:root{--ink:#0c1814;--muted:#53645d;--paper:#f4f6f1;--card:#fff;--line:rgba(12,24,20,.13);--acid:#d8ff54;--court:#0d7055;--shadow:0 24px 70px rgba(20,42,34,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:radial-gradient(circle at 90% 0,rgba(216,255,84,.32),transparent 28rem),linear-gradient(rgba(12,24,20,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(12,24,20,.025) 1px,transparent 1px),var(--paper);background-size:auto,38px 38px,38px 38px,auto;font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}.shell{width:min(1080px,calc(100% - 40px));margin:auto}a{color:inherit}.site-header{display:flex;align-items:center;justify-content:space-between;gap:22px;min-height:76px}.brand{display:flex;align-items:center;gap:10px;font-weight:850;text-decoration:none}.mark{display:grid;place-items:center;width:36px;height:36px;border-radius:11px;background:var(--ink);color:var(--acid);font-size:20px}.site-nav,.lang{display:flex;align-items:center;gap:14px}.site-nav a,.lang a{color:var(--muted);text-decoration:none;font-size:.9rem}.lang a{padding:5px 9px;border:1px solid var(--line);border-radius:999px}.lang a[aria-current="page"]{background:var(--ink);color:var(--acid)}.hero{padding:72px 0 44px}.eyebrow{margin:0 0 13px;color:var(--court);font-size:.78rem;font-weight:850;letter-spacing:.13em;text-transform:uppercase}h1,h2,h3{font-family:"Segoe UI",system-ui,sans-serif;line-height:1.08;letter-spacing:-.04em}h1{max-width:900px;margin:0;font-size:clamp(2.6rem,7vw,5.3rem)}.lede{max-width:760px;margin:24px 0 0;color:var(--muted);font-size:1.16rem}.meta{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}.meta span{padding:6px 10px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.65);font-size:.78rem}.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;align-items:start;padding-bottom:90px}.article{padding:clamp(24px,5vw,52px);border:1px solid var(--line);border-radius:28px;background:rgba(255,255,255,.92);box-shadow:var(--shadow)}.article h2{margin:48px 0 14px;font-size:clamp(1.65rem,4vw,2.5rem)}.article h2:first-child{margin-top:0}.article h3{margin:28px 0 9px;font-size:1.25rem}.article p{margin:0 0 18px}.article ul,.article ol{padding-left:22px}.article li{margin:8px 0}.callout{margin:26px 0;padding:20px;border-left:5px solid var(--acid);border-radius:0 16px 16px 0;background:#eff5dc}.table-wrap{overflow:auto;margin:24px 0}table{width:100%;min-width:620px;border-collapse:collapse}th,td{padding:13px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{font-size:.76rem;letter-spacing:.07em;text-transform:uppercase}.side{position:sticky;top:18px;display:grid;gap:16px}.side-card{padding:21px;border:1px solid var(--line);border-radius:20px;background:rgba(255,255,255,.9)}.side-card h2{margin:0 0 11px;font-size:1.15rem}.side-card a{display:block;padding:8px 0;border-bottom:1px solid var(--line);color:var(--court);text-decoration:none}.side-card a:last-child{border:0}.cta{display:inline-flex;margin-top:8px;padding:12px 17px;border-radius:999px;background:var(--ink);color:white;font-weight:750;text-decoration:none}.hub-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;padding-bottom:90px}.hub-card{display:block;min-height:220px;padding:25px;border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.92);text-decoration:none;box-shadow:0 12px 35px rgba(20,42,34,.06);transition:transform .2s ease}.hub-card:hover{transform:translateY(-3px)}.hub-card small{color:var(--court);font-weight:800;text-transform:uppercase;letter-spacing:.08em}.hub-card h2{margin:28px 0 10px;font-size:1.45rem}.hub-card p{margin:0;color:var(--muted)}.source-note{font-size:.86rem;color:var(--muted)}footer{padding:30px 0 48px;border-top:1px solid var(--line);color:var(--muted);font-size:.86rem}.footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.footer-links{display:flex;gap:14px;flex-wrap:wrap}.footer-links a{text-decoration:none;color:var(--ink)}
.breadcrumbs{display:flex;align-items:center;gap:8px;padding-top:18px;color:var(--muted);font-size:.82rem}.breadcrumbs a{color:var(--court);text-decoration:none}.breadcrumbs span[aria-hidden="true"]{opacity:.5}
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/* Weight and balance topic cluster */
.article{min-width:0}
