:root {
  --white: #fff;
  --black: #090909;
  --gray-900: #202020;
  --gray-700: #5d5d5d;
  --gray-400: #b8b8b8;
  --gray-200: #e7e7e7;
  --red: #e10600;
  --blue: #1158d8;
  --yellow: #ffd21a;
  --green: #138f2d;
  --orange: #ff4a12;
  --mono: "Helvetica Neue", "Helvetica", "Arial", sans-serif;
  --tech: "Helvetica Neue Mono", "Helvetica Monospaced", "ui-monospace", "SFMono-Regular", "Roboto Mono", monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--black);
  font-family: var(--mono);
  line-height: 1.25;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 18px;
  left: clamp(12px, 2vw, 28px);
  right: clamp(12px, 2vw, 28px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 0;
  padding: 16px clamp(18px, 3vw, 42px);
  background: rgba(255, 255, 255, 0.56);
  color: var(--black);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.brand {
  font-size: clamp(24px, 2.1vw, 34px);
  letter-spacing: 0;
}

.brand span {
  position: relative;
  top: -0.42em;
  font-size: 0.78em;
}

.brand span,
h1 span,
h2 span,
.product-data h2 span,
nav span {
  color: var(--red);
  font-style: normal;
}

nav {
  display: flex;
  gap: clamp(18px, 3.2vw, 54px);
  align-items: center;
  font-size: 16px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--red);
  background: var(--red);
  color: var(--white);
  padding: 10px 16px;
  transition: background 180ms ease, color 180ms ease;
}

.nav-cta span {
  color: currentColor;
}

.nav-cta:hover {
  background: var(--white);
  color: var(--red);
}

.cart-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.cart-count {
  position: absolute;
  top: -8px;
  right: -10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--red);
  color: var(--white);
  font-family: var(--tech);
  font-size: 11px;
  font-weight: 700;
  padding: 0 4px;
}

.hero {
  min-height: 100svh;
  position: relative;
  overflow: hidden;
  background: var(--black);
  display: grid;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url("assets/hero-mots-c.png") center / cover no-repeat;
  filter: saturate(0.75);
}

.hero-bg::after,
.truth-image::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(255, 255, 255, 0.22) 0.7px, transparent 0.7px);
  background-size: 4px 4px;
  opacity: 0.17;
  mix-blend-mode: overlay;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
  gap: clamp(28px, 3.5vw, 56px);
  align-items: center;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 120px clamp(24px, 4vw, 88px) 80px;
  color: var(--white);
}

.hero-content h1,
.hero-content > p {
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.55);
}

.hero-content {
  max-width: 620px;
}

.hero-kicker {
  font-family: var(--tech);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--white);
  opacity: 0.7;
  margin-bottom: clamp(24px, 3vw, 48px);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

p,
small,
li,
dt,
dd,
figcaption,
caption,
label,
input,
textarea,
select,
.button,
.nav-cta,
.section-kicker,
.peptide-list,
.science-text strong,
.viz-header,
.legend,
.protocol-type,
.protocol-copy p,
.protocol-facts,
.included,
.product-data p,
.resource-grid,
.research-note {
  font-family: var(--tech);
}

h1 {
  margin-bottom: 34px;
  font-size: clamp(50px, 6.2vw, 96px);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-content > p:not(.research-note) {
  max-width: 420px;
  margin-bottom: 0;
  font-size: clamp(18px, 1.6vw, 24px);
  line-height: 1.5;
  opacity: 0.85;
}

.button {
  display: inline-flex;
  min-width: 250px;
  min-height: 64px;
  align-items: center;
  justify-content: center;
  gap: 24px;
  border: 1px solid currentColor;
  padding: 18px 28px;
  font-weight: 700;
  text-transform: uppercase;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.button span {
  color: var(--red);
  font-size: 28px;
  font-weight: 300;
  line-height: 1;
}

.button-dark,
.button {
  background: var(--white);
  color: var(--black);
}

.button:hover,
.button-dark:hover,
.button-red {
  border-color: var(--red);
  background: var(--red);
  color: var(--white);
}

