:root {
  color-scheme: light dark;
  --bg: #f6f5f1;
  --bg-2: #ecebe5;
  --card: #ffffff;
  --ink: #16181a;
  --ink-2: #4a4f55;
  --ink-3: #6c7279;
  --line: #d9d7cf;
  --accent: #0b6e4f;
  --accent-ink: #ffffff;
  --accent-soft: #dcefe6;
  --warn: #9a5b00;
  --bad: #b3261e;
  --good: #0b6e4f;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --shadow: 0 1px 2px rgba(0,0,0,.05), 0 2px 8px rgba(0,0,0,.04);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111315;
    --bg-2: #181b1e;
    --card: #1b1e21;
    --ink: #eceae4;
    --ink-2: #b8bcc0;
    --ink-3: #8d9298;
    --line: #2d3236;
    --accent: #4cc39a;
    --accent-ink: #08130e;
    --accent-soft: #163329;
    --warn: #e0a84a;
    --bad: #ff8a80;
    --good: #4cc39a;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 var(--sans); }
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
img { max-width: 100%; }
code, pre, kbd, .mono { font-family: var(--mono); font-size: .9em; }
pre { background: var(--bg-2); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; overflow-x: auto; line-height: 1.45; }
:not(pre) > code { background: var(--bg-2); border: 1px solid var(--line); border-radius: 4px; padding: 0 4px; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: .2em 0 .4em; }
h2 { font-size: 1.35rem; margin: 1.8em 0 .5em; }
h3 { font-size: 1.05rem; margin: 1.4em 0 .4em; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--card); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; top: 8px; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 780px; }

/* header */
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 0; z-index: 5; }
.site-header .wrap { display: flex; align-items: center; gap: 20px; min-height: 60px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 650; letter-spacing: -0.01em; }
.brand svg { width: 26px; height: 26px; flex: none; }
.brand small { display: block; font-weight: 400; color: var(--ink-3); font-size: .75rem; letter-spacing: 0; }
.nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.nav a { color: var(--ink-2); text-decoration: none; padding: 6px 10px; border-radius: 6px; font-size: .95rem; }
.nav a:hover { background: var(--bg-2); color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); background: var(--bg-2); font-weight: 600; }

main { padding: 28px 0 64px; min-height: 60vh; }
.site-footer { border-top: 1px solid var(--line); color: var(--ink-3); font-size: .9rem; padding: 28px 0 40px; }
.site-footer .wrap { display: flex; gap: 12px 28px; flex-wrap: wrap; justify-content: space-between; }
.site-footer a { color: var(--ink-2); }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--ink); text-decoration: none; font: inherit; font-weight: 550; cursor: pointer; line-height: 1.2; }
.btn:hover { border-color: var(--ink-3); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.07); }
.btn.small { padding: 5px 10px; font-size: .85rem; font-weight: 500; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 18px 0; }

/* home */
.hero { display: grid; grid-template-columns: 1.25fr 1fr; gap: 40px; align-items: center; padding: 12px 0 8px; }
.hero p.lead { font-size: 1.15rem; color: var(--ink-2); max-width: 46ch; }
.hero-mosaic { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.hero-mosaic a { aspect-ratio: 1; background: var(--card); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; display: block; }
.hero-mosaic img { width: 100%; height: 100%; object-fit: contain; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin: 32px 0; }
.stat { background: var(--card); padding: 16px 18px; }
.stat b { display: block; font-size: 1.7rem; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.stat span { color: var(--ink-3); font-size: .88rem; }
.features { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.features li { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; color: var(--ink-2); }
.features li strong { display: block; color: var(--ink); margin-bottom: 4px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* cards grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; text-decoration: none; color: inherit; display: flex; flex-direction: column; box-shadow: var(--shadow); transition: border-color .12s; }
.card:hover { border-color: var(--ink-3); }
.card .thumb { aspect-ratio: 1; background: #fff; display: flex; align-items: center; justify-content: center; border-bottom: 1px solid var(--line); }
.card .thumb img { width: 100%; height: 100%; object-fit: contain; }
.card .body { padding: 10px 12px 12px; display: flex; flex-direction: column; gap: 3px; }
.card .name { font-weight: 600; font-size: .95rem; line-height: 1.3; }
.card .meta { color: var(--ink-3); font-size: .8rem; display: flex; gap: 2px 10px; flex-wrap: wrap; }
.tag { display: inline-block; font-size: .75rem; padding: 1px 7px; border-radius: 999px; background: var(--bg-2); color: var(--ink-2); border: 1px solid var(--line); white-space: nowrap; }
.tag.accent { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.tag.bad { color: var(--bad); }
.skeleton { background: linear-gradient(90deg, var(--bg-2), var(--card), var(--bg-2)); background-size: 200% 100%; animation: sk 1.2s infinite; border-radius: var(--radius); min-height: 240px; }
@keyframes sk { to { background-position: -200% 0; } }
@media (prefers-reduced-motion: reduce) { .skeleton { animation: none; } }

