:root{--bg:#f5f3ee;--surface:#fff;--ink:#182630;--muted:#5d6d76;--accent:#275f59;--accent2:#173d39;--soft:#e8f1ef;--line:#dce4e1;--warn:#fff5d9}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.72 Arial,sans-serif}a{color:var(--accent);text-underline-offset:3px}.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.site-header-inner{max-width:1120px;margin:auto;padding:16px 24px;display:flex;justify-content:space-between;align-items:center;gap:22px}.brand{color:var(--ink);font-size:21px;font-weight:900;text-decoration:none}.brand span{color:var(--accent)}.site-header nav{display:flex;gap:17px;flex-wrap:wrap}.site-header nav a{font-size:14px;font-weight:700;text-decoration:none}.shell{max-width:1120px;margin:auto;padding:42px 24px 80px}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:26px}.hero{background:linear-gradient(135deg,#fff,var(--soft));border:1px solid var(--line);border-radius:25px;padding:clamp(28px,5vw,56px)}.eyebrow{margin:0;color:var(--accent);text-transform:uppercase;letter-spacing:.13em;font-size:12px;font-weight:900}h1{font:600 clamp(2.35rem,6vw,4.8rem)/1.02 Georgia,serif;letter-spacing:-.045em;margin:12px 0 20px;max-width:930px}h2{font:600 clamp(1.55rem,3vw,2.15rem)/1.18 Georgia,serif;letter-spacing:-.02em}.lead{font-size:19px;color:var(--muted);max-width:830px}.meta{display:flex;gap:9px 22px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-top:22px}.notice{background:var(--warn);border-left:4px solid #bd8b1c;padding:15px 18px;margin:24px 0}.resource-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px}.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:25px;display:flex;flex-direction:column}.card .category{color:var(--accent);font-size:11px;font-weight:900;text-transform:uppercase;letter-spacing:.1em}.card h2{font-size:1.55rem;margin:10px 0}.card p{color:var(--muted);margin:0 0 18px}.card a{font-weight:800;margin-top:auto}.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:38px;margin-top:34px;align-items:start}.article-body{min-width:0}.article-body section{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;margin-bottom:18px;scroll-margin-top:90px}.article-body section h2{margin:0 0 14px}.article-body p{color:#40525d}.article-body li{margin:7px 0;color:#40525d}.toc{position:sticky;top:84px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.toc strong{display:block;margin-bottom:10px}.toc a{display:block;font-size:14px;margin:8px 0;text-decoration:none}.callout{background:var(--soft);border-left:4px solid var(--accent);padding:15px 17px;margin:18px 0}.formula{font:700 1.05rem/1.5 ui-monospace,SFMono-Regular,Consolas,monospace;background:#172a2d;color:#eef8f5;border-radius:12px;padding:17px;overflow:auto}.table-wrap{overflow-x:auto;margin:18px 0}table{width:100%;border-collapse:collapse;font-size:14px}th,td{border:1px solid var(--line);padding:11px;text-align:left;vertical-align:top}th{background:var(--soft)}.checklist{list-style:none;padding:0}.checklist li{padding:8px 0 8px 30px;position:relative}.checklist li::before{content:'□';position:absolute;left:3px;color:var(--accent);font-size:20px}.related,.references{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;margin-top:20px}.related-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.related-links a{border:1px solid var(--line);border-radius:10px;padding:12px;text-decoration:none;font-weight:700}.references ol{padding-left:22px}.references li{margin:12px 0}.references small{display:block;color:var(--muted)}.faq details{border-top:1px solid var(--line);padding:14px 0}.faq summary{font-weight:800;cursor:pointer}.author-box{background:var(--soft);border-radius:14px;padding:18px;margin-top:20px}.cta-row{display:flex;gap:10px;flex-wrap:wrap}.button{display:inline-block;background:var(--accent);color:#fff;border-radius:9px;padding:10px 14px;font-weight:800;text-decoration:none}.button.secondary{background:#fff;color:var(--accent);border:1px solid var(--accent)}footer{border-top:1px solid var(--line);padding:34px 24px;text-align:center;color:var(--muted);font-size:13px}@media(max-width:800px){.site-header-inner{align-items:flex-start;flex-direction:column}.shell{padding-top:24px}.resource-grid,.related-links{grid-template-columns:1fr}.article-grid{grid-template-columns:1fr}.toc{position:static;order:-1}.article-body section{padding:22px}.hero{padding:28px 22px}}@media print{.site-header,footer,.toc,.related,.cta-row{display:none!important}.shell{max-width:none;padding:0}.hero,.article-body section,.references{border:0;padding:0}.article-grid{display:block}.checklist li{break-inside:avoid}}