/* ============================================================
   GIESEN LABS — Style System
   Art direction: dark lab / warm amber glow / precise minimal
   ============================================================ */

/* --- Design Tokens --- */
:root {
  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.75vw,   1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem + 1.25vw,  2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem + 2.5vw,   3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem + 4vw,       5rem);
  --text-hero: clamp(3rem,     0.5rem + 7vw,     7.5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Content widths */
  --content-narrow:  640px;
  --content-default: 960px;
  --content-wide:    1200px;

  /* Radius */
  --radius-sm:   0.375rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-reveal:      600ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Fonts */
  --font-display: 'Clash Display', 'Helvetica Neue', sans-serif;
  --font-body:    'Satoshi', 'Inter', sans-serif;
}

/* --- Dark Mode (default) --- */
:root,
[data-theme="dark"] {
  --color-bg:              #0e0d0c;
  --color-surface:         #141311;
  --color-surface-2:       #1a1917;
  --color-surface-offset:  #1f1e1b;
  --color-border:          #2a2825;
  --color-divider:         #222019;

  --color-text:            #e8e4de;
  --color-text-muted:      #8a8680;
  --color-text-faint:      #524f4a;

  /* Amber/gold warm accent — inspired by Edison bulb */
  --color-primary:         #c8862a;
  --color-primary-hover:   #e0982f;
  --color-primary-glow:    rgba(200, 134, 42, 0.15);
  --color-primary-glow-lg: rgba(200, 134, 42, 0.08);
  --color-primary-highlight: #2c2318;

  --shadow-sm:  0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md:  0 4px 12px oklch(0 0 0 / 0.45);
  --shadow-lg:  0 16px 48px oklch(0 0 0 / 0.6);
}

/* --- Light Mode --- */
[data-theme="light"] {
  --color-bg:              #f8f6f1;
  --color-surface:         #fdfcfa;
  --color-surface-2:       #ffffff;
  --color-surface-offset:  #f0ede7;
  --color-border:          #ddd8d0;
  --color-divider:         #e8e4dd;

  --color-text:            #1c1a16;
  --color-text-muted:      #7a766f;
  --color-text-faint:      #b8b4ae;

  --color-primary:         #a06620;
  --color-primary-hover:   #c47d28;
  --color-primary-glow:    rgba(160, 102, 32, 0.12);
  --color-primary-glow-lg: rgba(160, 102, 32, 0.06);
  --color-primary-highlight: #f0e4d0;

  --shadow-sm:  0 1px 2px oklch(0.2 0.01 80 / 0.06);
  --shadow-md:  0 4px 12px oklch(0.2 0.01 80 / 0.08);
  --shadow-lg:  0 12px 32px oklch(0.2 0.01 80 / 0.12);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:              #0e0d0c;
    --color-surface:         #141311;
    --color-surface-2:       #1a1917;
    --color-surface-offset:  #1f1e1b;
    --color-border:          #2a2825;
    --color-divider:         #222019;
    --color-text:            #e8e4de;
    --color-text-muted:      #8a8680;
    --color-text-faint:      #524f4a;
    --color-primary:         #c8862a;
    --color-primary-hover:   #e0982f;
    --color-primary-glow:    rgba(200, 134, 42, 0.15);
    --color-primary-glow-lg: rgba(200, 134, 42, 0.08);
    --color-primary-highlight: #2c2318;
    --shadow-sm:  0 1px 2px oklch(0 0 0 / 0.3);
    --shadow-md:  0 4px 12px oklch(0 0 0 / 0.45);
    --shadow-lg:  0 16px 48px oklch(0 0 0 / 0.6);
  }
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.1;
}

p, li {
  text-wrap: pretty;
  max-width: 68ch;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-interactive), opacity var(--transition-interactive);
}

button {
  cursor: pointer;
  background: none;
  border: none;
  font: inherit;
  color: inherit;
  transition: color var(--transition-interactive), background var(--transition-interactive), opacity var(--transition-interactive);
}

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

::selection {
  background: var(--color-primary-glow);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

