:root {
  --bg: #f4f2ec;
  --panel: #fffdf8;
  --ink: #24262a;
  --muted: #64665e;
  --line: #e2ddd1;
  --line-strong: #cec7b6;
  --accent: #2c5a86;
  --reading-size: 17px;
  --topbar-h: 56px;
  color-scheme: light;

  /* --hue 由 JS 依深度設定在元素上；色相衍生色直接寫在對應規則裡，
     不放在 :root，否則 var(--hue) 在 :root 無法解析。 */
  --cycle-ink: #a8462f;
  --cycle-ring: color-mix(in srgb, #c0563f 45%, transparent);
}

/* 暗底：明確選了就用這組；沒有選（data-theme 不存在）才跟隨系統，見下方 media。 */
html[data-theme="dark"] {
  --bg: #15171b;
  --panel: #1c1f24;
  --ink: #e8e4da;
  --muted: #9a9c95;
  --line: #2c3037;
  --line-strong: #3c424b;
  --accent: #8fb6dc;
  color-scheme: dark;

  --cycle-ink: #e09a86;
  --cycle-ring: color-mix(in srgb, #e09a86 35%, transparent);
}

/* 護眼：偏暖、低藍光的紙色（比亮底更黃，降低藍色成分；長時間閱讀較不刺眼）。 */
html[data-theme="eye"] {
  --bg: #f1e4cc;
  --panel: #faf2e0;
  --ink: #3a3225;
  --muted: #665b47;
  --line: #d8c7a8;
  --line-strong: #c2ad84;
  --accent: #7a581f;
  color-scheme: light;

  --cycle-ink: #9c4a2f;
  --cycle-ring: color-mix(in srgb, #b05a3a 40%, transparent);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: #15171b;
    --panel: #1c1f24;
    --ink: #e8e4da;
    --muted: #9a9c95;
    --line: #2c3037;
    --line-strong: #3c424b;
    --accent: #8fb6dc;
    color-scheme: dark;

    --cycle-ink: #e09a86;
    --cycle-ring: color-mix(in srgb, #e09a86 35%, transparent);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, "Microsoft JhengHei", "Noto Sans TC", "PingFang TC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

button {
  font-family: inherit;
}

/* ---------- 啟動 ---------- */

body.is-booting .topbar,
body.is-booting main,
body.is-booting .site-foot {
  display: none;
}

.boot {
  position: fixed;
  inset: 0;
  z-index: 250;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 22px;
  background: var(--bg);
}

.boot[hidden] {
  display: none;
}

.boot-card {
  display: flex;
  flex-direction: column;
  width: min(680px, 100%);
  max-height: calc(100vh - 44px);
  overflow: hidden;
  padding: clamp(22px, 5vw, 36px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: 0 20px 60px rgba(40, 34, 24, 0.14);
}

.boot-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 12px 0 10px;
}

.boot-actions .boot-catalog-count {
  margin-left: auto;
}

.boot-kicker {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.boot-card h1 {
  margin: 8px 0 10px;
  font-size: clamp(24px, 5vw, 32px);
  line-height: 1.25;
}

.boot-card p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.boot-open {
  padding: 9px 18px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--bg);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}

.boot-open:hover {
  filter: brightness(1.08);
}

.boot-open:disabled {
  opacity: 0.55;
  cursor: wait;
}

.boot-status {
  min-height: 1.6em;
  margin: 12px 0 0 !important;
  color: var(--cycle-ink) !important;
  font-size: 12px !important;
}

/* 啟動頁：data/ 中的 TSV 清單（檔案只列名稱，不含內容）。 */
.boot-catalog {
  display: flex;
  flex-direction: column;
  min-height: 0;
  margin: 0 0 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--bg) 45%, var(--panel));
}

.boot-catalog-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 11px 7px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.boot-catalog-count {
  margin-left: auto;
  color: var(--muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.boot-catalog-list {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 10px;
  min-height: 0;
  max-height: min(58vh, 540px);
  overflow: auto;
  padding: 5px;
}

.boot-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.boot-group-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 4px 6px 3px;
  border-bottom: 1px solid var(--line);
}

.boot-group-name {
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.boot-group-count {
  margin-left: auto;
  color: var(--muted);
  font-size: 10.5px;
  font-variant-numeric: tabular-nums;
}

.boot-group-actions {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: 4px;
}

.boot-group-items {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(235px, 1fr));
  gap: 2px;
}

.boot-tsv {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 7px 8px;
  border-radius: 7px;
  cursor: pointer;
}

.boot-tsv:hover {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.boot-tsv input {
  flex: 0 0 auto;
  accent-color: var(--accent);
}

.boot-tsv-name {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
}

.boot-tsv-id {
  color: var(--muted);
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 10.5px;
}

.boot-tsv-count {
  margin-left: auto;
  color: var(--muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.boot-tsv.is-hidden .boot-tsv-name {
  color: var(--muted);
  font-weight: 400;
}

.boot-catalog-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 8px 9px;
  border-top: 1px solid var(--line);
}

.boot-catalog-actions .boot-open {
  margin-left: auto;
  padding: 6px 14px;
  font-size: 13px;
}

.boot-link {
  padding: 2px 5px;
  border: 0;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.boot-link:hover {
  text-decoration: underline;
}

.boot-hint {
  margin: 0 !important;
  padding: 0 10px 9px;
  color: var(--muted) !important;
  font-size: 11.5px !important;
  line-height: 1.65 !important;
}

.boot-secondary {
  margin-top: 2px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

.boot-secondary:hover {
  border-color: var(--line-strong);
  color: var(--accent);
}

/* ---------- 頂欄 ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
  min-height: var(--topbar-h);
  padding: 8px clamp(12px, 3vw, 24px);
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.home-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--muted);
  font: inherit;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}

.home-icon:hover {
  border-color: var(--line-strong);
  color: var(--accent);
}

.topbar-spacer {
  flex: 1 1 auto;
  min-width: 0;
}

/* 索引入口：最左邊的單色小屋。 */
.index-home {
  color: var(--ink);
}

.index-home svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* 扳手：設置頁入口，固定在頂欄最右邊。 */
.settings-btn svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.settings-btn.is-custom {
  border-color: var(--accent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 9%, var(--panel));
}

.leave-btn svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.leave-btn:hover {
  border-color: var(--cycle-ink);
  color: var(--cycle-ink);
}

/* 有科目只存在記憶體、尚未寫回 TSV 時顯示。 */
.dirty-btn {
  flex: 0 0 auto;
  padding: 3px 9px;
  border: 1px solid var(--cycle-ring);
  border-radius: 999px;
  background: color-mix(in srgb, var(--cycle-ink) 8%, var(--panel));
  color: var(--cycle-ink);
  font: inherit;
  font-size: 11.5px;
  line-height: 1.6;
  white-space: nowrap;
  cursor: pointer;
}

.dirty-btn[hidden] {
  display: none;
}

.dirty-btn:hover {
  border-color: var(--cycle-ink);
  background: color-mix(in srgb, var(--cycle-ink) 14%, var(--panel));
}

.rank-select {
  max-width: 92px;
  padding: 4px 5px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-size: 11.5px;
  line-height: 1.5;
  cursor: pointer;
}

