:root {
  --ink: #26221e;
  --muted: #756d63;
  --line: #ddd3c7;
  --bg: #f4efe8;
  --panel: #fffdf9;
  --accent: #913f2d;
  --accent-soft: #f4e4dd;
  --blue: #276c91;
  --success: #2e6c51;
  --danger: #984238;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  color: var(--ink);
  background: var(--bg);
  font: 14px/1.55 "Microsoft JhengHei", "Noto Sans CJK TC", "PingFang TC", "HanaMinA", "HanaMinB", "FZExtended", "KaiXinSong2", "KaiXinSongA", "KaiXinSongB", sans-serif;
}
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  grid-template-rows: auto 1fr;
  grid-template-areas: "top top" "side main";
}
.topbar {
  grid-area: top;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; }
.brand small { color: var(--muted); font-weight: 400; }
.brand-mark {
  width: 30px; height: 30px; display: grid; place-items: center;
  color: #fff; background: var(--accent); border-radius: 6px;
}
.top-actions { display: flex; align-items: center; gap: 8px; }
.session-chip { color: var(--muted); font-size: 12px; }
.ghost-btn {
  padding: 6px 10px; color: #4c453e; background: #fff;
  border: 1px solid var(--line); border-radius: 6px;
  text-decoration: none;
}
.sidebar {
  grid-area: side; padding: 14px 10px; background: #efe9e0;
  border-right: 1px solid var(--line); overflow: auto;
}
.nav { display: grid; gap: 4px; }
.nav-label { margin: 12px 4px 5px; color: var(--muted); font-size: 12px; }
.nav-item {
  padding: 7px 9px; color: var(--ink); text-decoration: none;
  border-radius: 6px;
}
.nav-item:hover { background: #e8dfd4; }
.nav-item.active { background: #fff; box-shadow: inset 3px 0 var(--accent); }
.content { grid-area: main; padding: 18px; overflow: auto; }
.view { min-height: 100%; }
.panel {
  padding: 16px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 8px;
}
.panel h1, .panel h2 { margin: 0 0 12px; font-size: 18px; }
.field { display: grid; gap: 5px; margin-bottom: 12px; }
.field label { color: #655d54; font-size: 12px; }
.field input, .field select, .field textarea {
  width: 100%; min-height: 36px; padding: 6px 9px; color: #4c453e;
  background: #fff; border: 1px solid var(--line); border-radius: 6px;
}
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 99px;
  color: var(--blue); background: #deedf5; font-size: 12px;
}
.badge.warn { color: #8c5b16; background: #fff0d4; }
.badge.danger { color: var(--danger); background: #f8e5e1; }
.list { display: grid; gap: 8px; }
.list-row {
  padding: 10px; display: flex; align-items: center; justify-content: space-between;
  background: #fff; border: 1px solid var(--line); border-radius: 7px;
}
.row-main { min-width: 0; }
.row-title { font-weight: 700; }
.row-sub { color: var(--muted); font-size: 12px; }
.empty { padding: 28px; color: var(--muted); text-align: center; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.card-create-panel { margin: 0 0 14px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: #faf6ef; }
.card-create-panel summary { cursor: pointer; font-weight: 700; }
.card-create-panel form { margin-top: 12px; }
.card-tile {
  padding: 12px; background: #fff; border: 1px solid var(--line);
  border-radius: 8px; text-decoration: none; color: inherit;
}
.card-tile strong { font-size: 18px; }
.section-list { display: grid; gap: 8px; }
.card-floating-nav { position: fixed; right: 22px; bottom: 22px; z-index: 15; display: flex; gap: 5px; align-items: center; padding: 7px; border: 1px solid var(--line); border-radius: 9px; background: rgba(255,253,249,.96); box-shadow: 0 8px 24px rgba(38,34,30,.16); }
.card-floating-nav button, .card-floating-nav select { min-height: 34px; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.card-floating-nav button { min-width: 34px; }
.card-floating-nav select { max-width: 170px; padding: 4px 7px; }
.section-item {
  padding: 9px; background: #fff; border: 1px solid var(--line); border-radius: 6px;
}
.card-gallery { display: flex; flex-wrap: wrap; gap: 10px; }
.card-gallery-item { margin: 0; width: 120px; text-align: center; }
.card-gallery-item img {
  display: block; width: 100%; height: 140px; object-fit: contain;
  background: #f6f1e9; border: 1px solid var(--line); border-radius: 6px;
