/* roulang page: index */
:root {
            --color-primary: #1E3D37;
            --color-primary-light: #2A5048;
            --color-primary-dark: #162E2A;
            --color-accent: #C8873B;
            --color-accent-hover: #A86F2F;
            --color-danger: #C23A2E;
            --color-danger-bg: #FBE8E6;
            --color-bg: #F5F3EF;
            --color-surface: #FFFFFF;
            --color-border: #E4E0D9;
            --color-text: #1E3D37;
            --color-text-secondary: #5A6562;
            --color-text-muted: #B5C0BD;
            --color-text-inverse: #FFFFFF;
            --color-accent-bg: rgba(200, 135, 59, 0.15);
            --color-badge-bg: #EDE9E3;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(30, 61, 55, 0.06);
            --shadow-md: 0 8px 20px rgba(30, 61, 55, 0.12);
            --shadow-lg: 0 16px 40px rgba(30, 61, 55, 0.14);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 48px;
            --spacing-xl: 72px;
            --font-family-sans: 'Noto Sans SC', 'Source Han Sans CN', '思源黑体', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-family-mono: 'IBM Plex Mono', 'Roboto Mono', 'Courier New', monospace;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family-sans);
            font-size: 15px;
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            outline: none;
        }

        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid rgba(30, 61, 55, 0.3);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            height: 72px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(30, 61, 55, 0.08);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo__icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
        }
        .logo__text {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-fast), border-color var(--transition-fast);
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            line-height: 1.2;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-primary {
            background-color: var(--color-accent);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background-color: var(--color-accent-hover);
            color: #FFFFFF;
            box-shadow: 0 4px 14px rgba(200, 135, 59, 0.35);
        }
        .btn-secondary {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }
        .btn-secondary:hover {
            background-color: var(--color-primary);
            color: #FFFFFF;
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #FFFFFF;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #FFFFFF;
            color: #FFFFFF;
        }
        .btn-danger {
            background: transparent;
            border: 1px solid var(--color-danger);
            color: var(--color-danger);
        }
        .btn-danger:hover {
            background-color: var(--color-danger-bg);
            border-color: var(--color-danger);
            color: var(--color-danger);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 16px;
        }

        /* Mobile menu toggle */
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            padding: 8px;
            border-radius: var(--radius-sm);
            background: var(--color-bg);
            z-index: 1002;
        }
        .nav-toggle span {
            display: block;
            height: 2px;
            width: 100%;
            background-color: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-normal);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-surface);
            z-index: 1001;
            padding: var(--spacing-lg) var(--spacing-md);
            flex-direction: column;
            gap: var(--spacing-md);
            overflow-y: auto;
        }
        .mobile-nav-overlay.open {
            display: flex;
        }
        .mobile-nav-overlay a {
            font-size: 18px;
            font-weight: 500;
            color: var(--color-text);
            padding: var(--spacing-sm) 0;
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: color var(--transition-fast);
        }
        .mobile-nav-overlay a:hover,
        .mobile-nav-overlay a.active {
            color: var(--color-primary);
        }
        .mobile-nav-overlay .btn {
            margin-top: var(--spacing-sm);
            width: 100%;
        }

        /* Main */
        main {
            flex: 1;
            padding-top: 72px;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background-color: var(--color-primary);
            background-image: url('/assets/images/c5d69152f0ef74ce.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 61, 55, 0.88) 0%, rgba(30, 61, 55, 0.72) 60%, rgba(30, 61, 55, 0.55) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }
        .hero__content {
            max-width: 560px;
        }
        .hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(200, 135, 59, 0.2);
            border: 1px solid rgba(200, 135, 59, 0.45);
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.5px;
        }
        .hero__title {
            font-size: 36px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.5px;
        }
        .hero__subtitle {
            font-size: 16px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
            max-width: 480px;
        }
        .hero__actions {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            margin-bottom: var(--spacing-lg);
        }
        .hero__trust {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }
        .hero__trust-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--color-text-muted);
            white-space: nowrap;
        }
        .hero__trust-item .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--color-accent);
            flex-shrink: 0;
        }
        .hero__visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero__visual-box {
            width: 480px;
            max-width: 100%;
            height: 320px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(4px);
        }
        .hero__visual-box__inner {
            text-align: center;
            padding: var(--spacing-lg);
        }
        .hero__visual-box__icon {
            font-size: 48px;
            margin-bottom: var(--spacing-sm);
            color: var(--color-accent);
        }
        .hero__visual-box__text {
            color: var(--color-text-muted);
            font-size: 14px;
            letter-spacing: 1px;
        }

        /* Section Base */
        .section {
            padding: var(--spacing-xl) 0;
        }
        .section--alt {
            background-color: var(--color-surface);
        }
        .section--dark {
            background-color: var(--color-primary);
        }
        .section--light-grey {
            background-color: #EDEAE5;
        }
        .section--danger-light {
            background-color: var(--color-danger-bg);
        }
        .section__header {
            margin-bottom: var(--spacing-lg);
            text-align: center;
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }
        .section__header--left {
            text-align: left;
            margin-left: 0;
            margin-right: auto;
        }
        .section__title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }
        .section__title--white {
            color: #FFFFFF;
        }
        .section__subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .section__subtitle--white {
            color: var(--color-text-muted);
        }
        .section__divider {
            width: 60px;
            height: 4px;
            background: var(--color-accent);
            border-radius: var(--radius-full);
            margin: 0 auto var(--spacing-sm);
        }
        .section__header--left .section__divider {
            margin-left: 0;
        }

        /* Quick Steps Bar */
        .quick-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            align-items: start;
            position: relative;
        }
        .quick-step {
            text-align: center;
            padding: var(--spacing-md);
            position: relative;
        }
        .quick-step:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 36px;
            right: -50%;
            width: 100%;
            border-top: 2px dashed var(--color-border);
            z-index: 0;
        }
        .quick-step__num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #FFFFFF;
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-sm);
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 12px rgba(200, 135, 59, 0.3);
        }
        .quick-step__label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            position: relative;
            z-index: 1;
        }

        /* Cards Grid */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .cards-grid--4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .cards-grid--2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition-normal), transform var(--transition-normal), border-color var(--transition-normal);
            position: relative;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }
        .card__top-accent {
            height: 4px;
            background: var(--color-accent);
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card__body {
            padding: var(--spacing-md);
        }
        .card__title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
        }
        .card__text {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: var(--spacing-sm);
        }
        .card__meta {
            font-size: 13px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }
        .card__img {
            aspect-ratio: 3 / 2;
            object-fit: cover;
            width: 100%;
        }
        .card__img--16-9 {
            aspect-ratio: 16 / 9;
        }
        .card__link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: var(--spacing-xs);
            transition: color var(--transition-fast);
        }
        .card__link:hover {
            color: var(--color-accent-hover);
            text-decoration: underline;
        }