.rank-select:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.ghost {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 13px;
  white-space: nowrap;
  cursor: pointer;
}

.ghost:hover {
  border-color: var(--line-strong);
  background: color-mix(in srgb, var(--accent) 8%, var(--panel));
}

.subject {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.subject select {
  padding: 4px 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-size: 12px;
}

/* ---------- 版面 ---------- */

main {
  flex: 1 0 auto;
  width: 100%;
}

#reader {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 54px) clamp(18px, 4vw, 28px) 90px;
}

/* ---------- 條目 ---------- */

.entry-head {
  margin-bottom: 26px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.entry-kicker {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.entry-title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  min-width: 0;
}

.entry-title {
  flex: 0 1 auto;
  min-width: 0;
  margin: 2px 0 0;
  font-size: clamp(calc(var(--reading-size) * 1.4), 4vw, calc(var(--reading-size) * 1.8));
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

/* ---------- Hover popup：桌面閱讀時預覽引用 ---------- */

.hover-layer {
  position: fixed;
  inset: 0;
  z-index: 240;
  pointer-events: none;
}

.hover-layer[hidden] {
  display: none;
}

.hover-card {
  position: fixed;
  display: flex;
  flex-direction: column;
  width: min(380px, calc(100vw - 24px));
  max-height: min(62vh, 430px);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: color-mix(in srgb, var(--panel) 96%, transparent);
  box-shadow: 0 18px 46px rgba(38, 31, 22, 0.2);
  backdrop-filter: blur(10px) saturate(1.05);
  pointer-events: auto;
}

html[data-theme="dark"] .hover-card {
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.55);
}

.hover-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 8px;
  padding: 9px 11px 7px;
  border-bottom: 1px solid var(--line);
}

.hover-card-title {
  font-size: 14px;
}

.hover-card-domain {
  color: var(--muted);
  font-size: 11px;
}

.hover-card-hint {
  margin-left: auto;
  color: var(--muted);
  font-size: 10.5px;
}

.hover-card-body {
  min-height: 0;
  overflow: auto;
  padding: 8px 11px 10px;
  color: var(--ink);
  font-size: calc(var(--reading-size) * 0.84);
  line-height: 1.9;
  white-space: pre-wrap;
}

.hover-ref {
  cursor: pointer;
  white-space: normal;
}

.hover-card-body .nt-ref {
  font-size: inherit;
}

.hover-card-body .nt-ref.is-missing {
  border-bottom-style: dashed;
  color: var(--cycle-ink);
}

/* 反鏈接與正文同級，貼在標題右側；多筆時只讓這一列水平捲動。 */
.backlinks {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5em;
  margin-left: auto;
  min-width: 0;
  max-width: 78%;
  font-size: var(--reading-size);
  line-height: 2.05;
}

.backlinks-label,
.backlinks-count {
  flex: 0 0 auto;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.backlinks-count {
  margin-left: -0.25em;
  opacity: 0.7;
}

.backlink-search {
  flex: 0 0 auto;
  padding: 0 7px;
  border: 1px dashed var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 11px;
  line-height: 1.7;
  cursor: pointer;
}

.backlink-search:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.backlink.is-pending {
  padding: 0 7px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: var(--accent);
}

.backlink-pending-tag {
  margin-right: 3px;
  padding: 0 4px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--panel);
  font-size: 9px;
  line-height: 1.6;
}

.backlinks-list {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55em;
  min-width: 0;
  white-space: normal;
}

.backlinks-more {
  position: relative;
  display: inline-flex;
  align-items: baseline;
}

.backlinks-more-btn {
  padding: 0 2px;
  border-bottom: 1.5px solid var(--line-strong);
  color: var(--muted);
  cursor: pointer;
  list-style: none;
  white-space: nowrap;
}

.backlinks-more-btn::-webkit-details-marker {
  display: none;
}

.backlinks-more[open] .backlinks-more-btn,
.backlinks-more-btn:hover {
  border-bottom-color: var(--accent);
  color: var(--accent);
}

.backlinks-menu {
  position: absolute;
  top: calc(100% + 5px);
  right: 0;
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 180px;
  max-width: min(72vw, 360px);
  max-height: 260px;
  overflow-y: auto;
  padding: 6px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: var(--panel);
  box-shadow: 0 12px 32px rgba(30, 25, 18, 0.18);
}

.backlink-menu-item {
  width: 100%;
  padding: 4px 7px;
  border-bottom: 0;
  border-radius: 5px;
  text-align: left;
  white-space: normal;
}

.backlink-menu-item:hover {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.backlink {
  flex: 0 0 auto;
  margin: 0;
  padding: 0;
  border: 0;
  border-bottom: 1.5px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  font: inherit;
  line-height: inherit;
  white-space: nowrap;
  cursor: pointer;
}

.backlink:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.backlink:focus-visible {
  outline: none;
  border-bottom-width: 3px;
  border-bottom-color: var(--accent);
}

.backlink-domain {
  color: var(--muted);
}

.view-toggle {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 30px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
}

.view-toggle[hidden] {
  display: none;
}

.view-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--panel));
}

.view-toggle-text {
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
}

.view-toggle-icon {
  display: none;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
}

.view-toggle.is-graph .view-toggle-text {
  display: none;
}

.view-toggle.is-graph .view-toggle-icon {
  display: block;
}

.view-toggle:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 40%, transparent);
  outline-offset: 2px;
}

/* ---------- 圖譜 ---------- */

.graph-back {
  flex: 0 0 auto;
  margin-left: auto;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  white-space: nowrap;
  cursor: pointer;
}

.graph-back:hover {
  border-color: var(--line-strong);
  color: var(--accent);
}

/* 圖譜設定：半透明浮在畫布上，可收合成一行。 */
.graph-stage {
  position: relative;
  margin-top: 10px;
}

.graph-panel {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 4;
  width: min(370px, calc(100% - 20px));
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: color-mix(in srgb, var(--panel) 80%, transparent);
  box-shadow: 0 10px 30px rgba(30, 25, 18, 0.16);
}

.graph-panel.is-floating {
  position: fixed;
  z-index: 19;
}

.graph-panel.is-collapsed {
  width: auto;
}

.graph-panel-head {
  display: flex;
}

.graph-panel-toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  width: 100%;
  padding: 7px 10px;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 12px;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
}

.graph-panel-toggle:hover {
  background: color-mix(in srgb, var(--accent) 7%, transparent);
}

.graph-panel-toggle:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent);
  outline-offset: -2px;
}

.graph-panel-icon {
  color: var(--accent);
  font-size: 13px;
  line-height: 1;
}

.graph-panel-label {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.graph-panel-chevron {
  margin-left: auto;
  color: var(--muted);
  transition: transform 0.16s ease;
}

.graph-panel.is-collapsed .graph-panel-chevron {
  transform: rotate(-90deg);
}

.graph-panel-body {
  padding: 0 10px 8px;
  border-top: 1px solid var(--line);
}

.graph-panel.is-collapsed .graph-panel-body {
  display: none;
}

.graph-panel .graph-controls {
  margin: 8px 0 2px;
  gap: 7px 10px;
  font-size: 12px;
}

