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

:root {
  --bg: #f5f4f0;
  --bg-card: #fafaf8;
  --text-primary: #0d0d0c;
  --text-secondary: #5a5a55;
  --text-tertiary: #9a9a94;
  --border: #d8d8d2;
  --border-light: #e8e8e2;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--mono);
  background: var(--bg);
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.02em;
}

/* ─── NAV ─────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 68px;
}

.nav-logo {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-primary);
  line-height: 1;
}
.nav-logo span { font-weight: 300; }
.nav-logo sup { font-size: 10px; font-weight: 400; letter-spacing: 0; vertical-align: super; }

.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-secondary);
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--text-primary); }

.nav-right { display: flex; gap: 12px; align-items: center; }

.nav-cta {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 9px 22px;
  border: 1px solid var(--text-primary);
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  font-family: var(--mono);
  transition: background 0.15s, color 0.15s;
}
.nav-cta:hover { background: var(--text-primary); color: var(--bg); }

.nav-cart {
  position: relative;
  background: none;
  border: 1px solid var(--border);
  padding: 9px 18px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  color: var(--text-primary);
  transition: background 0.15s, color 0.15s;
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-cart:hover { background: var(--text-primary); color: var(--bg); }
.cart-badge {
  background: var(--text-primary);
  color: var(--bg);
  font-size: 9px;
  padding: 2px 6px;
  min-width: 18px;
  text-align: center;
  display: none;
  font-style: normal;
}
.cart-badge.visible { display: inline-block; }
.nav-cart:hover .cart-badge { background: var(--bg); color: var(--text-primary); }

/* ─── HERO ────────────────────────────────────────── */
.hero {
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  min-height: 540px;
}

.hero-left {
  padding: 64px 48px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero-eyebrow {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(44px, 4.5vw, 76px);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}
.hero-title em { font-style: italic; font-weight: 300; }

.hero-body {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-family: var(--sans);
  font-weight: 300;
}

.hero-disclaimer {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
}

.hero-image {
  border-right: 1px solid var(--border);
  overflow: hidden;
  position: relative;
}
.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  display: block;
}
.hero-image-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 14px 20px;
  background: rgba(13,13,12,0.72);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.hero-image-label-name { font-size: 12px; font-weight: 500; letter-spacing: 0.08em; color: var(--bg); text-transform: uppercase; }
.hero-image-label-detail { font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: rgba(245,244,240,0.55); }

.hero-right {
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: 28px;
}
.hero-stat { background: var(--bg-card); padding: 20px; }
.hero-stat-num { font-size: 28px; font-weight: 500; letter-spacing: -0.02em; margin-bottom: 4px; }
.hero-stat-label { font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-tertiary); }
.hero-notice {
  background: var(--text-primary);
  color: var(--bg);
  padding: 16px 20px;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  line-height: 1.8;
}

/* ─── TICKER ──────────────────────────────────────── */
.ticker { overflow: hidden; border-bottom: 1px solid var(--border); padding: 12px 0; white-space: nowrap; }
.ticker-inner {
  display: inline-block;
  animation: ticker-scroll 40s linear infinite;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.ticker-inner span { margin: 0 40px; }
@keyframes ticker-scroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* ─── SECTION HEADER ──────────────────────────────── */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 48px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.section-label { font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-tertiary); }
.section-title { font-size: 28px; font-weight: 500; letter-spacing: -0.02em; }

/* ─── RESEARCH FINDER ─────────────────────────────── */
.finder-section { padding: 80px 48px; border-bottom: 1px solid var(--border); }

.goal-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: 48px;
}
.goal-card {
  background: var(--bg-card);
  padding: 28px 20px;
  cursor: pointer;
  transition: background 0.15s;
  border: none;
  font-family: var(--mono);
  text-align: left;
}
.goal-card:hover, .goal-card.active { background: var(--text-primary); color: var(--bg); }
.goal-card.active .goal-icon, .goal-card:hover .goal-icon { filter: invert(1); }
.goal-icon { width: 28px; height: 28px; margin-bottom: 16px; opacity: 0.6; }
.goal-name { font-size: 11px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; display: block; margin-bottom: 6px; }
.goal-desc { font-size: 10px; color: var(--text-tertiary); line-height: 1.5; letter-spacing: 0.05em; }
.goal-card.active .goal-desc, .goal-card:hover .goal-desc { color: rgba(245,244,240,0.55); }

