/* roulang page: index */
/* ==================== 设计变量 ==================== */
        :root {
            --color-primary: #C8943E;
            --color-primary-dark: #A67B2F;
            --color-primary-light: #E0C06E;
            --color-primary-bg: #FDF6E8;
            --color-accent: #C0392B;
            --color-accent-light: #E74C3C;
            --color-dark: #1C1C2E;
            --color-dark-secondary: #2A2A40;
            --color-text: #1A1A1A;
            --color-text-secondary: #5A5A6E;
            --color-text-muted: #8E8E9E;
            --color-bg: #FAF8F5;
            --color-bg-alt: #F2EFEB;
            --color-white: #FFFFFF;
            --color-border: #E5E2DC;
            --color-border-light: #F0EDE8;
            --color-success: #27AE60;
            --color-warning: #F39C12;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-gold: 0 4px 20px rgba(200,148,62,0.20);
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', var(--font-sans);
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ==================== Reset & Base ==================== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        ul, ol {
            list-style: none;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-dark);
        }
        h1 { font-size: clamp(28px, 4vw, 48px); }
        h2 { font-size: clamp(22px, 3vw, 36px); }
        h3 { font-size: clamp(18px, 2.2vw, 24px); }
        h4 { font-size: clamp(16px, 1.5vw, 20px); }

        /* ==================== Container ==================== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ==================== Header & Nav ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 24px;
        }
        .logo-wrap {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            font-weight: 700;
        }
        .logo-text {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-dark);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--color-primary-dark);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--color-bg-alt);
            border-radius: var(--radius-full);
            padding: 4px;
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            border-radius: var(--radius-full);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-secondary);
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
        }
        .nav-tab:hover {
            color: var(--color-dark);
            background: rgba(200,148,62,0.08);
        }
        .nav-tab.active {
            background: var(--color-white);
            color: var(--color-primary-dark);
            box-shadow: var(--shadow-sm);
            font-weight: 700;
        }
        .nav-cta {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            border-radius: var(--radius-full);
            transition: all var(--transition-base);
            box-shadow: var(--shadow-gold);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: linear-gradient(135deg, var(--color-primary-dark), #8B691F);
            box-shadow: 0 6px 24px rgba(200,148,62,0.30);
            transform: translateY(-1px);
            color: #fff;
        }
        .nav-cta:active {
            transform: translateY(0);
            box-shadow: var(--shadow-gold);
        }
        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-dark);
            background: var(--color-bg-alt);
            transition: background var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            background: var(--color-border);
        }
        @media (max-width: 768px) {
            .nav-tabs {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-white);
                border-radius: 0;
                padding: 12px 16px;
                flex-direction: column;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-slow);
                z-index: 999;
                border-bottom: 2px solid var(--color-border);
            }
            .nav-tabs.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-tab {
                padding: 12px 20px;
                border-radius: var(--radius-md);
                font-size: 15px;
                width: 100%;
                justify-content: center;
            }
            .nav-tab.active {
                background: var(--color-primary-bg);
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            .logo-text {
                font-size: 16px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
            .nav-cta {
                padding: 7px 14px;
                font-size: 12px;
            }
        }

        /* ==================== Section 通用 ==================== */
        .section {
            padding: 64px 0;
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-lg {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header .section-subtitle {
            color: var(--color-text-secondary);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-badge {
            display: inline-block;
            padding: 5px 14px;
            background: var(--color-primary-bg);
            color: var(--color-primary-dark);
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-full);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        @media (max-width: 768px) {
            .section { padding: 40px 0; }
            .section-lg { padding: 52px 0; }
            .section-header { margin-bottom: 28px; }
        }

