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.chev{transform:rotate(180deg)}.foot-drawer{position:absolute;left:0;right:0;bottom:100%;background:var(--sheet);border-top:1px solid var(--rule);box-shadow:0 -12px 32px -12px #00000059;animation:foot-up .18s ease-out}.foot-drawer[hidden]{display:none}.foot-cols{max-width:1240px;margin:0 auto;padding:22px 20px 20px;display:grid;grid-template-columns:repeat(3,minmax(0,220px));gap:24px}.foot-cols>div{display:grid;align-content:start;gap:7px;font-size:.86rem}.foot-cols h4{margin:0 0 4px;font-size:.7rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}@keyframes foot-up{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@media(max-width:760px){.foot-bar{padding:10px 16px 64px}.foot-cols{grid-template-columns:repeat(2,minmax(0,1fr));padding:18px 16px}}@media(prefers-reduced-motion:reduce){.foot-drawer{animation:none}}.home{--hm-max: 1240px;position:relative;flex:1 0 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auto;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,72px);align-items:center}.home-eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 18px;padding:4px 12px 4px 10px;border:1px solid var(--rule);border-radius:999px;background:color-mix(in srgb,var(--sheet) 70%,transparent);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);font-size:.8rem;font-weight:600;letter-spacing:.04em;color:var(--ink-2)}.live{width:8px;height:8px;border-radius:50%;background:var(--cobalt);box-shadow:0 0 color-mix(in srgb,var(--cobalt) 60%,transparent);animation:live 2.4s infinite}@keyframes live{70%{box-shadow:0 0 0 8px transparent}to{box-shadow:0 0 0 0 transparent}}.home h1{font-size:clamp(2.3rem,4.6vw,3.9rem);font-weight:700;letter-spacing:-.035em;line-height:1.04;margin:0}.home h1 em{font-style:normal;background:linear-gradient(100deg,var(--cobalt) 10%,color-mix(in srgb,var(--cobalt) 45%,var(--ink)) 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20px}.mx-axis{position:absolute;font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);white-space:nowrap}.mx-axis{top:0;left:20px;right:0;display:flex;justify-content:space-between}.mx-axis i{font-style:normal;color:var(--cobalt)}.mx-axis i.down{color:var(--danger)}.mx-grid{display:block;width:100%;height:auto;aspect-ratio:1;cursor:crosshair;border-radius:12px;padding:6px;box-sizing:border-box;background:color-mix(in srgb,var(--sheet) 92%,var(--paper));border:1px solid var(--rule);box-shadow:0 30px 60px -30px color-mix(in srgb,var(--cobalt) 55%,transparent),inset 0 1px color-mix(in srgb,#fff 6%,transparent);transform:perspective(1200px) rotateY(-9deg) rotateX(4deg);transition:transform .5s ease}.mx-frame:hover .mx-grid{transform:none}.mx-grid rect{fill:var(--grid-0);transition:fill .2s}.mx-grid rect.l1{fill:color-mix(in srgb,var(--cobalt) 32%,var(--grid-0))}.mx-grid rect.l2{fill:color-mix(in srgb,var(--cobalt) 50%,var(--grid-0))}.mx-grid 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svg{stroke:var(--cobalt)}.drawer-panel{display:flex;align-items:center;justify-content:space-between;gap:14px 28px;flex-wrap:wrap;padding:16px 20px;min-height:76px;animation:chip .22s ease-out}.drawer-panel p{margin:0;max-width:70ch;color:var(--ink-2)}.drawer-panel p b{color:var(--ink);font-weight:600}.drawer-cta{display:flex;gap:8px;flex:none}.drawer-stats{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px 22px}.drawer-stats li{display:flex;align-items:baseline;gap:6px;color:var(--ink-3);font-size:.88rem}.drawer-stats b{font-size:1.25rem;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em}.amber{color:var(--amber);font-weight:600}@media(max-width:900px){.home-hero{grid-template-columns:1fr}.mx{order:2;margin:0 auto;padding:0;width:min(100%,420px)}.drawer-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}.drawer-tabs button:nth-child(3){border-left:0}.drawer-tabs button:nth-child(-n+2){border-bottom:1px solid 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var(--rule)}.ld-bar-title{display:flex;gap:12px;align-items:flex-start;min-width:0}.ld-bar h1{font-size:1.35rem;font-weight:700;letter-spacing:-.01em}.ld-bar h1 .en{font-weight:500;font-size:.8rem;margin-left:4px}.ld-bar p{margin:3px 0 0;color:var(--ink-2);font-size:.88rem;max-width:75ch;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.topic-icon{display:grid;place-items:center;width:40px;height:40px;border-radius:10px;background:var(--cobalt-soft);color:var(--cobalt);flex:none}.ld-facts{margin:0;display:grid;gap:3px;font-size:.8rem}.ld-facts