/*
 * 近現代美人画 顔ファインダー — UI
 * 配色・書体は face-web (web/) と同じ @nakamura196/react-ui のデザイントークン
 * (東京大学 Visual Identity Guidelines 2024-06: UTokyo Blue + Yellow を差し色、
 *  白黒基調, Noto Sans/Serif JP) に倣う。
 */

:root {
  /* --- UTokyo brand (raw) --- */
  --ds-blue: #0b8bee;   /* UTokyo Blue (PANTONE 2194C) */
  --ds-yellow: #ffcd00; /* UTokyo Yellow (PANTONE 116C) */

  /* --- semantic (light) --- */
  --ds-bg: #ffffff;
  --ds-surface: #f7f9fb;
  --ds-surface-2: #eef2f7;
  --ds-border: #e2e8f0;
  --ds-fg: #1a1a1a;
  --ds-fg-muted: #51607a;
  --ds-primary: var(--ds-blue);
  --ds-primary-hover: #096fbe;
  --ds-primary-fg: #ffffff;
  --ds-accent: var(--ds-yellow);
  --ds-ring: rgba(60, 162, 241, 0.35);
  --ds-radius: 0.5rem;

  --ds-font-sans: "Noto Sans JP", ui-sans-serif, system-ui, -apple-system,
    "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  --ds-font-serif: "Noto Serif JP", ui-serif, Georgia, "Hiragino Mincho ProN",
    "Yu Mincho", serif;

  font-family: var(--ds-font-sans);
  color: var(--ds-fg);
  background: var(--ds-bg);
}

:root[data-theme="dark"],
:root[data-theme="auto"][data-os-dark] {
  --ds-bg: #010e18;
  --ds-surface: #021c30;
  --ds-surface-2: #032a47;
  --ds-border: #04385f;
  --ds-fg: #e7f3fd;
  --ds-fg-muted: #9dd1f8;
  --ds-primary: #3ca2f1;
  --ds-primary-hover: #6db9f5;
  --ds-primary-fg: #010e18;
  --ds-accent: #ffd733;
  --ds-ring: rgba(109, 185, 245, 0.4);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ds-bg: #010e18;
    --ds-surface: #021c30;
    --ds-surface-2: #032a47;
    --ds-border: #04385f;
    --ds-fg: #e7f3fd;
    --ds-fg-muted: #9dd1f8;
    --ds-primary: #3ca2f1;
    --ds-primary-hover: #6db9f5;
    --ds-primary-fg: #010e18;
    --ds-accent: #ffd733;
    --ds-ring: rgba(109, 185, 245, 0.4);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { overflow-x: clip; }  /* 端末幅を超える横はみ出しを抑止(sticky は維持) */
body {
  font-family: var(--ds-font-sans);
  color: var(--ds-fg);
  background: var(--ds-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: var(--ds-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== appbar ===== */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 0 22px; height: 3.5rem;
  background: var(--ds-bg); border-bottom: 1px solid var(--ds-border);
  position: sticky; top: 0; z-index: 40;
}
.brand h1 {
  font-family: var(--ds-font-sans); font-size: 1.125rem; font-weight: 700;
  margin: 0; color: var(--ds-primary); letter-spacing: -.01em; line-height: 1.2;
}
.tagline { margin: 1px 0 0; font-size: .78rem; color: var(--ds-fg-muted); }
.counts { font-size: 13px; color: var(--ds-fg-muted); white-space: nowrap; }
.counts #result-count {
  font-weight: 700; color: var(--ds-primary); font-size: 17px;
  font-variant-numeric: tabular-nums;
}

/* ===== layout ===== */
.layout {
  display: grid;
  grid-template-columns: 224px 1fr 304px;
  align-items: start;
}
.facets, .curlist {
  position: sticky; top: 3.5rem;
  height: calc(100vh - 3.5rem);
  overflow-y: auto;
  background: var(--ds-surface);
  padding: 16px;
}
.facets { border-right: 1px solid var(--ds-border); }
.curlist { border-left: 1px solid var(--ds-border); }
.results { padding: 18px; min-height: calc(100vh - 3.5rem); background: var(--ds-bg); }

/* search */
.search input {
  width: 100%; padding: .5rem .625rem; font-size: 13px;
  border: 1px solid var(--ds-border); border-radius: var(--ds-radius);
  background: var(--ds-bg); color: var(--ds-fg);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.search input:focus { outline: none; border-color: var(--ds-primary); box-shadow: 0 0 0 3px var(--ds-ring); }

