:root {
  --bg: #e2e8f0;
  --bg-surface: #e2e8f0;
  --bg-card: #e2e8f0;
  --bg-card-hover: #e2e8f0;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-accent: #334155;
  --accent-blue: #3b82f6;
  --accent-indigo: #6366f1;
  --accent-red: #ef4444;
  --accent-emerald: #10b981;
  --border-radius-xl: 28px;
  --border-radius: 20px;
  --border-radius-md: 14px;
  --border-radius-sm: 10px;
  --shadow-flat: 8px 8px 18px #cbd5e1, -8px -8px 18px #ffffff;
  --shadow-deep: 14px 14px 28px #cbd5e1, -14px -14px 28px #ffffff;
  --shadow-hover: 12px 12px 24px #cbd5e1, -12px -12px 24px #ffffff;
  --shadow-sm: 4px 4px 10px #cbd5e1, -4px -4px 10px #ffffff;
  --shadow-inset: inset 4px 4px 8px #cbd5e1, inset -4px -4px 8px #ffffff;
  --shadow-inset-sm: inset 2px 2px 5px #cbd5e1, inset -2px -2px 5px #ffffff;
  --shadow-inset-deep: inset 6px 6px 12px #cbd5e1, inset -6px -6px 12px #ffffff;
  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

.ambient-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
  will-change: transform;
}

.orb-1 {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(147, 197, 253, 0.6) 0%, rgba(226, 232, 240, 0) 70%);
  top: -120px;
  left: -100px;
  animation: floatOrb1 22s ease-in-out infinite alternate;
}

.orb-2 {
  width: 540px;
  height: 540px;
  background: radial-gradient(circle, rgba(196, 181, 253, 0.5) 0%, rgba(226, 232, 240, 0) 70%);
  bottom: 5%;
  right: -120px;
  animation: floatOrb2 26s ease-in-out infinite alternate;
}

.orb-3 {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(254, 205, 211, 0.4) 0%, rgba(226, 232, 240, 0) 70%);
  top: 45%;
  left: 40%;
  animation: floatOrb3 20s ease-in-out infinite alternate;
}

@keyframes floatOrb1 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(90px, 70px, 0) scale(1.1); }
}

@keyframes floatOrb2 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(-80px, -90px, 0) scale(1.08); }
}

@keyframes floatOrb3 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(-60px, 50px, 0) scale(0.92); }
}

.svg-icon {
  width: 1.1rem;
  height: 1.1rem;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  display: inline-block;
  vertical-align: -0.15em;
  flex-shrink: 0;
}

.svg-icon-lg {
  width: 1.6rem;
  height: 1.6rem;
  stroke-width: 1.8;
}

.svg-icon-xl {
  width: 2.2rem;
  height: 2.2rem;
  stroke-width: 1.7;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 1rem;
  z-index: 100;
  margin-bottom: 2.5rem;
}

.header-card {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-flat);
  padding: 0.9rem 1.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  backdrop-filter: blur(8px);
  transition: var(--transition-smooth);
}

.author-badge {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.author-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
  position: relative;
}

.author-avatar::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-emerald);
  border: 2px solid var(--bg);
}

.author-meta-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.author-meta-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.nav-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  background: var(--bg-card);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
}

.nav-link-btn:hover {
  color: var(--text-main);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.nav-link-btn:active,
.nav-link-btn.active {
  box-shadow: var(--shadow-inset-sm);
  color: var(--accent-blue);
  transform: translateY(0);
}

.sound-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  transition: var(--transition-smooth);
}

.sound-toggle-btn:hover {
  color: var(--text-main);
}

.sound-toggle-btn.muted {
  box-shadow: var(--shadow-inset-sm);
  color: var(--accent-red);
}

.hero-section {
  padding: 1.5rem 0 3.5rem 0;
}

.hero-main-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-deep);
  padding: 3.5rem 3rem;
  position: relative;
  overflow: hidden;
  perspective: 1000px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1rem;
  border-radius: 9999px;
  background: var(--bg-card);
  box-shadow: var(--shadow-inset-sm);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
  margin-bottom: 1.6rem;
}

.hero-title {
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-main);
  margin-bottom: 1.4rem;
}

.hero-title .title-accent {
  background: linear-gradient(135deg, #1e293b 0%, #3b82f6 50%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: 1.18rem;
  color: var(--text-muted);
  max-width: 820px;
  line-height: 1.7;
  margin-bottom: 2.2rem;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.stat-neu-pill {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem 1.4rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition-smooth);
}

.stat-neu-pill:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.stat-neu-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-sm);
  background: var(--bg-card);
  box-shadow: var(--shadow-inset-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
}

.stat-value {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.hero-actions-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.2rem;
}

.btn-neu-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  background: var(--bg-card);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition-smooth);
}

.btn-neu-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  color: var(--accent-blue);
}

