:root{color-scheme:dark;--bg:#0b0b0f;--fg:#e7e7ea;--muted:#8a8a93;--accent:#5b8def;--border:#1f1f27;--card:#111118}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased}.container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.card{width:100%;max-width:420px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:32px 28px;box-shadow:0 4px 24px rgba(0,0,0,.3)}h1{margin:0 0 8px;font-size:22px;font-weight:600;letter-spacing:-.01em}.subtitle{margin:0 0 16px;font-size:14px}.hint,.subtitle{color:var(--muted)}.hint{margin:0;font-size:13px;line-height:1.5}