:root{--ink:#163f37;--muted:#607871;--green:#258a72;--lime:#a8e958;--line:#d8e5dd;--wash:#f3f8f3;--card:#fff;--blue:#507fd0}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;overflow-x:hidden;background:linear-gradient(145deg,#f8fbf5,#edf7fa 55%,#f6f1ff);color:var(--ink);font-family:Arial,Helvetica,sans-serif;line-height:1.7}
a{color:#207864;text-underline-offset:3px}
img{display:block;max-width:100%}
.topbar{min-height:78px;padding:13px max(20px,calc((100vw - 1120px)/2));display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.94);position:sticky;top:0;z-index:20}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:900;line-height:1}.brand img{width:46px;height:46px;border-radius:13px}.brand b{color:var(--green)}.brand small{display:block;margin-top:6px;font-size:9px;letter-spacing:.22em}
.topbar nav{display:flex;flex-wrap:wrap;gap:18px}.topbar nav a{color:#47655d;text-decoration:none;font-weight:700;font-size:14px}
main{width:min(1120px,calc(100% - 32px));margin:auto;padding:28px 0 76px}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:22px;color:var(--muted);font-size:13px}
.hero{padding:clamp(34px,6vw,72px);border:1px solid var(--line);border-radius:30px;background:radial-gradient(circle at 80% 20%,rgba(168,233,88,.28),transparent 32%),linear-gradient(135deg,#fff,#eef8f5 58%,#f1efff);box-shadow:0 24px 70px rgba(40,83,69,.09)}
.eyebrow{margin:0;color:#277c69;font-size:11px;font-weight:900;letter-spacing:.15em;text-transform:uppercase}.hero h1{max-width:900px;margin:10px 0 18px;font-size:clamp(38px,6vw,70px);line-height:1.02;letter-spacing:-.045em}.hero .lead{max-width:800px;margin:0;color:var(--muted);font-size:18px}.byline{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;color:#59736a;font-size:13px}.byline a{font-weight:700}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:26px;margin-top:24px}.article,.toc,.guide-card{min-width:0;border:1px solid var(--line);background:rgba(255,255,255,.94);border-radius:22px}.article{padding:clamp(24px,5vw,52px)}.article h2{margin:42px 0 12px;font-size:clamp(26px,3vw,38px);line-height:1.18;letter-spacing:-.025em}.article h2:first-child{margin-top:0}.article h3{margin:28px 0 8px;font-size:21px}.article p{max-width:820px}.answer{padding:22px 24px;border-left:5px solid var(--green);border-radius:14px;background:#edf8f2}.note{padding:18px 20px;border:1px solid #d6e7dc;border-radius:14px;background:#f4faf5}.warning{border-color:#eadcaf;background:#fffaf0}.toc{height:max-content;padding:22px;position:sticky;top:102px}.toc strong{display:block;margin-bottom:10px}.toc a{display:block;padding:7px 0;text-decoration:none;font-size:13px;border-bottom:1px solid #edf2ee}.toc a:last-child{border:0}
.table-wrap{overflow-x:auto;margin:18px 0 26px;border:1px solid var(--line);border-radius:14px}table{width:100%;min-width:690px;border-collapse:collapse;font-size:14px}caption{padding:13px 16px;text-align:left;font-weight:900;background:#eaf5ee}th,td{padding:12px 14px;border-top:1px solid var(--line);text-align:left;vertical-align:top}thead th{background:#f3f8f4}tbody th{color:#217461}td:last-child{white-space:nowrap}
.checklist li,.sources li{margin:9px 0}.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:11px 18px;border-radius:12px;background:#9ee64f;color:#153f37;text-decoration:none;font-weight:900}.button.secondary{background:#fff;border:1px solid var(--line)}
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:24px}.guide-card{padding:26px}.guide-card h2{margin:8px 0 10px;line-height:1.2}.guide-card p{color:var(--muted)}.guide-card a{font-weight:800}
footer{padding:26px max(20px,calc((100vw - 1120px)/2));display:flex;justify-content:space-between;gap:18px;border-top:1px solid var(--line);background:#fff;color:var(--muted);font-size:13px}
@media(max-width:820px){.topbar{align-items:flex-start;flex-direction:column}.layout{grid-template-columns:minmax(0,1fr)}.toc{position:static;order:-1}.guide-grid{grid-template-columns:1fr}.hero{padding:30px 24px}.article{padding:28px 22px}footer{flex-direction:column}}