/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --primary: #7c3aed;
            --primary-light: #a78bfa;
            --primary-dark: #5b21b6;
            --accent: #06b6d4;
            --accent-light: #67e8f9;
            --accent-dark: #0891b2;
            --bg-dark: #0b0f1a;
            --bg-card: #131a2e;
            --bg-card-hover: #1a2340;
            --bg-elevated: #1c2546;
            --bg-nav: rgba(11, 15, 26, 0.85);
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: rgba(124, 58, 237, 0.2);
            --border-glow: rgba(6, 182, 212, 0.3);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 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-sans);
            background-color: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-light);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
            border-radius: 4px;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
        }

        p {
            color: var(--text-secondary);
        }

        /* ========== 容器 ========== */
        .container-custom {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ========== 浮动 Dock 导航 ========== */
        .navbar-dock {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1050;
            background: var(--bg-nav);
            backdrop-filter: blur(20px) saturate(1.6);
            -webkit-backdrop-filter: blur(20px) saturate(1.6);
            border: 1px solid rgba(124, 58, 237, 0.15);
            border-radius: var(--radius-xl);
            padding: 8px 20px;
            box-shadow: var(--shadow-md), var(--shadow-glow);
            width: auto;
            max-width: calc(100% - 32px);
            transition: var(--transition);
        }

        .navbar-dock .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: nowrap;
        }

        .navbar-dock .brand {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .navbar-dock .brand i {
            -webkit-text-fill-color: var(--accent);
            font-size: 1.4rem;
        }

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

        .navbar-dock .nav-links li a {
            display: block;
            padding: 8px 18px;
            border-radius: var(--radius-lg);
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .navbar-dock .nav-links li a:hover {
            color: var(--text-primary);
            background: rgba(124, 58, 237, 0.12);
        }
        .navbar-dock .nav-links li a.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--accent-dark));
            box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
        }
        .navbar-dock .nav-links li a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .navbar-dock .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .navbar-dock .nav-cta .search-toggle {
            background: transparent;
            border: none;
            color: var(--text-secondary);
            font-size: 1.1rem;
            padding: 8px 12px;
            border-radius: var(--radius-md);
            transition: var(--transition);
            cursor: pointer;
        }
        .navbar-dock .nav-cta .search-toggle:hover {
            color: var(--text-primary);
            background: rgba(124, 58, 237, 0.1);
        }

        .navbar-dock .nav-cta .btn-dock {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            padding: 8px 22px;
            border-radius: var(--radius-lg);
            font-weight: 600;
            font-size: 0.85rem;
            transition: var(--transition);
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(124, 58, 237, 0.25);
        }
        .navbar-dock .nav-cta .btn-dock:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 25px rgba(124, 58, 237, 0.35);
        }
        .navbar-dock .nav-cta .btn-dock:active {
            transform: translateY(0) scale(0.98);
        }

        /* 移动端菜单按钮 */
        .navbar-dock .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 4px 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .navbar-dock .mobile-toggle:hover {
            background: rgba(124, 58, 237, 0.1);
        }

        @media (max-width: 992px) {
            .navbar-dock {
                top: 12px;
                padding: 6px 16px;
                border-radius: var(--radius-lg);
            }
            .navbar-dock .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 12px);
                left: 0;
                right: 0;
                background: var(--bg-nav);
                backdrop-filter: blur(20px) saturate(1.6);
                -webkit-backdrop-filter: blur(20px) saturate(1.6);
                border-radius: var(--radius-md);
                border: 1px solid rgba(124, 58, 237, 0.15);
                padding: 12px;
                flex-direction: column;
                gap: 4px;
                box-shadow: var(--shadow-lg);
            }
            .navbar-dock .nav-links.show {
                display: flex;
            }
            .navbar-dock .nav-links li a {
                padding: 12px 20px;
                width: 100%;
                text-align: center;
            }
            .navbar-dock .mobile-toggle {
                display: block;
            }
            .navbar-dock .nav-cta .btn-dock {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .navbar-dock .nav-cta .search-toggle {
                padding: 6px 10px;
            }
        }

        @media (max-width: 576px) {
            .navbar-dock {
                top: 8px;
                padding: 4px 12px;
                border-radius: var(--radius-md);
                max-width: calc(100% - 16px);
            }
            .navbar-dock .brand {
                font-size: 1rem;
            }
            .navbar-dock .brand i {
                font-size: 1.1rem;
            }
            .navbar-dock .nav-cta .btn-dock {
                display: none;
            }
            .navbar-dock .nav-cta .search-toggle {
                font-size: 1rem;
                padding: 4px 8px;
            }
        }

        /* ========== Hero 首屏 ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 140px 24px 80px;
            background: linear-gradient(165deg, #0b0f1a 0%, #111827 40%, #1a1040 70%, #0b0f1a 100%);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -30%;
            left: -20%;
            width: 80%;
            height: 80%;
            background: radial-gradient(ellipse at center, rgba(124, 58, 237, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -20%;
            right: -10%;
            width: 60%;
            height: 60%;
            background: radial-gradient(ellipse at center, rgba(6, 182, 212, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-section .hero-bg-particles {
            position: absolute;
            inset: 0;
            overflow: hidden;
            pointer-events: none;
        }
        .hero-section .hero-bg-particles span {
            position: absolute;
            width: 4px;
            height: 4px;
            background: var(--primary-light);
            border-radius: 50%;
            opacity: 0.2;
            animation: float-particle 20s infinite linear;
        }
        .hero-section .hero-bg-particles span:nth-child(1) {
            top: 20%;
            left: 10%;
            animation-delay: 0s;
            animation-duration: 25s;
            width: 6px;
            height: 6px;
            opacity: 0.15;
        }
        .hero-section .hero-bg-particles span:nth-child(2) {
            top: 60%;
            left: 80%;
            animation-delay: 3s;
            animation-duration: 30s;
            width: 3px;
            height: 3px;
            background: var(--accent);
        }
        .hero-section .hero-bg-particles span:nth-child(3) {
            top: 40%;
            left: 50%;
            animation-delay: 6s;
            animation-duration: 22s;
            width: 5px;
            height: 5px;
            opacity: 0.1;
        }
        .hero-section .hero-bg-particles span:nth-child(4) {
            top: 75%;
            left: 25%;
            animation-delay: 9s;
            animation-duration: 28s;
            width: 4px;
            height: 4px;
            background: var(--accent-light);
        }
        .hero-section .hero-bg-particles span:nth-child(5) {
            top: 15%;
            left: 70%;
            animation-delay: 12s;
            animation-duration: 26s;
            width: 7px;
            height: 7px;
            opacity: 0.08;
        }

        @keyframes float-particle {
            0% {
                transform: translate(0, 0) scale(1);
                opacity: 0.15;
            }
            25% {
                transform: translate(30px, -40px) scale(1.2);
                opacity: 0.25;
            }
            50% {
                transform: translate(-20px, -80px) scale(0.8);
                opacity: 0.1;
            }
            75% {
                transform: translate(40px, -40px) scale(1.1);
                opacity: 0.2;
            }
            100% {
                transform: translate(0, 0) scale(1);
                opacity: 0.15;
            }
        }

        .hero-section .hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
        }

        .hero-section .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: var(--radius-xl);
            background: rgba(124, 58, 237, 0.15);
            border: 1px solid rgba(124, 58, 237, 0.25);
            color: var(--primary-light);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero-section .hero-title {
            font-size: clamp(2.6rem, 8vw, 4.8rem);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #f1f5f9 0%, #a78bfa 40%, #67e8f9 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-section .hero-subtitle {
            font-size: clamp(1.05rem, 2.5vw, 1.35rem);
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }

