:root{--navy:#fbfaf7;--ink:#1c2a38;--paper:#fbfaf7;--line:#d9d4c7;--accent:#c4206e;--eq:#2a7f62;--solid:#2f5f8f;--skin:#c42a72;--buoyancy:#1c2a38;--violet:#6a42c4;--solid-face:#c9dcf5;--solid-wire:#2f5f8f;--solid-edge:#1c2a38;--solid-sky:#fff;--solid-ground:#b8b0a0;--symbol-ground:#fbfaf7;--order-2:#269751;--order-3:#987e16;--order-4:#340788;--order-5:#881407;--order-6:#237d8b;--order-inf:var(--ink);color:var(--ink);background:var(--paper);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}html{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;touch-action:pan-x pan-y;-webkit-text-size-adjust:100%}body{margin:0;padding:0 16px 48px}header{max-width:1200px;margin:24px auto 8px}h1{letter-spacing:.02em;margin:0;font-size:1.6rem}.lead{color:#5b6573;margin:4px 0 0}.controls{max-width:1200px;margin:0 auto}.tabs{margin:6px 0 0;display:block}.tab{border:1px solid var(--line);font:inherit;cursor:pointer;background:#fff;border-radius:999px;padding:4px 10px;font-size:.85rem}.tab.on{border-color:var(--ink);background:var(--ink);color:#fff}.tab .n{opacity:.6;margin-left:2px}.bar{flex-wrap:wrap;align-items:center;gap:16px;margin:12px 0;font-size:.9rem;display:flex}.count{font-weight:600}.filter select{font:inherit;margin-left:4px}.display{flex-wrap:wrap;align-items:flex-start;gap:24px;margin:0 0 12px;display:flex}.renders{gap:8px;display:flex}.centres-button b.skin{color:var(--skin)}.centres-button b.buoyancy{color:var(--buoyancy)}.render:not(.on) img{opacity:.55}.render{border:1px solid var(--line);font:inherit;cursor:pointer;background:#fff;border-radius:8px;flex-direction:column;align-items:center;gap:2px;padding:4px 6px;font-size:.75rem;display:flex}.render img{width:80px;height:50px}.render.on{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}.solids-wrap{max-width:1200px;margin:0 auto;position:relative}.solids-canvas{pointer-events:none;z-index:3;width:100%;height:100%;position:fixed;inset:0}.grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;display:grid}.card{border:1px solid var(--line);color:inherit;background:#fff;border-radius:8px;flex-direction:column;gap:4px;padding:8px 10px 10px;display:flex}.card:hover{border-color:var(--ink)}.sym-3d{aspect-ratio:1;cursor:grab;touch-action:pan-y;border-radius:6px}.sym-focus-3d{touch-action:none}.sym-3d:active{cursor:grabbing}.sym-3d[aria-pressed=true]{outline:1px solid var(--solid);outline-offset:-1px}.sym-3d:focus-visible{outline:2px solid var(--solid);outline-offset:-2px}.card .name{cursor:pointer;font-weight:600}.card .meta{color:#5b6573;font-size:.8rem}.card .verdict{color:var(--accent);font-size:.8rem}.card.eq .verdict{color:var(--eq)}.page-head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:4px 24px;margin:4px 0 12px;display:flex}.page-nav{flex-wrap:wrap;gap:6px 20px;margin-left:auto;font-size:.9rem;display:flex}.page-nav a{color:var(--solid);text-decoration:none}.page-title{margin:0;font-size:1.4rem}.grid.page{display:block}.page-layout{grid-template-columns:minmax(0,620px) minmax(300px,1fr);align-items:start;gap:20px;display:grid}.page-view{border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px}.sym-3d.sym-focus-3d{aspect-ratio:1;width:100%}.data-card{border:1px solid var(--line);background:#fff;border-radius:8px;padding:4px 14px 10px;font-size:.88rem}.data-card h3{text-transform:uppercase;letter-spacing:.06em;color:#5b6573;margin:12px 0 4px;font-size:.8rem}.data-card table{border-collapse:collapse;width:100%}.data-card th{text-align:left;color:#5b6573;vertical-align:top;width:48%;padding:3px 8px 3px 0;font-weight:500}.data-card td{padding:3px 0}.data-card .eq{color:var(--eq);font-weight:600}.data-card .neq{color:var(--accent);font-weight:600}.data-card a{color:var(--solid)}.data-card .hm{color:#5b6573}@media (max-width:760px){.page-layout{grid-template-columns:1fr}}.data-card .ord-2{color:var(--order-2)}.data-card .ord-3{color:var(--order-3)}.data-card .ord-4{color:var(--order-4)}.data-card .ord-5{color:var(--order-5)}.data-card .ord-6{color:var(--order-6)}.data-card .ord-inf{color:var(--order-inf)}.data-card .plane{color:var(--violet)}.data-card [class^=ord-],.data-card .plane,.data-card .centre{font-weight:600}.overbar{text-decoration:overline}.data-card .tip{text-underline-offset:3px;cursor:help;-webkit-text-decoration:underline dotted;text-decoration:underline dotted}.tip-card{z-index:20;width:min(320px,100vw - 16px);color:var(--ink);border:1px solid