/* roulang page: index */
:root {
            --primary: #6C3FFF;
            --primary-dark: #4F2DB8;
            --primary-light: #8F6BFF;
            --secondary: #FF6B35;
            --accent: #00C9A7;
            --bg-dark: #0B0E1A;
            --bg-card: #121626;
            --bg-card-hover: #1A1F35;
            --bg-section: #0F1322;
            --text-primary: #F5F7FF;
            --text-secondary: #B0B8D1;
            --text-muted: #6B7394;
            --border-color: #1E2640;
            --border-light: #2A3350;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 30px rgba(0,0,0,0.4);
            --shadow-hover: 0 16px 48px rgba(108,63,255,0.2);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 14, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            flex-shrink: 0;
        }

        .logo span {
            background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-search {
            flex: 1;
            max-width: 520px;
            position: relative;
            display: none;
        }

        .nav-search input {
            width: 100%;
            height: 44px;
            padding: 0 20px 0 48px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            color: var(--text-primary);
            font-size: 15px;
            transition: var(--transition);
        }

        .nav-search input::placeholder {
            color: var(--text-muted);
        }

        .nav-search input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(108,63,255,0.15);
        }

        .nav-search .search-icon {
            position: absolute;
            left: 18px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 16px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            flex-shrink: 0;
        }

        .nav-links li a {
            display: flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }

        .nav-links li a:hover {
            color: var(--text-primary);
            background: rgba(108,63,255,0.08);
        }

        .nav-links li a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(108,63,255,0.35);
        }

        .nav-links li a.active:hover {
            background: var(--primary-dark);
        }

        .nav-download-btn {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--secondary), #FF4500);
            border-radius: 50px;
            color: #fff !important;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(255,107,53,0.3);
            margin-left: 8px;
        }

        .nav-download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(255,107,53,0.45);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            border-color: var(--primary);
        }

        /* ===== Hero ===== */
        .hero {
            padding: 140px 0 80px;
            position: relative;
            overflow: hidden;
            min-height: 90vh;
            display: flex;
            align-items: center;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(108,63,255,0.15) 0%, transparent 70%),
                        radial-gradient(ellipse at 70% 60%, rgba(255,107,53,0.08) 0%, transparent 60%);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: clamp(36px, 5vw, 58px);
            font-weight: 900;
            line-height: 1.12;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }

        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 520px;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 50px;
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            transition: var(--transition);
            box-shadow: 0 8px 32px rgba(108,63,255,0.3);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(108,63,255,0.45);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            background: transparent;
            border: 1.5px solid var(--border-light);
            border-radius: 50px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            transition: var(--transition);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            background: rgba(108,63,255,0.06);
            transform: translateY(-3px);
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border-color);
        }

        .hero-stat h3 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
        }

        .hero-stat h3 i {
            color: var(--accent);
            margin-right: 6px;
        }

        .hero-stat p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }

        .hero-visual img {
            max-width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: 0 30px 80px rgba(108,63,255,0.2);
            transform: perspective(800px) rotateY(-6deg) rotateX(2deg);
            transition: var(--transition);
        }

        .hero-visual img:hover {
            transform: perspective(800px) rotateY(0deg) rotateX(0deg);
        }

        .hero-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: var(--secondary);
            color: #fff;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(255,107,53,0.4);
            animation: pulse-badge 2s infinite;
        }

        @keyframes pulse-badge {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }

        /* ===== Sections ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--bg-section);
        }

        .section-title {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-title h2 {
            font-size: clamp(28px, 3.5vw, 40px);
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-title p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        .section-title .tag {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(108,63,255,0.12);
            color: var(--primary-light);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        /* ===== Features Grid ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }

        .feature-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            background: rgba(108,63,255,0.1);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary-light);
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: rgba(108,63,255,0.2);
            transform: scale(1.05);
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== Categories ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .category-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            cursor: pointer;
        }

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

        .category-card .cat-img {
            height: 140px;
            overflow: hidden;
            position: relative;
        }

        .category-card .cat-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .category-card:hover .cat-img img {
            transform: scale(1.08);
        }

        .category-card .cat-body {
            padding: 18px 20px 22px;
        }

        .category-card .cat-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .category-card .cat-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .category-card .cat-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }

