.page-story-map {
  /* 字段色板 */
  --fn-setup: #708c9e;
  --fn-advance: #4f836f;
  --fn-payoff: #c5912d;
  --fn-closure: #4e9a8f;
  --fn-rupture: #ad584f;
  --fn-hold: #8c887e;
  --mag-major: #3d5a74;
  --mag-minor: #7d93a4;
  --mag-transitional: #b3bcc2;
  --nec-essential: #3f7d5d;
  --nec-supporting: #708c9e;
  --nec-compressible: #c5912d;
  --nec-redundant: #ad584f;
  --tone-warm: #c98a4b;
  --tone-steady: #8a92a0;
  --tone-cold: #5f7fae;
  --tone-collapse: #8f3d3d;
  --theme-dream: #b08a3d;
  --theme-band: #4f836f;
  --theme-restart: #708c9e;
  --theme-control: #7a5b8f;
  --theme-labor: #a3705b;
  --theme-care: #c98a7a;
  --owner-band: #4f836f;
  --owner-arare: #c5912d;
  --owner-ritsu: #708c9e;
  --owner-miyako: #7a5b8f;
  --owner-viola: #ad584f;
  --owner-nonoka: #c98a7a;
  --owner-yuno: #5f7fae;
  /* 布局 */
  --label-w: 148px;
  --col-w: 118px;
  --chain-metric-w: 176px;
  min-width: 320px;
}

.page-story-map main {
  overflow: clip;
}

.page-story-map .site-nav a {
  padding-inline: 17px;
}

/* ———— 引言区 ———— */

.map-intro,
.map-controls,
.narrative-map,
.map-reading-guide {
  width: var(--content);
  margin-inline: auto;
}

.map-intro {
  padding-top: calc(var(--header-height) + 48px);
  padding-bottom: 28px;
}

.map-intro-meta {
  display: flex;
  justify-content: space-between;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--font-latin);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.13em;
}

.map-intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, 0.65fr);
  min-height: 320px;
  border-bottom: 1px solid var(--line-strong);
}

.map-intro-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 44px 7vw 44px 0;
  border-right: 1px solid var(--line-strong);
}

.map-intro-copy .eyebrow,
.map-section-heading .eyebrow,
.map-reading-guide .eyebrow {
  margin: 0 0 16px;
  color: var(--ink-soft);
  font-family: var(--font-latin);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.map-intro-copy h1 {
  max-width: 920px;
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(38px, 4.8vw, 72px);
  font-weight: 700;
  line-height: 1.16;
}

.map-intro-copy h1 span {
  display: block;
  font-size: 0.46em;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.map-thesis {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  padding: 30px 0 30px 34px;
}

.map-thesis-label {
  margin: 0 0 18px;
  font-family: var(--font-latin);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
}

.map-thesis-line {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

.map-thesis-line strong {
  font-family: var(--font-latin);
  font-size: 44px;
  font-weight: 400;
  line-height: 1;
}

.map-thesis-line span {
  font-size: 13px;
  letter-spacing: 0.04em;
}

.map-thesis-alert strong,
.map-thesis-alert span {
  color: var(--fn-rupture);
}

.map-method {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  padding: 14px 2px;
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
}

/* ———— 控制区：视图切换 ———— */

.map-controls {
  padding: 6px 0 18px;
}

.control-cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.control-cluster-secondary {
  margin-top: 10px;
}

.function-subviews {
  margin-top: 10px;
  padding-left: 12px;
  border-left: 3px solid var(--ink);
}

.function-subviews[hidden] {
  display: none;
}

.map-control-sub {
  padding-block: 6px;
  font-size: 12px;
}

.control-help {
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

.map-control {
  appearance: none;
  border: 1px solid var(--line-strong);
  background: transparent;
  padding: 8px 16px;
  font-family: inherit;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.map-control:hover {
  background: rgba(32, 47, 109, 0.08);
}

.map-control-strong,
.map-control[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.map-control-quiet {
  border-style: dashed;
  font-size: 12px;
  padding: 6px 12px;
}

.view-hint {
  margin: 14px 0 0;
  max-width: 860px;
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.view-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 12px;
}

