:root {
  --bg-obsidian: #07090e;
  --bg-deep: #0d1117;
  --bg-surface: #151b24;
  --bg-elevated: #1c2430;
  --bg-glass: rgba(13, 17, 23, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.15);
  --border-teal: rgba(20, 184, 166, 0.4);
  --text-primary: #f3f6fa;
  --text-secondary: #9ba6b8;
  --text-muted: #647084;
  --accent-teal: #14b8a6;
  --accent-teal-bright: #2dd4bf;
  --accent-teal-dim: rgba(20, 184, 166, 0.14);
  --accent-indigo: #6366f1;
  --accent-indigo-bright: #818cf8;
  --accent-indigo-dim: rgba(99, 102, 241, 0.15);
  --accent-amber: #f59e0b;
  --accent-amber-dim: rgba(245, 158, 11, 0.15);
  --accent-rose: #f43f5e;
  --accent-rose-dim: rgba(244, 63, 94, 0.15);
  --accent-emerald: #10b981;
  --accent-emerald-dim: rgba(16, 185, 129, 0.15);
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", system-ui, sans-serif;
  --font-mono: "SF Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --max-w: 1200px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-obsidian);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
}

body {
  background-color: var(--bg-obsidian);
  background-image:
    radial-gradient(circle at 15% 10%, rgba(20, 184, 166, 0.10), transparent 38%),
    radial-gradient(circle at 85% 18%, rgba(99, 102, 241, 0.10), transparent 40%);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.18s ease, opacity 0.18s ease;
}

button, input, select {
  font-family: inherit;
  color: inherit;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(145deg, #0f2933, #07131d);
  border: 1.5px solid var(--border-teal);
  box-shadow: 0 0 20px rgba(20, 184, 166, 0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-text-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-name {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: #ffffff;
}

.brand-tag {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--accent-teal-dim);
  color: var(--accent-teal-bright);
  border: 1px solid rgba(20, 184, 166, 0.3);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-cta-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.btn-teal {
  background: var(--accent-teal);
  color: #032220;
  box-shadow: 0 8px 24px rgba(20, 184, 166, 0.25);
}

.btn-teal:hover {
  background: var(--accent-teal-bright);
  transform: translateY(-1px);
}

.btn-surface {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-surface:hover {
  background: var(--bg-elevated);
  border-color: var(--border-teal);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 13px;
  border-radius: 10px;
}

.btn-lg {
  padding: 15px 26px;
  font-size: 15.5px;
  border-radius: 14px;
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.pill-teal {
  background: var(--accent-teal-dim);
  color: var(--accent-teal-bright);
  border: 1px solid rgba(20, 184, 166, 0.35);
}

.pill-indigo {
  background: var(--accent-indigo-dim);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.35);
}

.pill-amber {
  background: var(--accent-amber-dim);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.35);
}

.pill-rose {
  background: var(--accent-rose-dim);
  color: #fb7185;
  border: 1px solid rgba(244, 63, 94, 0.35);
}

.hero-section {
  padding: 72px 0 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 56px;
  align-items: center;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 22px;
}

.hero-title {
  font-size: clamp(36px, 4.6vw, 56px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: #ffffff;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #2dd4bf 0%, #38bdf8 55%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 600px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding-top: 6px;
}

.hero-trust-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  width: 100%;
  font-size: 13.5px;
  color: var(--text-secondary);
}

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.hero-trust-item span.check {
  color: var(--accent-teal-bright);
  font-weight: 900;
}

.iphone-frame {
  width: 100%;
  max-width: 410px;
  margin: 0 auto;
  background: var(--bg-deep);
  border: 3px solid rgba(255, 255, 255, 0.16);
  border-radius: 42px;
  box-shadow:
    0 30px 70px rgba(0, 0, 0, 0.75),
    0 0 40px rgba(20, 184, 166, 0.12);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.iphone-statusbar {
  padding: 12px 24px 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
}

.iphone-header {
  padding: 8px 18px 12px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.iphone-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.iphone-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--bg-surface);
  padding: 3px;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  gap: 3px;
}

