/* === RESET & BASE === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #000000;
  --bg-alt: #0a0a0a;
  --bg-dark: #050505;
  --bg-darker: #000000;
  --surface: #111111;
  --surface-elevated: #1a1a1a;
  --text: #ffffff;
  --text-secondary: #c0c0c0;
  --text-muted: #808080;
  --text-on-dark: #e8e8e8;
  --text-on-dark-muted: #909090;
  --border: #2a2a2a;
  --border-light: #1e1e1e;
  --border-chrome: rgba(192, 192, 192, 0.25);
  /* Chrome/silver accent palette */
  --accent: #c0c0c0;
  --accent-light: rgba(192, 192, 192, 0.08);
  --accent-glow: rgba(192, 192, 192, 0.06);
  --accent-bright: #e8e8e8;
  --accent-dim: #888888;
  /* Subtle color hints for category badges (dark toned) */
  --blue: #7bb3d4;
  --blue-light: rgba(123, 179, 212, 0.1);
  --purple: #a98ecf;
  --purple-light: rgba(169, 142, 207, 0.1);
  --amber: #c9a84c;
  --amber-light: rgba(201, 168, 76, 0.1);
  --radius: 12px;
  --radius-lg: 20px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.5);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.4), 0 2px 4px rgba(0,0,0,0.5);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.5), 0 4px 12px rgba(0,0,0,0.4);
  --shadow-chrome: 0 0 20px rgba(192, 192, 192, 0.08), 0 4px 12px rgba(0,0,0,0.6);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: 0.2s ease;
  /* Chrome metallic gradient */
  --chrome-gradient: linear-gradient(135deg, #888888 0%, #e0e0e0 30%, #c0c0c0 50%, #e8e8e8 70%, #a0a0a0 100%);
  --chrome-gradient-subtle: linear-gradient(135deg, #2a2a2a 0%, #3a3a3a 50%, #2a2a2a 100%);
  --chrome-text: linear-gradient(135deg, #b0b0b0 0%, #f0f0f0 40%, #d0d0d0 60%, #e8e8e8 80%, #b0b0b0 100%);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* === NAVIGATION === */
.nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 40px;
  height: 72px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-chrome);
  transition: all var(--transition);
}

.nav-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-brand .brand-logo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle, #1a1a1a 0%, #0a0a0a 100%);
  border: 1px solid rgba(192, 192, 192, 0.15);
  box-shadow: 0 0 20px rgba(192, 192, 192, 0.08), inset 0 1px 2px rgba(255,255,255,0.05);
  flex-shrink: 0;
}

.nav-brand .brand-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.nav-brand .brand-mark {
  width: 38px;
  height: 38px;
  background: var(--chrome-gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

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

.nav-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}

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

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--chrome-gradient);
  border-radius: 1px;
}

.nav-cta {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 10px 20px;
  background: var(--chrome-gradient);
  color: #000;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.2px;
}

.nav-cta:hover {
  box-shadow: 0 0 20px rgba(192, 192, 192, 0.3), 0 4px 12px rgba(0,0,0,0.4);
  transform: translateY(-1px);
  filter: brightness(1.1);
}

/* Nav auth (injected by auth.js) */
.nav-auth {
  display: flex;
  align-items: center;
}

.nav-auth-btn {
  font-size: 0.85rem;
  font-weight: 600;
  color: #000;
  background: linear-gradient(135deg, #888 0%, #e0e0e0 50%, #a0a0a0 100%);
  padding: 8px 20px;
  border-radius: 8px;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.15s;
  white-space: nowrap;
}

.nav-auth-btn:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text);
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
}

/* === HERO === */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 40px 100px;
  position: relative;
  overflow: hidden;
  background: #000;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(192,192,192,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255,255,255,0.02) 0%, transparent 70%);
  pointer-events: none;
}

/* Chrome grid overlay on hero */
.hero .hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(192,192,192,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(192,192,192,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.hero-label {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--accent);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--chrome-gradient);
  border-radius: 1px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -2px;
  color: #ffffff;
  max-width: 700px;
  margin-bottom: 28px;
}

.hero h1 em {
  font-style: normal;
  background: var(--chrome-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.75;
  font-weight: 400;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  font-family: var(--font-body);
}

.btn-primary {
  background: var(--chrome-gradient);
  color: #000;
  letter-spacing: 0.2px;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 24px rgba(192, 192, 192, 0.3), 0 4px 16px rgba(0,0,0,0.4);
  filter: brightness(1.1);
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--border-chrome);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent-bright);
  background: var(--accent-light);
  transform: translateY(-1px);
}

.btn-on-dark {
  background: var(--chrome-gradient);
  color: #000;
  font-weight: 700;
}

