/* ── LongevityGraph Marketing Site ── */
/* Design: Warm Sand + Deep Teal, Instrument Serif + DM Sans */

:root {
  --color-bg: #F9F8F6;
  --color-accent: #008080;
  --color-accent-light: #E6F3F3;
  --color-accent-dark: #006666;
  --color-text: #1A1A1A;
  --color-text-secondary: #6B7280;
  --color-text-tertiary: #9CA3AF;
  --color-border: #E5E7EB;
  --color-card: #FFFFFF;
  --color-success: #059669;
  --color-warning: #D97706;
  --color-error: #DC2626;
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
  --text-hero: clamp(38px, 5vw, 68px);
  --text-h1: clamp(36px, 4vw, 56px);
  --text-h2: clamp(28px, 3vw, 48px);
  --text-h3: clamp(22px, 2.5vw, 28px);
  --text-body-lg: 18px;
  --text-body: 16px;
  --text-body-sm: 14px;
  --text-caption: 12px;
  --section-gap: clamp(80px, 10vw, 140px);
  --content-max: 1200px;
  --content-narrow: 800px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.08);
  --radius: 12px;
  --radius-sm: 8px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img { max-width: 100%; height: auto; }

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.02em;
}
.serif { font-family: var(--font-display); }
.mono { font-family: var(--font-mono); }

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background 0.3s, backdrop-filter 0.3s;
}

.nav.scrolled {
  background: rgba(249, 248, 246, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
  font-size: 18px;
}

.nav-logo img { height: 28px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

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

.btn-login {
  color: var(--color-text) !important;
  font-weight: 500 !important;
}

.btn-cta-nav {
  background: var(--color-accent);
  color: #fff !important;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600 !important;
  transition: opacity 0.2s;
}

.btn-cta-nav:hover { opacity: 0.9; }

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--color-text);
}

/* Mobile menu overlay */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--color-bg);
  z-index: 99;
  padding: 80px 24px 24px;
  flex-direction: column;
  gap: 8px;
  box-shadow: -4px 0 20px rgba(0,0,0,0.1);
  transition: right 0.3s ease;
}

.mobile-menu.open {
  right: 0;
}

.mobile-menu a {
  display: block;
  padding: 12px 0;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  border-bottom: 1px solid var(--color-border);
}

/* ── Sections ── */
.section {
  padding: var(--section-gap) 0;
}

.section-white {
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
}

.section-dark {
  background: var(--color-text);
  color: #F9F8F6;
}

.section-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.section-eyebrow::before {
  content: '';
  width: 32px;
  height: 2px;
  background: var(--color-accent);
}

.section-eyebrow span {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  font-weight: 600;
}

.section h2 {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 20px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  margin-bottom: 48px;
}

.section-header p {
  max-width: 480px;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: clamp(80px, 10vw, 120px);
  padding-bottom: clamp(80px, 10vw, 120px);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 4vw, 64px);
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: #e0f2f2;
  border: 1px solid #b2dfdf;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

.hero-badge .pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--color-text);
  text-wrap: balance;
}

.hero h1 em {
  font-style: normal;
  color: var(--color-accent);
}

.hero-sub {
  margin-top: 24px;
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.1s;
}

.btn-primary:hover { opacity: 0.9; }
.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 500;
  font-family: var(--font-body);
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.2s;
}

.btn-secondary:hover { opacity: 0.8; }

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 16px;
  margin-top: 40px;
}

.hero-stats .stat {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.hero-stats .stat-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  color: var(--color-text);
}

.hero-stats .stat-label {
  font-size: 12px;
  color: var(--color-text-tertiary);
}

.hero-stats .stat-sep {
  color: var(--color-border);
  font-size: 12px;
}

/* Hero right — dashboard mockup */
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

/* ── Bio Age Gauge ── */
.bio-gauge {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.bio-gauge canvas {
  width: 220px;
  height: 220px;
}

.bio-gauge-labels {
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 0 8px;
  margin-top: -8px;
}

.bio-gauge-labels span {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-tertiary);
}

.bio-gauge-center {
  position: absolute;
  top: 72px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.bio-gauge-center .label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-tertiary);
}

.bio-gauge-center .value {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 64px);
  line-height: 1;
  color: var(--color-accent);
}