        /* ==================== Hero ==================== */
        .hero {
            position: relative;
            padding: 80px 0 96px;
            background: var(--color-dark);
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 1;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(28,28,46,0.88) 0%, rgba(28,28,46,0.72) 50%, rgba(28,28,46,0.92) 100%);
            z-index: 2;
        }
        .hero-particles {
            position: absolute;
            inset: 0;
            z-index: 3;
            pointer-events: none;
            opacity: 0.4;
        }
        .hero .container {
            position: relative;
            z-index: 4;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-content {
            color: #fff;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(200,148,62,0.2);
            border: 1px solid rgba(200,148,62,0.35);
            border-radius: var(--radius-full);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary-light);
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }
        .hero-badge .dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--color-primary);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.5); }
        }
        .hero-content h1 {
            font-size: clamp(30px, 4.5vw, 50px);
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .hero-content h1 .gold {
            color: var(--color-primary-light);
        }
        .hero-content .hero-desc {
            font-size: 17px;
            color: rgba(255,255,255,0.78);
            margin-bottom: 28px;
            line-height: 1.7;
            max-width: 480px;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 700;
            border-radius: var(--radius-full);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            box-shadow: var(--shadow-gold);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--color-primary-dark), #8B691F);
            box-shadow: 0 8px 28px rgba(200,148,62,0.35);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.35);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.06);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 9px 18px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
        }
        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-card-stack {
            position: relative;
            width: 100%;
            max-width: 380px;
            aspect-ratio: 3/4;
        }
        .hero-card-stack .card-front {
            position: absolute;
            inset: 0;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            z-index: 3;
            background: var(--color-white);
        }
        .hero-card-stack .card-front img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-card-stack .card-behind {
            position: absolute;
            inset: -12px 12px 12px -12px;
            border-radius: var(--radius-xl);
            background: rgba(200,148,62,0.25);
            z-index: 2;
            transform: rotate(-3deg);
        }
        .hero-card-stack .card-behind-2 {
            position: absolute;
            inset: -20px 20px 20px -20px;
            border-radius: var(--radius-xl);
            background: rgba(200,148,62,0.12);
            z-index: 1;
            transform: rotate(2deg);
        }
        @media (max-width: 900px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
                text-align: center;
            }
            .hero-content .hero-desc {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-visual {
                display: none;
            }
            .hero {
                padding: 56px 0 64px;
                min-height: auto;
            }
        }

        /* ==================== Stats Strip ==================== */
        .stats-strip {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            padding: 28px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            color: var(--color-primary-dark);
            font-family: var(--font-heading);
            letter-spacing: -0.02em;
        }
        .stat-item .stat-label {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 4px;
            font-weight: 500;
        }
        .stat-divider {
            width: 1px;
            background: var(--color-border);
            align-self: stretch;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-divider { display: none; }
        }

        /* ==================== Features Cards ==================== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .feature-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-primary-light);
        }
        .feature-card .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: var(--color-primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 26px;
            color: var(--color-primary-dark);
            transition: all var(--transition-base);
        }
        .feature-card:hover .feature-icon {
            background: var(--color-primary);
            color: #fff;
            transform: scale(1.08);
        }
        .feature-card h4 {
            margin-bottom: 8px;
            font-size: 17px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        @media (max-width: 900px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; }
        }

        /* ==================== Category Entry Section ==================== */
        .category-entry-section {
            background: var(--color-bg-alt);
            padding: 48px 0;
        }
        .category-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .category-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text);
            transition: all var(--transition-base);
            cursor: pointer;
            box-shadow: var(--shadow-xs);
        }
        .category-chip:hover {
            border-color: var(--color-primary);
            color: var(--color-primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            background: var(--color-primary-bg);
        }
        .category-chip .chip-icon {
            font-size: 18px;
        }
        .category-highlight-card {
            margin-top: 36px;
            background: var(--color-white);
            border-radius: var(--radius-xl);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1fr;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .category-highlight-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .category-highlight-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--color-dark);
        }
        .category-highlight-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .category-highlight-card:hover .category-highlight-img img {
            transform: scale(1.04);
        }
        .category-highlight-body {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .category-highlight-body h3 {
            margin-bottom: 10px;
        }
        .category-highlight-body p {
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        @media (max-width: 768px) {
            .category-highlight-card {
                grid-template-columns: 1fr;
            }
            .category-highlight-body {
                padding: 20px;
            }
        }

