/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --primary-dark: #0f0f1a;
            --accent: #e8b830;
            --accent-light: #f0d060;
            --accent-dark: #c9a020;
            --secondary: #4a6fa5;
            --secondary-light: #6b8fc5;
            --bg-body: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f0f1a;
            --bg-section-alt: #f0f2f7;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aaa;
            --text-white: #ffffff;
            --text-on-accent: #1a1a2e;
            --border-color: #e2e5ee;
            --border-light: #f0f2f7;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
            --shadow-accent: 0 4px 20px rgba(232, 184, 48, 0.35);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 32px;
            --spacing-lg: 64px;
            --spacing-xl: 96px;
            --max-width: 1200px;
            --header-height: 76px;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 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-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        input,
        textarea {
            font-family: inherit;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 15px;
            background: var(--bg-card);
            color: var(--text-primary);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        input:focus,
        textarea:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(232, 184, 48, 0.15);
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
        }
        h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
        }
        h3 {
            font-size: clamp(1.2rem, 2vw, 1.6rem);
        }
        h4 {
            font-size: 1.2rem;
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        ::selection {
            background: var(--accent);
            color: var(--text-on-accent);
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: 2px solid transparent;
            line-height: 1.2;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--text-on-accent);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            color: var(--text-on-accent);
            transform: translateY(-2px);
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:active {
            transform: translateY(0);
            background: var(--accent-dark);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255, 255, 255, 0.4);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-secondary {
            background: var(--secondary);
            color: var(--text-white);
            border-color: var(--secondary);
        }
        .btn-secondary:hover {
            background: var(--secondary-light);
            border-color: var(--secondary-light);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(74, 111, 165, 0.35);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 18px 44px;
            font-size: 18px;
        }
        @media (max-width: 640px) {
            .btn {
                padding: 12px 24px;
                font-size: 15px;
            }
            .btn-lg {
                padding: 14px 32px;
                font-size: 16px;
            }
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            border-radius: 100px;
            background: rgba(232, 184, 48, 0.12);
            color: var(--accent-dark);
            border: 1px solid rgba(232, 184, 48, 0.25);
            white-space: nowrap;
        }
        .badge-primary {
            background: var(--accent);
            color: var(--text-on-accent);
            border-color: var(--accent);
        }
        .badge-secondary {
            background: rgba(74, 111, 165, 0.10);
            color: var(--secondary);
            border-color: rgba(74, 111, 165, 0.20);
        }
        .badge-light {
            background: rgba(255, 255, 255, 0.15);
            color: var(--text-white);
            border-color: rgba(255, 255, 255, 0.20);
        }