.btn-on-dark:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 24px rgba(192, 192, 192, 0.3), 0 4px 16px rgba(0,0,0,0.6);
  filter: brightness(1.1);
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero-scroll .scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent-dim), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* === SECTION COMMONS === */
.section {
  padding: 100px 40px;
  position: relative;
}

.section-alt {
  background: var(--bg-alt);
}

.section-dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

.section-darker {
  background: var(--bg-darker);
  color: var(--text-on-dark);
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.section-label {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--accent-dim);
  margin-bottom: 16px;
}

.section-dark .section-label,
.section-darker .section-label {
  color: var(--accent);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 20px;
  max-width: 600px;
}

.section-dark .section-title,
.section-darker .section-title {
  color: white;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 48px;
}

.section-dark .section-subtitle,
.section-darker .section-subtitle {
  color: var(--text-on-dark-muted);
}

/* === FOUNDATION / TRUST CARDS === */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border-chrome);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 48px;
}

.trust-card {
  background: var(--surface);
  padding: 48px 36px;
  position: relative;
  transition: all var(--transition);
}

.trust-card:hover {
  background: var(--surface-elevated);
}

.trust-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.4rem;
}

.trust-card-icon.green {
  background: rgba(192, 192, 192, 0.1);
  color: var(--accent);
}
.trust-card-icon.blue {
  background: var(--blue-light);
  color: var(--blue);
}
.trust-card-icon.purple {
  background: var(--purple-light);
  color: var(--purple);
}

.trust-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--accent-bright);
}

.trust-card p {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* === COA EDUCATION === */
.coa-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.coa-content h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 24px;
  color: var(--text);
}

.coa-content p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
}

.coa-content p strong {
  color: var(--accent-bright);
}

.coa-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
  margin-top: 8px;
  transition: gap var(--transition);
}

.coa-link:hover {
  gap: 12px;
  color: var(--accent-bright);
}

.coa-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.coa-card {
  background: var(--surface);
  border: 1px solid var(--border-chrome);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}

.coa-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-chrome);
}

.coa-card h4 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--accent-bright);
}

.coa-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 0;
}

.coa-card .card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-size: 1.1rem;
  background: var(--accent-light);
  color: var(--accent);
}

/* === CTA BAND === */
.cta-band {
  padding: 80px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 50%, rgba(192,192,192,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.cta-band .section-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 1;
}

.cta-band h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  color: white;
  margin-bottom: 12px;
}

.cta-band p {
  color: var(--text-on-dark-muted);
  font-size: 1rem;
  margin-bottom: 32px;
  max-width: 450px;
}

/* === VERIFICATION STEPS === */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.step-card {
  position: relative;
}

.step-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  background: var(--chrome-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}

.step-card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--accent-bright);
}

.step-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* === COMPOUND CARDS === */
.compounds-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
}

.compounds-header .view-all {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.compounds-header .view-all:hover {
  gap: 10px;
  color: var(--accent-bright);
}

.compounds-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.compound-card {
  background: var(--surface);
  border: 1px solid var(--border-chrome);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.compound-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-chrome);
  transform: translateY(-2px);
  background: var(--surface-elevated);
}

.compound-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 16px;
  width: fit-content;
}

.compound-tag.metabolic { background: var(--blue-light); color: var(--blue); }
.compound-tag.mitochondrial { background: var(--purple-light); color: var(--purple); }
.compound-tag.coenzyme { background: var(--amber-light); color: var(--amber); }
.compound-tag.copper { background: var(--accent-light); color: var(--accent); }

.compound-card h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--accent-bright);
}

.compound-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}

.compound-card .learn-more {
  margin-top: 20px;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.compound-card:hover .learn-more {
  gap: 10px;
  color: var(--accent-bright);
}

/* Two wider cards on second row */
.compounds-grid-wide {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 20px;
}

/* === LAUNCH SKU SHOWCASE === */
.sku-showcase {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border-chrome);
}

.sku-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.sku-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border-chrome);
  border-radius: var(--radius);
  padding: 28px 24px 24px;
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.sku-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--chrome-gradient);
  opacity: 0.6;
  transition: opacity var(--transition);
}

.sku-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-chrome);
  transform: translateY(-3px);
}

.sku-card:hover::before {
  opacity: 1;
}

.sku-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.sku-badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
}

.sku-badge.metabolic { background: rgba(201, 168, 76, 0.12); color: var(--amber); }
.sku-badge.mitochondrial { background: var(--purple-light); color: var(--purple); }
.sku-badge.coenzyme { background: var(--blue-light); color: var(--blue); }

.sku-dosage {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-light);
  border: 1px solid var(--border-chrome);
  border-radius: 6px;
  padding: 3px 10px;
  letter-spacing: 0.02em;
}

.sku-name {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-bright);
  margin-bottom: 10px;
  line-height: 1.2;
}

