/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #00d4ff;
            --primary-dark: #009dcc;
            --primary-glow: rgba(0, 212, 255, 0.35);
            --secondary: #7c3aed;
            --secondary-glow: rgba(124, 58, 237, 0.3);
            --accent: #f59e0b;
            --accent-glow: rgba(245, 158, 11, 0.3);
            --bg-deep: #080c16;
            --bg-card: #111827;
            --bg-card-hover: #1a2332;
            --bg-elevated: #1e293b;
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: rgba(0, 212, 255, 0.15);
            --border-glow: rgba(0, 212, 255, 0.3);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 20px var(--primary-glow);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --nav-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        .container-narrow {
            max-width: 960px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(8, 12, 22, 0.55);
            backdrop-filter: blur(16px) saturate(1.4);
            -webkit-backdrop-filter: blur(16px) saturate(1.4);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
            transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
        }

        .site-header.scrolled {
            background: rgba(8, 12, 22, 0.92);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
            border-bottom-color: rgba(0, 212, 255, 0.25);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-logo {
            font-size: 1.55rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .site-logo:hover {
            color: var(--primary);
            text-shadow: 0 0 20px var(--primary-glow);
        }
        .site-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 8px;
            color: #fff;
            font-size: 1.2rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--text-primary);
            background: rgba(0, 212, 255, 0.08);
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(0, 212, 255, 0.12);
            box-shadow: inset 0 -2px 0 var(--primary);
        }
        .nav-links a.active:hover {
            background: rgba(0, 212, 255, 0.18);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px !important;
            background: linear-gradient(135deg, var(--primary), var(--secondary)) !important;
            color: #fff !important;
            border-radius: var(--radius-md) !important;
            font-weight: 600 !important;
            font-size: 0.9rem !important;
            box-shadow: 0 4px 16px rgba(0, 212, 255, 0.25);
            transition: var(--transition) !important;
        }
        .nav-cta:hover {
            transform: translateY(-2px) !important;
            box-shadow: 0 8px 28px rgba(0, 212, 255, 0.35) !important;
            background: linear-gradient(135deg, #00e5ff, #8b5cf6) !important;
            color: #fff !important;
        }
        .nav-cta:active {
            transform: translateY(0) !important;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            color: var(--primary);
            background: rgba(0, 212, 255, 0.08);
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(8, 12, 22, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.35s ease, opacity 0.35s ease;
                box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 18px;
                font-size: 1.05rem;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active {
                background: rgba(0, 212, 255, 0.12);
            }
            .nav-cta {
                width: 100%;
                justify-content: center;
                margin-top: 8px;
                padding: 14px 24px !important;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-deep);
        }
        .section-card-bg {
            background: var(--bg-card);
        }
        .section-gradient {
            background: linear-gradient(180deg, var(--bg-deep) 0%, #0f1729 50%, var(--bg-deep) 100%);
        }

        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            text-align: center;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--text-primary), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 680px;
            margin: 0 auto 48px;
            line-height: 1.8;
        }

        .section-title-left {
            text-align: left;
            -webkit-background-clip: unset;
            -webkit-text-fill-color: unset;
            background: none;
            color: var(--text-primary);
        }
        .section-subtitle-left {
            text-align: left;
            margin-left: 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 32px;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            overflow: hidden;
            background: var(--bg-deep);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.3;
            z-index: 0;
            filter: brightness(0.6) saturate(1.1);
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 12, 22, 0.85) 0%, rgba(8, 12, 22, 0.5) 50%, rgba(8, 12, 22, 0.85) 100%);
            z-index: 1;
        }

        .hero-overlay-glow {
            position: absolute;
            top: -30%;
            right: -20%;
            width: 70%;
            height: 80%;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.12) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }
        .hero-overlay-glow-2 {
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 60%;
            height: 60%;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.1) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.25);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.85rem;
            color: var(--primary);
            margin-bottom: 24px;
            letter-spacing: 0.3px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 0.75rem;
        }