.graph-panel .graph-segment-control {
  gap: 5px;
}

.graph-control-label {
  color: var(--muted);
}

.graph-panel .graph-seg button {
  padding: 2px 7px;
  font-size: 11.5px;
  line-height: 1.5;
}

.graph-panel .graph-font-control input[type="range"] {
  width: 78px;
}

.graph-panel .graph-count {
  flex-basis: 100%;
  margin-left: 0;
  font-size: 11px;
}

.graph-panel .graph-legend {
  gap: 5px 9px;
  padding: 6px 0 4px;
  border-bottom: 0;
  font-size: 11px;
}

.graph-panel .graph-swatch {
  width: 14px;
  height: 8px;
}

.graph-panel .graph-legend-line {
  width: 20px;
}

.graph-panel .graph-reset {
  padding: 2px 8px;
  font-size: 11px;
}

.graph-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin: 18px 0 8px;
  font-size: 13px;
  color: var(--muted);
}

.graph-control,
.graph-check {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.graph-control select {
  padding: 3px 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-size: 12px;
}

.graph-check input {
  accent-color: var(--accent);
}

.graph-font-control input[type="range"] {
  width: 92px;
  accent-color: var(--accent);
}

.graph-font-value {
  min-width: 34px;
  font-variant-numeric: tabular-nums;
}

.graph-count {
  margin-left: auto;
  font-variant-numeric: tabular-nums;
}

.graph-reset {
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.graph-reset:hover {
  color: var(--accent);
  border-color: var(--line-strong);
}

.graph-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 8px 0 12px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}

.graph-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.graph-legend-label {
  color: var(--muted);
}

.graph-swatch {
  width: 18px;
  height: 9px;
  border-radius: 3px;
  background: hsl(var(--h) 60% 58%);
}

.graph-legend-line {
  width: 26px;
  border-top: 1.5px solid var(--muted);
}

.graph-legend-line.is-forward {
  border-top-style: solid;
}

.graph-legend-line.is-back {
  border-top-style: dashed;
}

.graph-legend-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--bg);
  font-size: 8px;
  font-weight: 600;
}

.graph-canvas {
  margin-top: 0;
  overflow: visible;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
}

.graph-focus-bar {
  position: fixed;
  left: 50%;
  bottom: max(14px, env(safe-area-inset-bottom));
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: calc(100vw - 24px);
  padding: 7px 8px 7px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel) 94%, transparent);
  box-shadow: 0 10px 28px rgba(38, 31, 22, 0.18);
  transform: translateX(-50%);
  backdrop-filter: blur(10px);
}

.graph-focus-label {
  overflow: hidden;
  color: var(--muted);
  font-size: 11.5px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.graph-focus-center {
  flex: 0 0 auto;
  padding: 3px 10px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--panel);
  font: inherit;
  font-size: 11.5px;
  line-height: 1.6;
  cursor: pointer;
}

.graph-focus-center:hover {
  filter: brightness(1.07);
}

.graph-arrow-head {
  fill: context-stroke;
}

.graph-svg {
  display: block;
  width: 100%;
  height: auto;
}

.graph-bg {
  fill: transparent;
}

.graph-edge {
  stroke: hsl(var(--hue) 45% 50% / 0.45);
  stroke-width: var(--graph-edge-width, 2.4px);
  fill: none;
}

.graph-edge.is-tree {
  stroke-opacity: 0.62;
}

.graph-edge.is-extra {
  stroke-opacity: 0.22;
}

.graph-edge.is-back {
  stroke-dasharray: 5 4;
}

/* 順鏈結固定實線；只有逆鏈結用虛線。 */
.graph-edge.is-forward {
  stroke-dasharray: none;
}

/* 聚焦逆鏈時，即使是同一條 forward 線，也改用虛線表示方向。 */
.graph-edge.is-inverse {
  stroke-dasharray: 5 4;
}

.graph-edge.is-lit {
  stroke: hsl(var(--hue) 70% 40%);
  stroke-width: calc(var(--graph-edge-width, 2.4px) * 1.7);
  opacity: 1;
}

.graph-edge.is-dim {
  opacity: 0.1;
}

.graph-node {
  cursor: pointer;
}

.graph-node:focus-visible {
  outline: none;
}

.graph-node:focus-visible .graph-node-shape {
  stroke-width: 3;
}

.graph-node-shape {
  /* 亮底／護眼：節點要看得出來是「有底色的形狀」，不能只靠描邊。
     86% 亮度在淺色紙面上仍有明顯色塊，文字（24%）也保持對比。 */
  fill: hsl(var(--hue) 58% 86%);
  stroke: hsl(var(--hue) 55% 48%);
  stroke-width: 1.5;
}

html[data-theme="eye"] .graph-node-shape {
  fill: hsl(var(--hue) 50% 84%);
}

.graph-node-label {
  fill: hsl(var(--hue) 55% 24%);
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: var(--graph-font-size, 12px);
  font-weight: 600;
  pointer-events: none;
}

.graph-node-halo {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.4;
  stroke-dasharray: 2 2;
  opacity: 0.8;
}

.graph-node.is-root .graph-node-shape {
  stroke-width: 2.6;
}

.graph-node.is-selected .graph-node-shape {
  stroke-width: 3.5;
  stroke: hsl(var(--hue) 70% 40%);
}

.graph-node.is-lit .graph-node-shape {
  stroke-width: 2.2;
}

.graph-node.is-dim {
  opacity: 0.22;
}

.graph-badge circle {
  fill: var(--ink);
}

.graph-badge text {
  fill: var(--bg);
  font-size: 8px;
  font-weight: 600;
}

.graph-note {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

.graph-tip {
  position: fixed;
  z-index: 120;
  width: max-content;
  max-width: min(340px, calc(100vw - 24px));
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--panel);
  box-shadow: 0 12px 32px rgba(40, 34, 24, 0.18);
  color: var(--ink);
  font-size: 12px;
  line-height: 1.65;
  pointer-events: none;
}

.graph-tip-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 2px;
}

.graph-tip-key {
  font-size: 14px;
}

.graph-tip-domain,
.graph-tip-meta {
  color: var(--muted);
  font-size: 11px;
}

.graph-tip-meta {
  margin-bottom: 5px;
  font-variant-numeric: tabular-nums;
}

.graph-tip-body {
  margin: 0;
  overflow-wrap: anywhere;
}

html[data-theme="dark"] .graph-node-shape {
  fill: hsl(var(--hue) 35% 22%);
  stroke: hsl(var(--hue) 60% 65%);
}

html[data-theme="dark"] .graph-node-label {
  fill: hsl(var(--hue) 55% 88%);
}

html[data-theme="dark"] .graph-edge {
  stroke: hsl(var(--hue) 55% 65% / 0.5);
}

html[data-theme="dark"] .graph-edge.is-lit {
  stroke: hsl(var(--hue) 80% 70%);
}

html[data-theme="dark"] .graph-node.is-selected .graph-node-shape {
  stroke: hsl(var(--hue) 80% 72%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .graph-node-shape {
    fill: hsl(var(--hue) 35% 22%);
    stroke: hsl(var(--hue) 60% 65%);
  }