        /* ===== Card ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(232, 184, 48, 0.20);
        }
        .card-body {
            padding: 24px;
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .card-meta i {
            margin-right: 4px;
        }
        .card-link {
            color: var(--secondary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition);
        }
        .card-link:hover {
            color: var(--accent);
        }
        .card-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Section ===== */
        .section {
            padding: var(--spacing-lg) 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark p {
            color: var(--text-white);
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto var(--spacing-md);
            padding: 0 16px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
        }
        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-subtitle {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 8px;
        }
        .section-subtitle::before,
        .section-subtitle::after {
            content: '';
            width: 32px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        /* ===== Header / Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(26, 26, 46, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1000;
            transition: background var(--transition);
        }
        .header.scrolled {
            background: rgba(26, 26, 46, 0.98);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.20);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-on-accent);
            font-weight: 800;
        }
        .logo:hover {
            color: var(--accent);
        }
        .logo span {
            color: var(--accent);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
        }
        .nav a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav a.active {
            color: var(--accent);
            background: rgba(232, 184, 48, 0.10);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 100px;
            padding: 0 16px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition);
        }
        .search-box:focus-within {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--accent);
        }
        .search-box input {
            background: transparent;
            border: none;
            padding: 8px 8px 8px 0;
            font-size: 14px;
            color: var(--text-white);
            width: 140px;
            transition: width var(--transition);
        }
        .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .search-box input:focus {
            width: 180px;
            box-shadow: none;
        }
        .search-box button {
            color: rgba(255, 255, 255, 0.5);
            padding: 8px 4px;
            font-size: 15px;
            transition: color var(--transition);
        }
        .search-box button:hover {
            color: var(--accent);
        }
        .nav-btn {
            padding: 8px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 100px;
            background: var(--accent);
            color: var(--text-on-accent);
            transition: all var(--transition);
            border: 2px solid var(--accent);
        }
        .nav-btn:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            color: var(--text-on-accent);
            transform: translateY(-1px);
            box-shadow: var(--shadow-accent);
        }
        .nav-toggle {
            display: none;
            font-size: 24px;
            color: var(--text-white);
            padding: 4px 8px;
            background: none;
            border: none;
            cursor: pointer;
        }
        @media (max-width: 1024px) {
            .nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: rgba(26, 26, 46, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                gap: 4px;
                box-shadow: 0 16px 48px rgba(0, 0, 0, 0.30);
            }
            .nav.open {
                display: flex;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
            }
            .nav a.active::after {
                display: none;
            }
            .nav-actions {
                width: 100%;
                flex-wrap: wrap;
                margin-top: 8px;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.06);
            }
            .search-box {
                flex: 1;
                min-width: 140px;
            }
            .search-box input {
                width: 100%;
            }
            .search-box input:focus {
                width: 100%;
            }
            .nav-toggle {
                display: block;
            }
            .nav-btn {
                width: 100%;
                text-align: center;
            }
        }
        @media (max-width: 640px) {
            :root {
                --header-height: 64px;
            }
            .logo {
                font-size: 1.25rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
            .nav-actions .btn-outline {
                display: none;
            }
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background: var(--bg-dark);
            overflow: hidden;
            padding-top: var(--header-height);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            animation: heroZoom 20s ease-in-out infinite alternate;
        }
        @keyframes heroZoom {
            0% {
                transform: scale(1.05);
            }
            100% {
                transform: scale(1.15);
            }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.92) 0%, rgba(15, 15, 26, 0.80) 50%, rgba(26, 26, 46, 0.92) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            padding-top: 48px;
            padding-bottom: 48px;
        }
        .hero-content {
            max-width: 600px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(232, 184, 48, 0.15);
            border: 1px solid rgba(232, 184, 48, 0.25);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 24px;
        }
        .hero h1 {
            color: var(--text-white);
            margin-bottom: 16px;
            font-weight: 800;
            letter-spacing: -1px;
        }
        .hero h1 span {
            color: var(--accent);
        }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 32px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-stat h3 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stat p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 0;
        }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-visual img {
            width: 100%;
            max-width: 520px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-floating {
            position: absolute;
            bottom: -16px;
            left: -16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            gap: 12px;
            border: 1px solid var(--border-light);
        }
        .hero-floating i {
            font-size: 28px;
            color: var(--accent);
        }
        .hero-floating span {
            font-weight: 700;
            color: var(--text-primary);
        }
        .hero-floating small {
            color: var(--text-light);
            font-size: 13px;
        }
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero p {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-stats {
                justify-content: center;
            }
            .hero-visual {
                display: none;
            }
        }
        @media (max-width: 640px) {
            .hero {
                min-height: auto;
                padding: 120px 0 60px;
            }
            .hero-stats {
                gap: 20px;
                flex-wrap: wrap;
            }
            .hero-stat h3 {
                font-size: 1.4rem;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
        }

        /* ===== Grid / Layout ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-auto {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .grid-auto {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Features / Icons ===== */
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(232, 184, 48, 0.20);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            background: linear-gradient(135deg, rgba(232, 184, 48, 0.12), rgba(232, 184, 48, 0.04));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--accent);
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--accent);
            color: var(--text-on-accent);
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== Stats / Numbers ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(232, 184, 48, 0.20);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.6);
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 2rem;
            }
        }

