*{box-sizing:border-box;margin:0;padding:0}
body{font:15px/1.65 "Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:#1d2530;background:#f6f7f9}
a{color:#0b6a5a;text-decoration:none}a:hover{text-decoration:underline}
header{background:#0f2027;color:#e9eef1;padding:18px 0;border-bottom:3px solid #0b6a5a}
.wrap{max-width:980px;margin:0 auto;padding:0 22px}
header .wrap{display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.brand{font-weight:700;font-size:19px;letter-spacing:.4px}
.brand span{color:#4fd1b5}
nav a{color:#c6d2d8;font-size:14px;margin-right:16px}
main{padding:34px 0 60px}
h1{font-size:27px;margin-bottom:12px;font-weight:650}
h2{font-size:19px;margin:26px 0 10px;font-weight:600}
p{margin-bottom:12px;color:#39444f}
.lead{font-size:16px;color:#4a5560;max-width:640px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin-top:22px}
.card{background:#fff;border:1px solid #e2e6ea;border-radius:6px;padding:16px 18px}
.card h3{font-size:15px;margin-bottom:6px;color:#0f2027}
.card p{font-size:13.5px;color:#5b6570;margin:0}
table{width:100%;border-collapse:collapse;margin-top:14px;background:#fff;border:1px solid #e2e6ea}
th,td{padding:9px 12px;text-align:left;font-size:13.5px;border-bottom:1px solid #eef1f3}
th{background:#f0f3f5;font-weight:600;color:#25313c}
code{background:#eef1f3;padding:1px 5px;border-radius:3px;font-size:13px;font-family:Consolas,monospace}
.ok{color:#0b8457;font-weight:600}
footer{border-top:1px solid #e2e6ea;padding:20px 0;color:#75808a;font-size:13px;background:#fff}