:root {
  --bg: #0c0e11;
  --surface: #13161a;
  --surface-2: #191d22;
  --surface-3: #20252b;
  --paper: #ece3d4;
  --paper-dim: #a69d90;
  --muted: #716b63;
  --line: #2d3238;
  --line-strong: #454b53;
  --red: #f05a52;
  --orange: #ee9a52;
  --gold: #d8bd6a;
  --cyan: #47cbd7;
  --indigo: #7b78e8;
  --violet: #c879df;
  --green: #8abb76;
  --black: #090a0c;
  --shadow: 0 24px 64px rgba(0, 0, 0, .32);
  --serif: "STZhongsong", "Songti SC", "STSong", serif;
  --display: "FZKai-Z03", "STKaiti", "KaiTi", serif;
  --sans: "Microsoft YaHei UI", "Noto Sans SC", sans-serif;
  --mono: "Cascadia Code", "JetBrains Mono", "Consolas", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--paper);
  background: var(--bg);
  font-family: var(--sans);
  text-rendering: optimizeLegibility;
}

button,
input { font: inherit; }

button,
a { -webkit-tap-highlight-color: transparent; }

a { color: inherit; text-decoration: none; }

button { color: inherit; }

::selection { color: var(--black); background: var(--cyan); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: 4.5rem;
  padding: .7rem clamp(1rem, 3vw, 3.5rem);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: .8rem; }

.brand-mark {
  width: 2.6rem;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid var(--red);
  color: var(--red);
  font: 400 1.45rem/1 var(--display);
  transform: rotate(-4deg);
}

.brand > span:last-child { display: grid; gap: .18rem; }
.brand strong { font: 400 1rem/1 var(--serif); letter-spacing: .08em; }
.brand small { color: var(--muted); font: 600 .58rem/1 var(--mono); letter-spacing: .12em; }

.nav-links { display: flex; justify-content: center; gap: .3rem; }
.nav-links a { position: relative; padding: .65rem .75rem; color: var(--paper-dim); font-size: .78rem; }
.nav-links a::after { content: ""; position: absolute; left: .75rem; right: .75rem; bottom: .35rem; height: 1px; background: transparent; }
.nav-links a:hover,
.nav-links a.is-active { color: var(--paper); }
.nav-links a.is-active::after { background: var(--red); }

.version-pill {
  padding: .55rem .75rem;
  border: 1px solid var(--line);
  color: var(--paper-dim);
  font: 600 .64rem/1 var(--mono);
  letter-spacing: .08em;
}

.hero {
  min-height: 80vh;
  padding: clamp(5rem, 9vw, 9rem) clamp(1.2rem, 6vw, 7rem) clamp(4rem, 7vw, 7rem);
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(18rem, .65fr);
  gap: clamp(2rem, 8vw, 9rem);
  align-items: end;
  position: relative;
  border-bottom: 1px solid var(--line);
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  left: clamp(1.2rem, 6vw, 7rem);
  top: 7rem;
  width: 5rem;
  height: 1px;
  background: var(--red);
}

.hero-copy { position: relative; z-index: 2; animation: rise .7s ease both; }

.eyebrow {
  margin: 0 0 1.1rem;
  color: var(--paper-dim);
  font: 700 .68rem/1.4 var(--mono);
  letter-spacing: .2em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 68rem;
  margin: 0;
  font: 400 clamp(3.3rem, 7.6vw, 8.5rem)/.98 var(--serif);
  letter-spacing: -.065em;
}

.hero h1 span,
.hero h1 em { display: block; }
.hero h1 em { color: var(--red); font-style: normal; }

.hero-summary {
  max-width: 55rem;
  margin: 2.4rem 0 0;
  color: #c4bbad;
  font: 400 clamp(1rem, 1.5vw, 1.22rem)/1.95 var(--serif);
}

.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.6rem; margin-top: 2.2rem; }

.primary-action,
.jump-stage {
  border: 1px solid var(--paper);
  background: var(--paper);
  color: var(--black);
  padding: .82rem 1.05rem;
  cursor: pointer;
  transition: transform .2s ease, background .2s ease;
}

.primary-action:hover,
.jump-stage:hover { transform: translateY(-2px); background: #fff8ec; }
.text-action { color: var(--paper-dim); font-size: .82rem; }
.text-action:hover { color: var(--cyan); }

.hero-board {
  position: relative;
  z-index: 2;
  padding: 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  animation: rise .7s .12s ease both;
}

