/* 蔚蓝·工具决策风格 — 与首页蓝色基调一致 */
        *{margin:0;padding:0;box-sizing:border-box;}
        body{
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background:#f5faff; color:#1a2a3a; line-height:1.5;
        }
        @import url('https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,400;14..32,500;14..32,600;14..32,700&display=swap');
        .container{max-width:1280px; margin:0 auto; padding:0 24px;}
        
        /* 导航 — 蓝色基调 (与首页完全一致) */
        .navbar{
            background:rgba(255,255,255,0.96); box-shadow:0 2px 12px rgba(0,70,120,0.04);
            position:sticky; top:0; z-index:50; border-bottom:1px solid #c2d9f0;
            backdrop-filter: blur(4px);
        }
        .nav-flex{display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; padding:0.7rem 0;}
        .logo-area{display:flex; align-items:center; gap:10px;}
        .logo-icon{background:#1a73e8; width:38px; height:38px; border-radius:14px; display:flex; align-items:center; justify-content:center; color:white; font-weight:700; font-size:20px; box-shadow:0 4px 8px rgba(26,115,232,0.15);}
        .logo-text{font-size:1.6rem; font-weight:700; color:#0b3b66; letter-spacing:-0.3px;}
        .nav-links{display:flex; gap:22px; align-items:center; flex-wrap:wrap;}
        .nav-links a{text-decoration:none; font-weight:550; color:#1e4460; transition:all 0.15s; font-size:0.98rem; padding:6px 0; border-bottom:2px solid transparent;}
        .nav-links a:hover, .nav-links a.active{color:#1a73e8; border-bottom-color:#1a73e8;}
        
        /* 页面头部 */
        .page-header{padding:2.5rem 0 1.5rem; text-align:center; background:linear-gradient(105deg, #f2f8ff 0%, #ffffff 100%);}
        .page-header h1{font-size:2.8rem; font-weight:800; color:#0a3360; margin-bottom:0.5rem;}
        .page-header h1 i{color:#1a73e8; margin-right:12px;}
        
        /* 版本推荐卡片 (决策系统) */
        .section-title{font-size:2rem; font-weight:700; color:#0a3360; margin:2rem 0 1.2rem;}
        .rec-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin:1.5rem 0;}
        .rec-card{background:white; border-radius:28px; padding:2rem 1.8rem; border:1px solid #d0e1f5; transition:0.2s; text-decoration:none; color:inherit; box-shadow:0 8px 18px rgba(0,0,0,0.02);}
        .rec-card:hover{border-color:#1a73e8; transform:translateY(-5px); box-shadow:0 20px 30px -10px rgba(26,115,232,0.1);}
        .rec-badge{display:inline-block; padding:4px 16px; border-radius:40px; font-size:0.8rem; font-weight:700; margin-bottom:1.2rem;}
        .badge-stable{background:#1a73e8; color:white;}
        .badge-advanced{background:#e9ecf2; color:#1a4466;}
        .badge-lite{background:#e2edfc; color:#0a3a6b;}
        .rec-card h3{font-size:1.8rem; font-weight:700; margin-bottom:0.4rem; color:#0a3360;}
        .rec-desc{color:#34608a; margin:1rem 0 1.5rem; font-size:0.95rem;}
        .rec-feature{list-style:none; margin-bottom:1.8rem;}
        .rec-feature li{margin-bottom:0.6rem; display:flex; align-items:center; gap:8px; color:#1e4460;}
        .rec-feature i{color:#1a73e8; width:18px;}
        .btn-download{background:#1a73e8; color:white; padding:14px 20px; border-radius:60px; font-weight:700; text-decoration:none; display:block; text-align:center; border:none; box-shadow:0 6px 12px rgba(26,115,232,0.2); transition:0.15s;}
        .btn-download i{margin-right:8px;}
        .btn-download:hover{background:#1557b0; transform:scale(1.01);}
        .btn-outline-light{background:transparent; border:1.5px solid #b7d2f0; color:#1a4466; padding:12px 20px; border-radius:60px; font-weight:600; text-decoration:none; display:inline-block; text-align:center;}
        
        /* 故障指引分支 (条件分支式) */
        .trouble-panel{background:linear-gradient(115deg, #ffffff 0%, #f5faff 100%); border-radius:32px; padding:2.2rem; margin:2.5rem 0; border:1px solid #c2d9f0;}
        .branch-grid{display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-top:1.5rem;}
        .branch-card{background:#ffffffd0; border-radius:24px; padding:1.8rem; border-left:6px solid #1a73e8; box-shadow:0 4px 10px rgba(0,0,0,0.02);}
        .branch-card h4{font-size:1.4rem; margin-bottom:0.8rem; color:#0a3360;}
        .branch-card p{margin-bottom:1.2rem; color:#2b4d6e;}
        .branch-link{color:#1a73e8; font-weight:600; text-decoration:none; display:inline-flex; align-items:center; gap:8px;}
        
        /* 安卓卡片简化 */
        .android-mini{display:flex; align-items:center; background:white; border-radius:24px; padding:1.5rem 2rem; margin:2rem 0; border:1px solid #d0e1f5;}
        .android-mini i{font-size:2.8rem; color:#1a73e8; margin-right:20px;}
        
        /* 安全校验区域 */
        .trust-block{display:flex; flex-wrap:wrap; gap:20px; background:#ecf5fe; border-radius:2rem; padding:2rem; margin:2rem 0;}
        .hash-box{background:white; border-radius:20px; padding:1.4rem; flex:2; border:1px dashed #1a73e8;}
        .hash-box code{background:#f0f5ff; padding:6px 12px; border-radius:14px; font-size:0.9rem;}
        .source-note{flex:1; display:flex; flex-direction:column; justify-content:center;}
        
        /* 底部下载号召 (返回下载) */
        .cta-download{background:#0a3360; border-radius:3rem; padding:2.2rem 2.8rem; margin:2.5rem 0 1rem; color:white; display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap;}
        .cta-btn{background:#f5c542; color:#0a2d4a; padding:16px 38px; border-radius:60px; font-weight:800; text-decoration:none; font-size:1.2rem;}
        
        /* footer 与首页一致 */
        .footer{background:#e2edf7; color:#1b3f60; padding:2.8rem 0; margin-top:3rem; border-top:1px solid #b8cee8;}
        .footer-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:2rem; padding-bottom:2rem; border-bottom:1px solid #b1c6e0;}
        .footer a{color:#1b4a70; text-decoration:none;}
        .footer a:hover{color:#0a3360; text-decoration:underline;}
        .sitemap-row{margin-top:2rem; text-align:center;}
        
        @media (max-width:800px){
            .rec-grid{grid-template-columns:1fr;}
            .branch-grid{grid-template-columns:1fr;}
            .nav-links{gap:16px;}
        }
        .fa-arrow-right{transition:transform 0.2s;}
        .branch-link:hover .fa-arrow-right{transform:translateX(5px);}