.quick-answer{margin:0 0 32px;padding:22px 24px;border:1px solid rgba(13,112,85,.2);border-radius:18px;background:linear-gradient(135deg,rgba(216,255,84,.24),rgba(13,112,85,.06))}.quick-answer strong{display:block;margin-bottom:5px;color:var(--court);font-size:.76rem;letter-spacing:.1em;text-transform:uppercase}.quick-answer p{margin:0;font-size:1.04rem}.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:24px 0}.topic-card{display:flex;flex-direction:column;min-height:190px;padding:20px;border:1px solid var(--line);border-radius:18px;background:#f8faf5;text-decoration:none;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}.topic-card:hover{transform:translateY(-3px);border-color:rgba(13,112,85,.35);box-shadow:0 12px 30px rgba(20,42,34,.08)}.topic-card small{color:var(--court);font-weight:800;letter-spacing:.08em;text-transform:uppercase}.topic-card strong{display:block;margin:16px 0 7px;font-size:1.1rem;line-height:1.2}.topic-card span{color:var(--muted);font-size:.9rem;line-height:1.5}.topic-card b{margin-top:auto;padding-top:16px;color:var(--court);font-size:.85rem}.metric-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:24px 0}.metric{padding:18px;border:1px solid var(--line);border-radius:16px;background:#f8faf5}.metric strong{display:block;font-size:1.45rem;line-height:1.1}.metric span{display:block;margin-top:6px;color:var(--muted);font-size:.78rem}.wb-tool{margin:30px 0;padding:clamp(22px,4vw,34px);border-radius:24px;background:var(--ink);color:#f7faf4;overflow:hidden;position:relative}.wb-tool:before{content:"";position:absolute;inset:-100px -120px auto auto;width:300px;height:300px;border-radius:50%;background:rgba(216,255,84,.12)}.wb-tool>*{position:relative}.wb-tool h2{margin:0 0 8px!important;color:white}.wb-tool-intro{margin:0 0 25px!important;color:#b8c8c0}.wb-controls{display:grid;grid-template-columns:1fr 1fr;gap:20px}.wb-control{padding:18px;border:1px solid rgba(255,255,255,.14);border-radius:16px;background:rgba(255,255,255,.05)}.wb-control label{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-weight:750}.wb-control output{color:var(--acid);font-size:1.25rem;font-weight:850}.wb-control input[type=range]{width:100%;margin:18px 0 8px;accent-color:var(--acid)}.range-labels{display:flex;justify-content:space-between;color:#93a69d;font-size:.72rem}.wb-result{display:grid;grid-template-columns:130px 1fr;gap:20px;align-items:center;margin-top:20px;padding:20px;border-radius:18px;background:var(--acid);color:var(--ink)}.wb-score{display:grid;place-items:center;min-height:92px;border:1px solid rgba(12,24,20,.16);border-radius:14px;text-align:center}.wb-score strong{font-size:1.8rem;line-height:1}.wb-score span{font-size:.68rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.wb-result h3{margin:0 0 6px;font-size:1.28rem}.wb-result p{margin:0!important;color:#28362f;font-size:.9rem}.decision-table td:first-child{font-weight:800;white-space:nowrap}.article-nav{display:flex;flex-wrap:wrap;gap:9px;margin:24px 0}.article-nav a{padding:8px 12px;border:1px solid var(--line);border-radius:999px;color:var(--court);font-size:.86rem;text-decoration:none}.faq details{margin:10px 0;border:1px solid var(--line);border-radius:14px;background:#f8faf5}.faq summary{padding:16px 18px;cursor:pointer;font-weight:750}.faq details p{padding:0 18px 17px;margin:0;color:var(--muted)}.formula{display:block;margin:18px 0;padding:18px;border-radius:14px;background:#10261f;color:white;font:700 1.05rem/1.5 ui-monospace,SFMono-Regular,Consolas,monospace}.updated{color:var(--muted);font-size:.8rem}.inline-link{color:var(--court);font-weight:700;text-underline-offset:3px}.compare-bars{display:grid;gap:12px;margin:25px 0}.compare-row{display:grid;grid-template-columns:78px 1fr 86px;gap:12px;align-items:center}.compare-row>span:first-child{font-weight:800}.bar-track{height:14px;border-radius:999px;background:#e5ebe4;overflow:hidden}.bar-fill{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--court),#8db51b)}.compare-row small{color:var(--muted);text-align:right}
@media(max-width:720px){.topic-grid{grid-template-columns:1fr}.topic-card{min-height:0}.metric-strip{grid-template-columns:1fr}.wb-controls{grid-template-columns:1fr}.wb-result{grid-template-columns:1fr}.compare-row{grid-template-columns:65px 1fr}.compare-row small{grid-column:2;text-align:left}.quick-answer{padding:19px}.article-nav{gap:7px}}