/* ============================================================
   EXOSOME KOREA — DESIGN SYSTEM
   Premium Medical Aesthetics · Korean Biotech · Luxury Editorial
   ============================================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=Inter:wght@300;400;500;600;700&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Background */
  --bg-warm-white: #FAFAF8;
  --bg-pearl:       #F5F4F0;
  --bg-cool-gray:   #F0F0EF;
  --bg-dark:        #1A1A1A;

  /* Text */
  --text-charcoal:  #1E1E1E;
  --text-slate:     #5C5C5C;
  --text-muted:     #8A8A8A;
  --text-white:     #FFFFFF;

  /* Accents */
  --accent-green:        #6B8C6B;   /* Plant-Based */
  --accent-green-light:  #EBF0EB;
  --accent-green-mid:    #C8D8C8;
  --accent-rose:         #8C5C6B;   /* Human-Derived */
  --accent-rose-light:   #F0EBEd;
  --accent-rose-mid:     #D8C0C8;

  /* CTA / Brand */
  --cta-dark:       #1E2E1E;
  --cta-hover:      #2E4A2E;
  --border-light:   #E8E6E0;
  --border-mid:     #D4D0C8;

  /* Typography */
  --font-serif:  'Cormorant Garamond', Georgia, serif;
  --font-sans:   'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   1.5rem;
  --space-lg:   2.5rem;
  --space-xl:   4rem;
  --space-xxl:  7rem;

  /* Layout */
  --max-width:    1240px;
  --nav-height:   72px;
  --radius-sm:    4px;
  --radius-md:    8px;
  --radius-lg:    16px;

  /* Transitions */
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition: 0.3s var(--ease);
}

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

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

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

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

img {
  max-width: 100%;
  display: block;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ============================================================
   TYPOGRAPHY SCALE
   ============================================================ */
.t-hero {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--text-charcoal);
}

.t-h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 3.5vw, 3rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-charcoal);
}

.t-h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 400;
  line-height: 1.25;
  color: var(--text-charcoal);
}

.t-h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  font-weight: 500;
  line-height: 1.3;
  color: var(--text-charcoal);
}

.t-label {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.t-body {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-slate);
}

.t-body-sm {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: var(--space-xxl) 0;
}

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

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

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

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

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

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

.text-center {
  text-align: center;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.site-nav.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-logo-main {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-charcoal);
  line-height: 1;
}

.nav-logo-sub {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-slate);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  display: flex;
  align-items: center;
  gap: 0.3rem;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-charcoal);
  background: var(--bg-cool-gray);
}

.nav-link .chevron {
  width: 10px;
  height: 10px;
  transition: transform var(--transition);
}

.nav-item:hover .chevron {
  transform: rotate(180deg);
}

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 200px;
  background: var(--bg-warm-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(0,0,0,0.10);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown a {
  display: block;
  padding: 0.55rem 1rem;
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--text-slate);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-dropdown a:hover {
  background: var(--bg-cool-gray);
  color: var(--text-charcoal);
}

.nav-dropdown .dropdown-divider {
  height: 1px;
  background: var(--border-light);
  margin: 0.4rem 0.5rem;
}

.nav-cta {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-white) !important;
  background: var(--cta-dark) !important;
  padding: 0.55rem 1.2rem !important;
  border-radius: var(--radius-sm);
  transition: background var(--transition) !important;
}

.nav-cta:hover {
  background: var(--cta-hover) !important;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-charcoal);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================================
   BADGES & TAGS
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.badge--plant {
  background: var(--accent-green-light);
  color: var(--accent-green);
  border: 1px solid var(--accent-green-mid);
}

.badge--human {
  background: var(--accent-rose-light);
  color: var(--accent-rose);
  border: 1px solid var(--accent-rose-mid);
}

.badge--skin {
  background: var(--bg-cool-gray);
  color: var(--text-slate);
  border: 1px solid var(--border-mid);
}

.badge--hair {
  background: #F0EDE8;
  color: #7A6A5A;
  border: 1px solid #E0D8CF;
}

