:root{color-scheme:dark;font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;background:#101427;color:#edf1ff}
*{box-sizing:border-box}
body{margin:0;background:radial-gradient(circle at 80% 0%,#34274e 0,transparent 34rem),#101427;line-height:1.8}
a{color:#ffe1aa;text-underline-offset:.2em}
a:hover,a:focus-visible{color:#fff3dc}
header,main,footer{width:min(840px,calc(100% - 36px));margin-inline:auto}
header{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:26px 0;border-bottom:1px solid #454764}
header .brand{color:#fff1d8;text-decoration:none;font-weight:700;letter-spacing:.04em}
header nav{display:flex;flex-wrap:wrap;gap:18px;font-size:.9rem}
main{padding:48px 0 68px}
.eyebrow{color:#c5b3fb;font-size:.78rem;letter-spacing:.15em}
h1,h2{font-family:"Noto Serif SC","Songti SC",serif;line-height:1.35;letter-spacing:-.03em}
h1{font-size:clamp(2rem,5vw,3.3rem);margin:.45em 0 .35em}
h2{font-size:clamp(1.35rem,3vw,1.8rem);margin:0 0 .5em;color:#fff1d8}
p{margin:.5em 0 1em;color:#cdd5e9}
.lead{font-size:1.12rem;color:#eef1ff;max-width:42em}
.intro{padding-bottom:20px}
section{padding:25px 0;border-top:1px solid #383d5c}
ol,ul{padding-left:1.5em;color:#cdd5e9}
li{padding:.28em 0}
strong{color:#f5f1ff}
.example,.notice{padding:18px 22px;border:1px solid #555475;background:#1b213d;border-radius:14px}
.example p:last-child,.notice p:last-child{margin-bottom:0}
.cta{display:inline-block;margin-top:15px;padding:11px 20px;border-radius:999px;background:#ffdaa0;color:#1b1a31;text-decoration:none;font-weight:700}
.cta:hover,.cta:focus-visible{background:#fff0d2;color:#1b1a31}
.related{display:flex;flex-wrap:wrap;gap:12px 24px}
footer{padding:23px 0 42px;border-top:1px solid #454764;color:#bfc9df;font-size:.85rem}
@media(max-width:520px){header{align-items:flex-start}header nav{gap:10px 15px}main{padding-top:30px}.example,.notice{padding:15px}}