.legend-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
}

.legend-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.03em;
}

.legend-chip small {
  display: block;
  margin-top: 1px;
  font-size: 10px;
  line-height: 1.35;
  color: var(--ink-faint);
  letter-spacing: 0;
}

.legend-swatch {
  width: 12px;
  height: 12px;
  background: var(--sw, #999);
  border: 1px solid rgba(32, 47, 109, 0.3);
}

.legend-box {
  width: 12px;
  height: 12px;
  border: 1px solid var(--fn-hold);
}

.legend-box.is-dash {
  border-style: dashed;
}

.legend-box.nec-essential {
  border-color: var(--nec-essential);
  border-left-width: 4px;
  background: color-mix(in srgb, var(--nec-essential) 48%, var(--paper));
}

.legend-box.nec-supporting {
  border-color: var(--nec-supporting);
  border-left-width: 3px;
  background: color-mix(in srgb, var(--nec-supporting) 44%, var(--paper));
}

.legend-box.nec-compressible {
  border-color: var(--nec-compressible);
  background-color: color-mix(in srgb, var(--nec-compressible) 38%, var(--paper));
  background-image: repeating-linear-gradient(45deg, transparent 0 3px, color-mix(in srgb, var(--nec-compressible) 48%, transparent) 3px 4px);
}

.legend-box.nec-redundant {
  border: 2px double var(--nec-redundant);
  background-color: color-mix(in srgb, var(--nec-redundant) 36%, var(--paper));
  background-image:
    repeating-linear-gradient(45deg, transparent 0 3px, color-mix(in srgb, var(--nec-redundant) 45%, transparent) 3px 4px),
    repeating-linear-gradient(-45deg, transparent 0 3px, color-mix(in srgb, var(--nec-redundant) 32%, transparent) 3px 4px);
}

.legend-box.is-proj {
  background: color-mix(in srgb, var(--fn-hold) 14%, var(--paper));
  clip-path: polygon(0 0, calc(100% - 4px) 0, 100% 4px, 100% 100%, 0 100%);
}

.legend-wait {
  width: 24px;
  border-bottom: 2px solid color-mix(in srgb, var(--ink-soft) 42%, transparent);
}

.legend-end {
  width: 11px;
  height: 11px;
  border: 2px solid var(--ink-soft);
  border-radius: 50%;
}

.legend-end.is-resolved {
  background: var(--ink-soft);
}

.legend-end.is-open {
  background: var(--paper);
}

.size-legend-axis {
  display: flex;
  flex: 1 1 100%;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px 16px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  color: var(--ink-soft);
}

.size-legend-axis > strong {
  min-width: 150px;
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.size-legend-axis > span:not(.legend-chip) b {
  color: var(--ink);
}

.size-legend-necessity .legend-chip {
  align-items: flex-start;
  min-width: 170px;
}

.size-legend-necessity .legend-box {
  flex: 0 0 22px;
  width: 22px;
  height: 18px;
  margin-top: 1px;
}

/* ———— 图谱区 ———— */

.narrative-map {
  padding: 22px 0 8px;
}

.map-section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-strong);
}

/* 共享复古样式(.theme-pixel-editorial .section-heading)会以同权重叠上整圈边框、
   拉伸单元格与64px大标题，且容器的底部内边距让注释格分隔竖线悬在底边框上方形成断线。
   此处用页内作用域（后加载胜出）收回本页布局：压平区块高度，分隔线直落底边框。 */
.page-story-map .map-section-heading {
  align-items: stretch;
  gap: 0;
  padding-bottom: 0;
}

.page-story-map .map-section-heading h2 {
  font-size: clamp(28px, 3.2vw, 46px);
}

.map-section-heading h2 {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(22px, 2.4vw, 34px);
}

.map-section-heading h2 span {
  display: block;
  font-family: var(--font-latin);
  font-size: 0.42em;
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--ink-soft);
  text-transform: uppercase;
}

.map-reading-note {
  max-width: 300px;
  margin: 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-soft);
  text-align: right;
}

.timeline-scroller {
  overflow-x: auto;
  padding: 14px 0 20px;
  scrollbar-width: thin;
}

