:root {
  --catalog-bg: #f5f7fb;
  --catalog-card: #fff;
  --catalog-text: #10213d;
  --catalog-muted: #607089;
  --catalog-line: #dfe6f0;
  --catalog-brand: #1764c0;
  --catalog-brand-dark: #0c3f82;
  --catalog-soft: #eaf3ff;
  --catalog-green: #137a4a;
  --catalog-shadow: 0 12px 34px rgba(17, 42, 82, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body.catalog-page { margin: 0; color: var(--catalog-text); background: var(--catalog-bg); font-family: Poppins, system-ui, sans-serif; }
.catalog-page a:focus-visible { outline: 3px solid rgba(23, 100, 192, .28); outline-offset: 3px; }
.catalog-shell { width: min(1160px, calc(100% - 32px)); margin: 0 auto; padding: 28px 0 76px; }
.catalog-breadcrumbs { display: flex; gap: 8px; align-items: center; margin: 0 0 18px; overflow-x: auto; color: var(--catalog-muted); font-size: .86rem; white-space: nowrap; scrollbar-width: none; }
.catalog-breadcrumbs::-webkit-scrollbar { display: none; }
.catalog-breadcrumbs a { color: var(--catalog-brand-dark); text-decoration: none; }
.catalog-breadcrumbs svg { width: 15px; height: 15px; flex: 0 0 auto; }

.catalog-landing-logo { display: flex; justify-content: center; min-height: 64px; margin: 4px 0 22px; }
.catalog-landing-logo img { display: block; width: auto; max-width: min(100%, 340px); max-height: 80px; object-fit: contain; }

.catalog-hero { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; padding: clamp(28px, 5vw, 54px); color: #fff; border-radius: 26px; background: linear-gradient(125deg, #102b55, #1557a6 72%, #1a75d2); box-shadow: var(--catalog-shadow); }
.catalog-hero__eyebrow { display: inline-flex; gap: 8px; align-items: center; margin-bottom: 12px; color: #cfe5ff; font-size: .82rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.catalog-hero__eyebrow svg { width: 18px; height: 18px; }
.catalog-hero h1 { max-width: 820px; margin: 0; font-size: clamp(1.85rem, 4vw, 3rem); line-height: 1.12; }
.catalog-hero p { max-width: 760px; margin: 14px 0 0; color: #d7e8fb; line-height: 1.7; }
.catalog-hero p.catalog-alternate-name { margin-top: 7px; color: #a9d0ff; font-size: 1rem; font-weight: 700; }
.catalog-hero__icon { display: grid; place-items: center; width: clamp(92px, 12vw, 142px); aspect-ratio: 1; border: 1px solid rgba(255,255,255,.2); border-radius: 30px; background: rgba(255,255,255,.1); }
.catalog-hero__icon svg { width: 46%; height: 46%; }
.catalog-stats { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
.catalog-stats span { display: inline-flex; gap: 7px; align-items: center; padding: 7px 11px; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; background: rgba(255,255,255,.1); color: #edf6ff; font-size: .82rem; }
.catalog-stats svg { width: 15px; height: 15px; }

.catalog-language-switch { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin: 22px 0 4px; padding: 10px; border: 1px solid var(--catalog-line); border-radius: 14px; background: #fff; }
.catalog-language-switch > span { margin: 0 5px 0 2px; color: var(--catalog-muted); font-size: .76rem; font-weight: 700; }
.catalog-language-switch a { padding: 8px 13px; color: var(--catalog-brand-dark); border: 1px solid #bfd0e5; border-radius: 10px; background: #f8fbff; font-size: .78rem; font-weight: 700; text-decoration: none; }
.catalog-language-switch a.is-active { color: #fff; border-color: var(--catalog-brand); background: var(--catalog-brand); }

.catalog-section { margin-top: 40px; }
.catalog-section__head { display: flex; justify-content: space-between; gap: 18px; align-items: end; margin-bottom: 16px; }
.catalog-section__head h2 { margin: 2px 0 0; font-size: clamp(1.3rem, 3vw, 1.8rem); }
.catalog-section__head p { margin: 5px 0 0; color: var(--catalog-muted); }
.catalog-kicker { color: var(--catalog-brand); font-size: .7rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.catalog-section-count { color: var(--catalog-muted); font-size: .78rem; }

