:root{--bg:#f4f7f8;--surface:#fff;--ink:#16242b;--ink-soft:#50636d;--ink-faint:#8499a3;--line:#e2e9ec;--teal:#0f766e;--teal-soft:#e6f2f0;--indigo:#4f46e5;--amber:#b45309;--amber-soft:#fdf3e7;--red:#b91c1c;--red-soft:#fbeaea;--radius:14px;--shadow:0 1px 2px #10242b0a, 0 8px 24px #10242b0f;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased;margin:0;padding:0;line-height:1.5}a{color:var(--teal)}.wrap{max-width:1100px;margin:0 auto;padding:28px 20px 64px}.masthead{flex-wrap:wrap;align-items:baseline;gap:10px 12px;display:flex}.logo{letter-spacing:-.02em;font-size:22px;font-weight:800}.logo .os{color:var(--teal)}.masthead .tag{color:var(--ink-faint);text-transform:uppercase;letter-spacing:.06em;font-size:13px;font-weight:600}.masthead .topnav-group{align-items:baseline;gap:18px;margin-left:auto;display:flex}.masthead 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