        /* ==================== Latest Posts List ==================== */
        .posts-list {
            display: grid;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .post-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 20px;
            background: var(--color-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-xs);
            border: 1px solid transparent;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .post-item:hover {
            border-color: var(--color-primary-light);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .post-item .post-date {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: var(--color-primary-bg);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--color-primary-dark);
            font-size: 13px;
            text-align: center;
            line-height: 1.2;
        }
        .post-item .post-date .day {
            font-size: 20px;
            font-weight: 800;
        }
        .post-item .post-info {
            flex: 1;
            min-width: 0;
        }
        .post-item .post-info h4 {
            font-size: 15px;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .post-item .post-info .post-meta {
            font-size: 12px;
            color: var(--color-text-muted);
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .post-item .post-arrow {
            flex-shrink: 0;
            color: var(--color-text-muted);
            font-size: 18px;
            transition: all var(--transition-base);
        }
        .post-item:hover .post-arrow {
            color: var(--color-primary);
            transform: translateX(3px);
        }
        .empty-posts {
            text-align: center;
            padding: 36px;
            color: var(--color-text-muted);
            font-size: 15px;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 2px dashed var(--color-border);
        }
        @media (max-width: 520px) {
            .post-item {
                padding: 14px 16px;
                gap: 12px;
            }
            .post-item .post-date {
                width: 44px;
                height: 44px;
                font-size: 11px;
            }
            .post-item .post-date .day {
                font-size: 16px;
            }
        }

        /* ==================== Highlight Grid ==================== */
        .highlight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .highlight-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .highlight-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .highlight-card .hl-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .highlight-card .hl-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .highlight-card:hover .hl-img img {
            transform: scale(1.05);
        }
        .highlight-card .hl-body {
            padding: 20px;
        }
        .highlight-card .hl-body h4 {
            font-size: 16px;
            margin-bottom: 6px;
        }
        .highlight-card .hl-body p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .highlight-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .highlight-grid { grid-template-columns: 1fr; }
        }

        /* ==================== Steps / Process ==================== */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            position: relative;
            padding: 28px 20px;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .step-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: var(--shadow-gold);
        }
        .step-item h4 {
            font-size: 16px;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .steps-list { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .steps-list { grid-template-columns: 1fr; }
        }

        /* ==================== FAQ ==================== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: grid;
            gap: 10px;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-primary-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--color-dark);
            gap: 12px;
            user-select: none;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: var(--color-primary-bg);
        }
        .faq-question .faq-arrow {
            flex-shrink: 0;
            transition: transform var(--transition-base);
            font-size: 14px;
            color: var(--color-text-muted);
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ==================== CTA Section ==================== */
        .cta-section {
            background: var(--color-dark);
            padding: 64px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.7);
            margin-bottom: 28px;
            font-size: 16px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ==================== Footer ==================== */
        .site-footer {
            background: var(--color-dark-secondary);
            color: rgba(255,255,255,0.65);
            padding: 40px 0 28px;
            font-size: 13px;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 24px;
            align-items: center;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 16px;
            color: #fff;
        }
        .footer-brand span {
            color: var(--color-primary-light);
        }
        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .footer-links a {
            color: rgba(255,255,255,0.55);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--color-primary-light);
        }
        .footer-bottom {
            margin-top: 20px;
            padding-top: 16px;
            border-top: 1px solid rgba(255,255,255,0.08);
            text-align: center;
            font-size: 12px;
            color: rgba(255,255,255,0.4);
        }
        @media (max-width: 520px) {
            .footer-inner {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
        }

        /* ==================== Utility ==================== */
        .text-center { text-align: center; }
        .text-gold { color: var(--color-primary); }
        .mt-0 { margin-top: 0; }
        .mb-0 { margin-bottom: 0; }
        .sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

        /* ==================== Focus / Accessibility ==================== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .nav-tab:focus-visible {
            outline-offset: -1px;
            border-radius: var(--radius-full);
        }

        /* ==================== Animations ==================== */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-in {
            animation: fadeInUp 0.5s ease forwards;
        }