        .hero h1 {
            font-size: 3.6rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-primary);
            text-shadow: 0 4px 32px rgba(0, 0, 0, 0.3);
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.9;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn:hover {
            transform: translateY(-3px);
            text-decoration: none;
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
        }
        .btn-primary:hover {
            box-shadow: 0 8px 32px rgba(0, 212, 255, 0.45);
            color: #fff;
            background: linear-gradient(135deg, #00e5ff, #8b5cf6);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 2px solid var(--border-color);
            backdrop-filter: blur(4px);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 212, 255, 0.06);
            box-shadow: 0 0 24px var(--primary-glow);
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 0.9rem;
            border-radius: var(--radius-sm);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px 48px;
            justify-content: center;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 90vh;
                padding: 100px 20px 60px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 20px 32px;
            }
            .hero-stat-value {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 28px 24px;
            transition: var(--transition);
            height: 100%;
        }
        .card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 16px var(--primary-glow);
            transform: translateY(-4px);
            background: var(--bg-card-hover);
        }

        .card-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(124, 58, 237, 0.12));
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .card-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
        }
        .card-cover:hover {
            border-color: var(--border-glow);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 16px var(--primary-glow);
            transform: translateY(-4px);
        }
        .card-cover-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-cover-body {
            padding: 18px 20px 22px;
        }
        .card-cover-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .card-cover-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .badge {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .badge-primary {
            background: rgba(0, 212, 255, 0.15);
            color: var(--primary);
            border: 1px solid rgba(0, 212, 255, 0.2);
        }
        .badge-accent {
            background: rgba(245, 158, 11, 0.15);
            color: var(--accent);
            border: 1px solid rgba(245, 158, 11, 0.2);
        }
        .badge-secondary {
            background: rgba(124, 58, 237, 0.15);
            color: var(--secondary);
            border: 1px solid rgba(124, 58, 237, 0.2);
        }

        /* ===== 特色板块网格 ===== */
        .features-grid .cell {
            margin-bottom: 24px;
        }

        /* ===== 游戏卡片网格 ===== */
        .game-grid .cell {
            margin-bottom: 24px;
        }

        /* ===== 资讯列表 ===== */
        .news-list .news-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: var(--transition);
        }
        .news-list .news-item:last-child {
            border-bottom: none;
        }
        .news-list .news-item:hover {
            padding-left: 8px;
        }
        .news-item .news-badge {
            flex-shrink: 0;
            margin-top: 2px;
        }
        .news-item .news-content {
            flex: 1;
        }
        .news-item .news-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            transition: var(--transition);
        }
        .news-item:hover .news-title {
            color: var(--primary);
        }
        .news-item .news-summary {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 6px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .news-item .news-meta i {
            margin-right: 4px;
            font-size: 0.7rem;
        }

        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            font-size: 1.05rem;
            background: rgba(255, 255, 255, 0.02);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-color);
        }

        /* ===== 用户评价 ===== */
        .review-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 24px;
            transition: var(--transition);
            height: 100%;
        }
        .review-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .review-stars {
            color: var(--accent);
            font-size: 0.9rem;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }
        .review-text {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            font-style: italic;
            margin-bottom: 16px;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .review-name {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
        }
        .review-tag {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* ===== 流程步骤 ===== */
        .step-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
            position: relative;
        }
        .step-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
            transform: translateY(-2px);
        }
        .step-number {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-size: 1.4rem;
            font-weight: 800;
            box-shadow: 0 4px 16px rgba(0, 212, 255, 0.3);
        }
        .step-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .step-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .step-connector {
                display: block;
                position: absolute;
                top: 44px;
                right: -24px;
                width: 48px;
                height: 2px;
                background: linear-gradient(90deg, var(--primary), transparent);
                opacity: 0.4;
            }
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--border-glow);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            gap: 12px;
        }
        .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(124, 58, 237, 0.05));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -30%;
            width: 80%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.06), transparent 70%);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            right: -20%;
            width: 60%;
            height: 150%;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.06), transparent 70%);
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 60px 24px;
        }
        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .cta-content p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            .cta-content h2 {
                font-size: 1.6rem;
            }
            .cta-content p {
                font-size: 1rem;
            }
            .cta-content {
                padding: 40px 16px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #050810;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 56px 0 32px;
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .footer-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-heading {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-links a {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 1rem;
        }
        .footer-social a:hover {
            background: rgba(0, 212, 255, 0.12);
            color: var(--primary);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-container {
            max-width: 1200px;
        }
        .grid-x {
            margin-left: -12px;
            margin-right: -12px;
        }
        .cell {
            padding-left: 12px;
            padding-right: 12px;
        }
        .grid-padding-x .cell {
            padding-left: 12px;
            padding-right: 12px;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .container-narrow {
                padding: 0 16px;
            }
            .container-wide {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --nav-height: 60px;
            }
            .site-logo {
                font-size: 1.25rem;
            }
            .site-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 1rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-deep);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--text-muted);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-secondary);
        }