.badge--dark {
  background: var(--text-charcoal);
  color: var(--text-white);
}

.tag {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  background: var(--bg-cool-gray);
  color: var(--text-slate);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 100px;
  border: 1px solid var(--border-light);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.btn--primary {
  background: var(--cta-dark);
  color: var(--text-white);
  border: 2px solid var(--cta-dark);
}

.btn--primary:hover {
  background: var(--cta-hover);
  border-color: var(--cta-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(30, 46, 30, 0.2);
}

.btn--outline {
  background: transparent;
  color: var(--text-charcoal);
  border: 1.5px solid var(--border-mid);
}

.btn--outline:hover {
  background: var(--bg-cool-gray);
  border-color: var(--text-charcoal);
}

.btn--outline-white {
  background: transparent;
  color: var(--text-white);
  border: 1.5px solid rgba(255,255,255,0.5);
}

.btn--outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: white;
}

.btn--plant {
  background: var(--accent-green);
  color: white;
  border: 2px solid var(--accent-green);
}

.btn--plant:hover {
  background: #5A7A5A;
  border-color: #5A7A5A;
}

.btn--sm {
  padding: 0.6rem 1.2rem;
  font-size: 0.78rem;
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-header {
  margin-bottom: var(--space-xl);
}

.section-header--center {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-xl);
}

.section-eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.section-eyebrow--green {
  color: var(--accent-green);
}

.section-eyebrow--rose {
  color: var(--accent-rose);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 0.95rem;
  color: var(--text-slate);
  line-height: 1.7;
  max-width: 560px;
}

.section-header--center .section-desc {
  margin: 0 auto;
}

/* ============================================================
   PRODUCT CARDS
   ============================================================ */
.product-card {
  background: var(--bg-warm-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
  border-color: var(--border-mid);
}

.product-card__visual {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--bg-cool-gray) 0%, var(--bg-pearl) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 2rem;
}

.product-card__visual--plant {
  background: linear-gradient(135deg, var(--accent-green-light) 0%, var(--bg-cool-gray) 100%);
}

.product-card__visual--human {
  background: linear-gradient(135deg, var(--accent-rose-light) 0%, var(--bg-cool-gray) 100%);
}

.product-card__icon {
  font-size: 3rem;
  opacity: 0.6;
}

.product-card__body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.product-card__badges {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.product-card__name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--text-charcoal);
}

.product-card__desc {
  font-size: 0.83rem;
  color: var(--text-slate);
  line-height: 1.6;
  flex: 1;
}

.product-card__tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.product-card__cta {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-charcoal);
  margin-top: 0.5rem;
  transition: gap var(--transition);
}

.product-card:hover .product-card__cta {
  gap: 0.7rem;
}

/* ============================================================
   CATEGORY CARDS
   ============================================================ */
.category-card {
  position: relative;
  background: var(--bg-warm-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  overflow: hidden;
  transition: all var(--transition);
}

.category-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.09);
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--border-mid);
  transition: background var(--transition);
}

.category-card--skin::before {
  background: linear-gradient(90deg, var(--accent-green), var(--accent-rose));
}

.category-card--hair::before {
  background: linear-gradient(90deg, var(--accent-green), #B8A090);
}

.category-card__number {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 300;
  color: var(--border-light);
  line-height: 1;
  margin-bottom: 1.5rem;
}

.category-card__title {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 400;
  margin-bottom: 1rem;
}

.category-card__desc {
  font-size: 0.9rem;
  color: var(--text-slate);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.category-card__products {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.category-card__product-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.83rem;
  color: var(--text-slate);
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border-light);
}

.category-card__product-item:last-child {
  border-bottom: none;
}

/* ============================================================
   SOURCE TYPE CARDS
   ============================================================ */
.source-card {
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}

.source-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

.source-card--plant {
  background: var(--accent-green-light);
  border: 1.5px solid var(--accent-green-mid);
}

.source-card--human {
  background: var(--accent-rose-light);
  border: 1.5px solid var(--accent-rose-mid);
}

.source-card__icon {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
  display: block;
}

.source-card__title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.source-card--plant .source-card__title { color: var(--accent-green); }
.source-card--human .source-card__title { color: var(--accent-rose); }

.source-card__desc {
  font-size: 0.88rem;
  color: var(--text-slate);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.source-card__note {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.6;
  padding: 0.75rem;
  background: rgba(255,255,255,0.6);
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
}

