:root{color-scheme:light;--ink:#172c32;--muted:#53686d;--line:#dce6e5;--accent:#096b5c;--surface:#f3f8f6;--paper:#fff}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.8;word-break:keep-all;overflow-wrap:anywhere}
a{color:var(--accent);text-underline-offset:.22em}
a:hover{text-decoration-thickness:2px}
a:focus-visible{outline:3px solid var(--accent);outline-offset:5px;border-radius:2px}
.skip{position:absolute;left:16px;top:-100px;background:var(--paper);padding:8px 16px;z-index:5}.skip:focus{top:12px}
.site-header{border-bottom:1px solid var(--line);background:var(--paper)}
.bar{max-width:1080px;margin:auto;padding:20px 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.brand{font-size:1.15rem;font-weight:750;color:var(--ink);text-decoration:none;letter-spacing:-.04em}
nav{display:flex;gap:20px;flex-wrap:wrap;font-size:.9rem}nav a{text-decoration:none}nav a[aria-current=page]{font-weight:750;text-decoration:underline}
main{max-width:920px;margin:0 auto;padding:54px 28px 80px}
.eyebrow{font-size:.8rem;font-weight:700;letter-spacing:.08em;color:var(--accent);text-transform:uppercase}
h1,h2,h3{line-height:1.4;letter-spacing:-.035em}h1{font-size:clamp(2rem,5vw,3rem);margin:12px 0 18px}h2{font-size:1.38rem;margin:44px 0 16px}h3{font-size:1.08rem;margin:26px 0 8px}
p{margin:12px 0}.lead{font-size:1.1rem;max-width:680px;color:var(--muted)}.meta{font-size:.9rem;color:var(--muted)}
.panel{margin:28px 0;padding:24px 26px;background:var(--surface);border:1px solid var(--line);border-radius:14px}.panel p:first-child{margin-top:0}.panel p:last-child{margin-bottom:0}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:34px 0}.card{padding:25px;border:1px solid var(--line);border-radius:14px}.card h2{margin:0 0 12px}.card p{color:var(--muted)}
.button{display:inline-block;padding:10px 18px;background:var(--accent);color:#fff;border-radius:8px;text-decoration:none;font-weight:650;margin-top:12px}
.toc{padding:20px 24px;border-left:4px solid var(--accent);background:var(--surface)}.toc ol{margin:6px 0;padding-left:22px}.toc a{font-size:.95rem}
ul,ol{padding-left:24px}li{margin:8px 0}
dl{display:grid;grid-template-columns:130px 1fr;gap:9px 18px}dt{font-weight:650}dd{margin:0}
.data-flow{border-top:1px solid var(--line);padding:18px 0}.data-flow h3{margin-top:0}.data-flow p{margin:8px 0}.label{font-weight:650}
.small{font-size:.88rem;color:var(--muted)}
footer{border-top:1px solid var(--line);background:var(--surface)}.footer-inner{max-width:1080px;margin:auto;padding:25px 28px;font-size:.86rem;color:var(--muted)}
@media(max-width:600px){.bar{padding:18px 20px;gap:8px}nav{gap:14px;font-size:.82rem}main{padding:36px 20px 54px}h2{margin-top:34px}.panel{padding:20px}.cards{grid-template-columns:1fr}.card{padding:22px}dl{grid-template-columns:1fr;gap:0}dd{margin-bottom:12px}.footer-inner{padding:22px 20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}