        /* Product Cards */
        .product-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition-normal), transform var(--transition-normal);
            display: flex;
            flex-direction: column;
        }
        .product-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .product-card__img {
            aspect-ratio: 3 / 2;
            width: 100%;
            object-fit: cover;
        }
        .product-card__body {
            padding: var(--spacing-md);
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .product-card__badge {
            display: inline-block;
            background: var(--color-accent-bg);
            color: var(--color-accent-hover);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            margin-bottom: var(--spacing-xs);
            align-self: flex-start;
        }
        .product-card__title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
        }
        .product-card__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: var(--spacing-sm);
            flex: 1;
        }
        .product-card__tags {
            display: flex;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
            margin-bottom: var(--spacing-sm);
        }
        .product-card__tag {
            font-size: 12px;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            background: var(--color-badge-bg);
            color: var(--color-text);
        }
        .product-card__tag--warning {
            background: var(--color-danger-bg);
            color: var(--color-danger);
        }
        .product-card__footer {
            margin-top: auto;
            padding-top: var(--spacing-sm);
            border-top: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        /* Advantage Grid */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .advantage-item {
            padding: var(--spacing-md);
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: background var(--transition-fast), border-color var(--transition-fast);
        }
        .advantage-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
        }
        .advantage-item__icon {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: rgba(200, 135, 59, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-sm);
            color: var(--color-accent);
            font-size: 20px;
        }
        .advantage-item__title {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: var(--spacing-xs);
        }
        .advantage-item__desc {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* Stats / Parameters */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .stat-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-normal), transform var(--transition-normal);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-card__value {
            font-family: var(--font-family-mono);
            font-size: 24px;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: var(--spacing-xs);
        }
        .stat-card__unit {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .stat-card__label {
            font-size: 13px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        /* News Cards */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .news-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-normal), transform var(--transition-normal);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .news-card__body {
            padding: var(--spacing-md);
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card__badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            background: var(--color-badge-bg);
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
            align-self: flex-start;
        }
        .news-card__title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: var(--spacing-xs);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }
        .news-card__summary {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: var(--spacing-sm);
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-card__footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            padding-top: var(--spacing-sm);
            border-top: 1px solid var(--color-border);
        }
        .news-card__date {
            color: var(--color-text-muted);
        }
        .news-card__more {
            color: var(--color-accent);
            font-weight: 500;
        }
        .news-card__more:hover {
            color: var(--color-accent-hover);
        }
        .news-empty {
            text-align: center;
            padding: var(--spacing-lg);
            color: var(--color-text-muted);
            font-size: 15px;
            background: var(--color-surface);
            border: 1px dashed var(--color-border);
            border-radius: var(--radius-md);
            grid-column: 1 / -1;
        }

        /* Scene Cards */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .scene-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-normal), transform var(--transition-normal);
        }
        .scene-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--color-primary);
        }
        .scene-card__icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--color-badge-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-sm);
            font-size: 20px;
            color: var(--color-primary);
        }
        .scene-card__title {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
        }
        .scene-card__text {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* Security Section */
        .security-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }
        .security-item {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            padding: var(--spacing-md);
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .security-item__check {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #FFF;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 14px;
            font-weight: 700;
            margin-top: 2px;
        }
        .security-item__title {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 4px;
        }
        .security-item__desc {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* Process Steps */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-sm);
        }
        .process-step {
            text-align: center;
            padding: var(--spacing-md) var(--spacing-xs);
        }
        .process-step__num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #FFF;
            font-size: 16px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-xs);
        }
        .process-step__title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .process-step__desc {
            font-size: 12px;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        /* Fee Table */
        .fee-table-wrapper {
            overflow-x: auto;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .fee-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 600px;
        }
        .fee-table thead th {
            background: var(--color-primary);
            color: #FFFFFF;
            padding: 14px 20px;
            text-align: left;
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
        }
        .fee-table tbody td {
            padding: 14px 20px;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text-secondary);
        }
        .fee-table tbody tr:hover {
            background: #FAFAF8;
        }
        .fee-table tbody tr:last-child td {
            border-bottom: none;
        }

        /* Risk Warning */
        .risk-box {
            background: var(--color-danger-bg);
            border: 1px solid var(--color-danger);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            max-width: 800px;
            margin: 0 auto;
        }
        .risk-box__title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-danger);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .risk-box__text {
            font-size: 13px;
            color: var(--color-danger);
            line-height: 1.7;
        }
        .risk-box .btn {
            align-self: flex-start;
            margin-top: var(--spacing-xs);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-item__question {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            cursor: pointer;
            transition: color var(--transition-fast);
            outline: none;
        }
        .faq-item__question:hover {
            color: var(--color-primary);
        }
        .faq-item__question:focus {
            outline: 2px solid rgba(30, 61, 55, 0.3);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        .faq-item__icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-badge-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            flex-shrink: 0;
            transition: transform var(--transition-normal);
        }
        .faq-item.open .faq-item__icon {
            transform: rotate(45deg);
            background: var(--color-accent);
            color: #FFF;
        }
        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            padding: 0;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-item__answer {
            max-height: 400px;
            padding: 0 0 16px;
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--color-primary);
            padding: var(--spacing-xl) 0;
            text-align: center;
            background-image: url('/assets/images/e8b87a9179363b70.webp');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(30, 61, 55, 0.85);
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section__title {
            font-size: 28px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
        }
        .cta-section__subtitle {
            font-size: 15px;
            color: var(--color-text-muted);
            margin-bottom: var(--spacing-lg);
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section__actions {
            display: flex;
            gap: var(--spacing-md);
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Compliance Note */
        .compliance-note {
            font-size: 13px;
            color: var(--color-text-secondary);
            text-align: center;
            padding: var(--spacing-md) 0;
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* Inline CTA / link lists */
        .link-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }
        .link-list a {
            font-size: 14px;
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
            display: inline-block;
        }
        .link-list a:hover {
            color: var(--color-accent-hover);
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            color: var(--color-text-muted);
            padding-top: var(--spacing-xl);
            margin-top: 0;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
        }
        .site-footer__brand .logo__text {
            color: #FFFFFF;
            font-size: 18px;
        }
        .site-footer__desc {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-top: var(--spacing-sm);
        }
        .site-footer__column-title {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
        }
        .site-footer__links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }
        .site-footer__links a,
        .site-footer__links span {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .site-footer__links a:hover {
            color: #FFFFFF;
        }
        .site-footer__contact {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.8;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .site-footer__bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding: var(--spacing-md) 0;
            background: var(--color-primary-dark);
        }
        .site-footer__bottom .container {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
            padding-top: var(--spacing-sm);
            padding-bottom: var(--spacing-sm);
        }
        .site-footer__risk {
            font-size: 13px;
            color: #E74C3C;
            font-weight: 500;
            line-height: 1.6;
            text-align: center;
        }
        .site-footer__copyright {
            font-size: 12px;
            color: var(--color-text-muted);
            text-align: center;
        }