.board-title { display: grid; gap: .35rem; padding-bottom: 1.2rem; border-bottom: 1px solid var(--line); }
.board-title span { color: var(--red); font: 700 .64rem/1 var(--mono); letter-spacing: .16em; }
.board-title strong { font: 400 1.45rem/1.25 var(--serif); }

.hero-metrics { display: grid; grid-template-columns: 1fr 1fr; }
.hero-metrics div { min-height: 7rem; padding: 1rem .35rem; display: flex; flex-direction: column; justify-content: space-between; border-bottom: 1px solid var(--line); }
.hero-metrics div:nth-child(odd) { border-right: 1px solid var(--line); padding-right: 1rem; }
.hero-metrics div:nth-child(even) { padding-left: 1rem; }
.hero-metrics strong { font: 400 clamp(2rem, 4vw, 3.4rem)/1 var(--serif); }
.hero-metrics span { color: var(--paper-dim); font-size: .72rem; }

.canon-legend { display: grid; gap: .65rem; padding-top: 1.2rem; color: var(--paper-dim); font-size: .72rem; }
.canon-legend span { display: flex; align-items: center; gap: .55rem; }
.dot { width: .55rem; height: .55rem; display: inline-block; border-radius: 50%; }
.dot.confirmed { background: var(--green); }
.dot.draft { background: var(--gold); }
.dot.option { background: var(--violet); }

.hero-coordinate {
  position: absolute;
  right: 2vw;
  top: 9rem;
  z-index: 0;
  color: #14171a;
  font: 700 clamp(5rem, 15vw, 14rem)/1 var(--mono);
  letter-spacing: -.12em;
  white-space: nowrap;
  user-select: none;
}

.section { padding: clamp(5rem, 9vw, 9rem) clamp(1.2rem, 6vw, 7rem); border-bottom: 1px solid var(--line); }

.section-heading { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(18rem, .6fr); gap: 3rem; align-items: end; margin-bottom: 3rem; }
.section-heading h2 { margin: 0; font: 400 clamp(2.5rem, 5.8vw, 6rem)/1.04 var(--serif); letter-spacing: -.05em; }
.section-heading > p { margin: 0 0 .25rem; color: var(--paper-dim); line-height: 1.85; font-size: .92rem; }
.compact-heading { margin-bottom: 2rem; }

.story-section { background: var(--surface); }
.stage-rail { display: grid; grid-template-columns: repeat(8, minmax(8.4rem, 1fr)); gap: .45rem; overflow-x: auto; padding-bottom: .7rem; scrollbar-color: var(--line-strong) var(--surface); }

.stage-tab {
  min-height: 8.4rem;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: left;
  border: 1px solid var(--line);
  background: var(--surface-2);
  cursor: pointer;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.stage-tab:hover { transform: translateY(-3px); border-color: var(--line-strong); }
.stage-tab.is-active { background: var(--paper); color: var(--black); border-color: var(--paper); }
.stage-tab .tab-no { color: var(--red); font: 700 .72rem/1 var(--mono); }
.stage-tab.is-active .tab-no { color: #a73531; }
.stage-tab strong { font: 400 1.02rem/1.35 var(--serif); }
.stage-tab small { color: var(--paper-dim); font-size: .66rem; }
.stage-tab.is-active small { color: #665e54; }

.stage-focus { margin-top: 1rem; background: var(--bg); border: 1px solid var(--line-strong); box-shadow: var(--shadow); }
.stage-focus-main { padding: clamp(1.4rem, 4vw, 3.2rem); display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 1.6rem; align-items: start; border-bottom: 1px solid var(--line); }
.stage-number { min-width: 5rem; color: var(--red); font: 400 clamp(3.8rem, 8vw, 7rem)/.8 var(--serif); }
.stage-meta-line { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; color: var(--paper-dim); font: 600 .68rem/1 var(--mono); }
.status-badge { padding: .38rem .5rem; border: 1px solid currentColor; }
.status-badge.confirmed { color: var(--green); }
.status-badge.draft { color: var(--gold); }
.status-badge.option { color: var(--violet); }
.stage-focus h3 { margin: .9rem 0 .7rem; font: 400 clamp(2rem, 4vw, 4rem)/1.06 var(--serif); }
.stage-focus-main p { max-width: 64rem; margin: 0; color: #b8afa2; line-height: 1.85; }

