/* Catalog only. Width, header, footer and page background belong to home.css. */
.learn-catalog { --catalog-muted: #62708c; --catalog-line: #e7ebf3; padding-bottom: 24px; }
.learn-catalog *, .learn-catalog *::before, .learn-catalog *::after { box-sizing: border-box; }
.learn-catalog p { color: var(--catalog-muted); }
.learn-catalog .catalog-card { background: rgba(255,255,255,.92); border: 1px solid rgba(255,255,255,.95); border-radius: 17px; min-width: 0; }
.learn-catalog .catalog-intro-bar { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin: 8px 0 24px; }
.learn-catalog .eyebrow { color: #ef334e; font-size: 12px; font-weight: 700; letter-spacing: .07em; margin: 0 0 8px; }
.learn-catalog h1 { font-size: 36px; line-height: 1.3; margin: 0 0 8px; }
.learn-catalog .catalog-intro-bar > div > p:last-child { margin: 0; font-size: 15px; line-height: 1.7; }
.learn-catalog .catalog-search { display: flex; align-items: center; gap: 8px; width: 410px; max-width: 100%; flex-shrink: 0; border: 1px solid #d6deef; border-radius: 30px; padding: 6px 8px 6px 16px; background: rgba(255,255,255,.86); }
.learn-catalog .catalog-search:focus-within { outline: 2px solid #749ef7; outline-offset: 2px; }
.learn-catalog .search-symbol { font-size: 25px; color: #6074a0; line-height: 1; }
.learn-catalog .catalog-search input[type=search] { width: 100%; min-width: 0; border: 0; outline: 0; background: transparent; font: inherit; font-size: 13px; color: #192840; padding: 7px 0; }
.learn-catalog input[type=search]::-webkit-search-cancel-button { display: none; }
.learn-catalog .catalog-search button { border: 0; cursor: pointer; flex-shrink: 0; }
.learn-catalog .search-clear { position: relative; align-self: center; background: transparent; color: #65718c; font-size: 0; line-height: 1; padding: 0; width: 26px; height: 32px; }
.learn-catalog .search-clear::before, .learn-catalog .search-clear::after { content: ''; position: absolute; left: 50%; top: 50%; width: 14px; height: 2px; border-radius: 1px; background: currentColor; transform: translate(-50%, -50%) rotate(45deg); }
.learn-catalog .search-clear::after { transform: translate(-50%, -50%) rotate(-45deg); }
.learn-catalog .search-submit { border-radius: 22px; background: #eef3fb; color: #354b75; padding: 8px 12px; font-size: 13px; }
.learn-catalog .catalog-filter-bar { display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: center; gap: 14px; padding: 16px 20px; margin-bottom: 18px; }
.learn-catalog .catalog-filters { display: flex; flex-wrap: nowrap; gap: 10px; min-width: 0; overflow-x: auto; padding: 4px; scrollbar-width: thin; }
.learn-catalog .catalog-filters > * { flex-shrink: 0; }
.learn-catalog .catalog-filters button { white-space: nowrap; }
.learn-catalog .catalog-search-tab { display: inline-flex; align-items: center; border-radius: 24px; background: #f2f5fb; color: #3b4c70; }
.learn-catalog .catalog-search-tab[data-selected=true] { background: linear-gradient(110deg,#ff526d,#ff9563); color: white; }
.learn-catalog .catalog-filters .catalog-search-tab button { background: transparent; color: inherit; box-shadow: none; }
.learn-catalog .catalog-filters .catalog-search-tab button[aria-pressed=true] { background: transparent; box-shadow: none; }
.learn-catalog .catalog-filters button { display: inline-flex; align-items: center; gap: 8px; border: 1px solid transparent; border-radius: 24px; padding: 10px 16px; font-weight: 650; font-size: 14px; cursor: pointer; background: #f2f5fb; color: #3b4c70; }