        /* ===== 选中文本 ===== */
        ::selection {
            background: rgba(0, 212, 255, 0.25);
            color: var(--text-primary);
        }

        /* ===== 加载动画 ===== */
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

/* roulang page: article */
:root {
            --primary: #00b4d8;
            --primary-dark: #0077b6;
            --primary-light: #90e0ef;
            --secondary: #7209b7;
            --accent: #f72585;
            --accent-glow: rgba(247, 37, 133, 0.4);
            --bg-dark: #0b0f1a;
            --bg-card: #121726;
            --bg-section: #0f1420;
            --bg-input: #1a2035;
            --text-primary: #f0f4ff;
            --text-secondary: #b0bcd9;
            --text-muted: #6b7a9a;
            --border-color: rgba(0, 180, 216, 0.15);
            --border-glow: rgba(0, 180, 216, 0.25);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 180, 216, 0.08);
            --shadow-glow: 0 0 30px rgba(0, 180, 216, 0.15);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html { scroll-behavior: smooth; font-size: 16px; }

        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; width: 100%; }

        ::selection { background: var(--primary); color: #fff; }
        ::-webkit-scrollbar { width: 8px; background: var(--bg-dark); }
        ::-webkit-scrollbar-thumb { background: var(--primary-dark); border-radius: 10px; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 15, 26, 0.72);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
            transition: background var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(11, 15, 26, 0.94);
            box-shadow: 0 4px 40px rgba(0, 0, 0, 0.6);
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, #00b4d8, #f72585);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover { opacity: 0.9; }
        .site-logo .logo-icon {
            background: rgba(0, 180, 216, 0.15);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            -webkit-text-fill-color: #00b4d8;
            border: 1px solid rgba(0, 180, 216, 0.25);
            box-shadow: 0 0 20px rgba(0, 180, 216, 0.15);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            font-size: 1.3rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: background var(--transition), border-color var(--transition);
        }
        .nav-toggle:hover { background: rgba(0, 180, 216, 0.1); border-color: var(--primary); }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: #fff; background: rgba(0, 180, 216, 0.08); }
        .nav-links a.active {
            color: #fff;
            background: rgba(0, 180, 216, 0.15);
            box-shadow: 0 0 20px rgba(0, 180, 216, 0.08);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 600;
            padding: 8px 22px;
            box-shadow: 0 4px 20px rgba(247, 37, 133, 0.3);
            border: none;
        }
        .nav-links a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(247, 37, 133, 0.4);
        }

        /* ===== Hero ===== */
        .article-hero {
            position: relative;
            padding: 140px 0 80px;
            min-height: 420px;
            display: flex;
            align-items: flex-end;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            isolation: isolate;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 26, 0.50) 0%, rgba(11, 15, 26, 0.88) 70%, var(--bg-dark) 100%);
            z-index: 0;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 60%, rgba(0, 180, 216, 0.08) 0%, transparent 70%);
            z-index: 0;
        }
        .article-hero .container { position: relative; z-index: 1; }

        .article-hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-hero-breadcrumb a { color: var(--text-secondary); }
        .article-hero-breadcrumb a:hover { color: var(--primary); }
        .article-hero-breadcrumb .sep { color: var(--text-muted); }

        .article-hero-category {
            display: inline-block;
            background: rgba(0, 180, 216, 0.12);
            border: 1px solid rgba(0, 180, 216, 0.2);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            max-width: 860px;
            margin-bottom: 20px;
            letter-spacing: -0.3px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .article-hero-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .article-hero-meta span { display: flex; align-items: center; gap: 6px; }
        .article-hero-meta i { color: var(--primary); width: 16px; }