        .hero-section .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .hero-section .hero-actions .btn-hero-primary {
            padding: 14px 40px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: var(--transition);
            cursor: pointer;
            box-shadow: 0 8px 30px rgba(124, 58, 237, 0.25);
        }
        .hero-section .hero-actions .btn-hero-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(124, 58, 237, 0.35);
        }
        .hero-section .hero-actions .btn-hero-primary:active {
            transform: translateY(0);
        }

        .hero-section .hero-actions .btn-hero-secondary {
            padding: 14px 40px;
            border-radius: var(--radius-xl);
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid rgba(124, 58, 237, 0.3);
            transition: var(--transition);
            cursor: pointer;
            backdrop-filter: blur(4px);
        }
        .hero-section .hero-actions .btn-hero-secondary:hover {
            background: rgba(124, 58, 237, 0.1);
            border-color: var(--primary-light);
        }

        .hero-section .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: center;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid rgba(124, 58, 237, 0.1);
        }
        .hero-section .hero-stats .stat-item {
            text-align: center;
        }
        .hero-section .hero-stats .stat-item .stat-number {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: block;
        }
        .hero-section .hero-stats .stat-item .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 120px 16px 60px;
                min-height: 90vh;
            }
            .hero-section .hero-stats {
                gap: 20px;
                padding-top: 28px;
                margin-top: 40px;
            }
            .hero-section .hero-stats .stat-item .stat-number {
                font-size: 1.6rem;
            }
        }

        /* ========== 通用板块 ========== */
        .section-block {
            padding: 80px 0;
        }
        .section-block .section-label {
            display: inline-block;
            padding: 4px 16px;
            border-radius: var(--radius-xl);
            background: rgba(124, 58, 237, 0.1);
            border: 1px solid rgba(124, 58, 237, 0.15);
            color: var(--primary-light);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .section-block .section-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .section-block .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 48px;
        }
        .section-block .section-desc.text-center {
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            .section-block {
                padding: 56px 0;
            }
            .section-block .section-desc {
                margin-bottom: 32px;
            }
        }

        /* ========== 特色卡片 ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            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(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            border-color: rgba(124, 58, 237, 0.3);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.15), rgba(6, 182, 212, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent);
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.25), rgba(6, 182, 212, 0.2));
            transform: scale(1.05);
        }
        .feature-card .feature-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-card .feature-desc {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== 分类入口 ========== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }

        .category-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 40px 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .category-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            right: 0;
            width: 120px;
            height: 120px;
            background: radial-gradient(circle at bottom right, rgba(124, 58, 237, 0.08), transparent 70%);
            pointer-events: none;
        }
        .category-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            border-color: rgba(124, 58, 237, 0.3);
        }
        .category-card .category-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: var(--radius-xl);
            background: rgba(6, 182, 212, 0.12);
            color: var(--accent-light);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 16px;
            align-self: flex-start;
        }
        .category-card .category-title {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .category-card .category-desc {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 24px;
            flex: 1;
        }
        .category-card .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            align-self: flex-start;
            border: none;
            cursor: pointer;
        }
        .category-card .category-link:hover {
            transform: translateX(4px);
            box-shadow: 0 8px 25px rgba(124, 58, 237, 0.3);
            color: #fff;
        }
        .category-card .category-link i {
            transition: var(--transition);
        }
        .category-card .category-link:hover i {
            transform: translateX(4px);
        }

        /* ========== 资讯列表 (CMS) ========== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm), var(--shadow-glow);
            border-color: rgba(124, 58, 237, 0.25);
        }
        .news-card .news-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            margin-bottom: 12px;
        }
        .news-card .news-meta .news-category {
            display: inline-block;
            padding: 2px 12px;
            border-radius: var(--radius-xl);
            background: rgba(124, 58, 237, 0.12);
            color: var(--primary-light);
            font-size: 0.75rem;
            font-weight: 600;
        }
        .news-card .news-meta .news-date {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .news-card .news-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-title a {
            color: var(--text-primary);
            transition: var(--transition);
        }
        .news-card .news-title a:hover {
            color: var(--accent);
        }
        .news-card .news-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
            margin-bottom: 16px;
        }
        .news-card .news-readmore {
            color: var(--accent);
            font-weight: 600;
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
            align-self: flex-start;
        }
        .news-card .news-readmore:hover {
            color: var(--accent-light);
            gap: 10px;
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            font-size: 1rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }

        /* ========== 数据/流程 ========== */
        .process-section {
            background: linear-gradient(165deg, #0f1525, #131a2e);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            counter-reset: step-counter;
        }

        .process-step {
            text-align: center;
            position: relative;
            padding: 32px 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .process-step:hover {
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .process-step .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin: 0 auto 20px;
            box-shadow: 0 8px 24px rgba(124, 58, 237, 0.2);
        }
        .process-step .step-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step .step-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ========== 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: rgba(124, 58, 237, 0.25);
        }
        .faq-item .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-item .faq-question:hover {
            color: var(--accent);
        }
        .faq-item .faq-question:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: -2px;
        }
        .faq-item .faq-question i {
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-item .faq-answer.open {
            display: block;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.08), rgba(6, 182, 212, 0.05));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .cta-box {
            background: linear-gradient(145deg, var(--bg-card), var(--bg-elevated));
            border: 1px solid rgba(124, 58, 237, 0.2);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            box-shadow: var(--shadow-glow);
        }
        .cta-box .cta-title {
            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-box .cta-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-box .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .cta-box .cta-actions .btn-cta-primary {
            padding: 14px 40px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: var(--transition);
            cursor: pointer;
            box-shadow: 0 8px 30px rgba(124, 58, 237, 0.2);
        }
        .cta-box .cta-actions .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(124, 58, 237, 0.3);
        }
        .cta-box .cta-actions .btn-cta-secondary {
            padding: 14px 40px;
            border-radius: var(--radius-xl);
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid rgba(124, 58, 237, 0.25);
            transition: var(--transition);
            cursor: pointer;
        }
        .cta-box .cta-actions .btn-cta-secondary:hover {
            background: rgba(124, 58, 237, 0.08);
            border-color: var(--primary-light);
        }

        @media (max-width: 768px) {
            .cta-box {
                padding: 40px 24px;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid rgba(124, 58, 237, 0.1);
            padding: 48px 0 24px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
            display: inline-block;
        }
        .site-footer .footer-brand .footer-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            max-width: 300px;
            line-height: 1.7;
        }
        .site-footer .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(124, 58, 237, 0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .site-footer .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
        }
        .site-footer .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
        }
        .site-footer .footer-bottom .footer-links a {
            font-size: 0.82rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .site-footer .footer-bottom .footer-links a:hover {
            color: var(--accent);
        }