.bio-gauge-center .vs {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
}

.bio-gauge-center .vs span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-secondary);
}

.bio-gauge-center .vs .chrono {
  text-decoration: line-through;
  color: var(--color-text-tertiary);
  font-weight: 600;
}

.bio-gauge-center .delta {
  margin-top: 8px;
  padding: 2px 10px;
  border-radius: 999px;
  background: #e0f2f2;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
}

/* ── Dashboard Mockup ── */
.dashboard-mockup {
  width: 100%;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  box-shadow: 0 8px 40px rgba(0,0,0,0.10);
}

.mockup-chrome {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.mockup-dots {
  display: flex;
  gap: 6px;
}

.mockup-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.mockup-dots span:nth-child(1) { background: rgba(220,38,38,0.6); }
.mockup-dots span:nth-child(2) { background: rgba(217,119,6,0.6); }
.mockup-dots span:nth-child(3) { background: rgba(5,150,105,0.6); }

.mockup-url {
  flex: 1;
  margin-left: 12px;
  padding: 4px 8px;
  border-radius: 4px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-tertiary);
}

.mockup-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mockup-header .greeting {
  font-weight: 600;
  font-size: 14px;
}

.mockup-header .sub {
  font-size: 11px;
  color: var(--color-text-secondary);
}

.mockup-header .age-badge {
  padding: 4px 10px;
  border-radius: 999px;
  background: #e0f2f2;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
}

.mockup-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.mockup-stat {
  padding: 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.mockup-stat .label {
  font-size: 10px;
  font-weight: 500;
  color: var(--color-text-tertiary);
}

.mockup-stat .value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 16px;
  margin-top: 2px;
}

.mockup-stat .delta {
  font-family: var(--font-mono);
  font-size: 10px;
  margin-top: 2px;
}

.mockup-stat .delta.good { color: var(--color-success); }
.mockup-stat .delta.warn { color: var(--color-warning); }

.mockup-chart {
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.mockup-chart .chart-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.mockup-alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px;
  border-radius: var(--radius);
  background: #FFF9F0;
  border: 1px solid #FDE68A;
}

.mockup-alert .alert-icon {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-warning);
  color: #fff;
  font-size: 9px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.mockup-alert .alert-title {
  font-size: 11px;
  font-weight: 600;
  color: #92400E;
}

.mockup-alert .alert-text {
  font-size: 10px;
  color: #B45309;
}

/* ── Problem Section ── */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.problem-card {
  padding: 28px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.problem-card .stat {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.problem-card .stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-tertiary);
  margin-bottom: 12px;
}

.problem-card p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.problem-callout {
  text-align: center;
  padding: 20px 28px;
  background: #e0f2f2;
  border: 1px solid #b2dfdf;
  border-radius: var(--radius);
  color: var(--color-accent-dark);
  font-size: 14px;
  line-height: 1.6;
}

.problem-callout strong {
  font-weight: 700;
}

/* ── Data Layers ── */
.layers-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.layer-card {
  padding: 24px 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}

.layer-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}

.layer-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.layer-card:hover::before {
  transform: scaleX(1);
}

.layer-card.teal::before { background: var(--color-accent); }
.layer-card.green::before { background: var(--color-success); }
.layer-card.indigo::before { background: #6366f1; }
.layer-card.amber::before { background: var(--color-warning); }
.layer-card.red::before { background: var(--color-error); }

.layer-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.layer-icon.teal { background: rgba(0,128,128,0.14); color: var(--color-accent); }
.layer-icon.green { background: rgba(5,150,105,0.14); color: var(--color-success); }
.layer-icon.indigo { background: rgba(99,102,241,0.14); color: #6366f1; }
.layer-icon.amber { background: rgba(217,119,6,0.14); color: var(--color-warning); }
.layer-icon.red { background: rgba(220,38,38,0.14); color: var(--color-error); }

.layer-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}

.layer-card p {
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.layer-stat {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

.layer-stat .value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
}

.layer-stat .label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-tertiary);
}

/* ── AI Section ── */
.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}

.ai-capabilities {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 28px;
}

.ai-cap {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.ai-cap .check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #e0f2f2;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
}