        /* ===== Article Content ===== */
        .article-content-section {
            padding: 60px 0;
            background: var(--bg-section);
        }
        .article-content-inner {
            max-width: 820px;
            margin: 0 auto;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px 52px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }

        .article-content-inner .cms-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-primary);
        }
        .article-content-inner .cms-content p { margin-bottom: 1.2em; }
        .article-content-inner .cms-content h2, 
        .article-content-inner .cms-content h3 { 
            color: #fff; 
            margin-top: 1.6em; 
            margin-bottom: 0.6em; 
            font-weight: 700; 
        }
        .article-content-inner .cms-content h2 { font-size: 1.6rem; border-left: 4px solid var(--primary); padding-left: 16px; }
        .article-content-inner .cms-content h3 { font-size: 1.3rem; }
        .article-content-inner .cms-content ul, 
        .article-content-inner .cms-content ol { 
            padding-left: 24px; 
            margin-bottom: 1.2em; 
            list-style: disc; 
            color: var(--text-secondary); 
        }
        .article-content-inner .cms-content li { margin-bottom: 0.4em; }
        .article-content-inner .cms-content a { color: var(--primary-light); text-decoration: underline; text-underline-offset: 3px; }
        .article-content-inner .cms-content a:hover { color: var(--primary); }
        .article-content-inner .cms-content img { border-radius: var(--radius-md); margin: 1.5em 0; box-shadow: var(--shadow-card); }
        .article-content-inner .cms-content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(247, 37, 133, 0.06);
            padding: 20px 24px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content-inner .cms-content code {
            background: rgba(0, 180, 216, 0.08);
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 0.9em;
            color: var(--primary-light);
        }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found h2 { font-size: 2rem; color: #fff; margin-bottom: 16px; }
        .article-not-found p { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 32px; }
        .article-not-found .button {
            display: inline-block;
            padding: 14px 40px;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(247, 37, 133, 0.25);
        }
        .article-not-found .button:hover { transform: translateY(-3px); box-shadow: 0 10px 35px rgba(247, 37, 133, 0.35); }

        /* ===== Article Footer (Tags / Share) ===== */
        .article-footer-nav {
            padding: 30px 0 60px;
            background: var(--bg-section);
        }
        .article-footer-nav .container {
            max-width: 820px;
            margin: 0 auto;
        }
        .article-tags {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .article-tags .tag-label { color: var(--text-muted); font-size: 0.9rem; font-weight: 500; }
        .article-tags .tag-item {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 30px;
            background: rgba(0, 180, 216, 0.06);
            border: 1px solid rgba(0, 180, 216, 0.12);
            color: var(--text-secondary);
            font-size: 0.82rem;
            transition: all var(--transition);
        }
        .article-tags .tag-item:hover {
            background: rgba(0, 180, 216, 0.15);
            border-color: var(--primary);
            color: #fff;
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 14px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }
        .article-share .share-label { color: var(--text-muted); font-size: 0.9rem; }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(0, 180, 216, 0.06);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .article-share a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0, 180, 216, 0.25);
        }

        .article-prev-next {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 30px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            flex-wrap: wrap;
        }
        .article-prev-next a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: color var(--transition);
            max-width: 45%;
        }
        .article-prev-next a:hover { color: var(--primary); }
        .article-prev-next a i { font-size: 0.85rem; }