.reco-panel { display: none; animation: fadeIn 0.3s ease; }
.reco-panel.visible { display: block; }

.reco-header { display: flex; align-items: center; gap: 16px; margin-bottom: 32px; }
.reco-tag { font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; padding: 6px 14px; border: 1px solid var(--text-primary); background: var(--text-primary); color: var(--bg); }
.reco-subtitle { font-size: 11px; letter-spacing: 0.12em; color: var(--text-secondary); text-transform: uppercase; }

.reco-compounds { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); margin-bottom: 32px; }
.compound-card { background: var(--bg-card); padding: 28px 24px; }
.compound-priority { font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 20px; }
.compound-priority.primary { color: var(--text-primary); font-weight: 500; }
.compound-name { font-size: 22px; font-weight: 500; letter-spacing: -0.01em; margin-bottom: 4px; }
.compound-dose { font-size: 11px; color: var(--text-secondary); margin-bottom: 16px; letter-spacing: 0.08em; }
.compound-divider { height: 1px; background: var(--border-light); margin: 16px 0; }
.compound-mechanism { font-size: 11px; color: var(--text-secondary); line-height: 1.6; font-family: var(--sans); font-weight: 300; margin-bottom: 16px; }
.compound-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase; padding: 4px 10px; border: 1px solid var(--border); color: var(--text-tertiary); }

.reco-protocol { background: var(--bg-card); border: 1px solid var(--border); padding: 32px; }
.protocol-title { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border-light); }
.protocol-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.step-num { font-size: 32px; font-weight: 300; letter-spacing: -0.03em; color: var(--text-tertiary); margin-bottom: 8px; line-height: 1; }
.step-label { font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 6px; }
.step-desc { font-size: 11px; color: var(--text-secondary); line-height: 1.5; font-family: var(--sans); font-weight: 300; }

/* ─── PRODUCTS ────────────────────────────────────── */
.products-section { padding: 80px 48px; border-bottom: 1px solid var(--border); }

.product-filter-bar { display: flex; gap: 8px; margin-bottom: 32px; flex-wrap: wrap; }
.filter-btn {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 7px 16px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--mono);
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.filter-btn:hover, .filter-btn.active { background: var(--text-primary); color: var(--bg); border-color: var(--text-primary); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.product-card {
  background: var(--bg-card);
  padding: 28px 22px;
  position: relative;
  display: flex;
  flex-direction: column;
}
.product-card.hidden { display: none; }
.product-badge { position: absolute; top: 0; right: 0; font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase; padding: 5px 10px; background: var(--text-primary); color: var(--bg); }
.product-cat { font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 28px; }
.product-name { font-size: 24px; font-weight: 500; letter-spacing: -0.02em; line-height: 1; margin-bottom: 3px; }
.product-dose-label { font-size: 13px; color: var(--text-secondary); margin-bottom: 3px; }
.product-fullname { font-size: 9px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 20px; }
.product-divider { height: 1px; background: var(--border-light); margin: 16px 0; }
.product-benefit { font-size: 11px; color: var(--text-secondary); line-height: 1.6; font-family: var(--sans); font-weight: 300; margin-bottom: 16px; flex: 1; }
.product-price { font-size: 16px; font-weight: 500; letter-spacing: -0.01em; margin-bottom: 10px; }
.product-format { font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 14px; }

.btn-add-cart {
  width: 100%;
  padding: 11px;
  background: transparent;
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  color: var(--text-secondary);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  margin-top: auto;
}
.btn-add-cart:hover { background: var(--text-primary); color: var(--bg); border-color: var(--text-primary); }
.btn-add-cart.added { background: var(--text-primary); color: var(--bg); border-color: var(--text-primary); }

/* ─── PROTOCOL BUILDER ────────────────────────────── */
.builder-section {
  padding: 80px 48px;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 64px;
}
.builder-eyebrow { font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 16px; }
.builder-title { font-size: 36px; font-weight: 500; letter-spacing: -0.02em; line-height: 1.1; margin-bottom: 20px; }
.builder-body { font-size: 12px; line-height: 1.7; color: var(--text-secondary); font-family: var(--sans); font-weight: 300; margin-bottom: 32px; }

.form-row { margin-bottom: 20px; }
.form-label { font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-secondary); display: block; margin-bottom: 8px; }
.form-select {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-primary);
  appearance: none;
  outline: none;
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: border-color 0.15s;
}
.form-select:focus { border-color: var(--text-primary); }

