
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 6px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .btn-primary {
            background-color: var(--color-primary);
            color: var(--color-main-text);
            border-color: var(--color-accent);
        }

        .btn-primary:hover {
            background-color: var(--color-primary-hover);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 24px rgba(212, 163, 74, 0.25);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-sub-text);
            border-color: var(--color-border);
        }

        .btn-secondary:hover {
            border-color: var(--color-border-highlight);
            color: var(--color-main-text);
            box-shadow: 0 0 16px rgba(212, 163, 74, 0.15);
        }

        .btn-secondary:active {
            transform: translateY(1px);
        }

        .btn-accent {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            border-color: var(--color-accent);
            font-weight: 700;
        }

        .btn-accent:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 28px rgba(212, 163, 74, 0.4);
        }

        .btn-accent:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
        }

        /* Section shared */
        .section {
            padding: 56px 0;
        }

        @media (min-width: 768px) {
            .section {
                padding: 72px 0;
            }
        }

        @media (min-width: 1024px) {
            .section {
                padding: 88px 0;
            }
        }

        .section-title {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--color-main-text);
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--color-sub-text);
            line-height: 1.9;
            max-width: 720px;
            margin-bottom: 28px;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 2rem;
            }
        }

        @media (min-width: 1024px) {
            .section-title {
                font-size: 2.2rem;
            }
        }

        /* Metric cards */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        @media (min-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }

        .metric-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 20px;
            position: relative;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .metric-card:hover {
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 4px;
            background-color: var(--color-accent);
            border-radius: 0 0 4px 0;
        }

        .metric-value {
            font-family: "SF Mono", "JetBrains Mono", monospace;
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-main-text);
            line-height: 1.2;
            display: block;
        }

        .metric-value .metric-unit {
            font-size: 0.9rem;
            color: var(--color-accent);
            font-weight: 600;
            margin-left: 4px;
            font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
        }

        .metric-label {
            font-size: 14px;
            color: var(--color-sub-text);
            margin-top: 8px;
            display: block;
        }

        .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            margin-top: 8px;
            padding: 2px 8px;
            border-radius: 20px;
        }

        .metric-trend.up {
            color: var(--color-accent);
            background-color: rgba(212, 163, 74, 0.1);
        }

        .metric-trend.down {
            color: var(--color-copper);
            background-color: rgba(184, 92, 56, 0.1);
        }

        /* Service matrix - non-uniform grid */
        .service-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 768px) {
            .service-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
            }
        }

        .service-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 5px;
            background-color: var(--color-accent);
            border-radius: 0 0 5px 0;
        }

        .service-card.featured {
            background-color: var(--color-primary);
            border-color: var(--color-accent);
            grid-column: span 1;
        }

        @media (min-width: 768px) {
            .service-card.featured {
                grid-column: span 2;
            }
        }

        .service-card.featured::before {
            background-color: var(--color-accent);
            width: 6px;
            height: 6px;
        }

        .service-card-img {
            width: 100%;
            height: 160px;
            border-radius: 6px;
            margin-bottom: 16px;
            background-color: var(--color-inner-bg);
            overflow: hidden;
            border: 1px solid var(--color-border);
        }

        .service-card.featured .service-card-img {
            height: 200px;
        }

        .service-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .service-card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 8px;
        }

        .service-card-desc {
            font-size: 0.92rem;
            color: var(--color-sub-text);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .service-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            background-color: rgba(212, 163, 74, 0.12);
            color: var(--color-accent);
            border: 1px solid rgba(212, 163, 74, 0.3);
        }

        .service-badge.hot {
            background-color: rgba(184, 92, 56, 0.12);
            color: var(--color-copper);
            border-color: rgba(184, 92, 56, 0.3);
        }

        .service-badge.new {
            background-color: rgba(212, 163, 74, 0.15);
            color: var(--color-accent);
            border-color: var(--color-accent);
        }

        /* Comparison section */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 768px) {
            .comparison-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        .comparison-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 24px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }

        .comparison-card.disadvantage {
            opacity: 0.72;
            border-color: var(--color-border);
            background-color: rgba(30, 36, 32, 0.7);
        }

        .comparison-card.advantage {
            border-color: var(--color-accent);
            background-color: rgba(15, 61, 46, 0.55);
            box-shadow: 0 0 32px rgba(212, 163, 74, 0.12);
        }

        .comparison-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .comparison-card.advantage .comparison-card-title {
            color: var(--color-accent);
        }

        .comparison-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .comparison-list li {
            font-size: 14px;
            color: var(--color-sub-text);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.7;
        }

        .comparison-list li .icon-check {
            color: var(--color-accent);
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .comparison-list li .icon-x {
            color: var(--color-copper);
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* Info section */
        .info-section {
            background-color: var(--color-inner-bg);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .info-layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
        }

        @media (min-width: 768px) {
            .info-layout {
                grid-template-columns: 1.5fr 1fr;
                gap: 36px;
            }
        }

        .info-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .info-list li {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 6px;
            padding: 16px 18px;
            transition: all 0.3s ease;
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .info-list li:hover {
            border-color: var(--color-border-highlight);
            background-color: var(--color-inner-bg);
            box-shadow: var(--shadow-card);
        }

        .info-list-num {
            font-family: "SF Mono", "JetBrains Mono", monospace;
            font-weight: 700;
            color: var(--color-accent);
            font-size: 14px;
            flex-shrink: 0;
            min-width: 28px;
            padding-top: 2px;
        }

        .info-list-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-main-text);
            display: block;
            margin-bottom: 2px;
        }

        .info-list-desc {
            font-size: 13px;
            color: var(--color-sub-text);
            line-height: 1.7;
        }

        .info-sidebar {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 20px;
        }

        .info-sidebar-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 14px;
        }

        .info-sidebar-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .info-sidebar-list a {
            display: block;
            padding: 10px 14px;
            background-color: var(--color-inner-bg);
            border-radius: 6px;
            font-size: 14px;
            color: var(--color-sub-text);
            border: 1px solid transparent;
            transition: all 0.25s ease;
        }

        .info-sidebar-list a:hover {
            color: var(--color-main-text);
            border-color: var(--color-border-highlight);
            background-color: rgba(212, 163, 74, 0.06);
        }

        /* Entrance matrix */
        .entrance-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }

        @media (min-width: 768px) {
            .entrance-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 18px;
            }
        }

        @media (min-width: 1024px) {
            .entrance-grid {
                grid-template-columns: repeat(6, 1fr);
                gap: 16px;
            }
        }

        .entrance-item {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 18px 14px;
            text-align: center;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            box-shadow: var(--shadow-card);
        }

        .entrance-item:hover {
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .entrance-item-icon {
            width: 40px;
            height: 40px;
            background-color: var(--color-inner-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-accent);
            font-weight: 700;
            border: 1px solid var(--color-border);
        }

        .entrance-item-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-sub-text);
            line-height: 1.4;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .faq-item:focus-within {
            border-color: var(--color-border-highlight);
            outline: 2px solid rgba(212, 163, 74, 0.3);
            outline-offset: 1px;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-main-text);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: background-color 0.25s ease;
            position: relative;
        }

        .faq-question:hover {
            background-color: var(--color-inner-bg);
        }

        .faq-question::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background-color: transparent;
            border-radius: 0 3px 3px 0;
            transition: background-color 0.25s ease;
        }

        .faq-item.open .faq-question::before {
            background-color: var(--color-accent);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-accent);
            font-weight: 700;
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            background-color: var(--color-inner-bg);
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--color-sub-text);
            line-height: 1.85;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        /* CTA Form section */
        .cta-section {
            background-color: var(--color-primary);
            border-top: 1px solid var(--color-accent);
            border-bottom: 1px solid var(--color-accent);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(212, 163, 74, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
            position: relative;
            z-index: 1;
        }

        @media (min-width: 768px) {
            .cta-layout {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
                align-items: center;
            }
        }

        .cta-title {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-main-text);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        @media (min-width: 768px) {
            .cta-title {
                font-size: 1.8rem;
            }
        }

        .cta-desc {
            font-size: 15px;
            color: var(--color-sub-text);
            line-height: 1.9;
            margin-bottom: 20px;
        }

        .cta-form {
            background-color: var(--color-card-bg);
            border: 1px solid rgba(212, 163, 74, 0.4);
            border-radius: 8px;
            padding: 24px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-sub-text);
            margin-bottom: 6px;
        }

        .form-input,
        .form-textarea {
            width: 100%;
            padding: 12px 14px;
            background-color: var(--color-inner-bg);
            border: 1px solid var(--color-border);
            border-radius: 6px;
            font-size: 14px;
            color: var(--color-main-text);
            transition: all 0.25s ease;
        }

        .form-input:focus,
        .form-textarea:focus {
            border-color: var(--color-border-highlight);
            outline: 2px solid rgba(212, 163, 74, 0.25);
            outline-offset: 0;
        }

        .form-textarea {
            min-height: 90px;
            resize: vertical;
        }

        .form-submit {
            width: 100%;
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 14px 20px;
            border-radius: 6px;
            font-size: 15px;
            border: 1px solid var(--color-accent);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .form-submit:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 24px rgba(212, 163, 74, 0.4);
        }

        .form-submit:active {
            transform: translateY(1px);
        }

        .form-trust {
            display: flex;
            gap: 16px;
            margin-top: 14px;
            flex-wrap: wrap;
        }

        .form-trust-item {
            font-size: 12px;
            color: var(--color-weak-text);
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .form-trust-item .trust-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--color-accent);
            flex-shrink: 0;
        }

        /* Social proof */
        .proof-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }

        @media (min-width: 768px) {
            .proof-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }

        .proof-item {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 20px;
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }

        .proof-item:hover {
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card-hover);
        }

        .proof-num {
            font-family: "SF Mono", "JetBrains Mono", monospace;
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-accent);
            display: block;
            margin-bottom: 6px;
        }

        .proof-label {
            font-size: 13px;
            color: var(--color-sub-text);
        }

        /* Hot recommendation */
        .hot-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }

        @media (min-width: 768px) {
            .hot-grid {
                grid-template-columns: 2fr 1fr;
                gap: 20px;
            }
        }

        .hot-card-large {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border-highlight);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            position: relative;
        }

        .hot-card-large:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-accent);
        }

        .hot-card-img {
            width: 100%;
            height: 220px;
            background-color: var(--color-inner-bg);
            overflow: hidden;
        }

        .hot-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hot-card-body {
            padding: 18px 20px;
        }

        .hot-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 20px;
            background-color: var(--color-copper);
            color: var(--color-main-text);
            margin-bottom: 10px;
        }

        .hot-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 6px;
        }

        .hot-card-desc {
            font-size: 14px;
            color: var(--color-sub-text);
            line-height: 1.7;
        }

