/* 枢纽入口与独立场景舱 */
:root {
  --atmosphere-cool: #7C93A0;
  --atmosphere-pale: #C9D2D6;
  --font-display: "Playfair Display", "Noto Serif SC", "Source Han Serif SC", serif;
}

body.room-open {
  background: var(--bg-main);
}

.hub-shell {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 72% 18%, rgba(124, 147, 160, 0.09), transparent 32%),
    linear-gradient(180deg, var(--bg-main) 0%, var(--bg-main-alt) 100%);
}

.hub-shell.is-hidden,
.room-shell {
  display: none;
}

.room-shell.is-active {
  display: block;
  min-height: 100vh;
  animation: room-page-unfold 560ms var(--ease-archive) both;
  transform-origin: top center;
}

.hub-orbit,
.room-orbit {
  position: absolute;
  z-index: -1;
  width: min(76vw, 920px);
  aspect-ratio: 1;
  border: 1px solid rgba(201, 210, 214, 0.1);
  border-radius: 50%;
  box-shadow: 0 0 55px rgba(124, 147, 160, 0.055);
  pointer-events: none;
}

.hub-orbit {
  top: -42vw;
  right: -14vw;
  animation: orbit-breathe 8s ease-in-out infinite alternate;
}

.hub-orbit::after,
.room-orbit::after {
  content: "";
  position: absolute;
  inset: 3%;
  border-top: 1px solid rgba(201, 210, 214, 0.12);
  border-radius: 50%;
}

.hub-hero {
  width: min(1180px, 92vw);
  min-height: 82vh;
  margin: 0 auto;
  padding: clamp(88px, 12vh, 150px) 0 72px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hub-eyebrow,
.room-eyebrow,
.portal-eyebrow {
  color: var(--text-secondary);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.hub-hero > * {
  opacity: 0;
  transform: translateY(12px);
  animation: hub-reveal 700ms var(--ease-archive) forwards;
}

.hub-hero > :nth-child(2) { animation-delay: 140ms; }
.hub-hero > :nth-child(3) { animation-delay: 280ms; }
.hub-hero > :nth-child(4) { animation-delay: 420ms; }
.hub-hero > :nth-child(5) { animation-delay: 560ms; }

.hub-hero h1 {
  max-width: 900px;
  margin-top: 28px;
  font-family: var(--font-display);
  font-size: clamp(58px, 9.5vw, 132px);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.hub-hero h1 em {
  font-weight: 500;
  color: var(--text-primary);
}

.hub-subtitle {
  margin-top: 28px;
  font-size: clamp(16px, 2vw, 24px);
  color: var(--text-secondary);
}

.hub-judgment {
  margin-top: clamp(48px, 8vh, 92px);
  padding-left: 22px;
  border-left: 1px solid var(--accent-gold);
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.55;
}

.hub-evidence {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 64px;
  border-top: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
}

.hub-evidence div {
  min-height: 112px;
  padding: 24px 28px;
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.hub-evidence div + div {
  border-left: 1px solid var(--border-line);
}

.hub-evidence strong {
  color: var(--accent-gold);
  font-size: clamp(24px, 3vw, 38px);
  white-space: nowrap;
}

.hub-evidence span {
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.5;
}

.portal-section {
  width: min(1380px, 94vw);
  margin: 0 auto;
  padding: 80px 0 120px;
}

.portal-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 32px;
  margin-bottom: 34px;
}

.portal-heading h2 {
  font-size: clamp(24px, 3vw, 40px);
  font-weight: 500;
}

.portal-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.portal-card {
  position: relative;
  min-height: 430px;
  padding: 26px 24px 22px;
  display: flex;
  flex-direction: column;
  color: var(--text-primary);
  border: 1px solid var(--border-line);
  background:
    radial-gradient(circle at 80% 18%, rgba(124, 147, 160, 0.07), transparent 34%),
    rgba(21, 19, 14, 0.7);
  overflow: hidden;
  transition: transform 600ms var(--ease-archive), border-color 600ms var(--ease-archive), background 600ms var(--ease-archive);
}

.portal-card::before {
  content: "";
  position: absolute;
  width: 260px;
  aspect-ratio: 1;
  right: -145px;
  top: 78px;
  border: 1px solid rgba(201, 210, 214, 0.09);
  border-radius: 50%;
  pointer-events: none;
}