  :root:not([data-theme]) .graph-node-label {
    fill: hsl(var(--hue) 55% 88%);
  }

  :root:not([data-theme]) .graph-edge {
    stroke: hsl(var(--hue) 55% 65% / 0.5);
  }

  :root:not([data-theme]) .graph-edge.is-lit {
    stroke: hsl(var(--hue) 80% 70%);
  }

  :root:not([data-theme]) .graph-node.is-selected .graph-node-shape {
    stroke: hsl(var(--hue) 80% 72%);
  }
}

.entry-alias {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

.nt-doc,
.nt-block,
.nt-line,
.nt-extra {
  display: block;
}

.nt-line {
  font-size: var(--reading-size);
  line-height: 2.05;
  word-break: break-word;
}

.nt-block + .nt-block {
  margin-top: 10px;
}

.nt-extra:empty {
  display: none;
}

/* ---------- 引用 ---------- */

.nt-ref {
  margin: 0;
  padding: 0;
  border: 0;
  border-bottom: 2px solid hsl(var(--hue) 55% 45%);
  background: transparent;
  color: hsl(var(--hue) 55% 30%);
  font: inherit;
  line-height: inherit;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.12s ease, border-color 0.12s ease;
}

.nt-ref:hover {
  color: hsl(var(--hue) 65% 22%);
  border-bottom-color: hsl(var(--hue) 60% 35%);
}

.nt-ref.is-open {
  border-bottom-width: 2.5px;
  border-bottom-color: hsl(var(--hue) 60% 40%);
}

.nt-ref:focus-visible {
  outline: none;
  border-bottom-width: 3px;
  border-bottom-color: hsl(var(--hue) 60% 30%);
}

/* 反鏈接跳轉後，標出來源條目裡指向原條目的那個引用。 */
.nt-ref.is-backlink-source {
  border-bottom-width: 4px;
  border-bottom-color: var(--accent);
  color: var(--ink);
  outline: 2px solid color-mix(in srgb, var(--accent) 38%, transparent);
  outline-offset: 3px;
}

/* ---------- 焦點模式：只留目前展開的那條路徑 ---------- */

/* 焦點模式：只留目前展開的那條路徑。父層退到背景，子節點保持清楚。 */
#reader.is-focusing .nt-dim,
#reader.is-focusing .is-dim {
  opacity: 0.35;
}

#reader.is-focusing .nt-ref.is-focus-ancestor,
#reader.is-focusing .cm-ref.is-focus-ancestor,
#reader.is-focusing .cm-focus-dim-text,
#reader.is-focusing .nt-focus-ancestor {
  opacity: 0.55;
}

#reader.is-focusing .is-focus-current,
#reader.is-focusing .nt-focus-current {
  opacity: 1;
}

#reader.is-focusing .nt-exp-inline.nt-focus-current {
  border-bottom-width: 2.5px;
}

html[data-theme="dark"] .nt-ref {
  color: hsl(var(--hue) 65% 78%);
  border-bottom-color: hsl(var(--hue) 55% 62%);
}

html[data-theme="dark"] .nt-ref:hover {
  color: hsl(var(--hue) 70% 86%);
  border-bottom-color: hsl(var(--hue) 60% 72%);
}

html[data-theme="dark"] .nt-ref.is-open {
  border-bottom-color: hsl(var(--hue) 60% 72%);
}

html[data-theme="dark"] .nt-ref:focus-visible {
  border-bottom-color: hsl(var(--hue) 70% 85%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .nt-ref {
    color: hsl(var(--hue) 65% 78%);
    border-bottom-color: hsl(var(--hue) 55% 62%);
  }

  :root:not([data-theme]) .nt-ref:hover {
    color: hsl(var(--hue) 70% 86%);
    border-bottom-color: hsl(var(--hue) 60% 72%);
  }

  :root:not([data-theme]) .nt-ref.is-open {
    border-bottom-color: hsl(var(--hue) 60% 72%);
  }

  :root:not([data-theme]) .nt-ref:focus-visible {
    border-bottom-color: hsl(var(--hue) 70% 85%);
  }
}

/* ---------- 展開內容 ---------- */

/* 行內展開只畫底線：用外框的話，換行時每個 span 片段都會多一圈框線。 */
.nt-exp-inline {
  display: inline;
  margin: 0 3px;
  padding: 0 4px 0 5px;
  border-bottom: 1.5px solid hsl(var(--hue) 55% 48%);
  border-left: 2px solid hsl(var(--hue) 55% 52% / 0.55);
  border-radius: 3px;
  background: color-mix(in srgb, hsl(var(--hue) 55% 70%) 12%, transparent);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.nt-exp-block {
  display: block;
  margin: 10px 0 6px 2px;
  padding: 8px 14px 10px;
  border-left: calc(2px + var(--depth, 1) * 1px) solid hsl(var(--hue) 55% 62%);
}

.nt-exp-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 2px;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 11px;
  line-height: 1.6;
  color: var(--muted);
}

.nt-exp-arrow {
  color: var(--muted);
}

.nt-exp-key {
  font-weight: 600;
  color: hsl(var(--hue) 45% 32%);
}

html[data-theme="dark"] .nt-exp-key {
  color: hsl(var(--hue) 55% 76%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .nt-exp-key {
    color: hsl(var(--hue) 55% 76%);
  }
}

.nt-exp-domain {
  color: var(--muted);
}

.nt-exp-close {
  margin-left: auto;
  width: 20px;
  height: 20px;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}

.nt-exp-close:hover {
  background: color-mix(in srgb, var(--ink) 8%, transparent);
  color: var(--ink);
}

/* 內嵌展開裡的所有結構都要留在行內，避免打斷句子。 */
.nt-doc.is-inline,
.nt-doc.is-inline > .nt-block,
.nt-doc.is-inline > .nt-block > .nt-line,
.nt-doc.is-inline > .nt-block > .nt-extra {
  display: inline;
}

.nt-doc.is-inline .nt-line {
  line-height: inherit;
}

.nt-doc.is-inline > .nt-block > .nt-extra:empty {
  display: none;
}

/* ---------- 提示 ---------- */

.nt-note {
  display: inline-block;
  margin-left: 4px;
  padding: 0 7px;
  border: 1px dashed hsl(var(--hue) 20% 62%);
  border-radius: 999px;
  background: var(--bg);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
  vertical-align: 1px;
}

.nt-note-cycle,
.nt-note-alias-loop {
  border-style: solid;
  border-color: var(--cycle-ring);
  color: var(--cycle-ink);
}

/* ---------- 索引 ---------- */

.index-hint {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--muted);
}

/* 索引科目分頁：一次只顯示一個科目，全部另成一頁。 */
.index-tabs {
  display: flex;
  gap: 4px;
  margin-top: 14px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: thin;
}

.index-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  margin: 0;
  padding: 7px 9px 6px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 13px;
  line-height: 1.4;
  cursor: pointer;
}

.index-tab:hover {
  color: var(--ink);
}

.index-tab.is-active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.index-tab-count {
  font-size: 11px;
  opacity: 0.65;
  font-variant-numeric: tabular-nums;
}

.index-search-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
}

.index-search-label {
  flex: 0 1 320px;
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  max-width: 320px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--panel);
  color: var(--muted);
  font-size: 12px;
}

