:root{--ink:#111827;--ink2:#1f2937;--teal:#2dd4bf;--text:#e5e7eb;--muted:#9ca3af;--line:#374151}
*{box-sizing:border-box}
html{font-size:16px}
body{margin:0;background:var(--ink);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;line-height:1.65;font-size:1rem}
a{color:var(--teal)}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
header.top{border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;gap:14px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font-weight:700;font-size:1.25rem}
.brand img{width:36px;height:36px}
nav{margin-left:auto;display:flex;gap:18px;flex-wrap:wrap}
nav a{color:var(--text);text-decoration:none}
nav a:hover{color:var(--teal)}
.hero{padding:64px 0 48px;display:grid;grid-template-columns:1fr 220px;gap:40px;align-items:center}
.hero img{width:100%;max-width:220px;justify-self:center}
h1{font-size:2.6rem;line-height:1.15;margin:0 0 16px;color:#fff}
h2{font-size:1.6rem;margin:48px 0 16px;color:#fff}
h3{font-size:1.1rem;margin:0 0 6px;color:#fff}
.lead{font-size:1.2rem;color:var(--text);max-width:34em}
.btn{display:inline-block;background:var(--teal);color:var(--ink);font-weight:700;padding:14px 24px;border-radius:10px;text-decoration:none;margin:20px 12px 8px 0}
.btn.alt{background:transparent;color:var(--teal);border:2px solid var(--teal)}
.note{color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:16px}
.card{background:var(--ink2);border:1px solid var(--line);border-radius:12px;padding:20px}
.card p{margin:0;color:var(--text)}
.steps{counter-reset:s;padding:0;list-style:none}
.steps li{counter-increment:s;position:relative;padding:0 0 14px 48px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:8px;background:var(--teal);color:var(--ink);font-weight:700;display:grid;place-items:center}
footer{border-top:1px solid var(--line);margin-top:64px;padding:28px 0;color:var(--muted)}
footer .wrap{display:flex;gap:20px;flex-wrap:wrap}
footer .sp{margin-left:auto}
.doc{padding:40px 0 0;max-width:760px}
.doc h1{font-size:2.1rem}
.doc h2{font-size:1.3rem;margin:34px 0 10px}
.doc ul{padding-left:22px}
.doc li{margin:6px 0}
table{border-collapse:collapse;width:100%;margin:12px 0}
th,td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
th{background:var(--ink2)}
@media(max-width:640px){.hero{grid-template-columns:1fr;padding-top:40px}.hero img{max-width:120px;justify-self:start;order:-1}h1{font-size:2.1rem}nav{margin-left:0}}