.resource-guide{--guide-accent:#65b7ef}.guide-hero{grid-template-columns:minmax(0,1fr) 180px;align-items:center;gap:36px;padding-top:48px;padding-bottom:36px;display:grid}.guide-hero h1{letter-spacing:-.045em;margin:18px 0;font-size:clamp(32px,4.8vw,60px);line-height:1.12}.guide-hero p{color:var(--muted);max-width:760px;line-height:1.8}.guide-breadcrumb{color:var(--muted);flex-wrap:wrap;gap:8px;font-size:13px;display:flex}.guide-kicker{letter-spacing:.12em;color:var(--guide-accent);font-size:11px;font-weight:750}.guide-illustration{width:100%;height:auto}.guide-meta{font-size:12px}.guide-layout{padding-bottom:48px}.learning-map{border:1px solid var(--line);background:var(--panel);border-radius:20px;margin-bottom:32px;padding:28px}.learning-map-heading{justify-content:space-between;align-items:center;gap:16px;display:flex}.learning-map h2{margin:10px 0;font-size:26px}.learning-map p{color:var(--muted);line-height:1.75}.guide-count{white-space:nowrap;border:1px solid var(--line);color:var(--text);border-radius:20px;padding:10px;font-size:12px}.topic-map{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:24px 0;display:grid}.topic-map button{text-align:left;background:var(--panel2);min-width:0;color:var(--text);border:1px solid var(--line);cursor:pointer;border-radius:12px;flex-direction:column;gap:12px;padding:16px;line-height:1.5;display:flex}.topic-map button[aria-pressed=true]{border-color:var(--guide-accent);box-shadow:inset 0 3px var(--guide-accent)}.topic-number{background:var(--bg);width:32px;height:32px;color:var(--guide-accent);border-radius:50%;place-items:center;font-weight:800;display:grid}.topic-preview{border-left:3px solid var(--guide-accent);background:var(--panel2);border-radius:0 12px 12px 0;padding:22px}.topic-preview h3{margin:10px 0}.topic-preview a{color:var(--green);align-items:center;gap:12px;min-height:44px;display:inline-flex}.guide-recall{border-top:1px solid var(--line);margin-top:20px;padding-top:12px}.guide-recall summary,.guide-section details summary{cursor:pointer;min-height:44px;padding:12px 0;font-weight:650}.guide-recall label{align-items:center;gap:12px;min-height:44px;margin-top:16px;display:flex}.guide-recall input{width:20px;height:20px;accent-color:var(--green)}.guide-note{font-size:12px}.guide-reading-progress{color:var(--muted);align-items:center;gap:12px;margin-top:22px;font-size:12px;display:flex}.guide-reading-progress progress{min-width:40px;height:7px;accent-color:var(--green);flex:1}.guide-section{border:1px solid var(--line);background:var(--panel);border-radius:18px;margin:22px 0;padding:clamp(22px,4vw,40px);scroll-margin-top:24px}.guide-section h2{margin:10px 0 22px;font-size:clamp(24px,3vw,32px);line-height:1.3}.guide-section p,.guide-section li{max-width:78ch;color:var(--muted);font-size:16px;line-height:1.85}.guide-section ul{gap:12px;padding-left:22px;display:grid}.guide-section li::marker{color:var(--guide-accent)}.guide-section details{border-top:1px solid var(--line);margin-top:24px;padding-top:8px}.guide-related{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:24px 0;display:grid}.guide-related a{border:1px solid var(--line);background:var(--panel2);color:var(--text);border-radius:14px;padding:22px;line-height:1.6}.guide-related small{color:var(--muted);margin-top:12px;display:block}.resource-guide :is(a,button,input,summary):focus-visible{outline:2px solid var(--guide-accent);outline-offset:4px}:root[data-theme=light] .resource-guide{--guide-accent:#205e8a}@media (max-width:640px){.guide-hero{grid-template-columns:1fr;gap:12px;padding-top:28px}.guide-illustration{grid-row:1;justify-self:end;width:100px}.learning-map{padding:20px}.learning-map-heading{flex-direction:column;align-items:flex-start}.topic-map{grid-template-columns:1fr 1fr}.guide-related{grid-template-columns:1fr}.guide-reading-progress{flex-wrap:wrap}}.guide-cover{margin-top:0;margin-bottom:2rem}.guide-cover img,.guide-diagram img{border-radius:20px;width:100%;height:auto;display:block}.guide-diagram{margin:1.5rem 0}.guide-diagram figcaption{color:var(--muted);margin-top:.75rem;font-size:.85rem}.guide-sources{margin:1rem 0;font-size:.88rem}.guide-sources a{text-underline-offset:3px;text-decoration:underline}