:root{--blue:#42a0c5;--blue-dark:#1f6f8f;--ink:#1c2a33;--muted:#5b6b75;--line:#e3e9ec;--bg:#f6f9fa;--card:#fff}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px}
a{color:var(--blue-dark)}
.wrap{max-width:880px;margin:0 auto;padding:0 20px}
header{background:#fff;border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:18px}
.brand img{width:36px;height:36px;border-radius:8px}
nav{display:flex;gap:4px;flex-wrap:wrap}
nav a{text-decoration:none;color:var(--muted);padding:8px 12px;border-radius:8px;font-size:15px}
nav a:hover{background:var(--bg);color:var(--ink)}
nav a[aria-current=page]{color:var(--blue-dark);background:#e8f4f9;font-weight:600}
main{padding:40px 0 56px}
.hero{text-align:center;padding:16px 0 8px}
.hero img{width:100%;max-width:360px;height:auto}
.hero p.lead{font-size:20px;color:var(--muted);max-width:620px;margin:20px auto 0}
h1{font-size:30px;line-height:1.2;margin:0 0 16px}
h2{font-size:21px;margin:32px 0 10px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px;margin-top:24px}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:28px}
.grid .card{margin:0}
.grid h3{margin:0 0 6px;font-size:17px;color:var(--blue-dark)}
.grid p{margin:0;color:var(--muted);font-size:15.5px}
.note{background:#e8f4f9;border-radius:12px;padding:16px 20px;margin-top:28px}
.btn{display:inline-block;background:var(--blue-dark);color:#fff;text-decoration:none;padding:12px 20px;border-radius:10px;font-weight:600}
.small{color:var(--muted);font-size:14.5px}
dl{margin:0}dt{font-weight:600;margin-top:12px}dd{margin:2px 0 0}
footer{border-top:1px solid var(--line);background:#fff;padding:24px 0;color:var(--muted);font-size:14px}
footer p{margin:4px 0}
footer nav{margin-top:10px}
footer nav a{padding:4px 10px 4px 0;font-size:14px}
@media (max-width:520px){.grid{grid-template-columns:1fr}body{font-size:16px}h1{font-size:26px}.hero p.lead{font-size:18px}main{padding:28px 0 40px}header .wrap{justify-content:center}}