.learn-catalog .catalog-filters button[aria-pressed=true] { background: linear-gradient(110deg,#ff526d,#ff9563); color: #fff; box-shadow: 0 3px 10px #ff775429; }
.learn-catalog .filter-count { min-width: 20px; padding: 1px 5px; border-radius: 8px; background: #dde5f566; font-size: 12px; }
.learn-catalog button[aria-pressed=true] .filter-count { background: #ffffff30; }
.learn-catalog #catalog-result-status { font-size: 13px; margin: 0; }
.learn-catalog .catalog-layout { display: grid; grid-template-columns: minmax(0,1fr) 300px; grid-template-rows: auto 1fr auto; gap: 24px; align-items: start; }
.learn-catalog .catalog-main { grid-column: 1; grid-row: 1 / span 2; padding: 24px; }
.learn-catalog h2 { margin: 0; font-size: 23px; line-height: 1.45; }
.learn-catalog .catalog-list-heading { margin-bottom: 16px; }
.learn-catalog .catalog-list-heading p, .learn-catalog .catalog-external header p { margin: 5px 0 0; font-size: 14px; line-height: 1.7; }
.learn-catalog .catalog-stage { scroll-margin-top: 112px; }
.learn-catalog .catalog-stage + .catalog-stage { margin-top: 23px; }
.learn-catalog .catalog-extension { margin-top: 23px; }
.learn-catalog .extension-items { display: grid; gap: 12px; margin-top: 14px; }
.learn-catalog .stage-heading { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 12px; padding: 8px 0 12px 14px; border-bottom: 1px solid var(--catalog-line); position: relative; }
.learn-catalog .stage-heading::before { content: ''; position: absolute; left: 0; top: 12px; width: 4px; height: 22px; border-radius: 4px; background: #ff4f66; }
.learn-catalog .stage-heading > span { font-size: 20px; font-weight: 750; }
.learn-catalog .stage-heading h3 { margin: 0; font-size: 19px; }
.learn-catalog .stage-heading p { margin: 0; font-size: 13px; }
.learn-catalog .catalog-item { display: grid; align-items: center; grid-template-columns: minmax(0,1fr) 18px; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--catalog-line); min-width: 0; }
.learn-catalog .internal-item { grid-template-columns: minmax(0,1fr); }
.learn-catalog .internal-item:has(.catalog-number) { grid-template-columns: 44px minmax(0,1fr); }
.learn-catalog .internal-item:hover, .learn-catalog .internal-item:focus-within { background: #f4f8ff; }
.learn-catalog .catalog-number { display: grid; place-items: center; width: 44px; height: 46px; border-radius: 10px; background: linear-gradient(130deg,#ffe9ef,#ffede5); color: #e33953; font-weight: 750; font-size: 16px; }
.learn-catalog .catalog-item-copy { min-width: 0; }
.learn-catalog .catalog-item h3 { margin: 0; font-size: 18px; line-height: 1.5; overflow-wrap: anywhere; }
.learn-catalog .catalog-item h3 a { color: #0068ed; }
.learn-catalog .catalog-item h3 a:hover { text-decoration: underline; text-underline-offset: 4px; }
.learn-catalog .catalog-summary { margin: 5px 0 0; font-size: 14px; line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.learn-catalog .catalog-arrow { color: #94a3c6; font-size: 20px; }
.learn-catalog .catalog-category { display: inline-block; font-size: 11px; color: #657796; margin-top: 6px; background: #f1f4fa; border-radius: 5px; padding: 2px 6px; }
.learn-catalog[data-category]:not([data-category=all]) .catalog-category { display: none; }
.learn-catalog[data-view=search][data-category] .catalog-category { display: inline-block; color: #315f9e; }
.learn-catalog[data-view=search] .catalog-number { display: none; }
.learn-catalog[data-view=search] .internal-item:has(.catalog-number) { grid-template-columns: minmax(0,1fr); }
.learn-catalog[data-view=search] #catalog-plain-list { display: grid; gap: 12px; }