.ai-tools-stat {
  margin-top: 20px;
  padding: 12px 16px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.ai-tools-stat .value {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-accent);
}

.ai-tools-stat .label {
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* Chat Mockup */
.chat-mockup {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.chat-header {
  padding: 16px 20px;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.chat-header-info .title {
  font-weight: 600;
  font-size: 14px;
}

.chat-header-info .meta {
  font-size: 11px;
  opacity: 0.8;
  display: flex;
  align-items: center;
  gap: 6px;
}

.chat-header-info .meta .online-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4ade80;
  animation: pulse 2s ease-in-out infinite;
}

.chat-messages {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 380px;
  overflow-y: auto;
}

.chat-msg {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 13px;
  line-height: 1.5;
}

.chat-msg.user {
  align-self: flex-end;
  background: var(--color-accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.chat-msg.ai {
  align-self: flex-start;
  background: #F3F4F6;
  color: var(--color-text);
  border-bottom-left-radius: 4px;
}

.chat-tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 4px;
  background: #e0f2f2;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  margin-bottom: 6px;
}

.chat-input {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.chat-input-field {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-card);
  font-size: 13px;
  font-family: var(--font-body);
  color: var(--color-text-tertiary);
}

.chat-send-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent);
  border: none;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* ── Evaluate Preview ── */
.eval-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}

.eval-demo-input {
  display: flex;
  gap: 8px;
  margin-top: 24px;
}

.eval-demo-input input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font-body);
  background: var(--color-card);
  color: var(--color-text);
}

.eval-card {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.eval-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
  border-bottom: 1px solid var(--color-border);
}

.eval-grade {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: #e0f2f2;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 24px;
  color: var(--color-accent);
}

.eval-scores {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 20px;
}

.eval-score {
  padding: 12px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
}

.eval-score .label {
  font-size: 10px;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.eval-score .value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  margin-top: 4px;
}

.eval-score .bar {
  height: 4px;
  border-radius: 2px;
  background: var(--color-border);
  margin-top: 6px;
  overflow: hidden;
}

.eval-score .bar-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--color-accent);
}

.eval-verdict {
  margin: 0 20px 20px;
  padding: 12px 16px;
  background: #FFF9F0;
  border: 1px solid #FDE68A;
  border-radius: var(--radius-sm);
}

.eval-verdict .title {
  font-size: 12px;
  font-weight: 600;
  color: #92400E;
}

.eval-verdict .text {
  font-size: 11px;
  color: #B45309;
  margin-top: 2px;
}

.eval-actions {
  display: flex;
  gap: 8px;
  padding: 0 20px 20px;
}

/* ── Free Tools ── */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.tool-card {
  padding: 24px 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}

.tool-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.tool-card .tool-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #e0f2f2;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
}

.tool-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: #F3F4F6;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--color-accent);
}

.tool-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
}

.tool-card p {
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.tool-card .tool-cta {
  margin-top: 12px;
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 600;
  opacity: 0;
  transition: opacity 0.2s;
  display: flex;
  align-items: center;
  gap: 4px;
}

.tool-card:hover .tool-cta { opacity: 1; }

/* ── Serious Optimizers (Dark) ── */
.optimizers-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.optimizer-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  border: 1px solid #2D3039;
  font-size: 13px;
  color: #D1D5DB;
}

.optimizer-check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(0,128,128,0.2);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
}

.optimizers-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.opt-stat {
  padding: 24px;
  background: #252830;
  border-radius: var(--radius);
  text-align: center;
}

.opt-stat .value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 24px;
  color: var(--color-accent);
}

.opt-stat .label {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

/* ── Community Data ── */
.community-table {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-card);
}

.community-row {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr 0.5fr 1fr;
  gap: 12px;
  padding: 12px 20px;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  font-size: 13px;
}

.community-row:last-child { border-bottom: none; }

.community-row.header {
  background: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-tertiary);
  font-weight: 600;
}

.community-row:not(.header):hover {
  background: #FAFAFA;
}

.community-name {
  display: flex;
  align-items: center;
  gap: 8px;
}

.community-name .rank {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-tertiary);
  width: 20px;
}

.community-name .name {
  font-weight: 600;
}

.prevalence-bar {
  display: flex;
  align-items: center;
  gap: 8px;
}

.prevalence-bar .bar {
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: var(--color-border);
  overflow: hidden;
}

