* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
            color: #333;
            background: #eeeeee url('/static/dh/images/back.png') no-repeat top center;
            background-size: 100% auto;
            min-height: 100vh;
            padding-bottom: 40px;
        }
        a { text-decoration: none; color: inherit; }
        .wrap { width: 900px; max-width: calc(100% - 24px); margin: 0 auto; }
        .navia {
            height: 110px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
            z-index: 50;
            gap: 16px;
        }
        .navia-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
        .logo-fx {
            height: 58px; width: 58px; object-fit: contain; display: block;
            background: rgba(0,0,0,.55); border-radius: 50%; padding: 4px;
            box-shadow: 0 4px 14px rgba(0,0,0,.25); flex-shrink: 0;
        }
        .logo-font { height: 52px; width: auto; display: block; filter: drop-shadow(0 2px 3px rgba(0,0,0,.35)); }
        .nav-toggle {
            display: none; width: 44px; height: 44px; border-radius: 12px;
            border: 1px solid rgba(0, 252, 255, .45); background: rgba(0, 30, 70, .4);
            backdrop-filter: blur(8px); cursor: pointer; align-items: center; justify-content: center;
            flex-direction: column; gap: 5px; padding: 0; flex-shrink: 0;
        }
        .nav-toggle span {
            display: block; width: 18px; height: 2px; border-radius: 2px; background: #fff;
            transition: transform .2s ease, opacity .2s ease;
        }
        .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
        .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
        .site-nav {
            display: flex; align-items: center; gap: 4px; padding: 5px; border-radius: 999px;
            background: rgba(4, 22, 48, .42); border: 1px solid rgba(0, 210, 255, .35);
            box-shadow: 0 8px 24px rgba(0, 20, 50, .2); backdrop-filter: blur(10px);
        }
        .nav-link {
            display: inline-flex; align-items: center; justify-content: center;
            min-height: 38px; padding: 0 16px; border-radius: 999px;
            color: rgba(255,255,255,.92); font-size: 14px; font-weight: 700;
            letter-spacing: .2px; transition: background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
            white-space: nowrap;
        }
        .nav-link:hover { background: rgba(0, 210, 255, .18); color: #fff; }
        .nav-link.active {
            background: linear-gradient(180deg, #3aa0ff, #1f6fd6); color: #fff;
            box-shadow: 0 6px 14px rgba(31, 111, 214, .35);
        }
        .nav-link.accent {
            background: linear-gradient(180deg, #ffe27a, #f0b429); color: #163f74;
            box-shadow: 0 6px 14px rgba(240, 180, 41, .28);
        }
        .nav-link.accent:hover { transform: translateY(-1px); color: #163f74; }
        .card {
            background: #fff;
            border: 1px solid #ddd;
            border-radius: 6px;
            padding: 32px 28px;
            margin-bottom: 16px;
            box-shadow: 0 4px 16px rgba(0,0,0,0.04);
        }
        .card h2 {
            color: #2161b3;
            font-size: 20px;
            margin-bottom: 14px;
            padding-bottom: 12px;
            border-bottom: 1px solid #eee;
        }
        .card .content, .card p {
            font-size: 15px;
            line-height: 1.9;
            color: #555;
            white-space: pre-wrap;
        }
        .contact-item {
            display: flex;
            gap: 10px;
            margin-top: 10px;
            font-size: 15px;
            color: #555;
        }
        .contact-item strong { color: #39a7fc; min-width: 90px; }
        .footer {
            margin-top: 24px;
            text-align: center;
            color: #888;
            font-size: 13px;
            padding: 16px 0;
        }
        .footer a { color: #39a7fc; margin: 0 8px; }
        @media (max-width: 860px) {
            .nav-toggle { display: inline-flex; }
            .site-nav {
                display: none; position: absolute; top: calc(100% - 8px); right: 0; left: auto;
                width: min(280px, calc(100vw - 24px)); flex-direction: column; align-items: stretch;
                gap: 6px; padding: 10px; border-radius: 16px; background: rgba(8, 24, 52, .94);
                border: 1px solid rgba(0, 210, 255, .35); box-shadow: 0 16px 36px rgba(0, 12, 30, .45);
            }
            .site-nav.is-open { display: flex; }
            .nav-link {
                justify-content: flex-start; min-height: 44px; padding: 0 14px;
                border-radius: 12px; width: 100%;
            }
        }
        @media (max-width: 640px) {
            .navia { height: auto; padding: 16px 0 12px; gap: 12px; }
            .logo-fx { height: 42px; width: 42px; }
            .logo-font { height: 34px; }
        }