/* Cards use a bounded width so one or two available items stay balanced. */
.catalog-grid,
.catalog-resource-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 340px)); justify-content: center; gap: 14px; }
.catalog-card,
.catalog-resource-card { position: relative; display: flex; gap: 13px; align-items: center; min-width: 0; min-height: 86px; padding: 17px 42px 17px 17px; border: 1px solid var(--catalog-line); border-radius: 16px; background: var(--catalog-card); color: inherit; text-decoration: none; box-shadow: 0 4px 15px rgba(17,42,82,.035); transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
.catalog-card:hover,
.catalog-resource-card:hover { transform: translateY(-2px); border-color: #8ebce9; box-shadow: var(--catalog-shadow); }
.catalog-resource-card--primary { border-color: #92bce8; background: linear-gradient(145deg, #fff, #edf6ff); }
.catalog-card__icon { display: grid; place-items: center; flex: 0 0 44px; width: 44px; height: 44px; border-radius: 12px; color: var(--catalog-brand); background: var(--catalog-soft); }
.catalog-card__icon svg { width: 21px; height: 21px; }
.catalog-card__copy { min-width: 0; flex: 1; }
.catalog-card__copy strong,
.catalog-card__copy small { display: block; }
.catalog-card__copy strong { line-height: 1.35; }
.catalog-card__copy small { margin-top: 4px; overflow: hidden; color: var(--catalog-muted); font-size: .75rem; line-height: 1.4; text-overflow: ellipsis; }
.catalog-card__count { flex: 0 0 auto; padding: 4px 7px; color: var(--catalog-brand-dark); border-radius: 999px; background: var(--catalog-soft); font-size: .7rem; font-weight: 800; }
.catalog-card__arrow { position: absolute; right: 13px; bottom: 12px; width: 15px; height: 15px; color: #8da0b9; }

.catalog-language-families { display: grid; gap: 18px; }
.catalog-language-family { padding: 18px; border: 1px solid #ded6ed; border-radius: 18px; background: linear-gradient(145deg, #fff, #fbf8ff); }
.catalog-language-family__head { display: flex; justify-content: space-between; gap: 16px; align-items: baseline; margin-bottom: 13px; }
.catalog-language-family__head h3 { margin: 0; font-size: 1.08rem; }
.catalog-language-family__head span { color: var(--catalog-muted); font-size: .72rem; }
.catalog-letter-section { display: grid; grid-template-columns: 66px minmax(0, 1fr); gap: 18px; padding: 24px 0; border-top: 1px solid var(--catalog-line); scroll-margin-top: 90px; }
.catalog-letter-heading { align-self: start; position: sticky; top: 88px; display: grid; justify-items: center; gap: 6px; }
.catalog-letter-heading strong { display: grid; width: 50px; height: 50px; place-items: center; color: #fff; border-radius: 14px; background: var(--catalog-brand-dark); font-size: 1.25rem; }
.catalog-letter-heading small { color: var(--catalog-muted); font-size: .62rem; text-align: center; }

.catalog-level-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 360px)); justify-content: center; gap: 16px; }
.catalog-level-card { display: flex; min-height: 190px; flex-direction: column; padding: 20px; border: 1px solid var(--catalog-line); border-radius: 18px; background: #fff; }
.catalog-level-card h3 { display: flex; gap: 9px; align-items: center; margin: 0 0 6px; font-size: 1.08rem; }
.catalog-level-card h3 svg { width: 20px; color: var(--catalog-brand); }
.catalog-level-card p { margin: 0 0 15px; color: var(--catalog-muted); font-size: .88rem; }
.catalog-level-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.catalog-level-links a { display: inline-flex; gap: 7px; padding: 8px 10px; border: 1px solid #b9cce3; border-radius: 9px; color: var(--catalog-brand-dark); background: #f8fbff; text-decoration: none; font-size: .8rem; font-weight: 700; }
.catalog-level-links a span { color: var(--catalog-muted); }
.catalog-level-links a:hover { color: #fff; background: var(--catalog-brand); border-color: var(--catalog-brand); }
.catalog-level-links a:hover span { color: #dcecff; }