        .hot-card-small {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 18px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .hot-card-small:hover {
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .hot-card-small-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-main-text);
            margin-bottom: 6px;
        }

        .hot-card-small-desc {
            font-size: 13px;
            color: var(--color-sub-text);
            line-height: 1.7;
        }

        .hot-action {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            margin-top: 10px;
            cursor: pointer;
            transition: color 0.25s ease;
        }

        .hot-action:hover {
            color: var(--color-accent-light);
        }

        /* Footer */
        .site-footer {
            background-color: #0C2A20;
            border-top: 2px solid var(--color-accent);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
            margin-bottom: 32px;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 36px;
            }
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--color-main-text);
            margin-bottom: 12px;
        }

        .footer-brand span {
            color: var(--color-accent);
        }

        .footer-desc {
            font-size: 14px;
            color: var(--color-sub-text);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 14px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--color-weak-text);
        }

        .footer-bottom a {
            color: var(--color-weak-text);
            transition: color 0.25s ease;
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Screenshot stage */
        .screenshot-stage {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 20px;
            box-shadow: var(--shadow-card);
            display: flex;
            gap: 16px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .screenshot-frame {
            flex: 0 0 260px;
            scroll-snap-align: start;
            background-color: var(--color-inner-bg);
            border: 1px solid var(--color-border);
            border-radius: 6px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .screenshot-frame:hover {
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card);
        }

        .screenshot-frame img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }

        .screenshot-frame-label {
            padding: 10px 12px;
            font-size: 13px;
            color: var(--color-sub-text);
            text-align: center;
        }

        @media (max-width: 640px) {
            .screenshot-frame {
                flex: 0 0 200px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #0F3D2E;
            --color-primary-hover: #155043;
            --color-accent: #D4A34A;
            --color-accent-light: #E0B860;
            --color-copper: #B85C38;
            --color-dark-bg: #161A18;
            --color-card-bg: #1E2420;
            --color-inner-bg: #242B26;
            --color-border: #2E3A32;
            --color-border-highlight: #D4A34A;
            --color-main-text: #F2F0E8;
            --color-sub-text: #B8B5A8;
            --color-weak-text: #7A7A6E;
            --radius-card: 8px;
            --radius-inner: 6px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.45);
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            background-color: var(--color-dark-bg);
            color: var(--color-main-text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            margin: 0;
            padding: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
        }

        img {
            max-width: 100%;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 40px;
            }
        }

        @media (min-width: 1280px) {
            .container {
                max-width: 1280px;
                padding: 0 48px;
            }
        }

        /* Navigation */
        .site-nav {
            background-color: rgba(15, 61, 46, 0.95);
            border-bottom: 1px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 8px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            width: 28px;
            height: 28px;
            background-color: var(--color-accent);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-dark-bg);
            font-weight: 800;
            font-size: 14px;
            flex-shrink: 0;
            font-family: "SF Mono", "JetBrains Mono", monospace;
        }

        .nav-logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-main-text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .nav-logo-text span {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-link {
            font-size: 14px;
            color: var(--color-sub-text);
            padding: 8px 14px;
            border-radius: 6px;
            transition: all 0.25s ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--color-main-text);
            background-color: rgba(212, 163, 74, 0.08);
        }

        .nav-link:hover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }

        .nav-link.active {
            color: var(--color-main-text);
            font-weight: 700;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }

        .nav-cta {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 10px 20px;
            border-radius: 6px;
            font-size: 14px;
            white-space: nowrap;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid var(--color-accent);
        }

        .nav-cta:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 20px rgba(212, 163, 74, 0.35);
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            border: 1px solid var(--color-border);
            background: transparent;
            transition: all 0.25s ease;
        }

        .nav-hamburger:hover {
            border-color: var(--color-border-highlight);
        }

        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-main-text);
            border-radius: 1px;
            transition: all 0.3s ease;
        }

        .nav-mobile-menu {
            display: none;
            flex-direction: column;
            width: 100%;
            gap: 6px;
            padding: 16px 0 8px;
            border-top: 1px solid var(--color-border);
            margin-top: 8px;
        }

        .nav-mobile-menu.open {
            display: flex;
        }

        @media (max-width: 1023px) {
            .nav-links-desktop {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
        }

        @media (min-width: 1024px) {
            .nav-mobile-menu {
                display: none !important;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-weak-text);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .separator {
            color: var(--color-weak-text);
        }

        .breadcrumb .current {
            color: var(--color-accent);
        }

        /* Page header */
        .page-header {
            background-color: var(--color-dark-bg);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--color-border);
        }

        .page-header h1 {
            font-size: 28px;
            font-weight: 800;
            color: var(--color-main-text);
            line-height: 1.3;
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }

        .page-header h1 .highlight {
            color: var(--color-accent);
        }

        .page-header .subtitle {
            font-size: 15px;
            color: var(--color-sub-text);
            line-height: 1.8;
            max-width: 720px;
            margin: 0;
        }

        @media (min-width: 768px) {
            .page-header h1 {
                font-size: 34px;
            }
            .page-header .subtitle {
                font-size: 16px;
            }
        }

        @media (min-width: 1024px) {
            .page-header {
                padding: 56px 0 48px;
            }
            .page-header h1 {
                font-size: 38px;
            }
        }

        /* Feature card */
        .feature-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            margin-top: 32px;
            transition: box-shadow 0.3s ease, border-color 0.3s ease;
            position: relative;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 4px;
            background-color: var(--color-accent);
            border-radius: 0 0 4px 0;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-highlight);
        }

        .feature-card .feature-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-inner-bg);
            position: relative;
        }

        .feature-card .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .feature-card:hover .feature-image img {
            transform: scale(1.03);
        }

        .feature-card .feature-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background-color: var(--color-copper);
            color: var(--color-main-text);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 4px;
            letter-spacing: 0.5px;
        }

        .feature-card .feature-body {
            padding: 28px 24px;
        }

        .feature-card .feature-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-main-text);
            margin: 0 0 12px;
            line-height: 1.4;
        }

        .feature-card .feature-desc {
            font-size: 15px;
            color: var(--color-sub-text);
            line-height: 1.9;
            margin: 0 0 16px;
        }

        .feature-card .feature-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--color-weak-text);
        }

        .feature-card .feature-meta .tag {
            background-color: var(--color-inner-bg);
            border: 1px solid var(--color-border);
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 12px;
            color: var(--color-sub-text);
        }

        @media (min-width: 768px) {
            .feature-card {
                display: grid;
                grid-template-columns: 1fr 1fr;
            }
            .feature-card .feature-image {
                aspect-ratio: auto;
                min-height: 280px;
            }
            .feature-card .feature-body {
                padding: 32px 28px;
                display: flex;
                flex-direction: column;
                justify-content: center;
            }
        }

        @media (min-width: 1024px) {
            .feature-card .feature-body {
                padding: 36px 36px;
            }
            .feature-card .feature-title {
                font-size: 24px;
            }
        }

        /* List stream */
        .list-stream {
            margin-top: 32px;
        }

        .section-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-main-text);
            margin: 0 0 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-title::before {
            content: '';
            width: 4px;
            height: 18px;
            background-color: var(--color-accent);
            border-radius: 2px;
            flex-shrink: 0;
        }

        .list-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 16px;
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            transition: all 0.3s ease;
            position: relative;
        }

        .list-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 3px;
            background-color: var(--color-accent);
            border-radius: 0 0 3px 0;
        }

        .list-item:hover {
            background-color: var(--color-inner-bg);
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .list-item .list-image {
            width: 96px;
            height: 72px;
            flex-shrink: 0;
            border-radius: var(--radius-inner);
            overflow: hidden;
            background-color: var(--color-inner-bg);
        }

        .list-item .list-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .list-item .list-content {
            flex: 1;
            min-width: 0;
        }

        .list-item .list-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-main-text);
            margin: 0 0 6px;
            line-height: 1.5;
        }

        .list-item .list-desc {
            font-size: 13px;
            color: var(--color-sub-text);
            line-height: 1.7;
            margin: 0 0 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .list-item .list-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--color-weak-text);
            flex-wrap: wrap;
        }

        .list-item .list-meta .date {
            color: var(--color-weak-text);
        }

        .list-item .list-meta .status {
            background-color: var(--color-inner-bg);
            border: 1px solid var(--color-border);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 11px;
            color: var(--color-accent);
        }

        .list-item .list-meta .status.hot {
            color: var(--color-copper);
            border-color: var(--color-copper);
        }

        @media (min-width: 768px) {
            .list-item {
                padding: 20px 20px;
                gap: 20px;
            }
            .list-item .list-image {
                width: 120px;
                height: 84px;
            }
            .list-item .list-title {
                font-size: 16px;
            }
        }

        /* CTA section */
        .cta-section {
            background-color: var(--color-primary);
            border-top: 1px solid var(--color-accent);
            border-bottom: 1px solid var(--color-accent);
            padding: 48px 0;
            margin-top: 48px;
        }

        .cta-section .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-section .cta-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-main-text);
            margin: 0;
            line-height: 1.4;
        }

        .cta-section .cta-title span {
            color: var(--color-accent);
        }

        .cta-section .cta-desc {
            font-size: 14px;
            color: var(--color-sub-text);
            margin: 8px 0 0;
            line-height: 1.7;
        }

        .btn-primary {
            display: inline-block;
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-inner);
            border: 1px solid var(--color-accent);
            transition: all 0.3s ease;
            white-space: nowrap;
            text-align: center;
        }

        .btn-primary:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 24px rgba(212, 163, 74, 0.4);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-secondary {
            display: inline-block;
            background-color: transparent;
            color: var(--color-sub-text);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-inner);
            border: 1px solid var(--color-border);
            transition: all 0.3s ease;
            white-space: nowrap;
            text-align: center;
        }

        .btn-secondary:hover {
            border-color: var(--color-accent);
            color: var(--color-main-text);
        }

        @media (max-width: 767px) {
            .cta-section .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-section .btn-primary,
            .cta-section .btn-secondary {
                width: 100%;
                text-align: center;
            }
        }

        /* Footer */
        .site-footer {
            background-color: #0C2A20;
            border-top: 1px solid var(--color-accent);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-main-text);
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .footer-brand span {
            color: var(--color-accent);
        }

        .footer-desc {
            font-size: 14px;
            color: var(--color-sub-text);
            line-height: 1.8;
            margin: 0;
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-main-text);
            margin: 0 0 12px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-links li {
            font-size: 13px;
            color: var(--color-sub-text);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border);
            font-size: 12px;
            color: var(--color-weak-text);
        }