.facet-group { margin: 16px 0; }
.facet-group h3 {
  font-size: 12px; color: var(--ds-fg-muted);
  margin: 0 0 6px; font-weight: 700; letter-spacing: .04em;
}
.facet-opt {
  display: flex; align-items: center; gap: 7px;
  font-size: 13px; padding: 3px 0; cursor: pointer; color: var(--ds-fg);
}
.facet-opt input { accent-color: var(--ds-primary); }
.facet-opt .n { margin-left: auto; color: var(--ds-fg-muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.facet-opt.off { opacity: .4; }

button { font: inherit; cursor: pointer; border-radius: var(--ds-radius); transition: background-color .15s, border-color .15s, color .15s; }
.ghost {
  background: var(--ds-bg); border: 1px solid var(--ds-border);
  padding: .5rem .7rem; color: var(--ds-fg-muted); width: 100%; font-size: 13px;
}
.ghost:hover { border-color: var(--ds-primary); color: var(--ds-primary); }
.ghost.small { width: auto; padding: 4px 9px; font-size: 12px; }
.primary {
  background: var(--ds-primary); color: var(--ds-primary-fg); border: 1px solid transparent;
  padding: .7rem; font-weight: 600; font-size: .9rem;
}
.primary:hover { background: var(--ds-primary-hover); }
.primary:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--ds-ring); }
.primary:disabled { opacity: .5; cursor: not-allowed; }
.secondary {
  background: var(--ds-bg); border: 1px solid var(--ds-primary); color: var(--ds-primary);
  padding: .6rem; font-weight: 600; font-size: .85rem;
}
.secondary:hover { background: var(--ds-surface-2); }
.secondary:disabled { opacity: .5; cursor: not-allowed; border-color: var(--ds-border); color: var(--ds-fg-muted); }

/* ===== grid ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 14px;
}
.card {
  background: var(--ds-bg); border: 1px solid var(--ds-border); border-radius: var(--ds-radius);
  overflow: hidden; cursor: pointer; position: relative; transition: border-color .12s, box-shadow .12s;
}
.card:hover { border-color: var(--ds-primary); box-shadow: 0 0 0 2px var(--ds-ring); }
/* padding式: 顔領域の全体が見えるよう contain + 余白(cover で切れないように) */
.card .thumb {
  width: 100%; aspect-ratio: 1 / 1; object-fit: contain; display: block;
  background: var(--ds-surface-2); padding: 4px;
}
.card .meta { padding: 6px 8px; font-size: 11px; border-top: 1px solid var(--ds-border); }
.card .meta .t { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--ds-fg); }
.card .meta .sub { color: var(--ds-fg-muted); display: flex; gap: 6px; }
.card .badge-iiif {
  position: absolute; top: 6px; left: 6px;
  font-size: 9px; font-weight: 700; letter-spacing: .04em;
  background: rgba(11,139,238,.9); color: #fff; padding: 1px 5px; border-radius: 4px;
}
.card .links {
  position: absolute; top: 6px; right: 6px; display: flex; gap: 4px;
  opacity: 0; transition: opacity .12s;
}
.card:hover .links { opacity: 1; }
.card .links a {
  font-size: 10px; background: rgba(1,14,24,.82); color: #fff; padding: 2px 6px;
  border-radius: 5px; text-decoration: none;
}
.card .links a:hover { background: var(--ds-primary); }
.empty { color: var(--ds-fg-muted); text-align: center; padding: 60px 0; }

/* ===== curation list (right panel) ===== */
.curlist h2 { font-family: var(--ds-font-sans); font-size: 1.05rem; margin: 0 0 6px; color: var(--ds-fg); }
.worklist { display: flex; flex-direction: column; gap: 6px; margin-top: 10px; }
.work-row {
  display: flex; align-items: center; gap: 8px; width: 100%; text-align: left;
  background: var(--ds-bg); border: 1px solid var(--ds-border); border-radius: var(--ds-radius);
  padding: .55rem .65rem; font-size: 13px; color: var(--ds-fg);
}
.work-row:hover { border-color: var(--ds-primary); color: var(--ds-primary); background: var(--ds-surface-2); }
.work-row .w-title { font-weight: 600; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.work-row .w-meta { font-size: 11px; color: var(--ds-fg-muted); font-variant-numeric: tabular-nums; }
.work-row:hover .w-meta { color: var(--ds-primary); }
.work-row .w-open { font-size: 11px; }
.hint { color: var(--ds-fg-muted); font-size: 12px; }
.hint.tiny { font-size: 11px; margin-top: 6px; }