/* roulang page: article */
:root {
            --primary: #e4a832;
            --primary-hover: #cf8e1a;
            --secondary: #1b1b2f;
            --background: #f8f9fa;
            --surface: #ffffff;
            --text: #222;
            --text-soft: #555;
            --text-muted: #888;
            --border: #e0e0e0;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-hover: 0 8px 24px rgba(0,0,0,0.12);
            --transition: 0.25s ease;
            --max-width: 1140px;
            --nav-height: 64px;
        }

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

        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
            background: var(--background);
            color: var(--text);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; }
        button, input { font-family: inherit; }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== HEADER / NAV ===== */
        .site-header {
            background: var(--secondary);
            color: #fff;
            position: sticky; top: 0; z-index: 100;
            height: var(--nav-height);
            box-shadow: 0 2px 6px rgba(0,0,0,0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--primary);
            white-space: nowrap;
        }
        .nav-logo span { color: #fff; font-weight: 500; margin-left: 2px; }

        .nav-tabs {
            display: flex;
            gap: 8px;
        }
        .nav-tab {
            padding: 6px 18px;
            border-radius: 24px;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255,255,255,0.8);
            transition: all var(--transition);
            background: transparent;
            border: 1px solid transparent;
        }
        .nav-tab:hover {
            color: #fff;
            background: rgba(255,255,255,0.12);
            border-color: rgba(255,255,255,0.2);
        }
        .nav-tab.active {
            background: var(--primary);
            color: #1b1b2f;
            border-color: var(--primary);
            font-weight: 600;
        }
        .nav-tab.active:hover {
            background: var(--primary-hover);
            color: #1b1b2f;
            border-color: var(--primary-hover);
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .nav-tabs {
                position: absolute;
                top: var(--nav-height);
                left: 0; right: 0;
                background: var(--secondary);
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                display: none;
                box-shadow: 0 4px 12px rgba(0,0,0,0.3);
            }
            .nav-tabs.open {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .nav-tab {
                border-radius: 6px;
                padding: 10px 16px;
            }
        }

        /* ===== ARTICLE HERO ===== */
        .article-hero {
            background: linear-gradient(135deg, #1b1b2f 0%, #2a2a40 100%);
            color: #fff;
            padding: 48px 0;
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            right: -60px; top: -40px;
            width: 300px; height: 300px;
            background: url('/assets/images/backpic/back-1.png') no-repeat center/cover;
            opacity: 0.15; border-radius: 50%;
        }
        .article-hero .container {
            position: relative;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 16px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
        }
        .article-category {
            background: var(--primary);
            color: #1b1b2f;
            padding: 2px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.85rem;
        }
        .article-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .article-date {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
        }

        /* ===== ARTICLE CONTENT ===== */
        .article-body {
            padding: 48px 0;
        }
        .article-content {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 36px;
            box-shadow: var(--shadow);
            line-height: 1.8;
            font-size: 1.05rem;
        }
        .article-content h2 {
            font-size: 1.6rem;
            margin: 32px 0 12px;
            color: var(--secondary);
        }
        .article-content h3 {
            font-size: 1.3rem;
            margin: 24px 0 8px;
            color: var(--secondary);
        }
        .article-content p {
            margin-bottom: 16px;
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .not-found {
            text-align: center;
            padding: 60px 0;
        }
        .not-found h2 {
            font-size: 1.8rem;
            margin-bottom: 12px;
        }
        .not-found a {
            color: var(--primary);
            font-weight: 600;
            text-decoration: underline;
        }

        /* ===== RELATED POSTS ===== */
        .section-related {
            padding: 48px 0;
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 28px;
            color: var(--secondary);
            position: relative;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            margin-top: 10px;
            border-radius: 2px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-img {
            height: 160px;
            background-size: cover;
            background-position: center;
        }
        .related-body {
            padding: 16px 20px;
        }
        .related-body h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--secondary);
        }
        .related-body .date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .related-body a {
            color: var(--primary);
            font-weight: 600;
            display: inline-block;
            margin-top: 8px;
        }