        /* Category Entries */
        .category-entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .category-entry-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-normal), transform var(--transition-normal), border-color var(--transition-normal);
            text-align: center;
        }
        .category-entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary);
        }
        .category-entry-card__icon {
            font-size: 32px;
            margin-bottom: var(--spacing-xs);
        }
        .category-entry-card__title {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
        }
        .category-entry-card__desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* "View More" link */
        .view-more {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-accent);
            transition: color var(--transition-fast);
        }
        .view-more:hover {
            color: var(--color-accent-hover);
            text-decoration: underline;
        }
        .view-more--light {
            color: #FFFFFF;
        }
        .view-more--light:hover {
            color: var(--color-accent);
        }

        /* Utility */
        .text-center {
            text-align: center;
        }
        .text-left {
            text-align: left;
        }
        .mt-xs {
            margin-top: var(--spacing-xs);
        }
        .mt-sm {
            margin-top: var(--spacing-sm);
        }
        .mt-md {
            margin-top: var(--spacing-md);
        }
        .mt-lg {
            margin-top: var(--spacing-lg);
        }
        .mb-sm {
            margin-bottom: var(--spacing-sm);
        }
        .mb-md {
            margin-bottom: var(--spacing-md);
        }
        .mb-lg {
            margin-bottom: var(--spacing-lg);
        }
        .gap-sm {
            gap: var(--spacing-sm);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
                text-align: center;
            }
            .hero__content {
                max-width: 100%;
                margin: 0 auto;
            }
            .hero__subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .hero__actions {
                justify-content: center;
            }
            .hero__trust {
                justify-content: center;
            }
            .hero__visual-box {
                width: 100%;
                max-width: 480px;
                height: 280px;
                margin: 0 auto;
            }
            .quick-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }
            .quick-step:not(:last-child)::after {
                display: none;
            }
            .advantage-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: var(--spacing-md);
            }
            .site-footer .container {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-nav-overlay.open {
                display: flex;
            }
            .section {
                padding: var(--spacing-lg) 0;
            }
            .section__title {
                font-size: 24px;
            }
            .cards-grid,
            .cards-grid--4,
            .cards-grid--2,
            .news-grid,
            .category-entry-grid {
                grid-template-columns: 1fr;
            }
            .quick-steps {
                grid-template-columns: 1fr;
            }
            .advantage-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .security-list {
                grid-template-columns: 1fr;
            }
            .hero {
                min-height: auto;
                padding: var(--spacing-xl) 0;
            }
            .hero__title {
                font-size: 26px;
            }
            .hero__visual-box {
                height: 220px;
            }
            .site-footer .container {
                grid-template-columns: 1fr;
            }
            .risk-box .btn {
                width: 100%;
            }
            .cta-section__title {
                font-size: 22px;
            }
            .fee-table {
                font-size: 12px;
                min-width: 480px;
            }
            .fee-table thead th,
            .fee-table tbody td {
                padding: 10px 14px;
            }
            .container {
                padding-left: var(--spacing-sm);
                padding-right: var(--spacing-sm);
            }
        }

        @media (max-width: 520px) {
            .hero__title {
                font-size: 22px;
            }
            .hero__subtitle {
                font-size: 14px;
            }
            .hero__actions {
                flex-direction: column;
            }
            .hero__actions .btn {
                width: 100%;
            }
            .section__title {
                font-size: 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-card__value {
                font-size: 20px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 13px;
            }
            .card__title,
            .product-card__title {
                font-size: 16px;
            }
            .faq-item__question {
                font-size: 14px;
            }
            .site-footer__bottom .container {
                padding: var(--spacing-sm);
            }
        }

/* roulang page: article */
:root {
            --color-primary: #1E3D37;
            --color-primary-light: #2A5048;
            --color-primary-dark: #162E2A;
            --color-accent: #C8873B;
            --color-accent-hover: #A86F2F;
            --color-danger: #C23A2E;
            --color-danger-bg: #FBE8E6;
            --color-bg: #F5F3EF;
            --color-surface: #FFFFFF;
            --color-border: #E4E0D9;
            --color-text: #1E3D37;
            --color-text-secondary: #5A6562;
            --color-text-muted: #B5C0BD;
            --color-text-inverse: #FFFFFF;
            --color-accent-bg: rgba(200, 135, 59, 0.15);
            --color-badge-bg: #EDE9E3;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(30, 61, 55, 0.06);
            --shadow-md: 0 8px 20px rgba(30, 61, 55, 0.12);
            --shadow-lg: 0 16px 40px rgba(30, 61, 55, 0.14);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 48px;
            --spacing-xl: 72px;
            --font-family-sans: 'Noto Sans SC', 'Source Han Sans CN', '思源黑体', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-family-mono: 'IBM Plex Mono', 'Roboto Mono', 'Courier New', monospace;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1200px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family-sans);
            font-size: 15px;
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            padding-top: 72px;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            outline: none;
        }

        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid rgba(30, 61, 55, 0.3);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            height: 72px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(30, 61, 55, 0.08);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
        }

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

        .logo__icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
        }

        .logo__text {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-fast), border-color var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all var(--transition-normal);
            border: 1px solid transparent;
        }

        .btn-primary {
            background: var(--color-accent);
            color: #FFFFFF;
            border-color: var(--color-accent);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            color: #FFFFFF;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }

        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #FFFFFF;
        }

        .btn-danger {
            background: transparent;
            border: 1px solid var(--color-danger);
            color: var(--color-danger);
        }

        .btn-danger:hover,
        .btn-danger:focus {
            background: var(--color-danger-bg);
            border-color: var(--color-danger);
            color: var(--color-danger);
        }

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

        /* Footer */
        .site-footer {
            margin-top: var(--spacing-xl);
            background-color: var(--color-primary);
            color: var(--color-text-muted);
        }

        .site-footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: var(--spacing-lg);
            padding-top: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
        }