        /* ===== News / Article List (CMS) ===== */
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: rgba(232, 184, 48, 0.15);
        }
        .news-thumb {
            width: 240px;
            min-height: 160px;
            flex-shrink: 0;
            object-fit: cover;
            border-radius: 0;
        }
        .news-body {
            padding: 20px 20px 20px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }
        .news-body .badge {
            margin-bottom: 8px;
            align-self: flex-start;
        }
        .news-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-body h3 a {
            color: var(--text-primary);
        }
        .news-body h3 a:hover {
            color: var(--accent);
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
        }
        .news-meta i {
            margin-right: 4px;
        }
        .empty-news {
            text-align: center;
            padding: 48px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
            color: var(--text-light);
        }
        .empty-news i {
            font-size: 48px;
            color: var(--border-color);
            margin-bottom: 16px;
            display: block;
        }
        @media (max-width: 768px) {
            .news-card {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 200px;
                border-radius: var(--radius-md) var(--radius-md) 0 0;
            }
            .news-body {
                padding: 16px;
            }
        }

        /* ===== Process / Timeline ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .process-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: linear-gradient(to right, var(--accent), var(--secondary), var(--accent));
            opacity: 0.3;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .process-number {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            background: var(--accent);
            color: var(--text-on-accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            box-shadow: 0 0 0 4px rgba(232, 184, 48, 0.15);
            transition: all var(--transition);
        }
        .process-step:hover .process-number {
            transform: scale(1.1);
            box-shadow: 0 0 0 6px rgba(232, 184, 48, 0.25);
        }
        .process-step h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 16px;
            }
            .process-grid::before {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .process-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(232, 184, 48, 0.15);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            background: none;
            border: none;
            text-align: left;
            cursor: pointer;
            gap: 16px;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question i {
            font-size: 18px;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 0;
            max-height: 0;
            overflow: hidden;
            transition: all 0.4s ease;
        }
        .faq-item.active .faq-answer {
            padding: 0 24px 20px;
            max-height: 300px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            margin-bottom: 32px;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: var(--spacing-lg) 0 var(--spacing-md);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: var(--spacing-md);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: var(--spacing-md);
        }
        .footer-brand .logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
            margin-bottom: 16px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 18px;
            transition: all var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--text-on-accent);
            border-color: var(--accent);
            transform: translateY(-2px);
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--text-on-accent);
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
            z-index: 999;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            transition: all var(--transition);
            border: 2px solid transparent;
        }
        .back-top.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .back-top:hover {
            background: var(--accent-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-accent);
        }
        @media (max-width: 640px) {
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 16px;
            }
        }

        /* ===== Responsive Helpers ===== */
        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-md) 0;
            }
            .section-header {
                margin-bottom: 24px;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 480px) {
            .section {
                padding: 32px 0;
            }
            .container {
                padding: 0 12px;
            }
        }

        /* ===== Skeleton / Misc ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 16px auto 20px;
        }
        .divider-left {
            margin: 16px 0 20px;
        }
        .text-accent {
            color: var(--accent);
        }
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mt-4 {
            margin-top: 32px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .gap-2 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --primary-gradient: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
            --secondary: #fd79a8;
            --secondary-gradient: linear-gradient(135deg, #fd79a8 0%, #fdcb6e 100%);
            --accent: #00cec9;
            --bg: #0f0f1a;
            --bg-alt: #1a1a2e;
            --bg-card: #1e1e36;
            --bg-card-hover: #2a2a4a;
            --text: #f0f0f5;
            --text-muted: #9c9cb5;
            --text-dim: #6c6c8a;
            --border: #2d2d50;
            --border-light: #3d3d60;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 16px 48px rgba(108, 92, 231, 0.25);
            --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-height: 76px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
        }
        h3 {
            font-size: clamp(1.15rem, 2vw, 1.5rem);
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            color: var(--text-muted);
            margin-bottom: 1rem;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        section {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-title h2 {
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 1.1rem;
            max-width: 640px;
            margin: 0 auto;
            color: var(--text-muted);
        }
        .section-tag {
            display: inline-block;
            background: rgba(108, 92, 231, 0.18);
            color: var(--primary-light);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(108, 92, 231, 0.25);
            backdrop-filter: blur(4px);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.35);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(108, 92, 231, 0.5);
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn-secondary {
            background: var(--secondary-gradient);
            box-shadow: 0 4px 20px rgba(253, 121, 168, 0.3);
        }
        .btn-secondary:hover {
            box-shadow: 0 8px 32px rgba(253, 121, 168, 0.45);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary-light);
            color: var(--primary-light);
            box-shadow: none;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 8px 32px rgba(108, 92, 231, 0.3);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }

        /* ===== Header & Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary-gradient);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
        }
        .logo span {
            color: var(--primary-light);
            font-weight: 400;
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 32px;
            flex: 1;
            justify-content: center;
        }
        .nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-gradient);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav a:hover {
            color: var(--text);
        }
        .nav a:hover::after {
            width: 100%;
        }
        .nav a.active {
            color: var(--primary-light);
        }
        .nav a.active::after {
            width: 100%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-left: 16px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 0 16px;
            height: 40px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
        }
        .search-box input {
            background: transparent;
            border: none;
            padding: 6px 8px;
            font-size: 0.85rem;
            color: var(--text);
            width: 120px;
        }
        .search-box input::placeholder {
            color: var(--text-dim);
        }
        .search-box button {
            color: var(--text-muted);
            font-size: 0.9rem;
            padding: 4px;
        }
        .nav-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-gradient);
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(108, 92, 231, 0.45);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 4px 8px;
            background: none;
            border: none;
        }

        /* ===== Hero ===== */
        .hero {
            padding: 140px 0 80px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.88) 0%, rgba(15, 15, 26, 0.6) 60%, rgba(108, 92, 231, 0.25) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 720px;
        }
        .hero-content .hero-tag {
            display: inline-block;
            background: rgba(108, 92, 231, 0.25);
            color: var(--primary-light);
            padding: 6px 20px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(108, 92, 231, 0.3);
            backdrop-filter: blur(8px);
        }
        .hero-content h1 {
            font-size: clamp(2.4rem, 5.5vw, 4rem);
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fff 40%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 580px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 分类导航卡片 ===== */
        .guide-nav {
            background: var(--bg-alt);
            padding: 60px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
        }
        .guide-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--primary);
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .guide-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: var(--primary-gradient);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 16px;
            box-shadow: 0 8px 24px rgba(108, 92, 231, 0.3);
        }
        .guide-card .icon.sec {
            background: var(--secondary-gradient);
            box-shadow: 0 8px 24px rgba(253, 121, 168, 0.3);
        }
        .guide-card .icon.acc {
            background: linear-gradient(135deg, #00cec9, #81ecec);
            box-shadow: 0 8px 24px rgba(0, 206, 201, 0.3);
        }
        .guide-card .icon.org {
            background: linear-gradient(135deg, #fdcb6e, #f39c12);
            box-shadow: 0 8px 24px rgba(253, 203, 110, 0.3);
        }
        .guide-card h3 {
            margin-bottom: 8px;
            font-size: 1.15rem;
        }
        .guide-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .guide-card .badge {
            display: inline-block;
            margin-top: 12px;
            background: rgba(108, 92, 231, 0.15);
            color: var(--primary-light);
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* ===== 内容板块 ===== */
        .content-section {
            padding: 80px 0;
        }
        .content-section.alt {
            background: var(--bg-alt);
        }

        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .content-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }
        .content-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-hover);
        }
        .content-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            background: var(--bg-alt);
        }
        .content-card .card-body {
            padding: 24px;
        }
        .content-card .card-body .tag {
            display: inline-block;
            background: rgba(108, 92, 231, 0.15);
            color: var(--primary-light);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.7rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .content-card .card-body .tag.green {
            background: rgba(0, 206, 201, 0.15);
            color: #81ecec;
        }
        .content-card .card-body .tag.orange {
            background: rgba(253, 203, 110, 0.15);
            color: #fdcb6e;
        }
        .content-card .card-body .tag.pink {
            background: rgba(253, 121, 168, 0.15);
            color: #fd79a8;
        }
        .content-card .card-body h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .content-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .content-card .card-body .meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-dim);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .content-card .card-body .meta i {
            margin-right: 4px;
        }
        .content-card .card-body .meta a {
            color: var(--primary-light);
            font-weight: 500;
        }
        .content-card .card-body .meta a:hover {
            text-decoration: underline;
        }