/* ===== header nav ===== */
.nav { display: flex; gap: 4px; }
.nav a {
  font-size: 13px; padding: .35rem .8rem; border-radius: var(--ds-radius);
  color: var(--ds-fg-muted); text-decoration: none;
}
.nav a:hover { background: var(--ds-surface-2); text-decoration: none; }
.nav a.active { color: var(--ds-primary-fg); background: var(--ds-primary); }
.appbar-right { display: flex; align-items: center; gap: 4px; }
.icon-btn {
  background: none; border: 1px solid var(--ds-border); border-radius: var(--ds-radius);
  padding: .3rem .5rem; font-size: 13px; color: var(--ds-fg-muted); line-height: 1; cursor: pointer; min-width: 2.2rem;
}
.icon-btn:hover { border-color: var(--ds-primary); color: var(--ds-primary); }

/* ブランドはリンク化 */
.brand, a.brand { text-decoration: none; color: inherit; display: block; }
.brand:hover { text-decoration: none; }

/* ===== マスコット「筆くん」(web/ の BrushMascot を移植) ===== */
.mascot { display: inline-block; vertical-align: middle; overflow: visible; flex: none; }
.mascot-bob {
  transform-box: fill-box; transform-origin: 50% 92%;
  animation: mascot-bob 3.2s ease-in-out infinite;
}
@keyframes mascot-bob {
  0%, 100% { transform: translateY(0) rotate(-2.5deg); }
  50%      { transform: translateY(-6%) rotate(2.5deg); }
}
.hero-mascot { margin-bottom: .4rem; }
.hero-mascot .mascot { filter: drop-shadow(0 6px 12px rgba(11, 43, 95, .14)); }
.mascot-greeting {
  display: inline-block; position: relative;
  background: var(--ds-bg); border: 1px solid var(--ds-border); border-radius: 14px;
  padding: .4rem .8rem; font-size: .82rem; color: var(--ds-fg); margin-bottom: .8rem;
  box-shadow: 0 2px 6px rgba(0,0,0,.05);
}
.mascot-greeting::after {
  content: ""; position: absolute; top: -7px; left: 50%; transform: translateX(-50%);
  border: 7px solid transparent; border-top: 0; border-bottom-color: var(--ds-border);
}
.mascot-name {
  font-size: .72rem; font-weight: 700; color: var(--ds-primary);
  padding: .12rem .55rem; border: 1px solid var(--ds-border); border-radius: 999px;
  margin-top: .4rem; display: inline-block;
}
@media (prefers-reduced-motion: reduce) {
  .mascot-bob { animation: none; transform: none; }
}

/* 伴奏ドック(左下に常駐する筆くん) */
.companion-dock {
  position: fixed; left: 1.1rem; bottom: 1.1rem; z-index: 45;
  display: flex; align-items: flex-end; gap: .5rem; max-width: min(360px, 82vw);
}
.companion-mascot-btn {
  padding: 0; border: 0; background: transparent; cursor: pointer; line-height: 0; flex: none; border-radius: 50%;
}
.companion-mascot-btn:hover { background: transparent; border: 0; }
.companion-dock .mascot { filter: drop-shadow(0 4px 10px rgba(11, 43, 95, .22)); }
.companion-bubble {
  position: relative; background: var(--ds-bg); border: 1px solid var(--ds-border);
  border-radius: 14px; padding: .6rem 1.7rem .6rem .85rem; font-size: .82rem; line-height: 1.5;
  color: var(--ds-fg); box-shadow: 0 8px 28px rgba(11, 43, 95, .18); animation: comp-in .25s ease;
}
.companion-bubble::after {
  content: ""; position: absolute; bottom: 12px; left: -7px;
  border-top: 7px solid transparent; border-bottom: 7px solid transparent; border-right: 7px solid var(--ds-bg);
}
.companion-x {
  position: absolute; top: .25rem; right: .3rem; width: 1.2rem; height: 1.2rem; padding: 0;
  border: 0; background: transparent; color: var(--ds-fg-muted); font-size: 1rem; line-height: 1;
  cursor: pointer; border-radius: 4px;
}
.companion-x:hover { color: var(--ds-fg); background: var(--ds-surface-2); border: 0; }
.companion-reopen {
  position: fixed; left: 1.1rem; bottom: 1.1rem; z-index: 45;
  padding: 0; border: 0; background: transparent; cursor: pointer; line-height: 0; border-radius: 50%;
}
@keyframes comp-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@media (max-width: 1000px) {
  .companion-dock { left: .6rem; right: .6rem; bottom: .6rem; max-width: none; }
  .companion-bubble { flex: 1; }
}
@media (prefers-reduced-motion: reduce) { .companion-bubble { animation: none; } }