/* --- Layout Container --- */
.container {
  width: min(var(--content-wide), 100%);
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
  margin-inline: auto;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--color-bg) 80%, transparent);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.nav--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  width: min(var(--content-wide), 100%);
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
  margin-inline: auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  opacity: 0.9;
  transition: opacity var(--transition-interactive);
}
.nav-logo:hover { opacity: 1; }

.footer-logo {
  opacity: 0.7;
}
.footer-logo:hover { opacity: 1; }

.logo-img {
  height: 28px;
  width: auto;
  display: block;
  /* Invert gray strokes to white on dark bg */
  filter: invert(1) brightness(2);
  transition: filter var(--transition-interactive);
}

[data-theme="light"] .logo-img {
  filter: none;
}

.logo-img--small {
  height: 24px;
}

.logo-wordmark {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-text);
  line-height: 1;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* --- Buttons --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: #0e0d0c;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
  transition: background var(--transition-interactive), transform var(--transition-interactive), box-shadow var(--transition-interactive);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--color-primary-glow);
}
.btn-primary:active { transform: translateY(0); }

[data-theme="light"] .btn-primary { color: #fff; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  padding: var(--space-3) var(--space-5);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 400;
  border-radius: var(--radius-full);
  transition: border-color var(--transition-interactive), color var(--transition-interactive), background var(--transition-interactive);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-glow);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}
.btn-ghost:hover { color: var(--color-text); }
.btn-ghost .arrow {
  transition: transform var(--transition-interactive);
}
.btn-ghost:hover .arrow { transform: translateX(4px); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding-top: 64px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0;
  animation: orbFade 2s ease forwards;
}

.glow-orb--1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(200, 134, 42, 0.18), transparent 70%);
  right: -60px;
  top: 10%;
  animation-delay: 0.4s;
}

.glow-orb--2 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(200, 134, 42, 0.08), transparent 70%);
  left: 5%;
  bottom: 20%;
  animation-delay: 0.8s;
}

.noise-overlay {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: clamp(var(--space-12), 8vw, var(--space-24)) clamp(var(--space-6), 5vw, var(--space-16));
  padding-right: var(--space-12);
  opacity: 0;
  transform: translateY(24px);
  animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
}

.eyebrow-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-glow);
  border: 1px solid color-mix(in oklab, var(--color-primary) 30%, transparent);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.eyebrow-tag--light {
  background: var(--color-primary-highlight);
}

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

.hero-heading {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1.0;
  margin-bottom: var(--space-6);
}

.hero-heading em {
  font-style: italic;
  color: var(--color-primary);
  font-weight: 400;
}

.hero-sub {
  font-size: var(--text-lg);
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 44ch;
  margin-bottom: var(--space-10);
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* Hero Device */
.hero-device {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  opacity: 0;
  animation: deviceReveal 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.5s forwards;
}

.device-halo {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
  pointer-events: none;
  animation: haloPulse 4s ease-in-out infinite;
}

.device-img {
  width: min(380px, 100%);
  border-radius: var(--radius-xl);
  box-shadow:
    var(--shadow-lg),
    0 0 60px rgba(200, 134, 42, 0.12);
  position: relative;
  z-index: 1;
  animation: deviceFloat 6s ease-in-out infinite;
}

.hero-scroll-cue {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  margin: 0 auto;
  animation: scrollCue 2s ease-in-out infinite;
}

/* ============================================================
   MANIFESTO
   ============================================================ */
.manifesto {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  border-top: 1px solid var(--color-divider);
}

.manifesto-grid {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--space-12);
  align-items: start;
}

.manifesto-label {
  padding-top: var(--space-2);
}

.label-text {
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
}

.manifesto-statement {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: var(--space-6);
  max-width: 100%;
}

.manifesto-detail {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 56ch;
}

/* --- Pillars grid --- */
.pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  margin-top: clamp(var(--space-12), 6vw, var(--space-20));
  padding-top: clamp(var(--space-10), 5vw, var(--space-16));
  border-top: 1px solid var(--color-divider);
}

.pillar {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.pillar:hover {
  border-color: color-mix(in oklab, var(--color-primary) 40%, var(--color-border));
  box-shadow: var(--shadow-sm);
}