.stage-world-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.world-card { min-height: 14rem; padding: 1.5rem; border-right: 1px solid var(--line); }
.world-card:last-child { border-right: 0; }
.world-card > span { font: 700 .62rem/1 var(--mono); letter-spacing: .12em; }
.new-world-card > span { color: var(--violet); }
.old-world-card > span { color: var(--red); }
.seed-card > span { color: var(--indigo); }
.world-card h4 { margin: .8rem 0; font: 400 1.3rem/1.25 var(--serif); }
.world-card p { margin: 0; color: var(--paper-dim); line-height: 1.78; font-size: .86rem; }

.stage-turn-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.stage-turn-grid div { min-height: 8.5rem; padding: 1.3rem 1.5rem; display: grid; align-content: start; gap: .75rem; border-right: 1px solid var(--line); }
.stage-turn-grid div:last-child { border-right: 0; }
.stage-turn-grid span { color: var(--paper-dim); font: 700 .64rem/1 var(--mono); letter-spacing: .1em; }
.stage-turn-grid strong { font: 400 1.05rem/1.55 var(--serif); }

.timeline-section { background: var(--bg); }
.timeline-actions,
.status-filters,
.character-toolbar { display: flex; flex-wrap: wrap; gap: .45rem; }

.chip,
.character-filter {
  padding: .6rem .8rem;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--paper-dim);
  cursor: pointer;
  font-size: .72rem;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.chip:hover,
.character-filter:hover { color: var(--paper); border-color: var(--line-strong); }
.chip.is-active,
.character-filter.is-active { color: var(--black); background: var(--paper); border-color: var(--paper); }

.timeline-shell { position: relative; overflow-x: auto; border: 1px solid var(--line-strong); background: var(--surface); box-shadow: var(--shadow); scrollbar-color: var(--line-strong) var(--surface); }
.timeline-connectors { position: absolute; inset: 0; width: 100%; min-width: 1200px; height: 100%; z-index: 3; pointer-events: none; overflow: visible; }
.connector-path { fill: none; stroke-width: 3; stroke-linecap: round; opacity: .88; transition: opacity .25s ease, stroke-width .25s ease; }
.connector-path.scientist { stroke: var(--cyan); }
.connector-path.seed { stroke: var(--indigo); stroke-dasharray: 7 7; }
.connector-path.return { stroke: var(--violet); }
.connector-path.is-muted { opacity: .08; }
.connector-path.is-active { stroke-width: 5; opacity: 1; }

.timeline-stage-heads,
.timeline-lane { min-width: 1200px; display: grid; grid-template-columns: 9rem minmax(0, 1fr); }
.timeline-stage-heads { min-height: 4.2rem; border-bottom: 1px solid var(--line); }
.timeline-stage-heads::before { content: "剧情阶段 →"; display: grid; place-items: center; color: var(--muted); border-right: 1px solid var(--line); font: 700 .62rem/1 var(--mono); }
.stage-head-grid,
.lane-events { display: grid; grid-template-columns: repeat(8, minmax(8.2rem, 1fr)); }
.timeline-stage-head { padding: .8rem .6rem; display: grid; align-content: center; gap: .25rem; border-right: 1px solid var(--line); cursor: pointer; }
.timeline-stage-head:last-child { border-right: 0; }
.timeline-stage-head span { color: var(--red); font: 700 .62rem/1 var(--mono); }
.timeline-stage-head strong { font: 400 .82rem/1.3 var(--serif); }
.timeline-stage-head.is-active { background: var(--paper); color: var(--black); }
.timeline-stage-head.is-active span { color: #a73531; }

.timeline-lane { min-height: 9.5rem; border-bottom: 1px solid var(--line); }
.timeline-lane:last-child { border-bottom: 0; }
.lane-label { padding: 1rem; display: flex; flex-direction: column; justify-content: center; gap: .35rem; border-right: 1px solid var(--line); }
.lane-label strong { font: 400 1.1rem/1 var(--serif); }
.lane-label span { color: var(--muted); font-size: .62rem; }
.old-lane .lane-label strong { color: var(--red); }
.hidden-lane .lane-label strong { color: var(--cyan); }
.new-lane .lane-label strong { color: var(--violet); }
.lane-cell { min-height: 9.5rem; padding: .65rem; display: flex; align-items: center; justify-content: center; border-right: 1px solid var(--line); position: relative; transition: background .2s ease; }
.lane-cell:last-child { border-right: 0; }
.lane-cell.is-active-stage { background: var(--surface-3); }