        .footer-bottom a {
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 767px) {
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #0F3D2E;
            --color-primary-hover: #155043;
            --color-accent: #D4A34A;
            --color-accent-light: #E0B860;
            --color-copper: #B85C38;
            --color-dark-bg: #161A18;
            --color-card-bg: #1E2420;
            --color-inner-bg: #242B26;
            --color-border: #2E3A32;
            --color-border-highlight: #D4A34A;
            --color-main-text: #F2F0E8;
            --color-sub-text: #B8B5A8;
            --color-weak-text: #7A7A6E;
            --radius-card: 8px;
            --radius-inner: 6px;
            --shadow-card: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.45);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            background-color: var(--color-dark-bg);
            color: var(--color-main-text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            margin: 0;
            padding: 0;
        }
        *, *::before, *::after {
            box-sizing: border-box;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Navigation */
        .site-nav {
            background-color: rgba(15, 61, 46, 0.95);
            border-bottom: 1px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 8px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-logo-icon {
            width: 28px;
            height: 28px;
            background-color: var(--color-accent);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-dark-bg);
            font-weight: 800;
            font-size: 14px;
            flex-shrink: 0;
            font-family: "SF Mono", "JetBrains Mono", monospace;
        }
        .nav-logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-main-text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .nav-logo-text span {
            color: var(--color-accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-link {
            font-size: 14px;
            color: var(--color-sub-text);
            padding: 8px 14px;
            border-radius: 6px;
            transition: all 0.25s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-main-text);
            background-color: rgba(212, 163, 74, 0.08);
        }
        .nav-link:hover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }
        .nav-link.active {
            color: var(--color-main-text);
            font-weight: 700;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }
        .nav-cta {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 10px 20px;
            border-radius: 6px;
            font-size: 14px;
            white-space: nowrap;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid var(--color-accent);
            display: inline-block;
        }
        .nav-cta:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 20px rgba(212, 163, 74, 0.35);
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            border: 1px solid var(--color-border);
            background: transparent;
            transition: all 0.25s ease;
        }
        .nav-hamburger:hover {
            border-color: var(--color-border-highlight);
        }
        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-main-text);
            border-radius: 1px;
            transition: all 0.3s ease;
        }
        .nav-mobile-menu {
            display: none;
            width: 100%;
            flex-direction: column;
            padding: 16px 0 12px;
            gap: 6px;
            border-top: 1px solid var(--color-border);
            margin-top: 8px;
        }
        .nav-mobile-menu.open {
            display: flex;
        }
        .nav-mobile-menu .nav-link {
            font-size: 16px;
            padding: 12px 14px;
            display: block;
            width: 100%;
            text-align: left;
        }
        .nav-mobile-menu .nav-link.active::after,
        .nav-mobile-menu .nav-link:hover::after {
            content: none;
        }
        .nav-mobile-menu .nav-cta {
            margin-top: 8px;
            text-align: center;
            display: block;
            width: 100%;
        }
        @media (max-width: 1024px) {
            .nav-links-desktop {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
        }
        @media (min-width: 1025px) {
            .nav-mobile-menu {
                display: none !important;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-weak-text);
            padding: 20px 0 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb-sep {
            color: var(--color-weak-text);
            font-size: 12px;
        }
        .breadcrumb-current {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Page Header */
        .page-header {
            display: flex;
            align-items: center;
            gap: 32px;
            padding: 32px 0 20px;
            flex-wrap: wrap;
        }
        .page-header-content {
            flex: 1;
            min-width: 280px;
        }
        .page-header h1 {
            font-size: 1.875rem;
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 12px;
            color: var(--color-main-text);
        }
        .page-header h1 span {
            color: var(--color-accent);
        }
        .page-header-desc {
            font-size: 1rem;
            color: var(--color-sub-text);
            line-height: 1.8;
            margin: 0;
            max-width: 720px;
        }
        .page-header-image {
            flex-shrink: 0;
            width: 220px;
            height: 160px;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .page-header-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .page-header-image .badge-corner {
            position: absolute;
            top: 12px;
            left: 12px;
            background-color: var(--color-copper);
            color: var(--color-main-text);
            font-size: 11px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 4px;
            letter-spacing: 0.5px;
        }
        @media (max-width: 768px) {
            .page-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
            .page-header-image {
                width: 100%;
                height: 200px;
            }
            .page-header h1 {
                font-size: 1.5rem;
            }
        }

        /* Section Base */
        .section {
            padding: 48px 0;
        }
        .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 8px;
            color: var(--color-main-text);
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-sub-text);
            margin: 0 0 32px;
            max-width: 720px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 32px 0;
            }
            .section-title {
                font-size: 1.25rem;
            }
        }

        /* Comparison Cards */
        .comparison-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 8px;
        }
        .comparison-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .comparison-card:hover {
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .comparison-card.highlighted {
            border-color: var(--color-accent);
            background-color: #1A2A22;
            box-shadow: 0 0 30px rgba(212, 163, 74, 0.15);
        }
        .comparison-card.highlighted::before {
            content: '';
            position: absolute;
            top: -1px;
            left: -1px;
            right: -1px;
            height: 3px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light), var(--color-accent));
            border-radius: 8px 8px 0 0;
        }
        .comparison-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 4px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            width: fit-content;
        }
        .comparison-tag.tag-standard {
            background-color: rgba(122, 122, 110, 0.2);
            color: var(--color-sub-text);
            border: 1px solid var(--color-border);
        }
        .comparison-tag.tag-recommended {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            border: 1px solid var(--color-accent);
        }
        .comparison-tag.tag-advanced {
            background-color: var(--color-copper);
            color: var(--color-main-text);
            border: 1px solid var(--color-copper);
        }
        .comparison-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--color-main-text);
        }
        .comparison-card .price-tag {
            font-family: "SF Mono", "JetBrains Mono", monospace;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-accent);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .comparison-card .price-unit {
            font-size: 13px;
            font-weight: 400;
            color: var(--color-sub-text);
            margin-left: 4px;
            font-family: "PingFang SC", "Noto Sans SC", sans-serif;
        }
        .comparison-list {
            list-style: none;
            margin: 0 0 20px;
            padding: 0;
            flex: 1;
        }
        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            padding: 8px 0;
            border-bottom: 1px solid var(--color-border);
            font-size: 14px;
            color: var(--color-sub-text);
            line-height: 1.6;
        }
        .comparison-list li:last-child {
            border-bottom: none;
        }
        .comparison-list .check-icon {
            color: var(--color-accent);
            font-weight: 700;
            flex-shrink: 0;
            font-size: 14px;
        }
        .comparison-list .minus-icon {
            color: var(--color-weak-text);
            font-weight: 700;
            flex-shrink: 0;
            font-size: 14px;
        }
        .comparison-card .btn-compare {
            display: inline-block;
            width: 100%;
            padding: 12px 20px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 700;
            text-align: center;
            transition: all 0.3s ease;
            border: 1px solid var(--color-border);
            color: var(--color-sub-text);
            background-color: transparent;
        }
        .comparison-card .btn-compare:hover {
            border-color: var(--color-accent);
            color: var(--color-main-text);
            background-color: rgba(212, 163, 74, 0.08);
        }
        .comparison-card.highlighted .btn-compare {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            border-color: var(--color-accent);
        }
        .comparison-card.highlighted .btn-compare:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 20px rgba(212, 163, 74, 0.35);
        }
        @media (max-width: 1024px) {
            .comparison-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comparison-card.highlighted {
                grid-column: span 2;
            }
        }
        @media (max-width: 768px) {
            .comparison-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .comparison-card.highlighted {
                grid-column: span 1;
            }
            .comparison-card {
                padding: 20px;
            }
        }

        /* Supplementary explanation */
        .supplement-block {
            margin-top: 32px;
            background-color: var(--color-inner-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .supplement-block h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0;
            color: var(--color-main-text);
        }
        .supplement-block p {
            margin: 0;
            font-size: 15px;
            color: var(--color-sub-text);
            line-height: 1.8;
        }
        .supplement-block .highlight-text {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Additional comparison highlights */
        .comparison-highlights {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 24px;
        }
        .highlight-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-inner);
            padding: 16px 20px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            transition: all 0.3s ease;
        }
        .highlight-card:hover {
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card);
        }
        .highlight-icon {
            width: 32px;
            height: 32px;
            border-radius: 4px;
            background-color: rgba(212, 163, 74, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-weight: 700;
            flex-shrink: 0;
            font-size: 14px;
        }
        .highlight-card-content h4 {
            font-size: 15px;
            font-weight: 700;
            margin: 0 0 4px;
            color: var(--color-main-text);
        }
        .highlight-card-content p {
            font-size: 13px;
            color: var(--color-sub-text);
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .comparison-highlights {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ */
        .faq-section {
            padding: 48px 0;
        }
        .faq-list {
            max-width: 800px;
            margin-top: 16px;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-inner);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
            background-color: var(--color-card-bg);
        }
        .faq-item:hover {
            border-color: rgba(212, 163, 74, 0.4);
        }
        .faq-item.active {
            border-color: var(--color-border-highlight);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-main-text);
            text-align: left;
            transition: all 0.25s ease;
            background: none;
            border: none;
            cursor: pointer;
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 4px;
            background-color: var(--color-inner-bg);
            color: var(--color-sub-text);
            font-size: 16px;
            font-weight: 700;
            transition: all 0.3s ease;
        }
        .faq-item.active .faq-icon {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px 16px;
            font-size: 14px;
            color: var(--color-sub-text);
            line-height: 1.8;
            border-left: 3px solid var(--color-accent);
            margin-left: 20px;
            padding-left: 16px;
        }

        /* CTA Section */
        .cta-section {
            padding: 64px 0;
            background-color: var(--color-primary);
            border-top: 1px solid var(--color-accent);
            border-bottom: 1px solid var(--color-accent);
        }
        .cta-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .cta-content h2 {
            font-size: 1.75rem;
            font-weight: 800;
            margin: 0 0 12px;
            color: var(--color-main-text);
        }
        .cta-content h2 span {
            color: var(--color-accent);
        }
        .cta-content p {
            font-size: 15px;
            color: var(--color-sub-text);
            margin: 0 0 16px;
            line-height: 1.8;
        }
        .cta-trust {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .cta-trust-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--color-weak-text);
        }
        .cta-trust-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background-color: rgba(212, 163, 74, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 11px;
            font-weight: 700;
        }
        .cta-form {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }
        .cta-form h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 0 16px;
            color: var(--color-main-text);
        }
        .form-group {
            margin-bottom: 14px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            color: var(--color-sub-text);
            margin-bottom: 4px;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            background-color: var(--color-inner-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-inner);
            padding: 10px 14px;
            font-size: 14px;
            color: var(--color-main-text);
            transition: all 0.25s ease;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--color-border-highlight);
            outline: 1px solid var(--color-border-highlight);
            outline-offset: 0;
        }
        .form-group textarea {
            min-height: 80px;
            resize: vertical;
        }
        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23B8B5A8' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
        }
        .form-group select option {
            background-color: var(--color-card-bg);
            color: var(--color-main-text);
        }
        .btn-submit {
            width: 100%;
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 12px 24px;
            border-radius: 6px;
            font-size: 15px;
            border: 1px solid var(--color-accent);
            transition: all 0.3s ease;
        }
        .btn-submit:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 20px rgba(212, 163, 74, 0.35);
        }
        .btn-submit:active {
            transform: translateY(1px);
        }
        @media (max-width: 768px) {
            .cta-wrapper {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-content h2 {
                font-size: 1.4rem;
            }
            .cta-section {
                padding: 40px 0;
            }
        }

