:root {
            --primary-blue: #2563eb;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: 'Inter', sans-serif;
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        header {
            padding: 24px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .container { max-width: 760px; margin: 0 auto; padding: 0 20px; }
        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-blue);
            text-decoration: none;
        }
        main { padding: 48px 0 80px; }
        h1 { font-size: 32px; margin-bottom: 8px; letter-spacing: -0.5px; }
        .updated { color: var(--text-muted); font-size: 14px; margin-bottom: 32px; font-style: italic; }
        h2 { font-size: 20px; margin-top: 36px; margin-bottom: 12px; color: var(--primary-blue); }
        p { margin-bottom: 14px; color: var(--text-main); }
        ul { margin: 0 0 14px 22px; }
        li { margin-bottom: 8px; }
        a { color: var(--primary-blue); }
        .back-link { display: inline-block; margin-bottom: 24px; font-size: 14px; }
        footer {
            border-top: 1px solid var(--border-color);
            padding: 30px 0;
            text-align: center;
            color: var(--text-muted);
            font-size: 13px;
        }
        footer a { color: var(--text-muted); margin: 0 8px; text-decoration: none; }
        footer a:hover { color: var(--text-main); }