        .category-card .cat-meta .badge {
            padding: 3px 12px;
            background: rgba(108,63,255,0.12);
            color: var(--primary-light);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== Latest Posts (CMS) ===== */
        .post-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .post-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .post-card .post-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .post-card .post-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .post-card:hover .post-img img {
            transform: scale(1.06);
        }

        .post-card .post-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
        }

        .post-card .post-body {
            padding: 20px 22px 24px;
        }

        .post-card .post-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .post-card .post-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .post-card .post-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }

        .post-card .post-meta i {
            margin-right: 4px;
        }

        .post-card .post-meta a {
            color: var(--primary-light);
            font-weight: 600;
        }

        .post-card .post-meta a:hover {
            color: var(--text-primary);
        }

        .empty-posts {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border: 1px dashed var(--border-color);
            border-radius: var(--radius-md);
            color: var(--text-muted);
            font-size: 16px;
        }

        .empty-posts i {
            font-size: 40px;
            display: block;
            margin-bottom: 16px;
            color: var(--border-light);
        }

        /* ===== Steps / Process ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }

        .step-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .step-number {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin: 0 auto 18px;
            transition: var(--transition);
        }

        .step-card:hover .step-number {
            transform: scale(1.1);
            box-shadow: 0 8px 24px rgba(108,63,255,0.3);
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .step-connector {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: var(--border-light);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
            gap: 16px;
        }

        .faq-question i {
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 14px;
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary-light);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.35s ease;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            padding: 0 24px 20px;
            max-height: 400px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(108,63,255,0.08), rgba(255,107,53,0.06));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 50% 50%, rgba(108,63,255,0.04), transparent 60%);
            animation: cta-glow 8s infinite alternate;
        }

        @keyframes cta-glow {
            0% { transform: translate(0, 0); }
            100% { transform: translate(10%, 10%); }
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: clamp(26px, 3vw, 38px);
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 28px;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 32px;
        }

        .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: 15px;
            color: var(--text-secondary);
            max-width: 320px;
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-primary);
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-secondary);
        }

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

        /* ===== Mobile Nav ===== */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .hero-content p {
                margin-left: auto;
                margin-right: auto;
            }

            .hero-buttons {
                justify-content: center;
            }

            .hero-stats {
                justify-content: center;
            }

            .hero-visual {
                display: none;
            }

            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .post-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(11, 14, 26, 0.98);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-color);
                padding: 16px 24px;
                flex-direction: column;
                gap: 4px;
                box-shadow: 0 20px 60px rgba(0,0,0,0.6);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links li a {
                padding: 12px 18px;
                width: 100%;
                justify-content: center;
            }

            .nav-download-btn {
                margin-left: 0;
                justify-content: center;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-search {
                display: block;
                max-width: 200px;
            }

            .nav-search input {
                height: 38px;
                font-size: 14px;
                padding: 0 14px 0 38px;
            }

            .nav-search .search-icon {
                left: 14px;
                font-size: 14px;
            }

            .hero {
                padding: 120px 0 60px;
                min-height: auto;
            }

            .hero-content h1 {
                font-size: 32px;
            }

            .hero-content p {
                font-size: 16px;
            }

            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }

            .hero-stat h3 {
                font-size: 22px;
            }

            .section {
                padding: 56px 0;
            }

            .section-title {
                margin-bottom: 36px;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .category-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .post-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .cta-section {
                padding: 40px 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .site-header .container {
                height: 64px;
                gap: 10px;
            }

            .logo {
                font-size: 18px;
            }

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }

            .nav-search {
                max-width: 140px;
            }

            .nav-search input {
                height: 34px;
                font-size: 13px;
                padding: 0 10px 0 32px;
            }

            .nav-search .search-icon {
                left: 10px;
                font-size: 12px;
            }

            .hero {
                padding: 100px 0 40px;
            }

            .hero-content h1 {
                font-size: 26px;
            }

            .hero-content p {
                font-size: 15px;
            }

            .btn-primary, .btn-secondary {
                padding: 14px 28px;
                font-size: 15px;
                width: 100%;
                justify-content: center;
            }

