:root{--bg:#e4eaeb;--card:#f0f4f4;--line:#cdd7d9;--fg:#0f1a1c;--muted:#53656a;--brand:#08848e;--brand-hover:#066d75;--accent:#08848e}
@media (prefers-color-scheme:dark){:root{--bg:#0a0d0e;--card:#121819;--line:#223033;--fg:#eef5f6;--muted:#93a6aa;--brand:#0d949e;--brand-hover:#0fa9b4;--accent:#7fe6ec}}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
body{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;padding:24px 16px;
  background:var(--bg);color:var(--fg);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.card{width:100%;max-width:560px;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:40px 32px;text-align:center;
  box-shadow:0 10px 40px rgba(0,0,0,.08)}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--fg);text-decoration:none;font-weight:800;font-size:20px}
.mark{width:36px;height:36px}
.eyebrow{margin:32px 0 6px;color:var(--accent);font-weight:600;font-size:13px;letter-spacing:.08em;text-transform:uppercase}
h1{margin:0;font-size:clamp(26px,6vw,40px);line-height:1.15;font-weight:800;overflow-wrap:break-word}
.lead{margin:14px auto 0;max-width:420px;color:var(--muted)}
.actions{display:flex;flex-direction:column;align-items:center;gap:14px;margin-top:30px}
.btn{display:inline-block;background:var(--brand);color:#fff;text-decoration:none;font-weight:600;padding:12px 22px;border-radius:12px}
.btn:hover{background:var(--brand-hover)}
.link{color:var(--accent);text-decoration:none;font-size:14px;font-weight:500}
.link:hover{text-decoration:underline}
footer{color:var(--muted);font-size:13px}
footer a{color:inherit}
.tags{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:26px 0 0;padding:0;list-style:none}
.tags li{border:1px solid var(--line);border-radius:999px;padding:5px 12px;font-size:13px;color:var(--muted)}