        .site-footer__brand .logo {
            margin-bottom: var(--spacing-sm);
        }

        .site-footer__brand .logo__text {
            color: #FFFFFF;
        }

        .site-footer__desc {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-text-muted);
            margin-bottom: 0;
        }

        .site-footer__column-title {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
        }

        .site-footer__links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer__links li {
            margin-bottom: 10px;
        }

        .site-footer__links a {
            font-size: 13px;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

        .site-footer__links a:hover {
            color: #FFFFFF;
        }

        .site-footer__contact {
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
            line-height: 1.7;
        }

        .site-footer__bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: var(--spacing-sm) 0;
        }

        .site-footer__bottom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }

        .site-footer__risk {
            font-size: 13px;
            color: var(--color-danger);
            font-weight: 500;
        }

        .site-footer__copyright {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        /* Article Page Specific */
        .article-page-main {
            flex: 1;
            padding: var(--spacing-lg) 0 var(--spacing-xl);
        }

        .breadcrumbs {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-md);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
        }

        .breadcrumbs a {
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }

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

        .breadcrumbs .separator {
            color: var(--color-text-muted);
        }

        .breadcrumbs .current {
            color: var(--color-text);
            font-weight: 500;
        }

        .article-head {
            margin-bottom: var(--spacing-md);
        }

        .article-title {
            font-size: 32px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: var(--spacing-sm);
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        .article-meta .badge-category {
            background: var(--color-badge-bg);
            color: var(--color-primary);
            border-radius: var(--radius-full);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
        }

        .article-meta .meta-separator {
            color: var(--color-border);
        }

        .article-feature-image {
            margin-bottom: var(--spacing-md);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .article-feature-image img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: var(--radius-md);
        }

        .article-image-caption {
            font-size: 12px;
            color: var(--color-text-secondary);
            margin-top: var(--spacing-xs);
            padding: 0 4px;
        }

        .article-content-wrapper {
            max-width: 760px;
            margin: 0 auto;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            margin-bottom: var(--spacing-lg);
        }

        .article-content h2 {
            font-size: 22px;
            line-height: 1.4;
            font-weight: 700;
            color: var(--color-primary);
            margin: 2em 0 0.8em;
        }

        .article-content h3 {
            font-size: 18px;
            line-height: 1.5;
            font-weight: 700;
            color: var(--color-primary);
            margin: 1.8em 0 0.6em;
        }

        .article-content p {
            margin-bottom: 1.5em;
        }

        .article-content blockquote {
            border-left: 3px solid var(--color-accent);
            background: var(--color-bg);
            padding: var(--spacing-sm) var(--spacing-md);
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-secondary);
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.5em 1.5em;
            padding: 0;
        }

        .article-content li {
            margin-bottom: 0.5em;
        }

        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            margin: 1.5em 0;
        }

        .article-content a {
            color: var(--color-accent-hover);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: var(--color-primary);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: var(--spacing-lg);
        }

        .article-tags a {
            display: inline-flex;
            align-items: center;
            background: var(--color-badge-bg);
            color: var(--color-primary);
            border-radius: var(--radius-full);
            padding: 6px 16px;
            font-size: 13px;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .article-tags a:hover {
            background: var(--color-accent-bg);
            border-color: var(--color-accent);
            color: var(--color-accent-hover);
        }

        .related-reading {
            margin-bottom: var(--spacing-lg);
        }

        .related-reading__title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: var(--spacing-md);
        }

        .related-reading__grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
        }

        .related-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
        }

        .related-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }

        .related-card__title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .related-card__excerpt {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card__date {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .risk-inline {
            border-left: 4px solid var(--color-danger);
            background: var(--color-danger-bg);
            border-radius: var(--radius-sm);
            padding: var(--spacing-sm) var(--spacing-md);
            margin-bottom: var(--spacing-lg);
            font-size: 13px;
            color: var(--color-danger);
            line-height: 1.6;
        }

        .article-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--color-border);
        }

        .not-found {
            padding: var(--spacing-xl) 0;
            text-align: center;
            color: var(--color-text-secondary);
        }

        .not-found a {
            color: var(--color-accent-hover);
            text-decoration: underline;
        }

        @media (max-width: 991.98px) {
            .main-nav {
                display: none;
            }
            .site-footer .container {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
        }

        @media (max-width: 767.98px) {
            .article-title {
                font-size: 24px;
            }
            .article-content-wrapper {
                max-width: 100%;
            }
            .related-reading__grid {
                grid-template-columns: 1fr;
            }
            .site-footer .container {
                grid-template-columns: 1fr;
            }
            .site-footer__bottom .container {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: var(--spacing-sm);
                padding-right: var(--spacing-sm);
            }
            .article-title {
                font-size: 22px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .article-actions {
                flex-direction: column;
                align-items: stretch;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1E3D37;
            --color-primary-light: #2A5048;
            --color-primary-dark: #162E2A;
            --color-accent: #C8873B;
            --color-accent-hover: #A86F2F;
            --color-danger: #C23A2E;
            --color-danger-bg: #FBE8E6;
            --color-bg: #F5F3EF;
            --color-surface: #FFFFFF;
            --color-border: #E4E0D9;
            --color-text: #1E3D37;
            --color-text-secondary: #5A6562;
            --color-text-muted: #B5C0BD;
            --color-text-inverse: #FFFFFF;
            --color-accent-bg: rgba(200, 135, 59, 0.15);
            --color-badge-bg: #EDE9E3;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(30, 61, 55, 0.06);
            --shadow-md: 0 8px 20px rgba(30, 61, 55, 0.12);
            --shadow-lg: 0 16px 40px rgba(30, 61, 55, 0.14);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 48px;
            --spacing-xl: 72px;
            --font-family-sans: 'Noto Sans SC', 'Source Han Sans CN', '思源黑体', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-family-mono: 'IBM Plex Mono', 'Roboto Mono', 'Courier New', monospace;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1200px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family-sans);
            font-size: 15px;
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            margin: 0;
            padding-top: 72px;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            outline: none;
        }
        button:focus, a:focus, input:focus, select:focus, textarea:focus {
            outline: 2px solid rgba(30, 61, 55, 0.3);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            height: 72px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(30, 61, 55, 0.08);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo__icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }
        .logo__text {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-fast), border-color var(--transition-fast);
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .nav-toggle:hover {
            background: var(--color-bg);
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: transform var(--transition-normal), opacity var(--transition-normal);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-surface);
            z-index: 999;
            padding: var(--spacing-md);
            flex-direction: column;
        }
        .mobile-nav-overlay.open {
            display: flex;
        }
        .mobile-nav-overlay a {
            font-size: 18px;
            font-weight: 500;
            color: var(--color-text);
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .mobile-nav-overlay a.active {
            color: var(--color-accent-hover);
        }
        .mobile-nav-overlay .btn {
            margin-top: var(--spacing-md);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            border: 1px solid transparent;
            line-height: 1.4;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn:focus {
            outline: 2px solid rgba(30, 61, 55, 0.3);
            outline-offset: 2px;
            box-shadow: 0 0 0 2px rgba(30, 61, 55, 0.3);
        }
        .btn-primary {
            background: var(--color-accent);
            color: var(--color-text-inverse);
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            color: var(--color-text-inverse);
        }
        .btn-secondary {
            background: transparent;
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .btn-secondary:hover {
            background: var(--color-primary);
            color: var(--color-text-inverse);
        }
        .btn-danger-outline {
            background: transparent;
            border-color: var(--color-danger);
            color: var(--color-danger);
        }
        .btn-danger-outline:hover {
            background: var(--color-danger-bg);
            color: var(--color-danger);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 15px;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        /* Sections */
        .section {
            padding: var(--spacing-xl) 0;
        }
        .section-sm {
            padding: var(--spacing-lg) 0;
        }
        .section-alt {
            background: var(--color-surface);
        }
        .section-dark {
            background: var(--color-primary);
            color: var(--color-text-inverse);
        }
        .section-dark .section-title {
            color: var(--color-text-inverse);
        }
        .section-dark .section-subtitle {
            color: var(--color-text-muted);
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-lg);
            max-width: 680px;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-dark .section-subtitle {
            color: var(--color-text-muted);
        }
        .text-center {
            text-align: center;
        }
        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Category H1 Block */
        .category-hero {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            padding: 40px 0 32px;
        }
        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .category-hero .category-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }
        .category-hero .breadcrumb-mini {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 12px;
        }
        .category-hero .breadcrumb-mini a {
            color: var(--color-text-secondary);
        }
        .category-hero .breadcrumb-mini a:hover {
            color: var(--color-accent-hover);
        }

