:root{color-scheme:light dark;--bg: #ffffff;--card-bg: #ffffff;--border: #e5e7eb;--text: #111827;--muted: #374151;--muted2: #6b7280;--btn-bg: #ffffff;--btn-text: #111827;--btn-border: #d1d5db;--btn-active-bg: #111827;--btn-active-text: #ffffff;--btn-active-border: #111827}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.card{padding:2em}#app{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}@media(prefers-color-scheme:dark){:root{--bg: #121212;--card-bg: #0f172a;--border: #243045;--text: #e5e7eb;--muted: #cbd5e1;--muted2: #94a3b8;--btn-bg: #111c33;--btn-text: #e5e7eb;--btn-border: #2a3a55;--btn-active-bg: #e5e7eb;--btn-active-text: #0b1220;--btn-active-border: #e5e7eb}}.wrap{min-height:100vh;display:grid;place-items:center;padding:24px;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}.card{max-width:520px;width:100%;background:var(--card-bg);border:1px solid var(--border);border-radius:18px;padding:28px;text-align:center}h1{font-size:28px;margin:0 0 12px}p{margin:0 0 12px;color:var(--muted)}.lang{display:flex;justify-content:center;gap:8px;margin:18px 0}button{padding:8px 12px;border-radius:999px;border:1px solid var(--btn-border);background:var(--btn-bg);color:var(--btn-text);cursor:pointer}button.active{font-weight:700;background:var(--btn-active-bg);color:var(--btn-active-text);border-color:var(--btn-active-border)}.hint{margin-top:12px;font-size:14px;color:var(--muted2)}