:root{--ink:#17232d;--muted:#5d6a73;--paper:#fbfaf6;--card:#fff;--teal:#176b68;--teal2:#0e4f4c;--line:#dce3df;--warm:#f2efe6}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--paper);color:var(--ink);line-height:1.65}
a{color:var(--teal);text-decoration-thickness:1px;text-underline-offset:3px}header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.wrap{max-width:1120px;margin:auto;padding:0 22px}.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800}.mark{width:34px;height:34px;border:2px solid var(--teal);border-radius:50%;display:grid;place-items:center;color:var(--teal)}
nav{display:flex;gap:18px;flex-wrap:wrap}nav a{text-decoration:none;color:var(--ink);font-size:.94rem}.hero{padding:72px 0 44px;background:linear-gradient(180deg,#eef5f2 0%,var(--paper) 100%)}h1{font-size:clamp(2.2rem,5vw,4.3rem);line-height:1.02;letter-spacing:-.045em;margin:.2em 0}.lead{font-size:1.18rem;max-width:760px;color:var(--muted)}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.75rem;font-weight:800;color:var(--teal)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:30px 0}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px}.card h2,.card h3{margin-top:0}.btn{display:inline-block;background:var(--teal);color:white;text-decoration:none;font-weight:800;padding:13px 18px;border-radius:10px}.btn:hover{background:var(--teal2)}
main article{max-width:800px;padding:48px 22px 70px;margin:auto}article h1{font-size:clamp(2.1rem,5vw,3.7rem)}article h2{margin-top:2.2em;font-size:1.65rem;line-height:1.2}article h3{margin-top:1.7em}.note,.disclosure{background:var(--warm);border-left:4px solid var(--teal);padding:16px 18px;border-radius:8px;margin:24px 0}.disclosure{font-size:.93rem}.toc{background:white;border:1px solid var(--line);padding:18px 22px;border-radius:12px}.toc a{display:block;margin:5px 0}
table{width:100%;border-collapse:collapse;margin:24px 0;background:white}th,td{padding:12px;border:1px solid var(--line);text-align:left;vertical-align:top}th{background:#eef5f2}
footer{border-top:1px solid var(--line);padding:38px 0;color:var(--muted);font-size:.9rem}.breadcrumbs{font-size:.85rem;color:var(--muted);margin-bottom:18px}.cta{background:#e9f3f1;border:1px solid #c9dfdb;border-radius:14px;padding:22px;margin:28px 0}.cta h3{margin-top:0}.meta{color:var(--muted);font-size:.9rem}
@media(max-width:800px){.grid{grid-template-columns:1fr}.nav{align-items:flex-start;padding:14px 0;flex-direction:column}nav{padding-bottom:8px}.hero{padding-top:46px}}