.subpage { min-height: 100vh; background: radial-gradient(circle at 80% 0, #6e24a526, transparent 32%), var(--bg); }
.subpage-main { padding: 145px clamp(22px, 6vw, 90px) 90px; max-width: 1500px; margin: 0 auto; }
.subpage-hero { display: grid; grid-template-columns: 1fr minmax(280px, .7fr); gap: 42px; align-items: end; margin-bottom: 42px; }
.subpage-hero h1 { margin: 12px 0 0; font: 600 clamp(2.6rem, 6vw, 5.5rem)/1.03 Unbounded; }
.subpage-hero > p { color: var(--muted); font-size: 1.05rem; }
.catalogue-tools { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 32px; }
.book-search { flex: 1 1 310px; min-height: 52px; padding: 0 18px; border: 1px solid var(--line); background: var(--panel); color: white; font: inherit; }
.book-search:focus { outline: 2px solid var(--violet); outline-offset: 2px; }
.catalogue-filters { display: flex; flex-wrap: wrap; gap: 8px; }
.catalogue-filters button { min-height: 52px; padding: 0 18px; border: 1px solid var(--line); background: transparent; color: var(--muted); font: 700 .86rem Manrope; cursor: pointer; }
.catalogue-filters button.active { border-color: var(--violet); color: white; background: #a465ff18; }
.book-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.book-entry { display: grid; grid-template-columns: 170px 1fr; gap: 28px; padding: 24px; border: 1px solid var(--line); background: var(--panel); }
.book-entry .mini-cover { min-height: 245px; }
.book-entry h2 { margin: 12px 0; font: 600 1.45rem/1.25 Unbounded; }
.book-entry p { color: var(--muted); }
.book-entry[hidden] { display: none; }
.empty-books { display: none; padding: 28px; border: 1px solid var(--line); color: var(--muted); }
.empty-books.visible { display: block; }
.pro-table { width: 100%; border-collapse: collapse; border: 1px solid var(--line); background: var(--panel); }
.pro-table th, .pro-table td { padding: 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.pro-table th { color: var(--violet); font: 600 .78rem Unbounded; text-transform: uppercase; }
.pro-table td { color: var(--muted); }
.pro-table strong { color: white; }
.professional-note { margin: 30px 0; padding: 24px; border-left: 3px solid var(--violet); background: #a465ff0d; color: var(--muted); }
.back-link { color: white; text-decoration: none; }
.catalogue-cta { margin-top: 28px; }
.standalone-actions { margin-top: 30px; }
.subpage .topbar nav { display: flex; }
@media (max-width: 900px) { .subpage-hero, .book-list { grid-template-columns: 1fr; } }
@media (max-width: 600px) {
  .subpage .topbar { height: auto; min-height: 82px; align-items: flex-start; padding-top: 18px; }
  .subpage .topbar nav { position: static; padding: 0; background: transparent; flex-direction: row; flex-wrap: wrap; justify-content: flex-end; gap: 8px 14px; max-width: 75%; }
  .subpage .topbar nav a { font-size: .78rem; }
  .subpage-main { padding: 110px 18px 60px; }
  .book-entry { grid-template-columns: 105px 1fr; gap: 16px; padding: 16px; }
  .book-entry .mini-cover { min-height: 170px; padding: 12px; }
  .pro-table, .pro-table tbody, .pro-table tr, .pro-table td { display: block; }
  .pro-table thead { display: none; }
  .pro-table tr { padding: 18px; border-bottom: 1px solid var(--line); }
  .pro-table td { padding: 5px 0; border: 0; }
  .pro-table td::before { content: attr(data-label) ' : '; color: white; font-weight: 700; }
}