        @media (max-width: 992px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 576px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== 搜索框 (导航附属) ========== */
        .search-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(8px);
            z-index: 1090;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 24px;
        }
        .search-overlay.open {
            display: flex;
        }
        .search-overlay .search-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            max-width: 560px;
            width: 100%;
            box-shadow: var(--shadow-lg);
        }
        .search-overlay .search-panel .search-input-group {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .search-overlay .search-panel .search-input-group input {
            flex: 1;
            padding: 14px 20px;
            border-radius: var(--radius-md);
            background: var(--bg-elevated);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-overlay .search-panel .search-input-group input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
        }
        .search-overlay .search-panel .search-input-group input::placeholder {
            color: var(--text-muted);
        }
        .search-overlay .search-panel .search-input-group .btn-search-close {
            background: transparent;
            border: none;
            color: var(--text-muted);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            transition: var(--transition);
        }
        .search-overlay .search-panel .search-input-group .btn-search-close:hover {
            color: var(--text-primary);
        }
        .search-overlay .search-panel .search-hints {
            margin-top: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .search-overlay .search-panel .search-hints span {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .search-overlay .search-panel .search-hints a {
            font-size: 0.78rem;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            background: rgba(124, 58, 237, 0.08);
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .search-overlay .search-panel .search-hints a:hover {
            background: rgba(124, 58, 237, 0.15);
            color: var(--text-primary);
        }

        /* ========== 工具类 ========== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .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;
        }
        .mt-5 {
            margin-top: 48px;
        }
        .mb-1 {
            margin-bottom: 8px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .mb-4 {
            margin-bottom: 32px;
        }
        .mb-5 {
            margin-bottom: 48px;
        }

        /* ========== 响应式微调 ========== */
        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .categories-grid {
                grid-template-columns: 1fr;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .process-step {
                padding: 24px 12px;
            }
            .process-step .step-number {
                width: 44px;
                height: 44px;
                font-size: 1rem;
            }
        }

        @media (max-width: 480px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
            .hero-section .hero-actions .btn-hero-primary,
            .hero-section .hero-actions .btn-hero-secondary {
                width: 100%;
                text-align: center;
            }
            .cta-box .cta-actions .btn-cta-primary,
            .cta-box .cta-actions .btn-cta-secondary {
                width: 100%;
                text-align: center;
            }
        }

        /* ========== 滚动条美化 ========== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(124, 58, 237, 0.3);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(124, 58, 237, 0.5);
        }

/* roulang page: category1 */
:root {
            --primary: #6c3bf1;
            --primary-dark: #5228c9;
            --primary-light: #8b5cf6;
            --primary-glow: rgba(108, 59, 241, 0.35);
            --secondary: #f43f5e;
            --secondary-glow: rgba(244, 63, 94, 0.3);
            --accent: #06b6d4;
            --accent-glow: rgba(6, 182, 212, 0.25);
            --bg-dark: #0c0a1e;
            --bg-card: #13102e;
            --bg-card-hover: #1a163a;
            --bg-surface: #1e1a3e;
            --text-primary: #f1f0ff;
            --text-secondary: #b0acc8;
            --text-muted: #7a77a0;
            --border-subtle: rgba(108, 59, 241, 0.15);
            --border-glow: rgba(108, 59, 241, 0.3);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 40px rgba(108, 59, 241, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        *,
        *::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);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #a78bfa;
        }
        a:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

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

        button {
            cursor: pointer;
        }
        button:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 3px;
            border-radius: 6px;
        }

        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        ::selection {
            background: var(--primary);
            color: #fff;
        }

        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-glow);
            border-radius: 20px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary);
        }

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

        @media (max-width:768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== NAV DOCK ===== */
        .navbar-dock {
            position: fixed;
            top: 18px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1050;
            width: calc(100% - 40px);
            max-width: 1100px;
            background: rgba(12, 10, 30, 0.78);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border: 1px solid var(--border-subtle);
            border-radius: 60px;
            padding: 6px 24px;
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.6), 0 0 60px rgba(108, 59, 241, 0.06);
            transition: var(--transition);
        }

        .navbar-dock:hover {
            border-color: rgba(108, 59, 241, 0.25);
            box-shadow: 0 16px 56px rgba(0, 0, 0, 0.7), 0 0 80px rgba(108, 59, 241, 0.08);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            height: 54px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            padding: 4px 0;
            flex-shrink: 0;
        }
        .brand i {
            font-size: 1.5rem;
            color: var(--primary-light);
            filter: drop-shadow(0 0 12px var(--primary-glow));
        }
        .brand span {
            background: linear-gradient(135deg, #f1f0ff 0%, #a78bfa 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .brand:hover {
            opacity: 0.92;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .nav-links li a {
            display: block;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            letter-spacing: 0.2px;
            position: relative;
            white-space: nowrap;
        }
        .nav-links li a:hover {
            color: var(--text-primary);
            background: rgba(108, 59, 241, 0.10);
        }
        .nav-links li a.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            box-shadow: 0 4px 20px var(--primary-glow);
        }
        .nav-links li a.active:hover {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
        }

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

        .search-toggle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: var(--transition);
            font-size: 1rem;
            background: transparent;
            border: 1px solid transparent;
        }
        .search-toggle:hover {
            background: rgba(108, 59, 241, 0.10);
            color: var(--text-primary);
            border-color: var(--border-subtle);
        }

        .btn-dock {
            padding: 8px 26px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            border: none;
            box-shadow: 0 4px 24px var(--primary-glow);
            transition: var(--transition);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .btn-dock:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 36px var(--primary-glow);
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
            color: #fff;
        }
        .btn-dock:active {
            transform: scale(0.96);
        }

        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 1.2rem;
            background: transparent;
            border: 1px solid var(--border-subtle);
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: rgba(108, 59, 241, 0.10);
            color: var(--text-primary);
        }

        @media (max-width:820px) {
            .navbar-dock {
                top: 12px;
                width: calc(100% - 24px);
                padding: 4px 16px;
                border-radius: 40px;
            }
            .nav-container {
                height: 48px;
            }
            .brand {
                font-size: 1.1rem;
            }
            .brand i {
                font-size: 1.2rem;
            }
            .nav-links {
                position: fixed;
                top: 72px;
                left: 12px;
                right: 12px;
                background: rgba(12, 10, 30, 0.96);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                border: 1px solid var(--border-subtle);
                border-radius: 24px;
                flex-direction: column;
                padding: 12px 8px;
                gap: 4px;
                box-shadow: 0 24px 64px rgba(0, 0, 0, 0.7);
                display: none;
                z-index: 1060;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 12px 20px;
                width: 100%;
                text-align: center;
                font-size: 1rem;
                border-radius: 16px;
            }
            .mobile-toggle {
                display: flex;
            }
            .btn-dock {
                padding: 6px 18px;
                font-size: 0.82rem;
            }
            .search-toggle {
                width: 36px;
                height: 36px;
                font-size: 0.9rem;
            }
        }

        @media (max-width:480px) {
            .navbar-dock {
                top: 8px;
                width: calc(100% - 16px);
                padding: 2px 12px;
                border-radius: 32px;
            }
            .nav-container {
                height: 44px;
                gap: 6px;
            }
            .brand {
                font-size: 0.95rem;
                gap: 6px;
            }
            .brand i {
                font-size: 1rem;
            }
            .btn-dock {
                padding: 4px 14px;
                font-size: 0.75rem;
            }
            .search-toggle {
                width: 32px;
                height: 32px;
                font-size: 0.8rem;
            }
            .mobile-toggle {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
            .nav-links {
                top: 60px;
                left: 8px;
                right: 8px;
                border-radius: 18px;
                padding: 8px 4px;
            }
            .nav-links li a {
                padding: 10px 14px;
                font-size: 0.9rem;
                border-radius: 12px;
            }
        }