.iphone-tab-btn {
  padding: 7px 6px;
  border-radius: 7px;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
}

.iphone-tab-btn.active {
  background: var(--bg-elevated);
  color: var(--accent-teal-bright);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
}

.iphone-body {
  padding: 16px;
  min-height: 410px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mock-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 13px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-card.rose {
  border-color: rgba(244, 63, 94, 0.35);
  background: linear-gradient(180deg, rgba(244, 63, 94, 0.07) 0%, var(--bg-surface) 100%);
}

.mock-card.amber {
  border-color: rgba(245, 158, 11, 0.35);
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.06) 0%, var(--bg-surface) 100%);
}

.mock-card.teal {
  border-color: rgba(20, 184, 166, 0.35);
  background: linear-gradient(145deg, #0f172a, #042f2e);
}

.mock-progress {
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
}

.mock-progress-bar {
  height: 100%;
  border-radius: 999px;
}

.iphone-mini-player {
  background: #111827;
  border-top: 1px solid var(--border-strong);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.metrics-strip {
  padding: 28px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(21, 27, 36, 0.45);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.metric-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 16px;
  border-left: 2px solid var(--accent-teal);
}

.metric-value {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.metric-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-teal-bright);
}

.metric-sub {
  font-size: 12.5px;
  color: var(--text-secondary);
}

.section {
  padding: 84px 0;
}

.section-alt {
  background: rgba(13, 17, 23, 0.7);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-header-center {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.section-title-lg {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.section-subtitle {
  font-size: 16.5px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-teal);
}

.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--accent-teal-dim);
  border: 1px solid rgba(20, 184, 166, 0.35);
  color: var(--accent-teal-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.feature-card h3 {
  font-size: 19px;
  font-weight: 800;
  color: #ffffff;
}

.feature-card p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  font-size: 13px;
  color: var(--text-secondary);
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.feature-list li::before {
  content: "•";
  color: var(--accent-teal-bright);
  font-weight: 900;
}

.domain-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 32px;
}

.filter-chip {
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-chip:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.filter-chip.active {
  background: var(--accent-teal);
  color: #032220;
  border-color: var(--accent-teal);
}

.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(275px, 1fr));
  gap: 16px;
}

.module-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.15s ease;
}

.module-item:hover {
  border-color: var(--border-teal);
}

.module-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.module-num {
  font-size: 11.5px;
  font-weight: 800;
  color: var(--accent-teal-bright);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.module-badge-free {
  font-size: 10.5px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-emerald-dim);
  color: #34d399;
}

.module-badge-pro {
  font-size: 10.5px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

.module-title {
  font-size: 15px;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.35;
}

.module-topics {
  font-size: 12.5px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.demo-lab-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 28px;
  align-items: start;
}

.lab-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: 22px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.clinical-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
  background: var(--bg-deep);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.clinical-table th {
  background: rgba(99, 102, 241, 0.16);
  color: #c7d2fe;
  text-align: left;
  padding: 9px 12px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.clinical-table td {
  padding: 9px 12px;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.quiz-option {
  width: 100%;
  text-align: left;
  background: var(--bg-deep);
  border: 1.5px solid var(--border-subtle);
  border-radius: 14px;
  padding: 13px 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.quiz-option:hover {
  border-color: var(--border-teal);
}

.quiz-option.correct {
  border-color: var(--accent-emerald);
  background: var(--accent-emerald-dim);
}

.quiz-option.wrong {
  border-color: var(--accent-rose);
  background: var(--accent-rose-dim);
}

.quiz-letter {
  width: 26px;
  height: 26px;
  border-radius: 999px;
  background: var(--bg-elevated);
  font-size: 12px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.quiz-option.correct .quiz-letter {
  background: var(--accent-emerald);
  color: #042f2e;
}

.quiz-option.wrong .quiz-letter {
  background: var(--accent-rose);
  color: #ffffff;
}

.rationale-drawer {
  display: none;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.35);
  border-radius: 14px;
  padding: 16px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-primary);
}