.index-search-label:focus-within {
  border-color: var(--accent);
}

.index-search {
  flex: 1 1 auto;
  min-width: 0;
  padding: 9px 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  outline: none;
}

.index-search-clear {
  flex: 0 0 auto;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--muted);
  font: inherit;
  font-size: 11.5px;
  cursor: pointer;
}

.index-search-clear:hover {
  color: var(--ink);
}

.index-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-top: 9px;
}

.index-views {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.index-view {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.index-view:hover {
  color: var(--ink);
}

.index-view.is-active {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--ink);
}

.index-view-count {
  font-size: 10.5px;
  opacity: 0.7;
  font-variant-numeric: tabular-nums;
}

.index-sort {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  color: var(--muted);
  font-size: 12px;
}

.index-sort-select {
  max-width: 160px;
  padding: 4px 6px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.index-summary {
  margin: 9px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

.index-result-count {
  margin: 14px 0 2px;
  font-size: 11.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.index-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 2px 14px;
}

.index-item {
  display: flex;
  align-items: stretch;
  min-width: 0;
  border-radius: 8px;
}

.index-main {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  padding: 8px 8px 8px 9px;
  border: 0;
  border-radius: 8px 0 0 8px;
  background: transparent;
  color: inherit;
  text-align: left;
  font: inherit;
  cursor: pointer;
}

.index-main:hover,
.index-main:focus-visible {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  outline: none;
}

.index-graph {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: center;
  width: 28px;
  height: 26px;
  margin-right: 3px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: transparent;
  color: color-mix(in srgb, var(--accent) 78%, var(--muted));
  font: inherit;
  cursor: pointer;
}

.index-graph-icon {
  display: block;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
}

.index-graph:hover,
.index-graph:focus-visible {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  outline: none;
}

.index-top {
  display: flex;
  align-items: baseline;
  gap: 6px;
  min-width: 0;
}

.index-key {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
}

.index-domain-tag,
.index-zero-tag {
  flex: 0 0 auto;
  padding: 0 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--muted);
}

.index-zero-tag {
  border-color: color-mix(in srgb, var(--cycle-ink) 45%, var(--line));
  color: var(--cycle-ink);
}

.index-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1px 7px;
  font-size: 10.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.index-stat.is-product {
  color: var(--ink);
  opacity: 0.7;
}

.index-stat.is-cross {
  color: var(--accent);
}

.index-preview {
  display: block;
  max-width: 100%;
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.index-more {
  display: block;
  margin: 14px auto 0;
  padding: 7px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-size: 12.5px;
  cursor: pointer;
}

.index-more:hover {
  border-color: var(--accent);
}

.index-empty {
  padding: 30px 0;
  color: var(--muted);
}

.index-empty strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
  color: var(--ink);
}

.index-empty p {
  margin: 0 0 12px;
  font-size: 13px;
}

.empty {
  padding: 40px 0;
  color: var(--muted);
}

.empty h2 {
  margin: 0 0 6px;
  font-size: 18px;
  color: var(--ink);
}

/* ---------- 頁尾 ---------- */

.site-foot {
  flex: 0 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 16px clamp(18px, 4vw, 28px) 44px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}

.legend {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend-swatches {
  display: inline-flex;
  gap: 4px;
}

.legend .chip {
  width: 18px;
  height: 9px;
  border-radius: 3px;
  background: hsl(var(--h) 60% 58%);
}

.foot-hint {
  margin-left: auto;
}

/* ---------- 手機／平板簡化介面 ---------- */

body.is-mobile-ui .site-foot,
body.is-mobile-ui #readHistory,
body.is-mobile-ui #editBtn,
body.is-mobile-ui #saveBtn,
body.is-mobile-ui #orphanBtn,
body.is-mobile-ui #exportBtn,
body.is-mobile-ui #leaveBtn,
body.is-mobile-ui #dirtyBtn,
body.is-mobile-ui .entry-orphan {
  display: none !important;
}

body.is-mobile-ui .topbar {
  flex-wrap: wrap;
  gap: 6px 8px;
  padding: 8px 12px;
}

body.is-mobile-ui .subject {
  margin-left: 0;
}

body.is-mobile-ui #reader {
  width: 100%;
  max-width: none;
  padding: 22px 16px 54px;
}

body.is-mobile-ui .entry-title {
  font-size: calc(var(--reading-size) * 1.35);
}

body.is-mobile-ui .entry-title-row {
  gap: 6px 10px;
}

.nt-mobile-read {
  display: inline-block;
  margin: 0 2px 2px 5px;
  padding: 0 7px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--panel);
  color: var(--accent);
  font: inherit;
  font-size: 11px;
  line-height: 1.7;
  vertical-align: baseline;
  cursor: pointer;
}

.nt-mobile-read:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 9%, var(--panel));
}

@media (max-height: 560px) {
  .boot-card {
    overflow: auto;
  }

  .boot-catalog-list {
    max-height: none;
    overflow: visible;
  }
}

@media (max-width: 1150px) {
  .topbar {
    gap: 5px 6px;
    padding-left: 12px;
    padding-right: 12px;
  }
}

/* ---------- 窄螢幕 ---------- */

@media (max-width: 760px) {
  .topbar {
    flex-wrap: wrap;
    gap: 6px 8px;
    padding: 8px 12px;
  }

  .rank-select {
    max-width: 108px;
  }

  #reader {
    padding: 24px 18px 70px;
  }

  .entry-title-row {
    gap: 6px 10px;
  }

  .backlinks {
    max-width: 66%;
    gap: 0.45em;
  }

  .graph-panel {
    top: 8px;
    left: 8px;
    right: 8px;
    width: auto;
  }

  .graph-panel.is-collapsed {
    left: auto;
    right: 8px;
    width: auto;
  }

  .graph-panel .graph-font-control input[type="range"] {
    width: 64px;
  }

  .graph-controls {
    gap: 8px 12px;
    font-size: 12px;
  }

  .graph-count {
    flex-basis: 100%;
    margin-left: 0;
  }

  .site-foot {
    padding: 16px 18px 40px;
  }

  .foot-hint {
    margin-left: 0;
  }

}

@media (max-width: 600px) {
  .entry-title {
    font-size: calc(var(--reading-size) * 1.3);
  }

  .subject {
    margin-left: auto;
  }
}

@media (max-width: 420px) {
  .subject {
    font-size: 0;
    gap: 0;
  }

  .subject select {
    font-size: 12px;
  }
}

/* ---------- 編輯器 ---------- */

.add-term-btn {
  position: fixed;
  z-index: 160;
  padding: 7px 13px;
  border: 0;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  box-shadow: 0 8px 22px rgba(30, 26, 20, 0.2);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.add-term-btn[hidden] {
  display: none;
}

.edit-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: rgba(25, 23, 20, 0.35);
  backdrop-filter: blur(2px);
}

.edit-panel {
  display: flex;
  flex-direction: column;
  width: min(980px, 100%);
  max-height: min(92vh, 900px);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: 0 24px 70px rgba(30, 25, 18, 0.28);
}