        /* ===== Related Articles ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-dark);
        }
        .related-section .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            text-align: center;
            margin-bottom: 12px;
        }
        .related-section .section-sub {
            text-align: center;
            color: var(--text-muted);
            margin-bottom: 48px;
            font-size: 1.05rem;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .related-card:hover { transform: translateY(-8px); border-color: rgba(0, 180, 216, 0.3); box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 180, 216, 0.12); }
        .related-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .related-card .card-body { padding: 20px 22px 24px; }
        .related-card .card-cat {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .related-card .card-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-title a { color: #fff; }
        .related-card .card-title a:hover { color: var(--primary-light); }
        .related-card .card-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-section);
            position: relative;
            isolation: isolate;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 50%, rgba(0, 180, 216, 0.06) 0%, transparent 70%);
            z-index: 0;
        }
        .cta-section .container { position: relative; z-index: 1; text-align: center; }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 40px;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 25px rgba(247, 37, 133, 0.3);
        }
        .cta-btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(247, 37, 133, 0.4); color: #fff; }
        .cta-btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 36px;
            border-radius: 30px;
            background: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 1rem;
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: all var(--transition);
        }
        .cta-btn-secondary:hover { border-color: var(--primary); color: var(--primary); background: rgba(0, 180, 216, 0.05); }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 70px 0 80px;
            background: var(--bg-dark);
        }
        .faq-section .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            text-align: center;
            margin-bottom: 48px;
        }
        .faq-grid {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .faq-item:hover { border-color: rgba(0, 180, 216, 0.2); }
        .faq-item.open { border-color: rgba(0, 180, 216, 0.25); box-shadow: 0 0 30px rgba(0, 180, 216, 0.05); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            transition: color var(--transition);
            user-select: none;
        }
        .faq-question:hover { color: var(--primary-light); }
        .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== Footer ===== */
        .site-footer {
            background: #080b14;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
            color: var(--text-muted);
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            background: linear-gradient(135deg, #00b4d8, #f72585);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 300px;
        }
        .site-footer .footer-heading {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .site-footer .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition), padding-left var(--transition);
        }
        .site-footer .footer-links a:hover { color: var(--primary-light); padding-left: 4px; }
        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 0.85rem;
        }
        .site-footer .footer-social { display: flex; gap: 12px; }
        .site-footer .footer-social 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 var(--border-color);
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-hero h1 { font-size: 2.2rem; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .nav-toggle { display: flex; }
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(11, 15, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px;
                gap: 6px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 20px 40px rgba(0,0,0,0.5);
            }
            .nav-links.open { display: flex; }
            .nav-links a { width: 100%; justify-content: center; padding: 12px 20px; }
            .nav-links a.active::after { display: none; }

            .article-hero { padding: 120px 0 60px; min-height: auto; }
            .article-hero h1 { font-size: 1.7rem; }
            .article-hero-meta { gap: 14px; font-size: 0.82rem; }

            .article-content-inner { padding: 28px 24px; border-radius: var(--radius-md); }

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

            .cta-section h2 { font-size: 1.6rem; }
            .cta-section p { font-size: 1rem; }

            .faq-section .section-title { font-size: 1.5rem; }
            .faq-question { font-size: 0.92rem; padding: 14px 18px; }
            .faq-answer { padding: 0 18px 14px; font-size: 0.88rem; }

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

        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.4rem; }
            .article-content-inner { padding: 20px 16px; }
            .article-hero-category { font-size: 0.72rem; }
            .cta-btn-primary, .cta-btn-secondary { width: 100%; justify-content: center; }
            .article-prev-next { flex-direction: column; }
            .article-prev-next a { max-width: 100%; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 16px; }
        .mb-1 { margin-bottom: 16px; }
        .gap-1 { gap: 16px; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6C5CE7;
            --primary-dark: #5A4BD1;
            --primary-light: #8B7BF0;
            --secondary: #00B894;
            --secondary-dark: #00A381;
            --accent: #FDCB6E;
            --accent-dark: #F0BF5E;
            --bg-dark: #0D0D1A;
            --bg-card: #1A1A2E;
            --bg-card-hover: #222240;
            --bg-elevated: #252542;
            --text-primary: #F0F0F5;
            --text-secondary: #B0B0C8;
            --text-muted: #7A7A9A;
            --border-color: rgba(108, 92, 231, 0.2);
            --border-light: rgba(255, 255, 255, 0.06);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(108, 92, 231, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --grid-gap: 32px;
            --section-spacing: 100px;
            --container-max: 1200px;
        }