        /* Footer */
        .site-footer {
            background-color: #0C2A20;
            border-top: 1px solid var(--color-accent);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-main-text);
            margin-bottom: 8px;
        }
        .footer-brand span {
            color: var(--color-accent);
        }
        .footer-desc {
            font-size: 13px;
            color: var(--color-sub-text);
            line-height: 1.8;
            margin: 0;
        }
        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-main-text);
            margin: 0 0 12px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--color-weak-text);
        }
        .footer-bottom a {
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* Hero image badge */
        .hero-image-badge {
            position: absolute;
            bottom: 12px;
            right: 12px;
            background-color: rgba(22, 26, 24, 0.85);
            border: 1px solid var(--color-accent);
            border-radius: 6px;
            padding: 6px 12px;
            font-family: "SF Mono", "JetBrains Mono", monospace;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-accent);
        }

/* roulang page: category4 */
:root {
            --color-primary: #0F3D2E;
            --color-primary-hover: #155043;
            --color-accent: #D4A34A;
            --color-accent-light: #E0B860;
            --color-copper: #B85C38;
            --color-dark-bg: #161A18;
            --color-card-bg: #1E2420;
            --color-inner-bg: #242B26;
            --color-border: #2E3A32;
            --color-border-highlight: #D4A34A;
            --color-main-text: #F2F0E8;
            --color-sub-text: #B8B5A8;
            --color-weak-text: #7A7A6E;
            --radius-card: 8px;
            --radius-inner: 6px;
            --shadow-card: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.45);
            --font-mono: "SF Mono", "JetBrains Mono", monospace;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            background-color: var(--color-dark-bg);
            color: var(--color-main-text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            margin: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 40px;
        }
        @media (max-width: 1024px) {
            .container { padding: 0 32px; }
        }
        @media (max-width: 768px) {
            .container { padding: 0 20px; }
        }

        /* Navigation */
        .site-nav {
            background-color: rgba(15, 61, 46, 0.95);
            border-bottom: 1px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 8px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-logo-icon {
            width: 28px;
            height: 28px;
            background-color: var(--color-accent);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-dark-bg);
            font-weight: 800;
            font-size: 14px;
            flex-shrink: 0;
            font-family: var(--font-mono);
        }
        .nav-logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-main-text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .nav-logo-text span {
            color: var(--color-accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-link {
            font-size: 14px;
            color: var(--color-sub-text);
            padding: 8px 14px;
            border-radius: 6px;
            transition: all 0.25s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-main-text);
            background-color: rgba(212, 163, 74, 0.08);
        }
        .nav-link:hover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }
        .nav-link.active {
            color: var(--color-main-text);
            font-weight: 700;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }
        .nav-cta {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 10px 20px;
            border-radius: 6px;
            font-size: 14px;
            white-space: nowrap;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid var(--color-accent);
        }
        .nav-cta:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 20px rgba(212, 163, 74, 0.35);
        }
        .nav-badge {
            background-color: var(--color-copper);
            color: var(--color-main-text);
            font-size: 11px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            margin-left: 4px;
            white-space: nowrap;
            display: inline-block;
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            border: 1px solid var(--color-border);
            background: transparent;
            transition: all 0.25s ease;
        }
        .nav-hamburger:hover {
            border-color: var(--color-border-highlight);
        }
        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-main-text);
            border-radius: 1px;
            transition: all 0.3s ease;
        }
        .nav-mobile-menu {
            display: none;
            flex-direction: column;
            width: 100%;
            background-color: rgba(15, 61, 46, 0.98);
            padding: 16px 0 20px 0;
            border-top: 1px solid var(--color-border);
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .nav-mobile-menu.open {
            max-height: 500px;
            padding: 16px 0 20px 0;
        }
        .nav-mobile-menu .nav-link {
            display: block;
            padding: 12px 20px;
            font-size: 16px;
            border-bottom: 1px solid rgba(46, 58, 50, 0.6);
            border-radius: 0;
        }
        .nav-mobile-menu .nav-link.active::after {
            display: none;
        }
        .nav-mobile-menu .nav-cta {
            display: block;
            margin: 16px 20px 0 20px;
            text-align: center;
        }
        @media (max-width: 900px) {
            .nav-links-desktop {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-mobile-menu {
                display: flex;
            }
        }
        @media (min-width: 901px) {
            .nav-mobile-menu {
                display: none !important;
            }
        }

        /* Page Header */
        .page-header {
            background-color: var(--color-primary);
            border-bottom: 1px solid var(--color-border);
            padding: 40px 0 36px;
            position: relative;
            overflow: hidden;
        }
        .page-header::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(212,163,74,0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .breadcrumbs {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--color-sub-text);
            margin-bottom: 14px;
            flex-wrap: wrap;
        }
        .breadcrumbs a {
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }
        .breadcrumbs a:hover {
            color: var(--color-accent);
        }
        .breadcrumbs .separator {
            color: var(--color-weak-text);
            user-select: none;
        }
        .page-header h1 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-main-text);
            margin: 0 0 12px;
            max-width: 800px;
        }
        .page-header .header-desc {
            font-size: 16px;
            color: var(--color-sub-text);
            max-width: 700px;
            line-height: 1.8;
        }
        @media (max-width: 768px) {
            .page-header {
                padding: 28px 0 24px;
            }
            .page-header h1 {
                font-size: 24px;
            }
        }

        /* Data Overview Section */
        .data-overview-section {
            padding: 48px 0 24px;
        }
        .data-overview-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .data-overview-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-highlight);
        }
        .data-overview-text {
            padding: 28px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .data-overview-text h2 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--color-main-text);
        }
        .data-overview-text p {
            color: var(--color-sub-text);
            font-size: 15px;
            line-height: 1.8;
        }
        .data-overview-img {
            background-color: var(--color-inner-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 240px;
        }
        .data-overview-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        @media (max-width: 768px) {
            .data-overview-card {
                grid-template-columns: 1fr;
            }
            .data-overview-text {
                padding: 20px;
            }
            .data-overview-img {
                min-height: 180px;
            }
        }

        /* Metric Cards Section */
        .metric-section {
            padding: 32px 0 48px;
        }
        .metric-section h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--color-main-text);
            line-height: 1.3;
        }
        .metric-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .metric-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px 22px;
            position: relative;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
            overflow: hidden;
        }
        .metric-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-highlight);
            transform: translateY(-2px);
        }
        .metric-card .card-corner {
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 4px;
            background-color: var(--color-accent);
            border-radius: 0 0 4px 0;
        }
        .metric-card .metric-label {
            font-size: 13px;
            color: var(--color-sub-text);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .metric-card .metric-value {
            font-family: var(--font-mono);
            font-size: 32px;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        .metric-card .metric-unit {
            font-size: 14px;
            color: var(--color-sub-text);
            font-weight: 500;
            margin-left: 4px;
            font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
        }
        .metric-card .trend-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            margin-top: 10px;
            background-color: rgba(212, 163, 74, 0.15);
            color: var(--color-accent);
        }
        .metric-card .trend-badge.down {
            background-color: rgba(184, 92, 56, 0.18);
            color: var(--color-copper);
        }
        .metric-card .progress-bar-wrap {
            margin-top: 14px;
            background-color: var(--color-inner-bg);
            border-radius: 20px;
            height: 8px;
            overflow: hidden;
            position: relative;
        }
        .metric-card .progress-bar-fill {
            height: 100%;
            border-radius: 20px;
            background-color: var(--color-accent);
            width: 0%;
            transition: width 0.8s ease;
        }
        .metric-card .progress-ring {
            margin-top: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .metric-card .ring-svg {
            width: 52px;
            height: 52px;
            flex-shrink: 0;
        }
        .metric-card .ring-label {
            font-size: 13px;
            color: var(--color-sub-text);
        }
        @media (max-width: 1024px) {
            .metric-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .metric-grid {
                grid-template-columns: 1fr;
            }
            .metric-card .metric-value {
                font-size: 28px;
            }
        }

        /* Data Interpretation List */
        .data-interpret-section {
            padding: 32px 0 56px;
        }
        .data-interpret-section h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--color-main-text);
            line-height: 1.3;
        }
        .interpret-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .interpret-item {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            transition: border-color 0.3s ease, background-color 0.3s ease;
            box-shadow: var(--shadow-card);
        }
        .interpret-item:hover {
            border-color: var(--color-border-highlight);
            background-color: var(--color-inner-bg);
        }
        .interpret-icon {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 6px;
            background-color: var(--color-inner-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 18px;
            color: var(--color-accent);
            border: 1px solid var(--color-border);
        }
        .interpret-content {
            flex: 1;
        }
        .interpret-tag {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 6px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .interpret-tag .arrow {
            font-family: var(--font-mono);
            font-size: 16px;
            font-weight: 800;
        }
        .interpret-tag .arrow.down {
            color: var(--color-copper);
        }
        .interpret-text {
            font-size: 15px;
            color: var(--color-sub-text);
            line-height: 1.8;
        }
        @media (max-width: 640px) {
            .interpret-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }
            .interpret-icon {
                width: 30px;
                height: 30px;
                font-size: 16px;
            }
        }