.research-confirm { display: flex; align-items: flex-start; gap: 12px; padding: 16px; border: 1px solid var(--border); background: var(--bg-card); cursor: pointer; }
.research-confirm input[type=checkbox] { width: 15px; height: 15px; margin-top: 1px; accent-color: var(--text-primary); cursor: pointer; flex-shrink: 0; }
.research-confirm-text { font-size: 11px; letter-spacing: 0.06em; color: var(--text-secondary); line-height: 1.5; }

.checkbox-group { display: flex; flex-direction: column; gap: 8px; }
.checkbox-item { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.checkbox-item input[type=checkbox] { width: 14px; height: 14px; accent-color: var(--text-primary); cursor: pointer; }
.checkbox-label { font-size: 11px; letter-spacing: 0.08em; color: var(--text-secondary); }

.btn-generate {
  width: 100%;
  padding: 14px;
  background: var(--text-primary);
  color: var(--bg);
  border: none;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  margin-top: 20px;
  transition: opacity 0.15s;
}
.btn-generate:hover { opacity: 0.82; }

.protocol-output {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 40px;
  min-height: 480px;
  display: flex;
  flex-direction: column;
}
.output-placeholder { margin: auto; text-align: center; }
.output-placeholder-cross { font-size: 48px; font-weight: 300; color: var(--border); display: block; margin-bottom: 16px; line-height: 1; }
.output-placeholder-text { font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-tertiary); }

.output-content { display: none; width: 100%; }
.output-content.visible { display: block; animation: fadeIn 0.3s ease; }
.output-header { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.output-title { font-size: 22px; font-weight: 500; letter-spacing: -0.01em; }
.output-date { font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-tertiary); }
.output-stack-label { font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 12px; }

.output-compound-row { padding: 16px 0; border-bottom: 1px solid var(--border-light); }
.output-compound-row:last-child { border-bottom: none; }
.ocr-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.ocr-name { font-size: 14px; font-weight: 500; }
.ocr-priority { font-size: 9px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-tertiary); }
.ocr-grid { display: grid; grid-template-columns: 1fr 1fr 2fr; gap: 1px; background: var(--border-light); border: 1px solid var(--border-light); }
.ocr-cell { background: var(--bg); padding: 8px 10px; }
.ocr-cell-label { font-size: 8px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 3px; }
.ocr-cell-value { font-size: 11px; font-weight: 500; letter-spacing: 0.04em; color: var(--text-primary); line-height: 1.3; }
.ocr-recon { margin-top: 8px; padding: 8px 10px; background: var(--bg-card); border: 1px solid var(--border-light); border-left: 2px solid var(--text-primary); }
.ocr-recon-label { font-size: 8px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 2px; }
.ocr-recon-text { font-size: 10px; color: var(--text-secondary); line-height: 1.5; font-family: var(--sans); font-weight: 300; }

.output-disclaimer { font-size: 10px; color: var(--text-tertiary); letter-spacing: 0.08em; line-height: 1.6; font-family: var(--sans); padding-top: 16px; border-top: 1px solid var(--border-light); margin-top: 4px; }
.output-print-btn { width: 100%; padding: 11px; background: transparent; color: var(--text-secondary); border: 1px solid var(--border); font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; cursor: pointer; margin-top: 12px; transition: background 0.15s, color 0.15s; }
.output-print-btn:hover { background: var(--text-primary); color: var(--bg); border-color: var(--text-primary); }

/* ─── SCIENCE ─────────────────────────────────────── */
.science-section { padding: 80px 48px; border-bottom: 1px solid var(--border); }
.science-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); margin-top: 48px; }
.science-card { background: var(--bg-card); padding: 36px 28px; }
.science-number { font-size: 48px; font-weight: 300; letter-spacing: -0.04em; color: var(--text-tertiary); margin-bottom: 4px; line-height: 1; }
.science-label { font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--border-light); }
.science-body { font-size: 12px; line-height: 1.7; color: var(--text-secondary); font-family: var(--sans); font-weight: 300; }

