:root{color-scheme:dark;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#f3f6fa;background:#06090e;font-synthesis:none;--panel:#0b111a;--border:#1b2a39;--muted:#8799aa;--blue:#1fa7ff;--cyan:#58d7ff}
*{box-sizing:border-box}
body{margin:0;min-height:100svh;background:#06090e;display:flex;flex-direction:column;line-height:1.55}
header{width:min(1120px,100%);height:78px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--border)}
.brand{display:inline-flex;align-items:center}
.brand img{display:block;width:108px;height:auto}
nav{display:flex;align-items:center;gap:26px}
nav a{color:#a8b6c4;font-size:14px;font-weight:650;text-decoration:none;white-space:nowrap}
nav a:hover{color:#fff}
main{flex:1;display:grid;place-content:center;padding:48px 20px}
.card{width:min(440px,calc(100vw - 40px));padding:38px 34px 30px;background:var(--panel);border:1px solid var(--border);border-radius:12px;text-align:center}
h1{font-size:32px;line-height:1.15;letter-spacing:-.04em;margin:0 0 14px;color:var(--cyan)}
.description{font-size:16px;color:var(--muted);margin:0 auto 26px;max-width:320px}
.button{min-height:52px;border-radius:9px;display:flex;align-items:center;justify-content:center;gap:12px;text-decoration:none;font-size:15px;font-weight:750;transition:background .18s,transform .18s}
.button:hover{transform:translateY(-2px)}
.button:focus-visible,.brand:focus-visible,nav a:focus-visible{outline:2px solid var(--cyan);outline-offset:4px}
.primary{color:#fff;background:var(--blue)}
.primary:hover{background:#42b6ff}
.primary[aria-disabled="true"]{opacity:.45;cursor:default;transform:none}
.secondary{margin-top:10px;background:#0a1018;border:1px solid #2a3a4a;color:#f3f6fa}
.secondary:hover{background:#101a25}
.status{min-height:39px;margin:20px 0 0;font-size:13px;color:var(--muted);line-height:1.6}
@media(max-width:520px){header{height:68px;padding:0 18px;gap:10px}.brand img{width:90px}nav{gap:12px}nav a{font-size:12px}main{padding:32px 18px}.card{width:min(440px,calc(100vw - 36px));padding:30px 24px}h1{font-size:28px}}
@media(prefers-reduced-motion:reduce){.button{transition:none}}