.btn-neu-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-inset);
}

.btn-neu-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.95rem 1.8rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-card);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition-smooth);
}

.btn-neu-secondary:hover {
  color: var(--text-main);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-neu-secondary:active {
  box-shadow: var(--shadow-inset-sm);
  transform: translateY(0);
}

.section-head-wrap {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3rem auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  background: var(--bg-card);
  box-shadow: var(--shadow-inset-sm);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-blue);
  margin-bottom: 0.8rem;
}

.section-heading {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 0.8rem;
}

.section-subtext {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.neu-section {
  padding: 3rem 0;
}

.sheets-nav-container {
  display: flex;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.sheets-segmented-control {
  background: var(--bg-card);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-inset);
  padding: 0.5rem;
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  max-width: 100%;
}

.sheet-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.8rem 1.4rem;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.sheet-tab-btn:hover {
  color: var(--text-main);
}

.sheet-tab-btn.active {
  background: var(--bg-card);
  color: var(--accent-blue);
  box-shadow: var(--shadow-sm);
}

.sheet-content-panel {
  display: none;
  animation: fadeInPanel 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.sheet-content-panel.active {
  display: block;
}

@keyframes fadeInPanel {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.neu-card {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-flat);
  padding: 2.2rem;
  position: relative;
  transition: var(--transition-smooth);
  will-change: transform;
}

.neu-card-inset {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-inset);
  padding: 2rem;
  position: relative;
}

.neu-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.neu-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.8rem;
}

.neu-grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.2rem;
}

.card-icon-box {
  width: 42px;
  height: 42px;
  border-radius: var(--border-radius-sm);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
  flex-shrink: 0;
}

.card-heading {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.card-text {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.checklist-neu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  font-size: 0.95rem;
  color: var(--text-main);
  line-height: 1.5;
}

.check-pill {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-card);
  box-shadow: var(--shadow-inset-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-emerald);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.timeline-track {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
  position: relative;
  padding-left: 1rem;
}

.timeline-track::before {
  content: '';
  position: absolute;
  top: 1.2rem;
  bottom: 1.2rem;
  left: 27px;
  width: 3px;
  background: #cbd5e1;
  border-radius: 2px;
}

.timeline-step {
  display: flex;
  align-items: flex-start;
  gap: 1.4rem;
  position: relative;
}

.timeline-marker {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-blue);
  flex-shrink: 0;
  z-index: 2;
}

.timeline-step.completed .timeline-marker {
  box-shadow: var(--shadow-inset-sm);
  color: var(--accent-emerald);
}

.timeline-step-content {
  flex: 1;
  background: var(--bg-card);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  padding: 1.2rem 1.4rem;
}

.timeline-period {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
  margin-bottom: 0.3rem;
}

.timeline-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.3rem;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.passport-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0 0.8rem;
}

.passport-row {
  transition: var(--transition-smooth);
}

.passport-key-cell {
  background: var(--bg-card);
  border-top-left-radius: var(--border-radius-sm);
  border-bottom-left-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-inset-sm);
  padding: 1.1rem 1.4rem;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-main);
  width: 34%;
  vertical-align: top;
}

.passport-val-cell {
  background: var(--bg-card);
  border-top-right-radius: var(--border-radius-sm);
  border-bottom-right-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-sm);
  padding: 1.1rem 1.4rem;
  font-size: 0.94rem;
  color: var(--text-muted);
  vertical-align: top;
  line-height: 1.6;
}

.interactive-body-wrapper {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 900px) {
  .interactive-body-wrapper {
    grid-template-columns: 1fr;
  }
}

.organs-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.organ-select-btn {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.4rem;
  border-radius: var(--border-radius-md);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  border: none;
  cursor: pointer;
  text-align: left;
  transition: var(--transition-smooth);
  width: 100%;
}

.organ-select-btn:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-hover);
}

.organ-select-btn.active {
  box-shadow: var(--shadow-inset);
  transform: translateX(0);
}

.organ-btn-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-sm);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
  flex-shrink: 0;
  transition: var(--transition-smooth);
}

.organ-select-btn.active .organ-btn-icon {
  box-shadow: var(--shadow-inset-sm);
  color: var(--accent-red);
}

.organ-btn-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  display: block;
}

.organ-btn-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.organ-detail-viewer {
  background: var(--bg-card);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-deep);
  padding: 2.5rem;
  min-height: 440px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.organ-header-badge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.organ-danger-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  border-radius: 9999px;
  background: var(--bg-card);
  box-shadow: var(--shadow-inset-sm);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-red);
}

.organ-name-display {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.8rem;
}

.organ-desc-display {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.organ-consequences-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.2rem;
  margin-bottom: 2rem;
}

.consequence-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-inset-sm);
  padding: 1.2rem;
}

.consequence-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.3rem;
}

.consequence-detail {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.myths-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.myth-card-3d {
  height: 300px;
  perspective: 1000px;
  cursor: pointer;
}