        /* CTA Section */
        .cta-section {
            padding: 56px 0 64px;
            background-color: var(--color-primary);
            border-top: 1px solid var(--color-accent);
            border-bottom: 1px solid var(--color-border);
        }
        .cta-card {
            background-color: var(--color-dark-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            box-shadow: var(--shadow-card);
        }
        .cta-card h2 {
            font-size: 24px;
            font-weight: 800;
            color: var(--color-main-text);
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .cta-card p {
            color: var(--color-sub-text);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .cta-trust {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .cta-trust span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--color-weak-text);
            background-color: var(--color-inner-bg);
            padding: 6px 12px;
            border-radius: 6px;
            border: 1px solid var(--color-border);
        }
        .cta-trust .icon {
            color: var(--color-accent);
            font-weight: 700;
        }
        .cta-form {
            background-color: var(--color-inner-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-inner);
            padding: 24px;
        }
        .cta-form label {
            display: block;
            font-size: 13px;
            color: var(--color-sub-text);
            margin-bottom: 6px;
            font-weight: 600;
        }
        .cta-form input,
        .cta-form textarea {
            width: 100%;
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-inner);
            padding: 10px 14px;
            color: var(--color-main-text);
            font-size: 14px;
            margin-bottom: 14px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            resize: vertical;
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(212, 163, 74, 0.15);
        }
        .cta-form .submit-btn {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 12px 28px;
            border-radius: var(--radius-inner);
            font-size: 15px;
            border: 1px solid var(--color-accent);
            transition: all 0.3s ease;
            width: 100%;
            cursor: pointer;
        }
        .cta-form .submit-btn:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 16px rgba(212, 163, 74, 0.3);
        }
        .cta-form .submit-btn:active {
            transform: translateY(1px);
        }
        @media (max-width: 768px) {
            .cta-card {
                grid-template-columns: 1fr;
                padding: 24px 20px;
            }
            .cta-form {
                padding: 18px;
            }
        }

        /* Footer */
        .site-footer {
            background-color: #0C2A20;
            border-top: 1px solid var(--color-accent);
            padding: 48px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-main-text);
            margin-bottom: 12px;
        }
        .footer-brand span {
            color: var(--color-accent);
        }
        .footer-desc {
            font-size: 14px;
            color: var(--color-sub-text);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 14px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: var(--color-weak-text);
        }
        .footer-bottom a {
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 540px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }
        }

        /* Misc */
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 20px;
            line-height: 1.3;
        }
        .accent-text {
            color: var(--color-accent);
        }
        .copper-text {
            color: var(--color-copper);
        }
        .mono {
            font-family: var(--font-mono);
        }
        .focus-visible:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }

/* roulang page: category3 */
:root {
            --color-primary: #0F3D2E;
            --color-primary-hover: #155043;
            --color-accent: #D4A34A;
            --color-accent-light: #E0B860;
            --color-copper: #B85C38;
            --color-dark-bg: #161A18;
            --color-card-bg: #1E2420;
            --color-inner-bg: #242B26;
            --color-border: #2E3A32;
            --color-border-highlight: #D4A34A;
            --color-main-text: #F2F0E8;
            --color-sub-text: #B8B5A8;
            --color-weak-text: #7A7A6E;
            --radius-card: 8px;
            --radius-inner: 6px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.45);
            --font-body: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "JetBrains Mono", monospace;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--color-dark-bg);
            color: var(--color-main-text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ::selection {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
        }

        :focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 48px;
        }

        @media (max-width: 1024px) {
            .container {
                padding: 0 32px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 20px;
            }
        }

        /* Navigation */
        .site-nav {
            background-color: rgba(15, 61, 46, 0.95);
            border-bottom: 1px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 8px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            width: 28px;
            height: 28px;
            background-color: var(--color-accent);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-dark-bg);
            font-weight: 800;
            font-size: 14px;
            flex-shrink: 0;
            font-family: var(--font-mono);
            letter-spacing: -0.5px;
        }

        .nav-logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-main-text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .nav-logo-text span {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-link {
            font-size: 14px;
            color: var(--color-sub-text);
            padding: 8px 14px;
            border-radius: 6px;
            transition: all 0.25s ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--color-main-text);
            background-color: rgba(212, 163, 74, 0.08);
        }

        .nav-link:hover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }

        .nav-link.active {
            color: var(--color-main-text);
            font-weight: 700;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }

        .nav-cta {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 10px 20px;
            border-radius: 6px;
            font-size: 14px;
            white-space: nowrap;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid var(--color-accent);
        }

        .nav-cta:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 20px rgba(212, 163, 74, 0.35);
        }

        .nav-badge {
            background-color: var(--color-copper);
            color: var(--color-main-text);
            font-size: 11px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            margin-left: 4px;
            white-space: nowrap;
            display: inline-block;
            animation: badgePulse 2.5s ease-in-out infinite;
        }

        @keyframes badgePulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.6;
            }
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            border: 1px solid var(--color-border);
            background: transparent;
            transition: all 0.25s ease;
            z-index: 110;
        }

        .nav-hamburger:hover {
            border-color: var(--color-border-highlight);
        }

        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-main-text);
            border-radius: 1px;
            transition: all 0.3s ease;
        }

        .nav-hamburger.is-open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-hamburger.is-open span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.is-open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .nav-mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 16px 0;
            border-top: 1px solid var(--color-border);
            margin-top: 8px;
            width: 100%;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .nav-mobile-menu.is-open {
            max-height: 600px;
            padding: 16px 0;
        }

        .nav-mobile-menu .nav-link {
            padding: 12px 16px;
            font-size: 15px;
            display: block;
        }

        .nav-mobile-menu .nav-link.active::after {
            display: none;
        }
        .nav-mobile-menu .nav-link.active {
            background-color: rgba(212, 163, 74, 0.12);
            color: var(--color-accent);
        }

        .nav-mobile-menu .nav-cta {
            display: block;
            text-align: center;
            margin-top: 8px;
            padding: 14px 20px;
            font-size: 15px;
        }

        @media (max-width: 1024px) {
            .nav-links-desktop {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-mobile-menu {
                display: flex;
            }
        }

        @media (min-width: 1025px) {
            .nav-mobile-menu {
                display: none !important;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-weak-text);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .separator {
            color: var(--color-weak-text);
            pointer-events: none;
        }
        .breadcrumb .current {
            color: var(--color-main-text);
            font-weight: 600;
        }

        /* Page Header */
        .page-header {
            padding-top: 48px;
            padding-bottom: 40px;
            background: linear-gradient(180deg, rgba(15, 61, 46, 0.35) 0%, rgba(22, 26, 24, 1) 100%);
            border-bottom: 1px solid var(--color-border);
        }

        .page-header-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            align-items: center;
        }

        .page-header h1 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-main-text);
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }

        .page-header h1 .highlight {
            color: var(--color-accent);
            position: relative;
        }

        .page-header h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            right: 0;
            height: 3px;
            background-color: var(--color-accent);
            border-radius: 2px;
            opacity: 0.5;
        }

        .page-header-desc {
            color: var(--color-sub-text);
            font-size: 15px;
            line-height: 1.9;
            max-width: 620px;
        }

        .page-header-image {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            aspect-ratio: 4/3;
            background-color: var(--color-inner-bg);
        }

        .page-header-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .page-header-image:hover img {
            transform: scale(1.03);
        }
        .page-header-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(to top, rgba(22, 26, 24, 0.9), transparent);
            pointer-events: none;
        }
        .page-header-image .badge-on-image {
            position: absolute;
            bottom: 16px;
            left: 16px;
            z-index: 5;
            background-color: rgba(15, 61, 46, 0.9);
            border: 1px solid var(--color-accent);
            color: var(--color-main-text);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(6px);
        }

        @media (max-width: 768px) {
            .page-header-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .page-header h1 {
                font-size: 1.6rem;
            }
            .page-header {
                padding-top: 32px;
                padding-bottom: 28px;
            }
            .page-header-image {
                aspect-ratio: 16/9;
                order: -1;
            }
        }

        /* Section common */
        .section {
            padding-top: 72px;
            padding-bottom: 72px;
        }
        .section-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }

        .section-header {
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: 1.75rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-main-text);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .section-header h2 .highlight {
            color: var(--color-accent);
        }
        .section-header p {
            color: var(--color-sub-text);
            font-size: 15px;
            line-height: 1.9;
            max-width: 680px;
        }

        @media (max-width: 768px) {
            .section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .section-sm {
                padding-top: 32px;
                padding-bottom: 32px;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
        }

        /* Steps Bar */
        .steps-wrapper {
            position: relative;
            padding: 20px 0;
        }

        .steps-bar {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 0;
            position: relative;
            padding: 0 10px;
        }

        .steps-bar::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 40px;
            right: 40px;
            height: 1px;
            background-color: var(--color-border);
            z-index: 0;
        }

        .step-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 8px;
        }

        .step-node {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            border: 2px solid var(--color-border);
            background-color: var(--color-card-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
            font-size: 18px;
            font-weight: 700;
            color: var(--color-weak-text);
            transition: all 0.35s ease;
            position: relative;
            flex-shrink: 0;
            cursor: default;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        .step-node.completed {
            background-color: var(--color-primary);
            border-color: var(--color-accent);
            color: var(--color-accent);
        }

        .step-node.completed::after {
            content: '✓';
            position: absolute;
            top: -6px;
            right: -6px;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-size: 12px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid var(--color-dark-bg);
        }

        .step-node.current {
            background-color: var(--color-accent);
            border-color: var(--color-accent);
            color: var(--color-dark-bg);
            box-shadow: 0 0 30px rgba(212, 163, 74, 0.45);
            animation: currentStepGlow 2s ease-in-out infinite;
        }

        @keyframes currentStepGlow {
            0%,
            100% {
                box-shadow: 0 0 24px rgba(212, 163, 74, 0.35);
            }
            50% {
                box-shadow: 0 0 40px rgba(212, 163, 74, 0.6);
            }
        }

        .step-node.pending {
            background-color: var(--color-inner-bg);
            border-color: var(--color-border);
            color: var(--color-weak-text);
        }

        .step-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-main-text);
            margin-top: 16px;
            line-height: 1.4;
        }
        .step-item.pending .step-title {
            color: var(--color-weak-text);
        }

        .step-desc {
            font-size: 13px;
            color: var(--color-sub-text);
            margin-top: 6px;
            line-height: 1.6;
            max-width: 160px;
        }
        .step-item.pending .step-desc {
            color: var(--color-weak-text);
        }

        .step-arrow-mobile {
            display: none;
        }

        @media (max-width: 768px) {
            .steps-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 24px;
                padding: 0;
            }
            .steps-bar::before {
                display: none;
            }
            .step-item {
                flex-direction: row;
                align-items: flex-start;
                text-align: left;
                width: 100%;
                gap: 16px;
                padding: 0;
                position: relative;
            }
            .step-item:not(:last-child)::after {
                content: '';
                position: absolute;
                left: 27px;
                top: 56px;
                bottom: -24px;
                width: 1px;
                background-color: var(--color-border);
                z-index: 0;
            }
            .step-node {
                width: 48px;
                height: 48px;
                font-size: 16px;
                flex-shrink: 0;
                z-index: 1;
            }
            .step-title {
                margin-top: 2px;
                font-size: 15px;
            }
            .step-desc {
                margin-top: 4px;
                max-width: none;
                font-size: 13px;
            }
            .step-node.completed::after {
                width: 18px;
                height: 18px;
                font-size: 10px;
                top: -4px;
                right: -4px;
            }
        }

