:root{--bg:#f7f8fc;--card:#fff;--text:#111827;--muted:#64748b;--line:#e2e8f0;--accent:#4f46e5;--accent2:#312e81;--soft:#eef2ff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.55}
a{color:var(--accent2)}.wrap{max-width:1160px;margin:auto;padding:0 20px}header{background:linear-gradient(135deg,#111827,#312e81);color:#fff;padding:30px 0 34px}.brand{font-size:30px;font-weight:900}.tag{margin-top:4px;color:#dbeafe}
nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.navin{display:flex;gap:8px;overflow:auto;padding:10px 20px}.navin a{white-space:nowrap;border:1px solid var(--line);border-radius:999px;padding:7px 13px;text-decoration:none;color:var(--text);font-size:14px}.navin a:hover{background:var(--soft)}
main{padding:28px 0 70px}.ad{border:1px dashed #cbd5e1;color:#94a3b8;text-align:center;border-radius:12px;padding:15px;margin-bottom:24px;font-size:12px}
h1{line-height:1.15;font-size:clamp(28px,4vw,42px);margin:0 0 10px}h2{margin-top:30px}.lead{font-size:18px;color:var(--muted);max-width:800px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(235px,1fr));gap:15px}.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:0 4px 15px #0f172a08}.card h2{margin:0 0 7px;font-size:18px}.card p{margin:0;color:var(--muted);font-size:14px}.card .link{display:block;margin-top:14px;text-align:center;padding:10px;border:1px solid #c7d2fe;border-radius:9px;text-decoration:none;font-weight:800;color:var(--accent2)}
.box{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;max-width:820px;margin:0 auto}.help{color:var(--muted)}.row{display:flex;gap:10px;flex-wrap:wrap}.row>*{flex:1;min-width:130px}
input,select,textarea{width:100%;padding:12px;border:1px solid #cbd5e1;border-radius:10px;font:inherit;background:#fff}.btn{display:inline-block;background:var(--accent);color:white;border:0;border-radius:10px;padding:12px 18px;font-weight:850;cursor:pointer;margin-top:12px}.result{margin-top:16px;padding:17px;background:#f5f7ff;border-radius:12px;white-space:pre-wrap;font-weight:700;min-height:48px}
.prose{max-width:820px;margin:auto;background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px}.back{display:inline-block;margin-bottom:18px;font-weight:800}footer{background:#111827;color:#cbd5e1;padding:38px 0}.footgrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}footer h3{color:white;margin-top:0}footer a{display:block;text-decoration:none;margin:7px 0;color:#cbd5e1}.legal{font-size:12px;color:#94a3b8;margin-top:28px}@media(max-width:650px){.footgrid{grid-template-columns:1fr}.brand{font-size:25px}.box,.prose{padding:20px}}