        /* ===== PAGE HEADER ===== */
        .page-header {
            padding-top: 120px;
            padding-bottom: 50px;
            text-align: center;
            position: relative;
            background: radial-gradient(ellipse at 30% 20%, rgba(108, 59, 241, 0.10) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 40%, rgba(244, 63, 94, 0.06) 0%, transparent 50%);
        }
        .page-header h1 {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.2;
            background: linear-gradient(135deg, #f1f0ff 0%, #a78bfa 60%, #c084fc 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 16px;
        }
        .page-header p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .page-header .breadcrumb-custom {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .page-header .breadcrumb-custom a {
            color: var(--text-secondary);
        }
        .page-header .breadcrumb-custom a:hover {
            color: var(--primary-light);
        }
        .page-header .breadcrumb-custom span {
            color: var(--text-muted);
        }
        .page-header .breadcrumb-custom .current {
            color: var(--primary-light);
        }

        @media (max-width:768px) {
            .page-header {
                padding-top: 100px;
                padding-bottom: 36px;
            }
            .page-header h1 {
                font-size: 2.2rem;
            }
            .page-header p {
                font-size: 1rem;
                padding: 0 8px;
            }
        }
        @media (max-width:480px) {
            .page-header h1 {
                font-size: 1.7rem;
            }
            .page-header p {
                font-size: 0.92rem;
            }
        }

        /* ===== SECTION COMMON ===== */
        .section-block {
            padding: 70px 0;
            position: relative;
        }
        .section-block .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            color: var(--text-primary);
            text-align: center;
        }
        .section-block .section-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 44px;
            line-height: 1.7;
        }
        .section-block .section-sub strong {
            color: var(--primary-light);
        }

        @media (max-width:768px) {
            .section-block {
                padding: 48px 0;
            }
            .section-block .section-title {
                font-size: 1.7rem;
            }
            .section-block .section-sub {
                font-size: 0.95rem;
                margin-bottom: 32px;
                padding: 0 8px;
            }
        }
        @media (max-width:480px) {
            .section-block .section-title {
                font-size: 1.4rem;
            }
        }

        /* ===== CATEGORY GRID ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .cat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 20px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .cat-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);
        }
        .cat-card:hover::before {
            opacity: 1;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .cat-card .cat-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(108, 59, 241, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.6rem;
            color: var(--primary-light);
            transition: var(--transition);
        }
        .cat-card:hover .cat-icon {
            background: rgba(108, 59, 241, 0.22);
            transform: scale(1.06);
        }
        .cat-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .cat-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .cat-card .badge-count {
            display: inline-block;
            margin-top: 12px;
            padding: 3px 16px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(108, 59, 241, 0.12);
            color: var(--primary-light);
            letter-spacing: 0.3px;
            border: 1px solid var(--border-subtle);
        }

        @media (max-width:992px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }
        @media (max-width:480px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cat-card {
                padding: 20px 16px 18px;
            }
        }

        /* ===== FEATURED CARD ===== */
        .featured-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .featured-card:hover {
            transform: translateY(-5px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .featured-card .fc-img {
            height: 190px;
            background: linear-gradient(135deg, rgba(108, 59, 241, 0.15), rgba(6, 182, 212, 0.08));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.8rem;
            color: var(--primary-light);
            position: relative;
            border-bottom: 1px solid var(--border-subtle);
        }
        .featured-card .fc-img .fc-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.7rem;
            font-weight: 600;
            background: var(--secondary);
            color: #fff;
            letter-spacing: 0.3px;
            box-shadow: 0 4px 16px var(--secondary-glow);
        }
        .featured-card .fc-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .featured-card .fc-body .fc-meta {
            display: flex;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .featured-card .fc-body .fc-meta span i {
            margin-right: 4px;
        }
        .featured-card .fc-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .featured-card .fc-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
            flex: 1;
            margin-bottom: 16px;
        }
        .featured-card .fc-body .fc-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary-light);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .featured-card .fc-body .fc-link i {
            font-size: 0.75rem;
            transition: var(--transition);
        }
        .featured-card .fc-body .fc-link:hover {
            color: #a78bfa;
            gap: 10px;
        }

        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width:992px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width:600px) {
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .featured-card .fc-img {
                height: 160px;
            }
        }

        /* ===== TIMELINE ===== */
        .timeline-wrap {
            position: relative;
            padding-left: 36px;
            max-width: 800px;
            margin: 0 auto;
        }
        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--secondary), var(--accent));
            border-radius: 4px;
            opacity: 0.5;
        }
        .tl-item {
            position: relative;
            margin-bottom: 32px;
            padding-left: 20px;
        }
        .tl-item:last-child {
            margin-bottom: 0;
        }
        .tl-item .tl-dot {
            position: absolute;
            left: -29px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg-dark);
            box-shadow: 0 0 0 3px var(--primary-glow);
        }
        .tl-item:nth-child(2) .tl-dot {
            background: var(--secondary);
            box-shadow: 0 0 0 3px var(--secondary-glow);
        }
        .tl-item:nth-child(3) .tl-dot {
            background: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-glow);
        }
        .tl-item .tl-date {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary-light);
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }
        .tl-item .tl-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .tl-item .tl-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }
        @media (max-width:600px) {
            .timeline-wrap {
                padding-left: 28px;
            }
            .tl-item {
                padding-left: 14px;
            }
            .tl-item .tl-dot {
                left: -22px;
                width: 12px;
                height: 12px;
            }
            .tl-item .tl-title {
                font-size: 1rem;
            }
        }

        /* ===== STATS ROW ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 16px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }
        .stat-item .stat-num {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f1f0ff, #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        @media (max-width:768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-item .stat-num {
                font-size: 2rem;
            }
        }
        @media (max-width:480px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-num {
                font-size: 1.7rem;
            }
        }

        /* ===== FAQ ===== */
        .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-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-item .faq-q {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-q i {
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 0.85rem;
        }
        .faq-item .faq-q:hover {
            background: rgba(108, 59, 241, 0.04);
        }
        .faq-item .faq-q.open i {
            transform: rotate(180deg);
            color: var(--primary-light);
        }
        .faq-item .faq-a {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item .faq-a.open {
            display: block;
        }
        @media (max-width:600px) {
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-item .faq-a {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: radial-gradient(ellipse at 50% 40%, rgba(108, 59, 241, 0.10) 0%, transparent 70%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            text-align: center;
            padding: 70px 0;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 540px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-section .btn-cta {
            display: inline-block;
            padding: 16px 48px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1.05rem;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            border: none;
            box-shadow: 0 8px 40px var(--primary-glow);
            transition: var(--transition);
            letter-spacing: 0.5px;
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-4px) scale(1.02);
            box-shadow: 0 14px 56px var(--primary-glow);
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
            color: #fff;
        }
        .cta-section .btn-cta:active {
            transform: scale(0.97);
        }
        .cta-section .cta-note {
            margin-top: 18px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        @media (max-width:768px) {
            .cta-section {
                padding: 50px 0;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .cta-section p {
                font-size: 0.95rem;
                padding: 0 8px;
            }
            .cta-section .btn-cta {
                padding: 14px 36px;
                font-size: 0.95rem;
            }
        }
        @media (max-width:480px) {
            .cta-section h2 {
                font-size: 1.4rem;
            }
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #0a081a;
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }
        .footer-brand .footer-logo i {
            color: var(--primary-light);
        }
        .footer-brand .footer-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom .footer-links a {
            font-size: 0.82rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-bottom .footer-links a:hover {
            color: var(--primary-light);
        }

