:root{
  --primary:#0066cc;--primary-focus:#0071e3;--on-primary:#fff;--canvas:#fff;--canvas-parchment:#f5f5f7;
  --hairline:#e0e0e0;--ink:#1d1d1f;--ink-muted-80:#333;--ink-muted-48:#7a7a7a;--error:#d45656;
  --error-bg:#fff1f1;--input-border:rgba(0,0,0,.1);--card-shadow:rgba(0,0,0,.08);
  --rounded-lg:18px;--rounded-pill:9999px;
  --font-display:system-ui,-apple-system,BlinkMacSystemFont,"SF Pro Display",Inter,sans-serif;
  --font-text:system-ui,-apple-system,BlinkMacSystemFont,"SF Pro Text",Inter,sans-serif;
}
@media(prefers-color-scheme:dark){
  :root{
    color-scheme:dark;--primary:#5aa9ff;--primary-focus:#7ab9ff;--on-primary:#0b1726;--canvas:#1f1e1d;--canvas-parchment:#161514;
    --hairline:#3a3835;--ink:#ecebe8;--ink-muted-80:#c4c1bc;--ink-muted-48:#8d8982;--error:#ff8a80;
    --error-bg:rgba(198,83,83,.16);--input-border:rgba(255,255,255,.12);--card-shadow:rgba(0,0,0,.45);
  }
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;min-height:100vh;min-height:100dvh;font-family:var(--font-text);background:var(--canvas-parchment);color:var(--ink)}
body{display:flex;flex-direction:column}
.card{width:min(29rem,calc(100% - 32px));margin:auto;background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--rounded-lg);padding:32px;box-shadow:0 18px 70px var(--card-shadow)}
.login-mark{width:52px;height:52px;display:grid;place-items:center;margin:0 0 20px;border-radius:16px;background:var(--canvas-parchment);color:var(--primary)}
.login-mark svg{width:28px;height:28px}
h1{margin:0 0 8px;font-family:var(--font-display);font-size:34px;font-weight:600;line-height:1.35;letter-spacing:-.374px}
.lead{margin:0 0 24px;color:var(--ink-muted-80);font-size:17px;line-height:1.47;letter-spacing:-.374px}
label{display:block;font-size:14px;color:var(--ink);margin:14px 0 8px;letter-spacing:-.224px}
input{width:100%;height:44px;padding:12px 20px;border:1px solid var(--input-border);border-radius:var(--rounded-pill);background:var(--canvas);color:var(--ink);font:inherit;font-size:17px}
input:focus{outline:2px solid var(--primary-focus);outline-offset:2px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:11px 22px;border-radius:var(--rounded-pill);font-size:17px;line-height:1.47;cursor:pointer}
.btn .icon{width:18px;height:18px;flex:0 0 18px}
.btn-primary{margin-top:18px;border:1px solid var(--primary);background:var(--primary);color:var(--on-primary)}
.btn-secondary{border:1px solid var(--primary);background:transparent;color:var(--primary)}
.btn:active{transform:scale(.98)}
.btn:focus-visible{outline:2px solid var(--primary-focus);outline-offset:2px}
.btn[disabled]{border-color:var(--hairline);background:var(--hairline);color:var(--ink-muted-48);cursor:wait;transform:none}
.divider{display:flex;align-items:center;gap:12px;margin:22px 0;color:var(--ink-muted-48);font-size:12px}
.divider::before,.divider::after{content:"";height:1px;flex:1;background:var(--hairline)}
.error{margin:0 0 16px;padding:12px 16px;border-radius:8px;background:var(--error-bg);color:var(--error);font-size:14px;line-height:1.43}
.hint{margin:14px 0 0;color:var(--ink-muted-48);font-size:12px;line-height:1.45;text-align:center}
.spin{width:16px;height:16px;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.spin{animation:none}.btn:active{transform:none}}