.timeline-root {
  min-width: calc(var(--label-w) + var(--col-w) * var(--ep-count, 10));
}

.timeline-root.render-functions,
.timeline-root.render-debt {
  min-width: calc(var(--label-w) + var(--col-w) * var(--ep-count, 11) + var(--chain-metric-w));
}

/* 功能视图：问题链总览 */

.function-reading {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-bottom: 0;
  background: color-mix(in srgb, var(--ink) 4%, var(--paper));
}

.function-reading strong {
  font-family: "Noto Serif SC", serif;
  font-size: 16px;
  white-space: nowrap;
}

.function-reading span {
  max-width: 780px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.chain-table {
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line-strong);
}

.chain-grid-head,
.chain-summary-row,
.chain-row {
  display: grid;
  grid-template-columns: var(--label-w) repeat(var(--ep-count, 11), minmax(var(--col-w), 1fr)) var(--chain-metric-w);
}

.chain-grid-head > div,
.chain-summary-row > div {
  min-height: 36px;
  padding: 8px 6px;
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.chain-grid-head > div {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-latin);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.chain-grid-head > div:first-child,
.chain-grid-head > div:last-child {
  position: sticky;
  left: 0;
  z-index: 5;
  justify-content: flex-start;
  padding-inline: 12px;
  background: var(--paper);
}

.chain-grid-head > div:last-child {
  position: static;
}

.chain-summary-label {
  position: sticky;
  left: 0;
  z-index: 4;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--paper);
}

.chain-summary-label strong {
  font-size: 12px;
}

.chain-summary-label span {
  margin-top: 2px;
  font-size: 9.5px;
  color: var(--ink-soft);
}

.chain-concurrency-cell {
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--fn-advance) 8%, var(--paper));
  font-family: var(--font-latin);
  font-size: 18px;
}

.chain-summary-metric {
  display: grid;
  place-items: center;
  font-size: 11px;
  color: var(--ink-soft);
}

.chain-row {
  border-bottom: 1px solid var(--line-strong);
}

.chain-label {
  position: sticky;
  left: 0;
  z-index: 4;
  appearance: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 5px;
  min-height: 88px;
  padding: 10px 12px;
  border: 0;
  border-right: 1px solid var(--line-strong);
  background: var(--paper);
  color: var(--ink);
  font-family: inherit;
  text-align: left;
  cursor: pointer;
}

.chain-label:hover,
.chain-row.is-expanded .chain-label {
  background: color-mix(in srgb, var(--ink) 7%, var(--paper));
}

.chain-label strong {
  font-size: 12px;
  line-height: 1.55;
}

.chain-label > span:last-child {
  font-size: 9.5px;
  color: var(--ink-soft);
}

.chain-status {
  padding: 2px 5px;
  border: 1px solid var(--line-strong);
  font-size: 9px;
  letter-spacing: 0.08em;
}

.chain-status.is-open {
  border-color: var(--fn-rupture);
  color: var(--fn-rupture);
}

.chain-status.is-resolved {
  border-color: var(--fn-closure);
  background: color-mix(in srgb, var(--fn-closure) 12%, var(--paper));
}

.chain-cell {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 88px;
  padding: 7px 5px;
  border-right: 1px dashed var(--line);
}

.chain-track {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  z-index: 0;
  height: 2px;
  background: color-mix(in srgb, var(--ink-soft) 30%, transparent);
}

.chain-steps {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 100%;
}

.chain-step {
  appearance: none;
  max-width: calc(100% - 8px);
  padding: 3px 7px;
  border: 1px solid var(--nc);
  background: color-mix(in srgb, var(--nc) 18%, var(--paper));
  color: var(--ink);
  font-family: inherit;
  font-size: 9.5px;
  line-height: 1.3;
  cursor: pointer;
}

.chain-step:hover {
  background: color-mix(in srgb, var(--nc) 34%, var(--paper));
}

.chain-endpoint {
  position: absolute;
  right: -6px;
  top: calc(50% - 6px);
  z-index: 3;
  width: 12px;
  height: 12px;
  border: 2px solid var(--ink-soft);
  border-radius: 50%;
  background: var(--paper);
}