/* ─── FOOTER ──────────────────────────────────────── */
footer { padding: 48px; border-top: 1px solid var(--border); display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 32px; }
.footer-logo { font-size: 15px; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 12px; }
.footer-tagline { font-size: 10px; letter-spacing: 0.1em; color: var(--text-tertiary); line-height: 1.6; text-transform: uppercase; }
.footer-col-title { font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 16px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { font-size: 11px; letter-spacing: 0.08em; color: var(--text-secondary); text-decoration: none; transition: color 0.15s; }
.footer-links a:hover { color: var(--text-primary); }
.footer-bottom { padding: 20px 48px; border-top: 1px solid var(--border-light); display: flex; justify-content: space-between; }
.footer-legal { font-size: 10px; letter-spacing: 0.1em; color: var(--text-tertiary); text-transform: uppercase; }

/* ─── CART DRAWER ─────────────────────────────────── */
.cart-overlay { display: none; position: fixed; inset: 0; background: rgba(13,13,12,0.5); z-index: 300; }
.cart-overlay.open { display: block; }

.cart-drawer {
  position: fixed;
  top: 0; right: -480px;
  width: 480px; height: 100vh;
  background: var(--bg);
  border-left: 1px solid var(--border);
  z-index: 301;
  display: flex;
  flex-direction: column;
  transition: right 0.28s cubic-bezier(0.4,0,0.2,1);
}
.cart-drawer.open { right: 0; }

.cart-header { padding: 24px 32px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; flex-shrink: 0; }
.cart-title { font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; }
.cart-close { background: none; border: none; cursor: pointer; font-size: 22px; color: var(--text-tertiary); font-family: var(--mono); padding: 0; line-height: 1; }
.cart-close:hover { color: var(--text-primary); }

.cart-body { flex: 1; overflow-y: auto; }
.cart-empty { padding: 60px 32px; text-align: center; }
.cart-empty p { font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-tertiary); }

.cart-item { padding: 20px 32px; border-bottom: 1px solid var(--border-light); display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: start; }
.cart-item-name { font-size: 13px; font-weight: 500; margin-bottom: 3px; }
.cart-item-detail { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 12px; }
.cart-item-qty { display: flex; align-items: center; border: 1px solid var(--border); width: fit-content; }
.qty-btn { background: none; border: none; width: 28px; height: 28px; cursor: pointer; font-size: 16px; color: var(--text-secondary); font-family: var(--mono); display: flex; align-items: center; justify-content: center; transition: background 0.12s; line-height: 1; }
.qty-btn:hover { background: var(--text-primary); color: var(--bg); }
.qty-num { font-size: 11px; padding: 0 12px; border-left: 1px solid var(--border); border-right: 1px solid var(--border); line-height: 28px; min-width: 40px; text-align: center; }
.cart-item-right { text-align: right; }
.cart-item-price { font-size: 13px; font-weight: 500; margin-bottom: 6px; }
.cart-item-remove { font-size: 9px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-tertiary); background: none; border: none; cursor: pointer; font-family: var(--mono); padding: 0; transition: color 0.12s; }
.cart-item-remove:hover { color: var(--text-primary); }

.cart-footer { padding: 24px 32px; border-top: 1px solid var(--border); flex-shrink: 0; }
.cart-subtotal { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.cart-subtotal-label { font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-tertiary); }
.cart-subtotal-amount { font-size: 22px; font-weight: 500; letter-spacing: -0.02em; }
.cart-note { font-size: 10px; color: var(--text-tertiary); line-height: 1.5; font-family: var(--sans); font-weight: 300; margin-bottom: 16px; }
.btn-checkout {
  width: 100%;
  padding: 14px;
  background: var(--text-primary);
  color: var(--bg);
  border: none;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  display: block;
  text-align: center;
  transition: opacity 0.15s;
}
.btn-checkout:hover { opacity: 0.85; }

/* ─── CHECKOUT PAGE ───────────────────────────────── */
.checkout-wrap { padding: 64px 48px; display: grid; grid-template-columns: 1fr 380px; gap: 64px; align-items: start; }
.checkout-eyebrow { font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 10px; }
.checkout-title { font-size: 32px; font-weight: 500; letter-spacing: -0.02em; margin-bottom: 40px; }

.form-section { margin-bottom: 32px; }
.form-section-label { font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border-light); display: block; }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.form-grid-1 { margin-bottom: 12px; }

.field {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-primary);
  outline: none;
  letter-spacing: 0.04em;
  transition: border-color 0.15s;
  -webkit-appearance: none;
}
.field:focus { border-color: var(--text-primary); }
.field::placeholder { color: var(--text-tertiary); }