        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 40px;
            margin-top: 8px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--color-accent) 0%, var(--color-border) 60%, transparent 100%);
            border-radius: 1px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 28px;
            padding: 20px 24px;
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-item:hover {
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -32px;
            top: 28px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: var(--color-dark-bg);
            border: 3px solid var(--color-border);
            transition: all 0.3s ease;
        }

        .timeline-item.completed::before {
            border-color: var(--color-accent);
            background-color: var(--color-accent);
            box-shadow: 0 0 12px rgba(212, 163, 74, 0.45);
        }
        .timeline-item.active::before {
            border-color: var(--color-accent);
            background-color: var(--color-dark-bg);
            box-shadow: 0 0 16px rgba(212, 163, 74, 0.55);
            animation: timelinePulse 2s ease-in-out infinite;
        }
        @keyframes timelinePulse {
            0%,
            100% {
                box-shadow: 0 0 10px rgba(212, 163, 74, 0.35);
            }
            50% {
                box-shadow: 0 0 22px rgba(212, 163, 74, 0.65);
            }
        }

        .timeline-phase {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex-shrink: 0;
            min-width: 90px;
        }

        .timeline-phase-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-main-text);
            font-family: var(--font-mono);
            letter-spacing: 0.5px;
        }

        .timeline-badge {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 20px;
            font-size: 11px;
            font-weight: 700;
            width: fit-content;
            white-space: nowrap;
        }

        .timeline-badge.completed {
            background-color: rgba(212, 163, 74, 0.15);
            color: var(--color-accent);
            border: 1px solid rgba(212, 163, 74, 0.4);
        }
        .timeline-badge.active {
            background-color: rgba(184, 92, 56, 0.2);
            color: var(--color-copper);
            border: 1px solid rgba(184, 92, 56, 0.5);
        }
        .timeline-badge.pending {
            background-color: rgba(122, 122, 110, 0.15);
            color: var(--color-weak-text);
            border: 1px solid rgba(122, 122, 110, 0.3);
        }

        .timeline-content h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .timeline-content p {
            font-size: 14px;
            color: var(--color-sub-text);
            line-height: 1.8;
        }

        @media (max-width: 640px) {
            .timeline {
                padding-left: 28px;
            }
            .timeline::before {
                left: 10px;
            }
            .timeline-item {
                padding: 16px 18px;
                flex-direction: column;
                gap: 10px;
            }
            .timeline-item::before {
                left: -24px;
                top: 22px;
                width: 8px;
                height: 8px;
            }
            .timeline-phase {
                flex-direction: row;
                align-items: center;
                gap: 8px;
                min-width: auto;
            }
            .timeline-content h3 {
                font-size: 15px;
            }
        }

        /* Value Cards */
        .value-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .value-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px 28px 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .value-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--color-accent);
            border-radius: 4px 0 0 4px;
            opacity: 0.7;
        }
        .value-card:hover {
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .value-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .value-card p {
            font-size: 14px;
            color: var(--color-sub-text);
            line-height: 1.8;
        }
        .value-card .value-number {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 800;
            color: var(--color-accent);
            display: block;
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }

        @media (max-width: 768px) {
            .value-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .value-card {
                padding: 20px;
            }
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 850px;
        }

        .faq-item {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(212, 163, 74, 0.4);
        }
        .faq-item.is-open {
            border-color: var(--color-border-highlight);
            box-shadow: 0 0 20px rgba(212, 163, 74, 0.15);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            width: 100%;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-main-text);
            line-height: 1.6;
            transition: all 0.25s ease;
            background: transparent;
            border: none;
            position: relative;
        }

        .faq-question:hover {
            color: var(--color-accent);
            background-color: rgba(212, 163, 74, 0.05);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-sub-text);
            transition: all 0.3s ease;
            font-family: var(--font-mono);
        }
        .faq-item.is-open .faq-question .faq-icon {
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: rotate(135deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .faq-item.is-open .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--color-sub-text);
            line-height: 1.9;
        }

        @media (max-width: 640px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-item.is-open .faq-answer {
                padding: 0 16px 14px;
            }
            .faq-answer p {
                font-size: 13px;
            }
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(180deg, var(--color-dark-bg) 0%, rgba(15, 61, 46, 0.6) 50%, var(--color-dark-bg) 100%);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            padding-top: 64px;
            padding-bottom: 64px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            max-width: 700px;
            height: 2px;
            background: linear-gradient(to right, transparent, var(--color-accent), transparent);
            border-radius: 1px;
            opacity: 0.6;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-content h2 {
            font-size: 1.9rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-main-text);
            margin-bottom: 14px;
        }
        .cta-content h2 .highlight {
            color: var(--color-accent);
        }
        .cta-content p {
            color: var(--color-sub-text);
            font-size: 15px;
            line-height: 1.9;
            max-width: 520px;
        }

        .cta-form-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border-highlight);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: 0 0 40px rgba(212, 163, 74, 0.12);
        }

        .cta-form-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 18px;
            text-align: center;
        }

        .form-group {
            margin-bottom: 14px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            color: var(--color-sub-text);
            margin-bottom: 6px;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 14px;
            background-color: var(--color-inner-bg);
            border: 1px solid var(--color-border);
            border-radius: 6px;
            color: var(--color-main-text);
            font-size: 14px;
            transition: all 0.25s ease;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(212, 163, 74, 0.18);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 80px;
        }

        .form-submit {
            width: 100%;
            padding: 14px 24px;
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            font-size: 15px;
            border-radius: 6px;
            border: 1px solid var(--color-accent);
            cursor: pointer;
            transition: all 0.3s ease;
            letter-spacing: 1px;
            margin-top: 6px;
        }
        .form-submit:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 4px 20px rgba(212, 163, 74, 0.4);
        }
        .form-submit:active {
            transform: translateY(1px);
        }

        .trust-badges {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 16px;
            flex-wrap: wrap;
        }
        .trust-badge {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: var(--color-weak-text);
        }
        .trust-badge .icon {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background-color: var(--color-primary);
            border: 1px solid var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 9px;
            font-weight: 800;
        }

        @media (max-width: 768px) {
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-section {
                padding-top: 44px;
                padding-bottom: 44px;
            }
            .cta-content h2 {
                font-size: 1.5rem;
            }
        }

        /* Footer */
        .site-footer {
            background-color: #0C2A20;
            border-top: 2px solid var(--color-accent);
            padding-top: 48px;
            padding-bottom: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--color-border);
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--color-main-text);
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .footer-brand span {
            color: var(--color-accent);
        }
        .footer-desc {
            font-size: 13px;
            color: var(--color-sub-text);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--color-sub-text);
            transition: color 0.25s ease, padding-left 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            font-size: 12px;
            color: var(--color-weak-text);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a {
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .site-footer {
                padding-top: 32px;
            }
        }

        /* Button styles */
        .btn-primary {
            background-color: var(--color-primary);
            color: var(--color-main-text);
            border: 1px solid var(--color-accent);
            padding: 12px 28px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 15px;
            transition: all 0.3s ease;
            display: inline-block;
            cursor: pointer;
            letter-spacing: 0.5px;
            position: relative;
            overflow: hidden;
        }
        .btn-primary:hover {
            background-color: var(--color-primary-hover);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 24px rgba(212, 163, 74, 0.3);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-sub-text);
            border: 1px solid var(--color-border);
            padding: 12px 28px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.3s ease;
            display: inline-block;
            cursor: pointer;
            letter-spacing: 0.3px;
        }
        .btn-secondary:hover {
            border-color: var(--color-accent);
            color: var(--color-main-text);
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }

        .btn-cta {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            border: 1px solid var(--color-accent);
            padding: 12px 28px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 15px;
            transition: all 0.3s ease;
            display: inline-block;
            cursor: pointer;
            letter-spacing: 0.5px;
        }
        .btn-cta:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 4px 24px rgba(212, 163, 74, 0.45);
        }
        .btn-cta:active {
            transform: translateY(1px);
        }

        @media (max-width: 640px) {
            .btn-primary,
            .btn-secondary,
            .btn-cta {
                padding: 10px 20px;
                font-size: 14px;
                width: 100%;
                text-align: center;
            }
        }

        /* Active nav state for mobile menu */
        .nav-mobile-menu .nav-link.active {
            background-color: rgba(212, 163, 74, 0.12);
            color: var(--color-accent);
            font-weight: 700;
        }

/* roulang page: category5 */
:root {
            --color-primary: #0F3D2E;
            --color-primary-hover: #155043;
            --color-accent: #D4A34A;
            --color-accent-light: #E0B860;
            --color-copper: #B85C38;
            --color-dark-bg: #161A18;
            --color-card-bg: #1E2420;
            --color-inner-bg: #242B26;
            --color-border: #2E3A32;
            --color-border-highlight: #D4A34A;
            --color-main-text: #F2F0E8;
            --color-sub-text: #B8B5A8;
            --color-weak-text: #7A7A6E;
            --radius-card: 8px;
            --radius-inner: 6px;
            --shadow-card: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.45);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            background-color: var(--color-dark-bg);
            color: var(--color-main-text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            margin: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 48px;
        }
        @media (max-width: 1024px) {
            .container {
                padding: 0 32px;
            }
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 20px;
            }
        }

        /* Navigation */
        .site-nav {
            background-color: rgba(15, 61, 46, 0.95);
            border-bottom: 1px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 8px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-logo-icon {
            width: 28px;
            height: 28px;
            background-color: var(--color-accent);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-dark-bg);
            font-weight: 800;
            font-size: 14px;
            flex-shrink: 0;
            font-family: "SF Mono", "JetBrains Mono", monospace;
        }
        .nav-logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-main-text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .nav-logo-text span {
            color: var(--color-accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-link {
            font-size: 14px;
            color: var(--color-sub-text);
            padding: 8px 14px;
            border-radius: 6px;
            transition: all 0.25s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-main-text);
            background-color: rgba(212, 163, 74, 0.08);
        }
        .nav-link:hover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }
        .nav-link.active {
            color: var(--color-main-text);
            font-weight: 700;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }
        .nav-cta {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 10px 20px;
            border-radius: 6px;
            font-size: 14px;
            white-space: nowrap;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid var(--color-accent);
        }
        .nav-cta:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 20px rgba(212, 163, 74, 0.35);
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            border: 1px solid var(--color-border);
            background: transparent;
            transition: all 0.25s ease;
        }
        .nav-hamburger:hover {
            border-color: var(--color-border-highlight);
        }
        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-main-text);
            border-radius: 1px;
            transition: all 0.3s ease;
        }
        .nav-mobile-menu {
            display: none;
            width: 100%;
            flex-direction: column;
            gap: 4px;
            padding: 16px 0;
            background-color: rgba(15, 61, 46, 0.98);
            border-top: 1px solid var(--color-border);
            margin-top: 8px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }
        .nav-mobile-menu.open {
            display: flex;
            max-height: 600px;
            padding: 16px 0;
        }
        .nav-mobile-menu .nav-link {
            font-size: 16px;
            padding: 12px 16px;
            width: 100%;
            text-align: left;
        }
        .nav-mobile-menu .nav-cta {
            margin: 8px 16px;
            text-align: center;
            display: block;
        }
        @media (max-width: 900px) {
            .nav-links-desktop {
                display: none !important;
            }
            .nav-cta-desktop {
                display: none !important;
            }
            .nav-hamburger {
                display: flex;
            }
        }
        @media (min-width: 901px) {
            .nav-mobile-menu {
                display: none !important;
            }
        }

