.learn-chapter[hidden]{display:none}.learn-nav{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:26px 0}.learn-nav label{flex:1;min-width:210px;font-weight:700}.learn-nav select{display:block;width:100%;padding:13px;border:1px solid var(--cr-597083);border-radius:12px;background:var(--cf-0b1622);color:var(--ct-edf6ff);font:inherit;margin-top:6px}.learn-topics{display:flex;gap:10px;overflow-x:auto;padding:10px 2px 18px;scrollbar-width:thin;scrollbar-color:var(--ct-2dadb8) var(--ct-152331)}.learn-topics a{flex:0 0 190px;min-height:83px;padding:12px 15px;border:1px solid var(--cr-425569);border-radius:13px;text-decoration:none;background:var(--cf-111f2c);line-height:1.45;transition:transform .15s}.learn-topics a:hover{transform:translateY(-3px);border-color:var(--cr-5adbbd)}.learn-topics a[aria-current=true]{background:var(--cf-154d43);border-color:var(--cr-74e9c8)}.learn-topics small{display:block;color:var(--ct-92dddb);font-weight:800}.learn-chapter{scroll-margin-top:125px;margin:20px 0 35px}.learn-heading{max-width:940px}.learn-heading h2{font-size:clamp(1.9rem,4vw,3rem);line-height:1.12;margin:18px 0}.learn-heading>p{font-size:1.16rem;color:var(--ct-c6d7e2)}.learn-layout{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);gap:22px;align-items:start}.learn-layout>div{min-width:0}.learn-panel{padding:26px;border:1px solid var(--cr-324c5b);border-radius:22px;background:var(--cf-10212d);margin-bottom:18px}.learn-panel h3{margin:0 0 12px;color:var(--ct-82e8d8)}.learn-panel p{color:var(--ct-d1dce6);margin:0 0 16px}.learn-panel p:last-child{margin-bottom:0}.learn-figure{margin:22px 0;background:var(--cf-f6fbfc);border-radius:14px;padding:14px;overflow:hidden}.learn-figure img{display:block;width:100%;height:auto}.learn-solve{padding:18px;border:1px solid var(--cr-548378);border-radius:13px;background:var(--cf-153c37)}.learn-solve summary{cursor:pointer;font-weight:800;color:var(--ct-beffe8)}.learn-solve p{margin:14px 0 0}.learn-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.learn-meta span{padding:7px 12px;border:1px solid var(--cr-3f5f69);border-radius:999px;color:var(--ct-cff2eb)}.learn-bottom{display:flex;justify-content:space-between;gap:12px;margin:20px 0}.download-filter{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px}.download-filter .lab-button.active{background:var(--cf-076957);border-color:var(--cr-67d8bc)}.download-search{margin:20px 0;width:100%;max-width:640px;min-height:49px;background:var(--cf-0a1622);border:1px solid var(--cr-62778b);border-radius:12px;color:var(--ct-ffffff);padding:12px;font:inherit}.download-card{display:flex;flex-direction:column;min-width:0}.download-card[hidden]{display:none}.download-card h3{font-size:1.35rem;line-height:1.25}.download-card .hero-actions{margin-top:22px}.download-card .lab-button{text-decoration:none;text-align:center}.download-card p{flex:1}.learn-hub-note{display:flex;flex-wrap:wrap;gap:18px;align-items:center;padding:22px;border:1px solid var(--cr-397162);border-radius:20px;background:var(--cf-102e2b);margin:24px 0}.learn-hub-note p{flex:1;margin:0;min-width:230px}.material-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.material-tile{min-height:130px;padding:17px;background:var(--cf-112333);border:1px solid var(--cr-45677a);border-radius:16px;color:var(--ct-e2eef8);font:inherit;text-align:left;cursor:pointer}.material-tile:hover{border-color:var(--cr-59dac1);transform:translateY(-2px)}.material-tile[aria-pressed=true]{background:var(--cf-145449);border-color:var(--cr-93f9de)}.material-tile strong{display:block;font-size:1.05rem}.material-tile small{display:block;color:var(--ct-c4d6df);margin-top:7px}.compare-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.process-path{display:flex;flex-wrap:wrap;gap:12px;padding:0;list-style:none;counter-reset:steps}.process-path li{counter-increment:steps;flex:1;min-width:180px;padding:15px;border:1px solid var(--cr-3f8276);border-radius:14px;background:var(--cf-123b35)}.process-path li:before{content:counter(steps,decimal-leading-zero);display:block;color:var(--ct-80ebcc);font-weight:900}.mass-drawing{font-size:1rem;background:var(--cf-0a1723);padding:18px;border-radius:14px;line-height:1.8}.book-count{color:var(--ct-9adfd6);font-weight:700}.learn-status{color:var(--ct-bde5de);min-height:26px}
.lab-fields [hidden]{display:none}
.page-hero h1,.learn-heading h2,.learn-panel h3,.download-card h3{overflow-wrap:anywhere;hyphens:auto}
@media(max-width:850px){.learn-layout{grid-template-columns:1fr}.material-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.learn-panel{padding:20px}}
@media(max-width:500px){.compare-columns,.material-grid{grid-template-columns:1fr}.learn-nav .lab-button{flex:1}.learn-nav label{order:-1;flex:0 0 100%}.learn-figure{padding:7px}.learn-bottom{flex-wrap:wrap}.learn-bottom .lab-button{flex:1}.learn-panel{padding:17px}.learn-chapter{scroll-margin-top:165px}}
@media print{.learn-chapter[hidden]{display:block}.learn-chapter{break-before:page}.learn-nav,.learn-topics,.learn-bottom,.download-filter,.download-search{display:none}.learn-layout{display:block}.learn-panel{background:var(--cf-ffffff);color:var(--ct-000000);box-shadow:none}.learn-panel p,.learn-panel h3{color:var(--ct-000000)}.learn-heading>p{color:var(--ct-000000)}.learn-solve{background:var(--cf-ffffff)}}

.process-path .lab-button{width:100%;overflow-wrap:anywhere;hyphens:auto}.lab-fields label{min-width:0}