:root{--navy:#142b3b;--teal:#0c8f83;--ink:#1e303a;--muted:#576773;--bg:#f2f6f6;--line:#dce7e5;--white:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,Arial,Helvetica,sans-serif;line-height:1.72;-webkit-font-smoothing:antialiased}
.strip{height:6px;background:linear-gradient(90deg,var(--navy),var(--teal))}.wrap{width:min(100% - 40px,1000px);margin:auto}
header{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:28px 0 18px}.brand{font-size:19px;font-weight:800;letter-spacing:-.03em;color:var(--navy);text-decoration:none}.brand span{color:var(--teal)}header nav{display:flex;flex-wrap:wrap;gap:18px}a{color:var(--teal)}header nav a{font-size:14px;font-weight:650;text-decoration:none}header nav a[aria-current="page"]{text-decoration:underline;text-underline-offset:5px}
main{padding:12px 0 64px}.hero{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:36px;align-items:end;padding:32px 0 28px}.eyebrow{color:var(--teal);font-size:12px;font-weight:800;letter-spacing:.13em;text-transform:uppercase;margin:0 0 8px}h1{font-size:clamp(34px,5vw,52px);letter-spacing:-.05em;line-height:1.13;color:var(--navy);margin:0 0 16px}.lead{font-size:18px;color:var(--muted);max-width:650px;margin:0}.meta{border-left:3px solid var(--teal);padding-left:18px;font-size:13px;color:var(--muted)}.meta strong{display:block;color:var(--navy);font-size:12px;text-transform:uppercase;letter-spacing:.08em}
.layout{display:grid;grid-template-columns:195px minmax(0,1fr);gap:28px;align-items:start}.toc{position:sticky;top:24px;padding:22px 0}.toc strong{display:block;color:var(--navy);font-size:13px;margin-bottom:11px}.toc a{display:block;text-decoration:none;color:var(--muted);font-size:13px;padding:5px 0}.toc a:hover{text-decoration:underline;color:var(--teal)}.paper{background:var(--white);border:1px solid var(--line);border-radius:20px;padding:clamp(24px,4vw,48px);box-shadow:0 18px 44px rgba(20,43,59,.06)}section+section{border-top:1px solid var(--line);margin-top:30px;padding-top:24px}h2{font-size:21px;line-height:1.3;color:var(--navy);letter-spacing:-.025em;margin:0 0 12px}p{margin:0 0 13px}ul,ol{padding-left:22px;margin:0 0 14px}li{margin:0 0 8px}.note{background:#e8f5f1;border:1px solid #b9dfd3;border-radius:12px;padding:17px 20px;overflow-wrap:anywhere}.footer{border-top:1px solid var(--line);padding:24px 0 40px;color:var(--muted);font-size:13px}.footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.footer nav{display:flex;gap:20px}.footer a{text-decoration:none}
@media(max-width:720px){header{align-items:flex-start;flex-direction:column;gap:12px}.hero{grid-template-columns:1fr;gap:22px;padding-top:20px}.layout{display:block}.toc{position:static;display:flex;gap:10px;overflow:auto;white-space:nowrap;padding:0 0 18px}.toc strong{display:none}.toc a{display:inline-block;padding:6px 11px;border:1px solid var(--line);border-radius:999px;background:var(--white)}.paper{border-radius:16px}.lead{font-size:16px}}@media(max-width:380px){.wrap{width:min(100% - 28px,1000px)}header nav{gap:12px}.paper{padding:20px}}