.event-token { width: 100%; padding: .7rem; text-align: left; border: 1px solid var(--line-strong); background: var(--bg); cursor: pointer; position: relative; z-index: 4; transition: transform .2s ease, border-color .2s ease, opacity .2s ease; }
.event-token:hover { transform: translateY(-3px); border-color: var(--paper-dim); }
.event-token span { display: block; margin-bottom: .35rem; font: 700 .58rem/1 var(--mono); letter-spacing: .08em; }
.event-token strong { display: block; font: 400 .78rem/1.4 var(--serif); }
.event-token.old span { color: var(--red); }
.event-token.new span { color: var(--violet); }
.event-token.scientist span { color: var(--cyan); }
.event-token.seed span { color: var(--indigo); }
.event-token.return span { color: var(--violet); }
.event-token.is-muted { opacity: .12; }
.event-token.is-highlighted { border-color: currentColor; }

.timeline-note { margin-top: 1rem; display: grid; grid-template-columns: auto 1fr; gap: 1.4rem; align-items: start; padding: 1rem 1.2rem; border-left: 3px solid var(--cyan); background: var(--surface); }
.timeline-note span { color: var(--cyan); font: 700 .65rem/1.3 var(--mono); }
.timeline-note p { margin: 0; color: var(--paper-dim); font-size: .82rem; line-height: 1.75; }

.character-section { background: var(--surface); }
.character-toolbar { margin-bottom: 1rem; }
.character-layout { display: grid; grid-template-columns: minmax(0, 1fr) 20rem; gap: 1rem; align-items: stretch; }
.character-chart-scroll { overflow-x: auto; background: var(--bg); border: 1px solid var(--line-strong); box-shadow: var(--shadow); scrollbar-color: var(--line-strong) var(--surface); }
.character-chart { display: block; width: 100%; min-width: 1050px; height: auto; }
.character-stage-line { stroke: var(--line); stroke-width: 1; }
.character-stage-label { fill: var(--muted); font: 10px var(--mono); letter-spacing: .05em; }
.character-row-label { fill: var(--paper); font: 16px var(--serif); }
.character-row-world { fill: var(--muted); font: 9px var(--mono); letter-spacing: .08em; }
.character-path { fill: none; stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; transition: opacity .25s ease, stroke-width .25s ease; }
.character-path.future-ghost { stroke-dasharray: 8 8; opacity: .45; }
.character-node { cursor: pointer; transition: opacity .25s ease; }
.character-node circle { fill: var(--bg); stroke-width: 3; transition: r .2s ease, fill .2s ease; }
.character-node text { fill: var(--paper-dim); font: 10px var(--sans); pointer-events: none; }
.character-node:hover circle,
.character-node.is-active circle { r: 9; fill: var(--paper); }
.character-path.is-muted,
.character-node.is-muted,
.mirror-link.is-muted { opacity: .08; }
.character-path.is-focus { stroke-width: 7; opacity: 1; }
.mirror-link { fill: none; stroke: var(--line-strong); stroke-width: 1.5; stroke-dasharray: 4 5; transition: opacity .25s ease; }

.character-inspector { padding: 1.5rem; background: var(--paper); color: var(--black); box-shadow: var(--shadow); }
.inspector-color { width: 3.8rem; height: .35rem; margin-bottom: 1.3rem; background: var(--gold); }
.character-inspector > span { color: #6e665d; font: 700 .65rem/1 var(--mono); letter-spacing: .12em; }
.character-inspector h3 { margin: .7rem 0 1rem; font: 400 2.15rem/1.08 var(--serif); }
.character-inspector > p { color: #544e47; line-height: 1.75; font-size: .86rem; }
.character-inspector dl { margin: 1.4rem 0 0; }
.character-inspector dl div { padding: .85rem 0; border-top: 1px solid #c8bdad; }
.character-inspector dt { margin-bottom: .35rem; color: #776f65; font: 700 .62rem/1 var(--mono); }
.character-inspector dd { margin: 0; font: 400 .9rem/1.55 var(--serif); }

