:root{--ink:#0E1A3A;--cloud:#F3F5F9;--line:#E3E7EE;--muted:#5B6676;--amber:#FFB800;--green:#1C8A5A;--bg:#fff;--text:#0E1A3A}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0B1430;--text:#F3F5F9;--cloud:#162247;--line:#243264;--muted:#9AA6BE}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif}
a{color:inherit}
.wrap{max-width:720px;margin:0 auto;padding:0 16px}
header.top{background:var(--ink);color:#fff}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff;font-weight:800;font-size:20px;letter-spacing:-.4px}
.brand img{width:28px;height:28px;border-radius:7px}
nav a{color:rgba(255,255,255,.85);text-decoration:none;margin-left:16px;font-size:14px;font-weight:600}
nav a:hover{color:#fff}
.hero{background:var(--ink);color:#fff;padding:56px 0 64px}
.hero h1{font-size:44px;line-height:1.05;letter-spacing:-1.5px;margin:0 0 14px;font-weight:800}
.hero p{font-size:20px;line-height:1.4;color:rgba(255,255,255,.85);margin:0 0 28px;max-width:34em}
.btn{display:inline-block;background:var(--amber);color:var(--ink);font-weight:700;text-decoration:none;padding:13px 20px;border-radius:12px}
.btn.secondary{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.4)}
.hero .btn{margin:0 8px 8px 0}
main{padding:36px 0 64px}
h1{font-size:34px;letter-spacing:-.8px;line-height:1.1;margin:0 0 8px}
h2{font-size:22px;letter-spacing:-.3px;margin:36px 0 10px}
h3{font-size:17px;margin:24px 0 6px}
p,li{max-width:40em}
.meta{color:var(--muted);font-size:14px;margin:0 0 24px}
.card{background:var(--cloud);border-radius:16px;padding:16px 18px;margin:12px 0}
.card strong{display:block;margin-bottom:4px}
.grid{display:grid;grid-template-columns:1fr;gap:12px;margin:24px 0}
@media (min-width:640px){.grid{grid-template-columns:1fr 1fr 1fr}}
footer{border-top:1px solid var(--line);padding:24px 0 40px;color:var(--muted);font-size:14px}
footer a{margin-right:14px}
code{background:var(--cloud);padding:1px 6px;border-radius:6px;font-size:14px}
.notice{border-left:4px solid var(--amber);padding:10px 14px;background:var(--cloud);border-radius:0 12px 12px 0;margin:16px 0}