.myth-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: left;
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
  transform-style: preserve-3d;
}

.myth-card-3d.flipped .myth-card-inner {
  transform: rotateY(180deg);
}

.myth-card-front,
.myth-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border-radius: var(--border-radius);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.myth-card-front {
  background: var(--bg-card);
  box-shadow: var(--shadow-flat);
}

.myth-card-front:hover {
  box-shadow: var(--shadow-hover);
}

.myth-card-back {
  background: var(--bg-card);
  box-shadow: var(--shadow-inset);
  transform: rotateY(180deg);
}

.myth-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background: var(--bg-card);
  box-shadow: var(--shadow-inset-sm);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-red);
  width: fit-content;
}

.reality-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-emerald);
  width: fit-content;
}

.myth-quote {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.4;
}

.reality-text {
  font-size: 0.96rem;
  color: var(--text-main);
  line-height: 1.6;
}

.myth-action-hint {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--accent-blue);
  font-weight: 600;
}

.sim-container {
  background: var(--bg-card);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-deep);
  padding: 3rem;
  max-width: 860px;
  margin: 0 auto;
}

.sim-scenario-box {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-inset);
  padding: 2rem;
  margin-bottom: 2.2rem;
}

.sim-speaker-tag {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-red);
  margin-bottom: 0.6rem;
}

.sim-dialogue-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.5;
}

.sim-choices-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.sim-choice-btn {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.1rem 1.6rem;
  border-radius: var(--border-radius-md);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  border: none;
  cursor: pointer;
  text-align: left;
  transition: var(--transition-smooth);
}

.sim-choice-btn:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.sim-choice-btn:active {
  box-shadow: var(--shadow-inset-sm);
  transform: translateY(0);
}

.choice-marker {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-card);
  box-shadow: var(--shadow-inset-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.88rem;
  color: var(--accent-blue);
  flex-shrink: 0;
}

.choice-label-text {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
}

.sim-feedback-box {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-flat);
  padding: 1.8rem;
  display: none;
  animation: fadeInPanel 0.4s ease;
}

.sim-feedback-box.show {
  display: block;
}

.sim-score-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(203, 213, 225, 0.6);
}

.booklet-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.8rem;
  margin-bottom: 3rem;
}

@media (max-width: 900px) {
  .booklet-container {
    grid-template-columns: 1fr;
  }
}

.booklet-column {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-flat);
  padding: 2.2rem 1.8rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 440px;
  position: relative;
  transition: var(--transition-smooth);
}

.booklet-column:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.booklet-fold-index {
  position: absolute;
  top: 1.2rem;
  right: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-blue);
}

.booklet-top-head {
  margin-bottom: 1.5rem;
}

.booklet-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.booklet-sub {
  font-size: 0.86rem;
  color: var(--text-muted);
}

.booklet-body-content {
  flex: 1;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.hotlines-card {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-inset);
  padding: 2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.hotline-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hotline-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-emerald);
}

.hotline-number {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-main);
  text-decoration: none;
  display: block;
}

.hotline-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.site-footer {
  padding: 4rem 0 3rem 0;
  margin-top: 4rem;
  position: relative;
  z-index: 1;
}

.footer-neu-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-flat);
  padding: 2.8rem 2.4rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.footer-top-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.footer-author-info {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
}

.footer-author-sub {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-print-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--border-radius-sm);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  border: none;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-main);
  transition: var(--transition-smooth);
}

.footer-print-btn:hover {
  box-shadow: var(--shadow-hover);
  color: var(--accent-blue);
  transform: translateY(-2px);
}

.footer-bottom-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(203, 213, 225, 0.7);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.print-report-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(226, 232, 240, 0.85);
  backdrop-filter: blur(14px);
  z-index: 1000;
  padding: 2rem 1rem;
  overflow-y: auto;
}

.print-report-modal.open {
  display: block;
}

.print-a4-sheet {
  background: #ffffff;
  color: #0f172a;
  max-width: 820px;
  margin: 0 auto;
  padding: 4rem 3.5rem;
  border-radius: 8px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  position: relative;
  font-size: 14px;
  line-height: 1.6;
}

.print-modal-toolbar {
  max-width: 820px;
  margin: 0 auto 1.5rem auto;
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .ambient-bg,
  .site-header,
  .hero-section,
  .neu-section,
  .site-footer,
  .print-modal-toolbar {
    display: none !important;
  }
  .print-report-modal {
    display: block !important;
    position: static !important;
    padding: 0 !important;
    background: transparent !important;
    backdrop-filter: none !important;
  }
  .print-a4-sheet {
    box-shadow: none !important;
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
  }
}

@media (max-width: 768px) {
  .hero-main-card {
    padding: 2.2rem 1.6rem;
  }
  .header-card {
    flex-direction: column;
    align-items: stretch;
  }
  .header-nav {
    justify-content: center;
    flex-wrap: wrap;
  }
}