* { margin:0; padding:0; box-sizing:border-box; }
        body {
            font-family: -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: #f5f8fe;
            color: #1a2634;
            line-height: 1.7;
        }
        .container { max-width: 80%; margin:0 auto; padding:0 24px; }
        a { text-decoration:none; color:inherit; }
        img { display:block; max-width:100%; }

        .btn {
            display: inline-block;
            padding: 12px 34px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: 0.25s;
        }
        .btn-primary {
            background: #2563eb;
            color: #fff;
            box-shadow: 0 4px 16px rgba(37,99,235,0.2);
        }
        .btn-primary:hover { background: #1d4ed8; transform: translateY(-2px); }
        .btn-outline {
            background: transparent;
            color: #2563eb;
            border: 2px solid #2563eb;
        }
        .btn-outline:hover { background: #2563eb; color:#fff; }
        .btn-sm { padding: 8px 22px; font-size: 0.85rem; }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: #0a1929;
            margin-bottom: 8px;
        }
        .section-sub {
            color: #5a6e87;
            font-size: 1.05rem;
        }
        .text-center { text-align: center; }


        .page-hero {
            padding: 50px 0 40px;
            background: #ffffff;
            border-bottom: 1px solid #e9edf4;
        }
        .page-hero h1 { font-size: 2.6rem; font-weight: 800; color: #0a1929; }
        .page-hero p { color: #475569; font-size: 1.05rem; max-width: 600px; margin-top: 6px; }

        .faq-section {
            padding: 50px 0;
            background: #f8faff;
        }
        .faq-section:nth-child(even) { background: #ffffff; }

        .faq-category {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 30px;
        }
        .faq-category a {
            background: #eef2f8;
            padding: 6px 20px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #475569;
            transition: 0.2s;
        }
        .faq-category a:hover,
        .faq-category a.active { background: #2563eb; color:#fff; }

        .faq-list {
            display:flex;
            flex-direction:column;
            gap:10px;
            max-width: 900px;
            margin:0 auto;
        }
        .faq-item {
            border:1px solid #eef2f8;
            border-radius:14px;
            padding:16px 24px;
            background:#ffffff;
            transition:0.2s;
        }
        .faq-item:hover { border-color:#2563eb; background:#fafcff; }
        .faq-item .q { font-weight:600; display:flex; align-items:center; gap:10px; font-size:1rem; cursor:pointer; }
        .faq-item .q i { color:#2563eb; }
        .faq-item .a { padding-left:28px; color:#475569; font-size:0.95rem; margin-top:4px; line-height:1.8; }


        @media (max-width:992px) {
            .container { max-width: 95%; }
            .footer-grid { grid-template-columns:1fr 1fr; }
        }
        @media (max-width:768px) {
            .container { max-width: 100%; padding:0 16px; }
            .page-hero h1 { font-size:2rem; }
            .nav-links { gap:4px 12px; }
            .nav-links a { font-size:0.82rem; }
            .footer-grid { grid-template-columns:1fr; text-align:center; }
            .footer .brand p { max-width:100%; }
            .footer-bottom { flex-direction:column; text-align:center; gap:6px; }
            .section-title { font-size:1.8rem; }
            .faq-category { justify-content:center; }
        }
        @media (max-width:480px) {
            .container { padding:0 12px; }
            .page-hero h1 { font-size:1.6rem; }
        }
        .faq-section, .faq-section h2 { scroll-margin-top:96px; }