/* ============================================================
   SCIENCE / EDITORIAL BLOCKS
   ============================================================ */
.science-block {
  background: var(--bg-pearl);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 3rem;
  position: relative;
}

.science-block__quote {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-style: italic;
  line-height: 1.5;
  color: var(--text-charcoal);
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
  border-left: 3px solid var(--accent-green);
}

.info-card {
  background: var(--bg-warm-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
}

.info-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.07);
}

.info-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-cool-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.info-card__title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 0.6rem;
}

.info-card__desc {
  font-size: 0.85rem;
  color: var(--text-slate);
  line-height: 1.65;
}

/* ============================================================
   FAQ ACCORDION
   ============================================================ */
.faq-list {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.faq-item:last-child {
  border-bottom: none;
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 1.75rem;
  background: var(--bg-warm-white);
  cursor: pointer;
  transition: background var(--transition);
  gap: 1rem;
  text-align: left;
}

.faq-trigger:hover {
  background: var(--bg-cool-gray);
}

.faq-trigger.open {
  background: var(--bg-pearl);
}

.faq-question {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-charcoal);
  line-height: 1.4;
}

.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-cool-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 300;
  color: var(--text-slate);
  flex-shrink: 0;
  transition: all var(--transition);
}

.faq-trigger.open .faq-icon {
  background: var(--text-charcoal);
  color: white;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease);
}

.faq-answer.open {
  max-height: 400px;
}

.faq-answer-inner {
  padding: 0 1.75rem 1.5rem;
  font-size: 0.88rem;
  color: var(--text-slate);
  line-height: 1.7;
  background: var(--bg-pearl);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  min-height: 100vh;
  padding-top: var(--nav-height);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(107, 140, 107, 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 60% 80% at 30% 80%, rgba(140, 92, 107, 0.04) 0%, transparent 70%);
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-light) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.4;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xxl) 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-left {
  max-width: 560px;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.hero-eyebrow-line {
  width: 32px;
  height: 1px;
  background: var(--accent-green);
}

.hero-eyebrow-text {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-green);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
}

.hero-title em {
  font-style: italic;
  color: var(--accent-green);
}

.hero-desc {
  font-size: 1rem;
  color: var(--text-slate);
  line-height: 1.75;
  margin-bottom: 2.5rem;
  max-width: 480px;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-right {
  position: relative;
}

.hero-visual {
  position: relative;
  height: 520px;
}

.hero-visual-orb {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(107,140,107,0.12) 0%, transparent 70%);
  animation: pulse 6s ease-in-out infinite;
}

.hero-visual-orb:nth-child(1) {
  width: 360px;
  height: 360px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.hero-visual-orb:nth-child(2) {
  width: 240px;
  height: 240px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(140,92,107,0.08) 0%, transparent 70%);
  animation-delay: -3s;
}

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

.hero-visual-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 280px;
  height: 280px;
  border-radius: 50%;
  border: 1px solid rgba(107,140,107,0.2);
  animation: rotate 30s linear infinite;
}

.hero-visual-ring:nth-child(3) {
  width: 380px;
  height: 380px;
  border-color: rgba(107,140,107,0.1);
  animation-direction: reverse;
  animation-duration: 45s;
}

@keyframes rotate {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero-center-mark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--bg-warm-white);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.3;
}

.hero-floating-tag {
  position: absolute;
  background: var(--bg-warm-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 0.65rem 1rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-charcoal);
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: float 4s ease-in-out infinite;
}

.hero-floating-tag:nth-child(5) { top: 10%;  left: 10%;  animation-delay: 0s; }
.hero-floating-tag:nth-child(6) { top: 20%;  right: 5%;  animation-delay: -1s; }
.hero-floating-tag:nth-child(7) { bottom: 25%; left: 5%; animation-delay: -2s; }
.hero-floating-tag:nth-child(8) { bottom: 12%; right: 8%;animation-delay: -3s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

.hero-floating-tag .tag-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.tag-dot--green { background: var(--accent-green); }
.tag-dot--rose  { background: var(--accent-rose); }
.tag-dot--gray  { background: var(--text-muted); }