        @media (max-width:992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .footer-brand .footer-desc {
                max-width: 100%;
            }
        }
        @media (max-width:600px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                text-align: center;
            }
            .footer-brand .footer-logo {
                justify-content: center;
            }
            .footer-brand .footer-desc {
                margin: 0 auto;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom .footer-links {
                justify-content: center;
                gap: 14px;
                flex-wrap: wrap;
            }
        }

        /* ===== MISC ===== */
        .bg-glow-1 {
            background: radial-gradient(ellipse at 20% 50%, rgba(108, 59, 241, 0.04) 0%, transparent 60%);
        }
        .bg-glow-2 {
            background: radial-gradient(ellipse at 80% 30%, rgba(244, 63, 94, 0.03) 0%, transparent 60%);
        }
        .divider-glow {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
            margin: 0;
            border: none;
            opacity: 0.5;
        }

        .tag-sm {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 30px;
            font-size: 0.7rem;
            font-weight: 600;
            background: rgba(108, 59, 241, 0.08);
            color: var(--primary-light);
            border: 1px solid var(--border-subtle);
            letter-spacing: 0.2px;
        }

        .btn-outline-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary-light);
            border: 1px solid var(--border-glow);
            background: transparent;
            transition: var(--transition);
        }
        .btn-outline-primary-custom:hover {
            background: rgba(108, 59, 241, 0.10);
            border-color: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px var(--primary-glow);
        }

        .text-gradient {
            background: linear-gradient(135deg, #f1f0ff, #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        @media (max-width:768px) {
            .section-block .section-sub br {
                display: none;
            }
        }

/* roulang page: article */
:root {
            --primary: #00d4ff;
            --primary-dark: #0099cc;
            --primary-glow: rgba(0, 212, 255, 0.25);
            --secondary: #7c3aed;
            --secondary-light: #a855f7;
            --accent: #f59e0b;
            --bg-dark: #0a0e1a;
            --bg-card: #111827;
            --bg-elevated: #1a1f2e;
            --bg-nav: rgba(10, 14, 26, 0.85);
            --text-primary: #ffffff;
            --text-secondary: #e5e7eb;
            --text-muted: #9ca3af;
            --border-color: rgba(0, 212, 255, 0.15);
            --border-glow: rgba(0, 212, 255, 0.3);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(0, 212, 255, 0.06);
            --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.08);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-secondary);
            line-height: 1.7;
            overflow-x: hidden;
            padding-top: 90px;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) { .container-custom { padding: 0 16px; } }

        /* ===== Navigation Dock ===== */
        .navbar-dock {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 40px);
            max-width: 1100px;
            z-index: 1050;
            background: var(--bg-nav);
            backdrop-filter: blur(20px) saturate(1.6);
            -webkit-backdrop-filter: blur(20px) saturate(1.6);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-color);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0, 212, 255, 0.05);
            padding: 0 20px;
            transition: var(--transition);
        }
        .navbar-dock .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }
        .navbar-dock .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }
        .navbar-dock .brand i { color: var(--primary); font-size: 1.5rem; filter: drop-shadow(0 0 8px var(--primary-glow)); }
        .navbar-dock .brand span { background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .navbar-dock .nav-links { display: flex; list-style: none; gap: 8px; margin: 0; padding: 0; }
        .navbar-dock .nav-links li a {
            display: block;
            padding: 8px 18px;
            border-radius: var(--radius-lg);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }
        .navbar-dock .nav-links li a:hover { color: var(--text-primary); background: rgba(0, 212, 255, 0.08); }
        .navbar-dock .nav-links li a.active { color: var(--text-primary); background: rgba(0, 212, 255, 0.12); box-shadow: 0 0 20px rgba(0, 212, 255, 0.06); }
        .navbar-dock .nav-links li a.active::after { content: ''; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%); width: 20px; height: 2px; background: var(--primary); border-radius: 4px; box-shadow: 0 0 12px var(--primary-glow); }
        .navbar-dock .nav-cta { display: flex; align-items: center; gap: 12px; }
        .navbar-dock .search-toggle { background: none; border: none; color: var(--text-muted); font-size: 1.1rem; padding: 8px 10px; border-radius: 50%; transition: var(--transition); cursor: pointer; }
        .navbar-dock .search-toggle:hover { color: var(--primary); background: rgba(0, 212, 255, 0.08); }
        .btn-dock {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            border: none;
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-lg);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
        }
        .btn-dock:hover { transform: translateY(-2px); box-shadow: 0 0 35px rgba(0, 212, 255, 0.3); color: #fff; }
        .mobile-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.4rem; padding: 8px; border-radius: 8px; cursor: pointer; transition: var(--transition); }
        .mobile-toggle:hover { background: rgba(255,255,255,0.05); }
        @media (max-width: 820px) {
            .navbar-dock .nav-links { display: none; flex-direction: column; position: absolute; top: 72px; left: 12px; right: 12px; background: var(--bg-elevated); border-radius: var(--radius-md); border: 1px solid var(--border-color); padding: 12px; gap: 4px; box-shadow: 0 20px 60px rgba(0,0,0,0.6); }
            .navbar-dock .nav-links.open { display: flex; }
            .navbar-dock .nav-links li a { padding: 12px 16px; border-radius: var(--radius-sm); }
            .navbar-dock .nav-links li a.active::after { display: none; }
            .mobile-toggle { display: block; }
            .navbar-dock .nav-cta .btn-dock { display: none; }
        }
        @media (max-width: 480px) {
            .navbar-dock { top: 12px; width: calc(100% - 24px); padding: 0 14px; }
            .navbar-dock .nav-container { height: 56px; }
            .navbar-dock .brand { font-size: 1.1rem; gap: 6px; }
            .navbar-dock .brand i { font-size: 1.2rem; }
        }

        /* ===== Article Hero ===== */
        .article-hero {
            padding: 40px 0 20px;
            position: relative;
        }
        .article-hero .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            list-style: none;
            padding: 0;
        }
        .article-hero .breadcrumb-custom li + li::before { content: '›'; margin-right: 12px; color: var(--text-muted); opacity: 0.5; }
        .article-hero .breadcrumb-custom a { color: var(--text-muted); }
        .article-hero .breadcrumb-custom a:hover { color: var(--primary); }
        .article-hero .breadcrumb-custom .current { color: var(--text-secondary); }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
        }
        .article-hero .meta-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            align-items: center;
            font-size: 0.92rem;
            color: var(--text-muted);
        }
        .article-hero .meta-bar .badge-cat {
            display: inline-block;
            background: rgba(0, 212, 255, 0.12);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: var(--radius-lg);
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid rgba(0, 212, 255, 0.15);
        }
        .article-hero .meta-bar .meta-item i { margin-right: 6px; opacity: 0.7; }
        @media (max-width: 768px) {
            .article-hero h1 { font-size: 1.7rem; }
            .article-hero .meta-bar { gap: 10px 18px; font-size: 0.82rem; }
        }
        @media (max-width: 480px) {
            .article-hero h1 { font-size: 1.4rem; }
            .article-hero { padding: 20px 0 10px; }
        }