.sku-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.sku-purity {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 7px 12px;
  background: rgba(192, 192, 192, 0.04);
  border: 1px solid var(--border-chrome);
  border-radius: 6px;
}

.sku-purity-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
}

.sku-purity-value {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: #5ce67a;
  letter-spacing: 0.01em;
}

.sku-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.sku-cta-shop {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--chrome-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: letter-spacing var(--transition);
}

.sku-card:hover .sku-cta-shop {
  letter-spacing: 0.03em;
}

.sku-cta-research {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: color var(--transition);
}

.sku-cta-research:hover {
  color: var(--accent);
}

.sku-ruo {
  margin-top: 20px;
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
  opacity: 0.7;
}

.sku-footnote {
  margin-top: 28px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.sku-footnote a {
  color: var(--accent);
  font-weight: 500;
  transition: color var(--transition);
}

.sku-footnote a:hover {
  color: var(--accent-bright);
}

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

@media (max-width: 480px) {
  .sku-grid {
    grid-template-columns: 1fr;
  }
}

/* === FOOTER === */
.footer {
  padding: 60px 40px 40px;
  border-top: 1px solid var(--border-chrome);
  background: #050505;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--accent-bright);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand .brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid rgba(192, 192, 192, 0.15);
  background: radial-gradient(circle, #1a1a1a 0%, #0a0a0a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(192, 192, 192, 0.08), inset 0 1px 2px rgba(255,255,255,0.05);
  flex-shrink: 0;
}

.footer-brand .brand-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.footer-brand .brand-mark {
  width: 32px;
  height: 32px;
  background: var(--chrome-gradient);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-size: 0.75rem;
  font-weight: 700;
}

.footer-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 300px;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border-chrome);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-badge {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 6px 14px;
  background: var(--surface);
  border: 1px solid var(--border-chrome);
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--chrome-gradient);
  border-radius: 50%;
}

/* === PAGE STUB === */
.page-stub {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 140px 40px 100px;
  text-align: center;
}

.page-stub .stub-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 32px;
  font-size: 2rem;
  background: var(--surface);
  border: 1px solid var(--border-chrome);
  color: var(--accent);
}

.page-stub h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 16px;
  color: var(--text);
}

.page-stub p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 480px;
  line-height: 1.7;
  margin-bottom: 32px;
}

.page-stub .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--surface);
  border: 1px solid var(--border-chrome);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.page-stub .badge .pulse {
  width: 8px;
  height: 8px;
  background: var(--chrome-gradient);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* === COMING SOON TAG === */
.coming-soon-tag {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--amber);
  background: var(--amber-light);
  padding: 3px 8px;
  border-radius: 4px;
  margin-left: 6px;
}

/* === CHROME DIVIDER === */
.chrome-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  margin: 0 auto;
  width: 80%;
  max-width: 600px;
  opacity: 0.3;
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .compounds-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav {
    padding: 0 20px;
    height: 64px;
  }

  .nav-links { display: none; }
  .nav-toggle { display: block; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.98);
    backdrop-filter: blur(20px);
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--border-chrome);
    box-shadow: 0 8px 32px rgba(0,0,0,0.8);
  }

  /* Ensure nav-auth is visible and touch-friendly on mobile */
  .nav-auth {
    display: flex;
    align-items: center;
    flex-shrink: 0;
  }

  .nav-auth-btn {
    font-size: 0.85rem;
    font-weight: 600;
    color: #000;
    background: linear-gradient(135deg, #888 0%, #e0e0e0 50%, #a0a0a0 100%);
    padding: 8px 16px;
    border-radius: 8px;
    text-decoration: none;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    touch-action: manipulation;
  }

  .nav-auth-btn:hover {
    opacity: 0.88;
  }

  .hero {
    padding: 120px 24px 80px;
    min-height: auto;
  }

  .hero h1 {
    letter-spacing: -1px;
  }

  .section {
    padding: 60px 24px;
  }

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

  .coa-section {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .compounds-grid,
  .compounds-grid-wide {
    grid-template-columns: 1fr;
  }

  .cta-band {
    padding: 60px 24px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .hero-scroll { display: none; }
}

@media (max-width: 480px) {
  .hero {
    padding: 100px 16px 60px;
  }

  .section {
    padding: 48px 16px;
  }

  .trust-card {
    padding: 32px 24px;
  }

  .coa-cards {
    grid-template-columns: 1fr;
  }

  .btn {
    padding: 12px 22px;
    font-size: 0.9rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    text-align: center;
    justify-content: center;
  }
}

/* === SUBSCRIBE BANNER === */
.subscribe-banner {
  background: var(--surface);
  border: 1px solid var(--border-chrome);
  border-radius: var(--radius);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin: 0 40px 0;
  box-shadow: var(--shadow-chrome);
}

.subscribe-banner-text {
  flex: 1;
  min-width: 200px;
}

.subscribe-banner-text p {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 2px;
  letter-spacing: 0.3px;
}

