/* 全局重置 + 创意风格 — 遗留系统质感 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f5f7fa;
            color: #0b1e33;
            line-height: 1.5;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* 导航 — 与首页统一 */
        header {
            background: rgba(255,255,255,0.94);
            backdrop-filter: blur(12px);
            box-shadow: 0 2px 12px rgba(0,0,0,0.02);
            position: sticky;
            top: 0;
            z-index: 50;
            border-bottom: 1px solid #e2eaf2;
        }
        .header-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 14px 0;
        }
        .logo-area h1 {
            font-size: 1.8rem;
            font-weight: 750;
            background: linear-gradient(145deg, #0f2b4b, #2563eb);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            letter-spacing: -0.4px;
        }
        .logo-area p {
            font-size: 0.75rem;
            color: #54708f;
            margin-top: 4px;
        }
        .nav-links {
            display: flex;
            gap: 1.8rem;
            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;
        }

        /* 页面标题区 — 遗留系统警告风格 */
        .legacy-hero {
            margin: 48px 0 32px;
            text-align: center;
        }
        .legacy-badge {
            background: #b45309;
            color: white;
            padding: 8px 28px;
            border-radius: 60px;
            font-weight: 700;
            letter-spacing: 0.5px;
            display: inline-block;
            margin-bottom: 20px;
            border: 1px solid #fbbf24;
        }
        .legacy-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            background: linear-gradient(135deg, #4b3a1e, #b45309);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
        }
        .sub-warning {
            font-size: 1.2rem;
            color: #92400e;
            margin-top: 12px;
        }

        /* 状态声明卡片 */
        .status-panel {
            background: #fefce8;
            border-left: 8px solid #eab308;
            border-radius: 40px;
            padding: 28px 36px;
            margin: 30px 0;
            border: 1px solid #fde68a;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }
        .status-text h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #854d0e;
        }
        .status-text p {
            color: #a16207;
            font-size: 1.1rem;
        }
        .migrate-now {
            background: #1e3b63;
            color: white;
            padding: 14px 32px;
            border-radius: 60px;
            font-weight: 700;
            text-decoration: none;
            transition: 0.15s;
        }

        /* 风险提示系统 三色卡片 */
        .risk-triad {
            display: grid;
            grid-template-columns: repeat(3,1fr);
            gap: 24px;
            margin: 40px 0;
        }
        .risk-item {
            border-radius: 36px;
            padding: 28px 22px;
            background: white;
            box-shadow: 0 15px 25px -10px rgba(0,0,0,0.02);
            border: 1px solid #eef2f8;
        }
        .risk-red {
            border-top: 8px solid #dc2626;
        }
        .risk-yellow {
            border-top: 8px solid #f59e0b;
        }
        .risk-green {
            border-top: 8px solid #10b981;
        }
        .risk-icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
        }
        .risk-item h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        /* CFW 核心操作 (轻教程) */
        .cfw-ops {
            background: white;
            border-radius: 48px;
            padding: 36px 40px;
            margin: 40px 0;
            border: 1px solid #d9e6ff;
        }
        .ops-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 32px;
        }
        .export-steps {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }
        .step-block {
            flex: 1;
            min-width: 200px;
            background: #f8fbfe;
            border-radius: 30px;
            padding: 24px;
        }
        .step-num {
            background: #94a3b8;
            color: white;
            width: 36px;
            height: 36px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            margin-bottom: 20px;
        }

        /* 迁移流程图 */
        .migration-flow {
            background: #eef4ff;
            border-radius: 56px;
            padding: 48px 40px;
            margin: 50px 0;
        }
        .flow-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            flex-wrap: wrap;
        }
        .flow-node {
            background: white;
            padding: 18px 30px;
            border-radius: 60px;
            font-weight: 700;
            box-shadow: 0 8px 12px rgba(0,0,0,0.02);
        }

        /* 号召下载 */
        .cta-cfw {
            background: #0b1e2e;
            border-radius: 60px;
            padding: 52px 48px;
            margin: 60px 0 40px;
            color: white;
            text-align: center;
        }
        .cta-cfw h3 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .btn-download-big {
            background: white;
            color: #0b1e2e;
            padding: 18px 54px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1.3rem;
            text-decoration: none;
            display: inline-block;
            margin-top: 20px;
            transition: 0.2s;
            cursor: pointer;
            border: none;
        }

        /* 底部 */
        footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 40px 0 24px;
            margin-top: 20px;
            border-top: 1px solid #1e293b;
        }
        .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 #1e293b;
            margin-top: 24px;
        }

        @media (max-width: 700px) {
            .risk-triad { grid-template-columns: 1fr; }
            .legacy-hero h1 { font-size: 2rem; }
            .status-panel { flex-direction: column; gap: 20px; text-align: center; }
        }