        /* ===== Article Body ===== */
        .article-body-wrap {
            padding: 10px 0 40px;
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 48px 52px;
            box-shadow: var(--shadow-card);
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-content h2, .article-content h3, .article-content h4 {
            color: var(--text-primary);
            font-weight: 700;
            margin-top: 36px;
            margin-bottom: 16px;
        }
        .article-content h2 { font-size: 1.6rem; }
        .article-content h3 { font-size: 1.3rem; }
        .article-content p { margin-bottom: 18px; }
        .article-content ul, .article-content ol { margin-bottom: 18px; padding-left: 24px; }
        .article-content li { margin-bottom: 8px; }
        .article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
        .article-content a:hover { color: var(--primary-dark); }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(0, 212, 255, 0.04);
            padding: 20px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-content img { border-radius: var(--radius-md); margin: 24px 0; box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
        .article-content .content-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
        }
        .article-content .content-empty i { font-size: 3rem; color: var(--primary); opacity: 0.3; margin-bottom: 20px; display: block; }
        .article-content .content-empty a { display: inline-block; margin-top: 16px; padding: 10px 28px; background: var(--primary); color: #000; border-radius: var(--radius-lg); font-weight: 600; text-decoration: none; }
        .article-content .content-empty a:hover { background: var(--primary-dark); color: #000; }
        @media (max-width: 768px) {
            .article-content { padding: 28px 20px; font-size: 0.98rem; }
            .article-content h2 { font-size: 1.3rem; }
            .article-content h3 { font-size: 1.1rem; }
        }
        @media (max-width: 480px) {
            .article-content { padding: 20px 14px; font-size: 0.92rem; border-radius: var(--radius-md); }
        }

        /* ===== Tags & Share ===== */
        .article-tags-wrap {
            padding: 24px 0 8px;
            border-top: 1px solid rgba(255,255,255,0.06);
            margin-top: 32px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .article-tags-wrap .tags-list { display: flex; flex-wrap: wrap; gap: 8px; }
        .article-tags-wrap .tags-list .tag-item {
            display: inline-block;
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            padding: 4px 14px;
            border-radius: var(--radius-lg);
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .article-tags-wrap .tags-list .tag-item:hover { border-color: var(--primary); color: var(--primary); background: rgba(0,212,255,0.06); }
        .article-tags-wrap .share-links { display: flex; gap: 10px; align-items: center; }
        .article-tags-wrap .share-links span { font-size: 0.85rem; color: var(--text-muted); }
        .article-tags-wrap .share-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .article-tags-wrap .share-links a:hover { background: var(--primary); color: #000; border-color: var(--primary); }
        @media (max-width: 480px) {
            .article-tags-wrap { flex-direction: column; align-items: flex-start; }
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 50px 0 20px;
        }
        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 28px;
            letter-spacing: -0.3px;
        }
        .related-section .section-title i { color: var(--primary); margin-right: 10px; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 24px;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(0,0,0,0.2);
        }
        .related-card:hover { transform: translateY(-4px); border-color: var(--border-glow); box-shadow: var(--shadow-card), var(--shadow-glow); }
        .related-card .rc-cat {
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
            display: block;
        }
        .related-card .rc-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .rc-title a { color: inherit; }
        .related-card .rc-title a:hover { color: var(--primary); }
        .related-card .rc-meta { font-size: 0.8rem; color: var(--text-muted); }
        .related-card .rc-meta i { margin-right: 4px; opacity: 0.6; }
        .related-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed rgba(255,255,255,0.08);
        }
        @media (max-width: 992px) { .related-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .related-grid { grid-template-columns: 1fr; } .related-section .section-title { font-size: 1.3rem; } }

        /* ===== CTA ===== */
        .cta-section {
            padding: 50px 0 60px;
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.06) 0%, rgba(124, 58, 237, 0.06) 100%);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 52px 48px;
            text-align: center;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 40%, rgba(0,212,255,0.03) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-box h3 { font-size: 1.8rem; font-weight: 700; color: var(--text-primary); margin-bottom: 12px; }
        .cta-box p { font-size: 1.05rem; color: var(--text-muted); max-width: 560px; margin: 0 auto 24px; }
        .cta-box .btn-cta {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: #fff;
            padding: 14px 40px;
            border-radius: var(--radius-xl);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 30px rgba(0, 212, 255, 0.15);
        }
        .cta-box .btn-cta:hover { transform: translateY(-3px); box-shadow: 0 0 50px rgba(0, 212, 255, 0.3); color: #fff; }
        .cta-box .btn-cta i { margin-right: 8px; }
        @media (max-width: 768px) {
            .cta-box { padding: 36px 24px; }
            .cta-box h3 { font-size: 1.4rem; }
            .cta-box p { font-size: 0.95rem; }
            .cta-box .btn-cta { padding: 12px 32px; font-size: 0.95rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 52px 0 0;
            margin-top: 20px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
        }
        .site-footer .footer-logo { font-size: 1.3rem; font-weight: 700; color: var(--text-primary); display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
        .site-footer .footer-logo i { color: var(--primary); }
        .site-footer .footer-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; max-width: 320px; }
        .site-footer .footer-col h5 { font-size: 0.95rem; font-weight: 600; color: var(--text-primary); margin-bottom: 16px; letter-spacing: 0.3px; }
        .site-footer .footer-col ul { list-style: none; padding: 0; margin: 0; }
        .site-footer .footer-col ul li { margin-bottom: 10px; }
        .site-footer .footer-col ul li a { font-size: 0.88rem; color: var(--text-muted); transition: var(--transition); }
        .site-footer .footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.05);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .site-footer .footer-bottom .footer-links { display: flex; gap: 20px; }
        .site-footer .footer-bottom .footer-links a { color: var(--text-muted); font-size: 0.82rem; }
        .site-footer .footer-bottom .footer-links a:hover { color: var(--primary); }
        @media (max-width: 868px) {
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
            .site-footer .footer-bottom .footer-links { justify-content: center; gap: 14px; }
            .site-footer { padding: 36px 0 0; }
        }

        /* ===== Extra Utilities ===== */
        .text-glow { text-shadow: 0 0 20px rgba(0,212,255,0.15); }
        .divider-gradient { height: 2px; background: linear-gradient(90deg, transparent, var(--primary), transparent); width: 80px; margin: 20px 0; opacity: 0.4; border-radius: 4px; }
        .back-home-link { display: inline-flex; align-items: center; gap: 8px; color: var(--text-muted); font-size: 0.9rem; margin-top: 20px; transition: var(--transition); }
        .back-home-link:hover { color: var(--primary); }
        .back-home-link i { transition: var(--transition); }
        .back-home-link:hover i { transform: translateX(-4px); }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-dark); }
        ::-webkit-scrollbar-thumb { background: rgba(0,212,255,0.2); border-radius: 6px; }
        ::-webkit-scrollbar-thumb:hover { background: rgba(0,212,255,0.35); }

/* roulang page: category2 */
/*----------------------------------------
          1. 设计变量
        ----------------------------------------*/
        :root {
            /* 主辅色 - 深空霓虹 */
            --primary: #6c3bff;
            --primary-light: #8b5cf6;
            --primary-dark: #4f2bb3;
            --secondary: #00d4ff;
            --secondary-light: #66e5ff;
            --accent: #ff2d7b;
            --accent-light: #ff6b9d;

            /* 背景 */
            --bg-deep: #0a0a1a;
            --bg-card: #12122a;
            --bg-card-hover: #1a1a3a;
            --bg-surface: #18183a;
            --bg-elevated: #20204a;

            /* 文字 */
            --text-white: #ffffff;
            --text-light: #e8e8f0;
            --text-muted: #9a9abf;
            --text-dim: #6a6a8a;

            /* 边框 & 分割 */
            --border-glow: rgba(108, 59, 255, 0.25);
            --border-subtle: rgba(255, 255, 255, 0.06);
            --divider: rgba(255, 255, 255, 0.05);