.learn-catalog[data-view=search] .external-item h3 { font-size: 18px; }
.learn-catalog mark { background: #fff0bb; color: inherit; border-radius: 3px; }
.learn-catalog #catalog-list-title { overflow-wrap: anywhere; }
.learn-catalog .catalog-layout { overflow-anchor: none; }
.learn-catalog .catalog-guidance { grid-column: 2; grid-row: 1; display: grid; gap: 16px; min-width: 0; }
.learn-catalog .catalog-guide { padding: 22px; background: linear-gradient(135deg,#fff7f7,#fff2e8); }
.learn-catalog .catalog-guide > summary { display: none; cursor: pointer; font-weight: 700; }
.learn-catalog .catalog-guide > summary span { float: right; color: var(--catalog-muted); font-size: 12px; font-weight: 400; }
.learn-catalog .catalog-guidance h2 { font-size: 21px; }
.learn-catalog .catalog-guidance p:not(.eyebrow) { font-size: 14px; line-height: 1.8; margin: 8px 0 0; }
.learn-catalog .catalog-stage-links { list-style: none; padding: 0; margin: 22px 0; }
.learn-catalog .catalog-stage-links li { position: relative; }
.learn-catalog .catalog-stage-links li + li { margin-top: 23px; }
.learn-catalog .catalog-stage-links li:not(:last-child)::after { content: ''; position: absolute; top: 40px; left: 18px; height: calc(100% - 16px); width: 1px; background: #f6b7ae; }
.learn-catalog .catalog-stage-links a { display: flex; align-items: center; gap: 15px; }
.learn-catalog .catalog-stage-links a:hover strong { color: #df354b; }
.learn-catalog .guide-step { display: grid; place-items: center; width: 38px; height: 38px; flex-shrink: 0; border-radius: 50%; background: #fff; border: 1px solid #ff6974; color: #ee3c50; font-size: 20px; }
.learn-catalog .catalog-stage-links strong { font-size: 15px; }
.learn-catalog .catalog-stage-links small { display: block; color: var(--catalog-muted); margin-top: 5px; font-size: 13px; }
.learn-catalog .catalog-primary { display: inline-flex; justify-content: center; align-items: center; gap: 10px; padding: 12px 16px; border: 1px solid #ff8d75; border-radius: 10px; background: linear-gradient(110deg,#ff526d,#ff9865); color: #fff; font-size: 15px; font-weight: 650; cursor: pointer; }
.learn-catalog .catalog-guide .catalog-primary { width: 100%; margin-top: 17px; }
.learn-catalog #catalog-start-button .catalog-primary { margin-top: 0; }
.learn-catalog .catalog-reading-tip { padding: 22px; background: linear-gradient(130deg,#f6faff,#eaf4ff); }
.learn-catalog .catalog-reading-tip ul { list-style: none; padding: 0; margin: 19px 0 0; display: grid; gap: 17px; font-size: 14px; color: #415779; }
.learn-catalog .catalog-reading-tip li { display: flex; align-items: center; gap: 12px; }
.learn-catalog .catalog-reading-tip li span { display: grid; place-items: center; background: #d8eaff; color: #0072ee; width: 28px; height: 28px; border-radius: 50%; }
.learn-catalog .catalog-ad { grid-column: 2; grid-row: 2; padding: 14px; }
.learn-catalog .catalog-ad-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; gap: 8px; }
.learn-catalog .catalog-ad-heading h2 { font-size: 18px; }
.learn-catalog .ad-badge { border: 1px solid #dbe0eb; padding: 2px 8px; border-radius: 10px; font-size: 11px; color: #7c87a0; }
.learn-catalog .catalog-ad-media { position: relative; border-radius: 11px; overflow: hidden; background: #edf2f7; }
.learn-catalog .catalog-ad-image { display: block; width: 100%; height: auto; }
.learn-catalog .catalog-ad-placeholder { position: absolute; inset: 0; display: grid; place-items: center; color: #718097; font-size: 13px; }
.learn-catalog [data-ad-state=loaded] .catalog-ad-placeholder { display: none; }