.portal-card:hover,
.portal-card:focus-visible {
  z-index: 2;
  transform: scale(1.025);
  border-color: rgba(214, 154, 58, 0.72);
  outline: none;
}

.portal-card.is-visited {
  box-shadow: inset 0 0 0 1px rgba(214, 154, 58, 0.2);
}

.portal-card strong {
  margin-top: auto;
  font-family: var(--font-display);
  font-size: clamp(30px, 3vw, 48px);
  font-weight: 500;
  font-style: italic;
  line-height: 1.08;
}

.portal-subtitle {
  min-height: 70px;
  margin-top: 18px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.65;
}

.portal-preview {
  max-height: 0;
  opacity: 0;
  color: var(--text-primary);
  font-size: 12px;
  line-height: 1.6;
  overflow: hidden;
  transition: max-height 600ms var(--ease-archive), opacity 600ms var(--ease-archive), margin 600ms var(--ease-archive);
}

.portal-card:hover .portal-preview,
.portal-card:focus-visible .portal-preview {
  max-height: 70px;
  margin-top: 12px;
  opacity: 0.82;
}

.portal-palette,
.room-palette {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  width: max-content;
  padding: 6px 9px;
  border: 1px solid rgba(232, 225, 210, 0.11);
  border-radius: 999px;
}

.portal-palette {
  margin-top: 22px;
}

.portal-palette i,
.room-palette i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bg-module);
  transition: transform 400ms var(--ease-archive);
}

.portal-card:hover .portal-palette i:nth-child(2) { transform: translateY(-2px); }
.portal-card:hover .portal-palette i:nth-child(3) { transform: translateY(2px); }

.portal-index {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border-line);
  color: var(--accent-gold);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.portal-index,
.chart-tag,
.chart-index {
  display: none !important;
}

.portal-prologue .portal-palette i:nth-child(2), .room-prologue .room-palette i:nth-child(2) { background: var(--text-secondary); }
.portal-prologue .portal-palette i:nth-child(3), .room-prologue .room-palette i:nth-child(3) { background: var(--atmosphere-cool); }
.portal-prologue .portal-palette i:nth-child(4), .room-prologue .room-palette i:nth-child(4) { background: var(--text-primary); }
.portal-workflow .portal-palette i:nth-child(2), .room-workflow .room-palette i:nth-child(2) { background: var(--accent-teal); }
.portal-workflow .portal-palette i:nth-child(3), .room-workflow .room-palette i:nth-child(3) { background: var(--accent-gold); }
.portal-workflow .portal-palette i:nth-child(4), .room-workflow .room-palette i:nth-child(4) { background: var(--text-primary); }
.portal-imagination .portal-palette i:nth-child(2), .room-imagination .room-palette i:nth-child(2) { background: var(--accent-gold); }
.portal-imagination .portal-palette i:nth-child(3), .room-imagination .room-palette i:nth-child(3) { background: var(--accent-rust); }
.portal-imagination .portal-palette i:nth-child(4), .room-imagination .room-palette i:nth-child(4) { background: var(--text-primary); }
.portal-city .portal-palette i:nth-child(2), .room-city .room-palette i:nth-child(2) { background: var(--accent-teal); }
.portal-city .portal-palette i:nth-child(3), .room-city .room-palette i:nth-child(3) { background: var(--accent-gold); }
.portal-city .portal-palette i:nth-child(4), .room-city .room-palette i:nth-child(4) { background: var(--atmosphere-cool); }
.portal-epilogue .portal-palette i:nth-child(2), .room-epilogue .room-palette i:nth-child(2) { background: var(--accent-gold); }
.portal-epilogue .portal-palette i:nth-child(3), .room-epilogue .room-palette i:nth-child(3) { background: var(--text-primary); }
.portal-epilogue .portal-palette i:nth-child(4), .room-epilogue .room-palette i:nth-child(4) { background: var(--atmosphere-pale); }

.room-topbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 58px;
  padding: 0 max(4vw, 24px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(232, 225, 210, 0.08);
  background: var(--bg-main);
}

.room-topbar a,
.room-topbar span,
.room-footer a,
.room-footer span {
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.room-topbar a:hover,
.room-footer a:hover {
  color: var(--text-primary);
}

