:root{color:#102a43;background:#eef3f8;font-family:system-ui,sans-serif}@media (prefers-color-scheme:dark){:root{color:#e5edf6;background:#17212b}}main{max-width:680px;margin:auto;padding:24px}header{align-items:center;gap:14px;display:flex}header img{border-radius:14px;width:58px;height:58px}.card,aside{background:#fff;border-radius:16px;margin:18px 0;padding:20px;box-shadow:0 3px 12px #102a4318}@media (prefers-color-scheme:dark){.card{background:#243240}}button{color:#fff;background:#146cbb;border:0;border-radius:9px;margin:4px;padding:11px 16px;font-weight:700}input{font:inherit;border:1px solid #9aacbd;border-radius:9px;padding:11px}.hint{opacity:.8;font-size:.9rem}