.payment-info-box { background: var(--text-primary); color: var(--bg); padding: 24px; margin-top: 8px; }
.payment-info-label { font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; opacity: 0.6; margin-bottom: 10px; }
.payment-info-email { font-size: 18px; font-weight: 500; letter-spacing: -0.01em; margin-bottom: 8px; }
.payment-info-note { font-size: 10px; letter-spacing: 0.06em; line-height: 1.6; opacity: 0.6; font-family: var(--sans); font-weight: 300; }

.co-confirm { display: flex; align-items: flex-start; gap: 12px; padding: 16px; border: 1px solid var(--border); background: var(--bg-card); margin-bottom: 20px; }
.co-confirm input { width: 15px; height: 15px; margin-top: 1px; accent-color: var(--text-primary); flex-shrink: 0; }
.co-confirm-text { font-size: 11px; letter-spacing: 0.05em; color: var(--text-secondary); line-height: 1.5; }

.btn-place {
  width: 100%;
  padding: 15px;
  background: var(--text-primary);
  color: var(--bg);
  border: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-place:hover { opacity: 0.85; }

.order-summary-box { background: var(--bg-card); border: 1px solid var(--border); padding: 28px; position: sticky; top: 84px; }
.os-title { font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--border-light); }
.os-item { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--border-light); font-size: 12px; }
.os-item:last-child { border-bottom: none; }
.os-item-name { font-weight: 500; }
.os-item-dose { font-size: 10px; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 2px; }
.os-item-price { font-weight: 500; }
.os-total { display: flex; justify-content: space-between; align-items: baseline; padding-top: 16px; border-top: 1px solid var(--border); margin-top: 4px; }
.os-total-label { font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-tertiary); }
.os-total-amount { font-size: 22px; font-weight: 500; letter-spacing: -0.02em; }
.os-interac { margin-top: 16px; padding: 12px; background: var(--bg); border: 1px solid var(--border-light); font-size: 10px; letter-spacing: 0.06em; color: var(--text-secondary); line-height: 1.6; }

/* ─── CONFIRMATION PAGE ───────────────────────────── */
.conf-wrap { padding: 80px 48px; max-width: 700px; margin: 0 auto; }
.conf-check { font-size: 36px; margin-bottom: 20px; }
.conf-eyebrow { font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 10px; }
.conf-title { font-size: 36px; font-weight: 500; letter-spacing: -0.02em; line-height: 1.1; margin-bottom: 20px; }
.conf-body { font-size: 13px; color: var(--text-secondary); line-height: 1.7; font-family: var(--sans); font-weight: 300; margin-bottom: 40px; }

.conf-ref-bar { background: var(--text-primary); color: var(--bg); padding: 20px 28px; display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; }
.conf-ref-label { font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; opacity: 0.6; margin-bottom: 4px; }
.conf-ref-code { font-size: 26px; font-weight: 500; letter-spacing: 0.06em; }
.conf-ref-amount { font-size: 26px; font-weight: 500; text-align: right; }

.conf-box { border: 1px solid var(--border); padding: 28px; margin-bottom: 24px; }
.conf-box-title { font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--border-light); }
.conf-steps { display: flex; flex-direction: column; gap: 14px; }
.conf-step { display: flex; gap: 16px; }
.conf-step-n { font-size: 10px; font-weight: 500; color: var(--text-tertiary); min-width: 20px; padding-top: 2px; }
.conf-step-t { font-size: 12px; color: var(--text-secondary); line-height: 1.5; font-family: var(--sans); font-weight: 300; }
.conf-step-t strong { font-family: var(--mono); color: var(--text-primary); font-weight: 500; }

.conf-item-row { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--border-light); font-size: 12px; }
.conf-item-row:last-child { border-bottom: none; }
.conf-item-name { font-weight: 500; }
.conf-item-dose { font-size: 10px; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 2px; }
.conf-item-price { font-weight: 500; }
.conf-total-row { display: flex; justify-content: space-between; padding-top: 16px; border-top: 1px solid var(--border); }
.conf-total-label { font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-tertiary); }
.conf-total-amount { font-size: 18px; font-weight: 500; }

.conf-note { font-size: 10px; color: var(--text-tertiary); letter-spacing: 0.06em; line-height: 1.6; font-family: var(--sans); }
.btn-back { display: inline-block; margin-top: 28px; padding: 11px 22px; border: 1px solid var(--border); font-family: var(--mono); font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; cursor: pointer; background: none; color: var(--text-secondary); text-decoration: none; transition: background 0.15s, color 0.15s; }
.btn-back:hover { background: var(--text-primary); color: var(--bg); }