.room-header {
  position: relative;
  min-height: 54vh;
  padding: 96px max(6vw, 32px) 80px;
  display: flex;
  flex-direction: column;
  justify-content: end;
  overflow: hidden;
  isolation: isolate;
  border-bottom: 1px solid var(--border-line);
  background: radial-gradient(circle at 78% 30%, rgba(124, 147, 160, 0.07), transparent 30%);
}

.room-orbit {
  top: -48%;
  right: -12%;
}

.room-header h2 {
  max-width: 1050px;
  margin: 26px 0 34px;
  font-family: var(--font-display);
  font-size: clamp(44px, 7vw, 100px);
  font-weight: 500;
  font-style: italic;
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.room-palette {
  margin: 0;
}

.room-shell .archive-page {
  opacity: 0.45;
  transform: scale(0.96);
}

.room-shell .archive-page.is-active {
  opacity: 1;
  transform: scale(1);
}

.room-footer {
  width: min(1180px, 92vw);
  min-height: 180px;
  margin: 0 auto;
  padding: 64px 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  border-top: 1px solid var(--border-line);
}

.room-footer > :last-child {
  text-align: right;
}

.room-footer .is-disabled {
  opacity: 0.28;
}

.chart-supplement {
  margin-top: 88px;
}

.chart-block--embed {
  margin-block: 48px;
}

.chart-frame--embed-only {
  min-height: 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--border-line);
  background: #111613;
  background-image: none;
}

.chart-figure-embed {
  display: block;
  width: 100%;
  height: clamp(500px, 56vw, 650px);
  border: 0;
  background: #111613;
}

.chart-source-only {
  padding: 16px 2px 0;
  border: 0;
  background: transparent;
}

.chart-source-only .chart-source {
  margin: 0;
  color: var(--text-secondary);
}

@media (max-width: 720px) {
  .chart-block--embed {
    margin-block: 48px;
  }

  .chart-figure-embed {
    height: 540px;
  }
}

@keyframes hub-reveal {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes room-enter {
  from { opacity: 0; transform: translateY(12px) scale(0.992); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes room-page-unfold {
  from {
    opacity: 0;
    clip-path: inset(0 0 100% 0);
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    clip-path: inset(0 0 0 0);
    transform: translateY(0);
  }
}

@keyframes orbit-breathe {
  from { opacity: 0.68; }
  to { opacity: 1; }
}

@media (max-width: 980px) {
  .portal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .portal-card:last-child { grid-column: span 2; }
}

@media (max-width: 720px) {
  .hub-hero {
    min-height: auto;
    padding-top: 92px;
  }

  .hub-evidence {
    grid-template-columns: 1fr;
  }

  .hub-evidence div + div {
    border-left: 0;
    border-top: 1px solid var(--border-line);
  }

  .portal-heading {
    display: block;
  }

  .portal-heading h2 {
    margin-top: 12px;
  }

  .portal-grid {
    width: 100vw;
    margin-left: calc((94vw - 100vw) / 2);
    padding: 0 7.5vw 18px;
    display: flex;
    gap: 14px;
    overflow-x: auto;
    scroll-padding-inline: 7.5vw;
    scrollbar-width: thin;
  }

  .portal-card,
  .portal-card:last-child {
    flex: 0 0 85vw;
    min-height: 440px;
  }

  .room-header {
    min-height: 46vh;
    padding: 72px 24px 58px;
  }

  .room-footer {
    min-height: 150px;
    padding: 44px 0;
    grid-template-columns: 1fr 1fr;
  }

  .room-footer > :nth-child(2) {
    grid-column: 1 / -1;
    grid-row: 1;
    text-align: center;
  }

  .room-footer > :first-child { grid-column: 1; grid-row: 2; }
  .room-footer > :last-child { grid-column: 2; grid-row: 2; }

  .room-shell.is-active {
    animation-name: room-page-unfold;
  }
}

@keyframes room-enter-mobile {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .hub-hero > *,
  .hub-orbit,
  .room-shell.is-active {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .portal-card,
  .room-shell .archive-page {
    transition: none;
  }
}

/* —— 紧急可读性修订：正文全亮、非图表去框、图2校正 —— */
.room-shell .archive-page,
.room-shell .archive-page.is-active {
  opacity: 1 !important;
  transform: none !important;
}

.room-shell .narrative p,
.room-shell .narrative .lead,
.room-shell .chart-bridge,
.room-shell .interview-note,
.room-shell .interview-note p,
.room-shell .interview-note cite,
.room-shell .iface-line,
.room-shell .policy-msg,
.room-shell .device-header h2,
.room-shell .device-header p,
.room-shell .ending-epilogue {
  color: var(--text-primary) !important;
  opacity: 1 !important;
}