.prevalence-bar .bar-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--color-accent);
  opacity: 0.7;
}

.prevalence-bar .pct {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-secondary);
  min-width: 32px;
  text-align: right;
}

.grade-badge {
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-align: center;
}

.grade-a { background: #e0f2f2; color: var(--color-accent); }
.grade-b { background: #e0f2f2; color: var(--color-accent); }
.grade-c { background: #FFF9F0; color: var(--color-warning); }

.community-blur {
  position: relative;
}

.community-blur .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent, var(--color-card));
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Social Proof / Case Study ── */
.case-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 24px;
  align-items: stretch;
}

.case-card {
  padding: 32px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.case-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #e0f2f2;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}

.case-ages {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
}

.case-ages .before {
  font-family: var(--font-mono);
  font-size: 48px;
  font-weight: 700;
  color: var(--color-error);
}

.case-ages .after {
  font-family: var(--font-mono);
  font-size: 48px;
  font-weight: 700;
  color: var(--color-success);
}

.case-ages .arrow {
  color: var(--color-text-tertiary);
}

.case-achievement {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: #e0f2f2;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}

.case-story h3 {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  line-height: 1.3;
  margin-bottom: 24px;
}

.case-step {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.case-step:last-child { border-bottom: none; }

.case-step .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-tertiary);
  font-weight: 600;
  min-width: 24px;
}

.case-step .icon {
  font-size: 20px;
  min-width: 28px;
}

.case-step .text {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.case-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}

.case-link:hover { text-decoration: underline; }

/* ── Pricing Preview ── */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.pricing-card {
  padding: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  position: relative;
}

.pricing-card.free {
  background: var(--color-bg);
}

.pricing-card.pro {
  background: var(--color-card);
  border-color: var(--color-accent);
  border-width: 2px;
  box-shadow: 0 4px 20px rgba(0,128,128,0.12);
}

.pricing-card.pro::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-accent);
  border-radius: var(--radius) var(--radius) 0 0;
}

.pricing-popular {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
}

.pricing-card .plan-name {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-tertiary);
  margin-bottom: 8px;
}

.pricing-card .price {
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 700;
}

.pricing-card .price span {
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text-secondary);
}

.pricing-features {
  list-style: none;
  margin: 24px 0;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 0;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.pricing-features .check {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-text-tertiary);
}

.pricing-card.pro .pricing-features .check {
  color: var(--color-accent);
}

.pricing-card .price-btn {
  display: block;
  width: 100%;
  padding: 12px;
  border-radius: var(--radius-sm);
  text-align: center;
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  transition: opacity 0.2s;
  font-family: var(--font-body);
  border: none;
  cursor: pointer;
}

.pricing-card.free .price-btn {
  background: var(--color-card);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.pricing-card.pro .price-btn {
  background: var(--color-accent);
  color: #fff;
}

.pricing-card .price-btn:hover { opacity: 0.9; }

/* ── Final CTA ── */
.final-cta {
  text-align: center;
}

.final-cta .cta-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid #b2dfdf;
  background: transparent;
  margin-bottom: 32px;
}

.final-cta .cta-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse 2s ease-in-out infinite;
}

.final-cta .cta-badge span {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.final-cta h2 {
  text-align: center;
}

.final-cta .cta-sub {
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--color-text-secondary);
  max-width: 540px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.final-cta .cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 48px;
}

.trust-pills {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.trust-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  font-size: 12px;
  color: var(--color-text-secondary);
}

/* ── Footer ── */
.footer {
  background: var(--color-text);
  color: #D1D5DB;
  padding: 64px 0 32px;
  border-top: 1px solid #2D3039;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-top: 16px;
  max-width: 280px;
}

.footer-status {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 11px;
  color: var(--color-text-tertiary);
}

.footer-status .status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse 2s ease-in-out infinite;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li { margin-bottom: 10px; }

.footer-col a {
  color: #9CA3AF;
  text-decoration: none;
  font-size: 13px;
  transition: opacity 0.2s;
}

.footer-col a:hover { opacity: 0.8; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid #2D3039;
}

.footer-bottom .copyright {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-tertiary);
}