        /* Hero / Breadcrumb */
        .page-header {
            padding: 40px 0 24px;
            background-color: var(--color-dark-bg);
            border-bottom: 1px solid var(--color-border);
        }
        .breadcrumb {
            font-size: 13px;
            color: var(--color-weak-text);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-sub-text);
            transition: color 0.25s;
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .sep {
            color: var(--color-border);
        }
        .breadcrumb .current {
            color: var(--color-accent);
        }
        .page-header h1 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-main-text);
            margin: 0 0 12px 0;
        }
        .page-header h1 span {
            color: var(--color-accent);
        }
        .page-header p {
            color: var(--color-sub-text);
            font-size: 1rem;
            max-width: 780px;
            line-height: 1.9;
            margin: 0;
        }

        /* Resource Grid */
        .resources-section {
            padding: 48px 0 56px;
        }
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 24px;
            margin-top: 28px;
        }
        .resource-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .resource-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-highlight);
            transform: translateY(-3px);
        }
        .resource-card .corner-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 3;
        }
        .resource-card .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            overflow: hidden;
            position: relative;
        }
        .resource-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .resource-card:hover .card-img img {
            transform: scale(1.05);
        }
        .resource-card .card-body {
            padding: 20px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 10px;
        }
        .resource-card .res-type-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 20px;
            background-color: rgba(212, 163, 74, 0.12);
            color: var(--color-accent);
            border: 1px solid rgba(212, 163, 74, 0.35);
            align-self: flex-start;
        }
        .resource-card .res-type-badge.hot {
            background-color: rgba(184, 92, 56, 0.15);
            color: var(--color-copper);
            border-color: rgba(184, 92, 56, 0.4);
        }
        .resource-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-main-text);
            margin: 0;
            line-height: 1.5;
        }
        .resource-card p {
            font-size: 0.9rem;
            color: var(--color-sub-text);
            margin: 0;
            line-height: 1.7;
        }
        .resource-card .res-actions {
            margin-top: auto;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .btn-small {
            font-size: 13px;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 6px;
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid transparent;
        }
        .btn-small-outline {
            background: transparent;
            border: 1px solid var(--color-border);
            color: var(--color-sub-text);
        }
        .btn-small-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        .btn-small-solid {
            background: var(--color-primary);
            border: 1px solid var(--color-accent);
            color: var(--color-main-text);
        }
        .btn-small-solid:hover {
            background: var(--color-primary-hover);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 14px rgba(212, 163, 74, 0.25);
        }
        .resource-card.span-3 {
            grid-column: span 3;
        }
        .resource-card.span-2 {
            grid-column: span 2;
        }
        .resource-card.span-6 {
            grid-column: span 6;
        }
        @media (max-width: 900px) {
            .resource-card.span-3,
            .resource-card.span-2,
            .resource-card.span-6 {
                grid-column: span 6;
            }
            .resource-grid {
                gap: 16px;
            }
            .resource-card .card-body {
                padding: 16px 18px;
            }
        }

        /* Tool Description Bar */
        .tool-bar {
            margin-top: 40px;
            background: linear-gradient(135deg, #0F3D2E 0%, #1E2420 100%);
            border: 1px solid var(--color-accent);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: 0 4px 16px rgba(0,0,0,0.25);
        }
        .tool-bar .tool-bar-text {
            flex: 1;
            min-width: 260px;
        }
        .tool-bar .tool-bar-text h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-accent);
            margin: 0 0 6px 0;
        }
        .tool-bar .tool-bar-text p {
            color: var(--color-sub-text);
            font-size: 0.95rem;
            margin: 0;
            line-height: 1.8;
        }
        .tool-bar .tool-bar-actions {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn-primary {
            background: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 12px 24px;
            border-radius: 6px;
            transition: all 0.3s ease;
            border: 1px solid var(--color-accent);
            font-size: 14px;
        }
        .btn-primary:hover {
            background: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 24px rgba(212, 163, 74, 0.4);
        }
        .btn-secondary {
            background: transparent;
            border: 1px solid var(--color-border);
            color: var(--color-sub-text);
            padding: 12px 24px;
            border-radius: 6px;
            transition: all 0.25s ease;
            font-size: 14px;
            font-weight: 600;
        }
        .btn-secondary:hover {
            border-color: var(--color-accent);
            color: var(--color-main-text);
        }

        /* Highlights Section */
        .highlights-section {
            padding: 40px 0 48px;
        }
        .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-main-text);
            margin: 0 0 8px 0;
            line-height: 1.4;
        }
        .section-subtitle {
            color: var(--color-sub-text);
            font-size: 0.95rem;
            margin: 0 0 24px 0;
        }
        .highlight-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .highlight-item {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            text-align: center;
            transition: all 0.3s ease;
            position: relative;
        }
        .highlight-item:hover {
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .highlight-item .num {
            font-family: "SF Mono", "JetBrains Mono", monospace;
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-accent);
            display: block;
            line-height: 1.2;
        }
        .highlight-item .label {
            font-size: 0.85rem;
            color: var(--color-sub-text);
            display: block;
            margin-top: 6px;
        }
        @media (max-width: 900px) {
            .highlight-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }

        /* FAQ */
        .faq-section {
            padding: 48px 0 56px;
            border-top: 1px solid var(--color-border);
        }
        .faq-list {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-inner);
            background: var(--color-card-bg);
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item.active {
            border-color: var(--color-border-highlight);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            color: var(--color-main-text);
            font-size: 1rem;
            transition: background 0.25s ease;
            text-align: left;
            width: 100%;
        }
        .faq-question:hover {
            background: var(--color-inner-bg);
        }
        .faq-question .faq-icon {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-accent);
            flex-shrink: 0;
            transition: transform 0.3s ease;
            line-height: 1;
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 20px;
            background: var(--color-inner-bg);
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 20px 16px;
        }
        .faq-answer p {
            color: var(--color-sub-text);
            font-size: 0.9rem;
            line-height: 1.9;
            margin: 0;
            padding-top: 12px;
        }

        /* CTA Section */
        .cta-section {
            padding: 56px 0 64px;
            background-color: var(--color-dark-bg);
        }
        .cta-box {
            background: var(--color-primary);
            border: 1px solid var(--color-accent);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            box-shadow: 0 6px 24px rgba(0,0,0,0.35);
        }
        .cta-box .cta-info h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--color-main-text);
            margin: 0 0 12px 0;
            line-height: 1.4;
        }
        .cta-box .cta-info h2 span {
            color: var(--color-accent);
        }
        .cta-box .cta-info p {
            color: var(--color-sub-text);
            font-size: 0.95rem;
            margin: 0 0 20px 0;
            line-height: 1.9;
        }
        .trust-badges {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: var(--color-sub-text);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            padding: 4px 12px;
        }
        .trust-badge .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-accent);
        }
        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .cta-form input,
        .cta-form textarea {
            background: var(--color-dark-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-inner);
            padding: 12px 16px;
            font-size: 14px;
            color: var(--color-main-text);
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            width: 100%;
            resize: vertical;
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(212, 163, 74, 0.15);
        }
        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: var(--color-weak-text);
        }
        .cta-form .btn-submit {
            background: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 14px 24px;
            border-radius: 6px;
            border: 1px solid var(--color-accent);
            transition: all 0.3s ease;
            font-size: 15px;
            cursor: pointer;
        }
        .cta-form .btn-submit:hover {
            background: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 24px rgba(212, 163, 74, 0.4);
        }
        @media (max-width: 768px) {
            .cta-box {
                grid-template-columns: 1fr;
                padding: 24px 20px;
            }
            .tool-bar {
                padding: 20px;
                flex-direction: column;
                align-items: flex-start;
            }
            .tool-bar .tool-bar-actions {
                width: 100%;
                flex-direction: column;
            }
            .page-header h1 {
                font-size: 1.5rem;
            }
        }

        /* Footer */
        .site-footer {
            background-color: #0C2A20;
            border-top: 1px solid var(--color-accent);
            padding: 40px 0 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--color-main-text);
            margin-bottom: 10px;
        }
        .footer-brand span {
            color: var(--color-accent);
        }
        .footer-desc {
            font-size: 13px;
            color: var(--color-sub-text);
            line-height: 1.9;
            margin: 0;
            max-width: 320px;
        }
        .footer-col-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-main-text);
            margin: 0 0 12px 0;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links li a {
            font-size: 13px;
            color: var(--color-sub-text);
            transition: color 0.25s;
        }
        .footer-links li a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: var(--color-weak-text);
        }
        .footer-bottom a {
            color: var(--color-sub-text);
            transition: color 0.25s;
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #0F3D2E;
            --color-primary-hover: #155043;
            --color-accent: #D4A34A;
            --color-accent-light: #E0B860;
            --color-copper: #B85C38;
            --color-dark-bg: #161A18;
            --color-card-bg: #1E2420;
            --color-inner-bg: #242B26;
            --color-border: #2E3A32;
            --color-border-highlight: #D4A34A;
            --color-main-text: #F2F0E8;
            --color-sub-text: #B8B5A8;
            --color-weak-text: #7A7A6E;
            --radius-card: 8px;
            --radius-inner: 6px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.45);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            background-color: var(--color-dark-bg);
            color: var(--color-main-text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
        }

        img {
            max-width: 100%;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 48px;
        }

        @media (max-width: 1024px) {
            .container {
                padding: 0 32px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 20px;
            }
        }

        /* Navigation */
        .site-nav {
            background-color: rgba(15, 61, 46, 0.95);
            border-bottom: 1px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 8px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            width: 28px;
            height: 28px;
            background-color: var(--color-accent);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-dark-bg);
            font-weight: 800;
            font-size: 14px;
            flex-shrink: 0;
            font-family: "SF Mono", "JetBrains Mono", monospace;
        }