.room-shell .device-container,
.room-shell .interview-notes,
.room-shell .interview-note,
.room-shell .stat-embed,
.room-shell .workflow-lab,
.room-shell .lab-step,
.room-shell .lab-result,
.room-shell .city-orbit,
.room-shell .iface-list,
.room-shell .policy-panels,
.room-shell .policy-panel,
.room-shell .policy-afterword,
.room-shell .type-orbit,
.room-shell .type-item,
.room-shell .method-item {
  border: 0 !important;
  box-shadow: none !important;
  background: transparent !important;
}

.room-shell .chart-block,
.room-shell .chart-frame {
  opacity: 1 !important;
}

.interview-notes {
  width: min(720px, 92vw) !important;
  max-width: 720px !important;
  margin: 0 auto 80px !important;
  padding: 0 24px !important;
  display: grid !important;
  grid-template-columns: 1fr !important;
  gap: 64px !important;
}

.interview-note {
  width: 100% !important;
  max-width: none !important;
  margin: 0 !important;
  padding: 0 !important;
  transform: none !important;
  text-align: left !important;
}

.interview-note p {
  font-size: clamp(21px, 2.4vw, 30px) !important;
  line-height: 1.75 !important;
}

.room-shell .chart-container {
  width: 940px;
  max-width: 88vw;
  padding: 64px 0;
}

.room-shell .chart-block[data-chart-id="chart-C"] .chart-figure-embed {
  height: clamp(560px, 62vw, 690px);
}

.room-shell .chart-block[data-chart-id="chart-3"] .chart-figure-embed {
  height: clamp(540px, 58vw, 660px);
}

.room-shell .narrative {
  max-width: 720px;
}

.room-shell .narrative p {
  color: var(--text-primary) !important;
  font-size: clamp(17px, 1.45vw, 20px);
  line-height: 1.9;
}

.chart-block[data-chart-id="chart-2"] .chart-mount {
  min-height: 0 !important;
  height: auto !important;
  padding: 28px !important;
  display: block !important;
  overflow: visible !important;
}

.chart-block[data-chart-id="chart-2"] .chart-image {
  display: block !important;
  width: min(100%, 760px) !important;
  height: auto !important;
  max-height: none !important;
  margin: 0 auto !important;
  object-fit: contain !important;
}

/* 工作流实验：每个选项独立成框 */
.workflow-lab .lab-step {
  display: flex !important;
  flex-wrap: wrap !important;
  align-content: flex-start !important;
  gap: 14px !important;
  padding: 38px 28px 28px !important;
}

.workflow-lab .lab-step legend {
  padding: 0 10px !important;
  color: #fff !important;
}

.workflow-lab .lab-step button {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  min-height: 46px !important;
  margin: 0 !important;
  padding: 10px 18px !important;
  color: #fff !important;
  border: 1px solid rgba(255, 255, 255, 0.32) !important;
  background: rgba(255, 255, 255, 0.025) !important;
  line-height: 1.35 !important;
  white-space: nowrap !important;
}

.workflow-lab .lab-step button:hover,
.workflow-lab .lab-step button:focus-visible {
  border-color: var(--accent-gold) !important;
  color: var(--accent-gold) !important;
  outline: none !important;
}

.workflow-lab .lab-step button.is-selected {
  border-color: var(--accent-gold) !important;
  color: #fff !important;
  background: rgba(214, 154, 58, 0.18) !important;
}

/* Scroll-driven reading fade: triggered by page scroll, not hover. */
.room-shell .scroll-fade-target {
  opacity: 0.18 !important;
  transform: translateY(24px);
  filter: blur(1px);
  transition:
    opacity 620ms var(--ease-archive),
    transform 620ms var(--ease-archive),
    filter 620ms var(--ease-archive);
  will-change: opacity, transform, filter;
}

.room-shell .scroll-fade-target.is-scroll-visible {
  opacity: 1 !important;
  transform: translateY(0);
  filter: none;
}

.route-jump,
.route-jump * {
  scroll-behavior: auto !important;
}

@media (prefers-reduced-motion: reduce) {
  .room-shell .scroll-fade-target {
    opacity: 1 !important;
    transform: none;
    filter: none;
  }
}