/* ===== landing ===== */
.landing { min-height: calc(100vh - 3.5rem); }
.hero {
  position: relative; text-align: center;
  padding: 64px 22px 56px;
  background:
    radial-gradient(1100px 380px at 50% -120px, rgba(11,139,238,.12), transparent 70%),
    var(--ds-surface);
  border-bottom: 1px solid var(--ds-border);
}
.hero-inner { max-width: 760px; margin: 0 auto; }
.hero-title {
  font-family: var(--ds-font-sans); font-size: 2.4rem; font-weight: 700;
  margin: 0 0 .6rem; letter-spacing: -.02em; color: var(--ds-fg);
}
.hero-tagline { font-size: 1.02rem; color: var(--ds-fg-muted); margin: 0 0 1.3rem; line-height: 1.7; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 1.6rem; }
.hero-badge {
  font-size: 12px; color: var(--ds-primary); background: var(--ds-bg);
  border: 1px solid var(--ds-primary); border-radius: 999px; padding: 4px 12px;
}
.hero-cta-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-cta {
  display: inline-block; background: var(--ds-primary); color: var(--ds-primary-fg);
  padding: .75rem 1.5rem; border-radius: var(--ds-radius); font-weight: 700; font-size: 1rem;
  text-decoration: none;
}
.hero-cta:hover { background: var(--ds-primary-hover); text-decoration: none; }
.hero-cta.ghost-cta { background: var(--ds-bg); color: var(--ds-primary); border: 1px solid var(--ds-primary); }
.hero-cta.ghost-cta:hover { background: var(--ds-surface-2); }
.hero-howto { margin-top: 2rem; }
.howto-link { display: inline-flex; flex-direction: column; align-items: center; gap: 8px; text-decoration: none; }
.howto-thumb { position: relative; display: inline-block; border-radius: var(--ds-radius); overflow: hidden; border: 1px solid var(--ds-border); }
.howto-thumb img { display: block; width: 280px; max-width: 80vw; height: auto; }
.howto-play {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-size: 2.4rem; color: #fff; text-shadow: 0 2px 12px rgba(0,0,0,.6);
}
.howto-cap { font-size: 13px; color: var(--ds-primary); font-weight: 600; }
.howto-soon { font-size: 14px; color: var(--ds-fg-muted); }

.landing-body { max-width: 980px; margin: 0 auto; padding: 8px 22px 56px; }
.section { margin-top: 40px; }
.section-h {
  font-family: var(--ds-font-sans); font-size: 1.3rem; font-weight: 700;
  margin: 0 0 1.1rem; color: var(--ds-fg); text-align: center;
}
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feat-card {
  background: var(--ds-bg); border: 1px solid var(--ds-border); border-radius: var(--ds-radius);
  padding: 1.3rem 1.1rem; text-align: center;
}
.feat-emoji { font-size: 1.9rem; margin-bottom: .5rem; }
.feat-card h3 { font-size: 1rem; margin: 0 0 .5rem; color: var(--ds-fg); }
.feat-card p { font-size: .85rem; color: var(--ds-fg-muted); margin: 0; line-height: 1.65; }

.ds-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.ds-card {
  background: var(--ds-surface); border: 1px solid var(--ds-border); border-radius: var(--ds-radius);
  padding: 1.1rem; text-align: center; display: flex; flex-direction: column; gap: 4px;
}
.ds-card b { font-size: 1.7rem; color: var(--ds-primary); font-variant-numeric: tabular-nums; }
.ds-card span { font-size: 12px; color: var(--ds-fg-muted); }
.ds-note { font-size: .85rem; color: var(--ds-fg-muted); margin: 1rem 0 0; line-height: 1.7; text-align: center; }