.footer-bottom .footer-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-bottom .footer-cta .price-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-secondary);
}

/* ── Waitlist Form ── */
.waitlist-form {
  display: flex;
  max-width: 440px;
  margin: 0 auto;
  gap: 8px;
}

.waitlist-form input[type="email"] {
  flex: 1;
  padding: 14px 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 16px;
  font-family: var(--font-body);
  outline: none;
  transition: border-color 0.2s;
}

.waitlist-form input[type="email"]:focus {
  border-color: var(--color-accent);
}

.waitlist-form input[type="email"]::placeholder {
  color: var(--color-text-tertiary);
}

.waitlist-form button {
  padding: 14px 28px;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.2s;
}

.waitlist-form button:hover { opacity: 0.9; }
.waitlist-form button:disabled { opacity: 0.6; cursor: not-allowed; }

.waitlist-note {
  font-size: 14px;
  color: var(--color-text-tertiary);
  margin-top: 12px;
  text-align: center;
}

.waitlist-success { color: var(--color-success); font-weight: 500; }
.waitlist-error { color: var(--color-error); font-weight: 500; }

/* ── Single Page Content ── */
.page-content {
  padding: 120px 0 80px;
}

.page-content h1 {
  font-family: var(--font-display);
  font-size: 40px;
  margin-bottom: 16px;
}

.page-content .last-updated {
  color: var(--color-text-tertiary);
  font-size: 14px;
  margin-bottom: 40px;
}

.page-content h2 {
  font-family: var(--font-display);
  font-size: 24px;
  margin: 40px 0 16px;
  text-align: left;
}

.page-content h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin: 28px 0 12px;
}

.page-content p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.page-content ul, .page-content ol {
  color: var(--color-text-secondary);
  padding-left: 24px;
  margin-bottom: 16px;
}

.page-content li {
  margin-bottom: 8px;
  line-height: 1.6;
}

.page-content a {
  color: var(--color-accent);
  text-decoration: none;
}

.page-content a:hover { text-decoration: underline; }

.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 24px;
}

.page-content th, .page-content td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 14px;
}

.page-content th {
  color: var(--color-text);
  font-weight: 600;
}

.page-content strong {
  color: var(--color-text);
}

/* ── Feature Stat Pills ── */
.feature-stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* ── Feature Detail Grid (Features Page) ── */
.feature-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}

.feature-detail-grid.feature-reverse > :first-child {
  order: 2;
}

.feature-detail-grid.feature-reverse > :last-child {
  order: 1;
}

.feature-bullets {
  list-style: none;
  margin-top: 20px;
}

.feature-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.check-circle {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #e0f2f2;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
  margin-top: 1px;
}

.feature-mockup-area {
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-mockup-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

/* ── About Page ── */
.about-stat {
  padding: 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-align: center;
}

/* ── Billing Toggle (Pricing Page) ── */
.billing-btn {
  padding: 8px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-body);
  cursor: pointer;
  background: transparent;
  color: var(--color-text-secondary);
  transition: all 0.2s;
}

.billing-btn.active {
  background: var(--color-card);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

/* ── Comparison Table (Pricing Page) ── */
.comparison-table {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-card);
}

.comp-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 12px;
  padding: 12px 24px;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}

.comp-row:last-child {
  border-bottom: none;
}

.comp-row.comp-header {
  background: var(--color-bg);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.comp-row.comp-category {
  display: block;
  background: var(--color-bg);
  font-weight: 600;
  font-size: 12px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  padding: 10px 24px;
}

.comp-row > div:nth-child(2),
.comp-row > div:nth-child(3) {
  text-align: center;
}

/* ── FAQ (Pricing Page) ── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-item summary {
  padding: 20px 0;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 20px;
  font-weight: 300;
  color: var(--color-text-tertiary);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  content: '\2212';
}

.faq-item p {
  padding: 0 0 20px;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ── Dashboard Mockup (shared) ── */
.dashboard-mockup {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-card);
}

.mockup-chrome {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.mockup-dots {
  display: flex;
  gap: 6px;
}

.mockup-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
}

.mockup-url {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-tertiary);
  padding: 4px 12px;
  background: var(--color-card);
  border-radius: 4px;
  border: 1px solid var(--color-border);
}

