/* ========== 全局重置 & 与首页完全统一 ========== */
        *{margin:0;padding:0;box-sizing:border-box;}
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f9fafc;
            color: #0b1e33;
            line-height: 1.5;
            scroll-behavior: smooth;
        }
        .container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
        
        /* 头部 — 毛玻璃现代 (同首页) */
        header {
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            position: sticky;
            top: 0;
            z-index: 50;
            border-bottom: 1px solid #eef2f6;
        }
        .header-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 14px 0;
        }
        .logo-area h1 {
            font-size: 1.9rem;
            font-weight: 750;
            background: linear-gradient(145deg, #0f2b4b, #2563eb);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            letter-spacing: -0.5px;
        }
        .logo-area p {
            font-size: 0.75rem;
            color: #54708f;
            margin-top: 4px;
            font-weight: 400;
            letter-spacing: 0.3px;
        }
        .nav-links {
            display: flex;
            gap: 1.4rem;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-links a {
            text-decoration: none;
            font-weight: 530;
            color: #1e2f44;
            transition: color 0.15s;
            font-size: 0.95rem;
        }
        .nav-links a:hover, .nav-links a.active { color: #2563eb; }

        /* TUN 专题特色 */
        .tun-hero {
            text-align: center;
            margin: 48px 0 32px;
        }
        .tun-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0b1e2e, #1e4bd2);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            letter-spacing: -0.02em;
        }
        .control-badge {
            background: #dbeafe;
            color: #1e4bd2;
            padding: 8px 28px;
            border-radius: 60px;
            font-weight: 700;
            display: inline-block;
            margin: 16px 0 8px;
            border: 1px solid #bdd3ff;
        }

        /* 决策问询卡片 */
        .decision-panel {
            background: white;
            border-radius: 48px;
            padding: 44px 40px;
            margin: 40px 0;
            border: 1px solid #d9e6ff;
            box-shadow: 0 15px 30px -8px rgba(0,35,70,0.04);
        }
        .decision-question {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 28px;
        }
        .symptom-grid {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }
        .symptom-card {
            flex: 1;
            min-width: 180px;
            background: #f2f8ff;
            border-radius: 32px;
            padding: 28px 20px;
            text-align: center;
            border: 1px solid #cde0f5;
            transition: transform 0.15s;
        }
        .symptom-card:hover { transform: translateY(-4px); }
        .symptom-emoji { font-size: 2.8rem; margin-bottom: 12px; }
        .symptom-card h3 { font-size: 1.5rem; margin-bottom: 8px; }
        .answer-badge {
            background: #10b981;
            color: white;
            padding: 18px 32px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1.4rem;
            display: inline-block;
            margin-top: 30px;
        }

        /* 对比表格 (结构化创意) */
        .mode-compare {
            margin: 60px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 30px;
        }
        .compare-table {
            background: white;
            border-radius: 40px;
            overflow: hidden;
            border: 1px solid #e2ecf9;
            box-shadow: 0 12px 24px -10px rgba(0,0,0,0.04);
        }
        .table-row {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            border-bottom: 1px solid #e9f0f8;
        }
        .table-row.header-row {
            background: #0f2b4b;
            color: white;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .table-row:last-child { border-bottom: none; }
        .table-cell {
            padding: 22px 20px;
            display: flex;
            align-items: center;
        }
        .badge-yes { color: #10b981; font-weight: 700; }
        .badge-partial { color: #fbbf24; }
        .badge-no { color: #ef4444; }

        /* 影响量化 + 场景卡片 */
        .impact-panel {
            background: linear-gradient(145deg, #0a1c2f, #1e3a5f);
            border-radius: 48px;
            padding: 48px 44px;
            margin: 60px 0;
            color: white;
        }
        .impact-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 36px;
        }
        .impact-metrics {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }
        .metric-item {
            flex: 1;
            min-width: 160px;
            background: #1e3b6350;
            backdrop-filter: blur(4px);
            border-radius: 32px;
            padding: 24px;
            border: 1px solid #5f8ec9;
        }
        .metric-value { font-size: 2.8rem; font-weight: 800; }

/* 使用场景卡片 — 升级版：呼应首页圆角、阴影、渐变边框 */
.scene-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 40px 0 20px;
}

.scene-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(4px);
    border-radius: 32px;
    padding: 28px 24px 24px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 18px 30px -10px rgba(0, 20, 50, 0.15);
    transition: all 0.2s ease;
    color: #0b1e33;
    /* 玻璃态微光效果 */
    background: linear-gradient(135deg, #ffffff 0%, #f9fcff 100%);
}

.scene-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 28px 35px -12px rgba(37, 99, 235, 0.18);
    border-color: #bdd3ff;
}

.scene-emoji {
    font-size: 2.6rem;
    margin-bottom: 16px;
    display: inline-block;
    background: #eef4ff;
    width: 60px;
    height: 60px;
    line-height: 60px;
    text-align: center;
    border-radius: 20px;
}

.scene-card h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #0f2b4b;
    letter-spacing: -0.3px;
}

.scene-card p {
    color: #3a5670;
    font-size: 0.95rem;
    line-height: 1.5;
    opacity: 0.9;
}
        /* 常见问题 (FAQ折叠创意) */
        .faq-tun {
            background: white;
            border-radius: 40px;
            padding: 36px 40px;
            margin: 50px 0;
            border: 1px solid #e2ecf9;
        }
        details {
            background: #f8fbfe;
            border-radius: 24px;
            padding: 8px 20px;
            margin-bottom: 12px;
            border: 1px solid #dee9f2;
        }
        summary {
            font-weight: 700;
            font-size: 1.2rem;
            padding: 18px 0;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 12px;
            color: #1e3b63;
        }
        summary::-webkit-details-marker { display: none; }
        summary::after {
            content: '▼';
            font-size: 0.9rem;
            margin-left: auto;
            color: #2563eb;
            transition: transform 0.2s;
        }
        details[open] summary::after { transform: rotate(180deg); }
        .faq-content { padding: 8px 0 24px; color: #2a4b74; }

        /* 底部下载号召 */
        .cta-tun {
            text-align: center;
            margin: 60px 0 40px;
        }
        .btn-tun-download {
            background: #0f2b4b;
            color: white;
            padding: 18px 54px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1.4rem;
            text-decoration: none;
            display: inline-block;
            transition: 0.2s;
            box-shadow: 0 16px 28px -8px #0f2b4b60;
        }
        .btn-tun-download:hover { background: #1e3b63; transform: scale(1.02); }

        footer {
            background: #0b1a2a;
            color: #b0c7de;
            padding: 40px 0 24px;
            margin-top: 40px;
            border-top: 1px solid #1e3347;
        }
        .footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; }
        .footer-copyright {
            text-align: center;
            padding-top: 32px;
            font-size: 0.85rem;
            border-top: 1px solid #1e3347;
            margin-top: 24px;
        }

        @media (max-width: 800px) {
            .table-row { grid-template-columns: 1fr 1fr; }
            .header-row { display: none; }
            .table-cell { padding: 16px; }
            .scene-grid { grid-template-columns: 1fr; }
            .tun-hero h1 { font-size: 2.2rem; }
            .header-flex { flex-direction: column; gap: 12px; }
            .nav-links { justify-content: center; }
        }