/* browse */
.browse { display: grid; grid-template-columns: 240px 1fr; gap: 28px; align-items: start; }
.filters { position: sticky; top: 80px; display: flex; flex-direction: column; gap: 14px; }
.filters fieldset { border: 0; padding: 0; margin: 0; }
label, legend { font-size: .85rem; font-weight: 600; color: var(--ink-2); display: block; margin-bottom: 4px; }
[hidden] { display: none !important; }
input[type=password], input[type=text], input[type=search], input[type=email], input[type=url], select, textarea {
  width: 100%; font: inherit; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 9px 11px; }
textarea { min-height: 110px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
.searchbar { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.searchbar input { flex: 1 1 260px; }
.searchbar select { width: auto; }
.result-line { color: var(--ink-3); font-size: .9rem; margin: 0 0 12px; }
.pager { display: flex; gap: 8px; align-items: center; justify-content: center; margin-top: 24px; flex-wrap: wrap; }
.pager span { color: var(--ink-3); font-size: .9rem; padding: 0 8px; }
.filters-toggle { display: none; }
.empty { padding: 40px 20px; text-align: center; color: var(--ink-3); border: 1px dashed var(--line); border-radius: var(--radius); }

/* asset page */
.crumbs { font-size: .88rem; color: var(--ink-3); margin-bottom: 8px; }
.crumbs a { color: var(--ink-3); }
.asset { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 32px; align-items: start; }
.viewer { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); aspect-ratio: 1; position: relative; overflow: hidden; }
.viewer model-viewer, .viewer img.poster { width: 100%; height: 100%; display: block; object-fit: contain; --poster-color: #ffffff; }
.viewer .hint { position: absolute; left: 10px; bottom: 8px; font-size: .78rem; color: #5a6066; background: rgba(255,255,255,.85); padding: 2px 8px; border-radius: 6px; }
.thumbs { display: flex; gap: 8px; margin-top: 10px; }
.thumbs button { width: 72px; height: 72px; padding: 0; border: 1px solid var(--line); border-radius: 8px; background: #fff; cursor: pointer; overflow: hidden; }
.thumbs button[aria-pressed="true"] { outline: 2px solid var(--accent); }
.thumbs img { width: 100%; height: 100%; object-fit: contain; }
.asset h1 { margin-top: 0; }
.asset .idline { font-family: var(--mono); font-size: .85rem; color: var(--ink-3); display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.asset .desc { color: var(--ink-2); }
.badges { display: flex; gap: 6px; flex-wrap: wrap; margin: 10px 0; }
.downloads { display: flex; gap: 8px; flex-wrap: wrap; margin: 16px 0 6px; }
.dl-note { font-size: .82rem; color: var(--ink-3); }
table.kv { width: 100%; border-collapse: collapse; font-size: .92rem; }
table.kv th, table.kv td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--line); }
table.kv th { width: 34%; color: var(--ink-3); font-weight: 500; }
table.kv td { word-break: break-word; }
table.kv tr:last-child th, table.kv tr:last-child td { border-bottom: 0; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 6px; }
.panel.pad { padding: 16px 18px; }
.ok { color: var(--good); font-weight: 600; }
.no { color: var(--bad); font-weight: 600; }
.copybox { position: relative; }
.copybox pre { padding-right: 76px; white-space: pre-wrap; word-break: break-word; }
.copybox .btn { position: absolute; top: 8px; right: 8px; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }

/* prose */
.prose { max-width: 760px; }
.prose p, .prose li { color: var(--ink-2); }
.prose strong { color: var(--ink); }
.prose li { margin: .3em 0; }

/* forms */
.form { display: grid; gap: 16px; max-width: 640px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form .help { font-size: .82rem; color: var(--ink-3); margin-top: 4px; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; color: var(--ink-2); font-size: .92rem; }
.check input { margin-top: 4px; width: 18px; height: 18px; flex: none; }
.hp { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }
progress { width: 100%; height: 10px; accent-color: var(--accent); }
.notice { border: 1px solid var(--line); border-left: 4px solid var(--accent); background: var(--card); padding: 12px 14px; border-radius: 8px; }
.notice.bad { border-left-color: var(--bad); }
.notice.warn { border-left-color: var(--warn); }