.button:hover span,
.button-dark:hover span,
.button-red span {
  color: var(--white);
}

.button-red:hover {
  background: var(--white);
  color: var(--red);
}

.button-red:hover span {
  color: var(--red);
}

.research-note {
  margin-top: 86px;
  font-size: 14px;
  text-transform: uppercase;
}

.hero-product-card {
  background: var(--white);
  color: var(--black);
  border-radius: 0;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
  min-width: 0;
  max-width: 100%;
}

.product-card-visual {
  display: grid;
  aspect-ratio: 4 / 3;
  place-items: center;
  background: linear-gradient(135deg, transparent 49.7%, var(--gray-300, #d6d6d6) 50%, transparent 50.3%),
    linear-gradient(45deg, transparent 49.7%, var(--gray-300, #d6d6d6) 50%, transparent 50.3%), #f7f7f7;
  flex-shrink: 0;
  overflow: hidden;
}

.product-card-visual img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.product-card-visual span {
  background: var(--white);
  border: 1px solid var(--gray-200);
  padding: 10px 16px;
  font-family: var(--tech);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-size: 12px;
  font-weight: 700;
}

.product-card-body {
  padding: 24px;
  flex: 1;
  background: var(--white);
  position: relative;
}

.product-card-body h3 {
  font-size: clamp(24px, 2.2vw, 32px);
  font-weight: 500;
  margin: 0 0 6px;
  letter-spacing: 0.02em;
}

.product-card-body h3 .red {
  color: var(--red);
  font-weight: 400;
}

.product-card-category {
  font-family: var(--tech);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--gray-700);
  margin: 0 0 14px;
}

.product-card-line {
  display: block;
  width: 100%;
  height: 2px;
  margin-bottom: 18px;
}

.product-card-dose {
  font-size: 16px;
  font-weight: 500;
  margin: 0 0 18px;
}

.product-card-specs {
  margin: 0 0 20px;
  padding: 0;
}

.product-card-specs div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-200);
  font-size: 13px;
}

.product-card-specs dt {
  font-family: var(--tech);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray-700);
}

.product-card-specs dd {
  margin: 0;
  font-weight: 500;
}

.product-card-price {
  font-size: clamp(22px, 2vw, 28px);
  font-weight: 700;
  margin: 0 0 6px;
}

.product-card-note {
  font-size: 13px;
  color: var(--gray-700);
  margin: 0 0 18px;
}

.product-card-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 18px;
  background: var(--red);
  color: var(--white);
  border: none;
  font-family: var(--tech);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background 180ms ease;
}

.product-card-cta::before {
  content: "+";
  font-size: 20px;
  font-weight: 300;
  line-height: 1;
}

.product-card-cta:hover {
  background: #b91c1c;
}

section:not(.hero) {
  padding: clamp(72px, 9vw, 140px) clamp(24px, 5vw, 88px);
  scroll-margin-top: 92px;
}

.section-kicker,
.peptide-list > span,
.protocol-type,
.included > span,
dt,
small {
  font-family: var(--tech);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.section-kicker {
  margin-bottom: clamp(34px, 5vw, 72px);
  font-size: 15px;
}

.science {
  display: grid;
  grid-template-columns: minmax(340px, 0.68fr) minmax(0, 1.42fr);
  grid-template-rows: auto auto auto;
  gap: clamp(24px, 2.5vw, 42px);
  min-height: 100vh;
  align-items: start;
}

.science > * {
  min-width: 0;
}

.science > .section-kicker {
  grid-column: 1 / -1;
}

.science-copy {
  grid-column: 1;
  grid-row: 2 / span 2;
}

.peptide-list {
  display: flex;
  flex-direction: column;
  gap: 26px;
  color: var(--gray-700);
}

.peptide-list button {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid transparent;
  padding: 0 0 12px;
  text-align: left;
  text-transform: uppercase;
  font-size: 15px;
  transition: border-color 180ms ease, color 180ms ease, opacity 180ms ease;
}