        /* ===== FAQ ===== */
        .section-faq {
            background: var(--surface);
            padding: 48px 0;
            box-shadow: 0 -1px 6px rgba(0,0,0,0.04);
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 18px 0;
        }
        .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--secondary);
        }
        .faq-answer {
            display: none;
            padding-top: 10px;
            color: var(--text-soft);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-icon {
            font-size: 1.2rem;
            transition: transform 0.2s;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        /* ===== CTA ===== */
        .section-cta {
            background: linear-gradient(135deg, var(--primary) 0%, #f5c842 100%);
            text-align: center;
            padding: 56px 24px;
            color: #1b1b2f;
        }
        .section-cta h2 {
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .btn-cta {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            padding: 14px 36px;
            border-radius: 32px;
            font-weight: 700;
            font-size: 1rem;
            transition: background var(--transition);
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }
        .btn-cta:hover {
            background: #2d2d44;
            box-shadow: 0 6px 18px rgba(0,0,0,0.25);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--secondary);
            color: rgba(255,255,255,0.7);
            padding: 36px 0;
            text-align: center;
            font-size: 0.9rem;
        }
        .footer-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }
        .footer-brand {
            font-weight: 700;
            color: var(--primary);
            font-size: 1.2rem;
        }
        .footer-brand span { color: #fff; }
        .footer-links a {
            color: rgba(255,255,255,0.7);
            margin: 0 12px;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            margin-top: 16px;
            opacity: 0.7;
            font-size: 0.8rem;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .container { padding: 0 20px; }
            .article-title { font-size: 1.8rem; }
        }
        @media (max-width: 768px) {
            .article-hero { padding: 36px 0; }
            .article-content { padding: 24px; }
            .article-title { font-size: 1.6rem; }
            .related-grid { grid-template-columns: 1fr; }
        }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --color-primary: #c9a44b;
            --color-primary-hover: #d4b35f;
            --color-primary-light: #f5ecd7;
            --color-primary-dark: #a07828;
            --color-accent: #c41e3a;
            --color-accent-hover: #d9364f;
            --color-bg: #faf8f2;
            --color-bg-alt: #f0ebe0;
            --color-surface: #ffffff;
            --color-surface-hover: #fdfaf3;
            --color-text: #1a1a2e;
            --color-text-strong: #0d0d1a;
            --color-text-weak: #6b7280;
            --color-text-muted: #9ca3af;
            --color-border: #e5e0d5;
            --color-border-light: #f0ece4;
            --color-shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.06);
            --color-shadow-md: 0 4px 16px rgba(26, 26, 46, 0.08);
            --color-shadow-lg: 0 8px 32px rgba(26, 26, 46, 0.12);
            --color-shadow-xl: 0 16px 48px rgba(26, 26, 46, 0.16);
            --color-nav-bg: #1a1a2e;
            --color-nav-text: #e0ded4;
            --color-nav-active: #c9a44b;
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 28px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', 'STSong', serif;
            --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
            --container-max: 1200px;
            --container-narrow: 900px;
            --header-height: 68px;
        }

        /* ============ Reset & Base ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            letter-spacing: 0.01em;
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text-strong);
            letter-spacing: -0.01em;
        }

        h1 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
        }
        h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
        }
        h3 {
            font-size: clamp(1.2rem, 2.2vw, 1.45rem);
            font-weight: 700;
        }

        /* ============ Container ============ */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-narrow {
            max-width: var(--container-narrow);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ============ Header & Navigation ============ */
        .site-header {
            background: var(--color-nav-bg);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid rgba(201, 164, 75, 0.3);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            flex-wrap: wrap;
            gap: 8px;
        }

        .header-logo {
            font-family: var(--font-display);
            font-size: 1.3rem;
            font-weight: 800;
            color: #ffffff;
            white-space: nowrap;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition-fast);
        }

        .header-logo:hover {
            color: var(--color-primary);
        }

        .header-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            color: #1a1a2e;
            flex-shrink: 0;
        }

        .header-logo span {
            color: var(--color-primary);
        }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            padding: 4px;
        }

        .nav-tab {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-nav-text);
            transition: all var(--transition-smooth);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.02em;
        }

        .nav-tab:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-tab.active {
            color: #1a1a2e;
            background: var(--color-nav-active);
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(201, 164, 75, 0.35);
        }

