* { box-sizing: border-box; }

html {
  min-height: 100%;
  background: var(--color-bg);
  color-scheme: dark;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 15% -10%, rgb(46 111 104 / 0.26), transparent 38rem),
    radial-gradient(circle at 95% 5%, rgb(185 139 63 / 0.12), transparent 34rem),
    var(--color-bg);
  color: var(--color-text);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body.has-open-modal { overscroll-behavior: none; }

button, input, select, textarea { font: inherit; }
button { color: inherit; }

button:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: var(--space-4);
  top: -5rem;
  z-index: 1000;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  background: var(--paper-50);
  color: var(--ink-950);
}
.skip-link:focus { top: var(--space-4); }

.ambient {
  position: fixed;
  z-index: -1;
  border-radius: 999px;
  filter: blur(60px);
  pointer-events: none;
}
.ambient-one { width: 14rem; height: 14rem; top: 18%; left: -8rem; background: rgb(46 111 104 / 0.16); }
.ambient-two { width: 18rem; height: 18rem; right: -12rem; bottom: 8%; background: rgb(185 139 63 / 0.1); }

.app-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.25rem;
  padding: max(var(--space-2), env(safe-area-inset-top)) var(--space-4) var(--space-2);
  border-bottom: 1px solid rgb(225 196 127 / 0.12);
  background: rgb(8 16 23 / 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 2.75rem;
  padding: 0;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 2.45rem;
  height: 2.45rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 50%;
  color: var(--color-primary);
  font-family: Georgia, serif;
  box-shadow: inset 0 0 0 4px rgb(225 196 127 / 0.05);
}
.brand strong { display: block; font-family: Georgia, "Songti SC", serif; letter-spacing: 0.08em; }
.brand small { display: block; color: var(--color-text-muted); font-size: 0.62rem; letter-spacing: 0.14em; }
.header-actions { display: flex; gap: var(--space-2); }

.icon-button {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface-soft);
  cursor: pointer;
  transition: background var(--duration-fast), border-color var(--duration-fast);
}
.icon-button:hover { background: var(--color-surface-raised); border-color: var(--color-border-strong); }

.app-shell {
  width: min(100%, 70rem);
  min-height: calc(100vh - 8.5rem);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) 7rem;
}

.loading-screen {
  display: grid;
  place-items: center;
  min-height: 60vh;
  color: var(--color-text-muted);
  text-align: center;
}
.case-stamp {
  width: max-content;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  font: 700 0.78rem/1 Georgia, serif;
  letter-spacing: 0.22em;
  transform: rotate(-2deg);
}

.bottom-nav {
  position: fixed;
  z-index: 35;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: var(--space-2) max(var(--space-4), env(safe-area-inset-right)) max(var(--space-2), env(safe-area-inset-bottom)) max(var(--space-4), env(safe-area-inset-left));
  border-top: 1px solid rgb(225 196 127 / 0.14);
  background: rgb(8 16 23 / 0.92);
  backdrop-filter: blur(18px);
}
.bottom-nav-item {
  display: grid;
  justify-items: center;
  gap: 0.1rem;
  min-height: 3.25rem;
  padding: var(--space-1);
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.72rem;
  cursor: pointer;
}
.bottom-nav-item > span:first-child { font-size: 1.15rem; }
.bottom-nav-item.is-active { color: var(--color-primary); background: rgb(225 196 127 / 0.07); }

.toast-root {
  position: fixed;
  z-index: 100;
  right: var(--space-4);
  bottom: 6rem;
  left: var(--space-4);
  display: grid;
  justify-items: center;
  pointer-events: none;
}

@media (min-width: 760px) {
  .app-header { padding-right: max(var(--space-6), calc((100vw - 70rem) / 2)); padding-left: max(var(--space-6), calc((100vw - 70rem) / 2)); }
  .app-shell { padding-top: var(--space-10); }
  .bottom-nav {
    right: auto;
    bottom: var(--space-5);
    left: 50%;
    width: 24rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    transform: translateX(-50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}

/* Content and component layer */
.eyebrow { color: var(--color-primary); font-size: .72rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.eyebrow > span { display: inline-block; width: 1.8rem; height: 1px; margin-right: var(--space-2); background: currentColor; vertical-align: middle; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: Georgia, "Songti SC", serif; }