.peptide-list button.active {
  border-color: var(--red);
  border-width: 4px;
  color: var(--black);
  font-weight: 700;
}

.peptide-list button span,
.science-text li span,
.viz-callout,
.included b {
  color: var(--red);
}

.science-text h2,
.truth h2,
.outcomes > h2,
.resources h2,
.final-cta h2 {
  max-width: 760px;
  margin-bottom: 34px;
  font-size: clamp(44px, 5.2vw, 86px);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: 0;
}

.science-text h2 {
  font-size: clamp(26px, 2.4vw, 38px);
  line-height: 1.12;
  margin-bottom: 14px;
}

.science-text p {
  color: var(--gray-700);
  font-size: clamp(14px, 1.1vw, 17px);
  line-height: 1.55;
}

.science-text {
  grid-column: 2;
  grid-row: 2;
}

.timeline-panel {
  grid-column: 2;
  grid-row: 3;
  position: relative;
  min-width: 0;
  padding: 8px 0 0;
}

.timeline-header {
  margin-bottom: 16px;
}

.timeline-header h3 {
  font-size: clamp(20px, 1.6vw, 28px);
  font-weight: 400;
  margin: 0 0 6px;
}

.timeline-header p {
  color: var(--gray-700);
  font-size: 14px;
  margin: 0;
}

.chart-wrap {
  position: relative;
  width: 100%;
  overflow: hidden;
}

#biomarkerChart {
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 820 / 420;
  display: block;
  background: #fff;
  border: 1px solid var(--gray-200);
}

.chart-tooltip {
  position: fixed;
  pointer-events: none;
  opacity: 0;
  transition: opacity 120ms ease;
  z-index: 50;
  background: var(--black);
  color: var(--white);
  padding: 14px 18px;
  font-family: var(--tech);
  font-size: 13px;
  line-height: 1.6;
  max-width: 280px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.chart-tooltip p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.85);
}

.chart-tooltip.visible {
  opacity: 1;
}

.chart-tooltip strong {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.biomarker-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 18px;
}

.legend-item {
  font-family: var(--tech);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.biomarker-mobile {
  display: none;
  gap: 16px;
  margin-top: 32px;
}

.bio-card {
  border: 1px solid var(--gray-200);
  padding: 20px;
  background: var(--white);
}

.bio-card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--gray-200);
  padding-bottom: 10px;
}

.bio-card-week {
  font-family: var(--tech);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--gray-700);
}

.bio-card-label {
  font-family: var(--tech);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-400);
}

.bio-card-text {
  font-size: 14px;
  line-height: 1.5;
  color: var(--gray-700);
  margin: 0 0 12px;
}

.bio-card-values {
  display: grid;
  gap: 6px;
  font-family: var(--tech);
  font-size: 12px;
}

.bio-card-values span {
  color: var(--gray-700);
}

.bio-card-values strong {
  color: var(--black);
  font-weight: 500;
}

.truth {
  position: relative;
  display: grid;
  min-height: 92vh;
  place-items: center;
  overflow: hidden;
  background: var(--black);
  color: var(--white);
  text-align: center;
}

.truth-image {
  position: absolute;
  inset: 0;
  background: url("assets/truth-athlete.png") center / cover no-repeat;
}

.truth-message {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.truth h2 {
  max-width: 780px;
  margin-bottom: 0;
  font-size: clamp(30px, 3.2vw, 52px);
  line-height: 1.12;
}

.outcome-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  border-bottom: 0;
  margin-bottom: 64px;
}

.outcome-tab {
  min-height: 205px;
  border: 1px solid var(--gray-200);
  padding: 28px;
  text-align: left;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.outcome-tab:hover,
.outcome-tab.active {
  border-color: var(--black);
}

.outcome-tab strong {
  display: block;
  margin-bottom: 22px;
  font-size: clamp(34px, 3vw, 50px);
  font-weight: 400;
  line-height: 1.08;
}

.signal {
  display: block;
  width: 100%;
  height: 3px;
  margin-bottom: 26px;
}

