:root{--ink:#14202b;--muted:#5b6b7a;--line:#e3e8ee;--bg:#ffffff;--soft:#f6f8fa;--brand:#0f4c81;--brand2:#1a73b8;--warn-bg:#fff4d6;--warn-line:#f0c24b;--warn-ink:#5c4300;--mark:#fff1b8}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;display:flex;flex-direction:column;min-height:100vh}
a{color:var(--brand2);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--brand)}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.topbar{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
.topbar-in{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.logo{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--brand);color:#fff;font-size:16px}
.topnav a{margin-left:20px;color:var(--muted);text-decoration:none;font-size:15px}
.topnav a:hover{color:var(--ink)}
main{flex:1}
.hero{padding:16vh 24px 12vh;max-width:760px}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:12.5px;font-weight:600;color:var(--brand2);margin:0 0 10px}
.hero h1{font-size:clamp(40px,7vw,64px);line-height:1.05;letter-spacing:-.03em;margin:0 0 18px}
.lede{font-size:20px;color:var(--muted);margin:0 0 28px;max-width:640px}
.soon{display:inline-flex;align-items:center;gap:10px;padding:10px 16px;border:1px solid var(--line);border-radius:999px;background:var(--soft);font-weight:600;font-size:15px;margin:0}
.dot{width:8px;height:8px;border-radius:50%;background:#2fa36b;box-shadow:0 0 0 4px rgba(47,163,107,.15)}
.draft-banner{background:var(--warn-bg);border-bottom:1px solid var(--warn-line);color:var(--warn-ink);font-size:15px;padding:12px 0}
.doc-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:56px;padding-top:40px;padding-bottom:64px}
.toc-in{position:sticky;top:84px;max-height:calc(100vh - 110px);overflow:auto;padding-right:8px}
.toc-h{font-size:12.5px;text-transform:uppercase;letter-spacing:.1em;font-weight:700;color:var(--muted);margin:0 0 10px}
.toc ol,.toc-mobile ol{list-style:none;margin:0;padding:0}
.toc li a,.toc-mobile li a{display:block;padding:5px 10px;border-left:2px solid var(--line);color:var(--muted);text-decoration:none;font-size:14px;line-height:1.4}
.toc li a:hover{color:var(--ink);border-left-color:var(--brand2);background:var(--soft)}
.toc-meta{font-size:12.5px;color:var(--muted);margin-top:16px;line-height:1.5}
.toc-mobile{display:none;border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin:0 0 24px;background:var(--soft)}
.toc-mobile summary{cursor:pointer;font-weight:600}
.doc{max-width:74ch;font-family:Charter,"Bitstream Charter","Sitka Text",Cambria,Georgia,serif;font-size:18px;line-height:1.7}
.doc h1{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;font-size:36px;line-height:1.15;letter-spacing:-.02em;margin:0 0 8px}
.doc .eyebrow{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif}
.byline{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;color:var(--muted);font-size:14.5px;margin:0 0 32px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.doc h2{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;font-size:22px;letter-spacing:-.01em;margin:48px 0 12px;scroll-margin-top:80px}
.doc p,.doc ul,.doc ol{margin:0 0 16px}
.doc li{margin:0 0 8px}
.doc strong{font-weight:700}
mark.ph{background:var(--mark);color:inherit;padding:0 3px;border-radius:3px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.82em}
.tbl{overflow-x:auto;margin:0 0 24px}
.doc table{border-collapse:collapse;width:100%;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;font-size:15px}
.doc th,.doc td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.doc th{background:var(--soft);font-weight:700}
.back{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;font-size:14px;margin-top:40px}
.foot{border-top:1px solid var(--line);color:var(--muted);font-size:14px;padding:22px 0}
.foot a{color:var(--muted)}
.foot .sep{margin:0 8px}
@media (max-width:900px){.doc-layout{grid-template-columns:1fr;gap:0}.toc{display:none}.toc-mobile{display:block}.doc{font-size:17px}}
@media print{.topbar,.toc,.toc-mobile,.foot,.back{display:none}.draft-banner{border:1px solid #000}.doc-layout{display:block}.doc{max-width:none}}
.btn{display:inline-block;padding:8px 16px;border-radius:8px;background:var(--brand);color:#fff!important;text-decoration:none;font-weight:600;font-size:15px}
.btn:hover{background:var(--brand2)}
.btn-lg{padding:12px 22px;font-size:16px}
.btn-ghost{border:1px solid var(--line);padding:6px 12px;border-radius:8px}
.topnav a.btn{margin-left:20px}
.cta{margin:0 0 12px}
.soon-note{color:var(--muted);font-size:14.5px;margin:0}
.cards{list-style:none;padding:0;margin:0 0 28px;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.cards a{display:block;padding:18px 20px;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--ink);background:#fff}
.cards a:hover{border-color:var(--brand2);background:var(--soft)}
.cards strong{display:block;font-size:17px;margin-bottom:4px}
.cards span{color:var(--muted);font-size:14px}