.pillar-num {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.06em;
}

.pillar-title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.3;
}

.pillar-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  max-width: 100%;
}

@media (max-width: 900px) {
  .pillars { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 500px) {
  .pillars { grid-template-columns: 1fr; }
}

/* ============================================================
   PRODUCT / BART
   ============================================================ */
.product {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  border-top: 1px solid var(--color-divider);
}

.product-header {
  text-align: center;
  margin-bottom: clamp(var(--space-12), 6vw, var(--space-20));
}

.section-heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.section-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-inline: auto;
  line-height: 1.65;
}

.product-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 6vw, var(--space-20));
  align-items: center;
  margin-bottom: clamp(var(--space-12), 6vw, var(--space-20));
}

.product-image-wrap {
  position: relative;
}

.product-image-glow {
  position: absolute;
  inset: -40px;
  background: radial-gradient(circle at 50% 50%, var(--color-primary-glow-lg), transparent 70%);
  pointer-events: none;
}

.product-img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg), 0 0 80px rgba(200, 134, 42, 0.10);
}

.product-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.feature-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: var(--space-4);
  align-items: start;
  opacity: 0;
  transform: translateX(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.feature-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.feature-item:nth-child(1) { transition-delay: 0ms; }
.feature-item:nth-child(2) { transition-delay: 80ms; }
.feature-item:nth-child(3) { transition-delay: 160ms; }
.feature-item:nth-child(4) { transition-delay: 240ms; }

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-primary-highlight);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  flex-shrink: 0;
}

.feature-text h3 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.feature-text p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  max-width: 36ch;
}

/* ============================================================
   BART — Extended section styles
   ============================================================ */

.bart-tagline {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  font-style: italic;
  margin-bottom: var(--space-2);
}

/* Category statement (right of image) */
.bart-category-statement {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-4);
}

.bart-category-headline {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0;
}

.bart-category-body {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin: 0;
  max-width: 52ch;
}

.bart-cta {
  align-self: flex-start;
  margin-top: var(--space-2);
}

/* Four pillar cards */
.bart-pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-12);
  margin-bottom: var(--space-10);
}

.bart-pillar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.bart-pillar-card:hover {
  border-color: var(--color-amber);
  box-shadow: 0 0 24px rgba(200, 134, 42, 0.08);
}

.bart-pillar-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(200, 134, 42, 0.08);
  border: 1px solid rgba(200, 134, 42, 0.18);
  border-radius: 10px;
  color: var(--color-amber);
  flex-shrink: 0;
}

.bart-pillar-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  letter-spacing: -0.02em;
}

.bart-pillar-body {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  line-height: 1.65;
  margin: 0;
  flex: 1;
}

.bart-pillar-quote {
  font-size: var(--text-xs);
  color: var(--color-amber);
  font-style: italic;
  opacity: 0.8;
  margin-top: auto;
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border);
}

/* Proof points strip */
.bart-proof {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
  padding: var(--space-5) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  margin-bottom: var(--space-6);
  align-items: center;
  justify-content: center;
}

.bart-proof-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.bart-proof-item svg {
  color: var(--color-amber);
  flex-shrink: 0;
  opacity: 0.85;
}

/* Mobile responsive */
@media (max-width: 960px) {
  .bart-pillars {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .bart-pillars {
    grid-template-columns: 1fr;
  }
  .bart-category-headline {
    font-size: var(--text-xl);
  }
}

/* Status Bar */
.status-bar {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-6) var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  flex-wrap: wrap;
}

.status-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.status-label {
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
}

.status-value {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.status-value--active { color: var(--color-primary); }

.status-divider {
  width: 1px;
  height: 32px;
  background: var(--color-border);
  flex-shrink: 0;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

/* ============================================================
   RETCONTEXT SECTION
   ============================================================ */