div{display:grid;grid-template-columns:62px 1fr;gap:6px}.ld-facts dt{color:var(--ink-3);font-weight:600;text-transform:uppercase;font-size:.68rem;letter-spacing:.04em;padding-top:2px}.ld-facts dd{margin:0;color:var(--ink-2)}.ld-strip{flex:none;display:flex;justify-content:space-between;align-items:center;gap:8px 20px;flex-wrap:wrap;padding:7px 18px;border-top:1px solid var(--rule);background:var(--sheet);font-size:.84rem}.ld-strip-links{display:flex;flex-wrap:wrap;gap:6px 18px}.ld-strip-links>span{display:inline-flex;flex-wrap:wrap;align-items:center;gap:5px}.ld-strip-links b{color:var(--ink-3);font-weight:600;margin-right:2px}.ld-strip-pager{display:flex;align-items:center;gap:14px;white-space:nowrap}.ld-strip-pager a{line-height:1.3}.ld-strip-pager .next{font-weight:600}.tlink{display:inline-flex;align-items:center;gap:4px;padding:1px 8px;border-radius:12px;border:1px solid var(--rule);background:var(--sheet);color:var(--ink);text-decoration:none;font-size:.82rem}.tlink:hover{border-color:var(--cobalt);color:var(--cobalt)}.tool-chip{display:inline-block;padding:1px 8px;border-radius:12px;background:var(--amber-soft);color:var(--ink);font-size:.76rem}.linklike{border:0;background:none;padding:0;color:var(--cobalt);text-decoration:underline;cursor:pointer;font-size:inherit}.ld-pane{background:var(--sheet);border:1px solid var(--rule);border-radius:10px;padding:12px 14px;min-height:0;min-width:0}.ld-pane h2{font-size:1.05rem;margin-bottom:6px}.ld-pane h3{font-size:.82rem;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-3);margin:14px 0 6px}.ld-sub{margin:0 0 10px;color:var(--ink-2);font-size:.88rem}.ld-split{display:grid;grid-template-columns:300px minmax(0,1fr);gap:12px}.ld-split.wide{grid-template-columns:380px minmax(0,1fr)}.ld-cols{display:grid;gap:12px}.ld-cols.ld-map{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr)}.ld-cols.three{grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1fr)}.ld-master{display:flex;flex-direction:column;gap:8px;padding:8px}.ld-empty{padding:8px}.ld-list{list-style:none;margin:0;padding:0;display:grid;gap:1px}.ld-list a{display:flex;align-items:center;gap:8px;padding:5px 8px;border-radius:6px;color:var(--ink-2);text-decoration:none;font-size:.9rem;line-height:1.25}.ld-list a:hover{background:var(--paper);color:var(--ink)}.ld-list a.on{background:var(--cobalt-soft);color:var(--ink);font-weight:600;box-shadow:inset 3px 0 0 var(--cobalt)}.ld-list i{font-style:normal;flex:none;min-width:26px;font-size:.78rem;font-weight:700;color:var(--cobalt)}.ld-list.compact a{padding:3px 8px;font-size:.85rem}.ld-list.compact i{min-width:40px}.ld-list.tall a{align-items:flex-start;padding:8px}.ld-list.tall small{display:block;font-weight:400;color:var(--ink-3);font-size:.82rem;margin-top:2px}.ld-list .ld-dot{margin-left:auto;width:7px;height:7px;border-radius:50%;background:var(--cobalt);flex:none}.ld-tree details{border-bottom:1px solid var(--rule);padding:4px 0}.ld-tree summary{cursor:pointer;padding:5px 6px;font-size:.88rem;display:flex;gap:6px;align-items:baseline}.ld-tree summary b{white-space:nowrap}.ld-tree summary i{margin-left:auto;font-style:normal;color:var(--ink-3);font-size:.78rem}.ld-tree-group{margin:2px 0 6px 6px}.ld-tree-gname{display:block;padding:4px 8px 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rect{stroke-width:2}.sf-node.clash rect{fill:color-mix(in srgb,var(--danger) 12%,var(--sheet));stroke:var(--danger);stroke-width:2}.sf-x{font:700 22px var(--font);fill:var(--danger)}.sf-node.solve rect{fill:var(--cobalt-soft);stroke:var(--cobalt);stroke-width:2.5}.sf-node.weak rect{stroke-dasharray:5 4;fill:color-mix(in srgb,var(--sheet) 70%,transparent)}.sf-node.weak .sf-t,.sf-node.weak .sf-k{opacity:.75}.sf-node.pos circle[style]{stroke:var(--sheet);stroke-width:2}.sf-mark{font:700 11px var(--font);fill:#fff}.sf-node.seal>circle:first-child{fill:var(--cobalt-soft);stroke:var(--cobalt);stroke-width:2.5}.sf-node.seal .sf-seal-in{fill:none;stroke:var(--cobalt);stroke-width:1;stroke-dasharray:2 3}.sf-seal-t{font:700 20px var(--font);fill:var(--cobalt)}.sf-seal-s{font:700 8px var(--font-mono, monospace);fill:var(--cobalt);letter-spacing:.04em}.sf-t{font:500 13px