        /* Category Entry Strip */
        .category-entry-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .entry-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-normal), transform var(--transition-normal), border-color var(--transition-normal);
            text-align: center;
        }
        .entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary);
        }
        .entry-card__icon {
            font-size: 32px;
            margin-bottom: 12px;
            display: inline-block;
        }

        /* Product Cards */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .product-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-normal), transform var(--transition-normal), border-color var(--transition-normal);
            display: flex;
            flex-direction: column;
        }
        .product-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary);
        }
        .product-card__image {
            aspect-ratio: 3/2;
            overflow: hidden;
            background: var(--color-bg);
        }
        .product-card__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .product-card__body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .product-card__title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .product-card__tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 12px;
        }
        .product-card__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
            flex: 1;
        }
        .product-card__footer {
            margin-top: auto;
        }

        /* Badges */
        .badge-tag {
            display: inline-flex;
            align-items: center;
            background: var(--color-badge-bg);
            color: var(--color-primary);
            border-radius: var(--radius-full);
            font-size: 12px;
            padding: 4px 12px;
            font-weight: 500;
        }
        .badge-data {
            display: inline-flex;
            align-items: center;
            background: var(--color-accent-bg);
            color: var(--color-accent-hover);
            border-radius: var(--radius-full);
            font-size: 12px;
            padding: 4px 12px;
            font-weight: 600;
        }
        .badge-danger {
            display: inline-flex;
            align-items: center;
            background: var(--color-danger-bg);
            color: var(--color-danger);
            border-radius: var(--radius-full);
            font-size: 12px;
            padding: 4px 12px;
            font-weight: 600;
        }

        /* Table */
        .table-wrapper {
            overflow-x: auto;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 640px;
        }
        .data-table thead {
            background: var(--color-primary);
            color: #fff;
        }
        .data-table th {
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
            white-space: nowrap;
        }
        .data-table td {
            padding: 14px 18px;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text-secondary);
        }
        .data-table tbody tr:last-child td {
            border-bottom: none;
        }
        .data-table tbody tr:hover {
            background: #FAFAF8;
        }