.hero-grid { display: grid; gap: var(--space-8); align-items: center; }
.hero-copy h1 { margin: var(--space-3) 0 var(--space-4); font-size: clamp(3rem, 9vw, 4.5rem); line-height: .98; letter-spacing: -.04em; text-wrap: balance; }
.hero-copy h1 em { color: var(--color-primary); font-style: normal; }
.hero-copy > p { max-width: 38rem; color: var(--color-text-soft); font-size: 1.02rem; }
.hero-actions, .inline-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }
.primary-button, .secondary-button, .danger-button {
  display: inline-flex; align-items: center; justify-content: center; min-height: var(--button-height); padding: var(--space-2) var(--space-5); border-radius: var(--button-radius); font-weight: 700; cursor: pointer; transition: transform var(--duration-fast), background var(--duration-fast), border-color var(--duration-fast);
}
.primary-button { border: 1px solid var(--button-bg); background: var(--button-bg); color: var(--button-fg); }
.primary-button:hover:not(:disabled) { background: var(--button-hover-bg); transform: translateY(-1px); }
.secondary-button { border: 1px solid var(--color-border-strong); background: var(--color-surface-soft); color: var(--color-text); }
.secondary-button:hover:not(:disabled) { background: var(--color-surface-raised); }
.danger-button { border: 1px solid rgb(212 109 102 / .6); background: rgb(185 79 74 / .12); color: var(--color-danger); }
.primary-button:disabled, .secondary-button:disabled, .choice-button:disabled { opacity: .45; cursor: not-allowed; }
.primary-button.compact { min-height: 2.65rem; padding-inline: var(--space-4); }
.wide { width: 100%; }
.text-button, .back-button { min-height: 2.75rem; padding: var(--space-1) var(--space-2); border: 0; background: transparent; color: var(--color-primary); cursor: pointer; }

.hero-file, .chapter-card, .narrative-panel, .investigation-panel, .word-tray, .question-card, .review-card, .epilogue-card {
  border: 1px solid var(--card-border); border-radius: var(--card-radius); background: var(--card-bg); box-shadow: var(--shadow-sm);
}
.hero-file { position: relative; overflow: hidden; padding: var(--space-5); }
.hero-file::after { content: ''; position: absolute; inset: .6rem; border: 1px solid rgb(225 196 127 / .08); border-radius: calc(var(--card-radius) - .35rem); pointer-events: none; }
.file-topline { display: flex; align-items: baseline; justify-content: space-between; color: var(--color-primary); font-family: Georgia, serif; letter-spacing: .16em; }
.file-topline strong { font-size: 3rem; line-height: 1; }
.evidence-illustration { margin: var(--space-6) 0; }
.cabinet-shape { display: grid; grid-template-columns: repeat(3, 1fr); gap: .35rem; max-width: 20rem; margin: auto; padding: .6rem; border: 2px solid var(--color-border-strong); }
.cabinet-shape span { aspect-ratio: 1.45; border: 1px solid var(--color-border); background: rgb(255 255 255 / .035); }
.cabinet-shape .is-empty { background: radial-gradient(circle, transparent 30%, rgb(212 109 102 / .12)); border-color: rgb(212 109 102 / .6); }
.report-shape { position: relative; display: grid; gap: .38rem; max-width: 17rem; min-height: 8.8rem; margin: auto; padding: 1.1rem 1.25rem; border: 2px solid var(--color-border-strong); background: linear-gradient(145deg, rgb(225 196 127 / .035), rgb(255 255 255 / .015)); transform: rotate(-1deg); }
.report-shape::before { content: ''; position: absolute; top: -.35rem; right: .75rem; bottom: .35rem; left: -.35rem; z-index: -1; border: 1px solid rgb(225 196 127 / .22); transform: rotate(2deg); }
.report-shape span { display: block; height: .42rem; border-radius: 999px; background: rgb(225 196 127 / .22); }
.report-shape span:nth-child(1) { width: 56%; height: .72rem; margin-bottom: .5rem; background: rgb(225 196 127 / .42); }
.report-shape span:nth-child(2) { width: 92%; }
.report-shape span:nth-child(3) { width: 74%; }
.report-shape i { align-self: end; justify-self: end; width: 3.1rem; aspect-ratio: 1; border: 1px solid rgb(212 109 102 / .62); border-radius: 50%; box-shadow: inset 0 0 0 .3rem rgb(212 109 102 / .07); }
.seal-line { width: max-content; margin: var(--space-3) auto 0; padding: .2rem .6rem; border: 1px solid var(--color-primary); color: var(--color-primary); font-size: .65rem; letter-spacing: .14em; transform: rotate(-2deg); }
.case-facts { margin: 0; }
.case-facts > div { display: flex; justify-content: space-between; gap: var(--space-4); padding: var(--space-2) 0; border-top: 1px solid rgb(225 196 127 / .1); }
.case-facts dt { color: var(--color-text-muted); }
.case-facts dd { margin: 0; text-align: right; }