        /* ===== 特色区块 ===== */
        .features {
            padding: 80px 0;
            background: var(--bg-alt);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
            align-items: center;
        }
        .features-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
            min-height: 360px;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        }
        .features-visual::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.3), rgba(0, 0, 0, 0.5));
        }
        .features-visual .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(8px);
            border: 2px solid rgba(255, 255, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: #fff;
            transition: var(--transition);
            z-index: 2;
        }
        .features-visual .play-btn:hover {
            background: var(--primary);
            transform: translate(-50%, -50%) scale(1.05);
        }
        .features-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .feature-item {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            padding: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .feature-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateX(4px);
        }
        .feature-item .f-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
        }
        .feature-item .f-icon.sec {
            background: var(--secondary-gradient);
        }
        .feature-item .f-icon.acc {
            background: linear-gradient(135deg, #00cec9, #81ecec);
        }
        .feature-item .f-icon.org {
            background: linear-gradient(135deg, #fdcb6e, #f39c12);
        }
        .feature-item h4 {
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .feature-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 数据统计 ===== */
        .stats {
            padding: 60px 0;
            background: var(--bg);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 16px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-item .num {
            font-size: 2.6rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq {
            padding: 80px 0;
            background: var(--bg-alt);
            border-top: 1px solid var(--border);
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item summary {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            color: var(--primary-light);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-item[open] summary i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta {
            padding: 80px 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            position: relative;
            text-align: center;
        }
        .cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.85) 0%, rgba(108, 92, 231, 0.4) 100%);
            z-index: 1;
        }
        .cta .container {
            position: relative;
            z-index: 2;
        }
        .cta h2 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            margin-bottom: 16px;
            color: #fff;
        }
        .cta p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-alt);
            border-top: 1px solid var(--border);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 320px;
            margin-bottom: 20px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .footer-col h4 {
            font-size: 1rem;
            margin-bottom: 16px;
            color: var(--text);
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .footer-bottom a {
            color: var(--primary-light);
        }
        .footer-bottom a:hover {
            text-decoration: underline;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .nav {
                gap: 20px;
            }
            .search-box input {
                width: 80px;
            }
        }

        @media (max-width: 768px) {
            .header .container {
                flex-wrap: wrap;
            }
            .nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(15, 15, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px 32px;
                gap: 16px;
                border-bottom: 1px solid var(--border);
                align-items: stretch;
            }
            .nav.open {
                display: flex;
            }
            .nav a {
                padding: 10px 0;
                font-size: 1rem;
            }
            .nav-actions {
                flex-direction: column;
                margin-left: 0;
                gap: 12px;
                padding-top: 12px;
                border-top: 1px solid var(--border);
            }
            .search-box {
                width: 100%;
            }
            .search-box input {
                width: 100%;
            }
            .nav-btn {
                justify-content: center;
                width: 100%;
            }
            .nav-toggle {
                display: block;
            }
            .hero {
                padding: 120px 0 60px;
                min-height: 380px;
            }
            section {
                padding: 56px 0;
            }
            .guide-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .guide-card {
                padding: 24px 16px 20px;
            }
            .guide-card .icon {
                width: 52px;
                height: 52px;
                font-size: 1.3rem;
            }
            .content-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .num {
                font-size: 2rem;
            }
            .features-grid {
                gap: 24px;
            }
            .features-visual {
                min-height: 240px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-title {
                margin-bottom: 36px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-content p {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .cta .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .cta .btn-group .btn {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
            .feature-item {
                flex-direction: column;
                align-items: center;
                text-align: center;
                padding: 16px;
            }
            .feature-item .f-icon {
                margin-bottom: 4px;
            }
            .footer-social {
                justify-content: center;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #6C3DFF;
            --primary-dark: #5228D8;
            --primary-light: #8B6BFF;
            --primary-bg: rgba(108, 61, 255, 0.08);
            --secondary: #FF3D6C;
            --secondary-light: #FF6B8F;
            --accent: #00D4AA;
            --accent-dark: #00B894;
            --bg-dark: #0D0D1A;
            --bg-card: #1A1A2E;
            --bg-elevated: #222240;
            --bg-body: #0F0F1E;
            --bg-section: #14142A;
            --text-primary: #F0F0FF;
            --text-secondary: #B8B8D4;
            --text-muted: #7A7A9A;
            --border-color: rgba(108, 61, 255, 0.2);
            --border-light: rgba(255, 255, 255, 0.06);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 40px rgba(108, 61, 255, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1280px;
            --container-pad: 24px;
            --header-h: 78px;
        }