.learn-catalog [data-ad-state=loading] img { opacity: 0; }
.learn-catalog [data-ad-state=error] { aspect-ratio: var(--ad-ratio); }
.learn-catalog [data-ad-state=error] img { display: none; }
.learn-catalog .catalog-ad-cta { display: flex; justify-content: space-between; color: #41628c; font-size: 14px; margin-top: 14px; }
.learn-catalog .catalog-external { grid-column: 1 / -1; grid-row: 3; padding: 24px; }
.learn-catalog[data-external-only=true] .catalog-external { grid-column: 1; grid-row: 1 / span 2; order: 0; }
.learn-catalog[data-external-only=true] .external-grid { grid-template-columns: minmax(0,1fr); }
.learn-catalog .external-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; margin-top: 16px; }
.learn-catalog .external-item,
.learn-catalog[data-view=search] .catalog-item { border: 1px solid #e1e9f7; background: #f8fbff; border-radius: 10px; padding: 14px 16px; }
.learn-catalog .external-item:hover { background: #eff6ff; }
.learn-catalog[data-view=search] .catalog-item:hover,
.learn-catalog[data-view=search] .catalog-item:focus-within { background: #eff6ff; }
.learn-catalog .external-item h3 { font-size: 16px; }
.learn-catalog .external-source { font-size: 12px; line-height: 1.8; margin: 5px 0 0; }
.learn-catalog .external-source span { display: inline-block; margin-left: 8px; }
.learn-catalog .catalog-empty { padding: 34px 8px; text-align: center; }
.learn-catalog .catalog-empty h3 { font-size: 19px; margin: 0; }
.learn-catalog .catalog-empty p { font-size: 14px; line-height: 1.8; }
@media (max-width:1050px) {
  .learn-catalog .catalog-filter-bar { grid-template-columns: minmax(0,1fr); }
  .learn-catalog .catalog-layout { display: flex; flex-direction: column; gap: 18px; }
  .learn-catalog .catalog-layout > * { width: 100%; }
  .learn-catalog .catalog-main { order: 0; }
  .learn-catalog .catalog-guidance { order: 1; gap: 12px; }
  .learn-catalog .catalog-ad { order: 2; }
  .learn-catalog .catalog-external { order: 3; }
  .learn-catalog .catalog-guide { padding: 16px 20px; }
  .learn-catalog .catalog-guide > summary { display: block; }
  .learn-catalog .guide-body { padding-top: 18px; }
  .learn-catalog .catalog-guidance:has(details:not([open])) .catalog-reading-tip { display: none; }
  .learn-catalog .catalog-intro-bar { align-items: flex-start; flex-direction: column; gap: 18px; }
  .learn-catalog .catalog-search { width: 100%; }
  .learn-catalog .catalog-search input[type=search] { font-size: 15px; }
}
@media (max-width:760px) {
  .learn-catalog h1 { font-size: 30px; }
  .learn-catalog .catalog-main, .learn-catalog .catalog-external { padding: 18px 16px; }
  .learn-catalog .catalog-filter-bar { padding: 14px; gap: 12px; }
  .learn-catalog .catalog-filters { gap: 8px; }
  .learn-catalog .catalog-filters button { padding: 8px 11px; font-size: 13px; gap: 5px; }
  .learn-catalog h2 { font-size: 21px; }
  .learn-catalog .internal-item:has(.catalog-number) { grid-template-columns: 36px minmax(0,1fr); gap: 10px; }
  .learn-catalog .catalog-number { width: 36px; height: 40px; font-size: 14px; }
  .learn-catalog .catalog-item { padding-block: 14px; }
  .learn-catalog .catalog-item h3 { font-size: 17px; }
  .learn-catalog .stage-heading { column-gap: 8px; }
  .learn-catalog .stage-heading h3 { font-size: 18px; }
  .learn-catalog .stage-heading p { flex-basis: 100%; padding-left: 30px; }
  .learn-catalog .external-grid { grid-template-columns: minmax(0,1fr); }
  .learn-catalog .catalog-search { gap: 5px; padding-left: 12px; }
  .learn-catalog .catalog-search input[type=search] { font-size: 13px; }
}