:root{--bg:#fbfaf7;--fg:#1c1b19;--muted:#6b675f;--line:#e4e0d6;--accent:#b4472e;--card:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#161513;--fg:#ece8df;--muted:#9c978c;--line:#2e2c28;--accent:#e8866c;--card:#1e1d1a}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.65 Georgia,"Iowan Old Style","Times New Roman",serif}
a{color:inherit;text-underline-offset:3px}a:hover{color:var(--accent)}
.top,main,footer{max-width:920px;margin:0 auto;padding:0 20px}
.top{display:flex;justify-content:space-between;align-items:baseline;padding-top:28px;padding-bottom:28px;flex-wrap:wrap;gap:12px}
.brand{font:700 20px/1 ui-sans-serif,system-ui,"Helvetica Neue",Arial,sans-serif;text-decoration:none;letter-spacing:-.02em}.brand span{color:var(--muted);font-weight:400}
nav a{font:15px ui-sans-serif,system-ui,Arial,sans-serif;margin-left:20px;text-decoration:none;color:var(--muted)}nav a:first-child{margin-left:0}
h1{font-size:clamp(32px,6vw,52px);line-height:1.1;letter-spacing:-.02em;margin:40px 0 20px;text-wrap:balance}
h2{font-size:24px;margin:48px 0 12px;letter-spacing:-.01em}h3{font:600 16px ui-sans-serif,system-ui,Arial,sans-serif;margin:0 0 6px}
.lede{font-size:21px;color:var(--muted);max-width:40em}
.hero{padding:24px 0 40px}
.btn{display:inline-block;background:var(--fg);color:var(--bg);padding:11px 20px;border-radius:999px;text-decoration:none;font:600 15px ui-sans-serif,system-ui,Arial,sans-serif;margin-right:16px}.btn:hover{background:var(--accent);color:#fff}
.link{font:15px ui-sans-serif,system-ui,Arial,sans-serif}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin:24px 0}
.grid3 article{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}.grid3 p{margin:0;color:var(--muted);font-size:16px}
.list{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}
.list li{display:grid;grid-template-columns:1fr 2fr auto;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);align-items:baseline}
.list span{color:var(--muted);font-size:16px}.list em{font:14px ui-monospace,Menlo,monospace;color:var(--muted);font-style:normal}
.case{display:grid;grid-template-columns:200px 1fr;gap:28px;padding:32px 0;border-top:1px solid var(--line)}.case h2{margin-top:0}
.swatch{border-radius:12px;min-height:150px}.s1{background:linear-gradient(135deg,#2f4858,#86bbd8)}.s2{background:linear-gradient(135deg,#6b4226,#d9a05b)}.s3{background:linear-gradient(135deg,#33658a,#f6ae2d)}.s4{background:linear-gradient(135deg,#55286f,#bc96e6)}
.meta{font:14px ui-sans-serif,system-ui,Arial,sans-serif;color:var(--muted);margin:0 0 10px}
.steps li{margin-bottom:10px}.plain{padding-left:20px}.note{border-top:1px solid var(--line);padding:8px 0 16px}.note h2{margin-top:24px}
.big{font-size:clamp(24px,5vw,36px)}code{font:15px ui-monospace,Menlo,monospace;background:var(--card);border:1px solid var(--line);padding:1px 5px;border-radius:5px}
footer{margin-top:72px;padding-top:24px;padding-bottom:40px;border-top:1px solid var(--line);color:var(--muted);font:14px ui-sans-serif,system-ui,Arial,sans-serif}footer p{margin:4px 0}
@media (max-width:640px){.case{grid-template-columns:1fr}.swatch{min-height:110px}.list li{grid-template-columns:1fr auto}.list span{display:none}}