*{box-sizing:border-box;margin:0;padding:0}
:root{--ink:#0d1b2a;--muted:#5b6b7c;--line:#e3e8ee;--blue:#1f5eff;--bg:#ffffff;--soft:#f4f7fb}
body{font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 28px}
header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:5}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--ink);letter-spacing:-.02em}
.logo:hover{text-decoration:none}
.logo i{width:26px;height:26px;border-radius:50%;border:6px solid var(--blue);display:inline-block}
nav a{color:var(--ink);margin-left:28px;font-size:15px}
nav a.on{color:var(--blue);font-weight:600}
.hero{padding:96px 0 80px}
.hero h1{font-size:56px;line-height:1.05;letter-spacing:-.03em;max-width:760px}
.hero h1 span{color:var(--blue)}
.hero p{font-size:19px;color:var(--muted);max-width:600px;margin-top:22px}
.btn{display:inline-block;margin-top:34px;background:var(--blue);color:#fff;padding:14px 26px;border-radius:6px;font-weight:600}
.btn:hover{text-decoration:none;opacity:.92}
.grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}
.grid div{padding:40px 32px 48px 0;border-right:1px solid var(--line)}
.grid div+div{padding-left:32px}
.grid div:last-child{border-right:0}
.grid b{display:block;font-size:13px;color:var(--blue);letter-spacing:.08em;margin-bottom:14px}
.grid h3{font-size:21px;margin-bottom:10px}
.grid p{color:var(--muted)}
.band{background:var(--soft);padding:72px 0;margin-top:40px}
.band .wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.band h2{font-size:34px;letter-spacing:-.02em;line-height:1.15}
.band dl{display:grid;grid-template-columns:150px 1fr;gap:12px 20px}
.band dt{color:var(--muted)}
.doc{padding:64px 0 80px;max-width:760px}
.doc h1{font-size:40px;letter-spacing:-.02em;margin-bottom:8px}
.doc .upd{color:var(--muted);margin-bottom:36px}
.doc h2{font-size:21px;margin:34px 0 10px}
.doc p,.doc li{color:#2a3a4c;margin-bottom:10px}
.doc ul{padding-left:22px}
.card{border:1px solid var(--line);border-radius:10px;padding:28px;margin:22px 0}
footer{border-top:1px solid var(--line);padding:44px 0 36px;font-size:14px;color:var(--muted)}
footer .wrap{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px}
footer h4{color:var(--ink);font-size:14px;margin-bottom:10px}
footer a{display:block;color:var(--muted);margin-bottom:6px}
footer .copy{grid-column:1/-1;border-top:1px solid var(--line);padding-top:20px;margin-top:8px}
@media(max-width:800px){.hero h1{font-size:38px}.grid,.band .wrap,footer .wrap{grid-template-columns:1fr}.grid div,.grid div+div{padding:28px 0;border-right:0;border-bottom:1px solid var(--line)}nav a{margin-left:16px}.band dl{grid-template-columns:1fr}}