/* Teal accent tokens — distinct from BART's amber */
:root,
[data-theme="dark"] {
  --color-teal:           #2dd4bf;
  --color-teal-hover:     #5eead4;
  --color-teal-glow:      rgba(45, 212, 191, 0.12);
  --color-teal-highlight: rgba(45, 212, 191, 0.08);
  --color-teal-border:    rgba(45, 212, 191, 0.2);
}
[data-theme="light"] {
  --color-teal:           #0d9488;
  --color-teal-hover:     #0f766e;
  --color-teal-glow:      rgba(13, 148, 136, 0.1);
  --color-teal-highlight: rgba(13, 148, 136, 0.06);
  --color-teal-border:    rgba(13, 148, 136, 0.2);
}

.product--retcontext {
  background: linear-gradient(
    to bottom,
    var(--color-bg),
    color-mix(in oklab, var(--color-teal) 3%, var(--color-bg)) 50%,
    var(--color-bg)
  );
}

/* ============================================================
   LANT — Gold accent tokens
   ============================================================ */
:root,
[data-theme="dark"] {
  --color-gold:           #e8b84b;
  --color-gold-hover:     #f0cc7a;
  --color-gold-glow:      rgba(232, 184, 75, 0.12);
  --color-gold-highlight: rgba(232, 184, 75, 0.07);
  --color-gold-border:    rgba(232, 184, 75, 0.2);
}
[data-theme="light"] {
  --color-gold:           #b8860b;
  --color-gold-hover:     #9a7009;
  --color-gold-glow:      rgba(184, 134, 11, 0.1);
  --color-gold-highlight: rgba(184, 134, 11, 0.06);
  --color-gold-border:    rgba(184, 134, 11, 0.2);
}

.product--lant {
  background: linear-gradient(
    to bottom,
    var(--color-bg),
    color-mix(in oklab, var(--color-gold) 4%, var(--color-bg)) 50%,
    var(--color-bg)
  );
}

.tag-dot--gold   { background: var(--color-gold); }
.pulse-dot--gold { background: var(--color-gold); }
.status-value--gold { color: var(--color-gold); }

/* Lantern icon */
.lant-icon-hero {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: var(--space-6);
}
.lant-lantern {
  color: var(--color-gold);
  filter: drop-shadow(0 0 16px var(--color-gold-glow));
}

/* Layout */
.lant-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
  margin-top: var(--space-10);
  margin-bottom: var(--space-10);
}

/* Left content */
.lant-acronym {
  font-size: var(--text-sm);
  color: var(--color-gold);
  font-style: italic;
  margin-bottom: var(--space-2);
  opacity: 0.85;
}

.lant-description {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-4);
}

.lant-pillars {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-top: var(--space-6);
}

.lant-pillar {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.pillar-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gold-highlight);
  border: 1px solid var(--color-gold-border);
  border-radius: 8px;
  color: var(--color-gold);
}

.pillar-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--space-1);
  letter-spacing: -0.01em;
}

.pillar-body {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  line-height: 1.6;
  margin: 0;
}

/* Right card */
.lant-card {
  background: var(--color-surface);
  border: 1px solid var(--color-gold-border);
  border-radius: 16px;
  padding: var(--space-6);
  box-shadow: 0 0 40px var(--color-gold-glow);
}

.lant-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
  gap: var(--space-2);
}

.lant-dimensions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.lant-dimension { display: flex; flex-direction: column; gap: var(--space-1); }

.dimension-bar-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.dimension-label {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

.dimension-track {
  height: 5px;
  background: var(--color-surface-offset);
  border-radius: 99px;
  overflow: hidden;
}

.dimension-fill {
  height: 100%;
  border-radius: 99px;
  width: var(--w, 80%);
  transition: width 1s ease;
}

.dimension-fill--primary { background: var(--color-gold); opacity: 0.7; }

.lant-card-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-style: italic;
  margin-bottom: var(--space-5);
  padding-top: var(--space-2);
}

.lant-card-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}

.lant-stat {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  min-width: 0;
}

.lant-stat-icon {
  color: var(--color-gold);
  opacity: 0.55;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.lant-stat-num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-gold);
  flex-shrink: 0;
}

.lant-stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.lant-stat-divider {
  width: 100%;
  height: 1px;
  background: var(--color-divider);
  flex-shrink: 0;
}

@media (max-width: 780px) {
  .lant-layout {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