.edit-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}

.edit-kicker {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.edit-title {
  margin: 2px 0 0;
  font-size: 22px;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.edit-file {
  margin-top: 3px;
  font-size: 11px;
  color: var(--muted);
}

.edit-close {
  margin-left: auto;
  width: 30px;
  height: 30px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.edit-close:hover {
  background: color-mix(in srgb, var(--ink) 8%, transparent);
  color: var(--ink);
}

.edit-body {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  flex: 1;
  min-height: 0;
}

.edit-side {
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 12px;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 55%, var(--panel));
}

.edit-side-title {
  margin-bottom: 7px;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.edit-filter {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-size: 12px;
}

.edit-list {
  flex: 1;
  min-height: 0;
  margin-top: 8px;
  overflow: auto;
}

.edit-noun {
  display: flex;
  flex-direction: column;
  gap: 2px;
  width: 100%;
  padding: 6px 7px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.edit-noun:hover {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.edit-noun-key {
  font-size: 12px;
  font-weight: 600;
}

.edit-noun-preview {
  max-width: 100%;
  overflow: hidden;
  color: var(--muted);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.edit-empty {
  padding: 12px 4px;
  color: var(--muted);
  font-size: 12px;
}

.edit-main {
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 14px;
}

.edit-textarea {
  flex: 1;
  width: 100%;
  min-height: 320px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  font: inherit;
  font-size: var(--reading-size);
  line-height: 1.8;
  resize: vertical;
}

.edit-textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 35%, transparent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.edit-note {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}

.edit-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 12px;
}

.edit-primary,
.edit-secondary {
  padding: 6px 13px;
  border-radius: 999px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.edit-primary {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--bg);
}

.edit-primary:hover {
  filter: brightness(1.08);
}

.edit-primary:disabled {
  opacity: 0.55;
  cursor: wait;
}

.edit-secondary {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
}

.edit-secondary:hover {
  border-color: var(--line-strong);
  color: var(--accent);
}

.load-panel {
  width: min(580px, 100%);
  padding-bottom: 14px;
}

.load-panel > .edit-note {
  padding: 12px 18px 0;
  margin: 0;
  font-size: 13px;
}

.load-status {
  min-height: 1.5em;
  padding: 6px 18px 0;
  margin: 0;
  color: var(--cycle-ink);
  font-size: 12px;
  line-height: 1.6;
}

.load-panel .edit-actions {
  padding: 0 18px;
}

.reco-panel {
  width: min(760px, 100%);
}

.reco-panel > .edit-note {
  padding: 10px 18px 0;
  font-size: 12px;
}

.reco-list {
  min-height: 0;
  margin: 10px 18px;
  overflow: auto;
}

.reco-item {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 8px 4px;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}

.reco-item input {
  margin-top: 2px;
  accent-color: var(--accent);
}

.reco-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.reco-source {
  font-size: 12px;
  font-weight: 600;
}

.reco-context {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.reco-go {
  flex: 0 0 auto;
  margin-left: auto;
  padding: 2px 9px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--panel);
  font: inherit;
  font-size: 11px;
  line-height: 1.7;
  cursor: pointer;
}

.reco-go:hover {
  filter: brightness(1.07);
}

.reco-panel > .edit-actions {
  padding: 0 18px;
}

.edit-toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  z-index: 300;
  max-width: min(90vw, 480px);
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  font-size: 12px;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 8px);
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.edit-toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- 未存檔／離開 ---------- */

.leave-panel {
  width: min(560px, 100%);
}

.dirty-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 42vh;
  overflow: auto;
  padding: 4px 18px 8px;
}

.dirty-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 13px;
}

.dirty-item input {
  flex: 0 0 auto;
  accent-color: var(--accent);
}

.dirty-name {
  font-weight: 600;
}

.dirty-file {
  color: var(--muted);
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 10.5px;
}

.dirty-status {
  margin-left: auto;
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
}

.dirty-status.is-ok {
  color: var(--accent);
}

.dirty-status.is-error {
  color: var(--cycle-ink);
}

.dirty-note {
  margin: 0 18px 10px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.dirty-actions {
  padding: 0 18px 16px;
}

.dirty-actions .edit-actions {
  margin-top: 0;
}

/* ---------- 設置頁 ---------- */

.settings-backdrop {
  position: fixed;
  inset: 0;
  z-index: 180;
  background: rgba(24, 21, 16, 0.42);
  backdrop-filter: blur(2px);
}

.settings-backdrop[hidden],
.settings-box[hidden] {
  display: none;
}

.settings-box {
  position: fixed;
  z-index: 181;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(580px, calc(100vw - 24px));
  max-height: min(88vh, 760px);
  overflow: auto;
  padding: 16px 20px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: var(--panel);
  color: var(--ink);
  box-shadow: 0 24px 70px rgba(30, 25, 18, 0.3);
}

.set-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.set-head h2 {
  flex: 1 1 auto;
  margin: 0;
  font-size: 20px;
  line-height: 1.3;
  color: var(--accent);
}

.set-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
}

.set-close:hover {
  border-color: var(--line-strong);
  color: var(--ink);
}

.set-section {
  padding: 11px 0 5px;
  border-top: 1px solid var(--line);
}

.set-section h3 {
  margin: 0 0 7px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.set-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-size: 14px;
}

.set-row > span:first-of-type {
  min-width: 5em;
}

.seg {
  display: inline-flex;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 7px;
}

.seg button {
  padding: 4px 13px;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  line-height: 1.6;
  cursor: pointer;
}

.seg button:last-child {
  border-right: 0;
}

.seg button:hover {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.seg button.is-active {
  background: var(--accent);
  color: var(--panel);
  font-weight: 600;
}

.seg button:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent);
  outline-offset: -2px;
}

.font-range {
  display: inline-flex;
  flex: 1 1 auto;
  align-items: center;
  gap: 9px;
  min-width: 150px;
}

.font-range input[type="range"] {
  flex: 1 1 auto;
  accent-color: var(--accent);
}

.font-range output {
  flex: 0 0 auto;
  min-width: 3.4em;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.sim-demo {
  margin: 7px 0 5px;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--bg) 55%, var(--panel));
  font-size: 13px;
  line-height: 1.9;
}

.sim-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 2px 5px;
  border-radius: 5px;
}

.sim-row.is-active {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  box-shadow: inset 2px 0 0 var(--accent);
}

.sim-label {
  flex: 0 0 5.5em;
  color: var(--muted);
  font-size: 12px;
}

.sim-row.is-active .sim-label {
  color: var(--ink);
}

.sim-text {
  letter-spacing: 0.02em;
}

.sim-text em {
  color: var(--cycle-ink);
  font-style: normal;
  text-decoration: underline dotted;
  text-underline-offset: 3px;
}

.set-hint {
  flex: 1 1 100%;
  margin: 4px 0 0 24px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.set-foot {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.set-foot .set-hint {
  flex: 1 1 auto;
  margin: 0;
  font-variant-numeric: tabular-nums;
}

.set-done {
  padding: 5px 18px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--panel);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

.set-done:hover {
  filter: brightness(1.07);
}

@media (max-width: 760px) {
  .settings-box {
    top: auto;
    bottom: 0;
    transform: translateX(-50%);
    width: 100vw;
    max-height: 92vh;
    border-radius: 16px 16px 0 0;
    border-bottom: 0;
    padding: 16px 16px 18px;
  }