.blue {
  background: var(--blue);
}

.yellow {
  background: var(--yellow);
}

.green {
  background: var(--green);
}

.orange {
  background: var(--orange);
}

.outcome-tab small {
  display: block;
  max-width: 210px;
  color: var(--gray-700);
  font-size: 16px;
  text-transform: none;
}

.protocol-reveal {
  display: grid;
  grid-template-columns: minmax(260px, 0.86fr) minmax(320px, 1fr) minmax(280px, 0.7fr);
  gap: clamp(24px, 4vw, 68px);
  align-items: center;
  border: 1px solid var(--gray-400);
  padding: clamp(32px, 5vw, 72px);
}

.protocol-type {
  color: var(--blue);
  font-weight: 700;
}

.protocol-copy h3 {
  font-size: clamp(36px, 4vw, 64px);
  font-weight: 400;
}

.protocol-copy p {
  color: var(--gray-700);
  font-size: 18px;
}

.protocol-facts {
  display: grid;
  gap: 18px;
  margin-top: 40px;
}

.protocol-facts div {
  border-top: 1px solid var(--gray-300, #d6d6d6);
  padding-top: 14px;
}

.protocol-facts span {
  display: block;
  color: var(--gray-700);
  text-transform: uppercase;
}

.protocol-images {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 0;
  min-height: 330px;
  padding: 24px;
  background: var(--white);
  overflow: hidden;
}

.protocol-images img {
  flex: 1 1 0;
  min-width: 0;
  height: 300px;
  object-fit: contain;
  object-position: bottom center;
  clip-path: inset(0 18% 0 18%);
  display: block;
}

.image-placeholder-tall {
  width: min(460px, 100%);
  min-height: 520px;
}

.included ul {
  display: grid;
  gap: 18px;
  border-bottom: 1px solid var(--gray-300, #d6d6d6);
  margin: 26px 0 34px;
  padding: 0 0 28px;
  list-style: none;
}

.included li {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  gap: 14px;
}

.included p strong {
  font-size: 24px;
  font-weight: 400;
}

.product-focus {
  display: grid;
  grid-template-columns: minmax(360px, 1fr) minmax(360px, 0.8fr);
  gap: clamp(48px, 7vw, 110px);
  align-items: center;
  border-top: 1px solid var(--gray-200);
}

.product-visual {
  display: grid;
  min-height: clamp(320px, 48vw, 560px);
  place-items: center;
}

.product-focus-image {
  width: min(100%, 560px);
  max-height: clamp(320px, 56vw, 620px);
  object-fit: contain;
  display: block;
}

.product-data h2 {
  font-size: clamp(62px, 7vw, 104px);
  font-weight: 400;
}

dl {
  display: grid;
  gap: 0;
  margin: 36px 0;
}

dl div {
  display: grid;
  grid-template-columns: 130px 1fr;
  border-top: 1px solid var(--gray-300, #d6d6d6);
  padding: 15px 0;
}

dt {
  color: var(--gray-700);
}

dd {
  margin: 0;
}

.product-data p {
  max-width: 480px;
  color: var(--gray-700);
  font-size: 19px;
}

:resources {
  border-top: 1px solid var(--gray-200);
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.resource-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--gray-200);
  position: relative;
}

.resource-line {
  display: block;
  width: 100%;
  height: 3px;
}

.resource-badge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px 14px;
  border-bottom: 1px solid var(--gray-200);
}

.resource-format {
  font-family: var(--tech);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--white);
  background: var(--black);
  padding: 4px 10px;
}

.resource-pages {
  font-family: var(--tech);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-700);
}

.resource-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px;
}

.resource-category {
  font-family: var(--tech);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-700);
  margin: 0 0 10px;
}

.resource-card h3 {
  font-size: 22px;
  font-weight: 500;
  margin: 0 0 12px;
  line-height: 1.15;
}

.resource-desc {
  font-family: var(--tech);
  font-size: 13px;
  line-height: 1.5;
  color: var(--gray-700);
  margin: 0 0 18px;
  flex: 1;
}

.resource-specs {
  margin: 0 0 20px;
  padding: 0;
}

.resource-specs div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 0;
  border-top: 1px solid var(--gray-200);
}

