:root{color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:#0d0e11;color:#e8e8ec;font:16px/1.75 system-ui,-apple-system,"Hiragino Sans","PingFang SC",sans-serif}
header{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;max-width:760px;margin:0 auto;padding:18px 16px}
.logo{font-weight:800;font-size:18px;color:#fff;text-decoration:none}nav{font-size:14px;color:#888}nav a{color:#aaa;text-decoration:none}nav a[aria-current]{color:#ff7a45;font-weight:700}
main{max-width:760px;margin:0 auto;padding:8px 16px 48px}h1{font-size:28px;line-height:1.3;margin:12px 0}h2{font-size:20px;margin:32px 0 8px}h3{font-size:16px;margin:20px 0 2px}
.lead{font-size:17px;color:#cfcfd6}a{color:#ff9a70}li{margin:8px 0}ol{padding-left:22px}
.btn{display:inline-block;background:#ff7a45;color:#fff;font-weight:700;text-decoration:none;padding:12px 22px;border-radius:10px}
footer{max-width:760px;margin:0 auto;padding:24px 16px 48px;font-size:13px;color:#777;text-align:center}footer a{color:#999}