/* ─── MODAL ───────────────────────────────────────── */
.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(13,13,12,0.7); z-index: 200; align-items: center; justify-content: center; }
.modal-overlay.open { display: flex; }
.modal { background: var(--bg); border: 1px solid var(--border); padding: 48px; max-width: 560px; width: 100%; animation: slideUp 0.25s ease; }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.modal-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 32px; }
.modal-title { font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-tertiary); }
.modal-close { background: none; border: none; cursor: pointer; font-size: 22px; color: var(--text-tertiary); padding: 0; line-height: 1; font-family: var(--mono); }
.modal-close:hover { color: var(--text-primary); }
.modal-question { font-size: 24px; font-weight: 500; letter-spacing: -0.02em; line-height: 1.2; margin-bottom: 28px; }
.modal-options { display: flex; flex-direction: column; gap: 8px; margin-bottom: 28px; }
.modal-option { padding: 14px 16px; border: 1px solid var(--border); background: var(--bg-card); cursor: pointer; font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; text-align: left; color: var(--text-secondary); transition: background 0.15s, border-color 0.15s, color 0.15s; display: flex; justify-content: space-between; align-items: center; }
.modal-option:hover, .modal-option.selected { background: var(--text-primary); color: var(--bg); border-color: var(--text-primary); }
.btn-modal-submit { width: 100%; padding: 14px; background: var(--text-primary); color: var(--bg); border: none; font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; cursor: pointer; transition: opacity 0.15s; }
.btn-modal-submit:hover { opacity: 0.85; }

/* ═══════════════════════════════════════════════════
   MOBILE FIRST — responsive overrides
   Breakpoints: 768px (tablet), 480px (phone)
   ═══════════════════════════════════════════════════ */

@media (max-width: 768px) {

  /* ─── NAV ─── */
  nav {
    padding: 0 20px;
    height: 56px;
  }
  .nav-logo { font-size: 14px; letter-spacing: 0.12em; }
  .nav-links { display: none; } /* hide nav links on mobile */
  .nav-right { gap: 8px; }
  .nav-cta { display: none; } /* hide on mobile, cart is enough */
  .nav-cart { padding: 8px 14px; font-size: 10px; }

  /* ─── HERO ─── */
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .hero-left {
    padding: 40px 20px 32px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .hero-title { font-size: clamp(40px, 10vw, 60px); margin-bottom: 20px; }
  .hero-body { font-size: 13px; margin-bottom: 24px; }

  .hero-image {
    height: 280px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .hero-right {
    padding: 28px 20px;
  }
  .hero-stats {
    grid-template-columns: 1fr 1fr;
    margin-bottom: 20px;
  }
  .hero-stat { padding: 16px; }
  .hero-stat-num { font-size: 22px; }

  /* ─── TICKER ─── */
  .ticker { padding: 10px 0; }

  /* ─── SECTIONS ─── */
  .finder-section,
  .products-section,
  .builder-section,
  .science-section { padding: 48px 20px; }

  .section-header { flex-direction: column; gap: 8px; margin-bottom: 32px; }
  .section-title { font-size: 22px; }

  /* ─── GOAL GRID ─── */
  .goal-grid {
    grid-template-columns: 1fr 1fr;
    margin-bottom: 32px;
  }

  /* ─── RECO COMPOUNDS ─── */
  .reco-compounds { grid-template-columns: 1fr; }
  .protocol-steps { grid-template-columns: 1fr 1fr; gap: 20px; }

  /* ─── PRODUCT GRID ─── */
  .product-grid { grid-template-columns: 1fr 1fr; }
  .product-name { font-size: 18px; }

  .product-filter-bar { gap: 6px; }
  .filter-btn { padding: 6px 12px; font-size: 9px; }

  /* ─── PROTOCOL BUILDER ─── */
  .builder-section {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .protocol-output { min-height: 300px; }
  .ocr-grid { grid-template-columns: 1fr 1fr; }

  /* ─── SCIENCE ─── */
  .science-grid { grid-template-columns: 1fr 1fr; }
  .science-number { font-size: 36px; }

