:root{--ink:#1a1a1a;--muted:#666;--card:#fff;--line:#e7e7e7;--bg:#f9f9fb;--accent1:#a0e;--accent2:#6cf;--accent3:#9f6}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,sans-serif;background:var(--bg);color:var(--ink)}
a{color:#0066cc;text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:980px;margin:0 auto;padding:0 18px}
nav{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
nav .wrap{display:flex;gap:18px;align-items:center;min-height:56px}
nav .brand{display:flex;align-items:center;gap:10px;font-weight:700}
nav img.logo{width:28px;height:28px;border-radius:4px}
nav .links{display:flex;flex-wrap:wrap;gap:12px;margin-left:auto}
nav .links a{padding:6px 10px;border-radius:8px}
header.hero{background:#fff;border-bottom:1px solid var(--line)}
header.hero .container{display:flex;flex-direction:column;align-items:center;text-align:center;padding:36px 18px}
header.hero img{max-width:280px;height:auto;border-radius:10px;background:#fff}
h1{font-size:36px;margin:14px 0 6px}
.lead{max-width:760px;font-size:18px;color:var(--muted)}
.ribbon{width:120px;height:4px;border-radius:3px;margin:16px auto;background:linear-gradient(90deg,var(--accent1),var(--accent2),var(--accent3),var(--accent1))}
.section{padding:36px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}
.grid{display:grid;gap:18px}
@media(min-width:800px){.grid.col-2{grid-template-columns:1fr 1fr}}
footer{margin-top:40px;border-top:1px solid var(--line);background:#fff}
footer .container{padding:18px;color:var(--muted);text-align:center;font-size:14px}
.small{font-size:14px;color:var(--muted)}
code.copy{display:inline-block;padding:10px 12px;background:#f3f3f5;border:1px dashed #c9c9cf;border-radius:8px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
ul.clean{padding-left:18px}
.meta{display:none}