.dashboard-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); margin: var(--space-6) 0; }
.stat-card { padding: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-soft); }
.stat-card strong { display: block; margin-top: .15rem; color: var(--color-primary); font: 700 2rem/1 Georgia, serif; }
.stat-card small, .stat-label { color: var(--color-text-muted); font-size: .75rem; }
.alert-card strong { color: var(--color-danger); }
.section-block { margin-top: var(--space-10); }
.section-heading, .panel-heading { display: flex; align-items: end; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-4); }
.section-heading h2, .panel-heading h2 { margin: .2rem 0 0; }
.progress-block { margin: var(--space-4) 0; }
.progress-copy { display: flex; justify-content: space-between; color: var(--color-text-muted); font-size: .78rem; }
.progress-track, .test-progress { height: .35rem; margin-top: var(--space-2); overflow: hidden; border-radius: 999px; background: rgb(255 255 255 / .08); }
.progress-track span, .test-progress span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--color-accent), var(--color-primary)); }
.chapter-strip { display: grid; grid-template-columns: repeat(5, minmax(5rem, 1fr)); gap: var(--space-2); overflow-x: auto; padding-bottom: var(--space-2); }
.chapter-mini { min-width: 5.5rem; padding: var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.chapter-mini span, .chapter-mini small { color: var(--color-text-muted); font-size: .7rem; }
.chapter-mini strong { display: block; }
.chapter-mini.is-complete { border-color: rgb(102 164 122 / .55); }

.page-heading, .scene-header { max-width: 48rem; margin-bottom: var(--space-8); }
.page-heading h1, .scene-header h1 { margin: var(--space-2) 0; font-size: clamp(2.35rem, 9vw, 4.5rem); line-height: 1.05; }
.page-heading p, .scene-header p { color: var(--color-text-soft); }
.chapter-list { display: grid; gap: var(--space-5); }
.chapter-card { display: grid; grid-template-columns: 4.5rem 1fr; padding: var(--space-4); }
.chapter-number { color: rgb(225 196 127 / .2); font: 700 2.8rem/1 Georgia, serif; }
.chapter-body > span { color: var(--color-text-muted); font-size: .75rem; }
.chapter-body h2 { margin: 0 0 var(--space-3); }
.scene-list { display: grid; gap: var(--space-2); }
.scene-row, .archive-row { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--space-3); width: 100%; min-height: 4rem; padding: var(--space-2) var(--space-3); border: 1px solid transparent; border-radius: var(--radius-md); background: rgb(255 255 255 / .035); text-align: left; cursor: pointer; }
.scene-row:hover:not(:disabled), .archive-row:hover { border-color: var(--color-border); background: rgb(255 255 255 / .06); }
.scene-row:disabled { cursor: not-allowed; }
.scene-row.is-locked { border-color: rgb(147 159 166 / .12); background: rgb(255 255 255 / .018); color: var(--color-text-muted); }
.scene-index { color: var(--color-primary); font-family: Georgia, serif; }
.scene-title strong, .scene-title small { display: block; }
.scene-title { min-width: 0; }
.scene-title small { color: var(--color-text-muted); }
.scene-state { display: inline-flex; align-items: center; min-height: 1.75rem; padding: .2rem .55rem; border: 1px solid var(--color-border); border-radius: 999px; color: var(--color-primary); font-size: .7rem; font-weight: 700; white-space: nowrap; }
.scene-row.is-complete .scene-state { border-color: rgb(102 164 122 / .45); color: var(--color-success); }
.scene-row.is-locked .scene-state { border-color: rgb(147 159 166 / .28); background: rgb(147 159 166 / .06); color: var(--color-text-soft); }

