:root {
  --ink: #dfe5e5;
  --muted: #899396;
  --faint: #596467;
  --canvas: #111518;
  --surface: #181e21;
  --surface-raised: #20282b;
  --line: #2e393c;
  --accent: #d3a75f;
  --accent-soft: #76613d;
  --red: #b85d4e;
  --green: #76a48d;
  --sans: "Segoe UI", "Microsoft YaHei", sans-serif;
  --serif: "Noto Serif SC", "Songti SC", "STSong", serif;
}

* { box-sizing: border-box; }

html { background: var(--canvas); }

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--canvas);
  font-family: var(--sans);
}

button, input { font: inherit; }
button { color: inherit; }

button:focus-visible, input:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app-shell { min-height: 100vh; }

.topbar {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 34px;
  border-bottom: 1px solid var(--line);
  background: #13191c;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font: 700 10px/1 var(--sans);
  letter-spacing: 1px;
}

.brand-name, .brand-subtitle { display: block; }
.brand-name { font: 700 15px/1.3 var(--serif); letter-spacing: .08em; }
.brand-subtitle { margin-top: 3px; color: var(--muted); font-size: 9px; letter-spacing: .2em; }

.topbar-meta { display: flex; align-items: center; gap: 18px; color: var(--muted); font-size: 12px; }
.build-badge { display: inline-flex; align-items: center; gap: 7px; color: var(--accent); font-size: 10px; letter-spacing: .12em; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 3px rgba(118, 164, 141, .12); }
.edition { padding-left: 18px; border-left: 1px solid var(--line); }

.workspace { display: grid; grid-template-columns: 248px minmax(0, 1fr); min-height: calc(100vh - 76px); }

.sidebar { display: flex; flex-direction: column; padding: 34px 20px 24px; border-right: 1px solid var(--line); background: #151a1d; }
.sidebar-intro { padding: 0 12px; }
.eyebrow, .section-label { color: var(--accent); font-size: 10px; letter-spacing: .17em; text-transform: uppercase; }
.sidebar h1 { margin: 15px 0 14px; font: 700 26px/1.26 var(--serif); letter-spacing: .03em; }
.sidebar-intro p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; }

.side-nav { display: grid; gap: 3px; margin: 38px 0 32px; }
.nav-item {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 11px 12px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  text-align: left;
  font-size: 12px;
}
.nav-item:hover { color: var(--ink); background: rgba(255,255,255,.03); }
.nav-item.is-active { border-color: var(--line); background: var(--surface-raised); color: var(--ink); }
.nav-item.is-active .nav-icon { color: var(--accent); }
.nav-icon { color: var(--faint); font-size: 16px; }
.nav-count { color: var(--faint); font: 11px var(--sans); }

.sidebar-section { padding: 22px 12px; border-top: 1px solid var(--line); }
.scope-stat { display: flex; align-items: baseline; justify-content: space-between; padding-top: 16px; }
.scope-stat strong { color: var(--ink); font: 700 24px/1 var(--serif); }
.scope-stat span { color: var(--muted); font-size: 11px; }
.format-row { display: flex; justify-content: space-between; padding-top: 13px; color: var(--muted); font-size: 11px; }
.format-row b { color: var(--ink); font-size: 10px; font-weight: 600; letter-spacing: .08em; }
.sidebar-footnote { display: flex; align-items: center; gap: 9px; margin: auto 12px 0; color: var(--faint); font-size: 10px; line-height: 1.5; }
.signal-line { width: 24px; height: 1px; background: var(--accent); }

.catalog { min-width: 0; padding: 40px clamp(22px, 4vw, 64px) 64px; }
.catalog-header { display: flex; justify-content: space-between; gap: 24px; align-items: end; }
.catalog h2 { margin: 9px 0 0; font: 700 clamp(28px, 3vw, 42px)/1 var(--serif); letter-spacing: .02em; }
.catalog-actions { display: flex; align-items: center; gap: 8px; }
.collection-switcher { display: flex; gap: 2px; margin-top: 24px; border-bottom: 1px solid var(--line); }
.search-box { display: flex; align-items: center; gap: 8px; min-width: min(310px, 45vw); padding: 9px 11px; border: 1px solid var(--line); background: var(--surface); }
.search-icon { color: var(--accent); font-size: 19px; line-height: 1; transform: rotate(-20deg); }
.search-box input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: 12px; }
.search-box input::placeholder { color: var(--faint); }
.icon-button, .close-button { display: grid; place-items: center; border: 1px solid var(--line); background: transparent; color: var(--muted); cursor: pointer; }
.icon-button { width: 38px; height: 38px; font-size: 20px; }
.icon-button:hover, .close-button:hover { border-color: var(--accent); color: var(--accent); }

