:root{--bg:#1a1a2e;--card:#ffffff;--accent:#1a6fd4;--accent-dark:#0d4f9e;--text:#222;--muted:#6b7280;--ok:#15803d;--err:#b91c1c}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,sans-serif;background:linear-gradient(160deg,#1a1a2e,#16213e);color:var(--text);min-height:100vh}.wrap{max-width:480px;margin:0 auto;padding:24px 16px 48px}.brand{text-align:center;color:#fff;margin:16px 0 24px}.brand h1{font-size:1.35rem;margin:8px 0 4px}.brand p{margin:0;color:#b4c8dc;font-size:.9rem}.panel{background:var(--card);border-radius:12px;padding:20px;box-shadow:0 8px 30px rgba(0,0,0,.25)}label{display:block;font-size:.85rem;font-weight:600;margin:14px 0 6px}input{width:100%;padding:12px;font-size:1rem;border:1px solid #d1d5db;border-radius:8px}input:focus{outline:none;border-color:var(--accent)}button{width:100%;margin-top:20px;padding:13px;font-size:1rem;font-weight:600;color:#fff;background:var(--accent);border:none;border-radius:8px;cursor:pointer}button:hover{background:var(--accent-dark)}button:disabled{background:#9ca3af;cursor:not-allowed}.hint{font-size:.8rem;color:var(--muted);line-height:1.45}.hint,.msg{margin-top:16px}.msg{padding:12px;border-radius:8px;font-size:.9rem}.msg.err{background:#fee2e2;color:var(--err)}.pass{border:1px solid #e5e7eb;border-radius:10px;padding:16px;margin-bottom:14px}.pass h3{margin:0 0 4px;font-size:1.05rem}.pass .counter{font-size:.8rem;color:var(--muted);margin-bottom:10px}.pass button{margin-top:0}.pass .locked{font-size:.8rem;color:var(--err);margin-top:6px}.back{background:none;color:#b4c8dc;border:none;width:auto;margin:18px auto 0;display:block;font-size:.85rem;cursor:pointer}