:root {
            --bg: #f5f7fb;
            --card: #ffffff;
            --text: #0f172a;
            --muted: #475569;
            --line: #dbe3ee;
            --accent: #0f766e;
        }

        * {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            font-family: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            color: var(--text);
            background: linear-gradient(180deg, #edf5ff 0%, var(--bg) 40%);
            line-height: 1.6;
        }

        .container {
            max-width: 980px;
            margin: 0 auto;
            padding: 28px 18px 56px;
        }

        .hero, .card {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 20px;
        }

        .card {
            margin-top: 14px;
        }

        h1 {
            margin: 0 0 10px;
            font-size: clamp(1.6rem, 4vw, 2.25rem);
            line-height: 1.2;
        }

        h2 {
            margin: 0 0 10px;
            font-size: 1.2rem;
        }

        p {
            margin: 0;
            color: var(--muted);
        }

        ul {
            margin: 0;
            padding-left: 20px;
            color: var(--muted);
            display: grid;
            gap: 6px;
        }

        .links {
            margin: 0;
            padding-left: 18px;
            display: grid;
            gap: 6px;
        }

        a {
            color: var(--accent);
        }

        .nav-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 10px;
        }

        .nav-button {
            display: block;
            border: 1px solid #9bd3ca;
            border-radius: 12px;
            padding: 12px;
            text-decoration: none;
            color: #0f172a;
            background: linear-gradient(135deg, #f0fdfa 0%, #d1fae5 100%);
            transition: transform 0.2s ease, border-color 0.2s ease;
        }

        .nav-button:hover {
            transform: translateY(-1px);
            border-color: #0f766e;
        }

        .nav-button strong {
            display: block;
            margin-bottom: 4px;
            font-size: 0.98rem;
        }

        .nav-button small {
            color: #334155;
        }