:root{--c:#0d9488;--bg:#f8fafc;--tx:#0f172a;--mu:#64748b;--bd:#e2e8f0}
*{box-sizing:border-box}body{margin:0;font:15px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--tx)}
a{color:var(--c);text-decoration:none}a:hover{text-decoration:underline}
header{background:#fff;border-bottom:1px solid var(--bd)}.w{max-width:1040px;margin:0 auto;padding:0 20px}
.nav{display:flex;align-items:center;justify-content:space-between;height:60px}.logo{display:flex;gap:10px;align-items:center;font-weight:700;color:var(--tx)}
.logo i{width:28px;height:28px;border-radius:7px;background:var(--c);display:inline-block}.nav nav a{margin-left:22px;color:var(--mu)}
.btn{display:inline-block;background:var(--c);color:#fff;padding:10px 18px;border-radius:8px;border:0;font-weight:600;cursor:pointer}.btn:hover{opacity:.92;text-decoration:none}
.hero{padding:80px 0 60px;text-align:center}.hero h1{font-size:42px;line-height:1.15;margin:0 0 16px}.hero p{color:var(--mu);font-size:18px;max-width:620px;margin:0 auto 28px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;padding-bottom:70px}.card{background:#fff;border:1px solid var(--bd);border-radius:12px;padding:24px}
.card h3{margin:0 0 6px;font-size:17px}.card p{margin:0;color:var(--mu)}
.box{max-width:400px;margin:70px auto;background:#fff;border:1px solid var(--bd);border-radius:12px;padding:32px}.box h1{font-size:22px;margin:0 0 6px}.box p.s{color:var(--mu);margin:0 0 22px}
label{display:block;font-weight:600;font-size:13px;margin:14px 0 6px}input{width:100%;padding:10px 12px;border:1px solid var(--bd);border-radius:8px;font:inherit}
.msg{display:none;margin-top:14px;padding:10px 12px;border-radius:8px;font-size:14px}.msg.err{display:block;background:#fef2f2;color:#b91c1c}.msg.ok{display:block;background:#f0fdf4;color:#15803d}
.doc{max-width:760px;margin:50px auto 80px;background:#fff;border:1px solid var(--bd);border-radius:12px;padding:36px}.doc h1{margin-top:0}.doc h2{font-size:18px;margin-top:28px}
.st{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--bd)}.ok{color:#15803d;font-weight:600}
footer{border-top:1px solid var(--bd);color:var(--mu);font-size:13px;padding:24px 0}footer a{color:var(--mu);margin-right:16px}