.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin: 33px 0 22px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.secondary-toolbar { display: flex; justify-content: space-between; gap: 14px; margin: -10px 0 22px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.filter-pills { display: flex; align-items: center; gap: 5px; flex-wrap: wrap; }
.filter-pill { border: 1px solid transparent; background: transparent; color: var(--muted); cursor: pointer; font-size: 11px; }
.filter-pill { padding: 6px 9px; }
.filter-pill:hover { color: var(--ink); }
.filter-pill.is-active { border-color: var(--accent-soft); color: var(--accent); }

.loading-state { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 16px; }
.loading-state[hidden] { display: none !important; }
.loading-card { aspect-ratio: 2 / 3; border: 1px solid var(--line); background: var(--surface-raised); animation: skeleton-pulse 1.2s ease-in-out infinite alternate; }
.loading-card:nth-child(2n) { animation-delay: .15s; }
.loading-card:nth-child(3n) { animation-delay: .3s; }
@keyframes skeleton-pulse { from { opacity: .45; } to { opacity: .9; } }
.load-more-wrap { display: flex; justify-content: center; margin-top: 24px; }
.load-more-wrap[hidden] { display: none; }
.load-more-button { min-width: 160px; padding: 10px 18px; border: 1px solid var(--line); background: var(--surface); color: var(--muted); cursor: pointer; font-size: 11px; }
.load-more-button:hover { border-color: var(--accent); color: var(--accent); }
.asset-visual.is-image-error, .detail-visual.is-image-error { display: grid; place-items: center; }
.asset-visual.is-image-error::before, .detail-visual.is-image-error::before { content: "暂不可用"; color: var(--faint); font-size: 11px; letter-spacing: .12em; }
.catalog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 16px; }
.asset-card { min-width: 0; border: 1px solid var(--line); background: var(--surface); cursor: pointer; transition: border-color .2s ease, transform .2s ease, background .2s ease; }
.asset-card:hover, .asset-card:focus-visible { border-color: var(--accent-soft); background: var(--surface-raised); transform: translateY(-2px); }
.asset-card.is-selected { border-color: var(--accent); background: var(--surface-raised); box-shadow: inset 0 0 0 1px rgba(211,167,95,.18); }
.asset-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.asset-visual { position: relative; overflow: hidden; background: #20282a; aspect-ratio: 2 / 3; }
.asset-visual img { width: 100%; height: 100%; display: block; object-fit: cover; object-position: center; filter: saturate(.88); }
.asset-visual::after { position: absolute; inset: 0; content: ""; pointer-events: none; border: 1px solid rgba(255,255,255,.06); }
.visual-index { position: absolute; right: 10px; bottom: 9px; z-index: 1; color: rgba(255,255,255,.62); font: 10px var(--sans); letter-spacing: .1em; }
.placeholder-visual { position: absolute; inset: 0; display: grid; place-items: center; padding: 20px; overflow: hidden; background: radial-gradient(circle at 58% 34%, #384244, #20282a 58%, #14191b 100%); }
.placeholder-visual::before, .placeholder-visual::after { position: absolute; content: ""; border: 1px solid rgba(211,167,95,.27); transform: rotate(45deg); }
.placeholder-visual::before { width: 160px; height: 160px; }
.placeholder-visual::after { width: 230px; height: 230px; }
.placeholder-content { position: relative; z-index: 1; text-align: center; }
.placeholder-star { color: var(--accent); font-size: 11px; letter-spacing: .18em; }
.placeholder-name { margin: 14px 0 8px; color: var(--ink); font: 700 30px/1 var(--serif); }
.placeholder-copy { color: var(--muted); font-size: 10px; letter-spacing: .12em; }
.asset-meta { padding: 14px 14px 15px; }
.asset-title-line { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.asset-name { margin: 0; color: var(--ink); font: 700 17px/1.2 var(--serif); }
.asset-rank { color: var(--accent); font-size: 10px; }
.asset-epithet { margin-top: 5px; color: var(--muted); font-size: 11px; }
.asset-footer { display: flex; justify-content: space-between; gap: 8px; margin-top: 14px; color: var(--faint); font-size: 10px; }
.asset-footer span:last-child { color: var(--green); }