.resource-specs div:last-child {
  border-bottom: 1px solid var(--gray-200);
}

.resource-specs dt {
  font-family: var(--tech);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--gray-700);
}

.resource-specs dd {
  margin: 0;
  font-family: var(--tech);
  font-size: 12px;
  font-weight: 500;
  color: var(--black);
}

.resource-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 48px;
  background: var(--black);
  color: var(--white);
  font-family: var(--tech);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: background 180ms ease;
}

.resource-cta span {
  color: var(--red);
  font-size: 16px;
  font-weight: 300;
}

.resource-cta:hover {
  background: var(--gray-900);
}

.final-cta {
  position: relative;
  display: grid;
  min-height: 66vh;
  place-items: center;
  text-align: center;
  overflow: hidden;
  background: var(--white);
  color: var(--black);
}

.final-cta h2 {
  margin-bottom: 0;
  position: relative;
  z-index: 1;
  color: var(--black);
}

.plus-grid {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(4, 1fr);
  pointer-events: none;
  z-index: 0;
}

.plus-grid .grid-cell {
  display: grid;
  place-items: center;
}

.plus-grid .pulse-plus {
  font-family: var(--mono);
  font-size: clamp(28px, 3.2vw, 52px);
  font-weight: 400;
  color: var(--red);
  line-height: 1;
  will-change: transform, opacity;
}

@keyframes plusPulse {
  0% { opacity: 0; transform: scale(0.5); }
  30% { opacity: 0.9; transform: scale(1.15); }
  60% { opacity: 0.6; transform: scale(1); }
  100% { opacity: 0; transform: scale(0.5); }
}

.add-cart-wrapper {
  display: grid;
  gap: 12px;
  width: 100%;
}

.qty-stepper {
  display: grid;
  gap: 8px;
}

.qty-label {
  font-family: var(--tech);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--gray-700);
}

.qty-row {
  display: inline-flex;
  align-items: center;
  gap: 0;
}

.qty-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--gray-200);
  background: var(--white);
  color: var(--black);
  font-family: var(--tech);
  font-size: 18px;
  font-weight: 300;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease;
  line-height: 1;
}

.qty-btn:hover {
  background: var(--gray-200);
  border-color: var(--gray-400);
}

.hero-product-card .product-card-body .qty-stepper {
  margin-top: 12px;
}

.hero-product-card .product-card-body .qty-label {
  font-size: 11px;
}

.qty-value {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 44px;
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
  background: var(--white);
  color: var(--black);
  font-family: var(--tech);
  font-size: 14px;
  font-weight: 700;
}

.product-card-cta {
  flex: 1;
}

.included .add-cart-wrapper {
  margin-top: 18px;
}

.included .add-cart-wrapper .button {
  flex: 1;
}

.card-body .add-cart-wrapper {
  margin-top: 12px;
}

.card-body .add-cart-wrapper .add-btn {
  flex: 1;
}

.dosing-calculator {
  padding: clamp(72px, 9vw, 140px) clamp(24px, 5vw, 88px);
  scroll-margin-top: 92px;
  border-top: 1px solid var(--gray-200);
}

.dosing-calculator h2 {
  font-size: clamp(32px, 3.5vw, 56px);
  font-weight: 400;
  margin: 0 0 40px;
}

.calculator-body {
  display: grid;
  grid-template-columns: minmax(300px, 0.45fr) minmax(360px, 1fr);
  gap: clamp(32px, 4vw, 64px);
  margin-top: 48px;
  align-items: start;
}

.calculator-form {
  display: grid;
  gap: 28px;
}

.form-group {
  display: grid;
  gap: 10px;
}

.form-group label {
  font-family: var(--tech);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-700);
}

.form-group label small {
  text-transform: none;
  color: var(--gray-400);
  font-size: 11px;
}

.form-group input,
.form-group select {
  width: 100%;
  height: 48px;
  border: 1px solid var(--gray-200);
  background: var(--white);
  color: var(--black);
  font-family: var(--tech);
  font-size: 14px;
  padding: 0 14px;
  -webkit-appearance: none;
  appearance: none;
  border-radius: 0;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--black);
}