        .nav-tab:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .header-cta-mobile {
            display: none;
            padding: 8px 16px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.85rem;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }

        .header-cta-mobile:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: var(--color-shadow-md);
        }

        @media (max-width: 768px) {
            .header-inner {
                height: auto;
                padding: 10px 0;
                gap: 10px;
                justify-content: center;
            }

            .header-logo {
                font-size: 1.1rem;
            }

            .nav-tabs {
                width: 100%;
                justify-content: center;
                gap: 2px;
                padding: 3px;
                border-radius: var(--radius-md);
            }

            .nav-tab {
                padding: 8px 14px;
                font-size: 0.85rem;
                border-radius: var(--radius-sm);
            }

            .header-cta-mobile {
                display: inline-flex;
                position: absolute;
                right: 16px;
                top: 50%;
                transform: translateY(-50%);
            }

            .header-inner {
                position: relative;
                justify-content: center;
                padding-right: 60px;
            }
        }

        @media (max-width: 520px) {
            .header-logo {
                font-size: 0.95rem;
                letter-spacing: 0;
            }
            .header-logo .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.85rem;
            }
            .nav-tab {
                padding: 7px 10px;
                font-size: 0.78rem;
            }
            .header-cta-mobile {
                padding: 6px 10px;
                font-size: 0.75rem;
                right: 8px;
            }
            .header-inner {
                padding-right: 50px;
            }
        }

        /* ============ Main ============ */
        .site-main {
            flex: 1;
        }

        /* ============ Category Banner ============ */
        .category-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 80px 0;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg,
                    rgba(26, 26, 46, 0.88) 0%,
                    rgba(26, 26, 46, 0.7) 40%,
                    rgba(26, 26, 46, 0.55) 100%);
            z-index: 1;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg,
                    transparent 0%,
                    var(--color-primary) 30%,
                    var(--color-accent) 50%,
                    var(--color-primary) 70%,
                    transparent 100%);
            z-index: 2;
        }

        .banner-content {
            position: relative;
            z-index: 3;
            text-align: center;
            color: #ffffff;
        }

        .banner-breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .banner-breadcrumb a {
            color: var(--color-primary-light);
            transition: color var(--transition-fast);
        }

        .banner-breadcrumb a:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }

        .banner-breadcrumb .separator {
            color: rgba(255, 255, 255, 0.35);
            font-size: 0.8rem;
        }

        .banner-content h1 {
            color: #ffffff;
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }

        .banner-content h1 .highlight {
            color: var(--color-primary);
            position: relative;
        }

        .banner-description {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .banner-stats {
            display: flex;
            gap: 32px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .banner-stat {
            text-align: center;
            color: #ffffff;
        }

        .banner-stat .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-primary);
            display: block;
            line-height: 1;
        }

        .banner-stat .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .category-banner {
                padding: 50px 0;
            }
            .banner-content h1 {
                font-size: 1.7rem;
            }
            .banner-description {
                font-size: 0.95rem;
            }
            .banner-stats {
                gap: 18px;
            }
            .banner-stat .stat-number {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .category-banner {
                padding: 36px 0;
            }
            .banner-content h1 {
                font-size: 1.35rem;
            }
            .banner-description {
                font-size: 0.85rem;
            }
            .banner-stats {
                gap: 10px;
            }
            .banner-stat .stat-number {
                font-size: 1.2rem;
            }
            .banner-stat .stat-label {
                font-size: 0.7rem;
            }
        }

        /* ============ Section Common ============ */
        .section {
            padding: 64px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-header h2 {
            font-size: clamp(1.5rem, 3.2vw, 2.1rem);
            font-weight: 800;
            color: var(--color-text-strong);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-weak);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-header .section-divider {
            display: inline-block;
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            border-radius: 2px;
            margin-top: 12px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .section-header {
                margin-bottom: 28px;
            }
        }

        /* ============ Subcategory Tags ============ */
        .subcat-section {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 20px 0;
            position: sticky;
            top: var(--header-height);
            z-index: 900;
        }