.chain-endpoint.is-resolved {
  border-color: var(--fn-closure);
  background: var(--fn-closure);
}

.chain-endpoint.is-open {
  border-color: var(--fn-rupture);
  background: var(--paper);
}

.chain-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-content: center;
  gap: 5px 8px;
  padding: 8px 10px;
  border-left: 1px solid var(--line-strong);
  background: color-mix(in srgb, var(--ink) 3%, var(--paper));
  font-size: 9.5px;
  color: var(--ink-soft);
}

.chain-metrics b {
  color: var(--ink);
  font-family: var(--font-latin);
  font-size: 11px;
}

.chain-expanded {
  grid-column: 1 / -1;
  padding: 14px;
  border-top: 1px dashed var(--line-strong);
  background: color-mix(in srgb, var(--fn-setup) 5%, var(--paper));
}

.chain-expanded > p {
  margin: 0 0 12px;
  font-size: 12.5px;
  line-height: 1.75;
}

.chain-event-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 8px;
}

.chain-event-card {
  appearance: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  min-height: 112px;
  padding: 10px;
  border: 1px solid var(--nc);
  border-left-width: 3px;
  background: var(--paper);
  color: var(--ink);
  font-family: inherit;
  text-align: left;
  cursor: pointer;
}

.chain-event-card:hover {
  background: color-mix(in srgb, var(--nc) 9%, var(--paper));
}

.chain-event-meta,
.chain-event-fn,
.chain-event-card small {
  font-size: 9.5px;
  color: var(--ink-soft);
}

.chain-event-card strong {
  font-size: 12px;
  line-height: 1.5;
}

.chain-event-fn {
  color: var(--nc);
  font-weight: 700;
}

.chain-event-card small {
  line-height: 1.5;
}

/* 功能视图：密度矩阵 */

.density-table {
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line-strong);
}

.density-head,
.density-row {
  display: grid;
  grid-template-columns: var(--label-w) repeat(var(--ep-count, 11), minmax(var(--col-w), 1fr));
}

.density-head > div,
.density-label,
.density-cell {
  min-height: 48px;
  border: 0;
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.density-head > div {
  display: grid;
  place-items: center;
  padding: 8px;
  font-family: var(--font-latin);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.density-head > div:first-child,
.density-label {
  position: sticky;
  left: 0;
  z-index: 4;
  background: var(--paper);
}

.density-label {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
}

.density-label i {
  width: 10px;
  height: 28px;
  background: var(--sw);
}

.density-label strong {
  font-size: 13px;
}

.density-label span {
  margin-left: auto;
  font-family: var(--font-latin);
  font-size: 11px;
  color: var(--ink-soft);
}

.density-cell {
  position: relative;
  appearance: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  overflow: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: inherit;
  cursor: pointer;
}

.density-fill {
  position: absolute;
  inset: 0;
  background: var(--nc);
  opacity: calc(0.04 + var(--heat) * 0.56);
}

.density-cell strong,
.density-cell small {
  position: relative;
  z-index: 1;
}

.density-cell strong {
  font-family: var(--font-latin);
  font-size: 20px;
  font-weight: 500;
}

.density-cell small {
  font-size: 9px;
  color: var(--ink-soft);
}

.density-cell:hover,
.density-cell.is-active {
  outline: 2px solid var(--ink);
  outline-offset: -3px;
}

.density-drill {
  padding: 14px;
  border: 1px solid var(--line-strong);
  border-top: 0;
}

.density-drill-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}

.density-drill-head span {
  font-size: 11px;
  color: var(--ink-soft);
}

.density-event-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.density-event {
  appearance: none;
  padding: 7px 10px;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  color: var(--ink);
  font-family: inherit;
  font-size: 11px;
  cursor: pointer;
}

.density-event span {
  margin-right: 7px;
  color: var(--ink-soft);
  font-size: 9px;
}

.density-event:hover {
  background: color-mix(in srgb, var(--ink) 7%, var(--paper));
}

/* 事件网格 */

.sm-grid {
  display: grid;
  grid-template-columns: var(--label-w) repeat(var(--ep-count, 10), minmax(var(--col-w), 1fr));
}