.empty-state { padding: 70px 20px; border: 1px dashed var(--line); text-align: center; }
.empty-mark { color: var(--accent); font-size: 28px; }
.empty-state h3 { margin: 14px 0 6px; font: 700 21px var(--serif); }
.empty-state p { margin: 0; color: var(--muted); font-size: 12px; }

.detail-panel { position: fixed; z-index: 5; top: 0; right: 0; bottom: 0; width: min(460px, 100vw); overflow-y: auto; padding: 28px 30px 44px; border-left: 1px solid var(--line); background: #171d20; box-shadow: -24px 0 60px rgba(0,0,0,.25); transform: translateX(100%); transition: transform .25s ease; }
.detail-panel.is-open { transform: translateX(0); }
.close-button { width: 34px; height: 34px; margin-left: auto; font-size: 23px; line-height: 1; }
.detail-kicker { margin-top: 32px; color: var(--accent); font-size: 10px; letter-spacing: .16em; }
.detail-title { margin: 9px 0 5px; font: 700 36px/1.1 var(--serif); }
.detail-subtitle { color: var(--muted); font-size: 13px; }
.detail-visual { margin: 24px 0; aspect-ratio: 2 / 3; overflow: hidden; background: #20282a; }
.detail-visual img { width: 100%; height: 100%; object-fit: contain; }
.detail-visual .placeholder-visual { position: relative; }
.detail-section { padding: 20px 0; border-top: 1px solid var(--line); }
.detail-section h3 { margin: 0 0 13px; color: var(--accent); font-size: 10px; letter-spacing: .16em; font-weight: 600; text-transform: uppercase; }
.detail-section p { margin: 0; color: var(--ink); font-size: 12px; line-height: 1.8; }
.recognition-section { border-top-color: var(--accent-soft); background: rgba(211,167,95,.035); }
.research-pending { border-left: 2px solid var(--red); padding-left: 12px; }
.source-evidence-list { display: grid; gap: 10px; }
.source-evidence { padding: 11px 12px; border-left: 2px solid var(--green); background: rgba(118,164,141,.06); }
.source-evidence p { margin: 0 0 8px; }
.source-evidence a { color: var(--accent); font-size: 10px; text-decoration: none; }
.source-evidence a:hover { text-decoration: underline; }
.anchor-group { margin-bottom: 13px; }
.anchor-group > span { display: block; margin-bottom: 6px; color: var(--faint); font-size: 10px; letter-spacing: .08em; }
.anchor-group > div { display: block; color: var(--ink); font-size: 11px; line-height: 1.8; }
.anchor-group b { display: inline; padding: 0; border: 0; color: var(--ink); font-size: 11px; font-weight: 500; line-height: inherit; }
.anchor-group b:not(:last-child)::after { content: " / "; color: var(--faint); }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px 18px; }
.detail-field span { display: block; margin-bottom: 4px; color: var(--faint); font-size: 10px; }
.detail-field b { color: var(--ink); font-size: 12px; font-weight: 500; line-height: 1.55; }
.biography-section { background: rgba(211,167,95,.035); }
.biography-block { margin-bottom: 15px; }
.biography-block span, .moment-list > span { display: block; margin-bottom: 5px; color: var(--faint); font-size: 10px; letter-spacing: .08em; }
.biography-block p { color: var(--ink); }
.moment-list > div { display: flex; flex-wrap: wrap; gap: 6px; }
.moment-list b { padding: 5px 7px; border: 1px solid var(--accent-soft); color: var(--accent); font-size: 10px; font-weight: 500; }
.asset-plan-list { display: grid; gap: 8px; }
.asset-plan-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,.05); color: var(--ink); font-size: 11px; }
.asset-plan-row b { color: var(--accent); font-size: 10px; font-weight: 500; letter-spacing: .05em; }
.tag-list { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { padding: 5px 7px; border: 1px solid var(--line); color: var(--muted); font-size: 10px; }
.evidence-list { display: flex; flex-wrap: wrap; gap: 6px; }
.evidence { padding: 5px 7px; color: var(--green); background: rgba(118,164,141,.1); font-size: 10px; }
.prompt-box { padding: 12px; border-left: 2px solid var(--accent); background: #13191b; color: var(--muted); font-size: 11px; line-height: 1.7; }
.asset-status-list { display: grid; gap: 7px; }