        /* ===== 基础重置 ===== */
        *,
        *::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: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(13, 13, 26, 0.72);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
            height: 72px;
            display: flex;
            align-items: center;
        }
        .site-header.scrolled {
            background: rgba(13, 13, 26, 0.94);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 26px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .site-logo:hover {
            color: var(--primary-light);
            transform: scale(1.02);
        }
        .site-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 10px;
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.02em;
        }
        .nav-links a:hover {
            color: var(--text-primary);
            background: rgba(108, 92, 231, 0.1);
        }
        .nav-links a.active {
            color: var(--text-primary);
            background: rgba(108, 92, 231, 0.18);
            box-shadow: inset 0 0 0 1px rgba(108, 92, 231, 0.15);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-links .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            padding: 10px 24px;
            border-radius: 12px;
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: 8px;
        }
        .nav-links .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(108, 92, 231, 0.4);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .nav-toggle {
            display: none;
            font-size: 24px;
            color: var(--text-primary);
            padding: 8px 12px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
            filter: saturate(0.6) brightness(0.5);
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(108, 92, 231, 0.25) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 50%, rgba(0, 184, 148, 0.15) 0%, transparent 60%);
            z-index: 1;
        }
        .hero-overlay-glow {
            position: absolute;
            top: -20%;
            left: -10%;
            width: 60%;
            height: 80%;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.12) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 880px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(108, 92, 231, 0.15);
            border: 1px solid rgba(108, 92, 231, 0.2);
            border-radius: 50px;
            padding: 6px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 28px;
            backdrop-filter: blur(8px);
        }
        .hero-badge i {
            font-size: 12px;
            color: var(--secondary);
        }
        .hero-title {
            font-size: clamp(40px, 8vw, 72px);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #ffffff, #c8c0f0, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
        }
        .hero-subtitle {
            font-size: clamp(18px, 2.2vw, 24px);
            color: var(--text-secondary);
            max-width: 720px;
            margin: 0 auto 36px;
            line-height: 1.6;
            font-weight: 400;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 600;
            padding: 16px 36px;
            border-radius: 14px;
            font-size: 17px;
            transition: var(--transition);
            box-shadow: 0 6px 30px rgba(108, 92, 231, 0.35);
            border: none;
            letter-spacing: 0.01em;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(108, 92, 231, 0.45);
            color: #fff;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            font-weight: 500;
            padding: 16px 32px;
            border-radius: 14px;
            font-size: 17px;
            transition: var(--transition);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(8px);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 48px;
            margin-top: 52px;
            padding-top: 36px;
            border-top: 1px solid var(--border-light);
            flex-wrap: wrap;
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
        }
        .hero-stat-number span {
            color: var(--primary-light);
        }
        .hero-stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--section-spacing) 0;
            position: relative;
        }
        .section-alt {
            background: var(--bg-card);
        }
        .section-dark-alt {
            background: rgba(26, 26, 46, 0.5);
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 12px;
            background: rgba(108, 92, 231, 0.1);
            padding: 4px 16px;
            border-radius: 50px;
            border: 1px solid rgba(108, 92, 231, 0.1);
        }
        .section-title {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .section-desc {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(108, 92, 231, 0.15);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md), var(--shadow-glow);
        }
        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            background: rgba(108, 92, 231, 0.12);
            color: var(--primary-light);
            transition: var(--transition);
        }
        .card:hover .card-icon {
            background: rgba(108, 92, 231, 0.2);
            transform: scale(1.05);
        }
        .card-icon.green {
            background: rgba(0, 184, 148, 0.12);
            color: var(--secondary);
        }
        .card-icon.gold {
            background: rgba(253, 203, 110, 0.12);
            color: var(--accent);
        }
        .card-icon.pink {
            background: rgba(232, 67, 147, 0.12);
            color: #E84393;
        }
        .card-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .card-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .card-image-wrap {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 20px;
            aspect-ratio: 16/10;
            background: var(--bg-elevated);
        }
        .card-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .card:hover .card-image-wrap img {
            transform: scale(1.04);
        }

        /* ===== 网格系统（Foundation 覆盖） ===== */
        .grid-x {
            display: flex;
            flex-flow: row wrap;
            gap: var(--grid-gap);
        }
        .grid-x>.cell {
            flex: 0 0 auto;
            min-height: initial;
            padding: 0;
        }
        .grid-margin-x {
            margin: 0 calc(var(--grid-gap) / -2);
        }
        .grid-margin-x>.cell {
            padding: 0 calc(var(--grid-gap) / 2);
        }