.scene-header { max-width: 52rem; margin: 0 auto; }
.scene-kicker { color: var(--color-primary); font-size: .75rem; letter-spacing: .14em; }
.scene-art { position: relative; aspect-ratio: 16 / 9; max-height: 18rem; margin: var(--space-4) auto; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface-soft); box-shadow: var(--shadow-sm); }
.scene-art::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 48%, rgb(8 16 23 / .9)); pointer-events: none; }
.scene-art img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: var(--scene-art-position, center); }
.scene-art figcaption { position: absolute; z-index: 1; right: var(--space-4); bottom: var(--space-3); left: var(--space-4); display: flex; align-items: end; justify-content: space-between; gap: var(--space-3); margin: 0; }
.scene-art figcaption span { color: var(--color-primary); font: 700 .64rem/1 Georgia, serif; letter-spacing: .14em; }
.scene-art figcaption strong { color: var(--color-text); font-size: .8rem; text-align: right; }
.narrative-panel, .investigation-panel, .word-tray { max-width: 52rem; margin: 0 auto var(--space-5); padding: var(--space-5); }
.dialogue-block { display: grid; grid-template-columns: 4.75rem minmax(0, 1fr); gap: .1rem var(--space-3); align-items: start; padding: var(--space-4) 0; border-bottom: 1px solid rgb(225 196 127 / .1); }
.dialogue-block:last-child { border-bottom: 0; }
.speaker-portrait, .narrator-mark { grid-row: 1 / 3; width: 4.75rem; aspect-ratio: 4 / 5; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: radial-gradient(circle at 50% 30%, rgb(46 111 104 / .28), rgb(8 16 23 / .84)); }
.speaker-portrait img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: 50% 13%; filter: saturate(.82) contrast(1.03); }
.speaker-meta { display: flex; align-items: baseline; gap: var(--space-2); min-width: 0; }
.speaker-meta strong { color: var(--color-primary); font-size: .82rem; }
.speaker-meta small { color: var(--color-text-muted); font-size: .68rem; }
.dialogue-block p { grid-column: 2; margin: 0; color: var(--color-text-soft); font-size: 1.02rem; }
.narrator-mark { display: grid; place-content: center; width: 4.75rem; text-align: center; transform: rotate(-1deg); }
.narrator-mark span { color: var(--color-text-muted); font: 700 .58rem/1 Georgia, serif; letter-spacing: .16em; }
.narrator-mark strong { margin-top: .35rem; color: var(--color-primary); font-family: Georgia, "Songti SC", serif; font-size: 1rem; letter-spacing: .12em; }
.embedded-word { display: inline-flex; align-items: center; min-height: 2.75rem; margin: .16rem .08em; padding: .32rem .3em; border: 1px solid var(--word-border); border-radius: .35em; background: var(--word-bg); color: #9ed6cf; font-weight: 700; line-height: 1.25; vertical-align: middle; white-space: nowrap; cursor: pointer; }
.choice-grid, .answer-grid, .hotspot-grid { display: grid; gap: var(--space-3); }
.choice-button, .answer-button, .hotspot-card { min-height: 3.6rem; padding: var(--space-3) var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: rgb(255 255 255 / .035); text-align: left; cursor: pointer; }
.choice-button:hover:not(:disabled), .answer-button:hover:not(:disabled), .hotspot-card:hover { border-color: var(--color-border-strong); background: rgb(225 196 127 / .06); }
.choice-button.is-selected { border-color: var(--color-primary); background: rgb(225 196 127 / .12); }
.hotspot-card { position: relative; display: grid; grid-template-columns: auto 1fr; gap: .15rem var(--space-3); }
.hotspot-card small { grid-column: 2; color: var(--color-text-muted); }
.hotspot-dot { width: .75rem; height: .75rem; margin-top: .4rem; border: 2px solid var(--color-primary); border-radius: 50%; box-shadow: 0 0 0 .3rem rgb(225 196 127 / .08); }
.hotspot-card.is-selected { border-color: var(--color-primary); background: rgb(225 196 127 / .12); }
.hotspot-card.is-selected .hotspot-dot { background: var(--color-primary); }
.hotspot-card.is-inspected .hotspot-dot { background: var(--color-primary); }
.search-instruction { display: grid; gap: var(--space-1); margin-bottom: var(--space-4); padding: var(--space-3) var(--space-4); border-left: .2rem solid var(--color-primary); background: var(--color-surface-soft); }
.search-instruction span { color: var(--color-text-muted); font-size: .82rem; }
.search-confirm { position: sticky; bottom: 5rem; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); margin-top: var(--space-4); padding: var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: rgb(8 16 23 / .94); box-shadow: var(--shadow-sm); }
.search-confirm > span { color: var(--color-text-muted); font-size: .85rem; }
.search-confirm > span strong { color: var(--color-primary); font-size: 1.15rem; }
.filed-evidence-list { display: grid; gap: var(--space-3); }
.filed-evidence-list article { padding: var(--space-3) var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-soft); }
.filed-evidence-list span, .filed-evidence-list strong { display: block; }
.filed-evidence-list span { color: var(--color-primary); font-size: .68rem; letter-spacing: .12em; }
.filed-evidence-list p { margin: .35rem 0 0; color: var(--color-text-soft); }
.interaction-result, .question-feedback { margin: var(--space-4) 0; padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); }
.question-feedback { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0 var(--space-3); align-items: center; }
.interaction-result p, .question-feedback p { margin: .2rem 0 0; }
.question-feedback p { grid-column: 1; }
.question-feedback .primary-button { grid-column: 2; grid-row: 1 / 3; }
.interaction-result.is-correct, .question-feedback.is-correct { border: 1px solid rgb(102 164 122 / .45); background: rgb(102 164 122 / .1); }
.interaction-result.is-wrong, .question-feedback.is-wrong { border: 1px solid rgb(212 109 102 / .45); background: rgb(185 79 74 / .1); }
.order-target { display: grid; gap: var(--space-2); min-height: 4rem; margin-bottom: var(--space-3); padding: var(--space-3); border: 1px dashed var(--color-border-strong); border-radius: var(--radius-md); }
.order-target span { padding: .35rem .5rem; background: var(--color-surface-soft); }
.inline-actions { justify-content: space-between; margin-top: var(--space-3); }
.word-chip-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-2); }
.word-chip { min-height: 3.2rem; padding: var(--space-2) var(--space-3); border: 1px solid var(--color-border); border-left-width: .25rem; border-radius: var(--radius-sm); background: var(--color-surface-soft); text-align: left; cursor: pointer; }
.word-chip strong, .word-chip small { display: block; }
.word-chip small { color: var(--color-text-muted); }
.word-chip.tier-a { border-left-color: var(--color-danger); }
.word-chip.tier-b { border-left-color: var(--color-primary); }
.word-chip.tier-c { border-left-color: var(--color-accent); }
.scene-resume-card, .scene-gate-action { display: grid; gap: var(--space-3); max-width: 52rem; margin: 0 auto var(--space-5); padding: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--card-bg); box-shadow: var(--shadow-sm); }
.scene-resume-card { border-left: .25rem solid var(--color-primary); }
.scene-gate-action { margin-top: var(--space-5); }
.scene-resume-card .primary-button, .scene-gate-action .primary-button, .scene-gate-action .secondary-button { width: 100%; }
.gate-preview { display: grid; gap: .1rem; }
.gate-preview small { color: var(--color-text-muted); }