/* ===== doc (about) ===== */
.doc { max-width: 760px; margin: 0 auto; padding: 32px 22px 64px; }
.doc h1 { font-family: var(--ds-font-sans); font-size: 1.8rem; margin: 0 0 1rem; color: var(--ds-fg); }
.doc .lead { font-size: 1rem; color: var(--ds-fg-muted); line-height: 1.8; margin: 0 0 1.5rem; }
.doc section { margin-top: 2rem; }
.doc h2 {
  font-family: var(--ds-font-sans); font-size: 1.2rem; margin: 0 0 .7rem; color: var(--ds-fg);
  padding-bottom: .35rem; border-bottom: 2px solid var(--ds-primary); display: inline-block;
}
.doc ul, .doc ol { margin: .4rem 0; padding-left: 1.4rem; }
.doc li { font-size: .92rem; color: var(--ds-fg); line-height: 1.85; margin: .35rem 0; }
.doc .note { font-size: .85rem; color: var(--ds-fg-muted); line-height: 1.7; background: var(--ds-surface); border: 1px solid var(--ds-border); border-radius: var(--ds-radius); padding: .8rem 1rem; }
.doc code { font-size: .82em; background: var(--ds-surface-2); border: 1px solid var(--ds-border); border-radius: 4px; padding: .05rem .35rem; word-break: break-all; }
.doc .back { margin-top: 2.5rem; }

@media (max-width: 720px) {
  .feat-grid { grid-template-columns: 1fr; }
  .ds-cards { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 1.9rem; }
}

/* ===== gallery page ===== */
.gallery-bar {
  display: flex; align-items: center; gap: 16px;
  padding: 12px 22px; border-bottom: 1px solid var(--ds-border); background: var(--ds-surface);
  position: sticky; top: 3.5rem; z-index: 9;
}
.g-filter { font-size: 13px; color: var(--ds-fg-muted); display: flex; align-items: center; gap: 6px; }
.g-filter select {
  font: inherit; font-size: 13px; padding: .35rem .5rem; color: var(--ds-fg);
  border: 1px solid var(--ds-border); border-radius: var(--ds-radius); background: var(--ds-bg);
}
/* gallery は検索ページと同じ .layout を流用。ファセットのみ(右カラムなし)の2カラム。 */
.layout--facets-only { grid-template-columns: 224px 1fr; }
.results-bar {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--ds-border);
}
.gallery { padding: 18px 22px 40px; display: flex; flex-direction: column; gap: 16px; }
.results > .gallery { padding: 0; }
.fig-row {
  display: grid; grid-template-columns: 220px 1fr; gap: 18px;
  border: 1px solid var(--ds-border); border-radius: var(--ds-radius);
  background: var(--ds-bg); padding: 14px; align-items: start;
}
.fig-orig { margin: 0; cursor: pointer; }
.fig-orig .orig-img {
  width: 100%; max-height: 300px; object-fit: contain; display: block;
  border: 1px solid var(--ds-border); border-radius: var(--ds-radius); background: var(--ds-surface-2);
}
.fig-orig figcaption { margin-top: 8px; font-size: 13px; line-height: 1.5; color: var(--ds-fg); }
.fig-orig figcaption .muted { color: var(--ds-fg-muted); display: block; font-size: 11px; }
.fig-right { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.fig-crops {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 10px;
}
.crop { margin: 0; cursor: pointer; }
.crop .crop-img {
  width: 100%; aspect-ratio: 1 / 1; object-fit: contain; padding: 4px;
  background: var(--ds-surface-2); border: 1px solid var(--ds-border); border-radius: var(--ds-radius);
  transition: border-color .12s, box-shadow .12s;
}
.crop:hover .crop-img { border-color: var(--ds-primary); box-shadow: 0 0 0 2px var(--ds-ring); }
.fig-links { display: flex; gap: 14px; font-size: 12px; }

.foot { padding: 16px 22px; font-size: 11px; color: var(--ds-fg-muted); border-top: 1px solid var(--ds-border); background: var(--ds-surface); }

@media (max-width: 1000px) {
  .layout { grid-template-columns: 1fr; }
  .facets, .curlist { position: static; height: auto; border: none; border-bottom: 1px solid var(--ds-border); }
  .fig-row { grid-template-columns: 1fr; }
}