        /* ===== 特色卡片网格 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--grid-gap);
        }
        .features-grid .card {
            padding: 36px 28px;
        }

        /* ===== 场景卡片 ===== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--grid-gap);
        }
        .scene-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .scene-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }
        .scene-card:hover::before {
            opacity: 1;
        }
        .scene-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(108, 92, 231, 0.15);
        }
        .scene-icon {
            width: 68px;
            height: 68px;
            border-radius: 50%;
            background: rgba(108, 92, 231, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary-light);
            margin: 0 auto 20px;
            transition: var(--transition);
        }
        .scene-card:hover .scene-icon {
            background: rgba(108, 92, 231, 0.2);
            transform: scale(1.08);
        }
        .scene-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .scene-card p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--grid-gap);
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
            opacity: 0.3;
            z-index: 0;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
            transition: var(--transition);
        }
        .step-item:hover .step-number {
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(108, 92, 231, 0.4);
        }
        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
            max-width: 220px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(108, 92, 231, 0.12);
        }
        .faq-item.open {
            border-color: rgba(108, 92, 231, 0.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 28px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: var(--transition);
            gap: 16px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question .faq-icon {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--primary-light);
        }
        .faq-answer {
            padding: 0 28px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-answer p {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background: var(--bg-card);
            overflow: hidden;
        }
        .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
            filter: brightness(0.4);
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-title {
            font-size: clamp(30px, 4vw, 44px);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-desc {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: rgba(10, 10, 22, 0.98);
            border-top: 1px solid var(--border-light);
            padding: 60px 0 32px;
            position: relative;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }
        .footer-bottom {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-social {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 16px;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .footer-social a:hover {
            background: rgba(108, 92, 231, 0.15);
            color: var(--primary-light);
            border-color: rgba(108, 92, 231, 0.2);
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --section-spacing: 72px;
                --grid-gap: 24px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px 32px;
            }
            .steps-grid::before {
                display: none;
            }
            .hero-stats {
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-spacing: 56px;
                --grid-gap: 20px;
            }
            .site-header {
                height: 64px;
            }
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                background: rgba(13, 13, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
                border-radius: 8px;
            }
            .nav-links .nav-cta {
                margin-left: 0;
                justify-content: center;
                margin-top: 4px;
            }
            .nav-toggle {
                display: block;
            }
            .site-logo {
                font-size: 22px;
            }
            .site-logo .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }
            .hero-section {
                min-height: 90vh;
                padding: 100px 20px 60px;
            }
            .hero-title {
                font-size: clamp(32px, 10vw, 48px);
            }
            .hero-stats {
                gap: 24px;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .hero-stat-number {
                font-size: 22px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 20px;
            }
            .section-title {
                font-size: clamp(26px, 6vw, 34px);
            }
            .section-desc {
                font-size: 16px;
            }
            .card {
                padding: 24px 20px;
            }
            .faq-question {
                padding: 16px 20px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 20px 16px;
                font-size: 14px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 12px;
            }
            .footer-desc {
                max-width: 100%;
            }
            .cta-section {
                padding: 64px 0;
            }
            .btn-primary,
            .btn-secondary {
                padding: 14px 28px;
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --section-spacing: 44px;
                --grid-gap: 16px;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .hero-section {
                padding: 90px 16px 48px;
                min-height: 85vh;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-stats {
                gap: 16px;
                flex-direction: column;
                align-items: center;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .card-icon {
                width: 48px;
                height: 48px;
                font-size: 20px;
            }
            .site-footer {
                padding: 40px 0 24px;
            }
            .footer-bottom span {
                font-size: 12px;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .gap-sm {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--bg-elevated);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== 选中文本 ===== */
        ::selection {
            background: rgba(108, 92, 231, 0.3);
            color: #fff;
        }

        /* ===== 淡入动画 ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            animation: fadeInUp 0.8s ease forwards;
        }
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in-d1 {
            animation-delay: 0.1s;
        }
        .fade-in-d2 {
            animation-delay: 0.2s;
        }
        .fade-in-d3 {
            animation-delay: 0.3s;
        }
        .fade-in-d4 {
            animation-delay: 0.4s;
        }