:root{--blue:#1d4ed8;--blue2:#2563eb;--ink:#111827;--muted:#4b5563;--line:#e5e7eb;--bg:#f8fafc;--card:#fff;--ok:#047857}
@media (prefers-color-scheme:dark){:root{--ink:#e5e7eb;--muted:#9ca3af;--line:#1f2937;--bg:#0b1220;--card:#111a2b}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--blue2)}img{max-width:100%}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid var(--line);background:var(--card)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--ink);text-decoration:none}
.brand img{width:34px;height:34px;border-radius:9px}
nav a{margin-left:18px;color:var(--muted);text-decoration:none;font-weight:600}
.hero{padding:64px 0 40px;text-align:center}
.hero h1{font-size:clamp(30px,5vw,48px);line-height:1.15;margin:0 0 16px;letter-spacing:-.02em}
.hero p{font-size:19px;color:var(--muted);max-width:640px;margin:0 auto 28px}
.cta{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.btn{display:inline-block;padding:13px 22px;border-radius:10px;font-weight:700;text-decoration:none;border:2px solid var(--blue)}
.btn.primary{background:var(--blue);color:#fff}.btn.secondary{color:var(--blue2);background:transparent}
.note{font-size:14px;color:var(--muted);margin-top:14px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:28px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}
.card h3{margin:0 0 6px;font-size:17px}.card p{margin:0;color:var(--muted);font-size:15px}
section{padding:24px 0}section h2{font-size:26px;margin:0 0 8px}
ol.steps{padding-left:20px}ol.steps li{margin:8px 0}
.devices{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
footer{border-top:1px solid var(--line);margin-top:40px;padding:24px 0;color:var(--muted);font-size:14px}
footer a{color:var(--muted);margin-right:16px}
.legal{max-width:760px}.legal h2{margin-top:28px;font-size:21px}
.mt{margin-top:10px}.small{font-size:13px}.cta.left{justify-content:flex-start}
.hero .note{font-size:14px;margin-top:14px}
@media (max-width:480px){nav a{margin-left:10px;font-size:14px}.brand{font-size:17px}.brand img{width:30px;height:30px}}