        /* Fee list */
        .fee-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }
        .fee-item {
            display: flex;
            gap: 14px;
            padding: 18px 20px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            align-items: flex-start;
        }
        .fee-item__icon {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            background: var(--color-accent-bg);
            color: var(--color-accent-hover);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }
        .fee-item__title {
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
            font-size: 14px;
        }
        .fee-item__desc {
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        /* Risk block */
        .risk-block {
            background: var(--color-danger-bg);
            border: 1px solid var(--color-danger);
            border-radius: var(--radius-md);
            padding: 24px;
        }
        .risk-block__title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-danger);
            margin-bottom: 10px;
        }
        .risk-block__text {
            font-size: 13px;
            color: var(--color-danger);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        /* Step flow */
        .step-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            position: relative;
        }
        .step-item {
            text-align: center;
        }
        .step-item__num {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-full);
            background: var(--color-accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 12px;
            font-family: var(--font-family-mono);
        }
        .step-item__title {
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
            font-size: 14px;
        }
        .step-item__desc {
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        /* CTA section */
        .cta-panel {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
        }
        .cta-panel__title {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-panel__subtitle {
            font-size: 15px;
            color: var(--color-text-muted);
            margin-bottom: 28px;
        }
        .cta-panel .btn {
            margin: 0 8px;
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: #fff;
            padding-top: 56px;
            margin-top: auto;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
        }
        .site-footer__brand .logo__text {
            color: #fff;
        }
        .site-footer__desc {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 16px;
            line-height: 1.8;
        }
        .site-footer__column-title {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer__links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer__links li {
            margin-bottom: 10px;
        }
        .site-footer__links a {
            color: var(--color-text-muted);
            font-size: 13px;
            transition: color var(--transition-fast);
        }
        .site-footer__links a:hover {
            color: #fff;
        }
        .site-footer__contact {
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .site-footer__bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top: 40px;
            padding: 20px 0;
        }
        .site-footer__bottom .container {
            display: flex;
            flex-direction: column;
            gap: 8px;
            grid-template-columns: none;
        }
        .site-footer__risk {
            color: #F0A8A0;
            font-size: 13px;
        }
        .site-footer__copyright {
            color: var(--color-text-muted);
            font-size: 12px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-entry-cards {
                grid-template-columns: repeat(3, 1fr);
            }
            .site-footer .container {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .section {
                padding: var(--spacing-lg) 0;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .product-grid {
                grid-template-columns: 1fr;
            }
            .category-entry-cards {
                grid-template-columns: 1fr;
            }
            .fee-list {
                grid-template-columns: 1fr;
            }
            .step-flow {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }
            .cta-panel {
                padding: 32px 20px;
            }
            .cta-panel__title {
                font-size: 22px;
            }
            .site-footer .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer__bottom .container {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: var(--spacing-sm);
                padding-right: var(--spacing-sm);
            }
            .section-title {
                font-size: 22px;
            }
            .category-hero h1 {
                font-size: 21px;
            }
            .data-table {
                font-size: 12px;
                min-width: 520px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 13px;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 14px;
            }
            .cta-panel .btn {
                display: block;
                width: 100%;
                margin: 8px 0;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #1E3D37;
            --color-primary-light: #2A5048;
            --color-primary-dark: #162E2A;
            --color-accent: #C8873B;
            --color-accent-hover: #A86F2F;
            --color-danger: #C23A2E;
            --color-danger-bg: #FBE8E6;
            --color-bg: #F5F3EF;
            --color-surface: #FFFFFF;
            --color-border: #E4E0D9;
            --color-text: #1E3D37;
            --color-text-secondary: #5A6562;
            --color-text-muted: #B5C0BD;
            --color-text-inverse: #FFFFFF;
            --color-accent-bg: rgba(200, 135, 59, 0.15);
            --color-badge-bg: #EDE9E3;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(30, 61, 55, 0.06);
            --shadow-md: 0 8px 20px rgba(30, 61, 55, 0.12);
            --shadow-lg: 0 16px 40px rgba(30, 61, 55, 0.14);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 48px;
            --spacing-xl: 72px;
            --font-family-sans: 'Noto Sans SC', 'Source Han Sans CN', '思源黑体', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-family-mono: 'IBM Plex Mono', 'Roboto Mono', 'Courier New', monospace;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family-sans);
            font-size: 15px;
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            padding-top: 72px;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            outline: none;
        }
        button:focus, a:focus, input:focus, select:focus, textarea:focus {
            outline: 2px solid rgba(30, 61, 55, 0.3);
            outline-offset: 2px;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            height: 72px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(30, 61, 55, 0.08);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo__icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
        }
        .logo__text {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-fast), border-color var(--transition-fast);
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
            border: 1px solid var(--color-accent);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            color: #fff;
        }
        .btn-secondary {
            background: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }
        .btn-secondary:hover,
        .btn-secondary:focus {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-danger-outline {
            background: transparent;
            color: var(--color-danger);
            border: 1px solid var(--color-danger);
        }
        .btn-danger-outline:hover,
        .btn-danger-outline:focus {
            background: var(--color-danger-bg);
            color: var(--color-danger);
            border-color: var(--color-danger);
        }
        .btn-light {
            background: #fff;
            color: var(--color-primary);
            border: 1px solid var(--color-border);
        }
        .btn-light:hover,
        .btn-light:focus {
            background: #f0ede8;
            color: var(--color-primary);
        }

        /* Mobile nav */
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--color-bg);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }
        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
            transition: transform var(--transition-fast), opacity var(--transition-fast);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-surface);
            z-index: 999;
            padding: var(--spacing-md);
            flex-direction: column;
            gap: 16px;
        }
        .mobile-menu a {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            border-bottom: 1px solid var(--color-border);
            padding-bottom: 12px;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--color-accent);
        }
        .mobile-menu .btn {
            margin-top: 8px;
            width: 100%;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu.open {
            display: flex;
        }

        /* Section base */
        .section {
            padding: var(--spacing-xl) 0;
        }
        .section--light {
            background: var(--color-surface);
        }
        .section--muted {
            background: var(--color-bg);
        }
        .section--dark {
            background: var(--color-primary);
            color: var(--color-text-inverse);
        }
        .section--danger {
            background: var(--color-danger-bg);
            border-top: 1px solid var(--color-danger);
            border-bottom: 1px solid var(--color-danger);
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .section--dark .section-title {
            color: #fff;
        }
        .section--dark .section-subtitle {
            color: var(--color-text-muted);
        }

        /* H1 block */
        .page-hero {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            padding: 40px 0 32px;
        }
        .page-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .page-hero .page-hero__subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 760px;
            line-height: 1.7;
        }

        /* Search section */
        .help-search {
            padding: 40px 0;
            position: relative;
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-lg);
            margin-top: 24px;
            overflow: hidden;
        }
        .help-search::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30,61,55,0.92) 0%, rgba(30,61,55,0.82) 100%);
            border-radius: var(--radius-lg);
        }
        .help-search .container {
            position: relative;
            z-index: 2;
        }
        .help-search__title {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .help-search__desc {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 20px;
        }
        .help-search__form {
            display: flex;
            gap: 12px;
            max-width: 680px;
        }
        .help-search__input {
            flex: 1;
            border: 1px solid rgba(255,255,255,0.25);
            border-radius: var(--radius-sm);
            background: rgba(255,255,255,0.95);
            padding: 12px 16px;
            color: var(--color-text);
            font-size: 14px;
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .help-search__input::placeholder {
            color: var(--color-text-muted);
        }
        .help-search__input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200,135,59,0.25);
        }

        /* Help theme cards */
        .help-theme-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .help-theme-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
        }
        .help-theme-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
        }
        .help-theme-card__icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--color-accent-bg);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            font-weight: 700;
        }
        .help-theme-card__title {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .help-theme-card__list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .help-theme-card__list li {
            font-size: 13px;
            color: var(--color-text-secondary);
            padding: 6px 0;
            border-bottom: 1px dashed var(--color-border);
            line-height: 1.5;
        }
        .help-theme-card__list li:last-child {
            border-bottom: none;
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            background: var(--color-surface);
            border-radius: 0;
        }
        .faq-item:first-child {
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .faq-item:last-child {
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            border-bottom: none;
        }
        details.faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text);
            min-height: 56px;
            transition: color var(--transition-fast);
        }
        details.faq-item summary::-webkit-details-marker {
            display: none;
        }
        details.faq-item summary:hover {
            color: var(--color-accent-hover);
        }
        details.faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-primary);
            transition: transform var(--transition-fast), background var(--transition-fast);
        }
        details.faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
            background: var(--color-accent-bg);
            color: var(--color-accent);
        }
        .faq-item__answer {
            padding: 0 20px 18px 20px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* Contact section */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .contact-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
        }
        .contact-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 16px;
        }
        .contact-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 10px;
            line-height: 1.7;
        }
        .contact-form label {
            font-size: 13px;
            color: var(--color-text-secondary);
            display: block;
            margin-bottom: 6px;
            font-weight: 500;
        }
        .contact-form input,
        .contact-form textarea {
            width: 100%;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            background: #FAFAF8;
            padding: 10px 14px;
            font-size: 14px;
            color: var(--color-text);
            margin-bottom: 16px;
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .contact-form input:focus,
        .contact-form textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(30, 61, 55, 0.15);
        }