            .hero-buttons {
                flex-direction: column;
                gap: 10px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .feature-card {
                padding: 24px 20px;
            }

            .post-card .post-body {
                padding: 16px 18px 20px;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-answer {
                font-size: 14px;
            }

            .cta-section {
                padding: 32px 20px;
                border-radius: var(--radius-md);
            }

            .cta-buttons {
                flex-direction: column;
                gap: 10px;
            }

            .section-title h2 {
                font-size: 24px;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --secondary: #fd79a8;
            --accent: #00cec9;
            --bg: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #222240;
            --bg-elevated: #252545;
            --text: #f0f0f5;
            --text-light: #b0b0c8;
            --text-muted: #7a7a9a;
            --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: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== 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);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
        }

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

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

        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;
        }

        ul {
            list-style: none;
        }

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

        /* ===== Header / 导航 ===== */
        .site-header {
            position: sticky;
            top: 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(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text);
            font-weight: 700;
            font-size: 20px;
            flex-shrink: 0;
        }

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

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.35);
        }

        .nav-search {
            flex: 1;
            max-width: 420px;
            position: relative;
            display: none;
        }

        .nav-search .search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 16px;
            pointer-events: none;
        }

        .nav-search input {
            width: 100%;
            padding: 10px 18px 10px 46px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 50px;
            color: var(--text);
            font-size: 14px;
            transition: border var(--transition), box-shadow var(--transition);
        }

        .nav-search input::placeholder {
            color: var(--text-muted);
        }

        .nav-search input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.2);
        }

        nav {
            display: flex;
            align-items: center;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-links li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-links li a i {
            font-size: 14px;
        }

        .nav-links li a:hover {
            background: var(--bg-card);
            color: var(--text);
        }

        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.35);
        }

        .nav-links li a.nav-download-btn {
            background: linear-gradient(135deg, var(--secondary), #e84393);
            color: #fff;
            padding: 8px 22px;
            box-shadow: 0 4px 16px rgba(253, 121, 168, 0.35);
        }

        .nav-links li a.nav-download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(253, 121, 168, 0.45);
        }

        .nav-toggle {
            display: none;
            font-size: 24px;
            color: var(--text);
            padding: 8px;
            cursor: pointer;
            background: var(--bg-card);
            border-radius: 10px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: var(--bg-card-hover);
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.12), rgba(253, 121, 168, 0.08));
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

        .article-banner .container {
            position: relative;
            z-index: 1;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .article-breadcrumb a {
            color: var(--text-muted);
        }

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

        .article-breadcrumb .sep {
            color: var(--border-light);
        }

        .article-breadcrumb .current {
            color: var(--text-light);
        }

        .article-meta-bar {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .article-meta-bar .category-tag {
            display: inline-block;
            padding: 4px 16px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        .article-meta-bar .meta-date {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta-bar .meta-date i {
            font-size: 13px;
        }

        .article-banner h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            max-width: 860px;
            letter-spacing: -0.3px;
        }

        .article-banner .article-desc {
            font-size: 17px;
            color: var(--text-light);
            margin-top: 16px;
            max-width: 720px;
            line-height: 1.7;
        }

        /* ===== 文章正文 ===== */
        .article-main {
            padding: 60px 0 80px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }

        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 40px 44px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .article-content .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-light);
        }

        .article-content .article-body p {
            margin-bottom: 1.4em;
        }

        .article-content .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin: 1.8em 0 0.8em;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border);
        }

        .article-content .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            margin: 1.4em 0 0.6em;
        }

        .article-content .article-body img {
            border-radius: var(--radius-sm);
            margin: 1.5em 0;
            box-shadow: var(--shadow);
        }

        .article-content .article-body ul,
        .article-content .article-body ol {
            margin: 1em 0 1.4em 1.6em;
        }

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

        .article-content .article-body ul li {
            list-style: disc;
        }

        .article-content .article-body ol li {
            list-style: decimal;
        }

        .article-content .article-body a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-content .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-elevated);
            padding: 16px 24px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }

        .article-content .article-body code {
            background: var(--bg-elevated);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--secondary);
        }

