.catalog-banner{display:flex;justify-content:space-between;gap:24px;align-items:center;padding:24px;border:1px solid var(--line);border-radius:18px;background:var(--surface);margin:24px 0}.catalog-banner h2,.catalog-card h3{margin:6px 0}.catalog-banner p{margin:6px 0;max-width:68ch}.catalog-shell{padding:28px 0 64px}.catalog-kicker{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.catalog-shell h1{font-size:clamp(30px,5vw,52px);letter-spacing:-.035em;line-height:1.1;max-width:24ch;margin:14px 0 20px}.catalog-lede{font-size:18px;line-height:1.65;max-width:76ch}.catalog-note{font-size:14px;line-height:1.6;color:var(--muted);max-width:85ch}.catalog-stats{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}.catalog-stats>div{border-inline-start:2px solid var(--line);padding:6px 20px;min-width:105px}.catalog-stats strong{display:block;font-size:28px}.catalog-stats span{font-size:13px;color:var(--muted)}.catalog-nav{display:flex;gap:8px;flex-wrap:wrap;margin:24px 0}.catalog-nav a{padding:8px 12px;border:1px solid var(--line);border-radius:9px;text-decoration:none}.catalog-nav a:hover{background:var(--surface)}.catalog-search{display:flex;gap:10px;margin:24px 0}.catalog-search input{flex:1 1;min-width:0;padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink)}.catalog-cover{aspect-ratio:16/9;overflow:hidden;border-radius:10px}.catalog-cover img{display:block;width:100%;height:100%;object-fit:cover}.catalog-subject{scroll-margin-top:24px;margin:48px 0}.catalog-subject h2{font-size:28px;margin-bottom:8px}.catalog-subject>p{max-width:75ch;line-height:1.65}.catalog-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:24px}.catalog-card{padding:22px;border:1px solid var(--line);border-radius:14px;background:var(--surface);display:flex;flex-direction:column;gap:12px;min-width:0}.catalog-card h3{font-size:20px;line-height:1.25}.catalog-card p{line-height:1.55;font-size:14px;margin:0}.catalog-card>a{margin-top:auto;font-weight:600}.catalog-card small{color:var(--muted)}.catalog-panel{border:1px solid var(--line);border-radius:14px;padding:24px;margin:20px 0;background:var(--surface);line-height:1.65}.catalog-panel h2{margin-top:0}.catalog-panel summary{cursor:pointer;font-weight:600}.catalog-nav a:focus-visible,.catalog-panel summary:focus-visible{outline:3px solid var(--caption-accent);outline-offset:4px}.catalog-section-head{display:flex;gap:14px;align-items:center}.catalog-section-head small{color:var(--muted);font-weight:400}.catalog-activities{list-style:none;padding:0}.catalog-activities li{border-top:1px solid var(--line);padding:18px 0}.catalog-activities h3{font-size:17px;margin:6px 0}.catalog-activities p{margin:4px 0;max-width:90ch}.catalog-activities small{text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-size:11px}.catalog-reference{display:grid;gap:14px;padding-inline-start:22px}.catalog-reference p{margin:3px 0;font-size:14px}.catalog-launch{counter-reset:launch;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;list-style:none;padding:0}.catalog-launch li{counter-increment:launch}.catalog-launch li:before{content:counter(launch,decimal-leading-zero);font-size:30px;color:var(--muted)}.catalog-launch h3{margin:0;font-size:22px}.catalog-launch p{margin:5px 0}.catalog-practice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.catalog-practice-grid label{display:flex;flex-direction:column;gap:8px}.catalog-practice-grid input{width:100%;max-width:180px;padding:10px;background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:8px}.catalog-counter{display:flex;flex-wrap:wrap;gap:8px;min-height:34px;margin:12px 0}.catalog-counter span{width:22px;height:22px;border:2px solid var(--ink);border-radius:50%}.catalog-counter span[data-group=b]{background:var(--ink)}.catalog-matrix{display:inline-grid;grid-template-columns:repeat(2,40px);text-align:center;border-inline:2px solid var(--ink);padding:10px;margin:12px}.catalog-code{white-space:pre-wrap;background:var(--bg);border-radius:10px;padding:16px}.catalog-actions{display:flex;gap:12px;flex-wrap:wrap}@media(max-width:900px){.catalog-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.catalog-grid,.catalog-launch,.catalog-practice-grid{grid-template-columns:1fr}.catalog-banner{align-items:flex-start;flex-direction:column}.catalog-panel{padding:18px}.catalog-stats>div{padding:6px 12px}.catalog-search{flex-wrap:wrap}.catalog-search input{flex-basis:70%}}