.catalog-year { margin-top: 27px; }
.catalog-year__heading { display: flex; gap: 10px; align-items: center; margin: 0 0 12px; }
.catalog-year__heading h2 { margin: 0; font-size: 1.2rem; }
.catalog-year__heading span { color: var(--catalog-muted); font-size: .8rem; }
.catalog-year-archive { margin-top: 28px; border: 1px solid var(--catalog-line); border-radius: 14px; background: #fff; }
.catalog-year-archive > summary { display: grid; grid-template-columns: 1fr auto 20px; gap: 12px; align-items: center; padding: 17px 19px; color: var(--catalog-ink); cursor: pointer; list-style: none; font-weight: 800; }
.catalog-year-archive > summary::-webkit-details-marker { display: none; }
.catalog-year-archive > summary span { display: inline-flex; align-items: center; gap: 8px; }
.catalog-year-archive > summary small { color: var(--catalog-muted); font-weight: 650; }
.catalog-year-archive > summary > svg { width: 18px; transition: transform .18s ease; }
.catalog-year-archive[open] > summary > svg { transform: rotate(180deg); }
.catalog-year-archive__content { padding: 0 18px 20px; border-top: 1px solid var(--catalog-line); }
.catalog-documents { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 270px), 370px)); justify-content: center; gap: 14px; }
.catalog-document { display: grid; grid-template-columns: 72px 1fr; min-width: 0; min-height: 104px; overflow: hidden; border: 1px solid var(--catalog-line); border-radius: 15px; background: #fff; color: inherit; text-decoration: none; }
.catalog-document:hover { border-color: #8ebce9; box-shadow: var(--catalog-shadow); }
.catalog-document__cover { width: 72px; height: 104px; background: #e8edf4; }
.catalog-document__cover img { width: 100%; height: 100%; object-fit: cover; }
.catalog-document__body { min-width: 0; padding: 11px; }
.catalog-document__body h3 { display: -webkit-box; margin: 0 0 9px; overflow: hidden; font-size: .82rem; line-height: 1.4; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.catalog-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.catalog-tag { padding: 3px 7px; border-radius: 6px; color: var(--catalog-brand-dark); background: var(--catalog-soft); font-size: .66rem; font-weight: 700; }
.catalog-tag--memo { color: var(--catalog-green); background: #e3f7ed; }
.catalog-empty { margin-top: 26px; padding: 40px 22px; border: 1px solid var(--catalog-line); border-radius: 18px; background: #fff; color: var(--catalog-muted); text-align: center; }
.catalog-back { display: inline-flex; gap: 7px; align-items: center; margin-top: 22px; color: var(--catalog-brand-dark); font-weight: 700; text-decoration: none; }
.catalog-back svg { width: 17px; }

@media (max-width: 680px) {
  .catalog-shell { width: min(100% - 22px, 1160px); padding-top: 18px; }
  .catalog-landing-logo { min-height: 52px; margin-bottom: 16px; }
  .catalog-landing-logo img { max-height: 64px; }
  .catalog-hero { grid-template-columns: 1fr; padding: 27px 22px; border-radius: 20px; }
  .catalog-hero__icon { display: none; }
  .catalog-section__head { display: block; }
  .catalog-section-count { display: block; margin-top: 8px; }
  .catalog-grid, .catalog-resource-grid, .catalog-level-grid, .catalog-documents { grid-template-columns: minmax(0, 1fr); }
  .catalog-letter-section { grid-template-columns: 1fr; gap: 10px; }
  .catalog-letter-heading { position: static; display: flex; justify-content: flex-start; }
  .catalog-letter-heading strong { width: 42px; height: 42px; }
  .catalog-language-switch > span { flex: 0 0 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .catalog-page * { transition-duration: .01ms !important; }
}