:root {
  --ink: #11182c;
  --muted: #65738e;
  --line: #dfe5f1;
  --paper: #ffffff;
  --wash: #f5f7fc;
  --violet: #5146ed;
  --violet-soft: #f0efff;
  --green: #087b5d;
  --green-soft: #eaf9f3;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: var(--wash);
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; }
a { color: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 20; padding: 10px 14px; background: var(--ink); color: white; border-radius: 10px; }
.skip-link:focus { top: 12px; }

.catalog-header {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 14px clamp(20px, 6vw, 92px);
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
}
.catalog-brand { display: flex; align-items: center; gap: 14px; text-decoration: none; }
.catalog-brand > span:last-child { display: grid; gap: 2px; }
.catalog-brand strong { font-size: 17px; }
.catalog-brand small { color: var(--muted); }
.catalog-mark {
  display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px;
  background: var(--violet); color: white; font: 800 13px/1 ui-monospace, "Cascadia Mono", monospace;
  letter-spacing: .08em; box-shadow: 0 10px 28px rgba(81,70,237,.2);
}
.catalog-header nav { display: flex; align-items: center; gap: 8px; }
.catalog-header nav a { padding: 10px 13px; border-radius: 10px; color: #46516a; font-weight: 700; text-decoration: none; }
.catalog-header nav a:hover, .catalog-header nav a:focus-visible, .catalog-header nav a[aria-current="page"] { color: var(--violet); background: var(--violet-soft); outline: none; }
.directory-menu { position: relative; }
.directory-menu summary { display: flex; align-items: center; gap: 5px; padding: 10px 13px; border-radius: 10px; color: #46516a; cursor: pointer; list-style: none; font-weight: 700; }
.directory-menu summary::-webkit-details-marker { display: none; }
.directory-menu summary:hover, .directory-menu[open] summary { color: var(--violet); background: var(--violet-soft); }
.directory-menu summary span { transition: transform .16s ease; }
.directory-menu[open] summary span { transform: rotate(180deg); }
.directory-menu-panel { position: absolute; z-index: 80; top: calc(100% + 7px); right: 0; min-width: 225px; padding: 6px; border: 1px solid var(--line); border-radius: 12px; background: #fff; box-shadow: 0 16px 36px -18px rgba(15,23,42,.38); }
.directory-menu-panel a { display: block; white-space: nowrap; }

.catalog-shell { width: min(1120px, calc(100% - 32px)); margin: 36px auto 64px; }
.catalog-intro {
  position: relative; overflow: hidden; padding: clamp(28px, 5vw, 58px);
  background: var(--paper); border: 1px solid var(--line); border-radius: 24px;
  box-shadow: 0 18px 50px rgba(26,38,71,.08);
}
.catalog-intro::after {
  content: "35—1"; position: absolute; right: 28px; bottom: -20px;
  color: #f0f1ff; font: 900 clamp(86px, 16vw, 170px)/1 ui-monospace, "Cascadia Mono", monospace;
  letter-spacing: -.09em; pointer-events: none;
}
.catalog-intro > * { position: relative; z-index: 1; }
.catalog-intro > p:first-child { margin: 0 0 12px; color: var(--violet); font: 800 12px/1.4 ui-monospace, "Cascadia Mono", monospace; letter-spacing: .12em; text-transform: uppercase; }
.catalog-intro h1 { max-width: 720px; margin: 0; font-size: clamp(34px, 6vw, 68px); line-height: .98; letter-spacing: -.045em; }
.catalog-index { display: flex; align-items: baseline; gap: 12px; margin-top: 26px; }
.catalog-index strong { color: var(--violet); font: 800 28px/1 ui-monospace, "Cascadia Mono", monospace; }
.catalog-index span, .catalog-note { color: var(--muted); }
.catalog-note { max-width: 700px; margin: 20px 0 0; line-height: 1.6; }

.catalog-pagination { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; margin: 24px 0; }
.catalog-pagination a, .catalog-pagination span { min-width: 42px; min-height: 42px; display: grid; place-items: center; padding: 8px 12px; border: 1px solid var(--line); border-radius: 11px; background: white; text-decoration: none; font-weight: 750; }
.catalog-pagination a:hover, .catalog-pagination a:focus-visible { border-color: var(--violet); color: var(--violet); outline: none; }
.catalog-pagination span { background: var(--violet); border-color: var(--violet); color: white; }

.catalog-list { margin: 0; padding: 0; list-style: none; overflow: hidden; background: white; border: 1px solid var(--line); border-radius: 20px; box-shadow: 0 12px 36px rgba(26,38,71,.06); }
.catalog-item + .catalog-item { border-top: 1px solid var(--line); }
.catalog-item a { display: grid; grid-template-columns: minmax(280px, 1fr) minmax(320px, .9fr); align-items: center; gap: 24px; padding: 17px 22px; text-decoration: none; }
.catalog-item a:hover, .catalog-item a:focus-visible { background: #fafaff; box-shadow: inset 4px 0 var(--violet); outline: none; }
.catalog-number { color: #3930d6; font: 750 15px/1.45 ui-monospace, "Cascadia Mono", "SFMono-Regular", monospace; overflow-wrap: anywhere; }
.catalog-meta { display: grid; grid-template-columns: 1fr auto minmax(92px, auto); align-items: center; gap: 12px; color: var(--muted); font-size: 14px; }
.catalog-status { justify-self: start; padding: 5px 9px; border-radius: 999px; font-weight: 750; font-size: 12px; }
.catalog-status--active { color: var(--green); background: var(--green-soft); }
.catalog-status--archive { color: #665f78; background: #f1f0f5; }
footer { padding: 24px; color: var(--muted); text-align: center; border-top: 1px solid var(--line); background: white; }

@media (max-width: 760px) {
  .catalog-header { align-items: flex-start; flex-direction: column; gap: 12px; padding: 14px 18px; }
  .catalog-header nav { width: 100%; overflow-x: auto; }
  .catalog-item a { grid-template-columns: 1fr; gap: 10px; padding: 16px; }
  .catalog-meta { grid-template-columns: 1fr auto; }
  .catalog-meta time { grid-column: 1 / -1; }
  .catalog-intro::after { opacity: .65; }
}

@media (prefers-reduced-motion: no-preference) {
  .catalog-item a, .catalog-header nav a { transition: color .16s ease, background-color .16s ease, border-color .16s ease; }
}