:root{--ink:#111b1a;--muted:#55625f;--line:#e2e0d8;--paper:#f5f4ef;--card:#fff;--brand:#0a8075;--brand2:#27bba9;--gold:#c1780c;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--ink:#eef4f2;--muted:#9aaaa6;--line:#24302f;--paper:#0c0f10;--card:#151a1b;--brand:#27bba9;--brand2:#57d6c4;--gold:#f0bb25;color-scheme:dark}}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 'DM Sans',system-ui,-apple-system,'Segoe UI',sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--brand);font-weight:600}a:hover{color:var(--brand2)}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;background:var(--card);padding:8px 12px;border-radius:8px;z-index:9}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.top{background:linear-gradient(180deg,#0b2523,#071716);color:#fff;padding-top:env(safe-area-inset-top,0px)}
.top-row{display:flex;align-items:center;justify-content:space-between;height:68px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font:800 18px/1 'Plus Jakarta Sans',sans-serif;letter-spacing:-.03em}
.brand b{color:#f0bb25;font-weight:800}.brand em{font:500 12px/1 'DM Sans',sans-serif;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.5);font-style:normal;margin-left:6px;padding-left:12px;border-left:1px solid rgba(255,255,255,.2)}
.back{color:#57d6c4;font-size:14px;text-decoration:none;white-space:nowrap}
.layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;padding-block:44px 72px}
.side nav{position:sticky;top:24px;display:flex;flex-direction:column;gap:2px}
.side a,.linkbtn{display:block;padding:9px 12px;border-radius:10px;color:var(--muted);text-decoration:none;font-weight:600;font-size:14.5px;background:none;border:0;text-align:left;font-family:inherit;cursor:pointer}
.side a:hover,.linkbtn:hover{background:rgba(10,128,117,.08);color:var(--ink)}
.side a[aria-current=page]{background:rgba(10,128,117,.12);color:var(--brand);box-shadow:inset 3px 0 0 var(--brand)}
.linkbtn{color:var(--brand);margin-top:10px;border-top:1px solid var(--line);border-radius:0;padding-top:14px}
.linkbtn.inline{display:inline;padding:0;margin:0;border:0;font-size:inherit;text-decoration:underline}
main{min-width:0}
h1{font:800 clamp(30px,5vw,44px)/1.08 'Plus Jakarta Sans',sans-serif;letter-spacing:-.035em;margin:0}
h2{font:700 21px/1.3 'Plus Jakarta Sans',sans-serif;letter-spacing:-.02em;margin:44px 0 12px;scroll-margin-top:20px}
.intro{font-size:18px;color:var(--muted);margin:12px 0 4px;max-width:720px}
.meta{font-size:13px;color:var(--muted);margin:0 0 24px}
.toc{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px 18px;margin:24px 0 8px;columns:2;column-gap:24px}
.toc p{margin:0 0 6px;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);column-span:all}
.toc a{display:block;font-size:14px;padding:3px 0;text-decoration:none;break-inside:avoid}
article{max-width:760px}article p,article li{color:var(--ink)}article li{margin:6px 0}article ul,article ol{padding-left:22px}
table{width:100%;border-collapse:collapse;font-size:14.5px;margin:12px 0;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
th{background:rgba(10,128,117,.07);font-weight:700}
code{font:13px 'JetBrains Mono',ui-monospace,monospace;background:rgba(10,128,117,.08);padding:1px 6px;border-radius:6px}
.callout{border-left:4px solid var(--gold);background:rgba(240,187,37,.1);padding:14px 16px;border-radius:0 12px 12px 0}
.btn{appearance:none;border:0;background:#0a8075;color:#fff;font:700 15px/1 'DM Sans',sans-serif;padding:13px 18px;border-radius:11px;cursor:pointer}
.btn:hover{background:#109f8f}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin-top:28px}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;text-decoration:none;transition:transform .15s,border-color .15s}
.card:hover{transform:translateY(-2px);border-color:var(--brand)}
.card strong{display:block;color:var(--ink);font:700 16.5px/1.3 'Plus Jakarta Sans',sans-serif}.card span{display:block;color:var(--muted);font-weight:400;font-size:14px;margin-top:6px;line-height:1.5}
.summary{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:6px 24px 18px;margin-top:28px}
.foot{border-top:1px solid var(--line);padding-block:24px calc(24px + env(safe-area-inset-bottom,0px));font-size:13.5px;color:var(--muted)}.foot p{margin:4px 0}
:focus-visible{outline:2px solid var(--brand2);outline-offset:2px}
@media (max-width:860px){.layout{grid-template-columns:1fr;gap:20px;padding-top:24px}.side nav{position:static;flex-direction:row;flex-wrap:wrap}.side a,.linkbtn{padding:7px 10px;font-size:13.5px}.linkbtn{border-top:0;margin-top:0;padding-top:7px}.toc{columns:1}.brand em{display:none}}