.mockup-body {
  padding: 24px;
}

/* ── Community Landing Page ── */
.data-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.data-card h3 {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.data-card-body {
  padding: 20px 24px;
}

.methodology-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.principle-card {
  padding: 24px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.principle-card h4 {
  font-size: 14px;
  font-weight: 600;
  margin: 12px 0 8px;
}

.principle-card p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ── Register Page ── */
.register-hero {
  padding: clamp(120px, 14vw, 180px) 0 clamp(60px, 8vw, 100px);
}

/* ── Tool Detail Page ── */
.tool-detail-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}

.tool-detail-mockup {
  display: flex;
  align-items: center;
  justify-content: center;
}

.access-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
}

.access-badge--free {
  background: #ECFDF5;
  color: var(--color-success);
}

.access-badge--email {
  background: #E6F3F3;
  color: var(--color-accent);
}

.access-badge--limited {
  background: #FFFBEB;
  color: var(--color-warning);
}

.tool-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.tool-step {
  padding: 28px 24px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-align: center;
}

.tool-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #e0f2f2;
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
}

.tool-step h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.tool-step p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ── Feature Mockup Cards (shared across tool + feature pages) ── */
.fm-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 400px;
}

.fm-card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.fm-card-body {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Pipeline steps (evaluate) */
.fm-pipeline {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.fm-step-done {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.fm-check {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-success);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  flex-shrink: 0;
}

/* Verdict banner */
.fm-verdict {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-top: 4px;
}

.fm-verdict--pass {
  background: #ECFDF5;
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.fm-verdict-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-success);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

/* Bar metrics (cognitive, bio age) */
.fm-metric {
  padding: 0;
}

.fm-bar {
  height: 6px;
  background: #F3F4F6;
  border-radius: 3px;
  overflow: hidden;
}

.fm-bar-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--color-accent);
}

/* System rows (bio age) */
.fm-system-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Breathing circle */
.fm-breathe-circle {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 3px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 16px auto;
  animation: breathe-pulse 4s ease-in-out infinite;
}

@keyframes breathe-pulse {
  0%, 100% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1); opacity: 1; }
}

.fm-breathe-inner {
  text-align: center;
}

/* Protocol list (breathing) */
.fm-protocol {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.fm-protocol--active {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
  color: var(--color-text);
}

/* Search box (DSLD) */
.fm-search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
}

/* Result list (DSLD) */
.fm-result-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.fm-result {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

.fm-result:last-child {
  border-bottom: none;
}

/* Grade badges (DSLD) */
.fm-grade {
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
}

.fm-grade--a {
  background: #e0f2f2;
  color: var(--color-accent);
}

.fm-grade--b {
  background: #e0f2f2;
  color: var(--color-accent);
}

/* Safety items (interaction checker) */
.fm-safety-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.fm-safety-item:hover {
  border-color: rgba(0, 128, 128, 0.3);
}

.fm-severity {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  flex-shrink: 0;
}

.fm-severity--error {
  background: #FEF2F2;
  color: var(--color-error);
}

.fm-severity--warning {
  background: #FFFBEB;
  color: var(--color-warning);
}

.fm-severity--success {
  background: #ECFDF5;
  color: var(--color-success);
}

/* ── Feature Page Mockup Screenshots ── */
.feature-mockup-screenshot {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

/* ── Tool Card Alignment ── */
.tool-card {
  display: flex;
  flex-direction: column;
}

.tool-card p {
  flex: 1;
}

/* ── Footer Column Balance ── */
.footer-col {
  min-width: 120px;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .layers-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .optimizers-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-sub { margin-left: auto; margin-right: auto; }

  .hero-actions { justify-content: center; }

  .hero-stats { justify-content: center; }

  .hero-visual { margin-top: 32px; }

  .problem-grid { grid-template-columns: 1fr; }

  .layers-grid { grid-template-columns: 1fr 1fr; }

  .ai-grid { grid-template-columns: 1fr; }

  .eval-grid { grid-template-columns: 1fr; }

  .tools-grid { grid-template-columns: 1fr 1fr; }

  .optimizers-grid { grid-template-columns: 1fr; }

  .case-grid { grid-template-columns: 1fr; }

  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; }

  .feature-detail-grid {
    grid-template-columns: 1fr;
  }

  .feature-detail-grid.feature-reverse > :first-child { order: 1; }
  .feature-detail-grid.feature-reverse > :last-child { order: 2; }