.test-shell, .review-shell, .complete-shell { width: min(100%, 46rem); margin: 0 auto; }
.test-topline { display: flex; justify-content: space-between; color: var(--color-text-muted); }
.test-toolbar { display: flex; justify-content: flex-end; gap: var(--space-2); margin-top: var(--space-3); }
.test-pause-button, .qa-skip-button { min-height: 2.75rem; padding: var(--space-1) var(--space-2); border-radius: var(--radius-pill); cursor: pointer; }
.test-pause-button { border: 0; background: transparent; color: var(--color-primary); }
.qa-skip-button { border: 1px solid rgb(224 178 92 / .5); background: rgb(224 178 92 / .1); color: var(--color-accent); font-weight: 700; }
.is-test-active .bottom-nav { display: none; }
.is-test-active .app-shell { padding-bottom: var(--space-8); }
.question-card { margin-top: var(--space-6); padding: clamp(var(--space-5), 6vw, var(--space-8)); }
.question-card h1 { margin: var(--space-4) 0; font-size: clamp(1.6rem, 6vw, 2.65rem); line-height: 1.25; }
.skill-tag, .tier-badge { display: inline-flex; padding: .2rem .6rem; border: 1px solid var(--color-border); border-radius: 999px; color: var(--color-primary); font-size: .72rem; }
.question-phonetic, .word-phonetic { color: var(--color-text-muted); }
.scene-hint-button { display: grid; grid-template-columns: auto 1fr; gap: 0 var(--space-3); width: 100%; margin: 0 0 var(--space-4); padding: var(--space-3); border: 1px dashed var(--color-border-strong); border-radius: var(--radius-md); background: var(--color-surface-soft); color: var(--color-text); text-align: left; cursor: pointer; transition: border-color var(--duration-fast), background var(--duration-fast); }
.scene-hint-button:hover { border-style: solid; background: rgb(225 196 127 / .07); }
.scene-hint-button > span { grid-row: 1 / 3; align-self: center; color: var(--color-primary); font-size: 1.5rem; }
.scene-hint-button strong, .scene-hint-button small { display: block; }
.scene-hint-button small { color: var(--color-text-muted); }
.scene-hint-locked { display: grid; gap: var(--space-1); margin: 0 0 var(--space-4); padding: var(--space-3) var(--space-4); border-left: .2rem solid var(--color-accent); background: var(--color-surface-soft); }
.scene-hint-locked span { color: #9ed6cf; font-weight: 700; }
.scene-hint-locked small { color: var(--color-text-muted); }
.answer-button.is-correct { border-color: var(--color-success); background: rgb(102 164 122 / .12); }
.answer-button.is-wrong { border-color: var(--color-danger); background: rgb(185 79 74 / .12); }
.spelling-field { display: grid; gap: var(--space-2); }
.spelling-field input { min-height: 3rem; padding: var(--space-2) var(--space-3); border: 1px solid var(--color-border-strong); border-radius: var(--radius-md); background: var(--color-surface); color: var(--color-text); }
.review-shell > h1, .complete-shell > h1 { margin: var(--space-2) 0; font-size: clamp(2.5rem, 10vw, 5rem); }
.review-shell > p, .complete-shell > p { color: var(--color-text-soft); }
.review-list { display: grid; gap: var(--space-3); margin: var(--space-6) 0; }
.review-card { padding: var(--space-4); }
.review-card > div { display: flex; justify-content: space-between; gap: var(--space-3); }
.review-card > div strong { color: var(--color-primary); font-size: 1.25rem; }
.review-card > div span, .review-card small { color: var(--color-text-muted); }
.review-card p { margin: .4rem 0; }

