:root {
            --bg: #07111f;
            --panel: rgba(12, 24, 42, 0.88);
            --text: #eef4ff;
            --muted: #a9b8cf;
            --line: rgba(148, 163, 184, 0.16);
            --primary: #69a7ff;
            --primary-strong: #3b82f6;
            --shadow: 0 18px 60px rgba(2, 8, 23, 0.45);
            --radius: 24px;
            --max: 980px;
        }
        * { box-sizing: border-box; }
        html, body { margin: 0; padding: 0; }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--text);
            background:
                radial-gradient(circle at top left, rgba(59,130,246,.20), transparent 32%),
                radial-gradient(circle at top right, rgba(20,184,166,.12), transparent 26%),
                linear-gradient(180deg, #07111f 0%, #0a1526 45%, #08111d 100%);
            min-height: 100vh;
            line-height: 1.7;
        }
        a { color: inherit; }
        .top-nav {
            position: sticky; top: 0; z-index: 100;
            backdrop-filter: blur(14px);
            background: rgba(7, 17, 31, 0.72);
            border-bottom: 1px solid rgba(255,255,255,.06);
        }
        .nav-container {
            max-width: 1180px; margin: 0 auto; padding: 14px 20px;
            display: flex; align-items: center; justify-content: space-between; gap: 20px;
        }
        .nav-logo { text-decoration: none; font-weight: 800; color: #fff; }
        .nav-links { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
        .nav-links a { text-decoration: none; color: var(--muted); font-weight: 500; }
        .nav-links a:hover, .nav-links a.active { color: #fff; }
        .mobile-menu-toggle { display: none; background: none; border: 0; color: #fff; font-size: 24px; }
        .container {
            max-width: var(--max);
            margin: 0 auto;
            padding: 56px 20px 80px;
        }
        .hero-card, .card {
            background: linear-gradient(180deg, rgba(17, 31, 53, 0.92), rgba(10, 21, 37, 0.94));
            border: 1px solid rgba(255,255,255,.08);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .hero-card {
            padding: 36px 32px;
            text-align: left;
        }
        .eyebrow {
            display: inline-flex;
            padding: 8px 12px;
            border-radius: 999px;
            background: rgba(105,167,255,.14);
            color: #d9e8ff;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .04em;
            text-transform: uppercase;
        }
        h1 {
            margin: 18px 0 12px;
            font-size: clamp(34px, 4vw, 52px);
            line-height: 1.06;
            font-weight: 800;
            letter-spacing: -0.03em;
            color: #fff;
        }
        .hero-desc { margin: 0; color: var(--muted); font-size: 16px; }
        .hero-actions {
            display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px;
        }
        .btn {
            display: inline-flex; align-items: center; justify-content: center;
            min-height: 48px; padding: 0 18px; border-radius: 14px;
            text-decoration: none; font-weight: 700; transition: .2s ease;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-strong));
            color: #fff;
            box-shadow: 0 10px 28px rgba(59,130,246,.32);
        }
        .btn-secondary {
            border: 1px solid rgba(255,255,255,.12);
            background: rgba(255,255,255,.04);
            color: #d9e8ff;
        }
        .btn:hover { transform: translateY(-1px); }
        .grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 18px;
            margin-top: 22px;
        }
        .card { padding: 24px 22px; }
        .card h2 { margin: 0 0 10px; font-size: 22px; color: #fff; }
        .card p { margin: 0; color: var(--muted); }
        .link-list {
            display: grid;
            gap: 12px;
            margin-top: 16px;
        }
        .link-item {
            display: block;
            padding: 14px 16px;
            border-radius: 16px;
            text-decoration: none;
            background: rgba(255,255,255,.04);
            border: 1px solid rgba(255,255,255,.06);
            color: #eef4ff;
            font-weight: 600;
        }
        .link-item small {
            display: block;
            margin-top: 4px;
            color: var(--muted);
            font-weight: 500;
        }
        .notice {
            margin-top: 18px;
            padding: 14px 16px;
            border-radius: 16px;
            background: rgba(255,255,255,.04);
            border: 1px solid rgba(255,255,255,.06);
            color: var(--muted);
        }
        @media (max-width: 720px) {
            .nav-links { display: none; }
            .mobile-menu-toggle { display: inline-flex; }
            .grid { grid-template-columns: 1fr; }
            .hero-card, .card { border-radius: 22px; }
            .hero-card { padding: 26px 20px; }
        }


:focus-visible {
  outline: 2px solid #4F46E5;
  outline-offset: 2px;
}
button:focus-visible, a:focus-visible {
  outline-offset: 4px;
}


@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}