            /* 圆角 */
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;

            /* 阴影 */
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 30px rgba(108, 59, 255, 0.15);
            --shadow-hover: 0 16px 48px rgba(108, 59, 255, 0.25);

            /* 间距 */
            --space-xs: 6px;
            --space-sm: 12px;
            --space-md: 24px;
            --space-lg: 48px;
            --space-xl: 80px;

            /* 字体 */
            --font-base: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --font-display: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;

            /* 过渡 */
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /*----------------------------------------
          2. 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-base);
            font-size: 16px;
            line-height: 1.7;
            background: var(--bg-deep);
            color: var(--text-light);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition-fast);
        }
        a:hover {
            color: var(--secondary-light);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
        }
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul {
            list-style: none;
        }

        /*----------------------------------------
          3. 容器
        ----------------------------------------*/
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        /*----------------------------------------
          4. 浮动 Dock 导航 (Navbar)
        ----------------------------------------*/
        .navbar-dock {
            position: fixed;
            top: 18px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1050;
            width: calc(100% - 32px);
            max-width: 1180px;
            background: rgba(18, 18, 42, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-xl);
            padding: 8px 20px;
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.6), var(--shadow-glow);
            transition: var(--transition-base);
        }
        .navbar-dock.scrolled {
            background: rgba(10, 10, 26, 0.92);
            border-color: rgba(108, 59, 255, 0.35);
        }

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

        /* Brand */
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: -0.3px;
            transition: var(--transition-fast);
            flex-shrink: 0;
        }
        .brand i {
            font-size: 26px;
            color: var(--secondary);
            filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
        }
        .brand span {
            background: linear-gradient(135deg, var(--text-white) 30%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .brand:hover {
            opacity: 0.85;
        }

        /* 导航链接 */
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .nav-links li a {
            display: inline-block;
            padding: 8px 18px;
            border-radius: var(--radius-lg);
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
            white-space: nowrap;
        }
        .nav-links li a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-links li a.active {
            color: var(--text-white);
            background: linear-gradient(135deg, rgba(108, 59, 255, 0.35), rgba(0, 212, 255, 0.12));
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--secondary);
            border-radius: 4px;
            opacity: 0.5;
        }

        /* 右侧 CTA */
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .search-toggle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 18px;
            transition: var(--transition-fast);
        }
        .search-toggle:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }

        .btn-dock {
            padding: 9px 24px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-white);
            font-weight: 600;
            font-size: 14px;
            border: none;
            transition: var(--transition-base);
            box-shadow: 0 4px 18px rgba(108, 59, 255, 0.3);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .btn-dock:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(108, 59, 255, 0.45);
            color: var(--text-white);
        }
        .btn-dock:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(108, 59, 255, 0.2);
        }

        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 22px;
            transition: var(--transition-fast);
        }
        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-white);
        }

        /* 移动端导航 */
        @media (max-width: 820px) {
            .navbar-dock {
                top: 12px;
                padding: 6px 14px;
                border-radius: var(--radius-lg);
            }
            .brand {
                font-size: 18px;
            }
            .brand i {
                font-size: 20px;
            }
            .nav-links {
                position: fixed;
                top: 70px;
                left: 12px;
                right: 12px;
                background: rgba(12, 12, 30, 0.96);
                backdrop-filter: blur(20px);
                border: 1px solid var(--border-glow);
                border-radius: var(--radius-lg);
                flex-direction: column;
                padding: 12px 8px;
                gap: 2px;
                opacity: 0;
                visibility: hidden;
                transform: translateY(-12px) scale(0.96);
                transition: var(--transition-base);
                box-shadow: 0 24px 64px rgba(0, 0, 0, 0.7);
                max-height: 70vh;
                overflow-y: auto;
            }
            .nav-links.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0) scale(1);
            }
            .nav-links li a {
                width: 100%;
                padding: 12px 20px;
                font-size: 16px;
                border-radius: var(--radius-md);
            }
            .mobile-toggle {
                display: flex;
            }
            .btn-dock {
                padding: 7px 16px;
                font-size: 13px;
            }
            .search-toggle {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }
        }

        @media (max-width: 480px) {
            .navbar-dock {
                top: 8px;
                padding: 4px 10px;
            }
            .brand {
                font-size: 16px;
                gap: 6px;
            }
            .brand i {
                font-size: 17px;
            }
            .btn-dock {
                padding: 6px 12px;
                font-size: 12px;
            }
            .nav-links {
                top: 62px;
                left: 8px;
                right: 8px;
                padding: 10px 6px;
            }
            .nav-links li a {
                padding: 10px 16px;
                font-size: 15px;
            }
        }

        /*----------------------------------------
          5. Hero 区域
        ----------------------------------------*/
        .hero-portal {
            position: relative;
            padding: 160px 0 80px;
            background: linear-gradient(160deg, #0a0a1a 0%, #0f0f2a 40%, #151535 100%);
            overflow: hidden;
            text-align: center;
        }
        .hero-portal::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(108, 59, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-portal::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -15%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-portal .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-portal .badge-hero {
            display: inline-block;
            padding: 6px 22px;
            border-radius: var(--radius-xl);
            background: rgba(108, 59, 255, 0.18);
            border: 1px solid rgba(108, 59, 255, 0.25);
            color: var(--secondary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-portal h1 {
            font-family: var(--font-display);
            font-size: clamp(36px, 6vw, 68px);
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-white);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-portal h1 span {
            background: linear-gradient(135deg, var(--secondary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-portal p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-portal .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .hero-portal .hero-stat-item {
            text-align: center;
        }
        .hero-portal .hero-stat-item .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .hero-portal .hero-stat-item .num small {
            font-size: 18px;
            font-weight: 500;
            color: var(--secondary);
        }
        .hero-portal .hero-stat-item .label {
            font-size: 14px;
            color: var(--text-dim);
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .hero-portal {
                padding: 130px 0 60px;
            }
            .hero-portal h1 {
                font-size: 32px;
            }
            .hero-portal p {
                font-size: 16px;
                padding: 0 12px;
            }
            .hero-portal .hero-stats {
                gap: 24px;
            }
            .hero-portal .hero-stat-item .num {
                font-size: 26px;
            }
        }
        @media (max-width: 480px) {
            .hero-portal {
                padding: 110px 0 48px;
            }
            .hero-portal h1 {
                font-size: 26px;
            }
            .hero-portal .hero-stats {
                gap: 16px;
            }
            .hero-portal .hero-stat-item .num {
                font-size: 22px;
            }
        }

        /*----------------------------------------
          6. 板块通用
        ----------------------------------------*/
        .section-portal {
            padding: var(--space-xl) 0;
        }
        .section-portal .section-label {
            display: inline-block;
            padding: 4px 18px;
            border-radius: var(--radius-xl);
            background: rgba(108, 59, 255, 0.12);
            border: 1px solid rgba(108, 59, 255, 0.15);
            color: var(--secondary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .section-portal .section-title {
            font-family: var(--font-display);
            font-size: clamp(28px, 3.6vw, 42px);
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-portal .section-sub {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 580px;
            margin-bottom: 40px;
        }
        .section-portal .section-sub.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        @media (max-width: 768px) {
            .section-portal {
                padding: var(--space-lg) 0;
            }
            .section-portal .section-title {
                font-size: 26px;
            }
            .section-portal .section-sub {
                font-size: 15px;
            }
        }