.faction-section { background: var(--bg); }
.scale-layout { display: grid; grid-template-columns: minmax(17rem, .7fr) minmax(0, 1.3fr); gap: 1rem; }
.scale-list { display: grid; border: 1px solid var(--line-strong); }
.scale-item { min-height: 4.8rem; padding: .8rem 1rem; display: grid; grid-template-columns: 2.5rem 1fr auto; gap: .8rem; align-items: center; text-align: left; background: var(--surface); border: 0; border-bottom: 1px solid var(--line); cursor: pointer; }
.scale-item:last-child { border-bottom: 0; }
.scale-item:hover { background: var(--surface-2); }
.scale-item.is-active { background: var(--paper); color: var(--black); }
.scale-item .scale-no { color: var(--red); font: 700 .68rem/1 var(--mono); }
.scale-item strong { font: 400 1rem/1.3 var(--serif); }
.scale-item small { color: var(--paper-dim); font-size: .62rem; }
.scale-item.is-active small { color: #6a6259; }

.scale-inspector { min-height: 100%; padding: clamp(1.5rem, 4vw, 3rem); background: var(--surface-2); border: 1px solid var(--line-strong); }
.scale-code { color: var(--red); font: 700 .67rem/1 var(--mono); letter-spacing: .15em; }
.scale-inspector h3 { margin: .8rem 0; font: 400 clamp(2.2rem, 5vw, 5rem)/1 var(--serif); }
.scale-inspector > p { max-width: 52rem; color: var(--paper-dim); line-height: 1.8; }
.scale-detail-grid { display: grid; grid-template-columns: 1fr 1fr; margin: 2rem 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.scale-detail-grid div { min-height: 8rem; padding: 1rem; display: grid; align-content: start; gap: .7rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.scale-detail-grid span { color: var(--paper-dim); font: 700 .62rem/1 var(--mono); }
.scale-detail-grid strong { font: 400 1rem/1.5 var(--serif); }
.jump-stage { font-size: .78rem; }

.faction-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: .7rem; margin-top: 1rem; }
.faction-card { min-height: 13rem; padding: 1.2rem; border: 1px solid var(--line); background: var(--surface); }
.faction-card span { font: 700 .61rem/1 var(--mono); letter-spacing: .1em; }
.faction-card h3 { margin: .8rem 0; font: 400 1.3rem/1.2 var(--serif); }
.faction-card p { margin: 0; color: var(--paper-dim); font-size: .78rem; line-height: 1.65; }
.faction-card.public span { color: var(--cyan); }
.faction-card.capital span { color: var(--indigo); }
.faction-card.state span { color: var(--gold); }
.faction-card.old span { color: var(--red); }

.settings-section { background: var(--surface); }
.search-panel { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1rem; align-items: end; margin-bottom: 1rem; }
.search-box { display: grid; gap: .55rem; }
.search-box span { color: var(--paper-dim); font: 700 .64rem/1 var(--mono); letter-spacing: .1em; }
.search-box input { width: 100%; padding: 1rem 1.1rem; border: 1px solid var(--line-strong); outline: 0; background: var(--bg); color: var(--paper); }
.search-box input:focus { border-color: var(--cyan); }
.search-box input::placeholder { color: var(--muted); }

.setting-results { display: grid; grid-template-columns: repeat(3, 1fr); gap: .7rem; }
.setting-card { min-height: 15rem; padding: 1.2rem; display: flex; flex-direction: column; border: 1px solid var(--line); background: var(--bg); }
.setting-card-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.setting-status { padding: .32rem .45rem; border: 1px solid currentColor; font: 700 .58rem/1 var(--mono); }
.setting-status.confirmed { color: var(--green); }
.setting-status.draft { color: var(--gold); }
.setting-status.option { color: var(--violet); }
.setting-status.deferred { color: var(--paper-dim); }
.setting-card h3 { margin: 1rem 0 .7rem; font: 400 1.35rem/1.25 var(--serif); }
.setting-link:hover { color: var(--cyan); }
.setting-card p { margin: 0; color: var(--paper-dim); font-size: .82rem; line-height: 1.72; }
.setting-keywords { display: flex; flex-wrap: wrap; gap: .35rem; margin: 1rem 0; }
.setting-keywords span { padding: .3rem .42rem; color: var(--paper-dim); border: 1px solid var(--line); font-size: .62rem; }
.setting-source { margin-top: auto; padding-top: 1rem; display: grid; grid-template-columns: 1fr auto; gap: .8rem; align-items: end; border-top: 1px solid var(--line); }
.setting-source code { color: var(--muted); font: .6rem/1.5 var(--mono); overflow-wrap: anywhere; }
.copy-path { padding: .45rem .55rem; border: 1px solid var(--line); background: transparent; cursor: pointer; color: var(--paper-dim); font-size: .65rem; }
.copy-path:hover { color: var(--cyan); border-color: var(--cyan); }
.empty-results { grid-column: 1 / -1; padding: 3rem; text-align: center; color: var(--paper-dim); border: 1px dashed var(--line-strong); }

