:root{--ground: #f4f6f9;--ink: #15202e;--muted: #566575;--line: #dbe1e9;--accent: #2563eb;--danger: #dc2626;--glass-bg: rgba(255, 255, 255, .78);--glass-blur: 20px;--radius: 14px}@media (prefers-color-scheme: dark){:root{--ground: #0d131b;--ink: #e7edf4;--muted: #97a6b7;--line: #26313f;--accent: #5b9bff;--glass-bg: rgba(22, 31, 42, .72)}}*{box-sizing:border-box}body{margin:0;background:var(--ground);color:var(--ink);font:16px/1.6 system-ui,-apple-system,Segoe UI,sans-serif}.app{min-height:100vh;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;gap:14px;padding:12px 20px;border-bottom:1px solid var(--line)}.glass{background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur))}.spacer,.app>main.center{flex:1}.center{display:grid;place-items:center;padding:32px}.muted{color:var(--muted)}.card{background:color-mix(in srgb,var(--ground) 60%,transparent);border:1px solid var(--line);border-radius:var(--radius);padding:28px;width:min(420px,100%);box-shadow:0 12px 32px -16px #0000004d}.card.glass{background:var(--glass-bg)}.card h1{margin:0 0 16px;font-size:1.3rem}form.card label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:14px}form.card input{display:block;width:100%;margin-top:6px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--ground);color:var(--ink);font:inherit}button{font:inherit;cursor:pointer;padding:10px 16px;border-radius:8px;border:0;background:var(--accent);color:#fff}button:disabled{opacity:.6;cursor:default}button.link{background:none;color:var(--accent);padding:4px 8px}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.err{color:var(--danger);font-size:.9rem}.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 18px;font-size:.95rem}.kv dt{color:var(--muted)}.kv dd{margin:0}