  .tool-detail-hero { grid-template-columns: 1fr; text-align: center; }
  .tool-detail-hero p { margin-left: auto; margin-right: auto; }
  .tool-detail-hero .section-eyebrow { justify-content: center; }
  .tool-detail-hero .access-badge { margin: 0 auto; }
  .tool-detail-hero > div:first-child > div:last-child { justify-content: center; }
  .tool-detail-mockup { margin-top: 32px; }
  .tool-steps { grid-template-columns: 1fr 1fr; }

  .methodology-grid { grid-template-columns: 1fr 1fr; }

  .community-row {
    grid-template-columns: 2fr 1.5fr 1fr;
  }

  .community-row .grade-col,
  .community-row .dose-col {
    display: none;
  }

  /* Comparison table horizontal scroll */
  .comparison-table {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .comparison-table .comp-row {
    min-width: 500px;
  }

  .nav-links { display: none; }

  .nav-mobile-toggle { display: block; }

  .mobile-menu { display: flex; }

  .section { padding: clamp(48px, 8vw, 80px) 0; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .waitlist-form { flex-direction: column; }
  .waitlist-form button { width: 100%; }
}

@media (max-width: 640px) {
  /* Bio Age Calculator mobile form */
  .ba-form-grid {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
  .ba-form-grid input,
  .ba-form-grid select {
    min-width: 100%;
    min-height: 44px;
    font-size: 16px !important;
  }
  .ba-demographics-row {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  .ba-biomarker-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  .ba-biomarker-grid > div[style*="grid-column"] {
    grid-column: auto !important;
  }

  /* Community table horizontal scroll */
  .community-table {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .community-row {
    min-width: 500px;
  }

  /* Page content + blog tables responsive */
  .page-content table,
  .blog-content table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Breathing protocol cards */
  #bt-protocols {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
}

@media (max-width: 480px) {
  .layers-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: 1fr; }
  .tool-steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .hero-actions { flex-direction: column; }
  .hero-actions a { width: 100%; text-align: center; justify-content: center; }
  .methodology-grid { grid-template-columns: 1fr; }
  .comp-row { grid-template-columns: 2fr 1fr 1fr; padding: 10px 16px; font-size: 13px; }
  .ba-form-grid { grid-template-columns: 1fr !important; }
}

/* ── Public Tool Extras ── */
.tool-spinner {
  width: 28px; height: 28px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: tool-spin 0.7s linear infinite;
  margin: 0 auto;
}
@keyframes tool-spin { to { transform: rotate(360deg); } }

.fm-grade--df { background: #FEE2E2; color: var(--color-error); }
.fm-severity--info { background: #EFF6FF; color: #2563EB; }

/* ── Changelog ── */
.changelog-entry {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}
.changelog-entry:last-of-type { border-bottom: none; }
.changelog-date {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-tertiary);
  margin-bottom: 8px;
}
.changelog-entry h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
.changelog-entry p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}
.changelog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}
.changelog-tags span {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-weight: 500;
}

/* ── Blog Content ── */
.blog-content h2 {
  font-size: 24px;
  font-weight: 600;
  margin: 32px 0 12px;
}
.blog-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 8px;
}
.blog-content p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}
.blog-content ul, .blog-content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}
.blog-content li {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}
.blog-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}
.blog-content th, .blog-content td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.blog-content th {
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-bg);
}
.blog-content td {
  color: var(--color-text-secondary);
}
.blog-content strong {
  color: var(--color-text);
  font-weight: 600;
}
.blog-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-light);
  text-underline-offset: 2px;
}
.blog-content a:hover {
  text-decoration-color: var(--color-accent);
}

/* CTA waitlist qualifier */
.cta-qualifier {
  display: block;
  font-size: 10px;
  font-weight: 400;
  opacity: 0.7;
  margin-top: 1px;
  letter-spacing: 0;
  text-transform: none;
}
.btn-cta-nav .cta-qualifier {
  font-size: 9px;
}
.footer-cta .cta-qualifier {
  font-size: 9px;
}