.archive-list { display: grid; gap: var(--space-2); }
.archive-tools { display: grid; grid-template-columns: minmax(0, 1.6fr) repeat(2, minmax(8rem, .7fr)); gap: var(--space-3); align-items: end; margin: 0 0 var(--space-4); padding: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface-soft); }
.archive-tools label { display: grid; gap: var(--space-1); }
.archive-tools label > span, .archive-tools > small { color: var(--color-text-muted); font-size: .75rem; }
.archive-tools input, .archive-tools select { width: 100%; min-height: 2.75rem; padding: var(--space-2) var(--space-3); border: 1px solid var(--color-border-strong); border-radius: var(--radius-md); background: var(--color-surface); color: var(--color-text); }
.archive-tools > small { grid-column: 1 / -1; }
.archive-row { grid-template-columns: 1fr auto; }
.archive-row span:first-child strong, .archive-row span:first-child small { display: block; }
.archive-row small { color: var(--color-text-muted); }
.mastery-stage { color: var(--color-primary); font-size: .75rem; }
.empty-state, .fatal-error { padding: var(--space-8); border: 1px dashed var(--color-border); border-radius: var(--radius-lg); color: var(--color-text-muted); text-align: center; }
.evidence-board { display: grid; gap: var(--space-4); }
.evidence-card { width: 100%; padding: var(--space-4); overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: linear-gradient(150deg, #2a302d, #171d1d); text-align: left; transform: rotate(var(--tilt)); }
.evidence-card.is-found { cursor: pointer; transition: transform var(--duration-normal), border-color var(--duration-fast), box-shadow var(--duration-normal); }
.evidence-card.is-found:hover { z-index: 2; border-color: var(--color-border-strong); box-shadow: var(--shadow-lg); transform: rotate(0) translateY(-.2rem); }
.evidence-card-media { aspect-ratio: 16 / 9; margin: -1rem -1rem var(--space-4); overflow: hidden; border-bottom: 1px solid var(--color-border); background: var(--color-bg); }
.evidence-card-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
.evidence-card-copy > span { color: var(--color-primary); font-size: .68rem; letter-spacing: .12em; }
.evidence-card h2 { margin: var(--space-2) 0; }
.evidence-card p { margin: 0; color: var(--color-text-soft); }
.evidence-card.is-locked { opacity: .38; filter: grayscale(1); }
.evidence-open-hint { display: block; margin-top: var(--space-4); color: var(--color-primary); font-weight: 700; }
.complete-shell { padding-top: var(--space-6); text-align: center; }
.complete-shell .case-stamp { margin: 0 auto var(--space-5); }
.epilogue-card { margin: var(--space-8) 0; padding: var(--space-6); text-align: left; }
.epilogue-card > span { color: var(--color-primary); font-size: .72rem; letter-spacing: .14em; }
.epilogue-card > strong { color: var(--color-primary); }