        /* Documents */
        .doc-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .doc-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
        }
        .doc-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
        }
        .doc-card__icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 22px;
        }
        .doc-card__title {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .doc-card__desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* CTA */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
        }
        .cta-section .section-title {
            color: #fff;
        }
        .cta-section .section-subtitle {
            color: var(--color-text-muted);
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: #fff;
            padding-top: 48px;
            margin-top: auto;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 32px;
        }
        .site-footer__brand .logo {
            margin-bottom: 16px;
        }
        .site-footer__brand .logo__text {
            color: #fff;
        }
        .site-footer__desc {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.7;
        }
        .site-footer__column-title {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer__links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer__links li {
            margin-bottom: 8px;
        }
        .site-footer__links a {
            font-size: 13px;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .site-footer__links a:hover {
            color: #fff;
        }
        .site-footer__contact {
            display: flex;
            flex-direction: column;
            gap: 6px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .site-footer__contact span {
            line-height: 1.7;
        }
        .site-footer__bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 16px 0;
            margin-top: 24px;
        }
        .site-footer__bottom .container {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding-bottom: 0;
        }
        .site-footer__risk {
            font-size: 13px;
            color: #E75B4F;
            font-weight: 600;
            line-height: 1.6;
        }
        .site-footer__copyright {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .help-theme-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .doc-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .container {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .section-title {
                font-size: 20px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .section {
                padding: 40px 0;
            }
            .help-search__form {
                flex-direction: column;
            }
            .help-theme-grid {
                grid-template-columns: 1fr;
            }
            .doc-grid {
                grid-template-columns: 1fr;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            body {
                padding-top: 64px;
            }
            .site-header {
                height: 64px;
            }
            .mobile-menu {
                top: 64px;
            }
            .logo__text {
                font-size: 14px;
            }
            .section {
                padding: 32px 0;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .btn {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1E3D37;
            --color-primary-light: #2A5048;
            --color-primary-dark: #162E2A;
            --color-accent: #C8873B;
            --color-accent-hover: #A86F2F;
            --color-danger: #C23A2E;
            --color-danger-bg: #FBE8E6;
            --color-bg: #F5F3EF;
            --color-surface: #FFFFFF;
            --color-border: #E4E0D9;
            --color-text: #1E3D37;
            --color-text-secondary: #5A6562;
            --color-text-muted: #B5C0BD;
            --color-text-inverse: #FFFFFF;
            --color-accent-bg: rgba(200, 135, 59, 0.15);
            --color-badge-bg: #EDE9E3;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(30, 61, 55, 0.06);
            --shadow-md: 0 8px 20px rgba(30, 61, 55, 0.12);
            --shadow-lg: 0 16px 40px rgba(30, 61, 55, 0.14);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 48px;
            --spacing-xl: 72px;
            --font-family-sans: 'Noto Sans SC', 'Source Han Sans CN', '思源黑体', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-family-mono: 'IBM Plex Mono', 'Roboto Mono', 'Courier New', monospace;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1200px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family-sans);
            font-size: 15px;
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            outline: none;
        }
        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid rgba(30, 61, 55, 0.3);
            outline-offset: 2px;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }
        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            height: 72px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(30, 61, 55, 0.08);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo__icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }
        .logo__text {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-fast), border-color var(--transition-fast);
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            line-height: 1.4;
            transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--color-accent);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background-color: var(--color-accent-hover);
            color: #FFFFFF;
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-outline {
            background-color: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background-color: var(--color-primary);
            color: #FFFFFF;
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .btn-danger {
            background-color: transparent;
            border: 1px solid var(--color-danger);
            color: var(--color-danger);
        }
        .btn-danger:hover {
            background-color: var(--color-danger-bg);
            border-color: var(--color-danger);
            color: var(--color-danger);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 36px;
            height: 36px;
            padding: 4px;
            border-radius: var(--radius-sm);
            background: none;
            border: 1px solid var(--color-border);
        }
        .hamburger span {
            display: block;
            width: 100%;
            height: 2px;
            background-color: var(--color-primary);
            border-radius: 2px;
            transition: transform var(--transition-fast), opacity var(--transition-fast);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: #FFFFFF;
            z-index: 999;
            padding: var(--spacing-lg) var(--spacing-md);
            overflow-y: auto;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            font-size: 18px;
            font-weight: 500;
            color: var(--color-text);
            padding: var(--spacing-sm) 0;
            border-bottom: 1px solid var(--color-border);
            display: block;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--color-accent-hover);
        }
        .mobile-menu .btn {
            margin-top: var(--spacing-sm);
            width: 100%;
        }
        /* Page Hero Title Block */
        .page-head {
            background-color: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            padding: calc(72px + var(--spacing-xl)) 0 var(--spacing-lg);
        }
        .page-head .container {
            display: grid;
            grid-template-columns: 3fr 2fr;
            gap: var(--spacing-xl);
            align-items: center;
        }
        .page-head__title {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.35;
            margin-bottom: var(--spacing-sm);
        }
        .page-head__subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 560px;
        }
        .page-head__image {
            width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            object-fit: cover;
            aspect-ratio: 3/2;
        }
        /* Section Common */
        .section {
            padding: var(--spacing-lg) 0;
        }
        .section--alt {
            background-color: var(--color-surface);
        }
        .section--dark {
            background-color: var(--color-primary);
            color: var(--color-text-inverse);
        }
        .section__header {
            margin-bottom: var(--spacing-md);
        }
        .section__title {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
        }
        .section--dark .section__title {
            color: #FFFFFF;
        }
        .section__subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 640px;
        }
        .section--dark .section__subtitle {
            color: var(--color-text-muted);
        }
        /* Cards */
        .card {
            background-color: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-normal), border-color var(--transition-normal), transform var(--transition-normal);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }
        .card__image {
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            width: 100%;
            aspect-ratio: 3/2;
            object-fit: cover;
        }
        .card__body {
            padding: var(--spacing-md);
        }
        .card__title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
        }
        .card__text {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        /* Badge */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
            border-radius: var(--radius-full);
            background-color: var(--color-badge-bg);
            color: var(--color-primary);
            white-space: nowrap;
        }
        .badge--accent {
            background-color: var(--color-accent-bg);
            color: var(--color-accent-hover);
