:root{--bg:#f8faf8;--surface:#fff;--ink:#192b28;--sub:#586762;--line:#dce4df;--accent:#086e5b;--soft:#e6f0e9;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);font-size:16px;line-height:1.75;color-scheme:light dark}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-underline-offset:4px}a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:6px;border-radius:3px}a:hover{color:var(--accent)}.shell{max-width:1160px;margin:auto;padding:0 44px}.top{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);min-height:88px;gap:20px}.brand{display:flex;align-items:center;gap:12px;font-size:21px;font-weight:650;text-decoration:none;letter-spacing:-.5px}.navlinks{display:flex;gap:28px;font-size:14px}.navlinks a{text-decoration:none}.navlinks [aria-current]{text-decoration:underline;color:var(--accent)}.languages{display:flex;justify-content:flex-end;gap:18px;padding-top:16px;font-size:12px;color:var(--sub)}.languages a[aria-current]{font-weight:700;color:var(--accent)}.hero{padding:96px 0 82px;max-width:850px}.eyebrow{font-size:12px;letter-spacing:.1em;color:var(--accent);font-weight:650;margin:0 0 22px}h1{font-size:clamp(38px,5.3vw,68px);line-height:1.18;font-weight:650;letter-spacing:-.045em;margin:0 0 25px;text-wrap:balance}h2{font-size:24px;line-height:1.4;letter-spacing:-.02em;margin:0 0 14px}h3{font-size:18px;line-height:1.5;margin:0 0 8px}p{margin:0 0 18px}.lead{font-size:21px;line-height:1.7;color:var(--sub);max-width:690px}.button{display:inline-flex;align-items:center;gap:30px;padding:12px 22px;background:var(--accent);color:#fff;border-radius:10px;text-decoration:none;margin-top:15px;font-weight:600}.button:hover{color:#fff;filter:brightness(1.1)}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;padding:38px 0 45px;border-top:1px solid var(--line)}.features h2{font-size:21px}.features p,.note p{color:var(--sub);font-size:15px}.features section:before{content:"";display:block;width:28px;height:4px;background:var(--accent);border-radius:2px;margin-bottom:24px}.note{background:var(--soft);padding:28px 32px;border-radius:14px;margin:0 0 70px}.note h2{font-size:19px}.note p{margin-bottom:0}.article-head{padding:58px 0 52px;max-width:850px}.article-head h1{font-size:clamp(34px,4vw,50px)}.article{display:grid;grid-template-columns:210px minmax(0,1fr);gap:65px;padding-bottom:70px}.toc{display:flex;flex-direction:column;align-self:start;position:sticky;top:26px;font-size:13px;gap:12px;border-left:2px solid var(--line);padding-left:20px}.toc strong{margin-bottom:5px}.toc a{text-decoration:none;color:var(--sub)}.prose{max-width:760px}.prose section{margin-bottom:48px;scroll-margin-top:30px}.prose p{color:var(--sub)}.steps{padding-left:28px}.steps li{padding:0 0 18px 10px}.steps li::marker{color:var(--accent);font-weight:700}.steps p{margin-bottom:0}details{border-top:1px solid var(--line);padding:18px 0}details:last-child{border-bottom:1px solid var(--line)}summary{cursor:pointer;font-weight:600;padding-right:12px}details p{margin:14px 0 0}.text-link{color:var(--accent);font-weight:600}.muted{font-size:14px;color:var(--sub)}footer{border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;padding:28px 0 35px;font-size:12px;color:var(--sub)}footer p{flex:1;margin:0}footer a{white-space:nowrap}.skip{position:absolute;left:12px;top:-100px;background:var(--surface);padding:10px;z-index:2}.skip:focus{top:10px}@media(max-width:760px){.shell{padding:0 22px}.top{min-height:76px}.navlinks{gap:18px}.brand{font-size:18px;gap:8px}.hero{padding:62px 0 48px}.lead{font-size:18px}.features{grid-template-columns:1fr;gap:20px}.features section:before{margin-bottom:14px}.features p{margin-bottom:0}.article{grid-template-columns:1fr;gap:32px}.toc{position:static;flex-direction:row;flex-wrap:wrap;border-left:0;border-bottom:1px solid var(--line);padding:0 0 20px;gap:12px 20px}.toc strong{width:100%}.article-head{padding:42px 0 28px}.note{padding:22px}.languages{gap:14px}footer{display:block}footer>*{display:block;margin-bottom:10px}}@media(prefers-color-scheme:dark){:root{--bg:#141d1b;--surface:#1d2a26;--ink:#e0ebe5;--sub:#adbbb3;--line:#35463e;--accent:#8bd4b6;--soft:#22382e}.button{background:#157b61;color:#fff}}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}@media print{.top,.languages,.toc,.skip{display:none}.article{display:block}.shell{padding:0}.article-head{padding-top:0}details p{display:block}footer{margin-top:30px}:root{--bg:white;--ink:black;--sub:#333}}