}
.card-gallery-item figcaption { margin-top: 5px; color: var(--muted); font-size: 12px; }
.toast-root { position: fixed; right: 16px; bottom: 16px; display: grid; gap: 8px; z-index: 20; }
.toast {
  padding: 9px 12px; color: #fff; background: rgba(43,38,33,.94);
  border-radius: 7px; box-shadow: 0 8px 22px rgba(0,0,0,.18);
}
.login-panel { max-width: 420px; margin: 60px auto; }
.primary-btn {
  padding: 8px 14px; color: #fff; background: var(--accent);
  border: 1px solid var(--accent); border-radius: 7px;
}
.secondary-btn {
  padding: 8px 14px; color: #4c453e; background: #fff;
  border: 1px solid var(--line); border-radius: 7px;
}
.reader-grid {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr) 360px;
  gap: 12px;
}
.archive-grid {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 12px;
}
.import-grid {
  display: grid;
  grid-template-columns: 380px minmax(0, 1fr);
  gap: 12px;
}
.crop-grid {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 12px;
}
.glyph-grid {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 12px;
}
.classification-grid {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 12px;
}
.book-grid {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 12px;
}
.reading-grid {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 12px;
}
.card-tile img {
  width: 100%;
  height: 160px;
  object-fit: contain;
  background: #eee7dc;
  border-radius: 5px;
}
.crop-stage-wrap { max-width: 100%; }
.crop-stage { position: relative; display: inline-block; max-width: 100%; }
.crop-stage img { display: block; max-width: 100%; height: auto; }
.crop-overlay { position: absolute; inset: 0; pointer-events: none; }
.crop-box {
  position: absolute;
  border: 2px solid var(--accent);
  background: rgba(145,63,45,.08);
}
.crop-box.drawing { border-color: var(--blue); }
.reader-pane { min-width: 0; }
.slip-list { display: grid; gap: 6px; max-height: 65vh; overflow: auto; }
.slip-row {
  padding: 8px 9px; text-align: left; background: #fff;
  border: 1px solid var(--line); border-radius: 6px;
}
.slip-row.active { border-color: var(--accent); box-shadow: inset 3px 0 var(--accent); }
.node-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.node-chip {
  padding: 5px 8px; color: #4c453e; background: #fff;
  border: 1px solid var(--line); border-radius: 99px;
}

@media (max-width: 760px) {
  .app-shell { grid-template-columns: 1fr; grid-template-areas: "top" "main"; }
  .sidebar { display: none; }
  .reader-grid { grid-template-columns: 1fr; }
  .archive-grid { grid-template-columns: 1fr; }
  .import-grid { grid-template-columns: 1fr; }
  .crop-grid { grid-template-columns: 1fr; }
  .glyph-grid { grid-template-columns: 1fr; }
  .classification-grid { grid-template-columns: 1fr; }
  .book-grid { grid-template-columns: 1fr; }
  .reading-grid { grid-template-columns: 1fr; }
}
.card-head { min-height: 52px; display: flex; align-items: center; gap: 12px; font-family: "HanaMinA", "HanaMinB", "FZExtended", "KaiXinSong2", "KaiXinSongA", "KaiXinSongB", "BNUShuowen", serif; }
.card-head-image { display: block; width: auto; height: 64px; max-width: 120px; object-fit: contain; }
.assertion-blocks { line-height: 1.9; white-space: pre-wrap; }
.assertion-inline-glyph { display: inline-block; width: auto; height: 1.8em; max-width: 4em; margin: 0 .15em; vertical-align: middle; object-fit: contain; border: 1px solid var(--line); background: #fff; }
.character-assertion-item { margin-bottom: 12px; padding: 12px; border: 1px solid var(--line); border-radius: 10px; background: #fffdf9; }
.assertion-evidence-item { margin-top: 9px; padding: 9px; border-left: 3px solid #d9c8b4; background: #faf6ef; }
.assertion-editor-form { display: grid; gap: 10px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); }
.assertion-editor-form textarea { min-height: 100px; }
.assertion-evidence-editor { display: grid; gap: 7px; padding: 10px; border: 1px solid var(--line); border-radius: 8px; }
.card-head-label { color: var(--muted); font-size: 13px; font-weight: 400; }
.character-structure-tree ul { margin: 0; padding-left: 28px; list-style: none; }