        .subcat-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
        }

        .subcat-tag {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-text);
            background: var(--color-bg-alt);
            border: 2px solid transparent;
            transition: all var(--transition-smooth);
            cursor: pointer;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .subcat-tag:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary);
            color: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--color-shadow-sm);
        }

        .subcat-tag.active {
            background: var(--color-primary);
            color: #1a1a2e;
            font-weight: 700;
            border-color: var(--color-primary);
            box-shadow: var(--color-shadow-md);
        }

        .subcat-tag:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        @media (max-width: 768px) {
            .subcat-section {
                padding: 14px 0;
                top: auto;
                position: relative;
                z-index: auto;
            }
            .subcat-tag {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 520px) {
            .subcat-tags {
                gap: 6px;
            }
            .subcat-tag {
                padding: 5px 10px;
                font-size: 0.72rem;
                border-radius: 100px;
            }
        }

        /* ============ Article Cards Grid ============ */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .article-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--color-shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--color-shadow-lg);
            border-color: var(--color-border);
        }

        .article-card:focus-within {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .card-image-wrapper {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--color-bg-alt);
        }

        .card-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
            border-radius: 0;
        }

        .article-card:hover .card-image-wrapper img {
            transform: scale(1.06);
        }

        .card-tag-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            display: inline-block;
            padding: 5px 12px;
            background: var(--color-accent);
            color: #ffffff;
            font-size: 0.75rem;
            font-weight: 700;
            border-radius: 100px;
            letter-spacing: 0.04em;
            z-index: 2;
        }

        .card-level-badge {
            position: absolute;
            top: 14px;
            right: 14px;
            display: inline-block;
            padding: 4px 10px;
            background: rgba(26, 26, 46, 0.75);
            color: #ffffff;
            font-size: 0.7rem;
            font-weight: 600;
            border-radius: 100px;
            z-index: 2;
            backdrop-filter: blur(4px);
        }

        .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text-strong);
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .article-card:hover .card-body h3 {
            color: var(--color-primary-dark);
        }

        .card-body .card-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.65;
            margin-bottom: 14px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--color-border-light);
        }

        .card-meta .meta-read-time {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .card-meta .meta-read-time::before {
            content: '⏱';
            font-size: 0.85rem;
        }

        .card-link-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
        }

        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 640px) {
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 18px;
                max-width: 480px;
                margin: 0 auto;
            }
            .card-body {
                padding: 16px 16px 18px;
            }
            .card-body h3 {
                font-size: 1rem;
            }
        }

        /* ============ Hot Ranking Section ============ */
        .ranking-section {
            background: var(--color-nav-bg);
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .ranking-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(201, 164, 75, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .ranking-section .section-header h2 {
            color: #ffffff;
        }

        .ranking-section .section-header .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        .ranking-section .section-header .section-divider {
            background: linear-gradient(90deg, var(--color-primary), #ffffff);
        }

        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-smooth);
            position: relative;
        }

        .ranking-item:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(201, 164, 75, 0.4);
            transform: translateX(4px);
        }

        .rank-number {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            border-radius: var(--radius-sm);
            color: #1a1a2e;
        }

        .rank-number.rank-1 {
            background: linear-gradient(135deg, #ffd700, #f0c040);
            font-size: 1.3rem;
        }
        .rank-number.rank-2 {
            background: linear-gradient(135deg, #c0c0c0, #a8a8a8);
        }
        .rank-number.rank-3 {
            background: linear-gradient(135deg, #cd7f32, #b86928);
        }
        .rank-number.rank-other {
            background: rgba(255, 255, 255, 0.12);
            color: rgba(255, 255, 255, 0.8);
        }

        .rank-info {
            flex: 1;
            min-width: 0;
        }

        .rank-info .rank-title {
            font-weight: 700;
            font-size: 1rem;
            color: #ffffff;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color var(--transition-fast);
        }

        .ranking-item:hover .rank-title {
            color: var(--color-primary);
        }

        .rank-info .rank-tag {
            font-size: 0.75rem;
            color: var(--color-primary);
            font-weight: 600;
        }