.subscribe-banner-text span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.subscribe-form-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.subscribe-input {
  background: var(--bg);
  border: 1px solid var(--border-chrome);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 10px 16px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 220px;
}

.subscribe-input::placeholder {
  color: var(--text-muted);
}

.subscribe-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(192, 192, 192, 0.12);
}

.subscribe-btn {
  background: var(--chrome-gradient);
  color: #000;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.subscribe-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 0 16px rgba(192, 192, 192, 0.3);
  filter: brightness(1.1);
}

.subscribe-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.subscribe-msg {
  font-size: 0.82rem;
  margin-top: 6px;
  width: 100%;
  height: 1em;
}

.subscribe-msg--success { color: #6ee7b7; }
.subscribe-msg--error   { color: #f87171; }

/* Banner variant for research-library (between filters and grid) */
.subscribe-section-banner {
  background: var(--surface);
  border: 1px solid var(--border-chrome);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 40px;
  display: flex;
  align-items: flex-start;
  gap: 24px;
  flex-wrap: wrap;
}

.subscribe-section-banner .subscribe-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent-dim);
  margin-bottom: 6px;
}

.subscribe-section-banner h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-bright);
  margin-bottom: 4px;
}

.subscribe-section-banner p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Footer signup strip */
.footer-subscribe {
  border-top: 1px solid var(--border-chrome);
  padding: 24px 40px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  background: var(--bg-darker);
}

.footer-subscribe p {
  font-size: 0.85rem;
  color: var(--text-muted);
  flex: 1;
  min-width: 180px;
}

.footer-subscribe p strong {
  color: var(--accent);
  font-weight: 600;
}

@media (max-width: 768px) {
  .subscribe-banner {
    margin: 0 20px;
    padding: 20px;
  }

  .subscribe-input {
    width: 100%;
  }

  .subscribe-form-row {
    width: 100%;
  }

  .subscribe-btn {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .footer-subscribe {
    padding: 20px;
    flex-direction: column;
    align-items: flex-start;
  }
}

/* === HERO EMAIL CAPTURE === */
.hero-email-capture {
  margin-top: 32px;
  padding: 20px 24px;
  background: rgba(201, 168, 76, 0.06);
  border: 1px solid rgba(201, 168, 76, 0.2);
  border-radius: 12px;
  max-width: 520px;
}

.hero-email-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.3px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.hero-email-form {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.hero-email-input {
  flex: 1;
  min-width: 180px;
}

.hero-email-ruo {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 8px;
  opacity: 0.7;
}

.hero-email-form .subscribe-msg {
  width: 100%;
  margin-top: 4px;
}

/* PCAC variant — stronger border + urgency row */
.hero-email-capture--pcac {
  border-color: rgba(220, 80, 80, 0.3);
  background: rgba(220, 60, 60, 0.06);
}

.hero-email-urgency-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.hero-email-urgency-badge {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: #f87171;
  background: rgba(220, 38, 38, 0.15);
  border: 1px solid rgba(220, 38, 38, 0.25);
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.hero-email-urgency-countdown {
  font-size: 0.75rem;
  font-weight: 600;
  color: #fca5a5;
}

.hero-email-btn {
  background: linear-gradient(135deg, #c9a84c, #e8c87a);
  font-size: 0.82rem;
  white-space: nowrap;
}

/* PCAC subscribe banner variant */
.subscribe-banner--pcac {
  border-color: rgba(220, 80, 80, 0.25);
  background: rgba(220, 50, 50, 0.05);
}

.subscribe-banner--pcac .subscribe-banner-text p {
  color: #fca5a5;
}

/* === PCAC URGENCY BAR === */
.pcac-urgency-bar {
  background: rgba(220, 38, 38, 0.08);
  border-bottom: 1px solid rgba(220, 38, 38, 0.2);
}

.pcac-urgency-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 40px;
  text-decoration: none;
  flex-wrap: wrap;
  transition: background 0.2s;
}

.pcac-urgency-inner:hover {
  background: rgba(220, 38, 38, 0.12);
}

.pcac-urgency-badge {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: #f87171;
  white-space: nowrap;
  background: rgba(220, 38, 38, 0.15);
  padding: 3px 8px;
  border-radius: 4px;
}

.pcac-urgency-text {
  font-size: 0.83rem;
  color: #e0e0e0;
  flex: 1;
}

.pcac-urgency-text strong {
  color: #fca5a5;
}

.pcac-urgency-cta {
  font-size: 0.8rem;
  font-weight: 600;
  color: #f87171;
  white-space: nowrap;
}

@media (max-width: 768px) {
  .hero-email-capture {
    margin-top: 24px;
  }
  .pcac-urgency-inner {
    padding: 10px 20px;
  }
}