/* 蔚蓝 · FAQ搜索引擎风格 (与首页一致) */
        *{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 */
        .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;}
        
        .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;}
        .section-title{font-size:2rem; font-weight:700; color:#0a3360; margin:2rem 0 1.2rem;}
        
        /* 搜索框 */
        .search-wrapper{max-width:700px; margin:0 auto 2rem;}
        .search-box{position:relative;}
        .search-box i{position:absolute; left:20px; top:50%; transform:translateY(-50%); color:#7fa3c0; font-size:1.2rem;}
        .search-box input{width:100%; padding:1.2rem 1.2rem 1.2rem 3.5rem; border-radius:60px; border:1.5px solid #c2d9f0; background:white; font-size:1.1rem; outline:none; transition:0.2s; box-shadow:0 6px 12px rgba(0,0,0,0.02);}
        .search-box input:focus{border-color:#1a73e8; box-shadow:0 8px 20px rgba(26,115,232,0.1);}
        
        /* 分类标签 */
        .filter-tabs{display:flex; flex-wrap:wrap; justify-content:center; gap:10px; margin-bottom:2rem;}
        .filter-btn{padding:0.7rem 1.8rem; border-radius:60px; border:1.5px solid #b7d2f0; background:white; font-weight:600; cursor:pointer; transition:0.2s; color:#1e4460;}
        .filter-btn i{margin-right:6px;}
        .filter-btn.active{background:#1a73e8; color:white; border-color:#1a73e8;}
        .filter-btn:hover:not(.active){background:#e3f0ff; border-color:#1a73e8;}
        
        /* 热门问题排行 (创新) */
        .hot-rank{background:white; border-radius:32px; padding:2rem; margin:1.5rem 0 2.5rem; border:1px solid #d0e1f5;}
        .rank-title{font-size:1.5rem; font-weight:700; color:#0a3360; margin-bottom:1.5rem; display:flex; align-items:center; gap:10px;}
        .rank-list{display:grid; grid-template-columns:repeat(2,1fr); gap:12px 24px;}
        .rank-item{display:flex; align-items:center; gap:12px; padding:8px 0; border-bottom:1px dashed #c2d9f0;}
        .rank-num{width:28px; height:28px; background:#e3f0ff; color:#1a73e8; border-radius:12px; display:flex; align-items:center; justify-content:center; font-weight:700; font-size:0.9rem;}
        .rank-item a{text-decoration:none; color:#1b4a70; font-weight:500; flex:1; transition:0.15s;}
        .rank-item a:hover{color:#1a73e8;}
        .hot-badge{background:#f5c542; color:#0a2d4a; font-size:0.7rem; padding:2px 10px; border-radius:30px; margin-left:10px;}
        
        /* FAQ网格 */
        .faq-grid{display:flex; flex-direction:column; gap:16px; margin:2rem 0;}
        .faq-item{background:white; border-radius:24px; border:1px solid #d0e1f5; overflow:hidden; transition:0.2s;}
        .faq-question{padding:1.3rem 2rem; font-weight:600; display:flex; align-items:center; gap:15px; cursor:pointer; background:#fafcff;}
        .faq-question i.fa-question-circle{color:#1a73e8; font-size:1.3rem; width:24px;}
        .faq-question span{flex:1; color:#0a3360;}
        .category-badge{font-size:0.75rem; background:#e3f0ff; color:#1a73e8; padding:4px 14px; border-radius:40px; font-weight:500;}
        .faq-question .fa-chevron-down{margin-left:auto; transition:transform 0.2s; color:#7fa3c0;}
        .faq-answer{display:none; padding:0 2rem 1.8rem 2rem; border-top:1px solid #e0ecf5; background:#ffffff;}
        .faq-answer p{margin:1.2rem 0 0.8rem; color:#1b4a70; line-height:1.6;}
        .solution-link{display:inline-flex; align-items:center; gap:8px; color:#1a73e8; font-weight:600; text-decoration:none; margin-top:0.8rem; padding:8px 0;}
        .solution-link i{font-size:0.9rem;}
        
        .no-result{text-align:center; padding:3rem; color:#5a7a8a; display:none;}
        
        /* 底部号召 */
        .cta-download{background:#0a3360; border-radius:3rem; padding:2.2rem 2.8rem; margin:3rem 0; 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 */
        .footer{background:#e2edf7; color:#1b3f60; padding:2.8rem 0; margin-top:4rem; 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;}
        .sitemap-row{margin-top:2rem; text-align:center;}
        
        @media (max-width:800px){
            .rank-list{grid-template-columns:1fr;}
            .faq-question{padding:1rem 1.2rem;}
        }