:root{--bg:#0f172a;--panel:#111827;--text:#e5e7eb;--muted:#94a3b8;--accent:#38bdf8;--danger:#f87171;--warning:#fbbf24;--success:#34d399}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 20% 20%,rgba(56,189,248,.1),transparent 25%),radial-gradient(circle at 80% 0,rgba(52,211,153,.12),transparent 30%),var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,sans-serif;min-height:100vh}a{color:inherit;text-decoration:none}button{cursor:pointer}.panel{background:rgba(17,24,39,.85);border:1px solid rgba(148,163,184,.2);border-radius:14px;box-shadow:0 20px 60px rgba(0,0,0,.25);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.stack{display:flex;flex-direction:column;gap:12px}