/* status */
.steps { display: flex; gap: 0; list-style: none; padding: 0; margin: 18px 0; flex-wrap: wrap; }
.steps li { flex: 1 1 120px; padding: 10px 12px; border: 1px solid var(--line); margin: -1px 0 0 -1px; background: var(--card); color: var(--ink-3); font-size: .88rem; }
.steps li.done { color: var(--ink); }
.steps li.cur { color: var(--accent-ink); background: var(--accent); border-color: var(--accent); font-weight: 600; }
.steps li.fail { color: #fff; background: var(--bad); border-color: var(--bad); font-weight: 600; }

/* admin */
.sub { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 16px; }
.sub header { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.sub .imgs { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0; }
.sub .imgs img { width: 140px; height: 140px; object-fit: contain; background: #fff; border: 1px solid var(--line); border-radius: 6px; }
details summary { cursor: pointer; color: var(--ink-2); }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 24px; }
  .asset { grid-template-columns: 1fr; }
  .browse { grid-template-columns: 1fr; }
  .filters { position: static; display: none; }
  .filters.open { display: flex; }
  .filters-toggle { display: inline-flex; }
  .two { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 14px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: 1fr; }
  .grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .form .row2 { grid-template-columns: 1fr; }
  .brand small { display: none; }
  .nav { margin-left: -10px; width: calc(100% + 10px); flex-wrap: wrap; padding-bottom: 6px; }
  .hero-mosaic a:nth-child(n+7) { display: none; }
  .site-header { position: static; }
  table.kv th { width: 40%; }
}

/* v3: posters, mechanism, media tabs, 3D viewer */
.tag.deform { background: #efe6fa; color: #5b2d91; border-color: transparent; }
@media (prefers-color-scheme: dark) { .tag.deform { background: #2c2140; color: #cfb4f5; } }
.stats { grid-template-columns: repeat(5, 1fr); }
.card .thumb { aspect-ratio: 4 / 3; overflow: hidden; }
.card .thumb img.is-poster { object-fit: cover; }
.card .thumb img.is-thumb { object-fit: cover; }
.card .thumb { background: #8c8c8c; }
.hero-mosaic img.is-poster { object-fit: cover; }
.media-tabs { display: flex; gap: 4px; margin-bottom: 8px; flex-wrap: wrap; }
.media-tabs button { font: inherit; font-size: .88rem; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--ink-2); cursor: pointer; }
.media-tabs button[aria-selected="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.viewer { aspect-ratio: auto; background: transparent; border: 0; overflow: visible; }
.v3d-stage { position: relative; aspect-ratio: 4 / 3; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #f2f2ee; touch-action: none; }
.v3d-dark .v3d-stage { background: #1a1d20; }
.v3d-stage.still { background: #fff; touch-action: auto; }
.v3d-stage canvas { display: block; width: 100% !important; height: 100% !important; outline: none; }
.v3d-stage img.poster { width: 100%; height: 100%; object-fit: contain; display: block; }
.v3d-labels { position: absolute; inset: 0; pointer-events: none; }
.v3d-dim { font: 600 12px/1 var(--mono); color: #0b3d2c; background: rgba(255,255,255,.9); border: 1px solid #0b6e4f; padding: 3px 6px; border-radius: 4px; white-space: nowrap; }
.v3d-status { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); background: rgba(0,0,0,.65); color: #fff; padding: 8px 12px; border-radius: 8px; font-size: .9rem; z-index: 2; }
.v3d-bar { margin-top: 10px; display: flex; flex-direction: column; gap: 10px; }
.v3d-row { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.v3d-row .btn[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.v3d-sliders { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 8px 32px; align-items: center; }
.v3d-slider { display: grid; grid-template-columns: auto 1fr auto; gap: 8px; align-items: center; font-size: .85rem; }
.v3d-slider label { margin: 0; font-weight: 500; text-transform: capitalize; }
.v3d-slider input { width: 100%; accent-color: var(--accent); }
.v3d-sliders > .btn { justify-self: start; }
.v3d-slider output { font-family: var(--mono); font-size: .8rem; color: var(--ink-3); width: 5.5em; text-align: right; font-variant-numeric: tabular-nums; }
.videos { display: grid; gap: 12px; }
.videos figure { margin: 0; }
.videos video { width: 100%; aspect-ratio: 16 / 9; background: #000; border-radius: var(--radius); display: block; }
.videos figcaption { font-size: .85rem; color: var(--ink-3); margin-top: 4px; }
@media (max-width: 600px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stats .stat:last-child { grid-column: span 2; }
  .v3d-sliders { grid-template-columns: 1fr; }
}
table.kv th { overflow-wrap: anywhere; }
@media (max-width: 600px) {
  table.kv.stack th, table.kv.stack td { display: block; width: auto; }
  table.kv.stack th { border-bottom: 0; padding-bottom: 0; font-weight: 600; color: var(--ink-2); }
}