:root {
  --bg: #faf8f4;
  --bg-alt: #f2ede6;
  --fg: #1a1a18;
  --fg-muted: #6b6560;
  --accent: #1d5c3e;
  --accent-light: #2a7a54;
  --accent-warm: #c9893a;
  --accent-warm-light: #e5a84b;
  --border: #e2dbd3;
  --surface: #ffffff;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 248, 244, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  font-family: 'Fraunces', serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.5px;
}
.nav__logo--link {
  text-decoration: none;
  color: var(--fg);
}
.nav__links {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-right: auto;
  margin-left: 24px;
}
.nav__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--fg-muted);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}
.nav__link:hover {
  color: var(--fg);
  background: rgba(0,0,0,0.05);
}
.nav__link--active {
  color: var(--accent);
  font-weight: 600;
}
.nav__badge {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(29, 92, 62, 0.08);
  border: 1px solid rgba(29, 92, 62, 0.2);
  border-radius: 20px;
  padding: 4px 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* Section eyebrow */
.section__eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

/* Hero */
.hero {
  padding: 80px 32px 100px;
  background: var(--bg);
}
.hero__inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero__eyebrow {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero__headline {
  font-family: 'Fraunces', serif;
  font-size: clamp(36px, 4.5vw, 60px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -2px;
  color: var(--fg);
  margin-bottom: 24px;
}
.hero__headline em {
  font-style: italic;
  color: var(--accent-warm);
}
.hero__lede {
  font-size: 18px;
  color: var(--fg-muted);
  line-height: 1.65;
  max-width: 480px;
  margin-bottom: 32px;
}
.hero__pillars {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.hero__pillars span {
  font-size: 13px;
  font-weight: 500;
  color: var(--fg-muted);
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
}
.hero__visual {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.hero__product {
  background: var(--accent);
  border-radius: 24px;
  padding: 48px 40px;
  text-align: center;
  color: white;
}
.hero__product-label {
  font-family: 'Fraunces', serif;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 8px;
}
.hero__product-detail {
  font-size: 14px;
  opacity: 0.75;
  letter-spacing: 1px;
}
.hero__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.hero__stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 20px;
  text-align: center;
}
.hero__stat-num {
  display: block;
  font-family: 'Fraunces', serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--accent-warm);
  letter-spacing: -1px;
  margin-bottom: 6px;
}
.hero__stat-label {
  display: block;
  font-size: 12px;
  color: var(--fg-muted);
  line-height: 1.4;
}

/* Problem */
.problem {
  background: var(--fg);
  color: white;
  padding: 100px 32px;
}
.problem__inner { max-width: 1100px; margin: 0 auto; }
.problem .section__eyebrow { color: var(--accent-warm-light); }
.problem__headline {
  font-family: 'Fraunces', serif;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: 1.15;
  margin-bottom: 24px;
}
.problem__body {
  font-size: 18px;
  color: rgba(255,255,255,0.7);
  max-width: 560px;
  margin-bottom: 64px;
  line-height: 1.65;
}
.problem__numbers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  overflow: hidden;
}
.problem__num {
  padding: 40px 32px;
  background: rgba(255,255,255,0.04);
  text-align: center;
}
.problem__num-val {
  display: block;
  font-family: 'Fraunces', serif;
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 700;
  color: var(--accent-warm-light);
  letter-spacing: -2px;
  margin-bottom: 8px;
}
.problem__num-desc {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 1.4;
}

/* Mechanism */
.mechanism {
  padding: 100px 32px;
  background: var(--bg);
}
.mechanism__inner { max-width: 1100px; margin: 0 auto; }
.mechanism__headline {
  font-family: 'Fraunces', serif;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: 1.15;
  margin-bottom: 16px;
}
.mechanism__sub {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 560px;
  margin-bottom: 56px;
  line-height: 1.65;
}
.mechanism__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}
.mechanism__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 20px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.mechanism__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}
.mechanism__step {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-warm);
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.mechanism__card-title {
  font-family: 'Fraunces', serif;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: -0.3px;
}
.mechanism__card-path {
  font-size: 12px;
  color: var(--accent);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}
.mechanism__card-desc {
  font-size: 13px;
  color: var(--fg-muted);
  line-height: 1.5;
}
.mechanism__total {
  background: var(--accent);
  color: white;
  border-radius: 12px;
  padding: 20px 28px;
  font-size: 15px;
  text-align: center;
}
.mechanism__total span {
  font-family: 'Fraunces', serif;
  font-weight: 700;
  font-size: 22px;
  margin-right: 12px;
}

