:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif;color:#172033;background:#f4f6fa;color-scheme:light;--card:#fff;--border:#dbe1ea;--muted:#69758b;--input:#fff;--accent:#2563eb}*{box-sizing:border-box}body{margin:0;min-height:100svh;display:grid;place-items:center;padding:32px 20px;background:radial-gradient(ellipse at 50% 0%,#e8eefc,transparent 65%)}.card{width:100%;max-width:420px;background:var(--card);border:1px solid var(--border);border-radius:20px;padding:36px;box-shadow:0 12px 48px #17203308}.brand{display:flex;align-items:center;gap:10px;font-size:12px;font-weight:750;letter-spacing:1.8px;color:var(--muted);margin-bottom:28px}.mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:#2563eb;color:#fff;font-size:24px;letter-spacing:0}h1{margin:0 0 10px;font-size:28px;letter-spacing:-.7px}.intro{margin:0 0 30px;color:var(--muted);font-size:14px;line-height:1.6}label{display:block;font-size:14px;font-weight:600;margin:0 0 9px}input{width:100%;height:48px;border:1px solid var(--border);border-radius:10px;padding:0 13px;background:var(--input);color:inherit;font:inherit;font-size:16px;outline:none}input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #2563eb1c}#username{margin-bottom:22px}.password-field{position:relative}.password-field input{padding-right:65px}.password-field button{position:absolute;right:3px;top:3px;min-width:56px;height:42px;background:transparent;border:0;border-radius:8px;color:var(--muted);font:inherit;font-size:13px;cursor:pointer}button:focus-visible{outline:3px solid #93b4ff;outline-offset:2px}#error{font-size:13px;line-height:1.6;color:#c13344;min-height:21px;margin:12px 0}#submit{width:100%;min-height:48px;background:var(--accent);color:#fff;border:0;border-radius:10px;font:inherit;font-size:15px;font-weight:650;cursor:pointer}#submit:disabled{opacity:.6;cursor:wait}.note{display:flex;justify-content:center;gap:6px;color:var(--muted);font-size:12px;padding-top:24px}footer{font-size:11px;line-height:1.7;text-align:center;color:var(--muted);margin-top:10px}@media(max-width:480px){body{padding:24px 16px}.card{padding:28px 24px;border-radius:16px}h1{font-size:26px}}@media(max-width:350px){.card{padding:26px 20px}.intro{font-size:13px}}@media(prefers-color-scheme:dark){:root{color:#e7edf9;background:#0e1420;color-scheme:dark;--card:#151e2c;--border:#2d394e;--muted:#a0aec3;--input:#111a28;--accent:#3b78f4}body{background:radial-gradient(ellipse at 50% 0%,#172c4d,transparent 65%)}#error{color:#ff9ba7}}