.calculator-results .calc-result-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--gray-200);
  position: relative;
}

.calculator-results .calc-result-card .resource-line {
  display: block;
  width: 100%;
  height: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

@media (max-width: 1200px) {
  .science,
  .product-focus,
  .protocol-reveal {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
    gap: 32px;
    padding: 120px clamp(20px, 3vw, 48px) 80px;
  }

  .science-copy,
  .science-text,
  .timeline-panel {
    grid-column: 1;
    grid-row: auto;
  }

  .peptide-list {
    display: grid;
    grid-template-columns: repeat(5, minmax(120px, 1fr));
    gap: 14px;
    overflow-x: auto;
  }

  .peptide-list > span {
    grid-column: 1 / -1;
  }

  .outcome-tabs,
  .resource-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .timeline-panel {
    min-height: auto;
  }

  .biomarker-mobile {
    display: grid;
  }

  .chart-tooltip {
    display: none;
  }
}

@media (max-width: 720px) {
  .site-header {
    top: 10px;
    padding: 12px 14px;
  }

  nav {
    display: flex;
    gap: 10px;
  }

  nav a:not(.nav-cta) {
    display: none;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    padding: 96px 20px 40px;
    gap: 28px;
  }

  .hero-content {
    width: auto;
    padding: 0;
  }

  .hero-product-card {
    max-width: min(400px, 100%);
    margin: 0 auto;
    width: 100%;
  }

  .product-card-body {
    padding: 18px;
  }

  .product-card-specs {
    grid-template-columns: 1fr;
  }

  .hero-bg {
    background: url("assets/hero-mots-c-mobile.png") center bottom / cover no-repeat;
    filter: saturate(0.75);
  }

  section:not(.hero) {
    padding: 64px 24px;
  }

  .outcome-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .outcome-tabs::-webkit-scrollbar {
    display: none;
  }

  .outcome-tab {
    flex: 0 0 auto;
    min-height: auto;
    padding: 14px 18px;
    border: 1px solid var(--gray-200);
    text-align: left;
  }

  .outcome-tab strong {
    font-size: 16px;
    margin-bottom: 8px;
  }

  .outcome-tab small {
    font-size: 11px;
    max-width: none;
  }

  .resource-grid,
  .peptide-list {
    grid-template-columns: 1fr;
  }

  .protocol-reveal {
    padding: 26px;
  }

  .protocol-images,
  .image-placeholder-tall {
    min-height: 220px;
    padding: 16px;
  }

  .protocol-images {
    gap: 6px;
  }

  .protocol-images img {
    height: auto;
    width: auto;
    max-height: 220px;
    max-width: 100%;
    flex: 1 1 0;
    min-width: 0;
    clip-path: none;
    object-fit: contain;
  }

  .product-focus {
    gap: 28px;
  }

  .product-visual {
    min-height: auto;
  }

  .product-focus-image {
    max-height: 380px;
  }

  .product-data h2 {
    font-size: clamp(42px, 14vw, 62px);
  }

  dl div {
    grid-template-columns: 110px 1fr;
  }

  .timeline-header {
    margin-bottom: 24px;
  }

  .button {
    width: 100%;
  }

  .calculator-body {
    grid-template-columns: 1fr;
  }
}

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

  .hero-inner h1 {
    font-size: clamp(42px, 14vw, 68px);
  }

  .research-note {
    margin-top: 44px;
  }

  .product-card-visual {
    aspect-ratio: 1 / 1;
  }

  .product-card-body h3 {
    font-size: 24px;
  }

  .product-card-cta {
    min-height: 52px;
  }

  .add-cart-wrapper {
    gap: 8px;
  }

  .qty-btn {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }

  .qty-value {
    width: 48px;
    height: 40px;
    font-size: 13px;
  }

  .biomarker-mobile {
    display: grid;
  }

  .chart-tooltip {
    display: none;
  }

  .biomarker-legend {
    gap: 12px;
  }
}