:root{--bg:#0f172a;--card:#ffffff;--ink:#0f172a;--muted:#64748b;--brand:#2563eb;--brand2:#7c3aed;--line:#e2e8f0;--soft:#f1f5f9}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:#f8fafc;line-height:1.6}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
header.site{background:var(--bg);color:#fff;padding:14px 20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
header.site .logo{font-weight:800;font-size:20px;color:#fff}
nav a{color:#cbd5e1;margin-left:16px;font-size:15px}
.hero{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;padding:56px 20px;text-align:center}
.hero h1{font-size:38px;margin:0 0 12px}.hero p{font-size:18px;opacity:.92;max-width:720px;margin:0 auto 20px}
.btn{display:inline-block;background:#fff;color:var(--brand);padding:12px 22px;border-radius:10px;font-weight:700;border:0;cursor:pointer;font-size:16px}
.btn.primary{background:var(--brand);color:#fff}.btn.primary:hover{background:#1d4ed8}
.wrap{max-width:1024px;margin:0 auto;padding:28px 20px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.card h3{margin-top:0}.badge{display:inline-block;background:var(--soft);color:var(--brand);font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:8px}
.tool{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;margin-bottom:24px}
label{font-weight:700;display:block;margin:14px 0 6px}
input,textarea,select{width:100%;padding:11px;border:1px solid #cbd5e1;border-radius:10px;font-size:15px;font-family:inherit}
textarea{min-height:110px}
.out{white-space:pre-wrap;background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:16px;min-height:120px;font-size:15px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media(max-width:720px){.row{grid-template-columns:1fr}.hero h1{font-size:29px}}
footer{background:var(--bg);color:#94a3b8;padding:26px 20px;text-align:center;font-size:14px;margin-top:40px}
.small{color:var(--muted);font-size:14px}.faq h3{margin-bottom:4px}