/* roulang page: index */
:root {
            --bg-base: #0B0F19;
            --bg-card: #111827;
            --bg-card-hover: #1A2234;
            --primary-gradient: linear-gradient(135deg, #6366F1 0%, #06B6D4 100%);
            --accent-cyan: #22D3EE;
            --accent-coral: #F43F5E;
            --text-heading: #F9FAFB;
            --text-body: #9CA3AF;
            --text-muted: #6B7280;
            --border-glow: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(99, 102, 241, 0.4);
            --radius-card: 20px;
            --radius-pill: 9999px;
            --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
            --shadow-hover: 0 20px 40px -15px rgba(99, 102, 241, 0.35);
        }

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

        body {
            background-color: var(--bg-base);
            color: var(--text-body);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

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

        /* 顶部杂志刊头双行导航 */
        .mag-header {
            background: rgba(11, 15, 25, 0.95);
            border-bottom: 1px solid var(--border-glow);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(12px);
        }

        .mag-masthead-top {
            padding: 18px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .brand-logo-text {
            font-size: 1.85rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .brand-logo-text i {
            -webkit-text-fill-color: var(--accent-cyan);
        }

        .masthead-meta {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 20px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .status-indicator {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: var(--radius-pill);
            color: var(--accent-cyan);
            font-weight: 500;
        }

        .status-dot {
            width: 7px;
            height: 7px;
            background: #10B981;
            border-radius: 50%;
            box-shadow: 0 0 8px #10B981;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.85); }
        }

        .mag-channel-nav {
            padding: 10px 0;
        }

        .channel-menu {
            display: flex;
            list-style: none;
            margin: 0;
            gap: 28px;
            align-items: center;
            overflow-x: auto;
            white-space: nowrap;
        }

        .channel-menu li a {
            color: var(--text-heading);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 6px 0;
            position: relative;
        }

        .channel-menu li a:hover,
        .channel-menu li.active a {
            color: var(--accent-cyan);
        }

        .channel-menu li.active a::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-cyan);
        }

        /* 徽章系统与按钮 */
        .data-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(99, 102, 241, 0.12);
            border: 1px solid rgba(99, 102, 241, 0.3);
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }

        .btn-gradient {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: var(--primary-gradient);
            color: #FFFFFF !important;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 28px;
            border-radius: var(--radius-pill);
            box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-gradient:hover {
            box-shadow: 0 6px 25px rgba(6, 182, 212, 0.6);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-heading) !important;
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 28px;
            border-radius: var(--radius-pill);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent-cyan);
            color: var(--accent-cyan) !important;
        }

        /* 统一卡片与容器样式 */
        .section-wrap {
            padding: 85px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            position: relative;
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-title {
            color: var(--text-heading);
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            color: var(--text-body);
            font-size: 1.05rem;
            max-width: 780px;
            line-height: 1.7;
        }

        .big-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .big-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
            transform: translateY(-5px);
        }

        /* 板块1：Hero 自测选型 */
        .hero-banner-bg {
            background: radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.22) 0%, transparent 60%),
                        linear-gradient(180deg, #0B0F19 0%, #111827 100%);
            padding: 90px 0 100px;
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 900;
            color: var(--text-heading);
            line-height: 1.15;
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .hero-title span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 35px;
        }

        .selector-box {
            background: rgba(17, 24, 39, 0.85);
            border: 1px solid rgba(99, 102, 241, 0.35);
            border-radius: var(--radius-card);
            padding: 30px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(16px);
        }

        .quiz-option {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            padding: 14px 18px;
            margin-bottom: 12px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: var(--text-heading);
            font-weight: 600;
            transition: all 0.2s;
        }

        .quiz-option:hover, .quiz-option.active {
            background: rgba(99, 102, 241, 0.15);
            border-color: var(--accent-cyan);
            color: #FFFFFF;
        }

        /* 板块2：全球覆盖节点与低延迟架构 */
        .node-stat-pill {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border-glow);
            border-radius: 16px;
            margin-bottom: 16px;
        }

        .node-stat-icon {
            font-size: 1.8rem;
            color: var(--accent-cyan);
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(34, 211, 238, 0.1);
            border-radius: 12px;
        }

        /* 板块3：核心场景卡 */
        .scene-card-img {
            border-radius: 14px;
            height: 200px;
            object-fit: cover;
            width: 100%;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        /* 板块4：本地化能力与转码规范 (参数对比) */
        .spec-table-custom {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0 10px;
        }

        .spec-table-custom tr {
            background: rgba(255, 255, 255, 0.02);
        }

        .spec-table-custom td {
            padding: 16px 20px;
            border-top: 1px solid var(--border-glow);
            border-bottom: 1px solid var(--border-glow);
            color: var(--text-body);
        }

        .spec-table-custom td:first-child {
            border-left: 1px solid var(--border-glow);
            border-radius: 12px 0 0 12px;
            font-weight: 700;
            color: var(--text-heading);
            width: 35%;
        }

        .spec-table-custom td:last-child {
            border-right: 1px solid var(--border-glow);
            border-radius: 0 12px 12px 0;
            color: var(--accent-cyan);
            font-weight: 600;
        }

        /* 板块7：运行数据指标 */
        .metric-big-num {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1;
            margin-bottom: 8px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* 评价卡与故事时间轴 */
        .review-quote {
            font-style: italic;
            color: var(--text-heading);
            font-size: 0.95rem;
            line-height: 1.7;
            margin: 16px 0;
        }

        .reviewer-meta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .reviewer-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            border: 2px solid var(--accent-cyan);
            object-fit: cover;
        }

        /* FAQ 手风琴微调 */
        .faq-item-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: 16px;
            margin-bottom: 16px;
            overflow: hidden;
        }

        .faq-trigger {
            padding: 22px 28px;
            font-weight: 700;
            color: var(--text-heading);
            font-size: 1.1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: all 0.25s;
        }

        .faq-trigger:hover {
            color: var(--accent-cyan);
        }

        .faq-body {
            padding: 0 28px 24px;
            color: var(--text-body);
            line-height: 1.75;
            display: none;
        }

        .faq-item-card.open .faq-body {
            display: block;
        }

        .faq-item-card.open .faq-icon {
            transform: rotate(180deg);
            color: var(--accent-cyan);
        }

        /* 浮动转化条 */
        .floating-cta-bar {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(17, 24, 39, 0.92);
            border: 1px solid rgba(99, 102, 241, 0.4);
            border-radius: var(--radius-pill);
            padding: 10px 24px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
            z-index: 999;
            display: flex;
            align-items: center;
            gap: 24px;
            backdrop-filter: blur(10px);
        }

        /* 页脚规范 */
        .site-footer {
            background: #070A11;
            padding: 70px 0 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .site-footer h4 {
            color: var(--text-heading);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 22px;
            position: relative;
            padding-bottom: 8px;
        }

        .site-footer h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--accent-cyan);
        }

        .site-footer ul {
            list-style: none;
            margin: 0;
        }

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

        .site-footer ul li a:hover {
            color: var(--accent-cyan);
            padding-left: 4px;
        }

        .copyright-bar {
            margin-top: 50px;
            padding-top: 25px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            font-size: 0.85rem;
        }

        @media (max-width: 768px) {
            .hero-title { font-size: 2.1rem; }
            .section-title { font-size: 1.7rem; }
            .floating-cta-bar { width: 92%; justify-content: space-between; gap: 10px; padding: 10px 16px; }
            .floating-cta-text { display: none; }
        }