var(--line);background:#fff;border-radius:10px;padding:10px 12px;font-size:.85rem;line-height:1.4;position:absolute;box-shadow:0 8px 24px #1c2a3829}.tip-card .tip-title{margin-bottom:4px;font-weight:600}.tip-card .tip-figure{background:var(--paper);border-radius:6px;width:100%;height:auto;margin:4px 0 6px;display:block}.tip-card p{margin:0 0 6px}.tip-card .tip-link{color:var(--solid);font-size:.8rem;text-decoration:none}.tip-card .tip-link:hover{text-decoration:underline}.title-bar{justify-content:space-between;align-items:center;gap:16px;display:flex}.title-bar .proof{margin-left:auto}.title-bar h1 a{color:inherit;cursor:pointer;text-decoration:none}.card-note{border-top:1px solid var(--line);color:#5b6573;margin:12px 0 0;padding-top:8px;font-size:.8rem}.group-lead{color:#5b6573;margin:0 0 6px;font-size:.8rem}.proof-link{color:var(--solid);border-bottom:1px solid var(--line);font-size:.9rem;text-decoration:none}.proof-link:hover{border-bottom-color:var(--solid)}.lang-switch{border:1px solid var(--line);border-radius:999px;display:flex;overflow:hidden}.lang-switch .lang{font:inherit;cursor:pointer;color:var(--ink);background:#fff;border:0;padding:4px 10px;font-size:.8rem}.lang-switch .lang.on{background:var(--ink);color:#fff}.filter-row{flex-wrap:wrap;align-items:center;gap:6px;margin:10px 0 0;display:flex}.filter-row .row-label{text-transform:uppercase;letter-spacing:.06em;color:#5b6573;width:92px;font-size:.75rem}.family-intro{max-width:80ch;margin:0 0 14px;font-size:.92rem;line-height:1.5}.family-intro h2{margin:4px 0 2px;font-size:1.25rem}.family-intro p{margin:0}.family-intro a{color:var(--solid);white-space:nowrap;text-decoration:none}.grid .group-head{grid-column:1/-1;margin:14px 0 0;font-size:1rem}.grid .group-head:first-child{margin-top:0}.grid .group-head .n{color:#5b6573;margin-left:6px;font-size:.85rem;font-weight:400}.tab.out{border-color:var(--accent);color:var(--accent);text-decoration:line-through}.tab.out .n{text-decoration:none;display:inline-block}.page-view{position:relative}.spin-button{z-index:4;border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:50%;place-items:center;width:34px;height:34px;padding:0;display:grid;position:absolute;bottom:18px;left:18px}.spin-button:hover{border-color:var(--ink)}.fold-toggle{display:none}@media (max-width:700px){.fold-toggle{border:1px solid var(--line);width:100%;font:inherit;color:var(--ink);cursor:pointer;background:#fff;border-radius:8px;justify-content:space-between;align-items:center;margin:0 0 8px;padding:10px 12px;display:flex}.fold-toggle:after{content:"▾";transition:transform .15s}.fold.open .fold-toggle:after{transform:rotate(180deg)}.fold:not(.open) .fold-body{display:none}h1{font-size:1.3rem}.proof-link{white-space:nowrap;font-size:.8rem}.display{gap:12px}.renders{flex-wrap:wrap}.grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.card{min-width:0}.card .meta{display:none}.card .name{-webkit-hyphens:auto;hyphens:auto;overflow-wrap:anywhere}}.compact-toggle{color:var(--ink);align-self:flex-start}.compact-toggle svg{width:80px;height:50px}.display.compact{gap:10px}.display.compact .render{padding:3px}.display.compact .render span{display:none}.display.compact .render img,.display.compact .render svg{width:40px;height:25px}.share{border:1px solid var(--line);background:#fff;border-radius:8px;margin:12px 0 0;padding:12px 14px}.share h3{letter-spacing:.08em;text-transform:uppercase;color:#5b6573;margin:0 0 8px;font-size:.75rem}.share-row{grid-template-columns:4.5rem minmax(0,1fr) auto;align-items:center;gap:8px;margin:6px 0;font-size:.85rem;display:grid}.share-row input{min-width:0;font:inherit;border:1px solid var(--line);color:var(--ink);background:var(--paper);-webkit-user-select:text;user-select:text;border-radius:6px;padding:5px 8px;font-size:.8rem}.share-copy,.share-native{font:inherit;border:1px solid var(--line);color:var(--ink);cursor:pointer;background:#fff;border-radius:6px;padding:5px 10px;font-size:.8rem}.share-native{border-color:var(--solid);width:100%;color:var(--solid);margin-top:6px;padding:8px}body.embed{padding:0;overflow:hidden}.embed-view{place-items:center;height:100vh;display:grid}.embed-view .sym-focus-3d{border-radius:0;outline:none;width:min(100vw,100vh)}.embed-link{z-index:4;color:var(--solid);background:color-mix(in srgb, var(--paper) 80%, transparent);border-radius:4px;padding:2px 6px;font-size:.75rem;text-decoration:none;position:fixed;bottom:6px;right:8px}