/* FoldAhhh: white, ink, quiet gray, chicken yellow. System fonts, no remote dependencies. */
:root{color-scheme:light;--ink:#252622;--muted:#64665e;--line:#e6e7e0;--yellow:#ffd447;--soft:#fff8df;--link:#665000;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:#fff;font-synthesis:none}
*{box-sizing:border-box}html{scroll-padding-top:24px}body{margin:0;font-size:16px;line-height:1.85}a{color:var(--link);text-underline-offset:4px;overflow-wrap:anywhere}a:hover{text-decoration-thickness:2px}a:focus-visible{outline:3px solid #926c00;outline-offset:5px;border-radius:3px}.skip{position:absolute;top:-100px;left:16px;padding:8px 12px;background:var(--yellow);z-index:2}.skip:focus{top:12px}.site-header{border-bottom:1px solid var(--line)}.header-inner{max-width:960px;margin:auto;padding:22px 32px;display:flex;justify-content:space-between;align-items:center;gap:24px}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:750;font-size:21px;letter-spacing:-.5px;text-decoration:none}.brand-mark{display:grid;place-items:center;width:32px;height:36px;background:var(--yellow);border-radius:50% 50% 42% 42%;font-weight:850;font-size:22px;transform:rotate(-7deg)}.site-header nav{display:flex;gap:22px;flex-wrap:wrap}.site-header nav a{color:var(--muted);font-size:14px;text-decoration:none;padding:4px 0}.site-header nav a[aria-current]{color:var(--ink);border-bottom:3px solid var(--yellow)}main{max-width:800px;margin:auto;padding:52px 32px 64px}.eyebrow{font-size:12px;font-weight:750;letter-spacing:2px;color:var(--muted);margin:0 0 10px}h1{font-size:38px;line-height:1.3;letter-spacing:-1px;margin:0}h1 span{display:block;font-size:22px;font-weight:500;letter-spacing:-.3px;color:var(--muted);margin-top:8px}.language-nav{display:flex;gap:20px;margin-top:26px;font-size:14px}.page-heading{margin-bottom:40px}article{scroll-margin-top:24px}article+article{border-top:1px solid var(--line);margin-top:52px;padding-top:36px}h2{font-size:23px;line-height:1.5;margin:0 0 20px;letter-spacing:-.4px}h3{font-size:18px;line-height:1.6;margin:32px 0 10px;font-weight:700}p{margin:10px 0;overflow-wrap:anywhere}.meta{color:var(--muted);font-size:14px;line-height:1.75;margin:5px 0}ul{padding-left:24px;margin:12px 0}li{padding-left:3px}footer{max-width:960px;margin:auto;padding:24px 32px 32px;border-top:1px solid var(--line);display:flex;align-items:center;flex-wrap:wrap;gap:12px 24px;font-size:13px;color:var(--muted)}footer>span{font-weight:700;margin-right:auto}
@media(max-width:520px){.header-inner{padding:18px 20px;gap:16px}.brand{font-size:19px}.site-header nav{gap:14px}.site-header nav a{font-size:13px}main{padding:36px 22px 48px}h1{font-size:32px}h1 span{font-size:20px}h2{font-size:21px}.page-heading{margin-bottom:32px}footer{padding:22px;align-items:flex-start}footer>span{width:100%}body{line-height:1.8}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}