        .rank-arrow {
            flex-shrink: 0;
            color: rgba(255, 255, 255, 0.4);
            font-size: 1.2rem;
            transition: all var(--transition-fast);
        }

        .ranking-item:hover .rank-arrow {
            color: var(--color-primary);
            transform: translateX(3px);
        }

        @media (max-width: 640px) {
            .ranking-item {
                padding: 12px 14px;
                gap: 10px;
            }
            .rank-number {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .rank-info .rank-title {
                font-size: 0.9rem;
            }
        }

        /* ============ FAQ Accordion ============ */
        .faq-section {
            background: var(--color-surface);
        }

        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-bg);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--color-shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text-strong);
            text-align: left;
            background: transparent;
            cursor: pointer;
            transition: all var(--transition-fast);
            gap: 12px;
            letter-spacing: 0.01em;
        }

        .faq-question:hover {
            color: var(--color-primary-dark);
            background: var(--color-primary-light);
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: -2px;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary-light);
            border-radius: 50%;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-primary-dark);
            transition: all var(--transition-smooth);
        }

        .faq-item.open .faq-icon {
            background: var(--color-primary);
            color: #1a1a2e;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.95rem;
            color: var(--color-text-weak);
            line-height: 1.75;
        }

        @media (max-width: 640px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer-inner {
                padding: 0 16px 16px;
                font-size: 0.85rem;
            }
            .faq-icon {
                width: 24px;
                height: 24px;
                font-size: 0.9rem;
            }
        }

        /* ============ CTA Section ============ */
        .cta-section {
            background: linear-gradient(160deg, #1a1a2e 0%, #252540 40%, #1a1a2e 100%);
            padding: 64px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(201, 164, 75, 0.2) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-content h2 {
            color: #ffffff;
            font-size: clamp(1.5rem, 3.5vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            color: #1a1a2e;
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: 100px;
            letter-spacing: 0.03em;
            transition: all var(--transition-bounce);
            box-shadow: 0 6px 24px rgba(201, 164, 75, 0.35);
            cursor: pointer;
            border: none;
        }

        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(201, 164, 75, 0.5);
            background: linear-gradient(135deg, var(--color-primary-hover) 0%, var(--color-primary) 100%);
        }

        .btn-cta:active {
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(201, 164, 75, 0.3);
        }

        .btn-cta:focus-visible {
            outline: 3px solid #ffffff;
            outline-offset: 3px;
        }

        .btn-cta .cta-arrow {
            font-size: 1.3rem;
            transition: transform var(--transition-fast);
        }

        .btn-cta:hover .cta-arrow {
            transform: translateX(4px);
        }

        @media (max-width: 640px) {
            .cta-section {
                padding: 44px 0;
            }
            .btn-cta {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #141420;
            color: rgba(255, 255, 255, 0.65);
            padding: 40px 0 28px;
            border-top: 3px solid rgba(201, 164, 75, 0.3);
            margin-top: auto;
        }

        .footer-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 24px;
        }

        .footer-brand {
            font-family: var(--font-display);
            font-size: 1.2rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.02em;
        }

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

        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            font-weight: 500;
            transition: color var(--transition-fast);
            letter-spacing: 0.01em;
        }

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

        .footer-bottom {
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            line-height: 1.6;
        }

        @media (max-width: 640px) {
            .footer-inner {
                flex-direction: column;
                text-align: center;
                gap: 16px;
            }
            .footer-links {
                justify-content: center;
                gap: 14px;
            }
            .footer-brand {
                font-size: 1rem;
            }
        }

        /* ============ Utility Classes ============ */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ============ Skeleton Loading (optional subtle effect) ============ */
        @keyframes shimmer {
            0% { background-position: -200px 0; }
            100% { background-position: 200px 0; }
        }

        /* ============ Scrollbar Styling ============ */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg-alt);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--color-border);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--color-text-muted);
        }

        /* ============ Print Styles ============ */
        @media print {
            .site-header,
            .subcat-section,
            .cta-section,
            .site-footer {
                display: none;
            }
            body {
                font-size: 14px;
                color: #000;
                background: #fff;
            }
        }