        /* 内容未找到 */
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }

        .article-not-found i {
            font-size: 56px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .article-not-found h2 {
            font-size: 28px;
            color: var(--text);
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-light);
            margin-bottom: 24px;
        }

        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .article-not-found .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(108, 92, 231, 0.3);
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-card h3 i {
            color: var(--primary-light);
            font-size: 18px;
        }

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

        .sidebar-list li a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: all var(--transition);
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.5;
        }

        .sidebar-list li a:hover {
            background: var(--bg-card-hover);
            border-color: var(--primary);
            transform: translateX(4px);
            color: var(--text);
        }

        .sidebar-list li a .rank {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--bg-elevated);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--text-muted);
        }

        .sidebar-list li a .rank.top {
            background: linear-gradient(135deg, var(--secondary), #e84393);
            color: #fff;
        }

        .sidebar-list li a .rank.top2 {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
        }

        .sidebar-download-box {
            text-align: center;
            padding: 24px 16px;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.1), rgba(253, 121, 168, 0.06));
            border-radius: var(--radius-sm);
            border: 1px dashed var(--border-light);
        }

        .sidebar-download-box .dl-icon {
            font-size: 40px;
            color: var(--primary-light);
            margin-bottom: 12px;
        }

        .sidebar-download-box h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .sidebar-download-box p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .sidebar-download-box .btn-dl {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: linear-gradient(135deg, var(--secondary), #e84393);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(253, 121, 168, 0.3);
        }

        .sidebar-download-box .btn-dl:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(253, 121, 168, 0.4);
            color: #fff;
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--bg);
            border-top: 1px solid var(--border);
        }

        .related-section .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .related-section .section-title i {
            color: var(--primary-light);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

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

        .related-card .rc-img {
            height: 180px;
            background: var(--bg-elevated);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .related-card .rc-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }

        .related-card .rc-body {
            padding: 20px 20px 24px;
        }

        .related-card .rc-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .rc-body .rc-meta {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .related-card .rc-body .rc-meta i {
            font-size: 12px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
            font-size: 18px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 18px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
        }

        .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: 13px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
        }

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

        /* ===== 响应式 ===== */
        @media (min-width: 1024px) {
            .nav-search {
                display: block;
            }
        }

        @media (max-width: 1023px) {
            .article-layout {
                grid-template-columns: 1fr;
            }

            .article-banner h1 {
                font-size: 28px;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .nav-links li a {
                padding: 6px 14px;
                font-size: 13px;
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                gap: 12px;
            }

            .nav-search {
                display: none;
            }

            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(15, 15, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                box-shadow: var(--shadow);
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-links li a {
                padding: 12px 18px;
                font-size: 15px;
                width: 100%;
                border-radius: var(--radius-sm);
            }

            .nav-links li a.nav-download-btn {
                text-align: center;
                justify-content: center;
            }

            .nav-toggle {
                display: flex;
            }

            .article-banner {
                padding: 48px 0 40px;
            }

            .article-banner h1 {
                font-size: 24px;
            }

            .article-content {
                padding: 24px 20px;
            }

            .article-content .article-body h2 {
                font-size: 20px;
            }

            .article-content .article-body h3 {
                font-size: 17px;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .article-banner .article-desc {
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .article-banner h1 {
                font-size: 20px;
            }

            .article-meta-bar {
                gap: 12px;
            }

            .sidebar-card {
                padding: 20px 16px;
            }

            .sidebar-download-box {
                padding: 16px 12px;
            }

            .related-card .rc-img {
                height: 140px;
            }
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== 选中样式 ===== */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6C5CE7;
            --primary-dark: #5A4BD1;
            --primary-light: #8B7CF7;
            --primary-bg: rgba(108, 92, 231, 0.08);
            --secondary: #FD79A8;
            --secondary-light: #FDCB6E;
            --accent: #00CEC9;
            --bg: #F8F9FE;
            --bg-card: #FFFFFF;
            --bg-dark: #1A1A2E;
            --bg-dark-card: #16213E;
            --text: #2D3436;
            --text-light: #636E72;
            --text-lighter: #B2BEC3;
            --text-white: #FFFFFF;
            --text-dark-bg: #E8E8F0;
            --border: #E8E8F0;
            --border-light: #F1F2F6;
            --shadow-sm: 0 2px 8px rgba(108, 92, 231, 0.08);
            --shadow-md: 0 8px 24px rgba(108, 92, 231, 0.12);
            --shadow-lg: 0 16px 48px rgba(108, 92, 231, 0.16);
            --shadow-hover: 0 12px 36px rgba(108, 92, 231, 0.20);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
        }
        h1 {
            font-size: 2.5rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
        }