.modal-backdrop { position: fixed; z-index: 80; inset: 0; display: grid; place-items: end center; padding: var(--space-4); background: rgb(0 0 0 / .7); backdrop-filter: blur(6px); }
.word-modal, .settings-modal, .context-hint-modal, .evidence-modal { position: relative; width: min(100%, 32rem); max-height: calc(100vh - 2rem); overflow-y: auto; padding: var(--space-6); border: 1px solid var(--color-border-strong); border-radius: var(--radius-xl) var(--radius-xl) var(--radius-md) var(--radius-md); background: var(--color-surface); box-shadow: var(--shadow-lg); }
.word-archive-modal { width: min(100%, 42rem); }
.evidence-modal { width: min(100%, 44rem); }
.word-modal h1, .settings-modal h1, .context-hint-modal h1, .evidence-modal h1 { margin: var(--space-3) 0 0; font-size: 2.6rem; }
.word-modal h2 { color: var(--color-primary); }
.word-context-label { display: block; margin-top: var(--space-4); color: var(--color-text-muted); font-size: .68rem; letter-spacing: .12em; }
.dictionary-definition { margin: var(--space-4) 0; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-soft); }
.dictionary-definition summary { min-height: 2.75rem; padding: var(--space-3) var(--space-4); color: var(--color-primary); font-weight: 700; cursor: pointer; }
.dictionary-groups { display: grid; gap: var(--space-3); padding: 0 var(--space-4) var(--space-4); }
.dictionary-group { display: grid; grid-template-columns: 5.5rem minmax(0, 1fr); gap: var(--space-3); padding-top: var(--space-3); border-top: 1px solid rgb(225 196 127 / .12); }
.dictionary-group strong { color: var(--color-text); font-size: .78rem; }
.dictionary-group p { margin: 0; color: var(--color-text-soft); line-height: 1.7; }
.modal-close { position: absolute; top: var(--space-3); right: var(--space-3); width: 2.75rem; height: 2.75rem; border: 0; border-radius: 50%; background: var(--color-surface-raised); cursor: pointer; }
.word-modal-toolbar { position: sticky; z-index: 2; top: calc(-1 * var(--space-6)); display: flex; align-items: center; min-height: 4rem; margin: calc(-1 * var(--space-6)) calc(-1 * var(--space-6)) var(--space-3); padding: max(var(--space-2), env(safe-area-inset-top)) var(--space-4) var(--space-2); border-bottom: 1px solid rgb(225 196 127 / .12); background: rgb(13 28 36 / .94); backdrop-filter: blur(14px); }
.word-modal-back.modal-close { position: static; display: inline-flex; align-items: center; gap: var(--space-2); width: auto; min-width: 2.75rem; padding: 0 var(--space-3); border: 1px solid var(--color-border); border-radius: 999px; color: var(--color-text-soft); }
.word-modal-back > span { color: var(--color-primary); font-size: 1.65rem; font-weight: 400; line-height: 1; }
.word-modal-back > strong { font-size: .8rem; }
.word-meta { display: flex; justify-content: space-between; gap: var(--space-3); margin: var(--space-5) 0; color: var(--color-text-muted); font-size: .78rem; }
.settings-actions { display: grid; gap: var(--space-3); margin-top: var(--space-5); }
.settings-section { display: grid; gap: var(--space-3); margin-top: var(--space-5); padding: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-soft); }
.settings-section > div { display: flex; justify-content: space-between; gap: var(--space-3); }
.settings-section > div span, .settings-section > small { color: var(--color-text-muted); }
.settings-section > small { line-height: 1.5; }
.file-button { position: relative; }
.file-button:focus-within {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}
.file-button input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.context-history { margin-top: var(--space-6); padding-top: var(--space-5); border-top: 1px solid var(--color-border); }
.context-history-heading { display: grid; grid-template-columns: 1fr auto; align-items: end; margin-bottom: var(--space-3); }
.context-history-heading span { grid-column: 1 / -1; color: var(--color-primary); font-size: .66rem; letter-spacing: .14em; }
.context-history-heading h3 { margin: .25rem 0 0; font-family: Georgia, "Songti SC", serif; }
.context-history-heading small { color: var(--color-text-muted); }
.context-history-item { padding: var(--space-4) 0; border-top: 1px solid rgb(225 196 127 / .12); }
.context-history-item > div { display: flex; justify-content: space-between; gap: var(--space-3); }
.context-history-item > div span, .context-history-item > small { color: var(--color-text-muted); font-size: .75rem; }
.context-history-item p { margin: var(--space-2) 0; color: var(--color-text-soft); line-height: 1.75; }
.context-history-item mark, .context-hint-modal mark { padding: .08em .25em; border-radius: .3em; background: var(--word-bg); color: #9ed6cf; font-weight: 700; }
.meaning-badge { display: inline-flex; margin-top: var(--space-2); padding: .18rem .5rem; border: 1px solid var(--color-border); border-radius: 999px; color: var(--color-primary); font-size: .7rem; font-style: normal; }
.meaning-badge.is-variant { border-color: rgb(221 168 74 / .6); color: var(--color-warning); }
.context-empty { color: var(--color-text-muted); }
.context-source { display: flex; justify-content: space-between; gap: var(--space-3); margin: var(--space-5) 0 var(--space-3); color: var(--color-text-muted); font-size: .78rem; }
.context-source strong { color: var(--color-text); }
.context-hint-modal blockquote { margin: 0 0 var(--space-4); padding: var(--space-5); border: 1px solid var(--color-border); border-left: .25rem solid var(--color-primary); border-radius: var(--radius-md); background: var(--color-surface-soft); color: var(--color-text-soft); font: 1.05rem/1.8 Georgia, "Songti SC", serif; }
.context-hint-modal > small { color: var(--color-text-muted); }
.evidence-file-header { display: flex; align-items: center; gap: var(--space-3); padding-right: var(--space-10); }
.evidence-file-header > span { color: var(--color-primary); font: 700 1.25rem/1 Georgia, serif; letter-spacing: .12em; }
.evidence-file-header > em { padding: .18rem .55rem; border: 1px solid var(--color-border); border-radius: 999px; color: var(--color-text-muted); font-size: .72rem; font-style: normal; }
.evidence-summary { color: var(--color-text-soft); font-size: 1.05rem; }
.evidence-detail-media { aspect-ratio: 16 / 9; margin: var(--space-4) 0; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-bg); }
.evidence-detail-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
.evidence-source { margin: var(--space-5) 0; border-top: 1px solid var(--color-border); }
.evidence-source > div { display: flex; justify-content: space-between; gap: var(--space-4); padding: var(--space-2) 0; border-bottom: 1px solid rgb(225 196 127 / .1); }
.evidence-source dt { color: var(--color-text-muted); }
.evidence-source dd { margin: 0; text-align: right; }
.evidence-detail-section { margin: var(--space-5) 0; padding: var(--space-4); border-left: .2rem solid var(--color-accent); background: var(--color-surface-soft); }
.evidence-detail-section > span, .related-evidence > span { color: var(--color-primary); font-size: .68rem; font-weight: 700; letter-spacing: .12em; }
.evidence-detail-section h2 { margin: .25rem 0 var(--space-2); font-size: 1.15rem; }
.evidence-detail-section p { margin: 0; color: var(--color-text-soft); }
.evidence-detail-section.is-boundary { border-left-color: var(--color-warning); }
.related-evidence { margin: var(--space-5) 0; }
.related-evidence > div { display: grid; gap: var(--space-2); margin-top: var(--space-2); }
.related-evidence button { min-height: 2.75rem; padding: var(--space-2) var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-soft); text-align: left; cursor: pointer; }
.related-evidence button:hover { border-color: var(--color-border-strong); }
.toast { width: max-content; max-width: 100%; padding: var(--space-2) var(--space-4); border: 1px solid var(--color-border-strong); border-radius: 999px; background: var(--color-surface); box-shadow: var(--shadow-lg); color: var(--color-text); }
.case-selector-grid { display: grid; gap: var(--space-4); }
.case-selector-card { display: grid; gap: var(--space-4); padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface-soft); }
.case-selector-card.is-selected { border-color: var(--color-primary); box-shadow: inset .25rem 0 var(--color-primary); }
.case-selector-card > div > span { color: var(--color-primary); font-size: .7rem; font-weight: 700; letter-spacing: .1em; }
.case-selector-card h3 { margin: var(--space-2) 0; font: 1.35rem/1.3 Georgia, "Songti SC", serif; }
.case-selector-card p { margin: 0; color: var(--color-text-soft); }
.case-selector-card.is-preview { border-style: dashed; }

