:root {
  --bg: #FDFAF5;
  --bg-warm: #F5EFE4;
  --bg-dark: #1A1612;
  --fg: #2C2419;
  --fg-light: #6B5D4F;
  --accent: #1B7A6E;
  --accent-light: #E6F5F2;
  --accent-glow: #22D4B8;
  --bpc: #D4763A;
  --tb: #3A6DD4;
  --ghk: #8B5CF6;
  --radius: 16px;
  --radius-sm: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* NAV */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(253, 250, 245, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(44, 36, 25, 0.06);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
}
.logo-pup { color: var(--accent); }
.logo-tides { color: var(--fg); }
.logo-co { color: var(--fg-light); font-weight: 600; font-size: 0.85em; margin-left: 2px; }
.nav-links { display: flex; gap: 28px; }
.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--fg-light);
  cursor: default;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--fg); }

/* HERO */
.hero {
  padding: 140px 32px 80px;
  position: relative;
  background: linear-gradient(165deg, var(--bg) 0%, var(--bg-warm) 50%, var(--accent-light) 100%);
}
.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero-headline {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.1;
  color: var(--fg);
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--fg-light);
  max-width: 520px;
}
.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-left: 20px;
}
.hero-card {
  background: white;
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: 0 4px 24px rgba(27, 122, 110, 0.08), 0 1px 3px rgba(0,0,0,0.04);
  border: 1px solid rgba(27, 122, 110, 0.1);
  transform: rotate(2deg);
  transition: transform 0.3s;
}
.hero-card:hover { transform: rotate(0deg) scale(1.02); }
.hero-card-alt {
  transform: rotate(-1.5deg);
  margin-left: 30px;
}
.hero-card-alt:hover { transform: rotate(0deg) scale(1.02); }
.hero-card-icon { font-size: 1.6rem; margin-bottom: 12px; }
.hero-card-stat {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 2.4rem;
  color: var(--accent);
  letter-spacing: -0.03em;
}
.hero-card-label {
  font-size: 0.85rem;
  color: var(--fg-light);
  font-weight: 500;
}
.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--bg);
  clip-path: ellipse(55% 100% at 50% 100%);
}

/* SECTIONS */
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}
.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-headline {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--fg);
  margin-bottom: 16px;
}
.section-sub {
  font-size: 1.05rem;
  color: var(--fg-light);
  max-width: 600px;
  line-height: 1.7;
}

/* PEPTIDES */
.peptides {
  padding: 100px 0;
}
.peptide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.peptide-card {
  background: white;
  border-radius: var(--radius);
  padding: 36px 32px;
  border: 1px solid rgba(44, 36, 25, 0.06);
  box-shadow: 0 2px 12px rgba(0,0,0,0.03);
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}
.peptide-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.06);
}
.peptide-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}
.peptide-bpc::before { background: var(--bpc); }
.peptide-tb::before { background: var(--tb); }
.peptide-ghk::before { background: var(--ghk); }
.peptide-number {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--fg-light);
  opacity: 0.4;
  margin-bottom: 16px;
}
.peptide-name {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.6rem;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.peptide-bpc .peptide-name { color: var(--bpc); }
.peptide-tb .peptide-name { color: var(--tb); }
.peptide-ghk .peptide-name { color: var(--ghk); }
.peptide-aka {
  font-size: 0.8rem;
  color: var(--fg-light);
  font-weight: 500;
  margin-bottom: 16px;
}
.peptide-divider {
  width: 40px;
  height: 2px;
  background: var(--bg-warm);
  margin-bottom: 16px;
}
.peptide-desc {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--fg-light);
  margin-bottom: 20px;
}
.peptide-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.peptide-tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--bg-warm);
  color: var(--fg-light);
}

/* COMMUNITY */
.community {
  padding: 100px 0;
  background: var(--bg-dark);
  color: white;
}
.community .section-label { color: var(--accent-glow); }
.community .section-headline { color: white; }
.community-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
}
.community-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.65);
  margin-bottom: 36px;
}
.community-features { display: flex; flex-direction: column; gap: 24px; }
.community-feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.cf-icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 2px; }
.cf-text strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: white;
}
.cf-text p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.6;
}
.community-visual {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.evidence-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(10px);
  transform: rotate(1deg);
  transition: transform 0.3s;
}
.evidence-card:hover { transform: rotate(0deg); }
.evidence-card-2 { transform: rotate(-1.5deg); margin-left: 24px; }
.evidence-card-2:hover { transform: rotate(0deg); }
.evidence-header { margin-bottom: 14px; }
.evidence-badge {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(34, 212, 184, 0.15);
  color: var(--accent-glow);
}
.evidence-quote {
  font-size: 0.95rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.85);
  font-style: italic;
  margin-bottom: 14px;
}
.evidence-meta {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
  font-weight: 500;
}

/* SCIENCE */
.science {
  padding: 100px 0;
}
.science-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}
.science-item {
  padding: 32px;
  background: white;
  border-radius: var(--radius);
  border: 1px solid rgba(44,36,25,0.06);
}
.science-year {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--accent);
  margin-bottom: 12px;
}
.science-item h3 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.science-item p {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--fg-light);
}

/* CLOSING */
.closing {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--bg) 0%, var(--accent-light) 100%);
}
.closing-inner {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}
.closing-headline {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--fg);
  margin-bottom: 20px;
}
.closing-text {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--fg-light);
}

/* FOOTER */
.footer {
  padding: 48px 32px;
  background: var(--bg-dark);
  text-align: center;
}
.footer-inner {
  max-width: 600px;
  margin: 0 auto;
}
.footer .logo-pup { color: var(--accent-glow); }
.footer .logo-tides { color: white; }
.footer .logo-co { color: rgba(255,255,255,0.4); }
.footer-note {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  margin-top: 8px;
  margin-bottom: 24px;
}
.footer-legal {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.25);
  line-height: 1.6;
}

/* MOBILE */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero { padding: 110px 20px 60px; }
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { padding-left: 0; }
  .hero-card { transform: rotate(0deg); }
  .hero-card-alt { margin-left: 0; transform: rotate(0deg); }
  .peptide-grid { grid-template-columns: 1fr; }
  .community-layout { grid-template-columns: 1fr; gap: 40px; }
  .science-grid { grid-template-columns: 1fr; }
  .section-inner { padding: 0 20px; }
  .evidence-card { transform: rotate(0deg); }
  .evidence-card-2 { margin-left: 0; transform: rotate(0deg); }
}