        /*----------------------------------------
          7. 卡片网格
        ----------------------------------------*/
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .card-grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        @media (max-width: 992px) {
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .card-grid-2 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .card-grid-3 {
                grid-template-columns: 1fr;
            }
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* 卡片 */
        .card-portal {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition-base);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .card-portal::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition-base);
        }
        .card-portal:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .card-portal:hover::before {
            opacity: 1;
        }
        .card-portal .card-icon {
            font-size: 36px;
            color: var(--secondary);
            margin-bottom: 16px;
            display: inline-block;
        }
        .card-portal h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }
        .card-portal p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .card-portal .card-tag {
            display: inline-block;
            padding: 2px 14px;
            border-radius: var(--radius-xl);
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid rgba(0, 212, 255, 0.12);
            color: var(--secondary);
            font-size: 12px;
            font-weight: 500;
            margin-top: 14px;
        }

        /* 大卡片 (图文) */
        .card-portal-large {
            display: flex;
            align-items: center;
            gap: 32px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px;
            transition: var(--transition-base);
            box-shadow: var(--shadow-card);
        }
        .card-portal-large:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .card-portal-large .large-icon {
            flex-shrink: 0;
            width: 80px;
            height: 80px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(108, 59, 255, 0.2), rgba(0, 212, 255, 0.08));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 38px;
            color: var(--secondary);
        }
        .card-portal-large .large-content {
            flex: 1;
        }
        .card-portal-large h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }
        .card-portal-large p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .card-portal-large .btn-link {
            color: var(--secondary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .card-portal-large .btn-link:hover {
            color: var(--secondary-light);
            gap: 10px;
        }

        @media (max-width: 768px) {
            .card-portal-large {
                flex-direction: column;
                text-align: center;
                padding: 24px 20px;
                gap: 16px;
            }
            .card-portal-large .large-icon {
                width: 64px;
                height: 64px;
                font-size: 30px;
            }
        }

        /*----------------------------------------
          8. 按钮
        ----------------------------------------*/
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-white);
            font-weight: 600;
            font-size: 16px;
            border: none;
            transition: var(--transition-base);
            box-shadow: 0 6px 24px rgba(108, 59, 255, 0.3);
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(108, 59, 255, 0.45);
            color: var(--text-white);
        }
        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: 0 4px 14px rgba(108, 59, 255, 0.2);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: var(--radius-lg);
            background: transparent;
            color: var(--secondary);
            font-weight: 600;
            font-size: 15px;
            border: 1.5px solid rgba(0, 212, 255, 0.25);
            transition: var(--transition-base);
        }
        .btn-outline-custom:hover {
            background: rgba(0, 212, 255, 0.06);
            border-color: var(--secondary);
            color: var(--secondary-light);
            transform: translateY(-2px);
        }

        @media (max-width: 480px) {
            .btn-primary-custom {
                padding: 12px 24px;
                font-size: 15px;
            }
            .btn-outline-custom {
                padding: 11px 22px;
                font-size: 14px;
            }
        }

        /*----------------------------------------
          9. 标签 / 徽章
        ----------------------------------------*/
        .tag-sm {
            display: inline-block;
            padding: 2px 14px;
            border-radius: var(--radius-xl);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            font-size: 12px;
            font-weight: 500;
        }
        .tag-sm.active {
            background: rgba(108, 59, 255, 0.15);
            border-color: rgba(108, 59, 255, 0.2);
            color: var(--secondary);
        }

        .badge-flow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-white);
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 4px 16px rgba(108, 59, 255, 0.3);
        }

        /*----------------------------------------
          10. 特色列表 / 流程
        ----------------------------------------*/
        .feature-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            transition: var(--transition-fast);
        }
        .feature-list li:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
        }
        .feature-list li i {
            color: var(--secondary);
            font-size: 20px;
            margin-top: 2px;
            flex-shrink: 0;
        }
        .feature-list li .text {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
        }
        .feature-list li .text strong {
            color: var(--text-white);
        }

        @media (max-width: 768px) {
            .feature-list {
                grid-template-columns: 1fr;
            }
        }

        /* 流程步骤 */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 28px 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            position: relative;
            transition: var(--transition-base);
        }
        .step-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            transform: translateY(-3px);
        }
        .step-item .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-white);
            font-weight: 700;
            font-size: 18px;
            margin-bottom: 16px;
            box-shadow: 0 4px 20px rgba(108, 59, 255, 0.25);
        }
        .step-item h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        @media (max-width: 992px) {
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-row {
                grid-template-columns: 1fr;
            }
        }

        /*----------------------------------------
          11. 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-subtle);
            border-radius: var(--radius-sm);
            padding: 0;
            transition: var(--transition-base);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-item .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            gap: 16px;
            transition: var(--transition-fast);
        }
        .faq-item .faq-question:hover {
            color: var(--text-white);
        }
        .faq-item .faq-question i {
            color: var(--secondary);
            font-size: 18px;
            transition: var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        @media (max-width: 480px) {
            .faq-item .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 14px;
            }
        }

        /*----------------------------------------
          12. CTA 区块
        ----------------------------------------*/
        .cta-portal {
            background: linear-gradient(145deg, #12122a, #1a1a3a);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            box-shadow: var(--shadow-card), var(--shadow-glow);
            position: relative;
            overflow: hidden;
        }
        .cta-portal::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(108, 59, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-portal h2 {
            font-family: var(--font-display);
            font-size: clamp(26px, 3.2vw, 38px);
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }
        .cta-portal p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 2;
        }
        .cta-portal .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        @media (max-width: 768px) {
            .cta-portal {
                padding: 40px 24px;
            }
            .cta-portal h2 {
                font-size: 24px;
            }
            .cta-portal p {
                font-size: 15px;
            }
        }
        @media (max-width: 480px) {
            .cta-portal {
                padding: 32px 18px;
            }
            .cta-portal .cta-actions {
                flex-direction: column;
                align-items: center;
            }
        }

        /*----------------------------------------
          13. 页脚
        ----------------------------------------*/
        .site-footer {
            background: #0a0a16;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 60px 0 24px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-white);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .footer-logo i {
            color: var(--secondary);
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-dim);
            margin-top: 12px;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: var(--text-dim);
            font-size: 14px;
            transition: var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--divider);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-dim);
            margin: 0;
        }
        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-dim);
            transition: var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--secondary);
        }

        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-desc {
                max-width: 100%;
            }
        }

        /*----------------------------------------
          14. 背景斜线与装饰 (可选)
        ----------------------------------------*/
        .bg-grid {
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 40px 40px;
        }

        /*----------------------------------------
          15. 页面顶部偏移 (fixed nav)
        ----------------------------------------*/
        .page-main {
            padding-top: 80px;
        }
        @media (max-width: 820px) {
            .page-main {
                padding-top: 70px;
            }
        }
        @media (max-width: 480px) {
            .page-main {
                padding-top: 62px;
            }
        }

        /* 分隔线装饰 */
        .divider-glow {
            width: 60px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin: 12px 0 20px;
        }

        /* 星空微点 */
        .dot-particles {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            overflow: hidden;
            z-index: 0;
        }
        .dot-particles span {
            position: absolute;
            width: 2px;
            height: 2px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            animation: float 8s infinite ease-in-out alternate;
        }
        @keyframes float {
            0% {
                transform: translateY(0) scale(1);
                opacity: 0.2;
            }
            100% {
                transform: translateY(-30px) scale(1.6);
                opacity: 0.6;
            }
        }