/* 使い方動画の埋め込み(レスポンシブ 16:9) */
.hero-howto { margin-top: 2rem; display: flex; flex-direction: column; align-items: center; gap: 8px; }
.howto-embed { position: relative; width: 100%; max-width: 640px; aspect-ratio: 16 / 9;
  border-radius: var(--ds-radius); overflow: hidden; border: 1px solid var(--ds-border);
  box-shadow: 0 6px 24px rgba(11,43,95,.12); background: #000; }
.howto-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* ===== レスポンシブ(ヘッダー・ツールバー・グリッド) ===== */
@media (max-width: 760px) {
  /* グリッドで「ブランド(可変・省略) + コントロール(固定)」/ 2行目にナビ */
  .topbar {
    display: grid; grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "brand ctrl" "nav nav";
    height: auto; min-height: 3.5rem; padding: 8px 14px; gap: 6px 10px; align-items: center;
  }
  .brand { grid-area: brand; min-width: 0; overflow: hidden; }
  .brand h1 { font-size: .98rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .appbar-right { grid-area: ctrl; gap: 6px; }
  .icon-btn { min-width: 2rem; padding: .3rem .4rem; }
  .nav { grid-area: nav; width: auto; overflow-x: auto; flex-wrap: nowrap; gap: 2px; -webkit-overflow-scrolling: touch; }
  .nav a { white-space: nowrap; padding: .3rem .6rem; font-size: 12px; }
  .counts { font-size: 12px; }
  .gallery-bar { position: static; flex-wrap: wrap; gap: 10px 16px; padding: 10px 14px; }
  .results { padding: 14px; }
  .gallery { padding: 14px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; }
  .doc, .landing-body { padding-left: 16px; padding-right: 16px; }
}
@media (max-width: 480px) {
  .grid { grid-template-columns: repeat(auto-fill, minmax(102px, 1fr)); }
  .hero { padding: 40px 16px 36px; }
  .hero-title { font-size: 1.6rem; }
  .counts { display: none; }  /* 極小幅ではトグル優先で件数を隠す */
}

/* ===== 顔領域ビューア(OSD dialog) ===== */
.osd-dialog {
  width: min(1100px, 94vw);
  height: min(86vh, 820px);
  max-width: 94vw;
  max-height: 92vh;
  padding: 0;
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius);
  background: var(--ds-surface);
  color: var(--ds-fg);
  overflow: hidden;
}
.osd-dialog::backdrop { background: rgba(0, 0, 0, 0.62); }
.osd-dialog[open] { display: flex; flex-direction: column; }
.osd-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 10px; border-bottom: 1px solid var(--ds-border);
  background: var(--ds-surface-2);
}
.osd-close {
  font-size: 1.3rem; line-height: 1; width: 34px; height: 34px;
  border: 1px solid var(--ds-border); border-radius: var(--ds-radius);
  background: var(--ds-bg); color: var(--ds-fg); cursor: pointer;
}
.osd-close:hover { background: var(--ds-surface); }
.osd-counter { font-variant-numeric: tabular-nums; color: var(--ds-fg-muted); font-size: 0.9rem; }
.osd-nav { margin-left: auto; display: flex; gap: 6px; }
.osd-nav-btn {
  font-size: 1.25rem; line-height: 1; width: 38px; height: 34px;
  border: 1px solid var(--ds-border); border-radius: var(--ds-radius);
  background: var(--ds-bg); color: var(--ds-fg); cursor: pointer;
}
.osd-nav-btn:hover:not(:disabled) { background: var(--ds-surface); }
.osd-nav-btn:disabled { opacity: 0.35; cursor: default; }
.osd-stage { flex: 1 1 auto; min-height: 0; background: #05080c; }
.osd-meta {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 10px 12px; border-top: 1px solid var(--ds-border);
  background: var(--ds-surface-2);
}
.osd-text { min-width: 0; flex: 1 1 auto; }
.osd-title { font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.osd-sub { color: var(--ds-fg-muted); font-size: 0.85rem; }
.osd-actions { display: flex; gap: 8px; }
.osd-act {
  font-size: 0.85rem; padding: 6px 12px; border-radius: var(--ds-radius);
  border: 1px solid var(--ds-border); background: var(--ds-bg);
  color: var(--ds-fg); text-decoration: none; cursor: pointer; white-space: nowrap;
}
.osd-act:hover { background: var(--ds-surface); border-color: var(--ds-primary); }
.osd-act[hidden] { display: none; }
/* 原本上で顔領域を示すハイライト矩形 */
.osd-hl {
  border: 2px solid var(--ds-accent);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.5), 0 0 12px rgba(255, 205, 0, 0.5);
  border-radius: 2px; pointer-events: none;
}
@media (max-width: 640px) {
  .osd-dialog {
    width: 100vw; height: 100dvh; max-width: 100vw; max-height: 100dvh;
    border: 0; border-radius: 0;
  }
  .osd-meta { flex-direction: column; align-items: stretch; }
  .osd-actions { justify-content: space-between; }
}