        }
        .badge--danger {
            background-color: var(--color-danger-bg);
            color: var(--color-danger);
        }
        /* Steps & Path Cards */
        .path-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .path-card {
            background-color: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition-normal), transform var(--transition-normal);
        }
        .path-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .path-card__image {
            width: 100%;
            aspect-ratio: 3/2;
            object-fit: cover;
            border-radius: 0;
        }
        .path-card__body {
            padding: var(--spacing-md);
        }
        .path-card__title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
        }
        .path-card__steps {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: var(--spacing-xs);
        }
        .path-card__step {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            background-color: var(--color-badge-bg);
            color: var(--color-primary);
        }
        .path-card__step-arrow {
            color: var(--color-accent);
            font-weight: 700;
        }
        /* Guide Cards List */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }
        .guide-card {
            background-color: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition-normal), border-color var(--transition-normal), transform var(--transition-normal);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }
        .guide-card__image {
            width: 100%;
            aspect-ratio: 3/2;
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-muted);
            font-size: 14px;
            letter-spacing: 1px;
        }
        .guide-card__body {
            padding: var(--spacing-md);
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .guide-card__meta {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: var(--spacing-xs);
            flex-wrap: wrap;
        }
        .guide-card__title {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
            line-height: 1.45;
        }
        .guide-card__title a {
            color: var(--color-primary);
        }
        .guide-card__title a:hover {
            color: var(--color-accent-hover);
        }
        .guide-card__summary {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex: 1;
        }
        .guide-card__footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: var(--spacing-sm);
            padding-top: var(--spacing-xs);
            border-top: 1px solid var(--color-border);
        }
        .guide-card__date {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .guide-card__link {
            font-size: 13px;
            font-weight: 500;
            color: var(--color-accent-hover);
        }
        .guide-card__link:hover {
            color: var(--color-accent);
        }
        .empty-state {
            grid-column: span 2;
            text-align: center;
            padding: var(--spacing-xl) 0;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
            color: var(--color-text-secondary);
            font-size: 15px;
        }
        /* Knowledge Nav */
        .knowledge-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            padding: var(--spacing-sm) 0;
        }
        .knowledge-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            font-size: 13px;
            font-weight: 500;
            border-radius: var(--radius-full);
            background-color: var(--color-surface);
            border: 1px solid var(--color-border);
            color: var(--color-primary);
            transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
        }
        .knowledge-nav a:hover {
            background-color: var(--color-primary);
            border-color: var(--color-primary);
            color: #FFFFFF;
        }
        /* Metrics */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .metric-card {
            background-color: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: var(--spacing-md);
            text-align: center;
        }
        .metric-card__label {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-xs);
        }
        .metric-card__value {
            font-family: var(--font-family-mono);
            font-size: 24px;
            font-weight: 700;
            color: var(--color-accent-hover);
        }
        .metric-card__note {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-top: 4px;
        }
        /* Discipline List */
        .discipline-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-sm);
            list-style: none;
        }
        .discipline-item {
            display: flex;
            align-items: baseline;
            gap: var(--spacing-xs);
            padding: var(--spacing-sm);
            background-color: var(--color-surface);
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--color-primary);
            font-size: 14px;
            color: var(--color-text);
        }
        /* Risk Disclosure */
        .risk-box {
            background-color: var(--color-danger-bg);
            border: 1px solid var(--color-danger);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
        }
        .risk-box__title {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-danger);
            margin-bottom: var(--spacing-xs);
        }
        .risk-box__text {
            font-size: 13px;
            color: var(--color-danger);
            line-height: 1.7;
        }
        .risk-box .btn {
            margin-top: var(--spacing-sm);
        }
        /* CTA Section */
        .cta-section {
            background-color: var(--color-primary);
            color: #FFFFFF;
            padding: var(--spacing-lg) 0;
            text-align: center;
        }
        .cta-section__title {
            font-size: 26px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: var(--spacing-xs);
        }
        .cta-section__subtitle {
            font-size: 15px;
            color: var(--color-text-muted);
            margin-bottom: var(--spacing-md);
        }
        .cta-section .btn-group {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-section .btn-primary {
            background-color: var(--color-accent);
            color: #FFFFFF;
        }
        .cta-section .btn-primary:hover {
            background-color: var(--color-accent-hover);
        }
        .cta-section .btn-outline {
            border-color: #FFFFFF;
            color: #FFFFFF;
        }
        .cta-section .btn-outline:hover {
            background-color: #FFFFFF;
            color: var(--color-primary);
        }
        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            color: var(--color-text-muted);
            padding-top: var(--spacing-lg);
            margin-top: auto;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-md);
        }
        .site-footer__brand .logo {
            color: #FFFFFF;
        }
        .site-footer__brand .logo__text {
            color: #FFFFFF;
        }
        .site-footer__desc {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-top: var(--spacing-xs);
        }
        .site-footer__column-title {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
        }
        .site-footer__links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer__links a {
            font-size: 13px;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .site-footer__links a:hover {
            color: #FFFFFF;
        }
        .site-footer__contact {
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .site-footer__bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: var(--spacing-sm) 0;
        }
        .site-footer__bottom .container {
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding-bottom: 0;
        }
        .site-footer__risk {
            font-size: 13px;
            color: var(--color-danger);
            font-weight: 500;
        }
        .site-footer__copyright {
            font-size: 12px;
            color: var(--color-text-muted);
        }
        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .page-head .container {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .page-head__image {
                max-width: 480px;
            }
            .path-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .discipline-list {
                grid-template-columns: 1fr;
            }
            .site-footer .container {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-cta {
                margin-left: auto;
            }
            .hamburger {
                display: flex;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .empty-state {
                grid-column: span 1;
            }
            .path-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
            }
            .site-footer .container {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }
            .page-head {
                padding: calc(72px + var(--spacing-lg)) 0 var(--spacing-md);
            }
            .page-head__title {
                font-size: 24px;
            }
            .section__title {
                font-size: 20px;
            }
        }
        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .cta-section .btn-group {
                flex-direction: column;
                width: 100%;
            }
            .cta-section .btn {
                width: 100%;
            }
            .page-head__title {
                font-size: 22px;
            }
            .page-head__subtitle {
                font-size: 14px;
            }
            .section {
                padding: var(--spacing-md) 0;
            }
            .btn {
                padding: 10px 20px;
                font-size: 13px;
            }
            .badge {
                font-size: 11px;
                padding: 3px 10px;
            }
        }