  /* ─── CART DRAWER ─── */
  .cart-drawer { width: 100%; right: -100%; }

  /* ─── CHECKOUT ─── */
  .checkout-wrap {
    grid-template-columns: 1fr;
    padding: 32px 20px;
    gap: 32px;
  }
  .checkout-title { font-size: 26px; margin-bottom: 28px; }
  .form-grid-2 { grid-template-columns: 1fr; }

  /* ─── CONFIRMATION ─── */
  .conf-wrap { padding: 40px 20px; }
  .conf-title { font-size: 26px; }
  .conf-ref-bar { flex-direction: column; gap: 16px; }
  .conf-ref-bar > div:last-child { text-align: left; }
  .conf-ref-code { font-size: 20px; }
  .conf-ref-amount { font-size: 20px; }

  /* ─── FOOTER ─── */
  footer {
    grid-template-columns: 1fr 1fr;
    padding: 40px 20px;
    gap: 28px;
  }
  .footer-bottom { padding: 16px 20px; flex-direction: column; gap: 8px; }

  /* ─── MODAL ─── */
  .modal { padding: 28px 20px; margin: 16px; max-width: calc(100% - 32px); }
  .modal-question { font-size: 20px; }

}

@media (max-width: 480px) {

  /* ─── HERO ─── */
  .hero-title { font-size: 36px; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .hero-stat-num { font-size: 20px; }

  /* ─── GOAL GRID ─── */
  .goal-grid { grid-template-columns: 1fr; }

  /* ─── PRODUCT GRID ─── */
  .product-grid { grid-template-columns: 1fr; }

  /* ─── RECO PANEL ─── */
  .reco-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .protocol-steps { grid-template-columns: 1fr; }

  /* ─── SCIENCE ─── */
  .science-grid { grid-template-columns: 1fr; }

  /* ─── FOOTER ─── */
  footer { grid-template-columns: 1fr; }

  /* ─── PROTOCOL OUTPUT ─── */
  .ocr-grid { grid-template-columns: 1fr; }

  /* ─── CHECKOUT ─── */
  .order-summary-box { position: static; }

  /* ─── BUILDER ─── */
  .builder-title { font-size: 26px; }

}

/* ─── MOBILE NAV MENU ────────────────────────────── */
.nav-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 8px 0;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 56px;
  left: 0; right: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 99;
  padding: 20px;
  flex-direction: column;
  gap: 0;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-secondary);
  padding: 14px 0;
  border-bottom: 1px solid var(--border-light);
  transition: color 0.15s;
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a:hover { color: var(--text-primary); }

@media (max-width: 768px) {
  .nav-menu-btn { display: block; }
}

/* ═══════════════════════════════════════════════════
   MULTI-PAGE ADDITIONS
   ═══════════════════════════════════════════════════ */

/* ─── PROTOCOL BUILDER FLOATER ───────────────────── */
.protocol-floater {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background: var(--text-primary);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 48px;
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
  border-top: 1px solid rgba(255,255,255,0.1);
}
.protocol-floater.visible { transform: translateY(0); }
.protocol-floater.hidden  { display: none; }

.floater-left {
  display: flex;
  align-items: center;
  gap: 20px;
}
.floater-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.55;
}
.floater-title {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.floater-cta {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 10px 24px;
  border: 1px solid rgba(245,244,240,0.3);
  color: var(--bg);
  text-decoration: none;
  font-family: var(--mono);
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.floater-cta:hover { background: rgba(245,244,240,0.1); border-color: var(--bg); }
.floater-close {
  background: none;
  border: none;
  color: rgba(245,244,240,0.4);
  font-size: 18px;
  cursor: pointer;
  font-family: var(--mono);
  padding: 0 0 0 20px;
  line-height: 1;
}
.floater-close:hover { color: var(--bg); }

@media (max-width: 768px) {
  .protocol-floater { padding: 12px 20px; }
  .floater-label { display: none; }
  .floater-title { font-size: 11px; }
}

/* ─── BREADCRUMB ─────────────────────────────────── */
.breadcrumb {
  padding: 14px 48px;
  border-bottom: 1px solid var(--border);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  display: flex;
  gap: 10px;
  align-items: center;
}
.breadcrumb a { color: var(--text-tertiary); text-decoration: none; transition: color 0.15s; }
.breadcrumb a:hover { color: var(--text-primary); }
.breadcrumb-sep { opacity: 0.4; }
@media (max-width: 768px) { .breadcrumb { padding: 12px 20px; } }