/* ============================================================
   COMPARISON SECTION
   ============================================================ */
.comparison-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.comparison-col {
  padding: 2.5rem;
}

.comparison-col--plant {
  background: var(--accent-green-light);
  border-right: 1px solid var(--accent-green-mid);
}

.comparison-col--human {
  background: var(--accent-rose-light);
}

.comparison-col__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.comparison-col__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.comparison-col--plant .comparison-col__dot { background: var(--accent-green); }
.comparison-col--human .comparison-col__dot { background: var(--accent-rose); }

.comparison-col__label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.comparison-col--plant .comparison-col__label { color: var(--accent-green); }
.comparison-col--human .comparison-col__label { color: var(--accent-rose); }

.comparison-col__title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.comparison-col__list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.comparison-col__list li {
  font-size: 0.85rem;
  color: var(--text-slate);
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  line-height: 1.5;
}

.comparison-col__list li::before {
  content: '—';
  color: var(--text-muted);
  flex-shrink: 0;
  margin-top: 0.05em;
}

.comparison-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.6;
  padding: 0.75rem;
  background: rgba(255,255,255,0.5);
  border-radius: var(--radius-sm);
}

/* ============================================================
   FULL-WIDTH CTA BANNER
   ============================================================ */
.cta-banner {
  background: var(--cta-dark);
  padding: var(--space-xl) 0;
  text-align: center;
}

.cta-banner__eyebrow {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 1rem;
}

.cta-banner__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  font-weight: 400;
  color: var(--text-white);
  margin-bottom: 0.75rem;
  line-height: 1.25;
}

.cta-banner__desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  max-width: 520px;
  margin: 0 auto 2rem;
  line-height: 1.65;
}

.cta-banner__buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   PAGE HERO (inner pages)
   ============================================================ */
.page-hero {
  padding: calc(var(--nav-height) + 4rem) 0 4rem;
  background: var(--bg-pearl);
  border-bottom: 1px solid var(--border-light);
}

.page-hero__eyebrow {
  margin-bottom: 1rem;
}

.page-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  max-width: 700px;
}

.page-hero__desc {
  font-size: 1rem;
  color: var(--text-slate);
  line-height: 1.75;
  max-width: 580px;
}

.page-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.page-hero__breadcrumb a,
.page-hero__breadcrumb span {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 400;
}

.page-hero__breadcrumb a:hover {
  color: var(--text-slate);
}

.page-hero__breadcrumb .sep {
  color: var(--border-mid);
}

/* ============================================================
   SIDEBAR FILTER
   ============================================================ */
.filter-sidebar {
  width: 240px;
  flex-shrink: 0;
}

.filter-group {
  margin-bottom: 2rem;
}

.filter-group__title {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.45rem 0;
  cursor: pointer;
  transition: color var(--transition);
}

.filter-option input {
  accent-color: var(--cta-dark);
}

.filter-option label {
  font-size: 0.85rem;
  color: var(--text-slate);
  cursor: pointer;
}

.filter-option:hover label {
  color: var(--text-charcoal);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.75);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand__logo {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 500;
  color: white;
  margin-bottom: 0.5rem;
}

.footer-brand__sub {
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 1.25rem;
}

.footer-brand__desc {
  font-size: 0.83rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.5);
  max-width: 280px;
}

.footer-disclaimer {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
  line-height: 1.6;
  padding: 1.5rem 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 1.5rem;
}

.footer-col__title {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1rem;
}

.footer-col__links {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-col__links a {
  font-size: 0.84rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}

.footer-col__links a:hover {
  color: white;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.3);
}

/* ============================================================
   SCROLL TO TOP
   ============================================================ */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--cta-dark);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 900;
  font-size: 1.1rem;
  border: none;
}

.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--cta-hover);
}

/* ============================================================
   DIVIDER
   ============================================================ */
.divider {
  width: 40px;
  height: 1px;
  background: var(--border-mid);
  margin: 1rem 0;
}

.divider--center {
  margin: 1rem auto;
}

/* ============================================================
   PRODUCT PAGE SPECIFIC
   ============================================================ */
.product-hero {
  padding: calc(var(--nav-height) + 3rem) 0 3rem;
  background: var(--bg-pearl);
}