/* Formula */
.formula {
  padding: 100px 32px;
  background: var(--bg-alt);
}
.formula__inner { max-width: 1100px; margin: 0 auto; }
.formula__headline {
  font-family: 'Fraunces', serif;
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: 16px;
}
.formula__sub {
  font-size: 17px;
  color: var(--fg-muted);
  max-width: 540px;
  margin-bottom: 48px;
  line-height: 1.65;
}
.formula__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 32px;
}
.formula__item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
}
.formula__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  color: var(--accent);
}
.formula__icon svg { width: 100%; height: 100%; }
.formula__item-name {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 4px;
}
.formula__item-role {
  font-size: 13px;
  color: var(--fg-muted);
}
.formula__plus {
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: 14px;
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.formula__plus-label {
  font-family: 'Fraunces', serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}
.formula__plus-dose {
  font-size: 14px;
  font-weight: 600;
  color: var(--fg);
}
.formula__plus-features {
  font-size: 13px;
  color: var(--fg-muted);
}

/* Results */
.results {
  padding: 100px 32px;
  background: var(--bg);
}
.results__inner { max-width: 1100px; margin: 0 auto; }
.results__headline {
  font-family: 'Fraunces', serif;
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: 12px;
}
.results__sub {
  font-size: 17px;
  color: var(--fg-muted);
  max-width: 540px;
  margin-bottom: 48px;
  line-height: 1.65;
}
.results__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 56px;
}
.results__metric {
  background: var(--accent);
  color: white;
  border-radius: 16px;
  padding: 32px 28px;
  text-align: center;
}
.results__metric-value {
  font-family: 'Fraunces', serif;
  font-size: clamp(36px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -2px;
  color: var(--accent-warm-light);
  margin-bottom: 8px;
}
.results__metric-label {
  font-size: 14px;
  opacity: 0.8;
  line-height: 1.4;
}
.results__table-wrap {
  overflow-x: auto;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.results__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.results__table th {
  background: var(--fg);
  color: white;
  padding: 16px 20px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
}
.results__table th:not(:first-child) { text-align: center; }
.results__table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  color: var(--fg-muted);
}
.results__table td:not(:first-child) { text-align: center; }
.results__table tr:last-child td { border-bottom: none; }
.results__table tr:nth-child(even) td { background: rgba(0,0,0,0.02); }
.check { color: var(--accent); font-size: 18px; font-weight: bold; }
.cross { color: #c0392b; font-size: 18px; font-weight: bold; }
.partial { color: var(--fg-muted); font-size: 12px; font-style: italic; }
.results__disclaimer {
  font-size: 11px;
  color: var(--fg-muted);
  margin-top: 20px;
  font-style: italic;
}

/* Closing */
.closing {
  padding: 100px 32px;
  background: var(--fg);
  color: white;
  text-align: center;
}
.closing__inner { max-width: 700px; margin: 0 auto; }
.closing__badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-warm-light);
  border: 1px solid rgba(229, 168, 75, 0.3);
  border-radius: 24px;
  padding: 8px 20px;
  margin-bottom: 32px;
}
.closing__headline {
  font-family: 'Fraunces', serif;
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: 1.2;
  margin-bottom: 20px;
}
.closing__body {
  font-size: 18px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 48px;
}
.closing__certifications {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}
.closing__certifications span {
  font-size: 12px;
  font-weight: 500;
  color: rgba(255,255,255,0.5);
  padding: 6px 16px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 24px;
}

/* Footer */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 48px 32px;
}
.footer__inner { max-width: 1100px; margin: 0 auto; }
.footer__brand { margin-bottom: 24px; }
.footer__logo {
  font-family: 'Fraunces', serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--fg);
  display: block;
  margin-bottom: 8px;
}
.footer__tagline {
  font-size: 14px;
  color: var(--fg-muted);
  max-width: 380px;
}
.footer__meta { border-top: 1px solid var(--border); padding-top: 20px; }
.footer__disclaimer {
  font-size: 11px;
  color: var(--fg-muted);
  font-style: italic;
  line-height: 1.5;
}

/* Responsive */
@media (max-width: 768px) {
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .hero__visual { order: -1; }
  .mechanism__grid { grid-template-columns: 1fr 1fr; }
  .problem__numbers { grid-template-columns: 1fr; }
  .results__metrics { grid-template-columns: 1fr; }
  .formula__grid { grid-template-columns: 1fr; }
  .hero { padding: 60px 24px 80px; }
  .problem, .mechanism, .formula, .results, .closing { padding: 72px 24px; }
  .nav__inner { padding: 14px 24px; }
  .mechanism__grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero__stats { grid-template-columns: 1fr; }
  .hero__pillars { gap: 10px; }
  .mechanism__grid { grid-template-columns: 1fr; }
}
/* Signup CTA button */
.btn-signup {
  display: inline-block;
  padding: 14px 32px;
  background: #c8f542;
  color: #0a1f0a;
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}
.btn-signup:hover {
  background: #d9f55e;
  transform: translateY(-1px);
}
.btn-signup:active {
  transform: translateY(0);
}