@media (min-width: 760px) {
  .hero-grid { grid-template-columns: 1.15fr .85fr; min-height: 32rem; }
  .hero-file { padding: var(--space-6); }
  .choice-grid, .answer-grid { grid-template-columns: repeat(2, 1fr); }
  .hotspot-grid { grid-template-columns: repeat(2, 1fr); }
  .word-chip-grid { grid-template-columns: repeat(4, 1fr); }
  .evidence-board { grid-template-columns: repeat(2, 1fr); }
  .case-selector-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scene-resume-card, .scene-gate-action { grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
  .scene-resume-card .primary-button, .scene-gate-action .primary-button, .scene-gate-action .secondary-button { width: auto; }
  .modal-backdrop { place-items: center; }
  .word-modal, .settings-modal, .context-hint-modal, .evidence-modal { border-radius: var(--radius-xl); }
}

@media (max-width: 640px) {
  .app-shell { padding-right: var(--space-3); padding-left: var(--space-3); }
  .narrative-panel { padding: var(--space-4); }
  .dialogue-block { grid-template-columns: 2.75rem minmax(0, 1fr); gap: var(--space-2) var(--space-3); padding: var(--space-4) 0; }
  .speaker-portrait, .narrator-mark { grid-row: 1; width: 2.75rem; aspect-ratio: 1; border-radius: 50%; }
  .narrator-mark { transform: none; }
  .narrator-mark span { display: none; }
  .narrator-mark strong { margin: 0; font-size: .72rem; letter-spacing: .08em; }
  .speaker-meta { align-self: center; align-items: flex-start; flex-direction: column; gap: 0; }
  .speaker-meta strong { font-size: .86rem; }
  .speaker-meta small { font-size: .7rem; }
  .dialogue-block p { grid-column: 1 / -1; font-size: 1.04rem; line-height: 1.95; }
  .embedded-word { position: relative; min-height: 2.1rem; margin: .08rem .04em; padding: .12rem .24em; border-color: rgb(76 148 139 / .42); border-radius: .28em; background: rgb(46 111 104 / .16); font-size: .95em; line-height: 1.35; touch-action: manipulation; }
  .embedded-word::after { position: absolute; content: ''; inset: -.24rem -.12rem; }
  .question-feedback { position: relative; z-index: 2; margin-bottom: 0; box-shadow: var(--shadow-sm); }
  .question-feedback .primary-button { min-width: 5.5rem; }
  .modal-backdrop { padding: 0; }
  .word-modal, .settings-modal, .context-hint-modal, .evidence-modal { width: 100%; max-height: 100dvh; border-right: 0; border-bottom: 0; border-left: 0; border-radius: var(--radius-xl) var(--radius-xl) 0 0; }
}

@media (max-width: 420px) {
  .dashboard-grid { gap: var(--space-2); }
  .stat-card { padding: var(--space-3); }
  .stat-card strong { font-size: 1.6rem; }
  .chapter-card { grid-template-columns: 1fr; }
  .chapter-number { font-size: 2rem; }
  .scene-row { grid-template-columns: auto minmax(0, 1fr); }
  .scene-state { grid-column: 2; justify-self: start; }
  .scene-art { max-height: 13rem; }
  .scene-art figcaption strong { max-width: 55%; }
  .search-confirm { align-items: stretch; flex-direction: column; }
  .search-confirm .primary-button { width: 100%; }
  .context-history-item > div, .context-source, .settings-section > div { align-items: flex-start; flex-direction: column; }
  .evidence-source > div { align-items: flex-start; flex-direction: column; }
  .evidence-source dd { text-align: left; }
  .archive-tools { grid-template-columns: 1fr 1fr; }
  .archive-search { grid-column: 1 / -1; }
  .dictionary-group { grid-template-columns: 1fr; gap: var(--space-1); }
}

@media (prefers-reduced-motion: reduce) {
  .evidence-card.is-found { transition: none; }
  .evidence-card.is-found:hover { transform: rotate(var(--tilt)); }
}