.tag-dot--teal {
  background: var(--color-teal);
}

.pulse-dot--teal {
  background: var(--color-teal);
}

.status-value--teal {
  color: var(--color-teal);
}

.retcontext-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-20));
  align-items: start;
  margin-bottom: clamp(var(--space-12), 6vw, var(--space-20));
}

.retcontext-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-teal);
  margin-bottom: var(--space-4);
}

.retcontext-heading {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 1rem + 2vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: var(--space-5);
}

.retcontext-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-5);
  max-width: 52ch;
}

.retcontext-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.retcontext-feature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.retcontext-feature svg {
  flex-shrink: 0;
  color: var(--color-teal);
}

.btn-primary--teal {
  background: var(--color-teal);
  color: #0a0f0f;
}
.btn-primary--teal:hover {
  background: var(--color-teal-hover);
  box-shadow: 0 4px 20px var(--color-teal-glow);
}
[data-theme="light"] .btn-primary--teal { color: #fff; }

/* Benchmark card */
.benchmark-card {
  background: var(--color-surface);
  border: 1px solid var(--color-teal-border);
  border-radius: calc(var(--radius-xl) * 1.5);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: relative;
  overflow: hidden;
}

.benchmark-card::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--color-teal-glow), transparent 70%);
  pointer-events: none;
}

.benchmark-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.benchmark-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
}

.benchmark-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-teal);
  font-weight: 500;
}

/* Chart */
.benchmark-chart {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.benchmark-axis-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 500;
}

.benchmark-bars {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.benchmark-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  align-items: center;
  gap: var(--space-3);
}

.bar-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
  white-space: nowrap;
}

.bar-track {
  background: var(--color-surface-offset);
  border-radius: var(--radius-full);
  height: 32px;
  overflow: hidden;
  position: relative;
}

.bar-fill {
  height: 100%;
  width: var(--pct);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: var(--space-3);
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.bar-fill--baseline {
  background: color-mix(in oklab, var(--color-text-faint) 60%, transparent);
}

.bar-fill--rtc {
  background: linear-gradient(90deg, var(--color-teal), color-mix(in oklab, var(--color-teal) 80%, var(--color-teal-hover)));
  box-shadow: 0 0 16px var(--color-teal-glow);
}

.bar-value {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-bg);
}

.bar-fill--baseline .bar-value {
  color: var(--color-text);
}

.bar-value--locked {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
}

.stat-num--locked {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.55;
}

.benchmark-x-labels {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  padding-left: 110px;
  padding-right: 0;
  margin-top: calc(var(--space-1) * -1);
}

.benchmark-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.5;
  font-style: italic;
  max-width: 100%;
  margin-top: var(--space-1);
}

/* Stats row */
.benchmark-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}

.benchmark-stat {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  min-width: 0;
}

.stat-num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.stat-num--teal { color: var(--color-teal); }

.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.3;
}

.stat-divider {
  width: 100%;
  height: 1px;
  background: var(--color-divider);
  flex-shrink: 0;
}

.benchmark-footer {
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
}

.benchmark-disclaimer {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-style: italic;
}

/* Responsive */
@media (max-width: 900px) {
  .retcontext-showcase {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   BLOG PREVIEW
   ============================================================ */
.blog-preview {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  border-top: 1px solid var(--color-divider);
}

.blog-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
  gap: var(--space-6);
}

.blog-header-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.blog-grid {
  display: grid;
  gap: var(--space-6);
}

.blog-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: clamp(var(--space-8), 4vw, var(--space-10));
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius-xl) * 1.5);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
  text-decoration: none;
  color: inherit;
}

.blog-card:hover {
  border-color: color-mix(in oklab, var(--color-primary) 45%, var(--color-border));
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.blog-card--featured {
  max-width: 720px;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.blog-date {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.blog-card-title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 0.8rem + 1.5vw, 1.6rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--color-text);
}

.blog-card-excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 64ch;
}

.blog-read-more {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
  margin-top: var(--space-2);
  transition: gap var(--transition-interactive);
}
.blog-card:hover .blog-read-more { gap: var(--space-3); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition-interactive), background var(--transition-interactive);
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}
.nav-link--muted {
  opacity: 0.4;
  cursor: default;
  pointer-events: none;
}