/* ─── HOMEPAGE FEATURED GRID ─────────────────────── */
.featured-section { padding: 80px 48px; border-bottom: 1px solid var(--border); }

.featured-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

/* ─── HOMEPAGE CREDIBILITY STRIP ─────────────────── */
.cred-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--border);
  border-bottom: 1px solid var(--border);
}
.cred-item {
  background: var(--bg-card);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.cred-num {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.cred-label {
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  line-height: 1.4;
}
@media (max-width: 768px) {
  .cred-strip { grid-template-columns: repeat(2, 1fr); }
  .featured-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-section { padding: 48px 20px; }
}
@media (max-width: 480px) {
  .cred-strip { grid-template-columns: 1fr 1fr; }
  .featured-grid { grid-template-columns: 1fr; }
}

/* ─── COMPOUND CATALOG PAGE ──────────────────────── */
.catalog-section { padding: 64px 48px; }
@media (max-width: 768px) { .catalog-section { padding: 40px 20px; } }

/* ─── PRODUCT DETAIL PAGE ────────────────────────── */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 0;
  min-height: calc(100vh - 56px);
  align-items: start;
}

.product-detail-left {
  padding: 64px 64px 64px 48px;
  border-right: 1px solid var(--border);
}

.product-detail-cat {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 16px;
}
.product-detail-name {
  font-size: clamp(48px, 6vw, 80px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 0.95;
  margin-bottom: 8px;
}
.product-detail-dose {
  font-size: 20px;
  font-weight: 300;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.product-detail-fullname {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 40px;
}
.product-detail-divider { height: 1px; background: var(--border); margin: 32px 0; }

.product-detail-section-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}
.product-detail-body {
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-secondary);
  font-family: var(--sans);
  font-weight: 300;
  margin-bottom: 32px;
}

.product-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; }
.product-tag {
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 5px 12px;
  border: 1px solid var(--border);
  color: var(--text-tertiary);
}

.recon-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 2px solid var(--text-primary);
  padding: 20px 24px;
}
.recon-label {
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 8px;
}
.recon-text {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.7;
  font-family: var(--sans);
  font-weight: 300;
}

.product-detail-right {
  padding: 64px 48px;
  position: sticky;
  top: 56px;
}

.product-purchase-box {
  border: 1px solid var(--border);
  padding: 32px;
  margin-bottom: 24px;
}
.purchase-box-title {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
}
.purchase-price {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.purchase-currency {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 24px;
}
.purchase-format {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  padding: 12px 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 20px;
}
.btn-add-detail {
  width: 100%;
  padding: 15px;
  background: var(--text-primary);
  color: var(--bg);
  border: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-add-detail:hover { opacity: 0.85; }
.btn-add-detail.added { opacity: 0.7; }

.product-coa-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 20px 24px;
  margin-bottom: 24px;
}
.coa-label {
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 6px;
}
.coa-value {
  font-size: 13px;
  font-weight: 500;
}
.coa-sub {
  font-size: 10px;
  color: var(--text-tertiary);
  letter-spacing: 0.08em;
  margin-top: 3px;
}

.product-related { margin-top: 40px; }
.related-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}
.related-items { display: flex; flex-direction: column; gap: 1px; background: var(--border); border: 1px solid var(--border); }
.related-item {
  background: var(--bg-card);
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-decoration: none;
  color: var(--text-primary);
  transition: background 0.15s;
}
.related-item:hover { background: var(--bg); }
.related-item-name { font-size: 12px; font-weight: 500; }
.related-item-dose { font-size: 10px; color: var(--text-tertiary); letter-spacing: 0.1em; text-transform: uppercase; margin-top: 2px; }
.related-item-price { font-size: 12px; font-weight: 500; }

@media (max-width: 768px) {
  .product-detail { grid-template-columns: 1fr; }
  .product-detail-left { padding: 40px 20px; border-right: none; border-bottom: 1px solid var(--border); }
  .product-detail-right { padding: 32px 20px; position: static; }
  .product-detail-name { font-size: 48px; }
}

/* ─── PROTOCOLS PAGE ─────────────────────────────── */
.protocols-page { padding: 64px 48px; }
@media (max-width: 768px) { .protocols-page { padding: 40px 20px; } }

/* ─── VIEW ALL LINK ──────────────────────────────── */
.view-all-link {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
  transition: color 0.15s, border-color 0.15s;
}
.view-all-link:hover { color: var(--text-primary); border-color: var(--text-primary); }