.sm-row {
  display: contents;
}

.sm-row-head .sm-rowlabel {
  border-bottom: 1px solid var(--line-strong);
}

.sm-ephead {
  appearance: none;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
  padding: 8px 4px;
  font-family: var(--font-latin);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink);
  cursor: pointer;
}

.sm-ephead:hover {
  background: rgba(32, 47, 109, 0.07);
}

.sm-ephead.is-focus {
  background: var(--ink);
  color: var(--paper);
}

.sm-rowlabel {
  position: sticky;
  left: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 12px;
  background: var(--paper);
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px dashed var(--line);
}

.sm-rowcopy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
}

.sm-rowname {
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.sm-rowquestion {
  max-width: 180px;
  font-size: 10.5px;
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0;
  color: var(--ink-soft);
}

.sm-grid[data-view="themes"] {
  --label-w: 220px;
}

.sm-rowcount {
  font-family: var(--font-latin);
  font-size: 11px;
  color: var(--ink-soft);
}

.sm-cell {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  min-height: 58px;
  padding: 6px 5px;
  border-left: 1px dashed var(--line);
  border-bottom: 1px dashed var(--line);
}

.sm-grid[data-focus] .sm-cell {
  transition: opacity 0.15s ease;
}

.sm-grid[data-focus="1"] .sm-cell:not([data-ep="1"]),
.sm-grid[data-focus="2"] .sm-cell:not([data-ep="2"]),
.sm-grid[data-focus="3"] .sm-cell:not([data-ep="3"]),
.sm-grid[data-focus="4"] .sm-cell:not([data-ep="4"]),
.sm-grid[data-focus="5"] .sm-cell:not([data-ep="5"]),
.sm-grid[data-focus="6"] .sm-cell:not([data-ep="6"]),
.sm-grid[data-focus="7"] .sm-cell:not([data-ep="7"]),
.sm-grid[data-focus="8"] .sm-cell:not([data-ep="8"]),
.sm-grid[data-focus="9"] .sm-cell:not([data-ep="9"]),
.sm-grid[data-focus="10"] .sm-cell:not([data-ep="10"]),
.sm-grid[data-focus="11"] .sm-cell:not([data-ep="11"]) {
  opacity: 0.18;
}

/* 事件节点 */

.sm-node {
  appearance: none;
  display: block;
  width: 100%;
  border: 1px solid var(--nc, var(--fn-hold));
  border-left-width: 3px;
  background: color-mix(in srgb, var(--nc, var(--fn-hold)) 10%, var(--paper));
  color: var(--ink);
  font-family: inherit;
  text-align: left;
  line-height: 1.5;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.sm-node:hover {
  transform: translateY(-1px);
  box-shadow: 2px 3px 0 rgba(32, 47, 109, 0.18);
}

.sm-node.size-major {
  padding: 7px 9px;
  font-size: 12.5px;
  font-weight: 600;
}

.sm-node.size-minor {
  padding: 5px 8px;
  font-size: 11.5px;
}

.sm-node.size-transitional {
  padding: 3px 7px;
  font-size: 10.5px;
  color: var(--ink-soft);
}

.sm-node.is-hold {
  border-style: dashed;
  border-left-style: dashed;
  background: transparent;
}

.sm-node.nec-compressible {
  background-color: color-mix(in srgb, var(--nc, var(--nec-compressible)) 5%, var(--paper));
  background-image: repeating-linear-gradient(
    45deg,
    transparent 0 4px,
    color-mix(in srgb, var(--nc, var(--fn-hold)) 16%, transparent) 4px 6px
  );
}

.sm-node.nec-redundant {
  border-style: double;
  border-width: 3px;
  background-color: color-mix(in srgb, var(--nc, var(--nec-redundant)) 5%, var(--paper));
  background-image:
    repeating-linear-gradient(45deg, transparent 0 4px, color-mix(in srgb, var(--nc, var(--nec-redundant)) 18%, transparent) 4px 6px),
    repeating-linear-gradient(-45deg, transparent 0 4px, color-mix(in srgb, var(--nc, var(--nec-redundant)) 13%, transparent) 4px 6px);
}