        /* ===== 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(--text-primary);
            background: var(--bg-body);
            background-image: radial-gradient(ellipse at 20% 50%, rgba(108, 61, 255, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, rgba(255, 61, 108, 0.03) 0%, transparent 50%);
            min-height: 100vh;
            overflow-x: hidden;
            padding-top: var(--header-h);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
        }

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

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(13, 13, 26, 0.88);
            backdrop-filter: blur(20px) saturate(1.4);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 26px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 12px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 61, 255, 0.35);
        }
        .logo span:not(.logo-icon) {
            color: var(--primary-light);
            font-weight: 400;
        }
        .logo:hover {
            color: var(--text-primary);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: flex-end;
        }
        .nav>a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav>a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav>a:hover {
            color: var(--text-primary);
            background: var(--primary-bg);
        }
        .nav>a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }
        .nav>a.active {
            color: var(--text-primary);
            background: var(--primary-bg);
        }
        .nav>a.active::after {
            transform: translateX(-50%) scaleX(1);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: 18px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 0 16px;
            height: 40px;
            transition: var(--transition);
            min-width: 180px;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.08);
            box-shadow: 0 0 20px rgba(108, 61, 255, 0.1);
        }
        .search-box input {
            flex: 1;
            background: none;
            color: var(--text-primary);
            font-size: 14px;
            padding: 8px 0;
            min-width: 0;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box button {
            padding: 6px 8px;
            color: var(--text-muted);
            font-size: 15px;
            transition: var(--transition);
        }
        .search-box button:hover {
            color: var(--primary-light);
        }
        .nav-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(108, 61, 255, 0.3);
            white-space: nowrap;
        }
        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(108, 61, 255, 0.45);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .nav-btn i {
            font-size: 14px;
        }
        .nav-toggle {
            display: none;
            font-size: 24px;
            color: var(--text-primary);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 60px 0 40px;
            background: var(--bg-section);
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(108, 61, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .article-hero .container {
            position: relative;
            z-index: 1;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .article-breadcrumb a {
            color: var(--text-muted);
        }
        .article-breadcrumb a:hover {
            color: var(--primary-light);
        }
        .article-breadcrumb span {
            color: var(--text-secondary);
        }
        .article-breadcrumb .sep {
            color: var(--text-muted);
            font-size: 12px;
        }
        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: var(--primary-bg);
            color: var(--primary-light);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            border: 1px solid rgba(108, 61, 255, 0.15);
        }
        .article-category-badge i {
            font-size: 12px;
        }
        .article-hero h1 {
            font-size: clamp(28px, 4.5vw, 52px);
            font-weight: 800;
            line-height: 1.2;
            max-width: 900px;
            background: linear-gradient(135deg, #F0F0FF 0%, #B8B8D4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i {
            font-size: 14px;
            color: var(--primary-light);
        }
        .article-meta .meta-divider {
            width: 4px;
            height: 4px;
            background: var(--text-muted);
            border-radius: 50%;
            opacity: 0.4;
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 48px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-main {
            min-width: 0;
        }
        .article-content {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
        }
        .article-content .featured-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow-md);
        }
        .article-content .featured-image img {
            width: 100%;
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .article-content .featured-image:hover img {
            transform: scale(1.01);
        }
        .article-body-text {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-body-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        .article-body-text h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 28px 0 12px;
        }
        .article-body-text p {
            margin-bottom: 18px;
            color: var(--text-secondary);
        }
        .article-body-text ul,
        .article-body-text ol {
            margin: 12px 0 20px;
            padding-left: 24px;
        }
        .article-body-text ul li {
            list-style: disc;
            margin-bottom: 8px;
            color: var(--text-secondary);
        }
        .article-body-text ol li {
            list-style: decimal;
            margin-bottom: 8px;
            color: var(--text-secondary);
        }
        .article-body-text a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body-text a:hover {
            color: var(--primary);
        }
        .article-body-text blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-bg);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body-text blockquote p:last-child {
            margin-bottom: 0;
        }
        .article-body-text img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body-text .highlight-box {
            background: var(--bg-elevated);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            margin: 24px 0;
        }