@media (max-width: 960px) {
  .workspace { grid-template-columns: 210px minmax(0, 1fr); }
  .catalog { padding-inline: 28px; }
  .loading-state { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 16px; }
.loading-card { aspect-ratio: 2 / 3; border: 1px solid var(--line); background: var(--surface-raised); animation: skeleton-pulse 1.2s ease-in-out infinite alternate; }
.loading-card:nth-child(2n) { animation-delay: .15s; }
.loading-card:nth-child(3n) { animation-delay: .3s; }
@keyframes skeleton-pulse { from { opacity: .45; } to { opacity: .9; } }
.load-more-wrap { display: flex; justify-content: center; margin-top: 24px; }
.load-more-wrap[hidden] { display: none; }
.load-more-button { min-width: 160px; padding: 10px 18px; border: 1px solid var(--line); background: var(--surface); color: var(--muted); cursor: pointer; font-size: 11px; }
.load-more-button:hover { border-color: var(--accent); color: var(--accent); }
.asset-visual.is-image-error, .detail-visual.is-image-error { display: grid; place-items: center; }
.asset-visual.is-image-error::before, .detail-visual.is-image-error::before { content: "暂不可用"; color: var(--faint); font-size: 11px; letter-spacing: .12em; }
.catalog-grid { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }
}

@media (max-width: 720px) {
  .topbar { padding: 0 18px; }
  .edition { display: none; }
  .workspace { display: block; }
  .sidebar { display: none; }
  .catalog { padding: 26px 16px 48px; }
  .catalog-header { display: block; }
  .catalog-actions { margin-top: 22px; }
  .collection-switcher { overflow-x: auto; }
  .search-box { flex: 1; min-width: 0; }
  .toolbar { display: block; }
  .ratio-switcher { margin-top: 14px; }
  .secondary-toolbar { display: block; }
  .secondary-toolbar .filter-pills + .filter-pills { margin-top: 10px; }
  .loading-state { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 16px; }
.loading-card { aspect-ratio: 2 / 3; border: 1px solid var(--line); background: var(--surface-raised); animation: skeleton-pulse 1.2s ease-in-out infinite alternate; }
.loading-card:nth-child(2n) { animation-delay: .15s; }
.loading-card:nth-child(3n) { animation-delay: .3s; }
@keyframes skeleton-pulse { from { opacity: .45; } to { opacity: .9; } }
.load-more-wrap { display: flex; justify-content: center; margin-top: 24px; }
.load-more-wrap[hidden] { display: none; }
.load-more-button { min-width: 160px; padding: 10px 18px; border: 1px solid var(--line); background: var(--surface); color: var(--muted); cursor: pointer; font-size: 11px; }
.load-more-button:hover { border-color: var(--accent); color: var(--accent); }
.asset-visual.is-image-error, .detail-visual.is-image-error { display: grid; place-items: center; }
.asset-visual.is-image-error::before, .detail-visual.is-image-error::before { content: "暂不可用"; color: var(--faint); font-size: 11px; letter-spacing: .12em; }
.catalog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .asset-meta { padding: 11px; }
  .asset-name { font-size: 15px; }
  .asset-footer { display: block; line-height: 1.7; }
  .detail-panel { padding-inline: 20px; }
}

@media (max-width: 390px) {
  .loading-state { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 16px; }
.loading-card { aspect-ratio: 2 / 3; border: 1px solid var(--line); background: var(--surface-raised); animation: skeleton-pulse 1.2s ease-in-out infinite alternate; }
.loading-card:nth-child(2n) { animation-delay: .15s; }
.loading-card:nth-child(3n) { animation-delay: .3s; }
@keyframes skeleton-pulse { from { opacity: .45; } to { opacity: .9; } }
.load-more-wrap { display: flex; justify-content: center; margin-top: 24px; }
.load-more-wrap[hidden] { display: none; }
.load-more-button { min-width: 160px; padding: 10px 18px; border: 1px solid var(--line); background: var(--surface); color: var(--muted); cursor: pointer; font-size: 11px; }
.load-more-button:hover { border-color: var(--accent); color: var(--accent); }
.asset-visual.is-image-error, .detail-visual.is-image-error { display: grid; place-items: center; }
.asset-visual.is-image-error::before, .detail-visual.is-image-error::before { content: "暂不可用"; color: var(--faint); font-size: 11px; letter-spacing: .12em; }
.catalog-grid { grid-template-columns: 1fr; }
}

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