/* 量级×必要性：必要性是该视图的主编码，使用可远距离辨认的整块色面 */
.sm-grid[data-view="size"] .sm-node {
  border-color: color-mix(in srgb, var(--nc) 82%, var(--ink));
  border-left-width: 6px;
  background-color: color-mix(in srgb, var(--nc) 44%, var(--paper));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--nc) 20%, transparent);
}

.sm-grid[data-view="size"] .sm-node.nec-supporting {
  background-color: color-mix(in srgb, var(--nec-supporting) 42%, var(--paper));
}

.sm-grid[data-view="size"] .sm-node.nec-compressible {
  background-color: color-mix(in srgb, var(--nec-compressible) 36%, var(--paper));
  background-image: repeating-linear-gradient(
    45deg,
    transparent 0 5px,
    color-mix(in srgb, var(--nec-compressible) 48%, transparent) 5px 7px
  );
}

.sm-grid[data-view="size"] .sm-node.nec-redundant {
  border: 3px double color-mix(in srgb, var(--nec-redundant) 82%, var(--ink));
  border-left-width: 7px;
  background-color: color-mix(in srgb, var(--nec-redundant) 34%, var(--paper));
  background-image:
    repeating-linear-gradient(45deg, transparent 0 5px, color-mix(in srgb, var(--nec-redundant) 46%, transparent) 5px 7px),
    repeating-linear-gradient(-45deg, transparent 0 5px, color-mix(in srgb, var(--nec-redundant) 32%, transparent) 5px 7px);
}

/* 共同参与投影：切角小块。形状承载“辅属参与”，不占用虚线（维持）与斜纹（可压缩）的边框编码 */
.sm-node.is-proj {
  padding: 3px 8px;
  font-size: 10.5px;
  font-weight: 400;
  color: var(--ink-soft);
  border-width: 1px;
  border-left-width: 1px;
  background: color-mix(in srgb, var(--nc, var(--fn-hold)) 7%, var(--paper));
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 0 100%);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 0.6;
  transition: transform 0.12s ease, box-shadow 0.12s ease, opacity 0.12s ease;
}

.sm-node.is-proj:hover,
.sm-node.is-proj.is-active,
.sm-node.is-proj.is-linked {
  opacity: 1;
}

.sm-span.is-proj {
  opacity: 0.4;
}

.sm-node.is-active {
  outline: 2px solid var(--ink);
  outline-offset: 1px;
}

.sm-node.is-linked {
  outline: 2px dashed color-mix(in srgb, var(--theme-dream) 70%, var(--ink));
  outline-offset: 1px;
}

/* 跨集延续段 */

.sm-span {
  display: block;
  height: 4px;
  margin-top: auto;
  background: color-mix(in srgb, var(--nc, var(--fn-hold)) 38%, transparent);
}

/* ———— 阅读指南 ———— */

.map-reading-guide {
  padding: 30px 0 64px;
}

.map-reading-guide h2 {
  margin: 0 0 18px;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(20px, 2.2vw, 30px);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0;
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line-strong);
}

.guide-grid p {
  margin: 0;
  padding: 18px 20px;
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.guide-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
}

.guide-grid span {
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ———— 详情抽屉 ———— */

.detail-backdrop {
  position: fixed;
  inset: 0;
  top: var(--header-height);
  z-index: 110; /* 高于 .site-header:100，遮罩从顶栏下方起铺 */
  border: 0;
  background: rgba(32, 47, 109, 0.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.detail-backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.detail-drawer {
  position: fixed;
  top: var(--header-height);
  right: 0;
  z-index: 111; /* 高于顶栏，标题与关闭按钮不再被分享钮挡住 */
  display: flex;
  flex-direction: column;
  width: min(460px, 94vw);
  height: calc(100dvh - var(--header-height));
  background: var(--paper);
  border-left: 1px solid var(--line-strong);
  box-shadow: -14px 0 34px rgba(32, 47, 109, 0.14);
  transform: translateX(102%);
  transition: transform 0.24s ease;
}

.detail-drawer.is-open {
  transform: translateX(0);
}

/* 桌面端：抽屉不再是悬浮遮罩，而是把顶栏以下的整个界面往左推开。
   --content 同步减去抽屉宽度，各区块平滑收窄；图谱列宽不变，
   时间轴靠自己的横向滚动条消化宽度差，节点不被挤压。 */
@media (min-width: 921px) {
  .page-story-map main {
    transition: margin-right 0.24s ease;
  }