  .edit-backdrop {
    padding: 8px;
  }

  .edit-panel {
    max-height: 95vh;
  }

  .edit-body {
    grid-template-columns: minmax(0, 1fr);
  }

  .edit-side {
    max-height: 220px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .edit-list {
    max-height: 145px;
  }

  .edit-main {
    min-height: 0;
  }

  .edit-textarea {
    min-height: 240px;
  }
}

/* ---------- 線上閱讀版：不提供編輯 ---------- */

body.is-readonly-online #editBtn,
body.is-readonly-online #saveBtn,
body.is-readonly-online #orphanBtn,
body.is-readonly-online #exportBtn,
body.is-readonly-online #dirtyBtn,
body.is-readonly-online .add-term-btn {
  display: none !important;
}

/* ---------- CodeMirror 內嵌編輯／閱讀 ---------- */

.edit-mode-btn,
.orphan-btn {
  flex: 0 0 auto;
}

/* 有草稿時「存檔（N）」會多佔一格；窄螢幕編輯時把閱讀歷史收起，讓設定圖示留在第一行。 */
@media (max-width: 1279px) {
  body.is-editing-entry #readHistory {
    display: none;
  }
}

.edit-mode-btn.is-active {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--panel));
  color: var(--accent);
}

.save-btn {
  flex: 0 0 auto;
  padding: 4px 12px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--panel);
  font: inherit;
  font-size: 12.5px;
  line-height: 1.45;
  white-space: nowrap;
  cursor: pointer;
}

.save-btn:hover {
  filter: brightness(1.06);
}

.save-btn:disabled {
  opacity: 0.6;
  cursor: wait;
}

.save-btn[hidden],
.orphan-btn[hidden],
.export-btn[hidden] {
  display: none;
}

.orphan-btn.is-empty {
  opacity: 0.55;
}

.entry-orphan {
  flex: 0 0 auto;
  margin-left: auto;
  padding: 1px 8px;
  border: 1px dashed var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 11px;
  line-height: 1.7;
  cursor: pointer;
}

.entry-orphan:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.entry.is-editing .entry-head {
  border-bottom-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}

.entry-body {
  position: relative;
}

.cm-offtext-root {
  background: transparent;
  color: var(--ink);
}

.cm-offtext-root .cm-scroller {
  overflow: visible;
}

.cm-offtext-root .cm-content {
  padding: 0;
  caret-color: var(--accent);
}

.cm-offtext-root .cm-line {
  padding: 0;
}

.cm-offtext-root.cm-editing .cm-content {
  border-radius: 4px;
  background: color-mix(in srgb, var(--accent) 3.5%, transparent);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 3.5%, transparent);
}

.cm-offtext-root.cm-readonly .cm-content {
  cursor: text;
}

/* 游標在 offtag 內：顯示原始 ^[...]，讓使用者直接改。 */
.cm-offtag-active {
  border-radius: 3px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 26%, transparent);
  color: var(--ink);
}

.cm-refwrap {
  display: inline;
}

.cm-ref {
  display: inline;
  white-space: normal;
}

.cm-ref.is-missing {
  border-bottom-style: dashed;
  color: var(--cycle-ink);
  border-bottom-color: var(--cycle-ring);
}

.cm-cancel-insert {
  display: inline-block;
  margin: 0 2px;
  padding: 0 5px;
  border: 1px solid var(--cycle-ring);
  border-radius: 999px;
  background: color-mix(in srgb, var(--cycle-ink) 7%, var(--panel));
  color: var(--cycle-ink);
  font: inherit;
  font-size: 10px;
  line-height: 1.55;
  vertical-align: 1px;
  cursor: pointer;
}

.cm-cancel-insert:hover {
  border-color: var(--cycle-ink);
  background: color-mix(in srgb, var(--cycle-ink) 13%, var(--panel));
}

.cm-ref-caret {
  display: inline-block;
  margin-left: 1px;
  padding: 0 2px;
  border-radius: 3px;
  color: hsl(var(--hue) 45% 45%);
  font-size: 12px;
  line-height: 1;
  opacity: 0;
  cursor: pointer;
  user-select: none;
  transition: opacity 0.12s ease;
}

.cm-refwrap:hover .cm-ref-caret,
.cm-ref-caret:focus-visible,
.cm-editing .cm-ref-caret {
  opacity: 0.55;
}

.cm-ref-caret:hover {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  opacity: 1;
}

.cm-note {
  margin-left: 3px;
}

/* 巢狀：widget 內再掛一個唯讀 EditorView，使用同一組裝飾規則。 */
.cm-nested {
  vertical-align: baseline;
}

.cm-nested-inline {
  display: inline-block;
  max-width: 100%;
  margin: 0 3px;
  padding: 0 4px 1px 5px;
  border-bottom: 1.5px solid hsl(var(--hue) 55% 48%);
  border-left: 2px solid hsl(var(--hue) 55% 52% / 0.55);
  border-radius: 3px;
  background: color-mix(in srgb, hsl(var(--hue) 55% 80%) 12%, transparent);
}

.cm-nested-inline .cm-editor {
  display: inline-block;
  width: max-content;
  max-width: 100%;
  vertical-align: baseline;
}

.cm-nested-inline .cm-scroller {
  width: max-content;
  max-width: 100%;
  overflow: visible;
}

.cm-nested-inline .cm-content {
  min-height: 0;
  padding: 0;
}

.cm-nested-inline .cm-line {
  padding: 0;
  font-size: var(--reading-size);
  line-height: 1.9;
}

.cm-exp-block .cm-nested-inline {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border-bottom: 0;
  background: transparent;
}

.cm-exp-block .cm-nested-inline .cm-editor {
  display: block;
  width: 100%;
}

.cm-exp-block .cm-nested-inline .cm-line {
  font-size: var(--reading-size);
  line-height: 1.9;
}

.cm-exp-head {
  gap: 7px;
}

.cm-exp-edit {
  margin-left: auto;
  padding: 0 7px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--panel);
  color: var(--muted);
  font: inherit;
  font-size: 10.5px;
  line-height: 1.6;
  cursor: pointer;
}

.cm-exp-edit:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.cm-exp-head .nt-exp-close {
  margin-left: 0;
}

.cm-focus-current,
.is-focus-current {
  border-bottom-width: 2.5px;
}

/* CM6 補全面板要蓋過浮窗。 */
.cm-tooltip {
  z-index: 300;
}

/* ---------- 孤兒節點浮窗 ---------- */

.orphan-panel {
  position: fixed;
  top: calc(var(--topbar-h) + 12px);
  right: clamp(10px, 3vw, 24px);
  z-index: 160;
  display: flex;
  flex-direction: column;
  width: min(370px, calc(100vw - 20px));
  max-height: min(72vh, 620px);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: color-mix(in srgb, var(--panel) 94%, transparent);
  box-shadow: 0 18px 46px rgba(38, 31, 22, 0.2);
  backdrop-filter: blur(10px) saturate(1.05);
}

html[data-theme="dark"] .orphan-panel {
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.55);
}