.character-structure-tree > ul { padding-left: 0; }
.character-structure-tree li { position: relative; margin: 8px 0; }
.character-structure-tree li li::before { content: ""; position: absolute; left: -18px; top: 13px; width: 12px; border-top: 1px solid var(--line); }
.structure-node { display: inline-flex; min-width: 30px; min-height: 30px; padding: 4px 8px; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 7px; background: #fff; }
.structure-operator { color: var(--brand); border-color: #d7b6ad; background: #fff5f1; font-weight: 700; }
.structure-source { margin-left: 7px; color: var(--muted); font-size: 12px; }
.source-line { margin-top: 4px; }
.usage-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(100px, 1fr)); gap: 8px; margin-bottom: 14px; }
.usage-stat { padding: 10px; text-align: center; background: #f8f4ed; border: 1px solid var(--line); border-radius: 7px; }
.usage-stat strong { display: block; font-size: 20px; color: var(--brand); }
.usage-stat span { color: var(--muted); font-size: 12px; }
.usage-heading { margin: 16px 0 8px; }
.commentary-anchor-list { display: grid; gap: 9px; }
.commentary-anchor-card, .occurrence-item { display: block; color: inherit; text-decoration: none; }
.commentary-anchor-card { padding: 12px; background: #fff; border: 1px solid var(--line); border-radius: 7px; }
.commentary-anchor-card:hover, .occurrence-item:hover { border-color: var(--accent); }
.anchor-text { font-size: 18px; }
.anchor-summary { margin: 7px 0; line-height: 1.65; }
.anchor-filters { align-items: end; margin: 18px 0 12px; }
.character-relation-network { display: grid; grid-template-columns: minmax(90px, 140px) 1fr; gap: 18px; align-items: center; margin-bottom: 16px; }
.relation-current-card { display: grid; place-items: center; min-height: 90px; padding: 12px; border: 2px solid var(--accent); border-radius: 50%; background: var(--accent-soft); font-size: 26px; font-weight: 700; }
.relation-edges { display: grid; gap: 8px; }
.relation-edge { position: relative; display: grid; grid-template-columns: minmax(68px, auto) minmax(40px, auto) 1fr; gap: 9px; align-items: center; padding: 9px 12px; color: inherit; text-decoration: none; border: 1px solid var(--line); border-radius: 7px; background: #fff; }
.relation-edge::before { content: ""; position: absolute; left: -19px; width: 18px; border-top: 1px solid var(--accent); }
.relation-edge:hover, .similar-card-link:hover { border-color: var(--accent); }
.relation-line-label { color: var(--accent); font-size: 12px; }
.character-relation-item { margin: 9px 0; padding: 11px; border: 1px solid var(--line); border-radius: 7px; }
.character-relation-item .toolbar a { color: inherit; }
.relation-examples { display: grid; gap: 5px; margin-top: 8px; }
.relation-examples a { color: var(--blue); text-decoration: none; font-size: 12px; }
.relation-create-form { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); }
.relation-form-grid { display: grid; grid-template-columns: repeat(2, minmax(180px, 1fr)); gap: 8px 14px; }
.relation-example-picker { margin: 8px 0 14px; border: 1px solid var(--line); border-radius: 7px; }
.relation-example-options { display: grid; gap: 6px; padding: 8px; max-height: 180px; overflow: auto; }
.similar-character-groups { display: grid; gap: 14px; }
.similar-character-group { padding: 12px; border: 1px solid var(--line); border-radius: 7px; }
.similar-character-group h3 { margin: 0; }
.similar-card-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 9px; }
.similar-card-link { display: grid; min-width: 110px; gap: 2px; padding: 8px 10px; color: inherit; text-decoration: none; border: 1px solid var(--line); border-radius: 7px; background: #fff; }
.similar-card-link strong { font-size: 18px; }
.similar-card-link span { color: var(--muted); font-size: 12px; }

@media (max-width: 760px) {
  .character-relation-network { grid-template-columns: 1fr; }
  .relation-current-card { width: 110px; justify-self: center; }
  .relation-edge::before { display: none; }
  .relation-form-grid { grid-template-columns: 1fr; }
  .card-floating-nav { right: 10px; bottom: 10px; }
  .card-floating-nav select { max-width: 132px; }
}