.rationale-drawer.open {
  display: block;
}

.calc-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.calc-field label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.calc-input {
  background: var(--bg-deep);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
}

.calc-result-box {
  background: linear-gradient(145deg, #0f172a, #042f2e);
  border: 1px solid var(--border-teal);
  border-radius: 14px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch;
}

.price-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 22px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
}

.price-card.featured {
  border: 2px solid var(--accent-teal);
  background: linear-gradient(180deg, rgba(20, 184, 166, 0.09) 0%, var(--bg-surface) 100%);
  box-shadow: 0 20px 50px rgba(20, 184, 166, 0.14);
}

.price-tier-name {
  font-size: 17px;
  font-weight: 800;
  color: #ffffff;
}

.price-amount {
  font-size: 34px;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.price-amount span {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.price-sub {
  font-size: 13px;
  color: var(--accent-teal-bright);
  font-weight: 700;
}

.price-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-secondary);
  margin: 8px 0 auto;
}

.price-features li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.price-features li strong {
  color: var(--text-primary);
}

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.roadmap-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 18px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.roadmap-card.live {
  border-color: var(--accent-teal);
  background: linear-gradient(145deg, rgba(20, 184, 166, 0.12), var(--bg-surface));
}

.roadmap-waitlist-btn {
  margin-top: auto;
  padding-top: 10px;
  font-size: 12px;
  font-weight: 800;
  color: var(--accent-teal-bright);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: opacity 0.15s ease;
}

.roadmap-waitlist-btn:hover {
  opacity: 0.85;
  text-decoration: underline;
}

.audio-preview-card {
  margin-top: 28px;
  background: linear-gradient(145deg, #0d131f 0%, #07191e 100%);
  border: 1.5px solid var(--border-teal);
  border-radius: 22px;
  padding: 28px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
  align-items: center;
}

.audio-track-btn {
  width: 100%;
  text-align: left;
  background: rgba(7, 9, 14, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.audio-track-btn:hover {
  border-color: var(--border-teal);
}

.audio-track-btn.active {
  border-color: var(--accent-teal);
  background: rgba(20, 184, 166, 0.14);
}

.audio-console {
  background: rgba(7, 9, 14, 0.85);
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.audio-script-box {
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid var(--accent-teal);
  border-radius: 8px;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.65;
  color: #f3f6fa;
}

.audio-controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.speed-pill {
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 800;
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
}

.speed-pill.active {
  background: var(--accent-teal-dim);
  color: var(--accent-teal-bright);
  border-color: var(--accent-teal);
}

.residency-banner {
  margin-top: 32px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(20, 184, 166, 0.10) 100%);
  border: 1px solid rgba(129, 140, 248, 0.35);
  border-radius: 22px;
  padding: 28px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.doc-hero {
  padding: 56px 0 36px;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(13, 17, 23, 0.6);
}

.doc-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 24px 84px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.doc-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 18px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.doc-card h2 {
  font-size: 21px;
  font-weight: 800;
  color: #ffffff;
}

.doc-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent-teal-bright);
  margin-top: 6px;
}

.doc-card p,
.doc-card li {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.doc-card ul {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 18px 22px;
  text-align: left;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
}

.faq-answer {
  display: none;
  padding: 0 22px 18px;
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
}

.faq-item.open .faq-answer {
  display: block;
}

.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: #05070b;
  padding: 64px 0 48px;
  font-size: 13.5px;
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #ffffff;
  margin-bottom: 4px;
}

.footer-col a:hover {
  color: var(--accent-teal-bright);
}

.footer-disclaimer {
  padding-top: 28px;
  border-top: 1px solid var(--border-subtle);
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

@media (max-width: 1024px) {
  .hero-grid,
  .demo-lab-grid,
  .audio-preview-card {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .roadmap-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .nav-links {
    display: none;
  }
  .pricing-grid,
  .roadmap-grid,
  .features-grid,
  .metrics-grid,
  .footer-grid,
  .hero-trust-list {
    grid-template-columns: 1fr;
  }
  .hero-section {
    padding: 40px 0;
  }
}