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

        /* ===== 头部导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--text);
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-search {
            flex: 1;
            max-width: 420px;
            position: relative;
            display: none;
        }
        .nav-search .search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-lighter);
            font-size: 0.95rem;
            pointer-events: none;
        }
        .nav-search input {
            width: 100%;
            padding: 10px 16px 10px 44px;
            background: var(--border-light);
            border-radius: 50px;
            font-size: 0.9rem;
            color: var(--text);
            border: 2px solid transparent;
            transition: var(--transition);
        }
        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.12);
        }
        .nav-search input::placeholder {
            color: var(--text-lighter);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(108, 92, 231, 0.3);
        }
        .nav-links li a.nav-download-btn {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            padding: 8px 20px;
            box-shadow: 0 4px 14px rgba(108, 92, 231, 0.3);
        }
        .nav-links li a.nav-download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(108, 92, 231, 0.4);
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--border-light);
            color: var(--text);
            font-size: 1.2rem;
            cursor: pointer;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .nav-toggle:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }

        /* ===== 分类页 Banner ===== */
        .category-banner {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 80px;
            background: var(--bg);
            clip-path: ellipse(70% 100% at 50% 100%);
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .category-banner-content {
            max-width: 700px;
        }
        .category-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
        }
        .category-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .category-banner .breadcrumb a:hover {
            color: #fff;
        }
        .category-banner .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .category-banner h1 {
            color: #fff;
            font-size: 2.8rem;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .category-banner h1 i {
            color: var(--secondary-light);
            margin-right: 12px;
        }
        .category-banner p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            max-width: 560px;
            line-height: 1.8;
        }
        .category-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }
        .category-banner .banner-tags span {
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            border-radius: 50px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* ===== 分类介绍 ===== */
        .category-intro {
            padding: 60px 0 40px;
        }
        .category-intro .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .category-intro .intro-text h2 {
            margin-bottom: 20px;
            font-size: 1.8rem;
        }
        .category-intro .intro-text h2 span {
            color: var(--primary);
        }
        .category-intro .intro-text p {
            color: var(--text-light);
            margin-bottom: 16px;
            font-size: 1rem;
        }
        .category-intro .intro-text .feature-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 20px;
        }
        .category-intro .intro-text .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text);
            padding: 8px 12px;
            background: var(--primary-bg);
            border-radius: var(--radius-sm);
        }
        .category-intro .intro-text .feature-list li i {
            color: var(--primary);
            font-size: 0.9rem;
        }
        .category-intro .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .category-intro .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 280px;
            transition: var(--transition);
        }
        .category-intro .intro-image:hover img {
            transform: scale(1.03);
        }

        /* ===== 攻略卡片网格 ===== */
        .section-guides {
            padding: 60px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .section-header h2 span {
            color: var(--primary);
        }
        .section-header p {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 580px;
            margin: 0 auto;
        }
        .guides-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .guide-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--border-light);
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .guide-card:hover .card-img img {
            transform: scale(1.06);
        }
        .guide-card .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        }
        .guide-card .card-img .card-tag.hot {
            background: #e74c3c;
        }
        .guide-card .card-img .card-tag.new {
            background: var(--accent);
        }
        .guide-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-card .card-body p {
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
            font-size: 0.8rem;
            color: var(--text-lighter);
        }
        .guide-card .card-meta span i {
            margin-right: 4px;
        }
        .guide-card .card-meta a {
            color: var(--primary);
            font-weight: 500;
            font-size: 0.85rem;
        }
        .guide-card .card-meta a:hover {
            color: var(--primary-dark);
        }