        .nav-logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-main-text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .nav-logo-text span {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-link {
            font-size: 14px;
            color: var(--color-sub-text);
            padding: 8px 14px;
            border-radius: 6px;
            transition: all 0.25s ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--color-main-text);
            background-color: rgba(212, 163, 74, 0.08);
        }

        .nav-link:hover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }

        .nav-link.active {
            color: var(--color-main-text);
            font-weight: 700;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }

        .nav-cta {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 10px 20px;
            border-radius: 6px;
            font-size: 14px;
            white-space: nowrap;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid var(--color-accent);
        }

        .nav-cta:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 20px rgba(212, 163, 74, 0.35);
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            border: 1px solid var(--color-border);
            background: transparent;
            transition: all 0.25s ease;
        }

        .nav-hamburger:hover {
            border-color: var(--color-border-highlight);
        }

        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-main-text);
            border-radius: 1px;
            transition: all 0.3s ease;
        }

        .nav-hamburger[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-hamburger[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .nav-hamburger[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .nav-mobile-menu {
            display: none;
            width: 100%;
            flex-direction: column;
            gap: 4px;
            padding: 12px 0 8px;
            border-top: 1px solid var(--color-border);
            margin-top: 4px;
        }

        .nav-mobile-menu.open {
            display: flex;
        }

        .nav-mobile-menu .nav-link {
            display: block;
            padding: 10px 14px;
            font-size: 15px;
        }

        .nav-mobile-menu .nav-cta {
            margin-top: 8px;
            text-align: center;
            display: block;
        }

        @media (max-width: 1024px) {
            .nav-links-desktop {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
        }

        @media (min-width: 1025px) {
            .nav-mobile-menu {
                display: none !important;
            }
        }

        /* Page Header */
        .page-header {
            background-color: var(--color-primary);
            border-bottom: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
            padding: 48px 0 40px;
        }

        .page-header::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(212, 163, 74, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-weak-text);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .breadcrumb a {
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .sep {
            color: var(--color-weak-text);
        }

        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 600;
        }

        .page-header h1 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-main-text);
            position: relative;
            z-index: 1;
            letter-spacing: 0.5px;
        }

        .page-header .page-subtitle {
            font-size: 16px;
            color: var(--color-sub-text);
            line-height: 1.8;
            margin-top: 12px;
            max-width: 700px;
            position: relative;
            z-index: 1;
        }

        .page-header .header-cta-row {
            display: flex;
            gap: 12px;
            margin-top: 20px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        @media (max-width: 768px) {
            .page-header {
                padding: 32px 0 28px;
            }
            .page-header h1 {
                font-size: 1.5rem;
            }
            .page-header .page-subtitle {
                font-size: 15px;
            }
        }

        @media (max-width: 480px) {
            .page-header h1 {
                font-size: 1.3rem;
            }
            .page-header .header-cta-row {
                flex-direction: column;
            }
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 6px;
            font-size: 15px;
            font-weight: 700;
            transition: all 0.3s ease;
            text-align: center;
            line-height: 1.5;
            border: 1px solid transparent;
        }

        .btn-primary {
            background-color: var(--color-primary);
            color: var(--color-main-text);
            border-color: var(--color-accent);
        }

        .btn-primary:hover {
            background-color: var(--color-primary-hover);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 24px rgba(212, 163, 74, 0.25);
        }

        .btn-accent {
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            border-color: var(--color-accent);
            font-weight: 700;
        }

        .btn-accent:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 24px rgba(212, 163, 74, 0.4);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-sub-text);
            border-color: var(--color-border);
        }

        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-main-text);
            background-color: rgba(212, 163, 74, 0.06);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 5px;
        }

        .btn:active {
            transform: translateY(1px);
        }

        /* Guide Layout */
        .guide-section {
            padding: 48px 0 64px;
            background-color: var(--color-dark-bg);
        }

        .guide-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* Guide Content */
        .guide-content {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 40px 44px;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .guide-content::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-copper) 100%);
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }

        .guide-intro {
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-sub-text);
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--color-border);
        }

        .guide-intro strong {
            color: var(--color-accent);
            font-weight: 700;
        }

        .guide-content section {
            margin-bottom: 40px;
        }

        .guide-content section:last-child {
            margin-bottom: 0;
        }

        .guide-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-main-text);
            line-height: 1.4;
            margin-bottom: 16px;
            padding-left: 14px;
            border-left: 3px solid var(--color-accent);
            scroll-margin-top: 100px;
        }

        .guide-content h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--color-main-text);
            line-height: 1.5;
            margin-top: 24px;
            margin-bottom: 10px;
            position: relative;
            padding-left: 16px;
        }

        .guide-content h3::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            translate: 0 -50%;
            width: 6px;
            height: 6px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }

        .guide-content p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--color-sub-text);
            margin-bottom: 12px;
        }

        .guide-content p strong {
            color: var(--color-main-text);
            font-weight: 600;
        }

        .guide-content img {
            border-radius: 6px;
            border: 1px solid var(--color-border);
            margin: 20px 0;
            width: 100%;
            object-fit: cover;
            aspect-ratio: 16/8;
        }

        .guide-content blockquote {
            background-color: var(--color-inner-bg);
            border-left: 3px solid var(--color-accent);
            padding: 18px 22px;
            border-radius: 0 6px 6px 0;
            margin: 20px 0;
            color: var(--color-main-text);
            font-size: 15px;
            line-height: 1.8;
            position: relative;
        }

        .guide-content blockquote::before {
            content: '"';
            font-size: 42px;
            color: var(--color-accent);
            position: absolute;
            top: 8px;
            left: 10px;
            opacity: 0.5;
            font-family: Georgia, serif;
            line-height: 1;
        }

        .guide-content blockquote p {
            margin-bottom: 0;
            padding-left: 28px;
            color: var(--color-main-text);
        }

        .guide-content ul {
            padding-left: 4px;
            margin: 12px 0 16px;
        }

        .guide-content ul li {
            position: relative;
            padding-left: 24px;
            font-size: 15px;
            line-height: 1.9;
            color: var(--color-sub-text);
            margin-bottom: 8px;
        }

        .guide-content ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 12px;
            width: 8px;
            height: 8px;
            background-color: var(--color-accent);
            border-radius: 2px;
            opacity: 0.7;
        }

        /* Sidebar */
        .guide-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .guide-sidebar {
                position: static;
                top: auto;
            }
        }

        .sidebar-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        .sidebar-card-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 16px;
            padding-left: 12px;
            border-left: 3px solid var(--color-accent);
            line-height: 1.4;
        }

        .sidebar-anchor-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-anchor-list a {
            display: block;
            font-size: 14px;
            color: var(--color-sub-text);
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.25s ease;
            line-height: 1.5;
        }

        .sidebar-anchor-list a:hover {
            color: var(--color-accent);
            background-color: rgba(212, 163, 74, 0.06);
            padding-left: 16px;
        }

        .sidebar-recommend-card {
            display: flex;
            flex-direction: column;
            gap: 0;
            background-color: var(--color-inner-bg);
            border: 1px solid var(--color-border);
            border-radius: 6px;
            overflow: hidden;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .sidebar-recommend-card:hover {
            border-color: var(--color-border-highlight);
            box-shadow: var(--shadow-card-hover);
            translate: 0 -2px;
        }

        .sidebar-recommend-card .rec-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: var(--color-card-bg);
            border-bottom: 1px solid var(--color-border);
        }

        .sidebar-recommend-card .rec-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .sidebar-recommend-card:hover .rec-image img {
            transform: scale(1.05);
        }

        .sidebar-recommend-card .rec-body {
            padding: 14px 16px;
        }

        .sidebar-recommend-card .rec-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-main-text);
            margin-bottom: 4px;
            line-height: 1.5;
        }

        .sidebar-recommend-card .rec-desc {
            font-size: 12px;
            color: var(--color-weak-text);
            line-height: 1.6;
        }

        .sidebar-recommend-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--color-primary);
            padding: 64px 0 72px;
            border-top: 1px solid var(--color-accent);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -80px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(212, 163, 74, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        @media (max-width: 860px) {
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        .cta-info h2 {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--color-main-text);
            line-height: 1.35;
            margin-bottom: 14px;
        }

        .cta-info h2 span {
            color: var(--color-accent);
        }

        .cta-info p {
            font-size: 15px;
            color: var(--color-sub-text);
            line-height: 1.9;
            margin-bottom: 20px;
        }

        .cta-trust-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: var(--color-weak-text);
            background-color: var(--color-inner-bg);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            padding: 6px 14px;
            line-height: 1.4;
        }

        .trust-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            background-color: var(--color-accent);
            border-radius: 50%;
            flex-shrink: 0;
        }

        .cta-form-wrap {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-accent);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            box-shadow: var(--shadow-card);
        }

        .cta-form-wrap h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 20px;
            line-height: 1.4;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            color: var(--color-sub-text);
            margin-bottom: 6px;
            font-weight: 500;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            background-color: var(--color-inner-bg);
            border: 1px solid var(--color-border);
            border-radius: 6px;
            padding: 10px 14px;
            font-size: 14px;
            color: var(--color-main-text);
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            line-height: 1.6;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(212, 163, 74, 0.15);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }

        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23B8B5A8' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
            cursor: pointer;
        }

        .form-submit-btn {
            width: 100%;
            background-color: var(--color-accent);
            color: var(--color-dark-bg);
            font-weight: 700;
            padding: 12px 20px;
            border-radius: 6px;
            font-size: 15px;
            transition: all 0.3s ease;
            border: 1px solid var(--color-accent);
            cursor: pointer;
            letter-spacing: 0.5px;
        }

        .form-submit-btn:hover {
            background-color: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 0 20px rgba(212, 163, 74, 0.35);
        }

        .form-submit-btn:active {
            transform: translateY(1px);
        }

        @media (max-width: 640px) {
            .cta-section {
                padding: 48px 0 56px;
            }
            .cta-info h2 {
                font-size: 1.3rem;
            }
            .cta-form-wrap {
                padding: 24px 20px;
            }
        }

        /* Footer */
        .site-footer {
            background-color: #0C2A20;
            border-top: 1px solid var(--color-accent);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 32px;
        }

        @media (max-width: 860px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--color-main-text);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .footer-brand span {
            color: var(--color-accent);
        }

        .footer-desc {
            font-size: 13px;
            color: var(--color-weak-text);
            line-height: 1.8;
            margin-top: 8px;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-main-text);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--color-sub-text);
            transition: color 0.25s ease;
            line-height: 1.6;
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border);
            font-size: 12px;
            color: var(--color-weak-text);
            line-height: 1.6;
        }

        .footer-bottom a {
            color: var(--color-sub-text);
            transition: color 0.25s ease;
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        @media (max-width: 640px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .site-footer {
                padding: 32px 0 20px;
            }
        }