:root{font-family:system-ui,-apple-system,'Segoe UI',sans-serif;color-scheme:dark;--bg:#101820;--card:#1a2933;--border:#38505d;--text:#f3f7f9;--muted:#aec0cb;--a:#62d5af}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}main{max-width:760px;margin:0 auto;padding:20px 16px 100px}header{border-bottom:1px solid var(--border);padding:14px max(16px,calc((100vw - 760px)/2));display:flex;gap:15px;align-items:center;justify-content:space-between}header a{color:var(--a);text-decoration:none;font-weight:650}nav{display:flex;gap:13px;flex-wrap:wrap}h1{font-size:1.6rem}h2{font-size:1.2rem;margin-top:26px}a{color:var(--a)}.card{background:var(--card);border:1px solid var(--border);padding:17px;border-radius:16px;margin:12px 0}.item{display:flex;justify-content:space-between;gap:10px;align-items:center}.muted{color:var(--muted);font-size:.92rem}form{display:grid;gap:13px}label{display:grid;gap:6px;font-weight:600}input,textarea,select,button{font:inherit;padding:12px;border-radius:10px;border:1px solid var(--border);background:#111e28;color:var(--text);min-width:0;width:100%}textarea{min-height:65px}button,.btn{background:#267b65;color:#fff;border:0;cursor:pointer;font-weight:700;text-decoration:none;text-align:center;padding:12px 16px;border-radius:10px;display:inline-block}.btn.secondary{background:#344a56}.stack{display:grid;gap:10px}.notice{background:#253a46;padding:12px;border-radius:12px}.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}small{color:var(--muted)}.danger{color:#ffb7ad}@media(max-width:480px){.row{grid-template-columns:1fr}header{align-items:flex-start;flex-direction:column}}