var(--font);fill:var(--ink)}.sf-t.strong{font-weight:700;fill:var(--cobalt)}.sf-s{font:11px var(--font);fill:var(--ink-3)}.sf-k{font:700 9.5px var(--font);fill:var(--ink-3);letter-spacing:.05em}.sf-node.solve .sf-k{fill:var(--cobalt)}.sf-q{font:700 24px Georgia,serif;fill:var(--ink-3)}.sflow .dim{opacity:.25;transition:opacity .2s}.sflow g,.sflow path{transition:opacity .2s}@media(prefers-reduced-motion:reduce){.sf-w.flow{animation:none}}.lobby2-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}.stat{display:flex;align-items:baseline;gap:10px;text-align:left;padding:10px 14px;border-radius:var(--r-lg);border:1px solid var(--rule);background:var(--glass-strong);color:var(--ink);cursor:pointer;font:inherit}.stat b{font-size:1.5rem;letter-spacing:-.03em;font-variant-numeric:tabular-nums;color:var(--cobalt)}.stat.warn b{color:var(--coral, var(--cobalt))}.stat.amber b{color:var(--amber)}.stat span{font-size:.82rem;color:var(--ink-2)}.stat:disabled{cursor:default;opacity:.55}.stat.on{border-color:var(--cobalt);box-shadow:0 0 0 1px var(--cobalt) inset}.lobby2-onboard{display:flex;align-items:center;justify-content:space-between;gap:16px 24px;flex-wrap:wrap;padding:18px 20px;border:1px dashed var(--rule);border-radius:var(--r-lg);background:linear-gradient(160deg,var(--cobalt-soft),transparent 70%)}.lobby2-onboard h2{font-size:1.05rem;margin:0 0 10px}.steps{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.88rem;color:var(--ink-2)}.steps li{display:flex;align-items:center;gap:6px}.steps i{font-style:normal;width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:.72rem;font-weight:700;background:var(--cobalt);color:var(--on-cobalt, var(--paper))}.lobby2-bar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:10px 16px;flex-wrap:wrap;padding:8px 0 10px;margin-bottom:8px;background:var(--paper);border-bottom:1px solid var(--rule)}.lobby2-bar h2,.lobby2-samples summary b{font-size:1rem;margin:0}.lobby2-bar h2{display:flex;gap:8px;align-items:baseline}.count{font-size:.78rem;font-weight:600;color:var(--ink-3);background:var(--grid-0);border-radius:10px;padding:1px 8px}.lobby2-tools{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.lobby2-search{min-width:220px;padding:6px 10px;border:1px solid var(--rule);border-radius:8px;background:var(--sheet);color:var(--ink);font:inherit;font-size:.86rem}.lobby2-tools select{padding:6px 8px;border:1px solid var(--rule);border-radius:8px;background:var(--sheet);color:var(--ink);font:inherit;font-size:.86rem}.seg{display:inline-flex;border:1px solid var(--rule);border-radius:8px;overflow:hidden}.seg button{border:0;background:var(--sheet);color:var(--ink-2);padding:5px 10px;cursor:pointer;font-size:.95rem}.seg button.on{background:var(--cobalt);color:var(--on-cobalt, var(--paper))}.lobby2-none,.lobby2-more{margin:14px 0 0;text-align:center;color:var(--ink-2)}.lobby2-samples{border:1px solid var(--rule);border-radius:var(--r-lg);padding:0 14px}.lobby2-samples summary{display:flex;align-items:baseline;gap:10px;padding:11px 0;cursor:pointer;list-style:none}.lobby2-samples summary::-webkit-details-marker{display:none}.lobby2-samples summary:before{content:"▸";color:var(--ink-3);transition:transform .15s}.lobby2-samples[open] summary:before{transform:rotate(90deg)}.lobby2-samples .scards{padding-bottom:14px}.sdialog.wide{width:min(1080px,calc(100vw - 32px))}.scards.list{grid-template-columns:minmax(0,1fr);gap:8px}.scards.list .scard:before{inset:0 auto 0 0;width:4px;height:auto}.scards.list .scard-a{grid-template-columns:minmax(220px,1.4fr) minmax(200px,1fr) minmax(220px,1.2fr);align-items:center;gap:16px;padding:10px 14px 10px 18px}.scards.list .scard.new button{min-height:0;grid-auto-flow:column;justify-content:start;align-items:center;gap:12px;padding:10px 18px}.scards.list .scard.new .tray-sub{display:none}.scards.list .scard-plus{width:30px;height:30px;font-size:1.1rem}@media(max-width:900px){.scards.list .scard-a{grid-template-columns:minmax(0,1fr);gap:8px}}@media(max-width:767px){.lobby2{padding:12px 16px 20px}.lobby2-head h1{font-size:1.3rem}.scards{grid-template-columns:minmax(0,1fr)}.lobby2-search{min-width:0;flex:1 1 140px}.sflow svg,.sflow figcaption{display:none}.sflow-list{display:grid;gap:8px;margin:0;padding:0;list-style:none;font-size:.86rem;color:var(--ink-2)}.sflow-list b{color:var(--ink)}.sdialog-f{flex-wrap:wrap}}