        /* ===== 热门攻略排行 ===== */
        .section-popular {
            padding: 60px 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .section-popular::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.05;
            mix-blend-mode: overlay;
        }
        .section-popular .container {
            position: relative;
            z-index: 2;
        }
        .section-popular .section-header h2 {
            color: #fff;
        }
        .section-popular .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }
        .popular-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
        }
        .popular-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 18px 22px;
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
            cursor: default;
        }
        .popular-item:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateX(4px);
        }
        .popular-item .rank {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.95rem;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.10);
            color: rgba(255, 255, 255, 0.6);
        }
        .popular-item .rank.top {
            background: linear-gradient(135deg, #FDCB6E, #F39C12);
            color: #fff;
        }
        .popular-item .rank.top2 {
            background: linear-gradient(135deg, #dfe6e9, #b2bec3);
            color: #fff;
        }
        .popular-item .rank.top3 {
            background: linear-gradient(135deg, #E8A87C, #D35400);
            color: #fff;
        }
        .popular-item .info {
            flex: 1;
        }
        .popular-item .info h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .popular-item .info p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.8rem;
        }
        .popular-item .hot-badge {
            padding: 4px 12px;
            background: rgba(231, 76, 60, 0.2);
            color: #e74c3c;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            flex-shrink: 0;
        }

        /* ===== 分类标签云 ===== */
        .section-tags {
            padding: 50px 0 40px;
        }
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .tags-cloud a {
            padding: 8px 22px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 50px;
            font-size: 0.9rem;
            color: var(--text-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .tags-cloud a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(108, 92, 231, 0.25);
        }
        .tags-cloud a i {
            margin-right: 6px;
            font-size: 0.8rem;
        }

        /* ===== 攻略数据 ===== */
        .section-stats {
            padding: 50px 0;
            background: var(--bg);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stats-item {
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .stats-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stats-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stats-item .label {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-top: 8px;
        }
        .stats-item i {
            font-size: 1.6rem;
            color: var(--primary-light);
            margin-bottom: 12px;
        }

        /* ===== FAQ ===== */
        .section-faq {
            padding: 60px 0;
            background: var(--bg-card);
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-q {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: var(--transition);
        }
        .faq-item .faq-q i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-a {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* ===== CTA ===== */
        .section-cta {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .section-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .section-cta .container {
            position: relative;
            z-index: 2;
        }
        .section-cta h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .section-cta p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            max-width: 520px;
            margin: 0 auto 28px;
        }
        .section-cta .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            background: #fff;
            color: var(--primary);
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
            transition: var(--transition);
        }
        .section-cta .cta-btn:hover {
            transform: translateY(-4px) scale(1.02);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
            color: var(--primary-dark);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .logo span {
            background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.7));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-footer .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .site-footer .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (min-width: 992px) {
            .nav-search {
                display: block;
            }
        }
        @media (max-width: 991px) {
            .nav-search {
                display: none;
            }
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 8px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.10);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid var(--border);
                align-items: stretch;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-links li a {
                padding: 12px 16px;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }
            .category-banner h1 {
                font-size: 2rem;
            }
            .category-banner p {
                font-size: 1rem;
            }
            .category-intro .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .category-intro .intro-image {
                order: -1;
            }
            .guides-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .popular-list {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-top: 62px;
            }
            :root {
                --header-height: 62px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .category-banner {
                padding: 50px 0 50px;
                min-height: 240px;
            }
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .category-banner .banner-tags span {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .guides-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-intro .intro-text .feature-list {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stats-item .num {
                font-size: 1.8rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-cta h2 {
                font-size: 1.5rem;
            }
            .section-cta .cta-btn {
                padding: 14px 28px;
                font-size: 1rem;
            }
            .popular-item {
                padding: 14px 16px;
            }
            .popular-item .info h4 {
                font-size: 0.9rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .category-banner h1 {
                font-size: 1.3rem;
            }
            .category-banner p {
                font-size: 0.9rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stats-item {
                padding: 20px 12px;
            }
            .stats-item .num {
                font-size: 1.5rem;
            }
            .tags-cloud a {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .faq-item .faq-q {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-item .faq-a {
                font-size: 0.85rem;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .gap-1 {
            gap: 8px;
        }
        .gap-2 {
            gap: 16px;
        }
        .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;
        }