.length-section { background: var(--bg); }
.length-grid { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 1rem; }
.length-verdict { padding: clamp(1.5rem, 4vw, 3rem); background: var(--paper); color: var(--black); }
.length-verdict > span { color: #756d63; font: 700 .65rem/1 var(--mono); letter-spacing: .12em; }
.length-verdict > strong { display: block; margin: 1rem 0; font: 400 clamp(3.2rem, 7vw, 7rem)/.9 var(--serif); color: #a83b36; }
.length-verdict > p { max-width: 42rem; color: #514b44; line-height: 1.75; }
.length-output { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 2rem; border-top: 1px solid #bfb3a2; }
.length-output div { padding: 1rem .5rem; display: grid; gap: .4rem; border-right: 1px solid #bfb3a2; }
.length-output div:last-child { border-right: 0; }
.length-output span { color: #756d63; font-size: .68rem; }
.length-output strong { font: 400 1.1rem/1.3 var(--serif); }

.length-controls { padding: clamp(1.5rem, 4vw, 3rem); background: var(--surface); border: 1px solid var(--line-strong); }
.length-controls label { display: grid; gap: .8rem; margin-bottom: 1.7rem; }
.length-controls label:last-child { margin-bottom: 0; }
.length-controls label span { display: flex; justify-content: space-between; color: var(--paper-dim); font-size: .8rem; }
.length-controls b { color: var(--paper); }
input[type="range"] { width: 100%; accent-color: var(--red); cursor: pointer; }

footer { padding: 2rem clamp(1.2rem, 6vw, 7rem); display: flex; justify-content: space-between; gap: 1rem; color: var(--muted); background: var(--bg); font: .65rem/1.5 var(--mono); letter-spacing: .08em; }

.toast {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 100;
  padding: .8rem 1rem;
  color: var(--black);
  background: var(--paper);
  box-shadow: var(--shadow);
  font-size: .75rem;
  opacity: 0;
  transform: translateY(1rem);
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}
.toast.is-visible { opacity: 1; transform: translateY(0); }

@keyframes rise {
  from { opacity: 0; transform: translateY(1rem); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1120px) {
  .topbar { grid-template-columns: auto 1fr; }
  .version-pill { display: none; }
  .nav-links { justify-content: end; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-board { max-width: 38rem; }
  .section-heading { grid-template-columns: 1fr; gap: 1.2rem; }
  .character-layout { grid-template-columns: 1fr; }
  .character-inspector { min-height: 22rem; }
  .faction-cards { grid-template-columns: repeat(2, 1fr); }
  .setting-results { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 800px) {
  .topbar { display: flex; flex-wrap: wrap; gap: .7rem; }
  .nav-links { order: 3; width: 100%; justify-content: start; overflow-x: auto; padding-bottom: .2rem; }
  .nav-links a { white-space: nowrap; }
  .hero { padding-top: 5rem; }
  .hero h1 { font-size: clamp(3rem, 15vw, 5.2rem); }
  .hero-coordinate { display: none; }
  .stage-world-grid,
  .stage-turn-grid { grid-template-columns: 1fr; }
  .world-card,
  .stage-turn-grid div { border-right: 0; border-bottom: 1px solid var(--line); }
  .world-card:last-child,
  .stage-turn-grid div:last-child { border-bottom: 0; }
  .stage-focus-main { grid-template-columns: 1fr; }
  .stage-number { min-width: 0; }
  .scale-layout,
  .length-grid { grid-template-columns: 1fr; }
  .search-panel { grid-template-columns: 1fr; }
}

@media (max-width: 580px) {
  .brand small { display: none; }
  .section,
  .hero { padding-inline: 1rem; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .primary-action { text-align: center; }
  .hero-metrics strong { font-size: 2rem; }
  .stage-focus-main,
  .world-card,
  .stage-turn-grid div { padding-inline: 1rem; }
  .timeline-note { grid-template-columns: 1fr; }
  .scale-detail-grid { grid-template-columns: 1fr; }
  .faction-cards,
  .setting-results { grid-template-columns: 1fr; }
  .length-output { grid-template-columns: 1fr; }
  .length-output div { border-right: 0; border-bottom: 1px solid #bfb3a2; }
  .length-output div:last-child { border-bottom: 0; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
}