/* Mobile nav */
.nav-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  cursor: pointer;
  background: none;
  border: none;
  color: var(--color-text-muted);
  transition: background var(--transition-interactive), color var(--transition-interactive);
}
.nav-menu-toggle:hover {
  background: var(--color-surface-offset);
  color: var(--color-text);
}
.nav-menu-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}
.nav-menu-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-menu-toggle.open span:nth-child(2) { opacity: 0; }
.nav-menu-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-mobile-drawer {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: color-mix(in oklab, var(--color-bg) 96%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) clamp(var(--space-6), 5vw, var(--space-16));
  flex-direction: column;
  gap: var(--space-1);
  z-index: 99;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
}
.nav-mobile-drawer.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.nav-mobile-drawer .nav-link {
  font-size: var(--text-base);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  width: 100%;
}
.nav-mobile-drawer .btn-outline {
  margin-top: var(--space-2);
  justify-content: center;
  border-radius: var(--radius-lg);
}

@media (max-width: 680px) {
  .nav-links { display: none; }
  .nav-actions .btn-outline { display: none; }
  .nav-menu-toggle { display: flex; }
  .nav-mobile-drawer { display: flex; }
}

/* ============================================================
   NOTIFY / WAITLIST
   ============================================================ */
.notify {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  border-top: 1px solid var(--color-divider);
}

.notify-inner {
  position: relative;
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
  padding: clamp(var(--space-10), 6vw, var(--space-16));
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius-xl) * 2);
  overflow: hidden;
}

.notify-glow {
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 200px;
  background: radial-gradient(circle, var(--color-primary-glow), transparent 70%);
  pointer-events: none;
  filter: blur(30px);
}

.notify-content {
  position: relative;
  z-index: 1;
}

.notify-heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.notify-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  max-width: 40ch;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.notify-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: center;
}

.form-group {
  display: flex;
  width: 100%;
  max-width: 460px;
  gap: var(--space-2);
}

.form-input {
  flex: 1;
  padding: var(--space-3) var(--space-5);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
  min-width: 0;
}
.form-input::placeholder { color: var(--color-text-faint); }
.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.btn-primary--form {
  flex-shrink: 0;
  white-space: nowrap;
}

.form-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: 100%;
}

.form-success {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
  padding: var(--space-3);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding-block: var(--space-10);
  border-top: 1px solid var(--color-divider);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-tagline {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  max-width: 100%;
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: 100%;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes slideUp {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes deviceReveal {
  to { opacity: 1; }
}

@keyframes orbFade {
  to { opacity: 1; }
}

@keyframes haloPulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50%       { transform: scale(1.08); opacity: 1; }
}

@keyframes deviceFloat {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-12px); }
}

@keyframes scrollCue {
  0%, 100% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  40%       { opacity: 1; transform: scaleY(1); }
  80%       { opacity: 0; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-bottom: var(--space-12);
  }

  .hero-content {
    padding-right: clamp(var(--space-6), 5vw, var(--space-16));
    text-align: center;
    padding-top: calc(64px + var(--space-10));
  }

  .hero-sub { margin-inline: auto; }
  .hero-cta { justify-content: center; }

  .hero-device {
    padding-top: 0;
    padding-bottom: var(--space-8);
  }

  .device-img { width: min(280px, 85%); }
  .device-halo { width: 280px; height: 280px; }

  .hero-scroll-cue { display: none; }

  .manifesto-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .manifesto-statement {
    font-size: var(--text-xl);
  }

  .product-showcase {
    grid-template-columns: 1fr;
  }

  .product-img { max-width: 320px; margin-inline: auto; }

  .status-bar {
    gap: var(--space-4);
    flex-direction: column;
    align-items: flex-start;
  }

  .status-divider { display: none; }

  .notify-inner {
    padding: var(--space-8) var(--space-5);
  }

  .form-group {
    flex-direction: column;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .hero-heading {
    font-size: clamp(2.5rem, 10vw, 4rem);
  }
  .section-heading {
    font-size: clamp(2rem, 8vw, 3.5rem);
  }
}