:root { color-scheme: light; --paper: #f6f4ef; --ink: #282927; --muted: #6a6b64; --border: #d6d5cc; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 15px/1.6 system-ui, sans-serif; }
a { color: inherit; text-underline-offset: 3px; }
a:hover { color: #726140; }
button, input, select { font: inherit; color: inherit; }
button, select { cursor: pointer; }
button, input, select { border: 1px solid var(--border); border-radius: 5px; background: #fffc; padding: 9px 12px; }
button:hover { border-color: var(--ink); }
:focus-visible { outline: 3px solid #9c8656; outline-offset: 3px; }
header, main, footer { max-width: 1600px; margin: auto; padding: 26px 40px; }
header { padding-top: 46px; padding-bottom: 15px; }
.eyebrow { font-size: 11px; letter-spacing: .16em; color: var(--muted); }
.heading-row { display: flex; justify-content: space-between; gap: 20px; align-items: center; }
h1 { font-family: Georgia, "Songti SC", serif; font-size: clamp(25px, 3vw, 40px); font-weight: 500; margin: 0; }
h2 { font: 500 24px/1.3 Georgia, "Songti SC", serif; }
header p, .result-row p { color: var(--muted); }
nav { display: flex; gap: 24px; align-items: baseline; white-space: nowrap; }
/* The language switch reads like the neighboring nav links but stays a real button. */
.lang-toggle { border: 0; border-radius: 2px; background: none; padding: 0; text-decoration: underline; text-underline-offset: 3px; }
.lang-toggle:hover { color: #726140; }
.filters { display: flex; gap: 12px; align-items: end; flex-wrap: wrap; border-top: 1px solid var(--border); padding-top: 20px; }
label { display: grid; gap: 5px; font-size: 12px; color: var(--muted); }
input, select { font-size: 14px; color: var(--ink); height: 42px; }
/* A drawn chevron replaces the native arrow: it sits as far in from the right border as the text does from the left,
   and the right padding keeps long option text clear of it. */
select { -webkit-appearance: none; appearance: none; padding-right: 34px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%236a6b64' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; background-size: 10px 6px; }
select:hover { border-color: var(--ink); }
.filters button { height: 42px; padding-block: 0; font-size: 14px; }
.search { flex: 1; min-width: 250px; }
.result-row { display: flex; justify-content: space-between; gap: 10px; font-size: 12px; margin: 14px 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 22px; }
.card { min-width: 0; }
.card-image { display: block; padding: 0; width: 100%; aspect-ratio: 1; overflow: hidden; border-radius: 5px; background: #e7e5df; }
.card-image img { width: 100%; height: 100%; object-fit: contain; display: block; }
.card h2 { font: 500 15px/1.4 system-ui, sans-serif; margin: 10px 0 3px; overflow-wrap: anywhere; }
.card p { color: var(--muted); font-size: 12px; margin: 3px 0; }
.card .tag { font-size: 10px; text-transform: uppercase; letter-spacing: .04em; }
.more { display: block; margin: 32px auto; padding: 10px 40px; }
.noscript { margin: 0 0 20px; padding: 12px 16px; border: 1px solid var(--border); border-radius: 5px; }
[hidden] { display: none !important; }
.source-inventory { border-top: 1px solid var(--border); margin-top: 32px; padding-top: 20px; }
summary { cursor: pointer; }
.table-scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 12px; margin: 15px 0; }
th, td { text-align: left; vertical-align: top; padding: 10px; border-bottom: 1px solid var(--border); }
th:first-child, td:first-child { min-width: 180px; }
/* The record count and its header stay on one line (a narrow column stacked "文件记录" a character per line), and long
   notes that name paths (assets/legacy/trans/) wrap inside their column rather than widen the table past a phone. */
th:nth-child(2), td:nth-child(2) { white-space: nowrap; }
td:nth-child(3) { overflow-wrap: anywhere; }
footer { border-top: 1px solid var(--border); font-size: 11px; color: var(--muted); }
dialog { width: min(1400px, 95vw); height: min(900px, 93vh); padding: 0; border: 1px solid var(--border); border-radius: 8px; background: var(--paper); color: var(--ink); }
dialog[open] { display: grid; grid-template-columns: minmax(0, 1fr) 360px; }
dialog::backdrop { background: #171918d9; }
/* While the viewer is open the page behind it stays put, so wheel, touch and key scrolling cannot move the grid or
   lazy-load more originals. The scrollbar gutter is always reserved, so the grid never reflows when a classic
   scrollbar comes or goes: not when the lock hides it, and not when a filter makes the page short. */
html { scrollbar-gutter: stable; }
html:has(dialog:modal) { overflow: hidden; }
dialog, .viewer-image, .viewer-info { overscroll-behavior: contain; }
.viewer-image { min-height: 0; display: flex; align-items: center; justify-content: center; background: #e7e5df; overflow: auto; }
.viewer-image img { max-width: 100%; max-height: 100%; object-fit: contain; }
.viewer-info { padding: 48px 24px 24px; overflow-y: auto; overflow-wrap: anywhere; font-size: 13px; }
/* Viewer marks are SVG centred by grid, so they sit true whatever fonts the platform has. The arrows take the
   counter's text weight; the close mark keeps the weight of the 24px glyph it replaced. */
.icon { display: block; fill: none; stroke: currentColor; stroke-width: 1.25; stroke-linecap: round; stroke-linejoin: round; }
.close { position: absolute; top: 8px; right: 8px; display: grid; place-items: center; width: 35px; height: 35px; border-radius: 50%; background: var(--paper); padding: 0; z-index: 2; }
.close .icon { stroke-width: 1.85; }
.viewer-controls { display: flex; align-items: center; gap: 14px; }
.viewer-controls button { display: grid; place-items: center; width: 40px; height: 40px; padding: 0; }
/* Trim the counter's box to its digits (cap height to baseline) so it centres on the arrows in any font. */
#position { text-box: trim-both cap alphabetic; }
.links { display: flex; gap: 12px; flex-wrap: wrap; }
.provenance-item { border-top: 1px solid var(--border); margin-top: 20px; padding-top: 14px; }
.provenance-item p { margin: 5px 0; }
#file-info { white-space: pre-wrap; font: 11px/1.6 monospace; }
@media (max-width: 760px) {
  header, main, footer { padding: 22px 16px; }
  .heading-row, .result-row { display: block; }
  nav { margin-top: 15px; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 12px; }
  .search { flex-basis: 100%; }
  /* Two fields to a row, with the basis just under half so Reset still fits beside the last pair. A field is never
     narrower than its longest option or its label: one that cannot share a row takes a row of its own instead of
     clipping its text. */
  .filters label:not(.search) { flex: 1 1 calc(50% - 48px); min-width: max-content; }
  .filters select { width: 100%; min-width: 0; }
  dialog[open] { grid-template-columns: 1fr; grid-template-rows: minmax(180px, 48vh) 1fr; }
  .viewer-info { padding: 20px; }
  /* The inventory's three columns share a phone's width by fixed shares, so the wrapping notes keep a readable measure
     instead of being squeezed beside a 180px source column. */
  table { table-layout: fixed; }
  th:first-child, td:first-child { min-width: 0; width: 34%; overflow-wrap: anywhere; }
  th:nth-child(2) { width: 7.5em; }
}
/* High-contrast modes repaint the page; give them back the native arrow, which follows the system colours. */
@media (forced-colors: active) {
  select { -webkit-appearance: auto; appearance: auto; background-image: none; padding-right: 12px; }
}