.orphan-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 11px;
  border-bottom: 1px solid var(--line);
}

.orphan-title {
  font-size: 12.5px;
  font-weight: 600;
}

.orphan-count {
  font-size: 11px;
  color: var(--muted);
}

.orphan-scope {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  color: var(--muted);
  font-size: 11px;
  cursor: pointer;
}

.orphan-scope input {
  width: 13px;
  height: 13px;
}

.orphan-close {
  width: 22px;
  height: 22px;
  padding: 0;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--muted);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
}

.orphan-close:hover {
  background: color-mix(in srgb, var(--ink) 8%, transparent);
  color: var(--ink);
}

.orphan-body {
  overflow: auto;
  padding: 6px;
}

.orphan-section-title {
  padding: 8px 7px 4px;
  color: var(--muted);
  font-size: 10.5px;
  letter-spacing: 0.04em;
}

.orphan-empty {
  padding: 6px 8px 10px;
  color: var(--muted);
  font-size: 12px;
}

.orphan-item {
  display: flex;
  flex-direction: column;
  gap: 1px;
  width: 100%;
  padding: 6px 8px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.orphan-item:hover {
  background: color-mix(in srgb, var(--accent) 9%, transparent);
}

.orphan-item.is-missing {
  border-left: 2px dashed var(--cycle-ring);
}

.orphan-item:disabled {
  opacity: 0.5;
  cursor: default;
}

.orphan-item-head {
  display: flex;
  align-items: baseline;
  gap: 6px;
  min-width: 0;
}

.orphan-item-key {
  font-size: 13px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.orphan-item-domain {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 10px;
}

.orphan-item-preview {
  overflow: hidden;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 存檔檢查 ---------- */

.check-panel {
  width: min(560px, calc(100vw - 28px));
}

.check-list {
  max-height: min(56vh, 440px);
  overflow: auto;
  padding: 4px 18px 10px;
}

.check-line {
  margin: 4px 0;
  padding: 5px 9px;
  border-left: 2px solid var(--line-strong);
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.6;
}

.check-line.is-error {
  border-left-color: var(--cycle-ink);
  color: var(--ink);
}

.check-subtitle {
  margin: 12px 0 2px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

@media (max-width: 720px) {
  .orphan-panel {
    top: auto;
    right: 10px;
    bottom: 10px;
    left: 10px;
    width: auto;
    max-height: 62vh;
  }

  .cm-nested-inline .cm-line,
  .cm-exp-block .cm-nested-inline .cm-line {
    font-size: 15.5px;
  }
}

/* ---------- 導覽 ---------- */

.tour-btn {
  position: relative;
  font-size: 17px;
}

.tour-btn::after {
  content: attr(data-tip);
  position: absolute;
  top: calc(100% + 7px);
  left: 50%;
  z-index: 60;
  padding: 3px 7px;
  border-radius: 5px;
  background: var(--ink);
  color: var(--bg);
  font-size: 10.5px;
  line-height: 1.4;
  white-space: nowrap;
  opacity: 0;
  transform: translate(-50%, -2px);
  transition: opacity 0.12s ease, transform 0.12s ease;
  pointer-events: none;
}

.tour-btn:hover::after,
.tour-btn:focus-visible::after {
  opacity: 1;
  transform: translate(-50%, 0);
}

.tour-btn[aria-expanded="true"]::after {
  opacity: 0;
}

.tour-menu {
  position: fixed;
  z-index: 280;
  width: min(320px, calc(100vw - 16px));
  padding: 10px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: 0 18px 50px rgba(30, 25, 18, 0.25);
}

.tour-menu[hidden] {
  display: none;
}

.tour-menu-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 2px 4px;
}

.tour-menu-title {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.tour-menu-close {
  margin-left: auto;
  width: 22px;
  height: 22px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
}

.tour-menu-close:hover {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: var(--ink);
}

.tour-menu-intro {
  margin: 2px 2px 7px;
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.55;
}

.tour-card {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  width: 100%;
  margin-top: 2px;
  padding: 8px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.tour-card.is-ready {
  border-color: color-mix(in srgb, var(--accent) 28%, var(--line));
  background: color-mix(in srgb, var(--accent) 5%, transparent);
}

.tour-card.is-ready:hover,
.tour-card.is-ready:focus-visible {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  outline: none;
}

.tour-card[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

.tour-card-icon {
  flex: 0 0 auto;
  width: 24px;
  padding-top: 1px;
  font-size: 16px;
  line-height: 1.4;
  text-align: center;
}

.tour-card-body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.tour-card-body strong {
  font-size: 13px;
  line-height: 1.45;
}

.tour-card-desc {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

.tour-card-badge {
  flex: 0 0 auto;
  align-self: center;
  padding: 1px 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 9.5px;
}

.tour-layer {
  position: fixed;
  inset: 0;
  z-index: 300;
}

.tour-layer[hidden] {
  display: none;
}

.tour-layer.is-full {
  background: rgba(14, 13, 11, 0.58);
}

.tour-spot {
  position: fixed;
  z-index: 0;
  border: 2px solid var(--accent);
  border-radius: 10px;
  box-shadow: 0 0 0 9999px rgba(14, 13, 11, 0.58);
  pointer-events: none;
}

.tour-spot[hidden] {
  display: none;
}

.tour-bubble {
  position: fixed;
  bottom: 22px;
  left: 50%;
  z-index: 2;
  width: min(430px, calc(100vw - 32px));
  padding: 13px 15px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  transform: translateX(-50%);
}

.tour-bubble[hidden] {
  display: none;
}

.tour-bubble.is-top {
  top: 22px;
  bottom: auto;
}

.tour-bubble:focus {
  outline: none;
}

.tour-head {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tour-step {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.tour-close {
  margin-left: auto;
  width: 24px;
  height: 24px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
}

.tour-close:hover {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: var(--ink);
}

.tour-title {
  margin: 4px 0 0;
  font-size: 16px;
  line-height: 1.45;
}

.tour-text {
  margin: 5px 0 0;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.7;
}

.tour-note {
  margin: 7px 0 0;
  color: var(--cycle-ink);
  font-size: 11.5px;
  line-height: 1.55;
}

.tour-note[hidden] {
  display: none;
}

.tour-foot {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}

.tour-hint {
  flex: 1 1 auto;
  color: var(--muted);
  font-size: 10.5px;
  line-height: 1.4;
}

.tour-next {
  flex: 0 0 auto;
  padding: 5px 13px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--bg);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.tour-next:hover {
  filter: brightness(1.08);
}

.tour-bar {
  position: absolute;
  right: 15px;
  bottom: 0;
  left: 15px;
  height: 2px;
  overflow: hidden;
  border-radius: 2px;
  background: var(--line);
}

.tour-bar-fill {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--accent);
}

@keyframes tourCountdown {
  from {
    width: 100%;
  }
  to {
    width: 0%;
  }
}

@media (max-width: 600px) {
  .tour-btn::after {
    display: none;
  }

  .tour-bubble {
    bottom: 12px;
    width: calc(100vw - 24px);
    padding: 12px 13px 10px;
  }

  .tour-bubble.is-top {
    top: 12px;
  }

  .tour-text {
    font-size: 12.5px;
  }
}