        .article-body-text .highlight-box .highlight-title {
            font-weight: 700;
            color: var(--primary-light);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-tags .tag {
            padding: 6px 16px;
            background: var(--primary-bg);
            color: var(--primary-light);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(108, 61, 255, 0.1);
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: rgba(108, 61, 255, 0.2);
            transform: translateY(-1px);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }
        .article-share span {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }
        .article-share .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 16px;
            transition: var(--transition);
        }
        .article-share .share-btn:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card .sidebar-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card .sidebar-title i {
            color: var(--primary-light);
            font-size: 18px;
        }
        .sidebar-related .related-item {
            display: flex;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .sidebar-related .related-item:last-child {
            border-bottom: none;
        }
        .sidebar-related .related-item:hover {
            padding-left: 6px;
        }
        .sidebar-related .related-item .related-img {
            width: 72px;
            height: 54px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-elevated);
        }
        .sidebar-related .related-item .related-info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-related .related-item .related-info h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 4px;
        }
        .sidebar-related .related-item .related-info .related-date {
            font-size: 12px;
            color: var(--text-muted);
        }
        .sidebar-cta {
            text-align: center;
            padding: 28px 20px;
            background: linear-gradient(145deg, var(--bg-card), var(--bg-elevated));
            border: 1px solid var(--border-color);
        }
        .sidebar-cta .cta-icon {
            font-size: 40px;
            color: var(--primary-light);
            margin-bottom: 12px;
        }
        .sidebar-cta h4 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .sidebar-cta p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .sidebar-cta .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 28px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(108, 61, 255, 0.3);
        }
        .sidebar-cta .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(108, 61, 255, 0.45);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 24px;
            margin-bottom: 12px;
        }
        .footer-brand .logo .logo-icon {
            width: 36px;
            height: 36px;
            font-size: 18px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 12px 0 16px;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 18px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            max-width: 600px;
            margin: 40px auto;
        }
        .not-found-box .nf-icon {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .not-found-box h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .not-found-box .back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(108, 61, 255, 0.3);
        }
        .not-found-box .back-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(108, 61, 255, 0.45);
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --container-pad: 16px;
                --header-h: 64px;
            }
            .nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(13, 13, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                gap: 4px;
                max-height: calc(100vh - var(--header-h));
                overflow-y: auto;
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav>a {
                padding: 12px 16px;
                font-size: 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav>a::after {
                display: none;
            }
            .nav-actions {
                flex-direction: column;
                width: 100%;
                margin-left: 0;
                margin-top: 12px;
                gap: 10px;
            }
            .search-box {
                width: 100%;
                min-width: 0;
            }
            .nav-btn {
                width: 100%;
                justify-content: center;
                padding: 12px 24px;
            }
            .nav-toggle {
                display: block;
            }
            .article-hero {
                padding: 32px 0 28px;
            }
            .article-hero h1 {
                font-size: 24px;
            }
            .article-content {
                padding: 20px 16px;
                border-radius: var(--radius-md);
            }
            .article-content .featured-image {
                margin-bottom: 20px;
            }
            .article-body-text {
                font-size: 15px;
            }
            .article-body-text h2 {
                font-size: 20px;
                margin: 24px 0 12px;
            }
            .article-body-text h3 {
                font-size: 18px;
                margin: 20px 0 10px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .article-meta .meta-divider {
                display: none;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .sidebar-card {
                padding: 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .not-found-box {
                padding: 40px 16px;
            }
            .not-found-box .nf-icon {
                font-size: 48px;
            }
            .not-found-box h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 20px;
            }
            .article-category-badge {
                font-size: 12px;
                padding: 4px 12px;
            }
            .article-content {
                padding: 16px 12px;
            }
            .article-body-text {
                font-size: 14px;
                line-height: 1.8;
            }
            .article-body-text h2 {
                font-size: 18px;
            }
            .article-body-text h3 {
                font-size: 16px;
            }
            .article-tags .tag {
                font-size: 12px;
                padding: 4px 12px;
            }
            .article-share {
                flex-wrap: wrap;
            }
        }