.product-hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.product-visual-box {
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
}

.product-visual-box--plant {
  background: linear-gradient(135deg, var(--accent-green-light), var(--bg-cool-gray));
  border: 1px solid var(--accent-green-mid);
}

.product-visual-box--human {
  background: linear-gradient(135deg, var(--accent-rose-light), var(--bg-cool-gray));
  border: 1px solid var(--accent-rose-mid);
}

.product-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}

.product-meta-item {
  background: var(--bg-warm-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
}

.product-meta-item__label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.product-meta-item__value {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-charcoal);
}

.highlights-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.highlight-item {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  padding: 1rem 1.25rem;
  background: var(--bg-warm-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.highlight-item:hover {
  border-color: var(--border-mid);
  box-shadow: 0 4px 12px rgba(0,0,0,0.04);
}

.highlight-item__icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.highlight-item__text {
  font-size: 0.87rem;
  color: var(--text-slate);
  line-height: 1.6;
}

/* ============================================================
   MOBILE NAV PANEL
   ============================================================ */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-warm-white);
  z-index: 999;
  overflow-y: auto;
  padding: 1.5rem;
}

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

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-nav-links a {
  display: block;
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-slate);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.mobile-nav-links a:hover {
  background: var(--bg-cool-gray);
  color: var(--text-charcoal);
}

.mobile-nav-section {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}

.mobile-nav-section__title {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.5rem 1rem;
}

/* ============================================================
   PILLAR PAGE
   ============================================================ */
.pillar-intro {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.content-body {
  max-width: 720px;
  margin: 0 auto;
}

.content-body h2 {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 400;
  margin: 2.5rem 0 1rem;
  color: var(--text-charcoal);
}

.content-body h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 500;
  margin: 2rem 0 0.75rem;
  color: var(--text-charcoal);
}

.content-body p {
  font-size: 0.93rem;
  color: var(--text-slate);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.content-body ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.content-body ul li {
  font-size: 0.93rem;
  color: var(--text-slate);
  line-height: 1.75;
  margin-bottom: 0.4rem;
}

.callout-box {
  background: var(--bg-cool-gray);
  border-left: 3px solid var(--accent-green);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  font-size: 0.88rem;
  color: var(--text-slate);
  line-height: 1.7;
}

.callout-box--caution {
  border-color: var(--accent-rose);
  background: var(--accent-rose-light);
}

/* ============================================================
   CONTACT / WHOLESALE FORM
   ============================================================ */
.contact-form {
  background: var(--bg-warm-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-slate);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text-charcoal);
  background: var(--bg-cool-gray);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  outline: none;
  appearance: none;
}

.form-control:focus {
  border-color: var(--accent-green);
  background: var(--bg-warm-white);
  box-shadow: 0 0 0 3px rgba(107,140,107,0.1);
}

textarea.form-control {
  min-height: 140px;
  resize: vertical;
}

select.form-control {
  cursor: pointer;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-fadeup {
  animation: fadeUp 0.6s var(--ease) both;
}

.animate-fadeup-delay-1 { animation-delay: 0.1s; }
.animate-fadeup-delay-2 { animation-delay: 0.2s; }
.animate-fadeup-delay-3 { animation-delay: 0.3s; }
.animate-fadeup-delay-4 { animation-delay: 0.4s; }

/* ============================================================
   RESPONSIVE — TABLET
   ============================================================ */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-inner { grid-template-columns: 1fr; gap: 2rem; }
  .hero-right { display: none; }
  .hero-left { max-width: 100%; }
  .product-hero__grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .comparison-panel { grid-template-columns: 1fr; }
  .comparison-col--plant { border-right: none; border-bottom: 1px solid var(--accent-green-mid); }
}

/* ============================================================
   RESPONSIVE — MOBILE
   ============================================================ */
@media (max-width: 640px) {
  :root { --space-xxl: 4rem; }

  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .container { padding: 0 1.25rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .section { padding: 3rem 0; }
  .cta-banner__buttons { flex-direction: column; align-items: center; }
  .product-meta-grid { grid-template-columns: 1fr 1fr; }
  .science-block { padding: 2rem 1.5rem; }
}