  .page-story-map .map-intro,
  .page-story-map .map-controls,
  .page-story-map .narrative-map,
  .page-story-map .map-reading-guide {
    transition: width 0.24s ease;
  }

  .page-story-map.detail-open {
    --content: min(1540px, calc(100vw - 36px - min(460px, 94vw)));
  }

  .page-story-map.detail-open main {
    margin-right: min(460px, 94vw);
  }

  .page-story-map .detail-backdrop {
    display: none;
  }
}

.detail-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 22px 24px 14px;
  border-bottom: 1px solid var(--line-strong);
}

.detail-header p {
  margin: 0 0 6px;
  font-family: var(--font-latin);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--ink-soft);
}

.detail-header h2 {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: 24px;
}

#detail-close {
  appearance: none;
  border: 1px solid var(--line-strong);
  background: transparent;
  width: 34px;
  height: 34px;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.detail-body {
  flex: 1;
  overflow-y: auto;
  padding: 18px 24px 24px;
}

.d-oneliner {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.9;
}

.d-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin: 0 0 18px;
  background: var(--line);
  border: 1px solid var(--line);
}

.d-field {
  background: var(--paper);
  padding: 8px 12px;
}

.d-field dt {
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

.d-field dd {
  margin: 3px 0 0;
  font-size: 13.5px;
  font-weight: 600;
}

.d-state {
  margin: 0 0 14px;
}

.d-state span,
.d-links span {
  display: block;
  margin-bottom: 5px;
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

.d-state p {
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
}

.d-links {
  margin: 0 0 14px;
}

.d-link {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 8px 8px 0;
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  background: transparent;
  font-family: inherit;
  font-size: 12.5px;
  color: var(--ink);
  cursor: pointer;
}

.d-link:hover {
  background: rgba(32, 47, 109, 0.08);
}

.d-link em {
  font-style: normal;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

.detail-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 14px 24px;
  border-top: 1px solid var(--line-strong);
}

#detail-copy {
  appearance: none;
  border: 1px solid var(--line-strong);
  background: transparent;
  padding: 8px 14px;
  font-family: inherit;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  cursor: pointer;
}

#detail-copy:hover {
  background: rgba(32, 47, 109, 0.08);
}

#detail-position {
  font-family: var(--font-latin);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

/* ———— 提示与错误 ———— */

.map-toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  z-index: 120;
  transform: translate(-50%, 12px);
  padding: 10px 18px;
  background: var(--ink);
  color: var(--paper);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

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

.map-error {
  padding: 30px;
  font-size: 14px;
  color: var(--fn-rupture);
}

/* ———— 响应式 ———— */

@media (max-width: 860px) {
  .map-intro {
    padding-top: calc(var(--header-height) + 24px);
  }

  .map-intro-meta {
    display: none;
  }

  .map-intro-grid {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .map-intro-copy {
    padding: 30px 0;
    border-right: 0;
    border-bottom: 1px dashed var(--line);
  }

  .map-thesis {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 14px;
    padding: 16px 0 20px;
  }

  .map-thesis-label {
    grid-column: 1 / -1;
    margin-bottom: 10px;
  }

  .map-thesis-line {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 8px 0;
  }

  .map-thesis-line strong {
    font-size: 30px;
  }

  .map-thesis-line span {
    font-size: 11.5px;
  }

  .map-section-heading {
    flex-direction: column;
    align-items: flex-start;
  }

  .map-reading-note {
    text-align: left;
  }

  .page-story-map {
    --label-w: 112px;
    --col-w: 96px;
    --chain-metric-w: 148px;
  }

  .sm-rowname {
    font-size: 12px;
  }

  .sm-grid[data-view="themes"] {
    --label-w: 178px;
  }

  .sm-rowquestion {
    font-size: 9.5px;
  }

  .function-reading {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .chain-label strong {
    font-size: 11px;
  }

  .chain-metrics {
    grid-template-columns: 1fr;
  }
}