/* ================================================================
   BluH2 homepage
   Desktop-first editorial system with intentional tablet/mobile rules
   ================================================================ */

:root {
  --ink: #071526;
  --ink-soft: #14243a;
  --navy: #07111f;
  --navy-2: #0a2036;
  --ocean: #0b3f69;
  --blue: #149bd7;
  --blue-bright: #1eb7ee;
  --cyan: #77dcf5;
  --mist: #eef4f7;
  --mist-blue: #e5f2f8;
  --paper: #fbfcfc;
  --white: #ffffff;
  --line: #d8e1e7;
  --line-dark: rgba(255, 255, 255, 0.15);
  --text-muted: #496078;
  --text-on-dark: #bac8d7;
  --success: #32b47c;
  --font-sans: "Onest", "Segoe UI Variable", "Segoe UI", Arial, sans-serif;
  --radius-sm: 12px;
  --radius-md: 22px;
  --radius-lg: 34px;
  --shadow-soft: 0 24px 70px rgba(7, 21, 38, 0.11);
  --shell: min(1280px, calc(100% - 64px));
  --section-space: clamp(92px, 9vw, 144px);
  --transition: 180ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  min-width: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

body.home {
  --home-announcement-height: 32px;
}

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

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

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 4px;
}

::selection {
  color: var(--white);
  background: var(--ocean);
}

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

h1,
h2,
h3 {
  letter-spacing: -0.045em;
  line-height: 1.04;
}

h2 {
  margin-bottom: 24px;
  font-size: clamp(2.55rem, 5vw, 4.8rem);
  font-weight: 600;
}

h3 {
  font-size: 1.32rem;
  font-weight: 600;
}

sub {
  font-size: 0.58em;
  line-height: 0;
}

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

.section-shell {
  width: var(--shell);
  margin-inline: auto;
}

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

.skip-link {
  position: fixed;
  z-index: 2000;
  top: 16px;
  left: 16px;
  padding: 12px 18px;
  color: var(--ink);
  background: var(--white);
  border-radius: var(--radius-sm);
  transform: translateY(-150%);
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateY(0);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  color: var(--ocean);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  line-height: 1.3;
  text-transform: uppercase;
}

.eyebrow-on-dark {
  color: var(--cyan);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 14px 24px;
  border: 1px solid transparent;
  border-radius: 7px;
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 650;
  line-height: 1;
  transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition);
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(0);
}

.button-primary {
  color: var(--white);
  background: var(--blue);
  border-color: var(--blue);
}

.button-primary:hover {
  background: #087fb8;
  border-color: #087fb8;
}

.button-light {
  color: var(--ink);
  background: var(--white);
  border-color: var(--white);
}

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

.button-ghost {
  color: var(--white);
  background: transparent;
  border-color: rgba(255, 255, 255, 0.38);
}

.button-ghost:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.button-small {
  min-height: 44px;
  padding: 10px 18px;
  font-size: 0.82rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 5px;
  border-bottom: 1px solid currentColor;
  font-size: 0.91rem;
  font-weight: 650;
  transition: gap var(--transition), color var(--transition);
}

.text-link:hover {
  gap: 22px;
  color: var(--blue);
}

/* Announcement and header */
.home-announcement {
  position: fixed;
  z-index: 1100;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  min-height: var(--home-announcement-height);
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding-inline: 18px;
  color: #dce8f1;
  background: var(--navy);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.045em;
  line-height: 1.2;
}

.home-announcement svg {
  width: 21px;
  height: 17px;
  color: var(--cyan);
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.25;
}

body.home .site-header {
  top: var(--home-announcement-height);
}

.site-header {
  position: fixed;
  z-index: 1000;
  top: 0;
  right: 0;
  left: 0;
  color: var(--white);
  border-bottom: 1px solid transparent;
  transition: background 250ms ease, border-color 250ms ease, box-shadow 250ms ease;
}

.site-header::before {
  position: absolute;
  z-index: -1;
  inset: 0 0 -28px;
  content: "";
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(2, 8, 16, 0.65), transparent);
  transition: opacity var(--transition);
}

.site-header.is-scrolled,
.site-header.menu-visible {
  background: rgba(5, 16, 29, 0.97);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.13);
  backdrop-filter: blur(18px);
}

.site-header.is-scrolled::before,
.site-header.menu-visible::before {
  opacity: 0;
}

.header-inner {
  display: grid;
  width: var(--shell);
  min-height: 84px;
  align-items: center;
  margin-inline: auto;
  grid-template-columns: 160px 1fr auto;
  gap: 28px;
}

.brand {
  position: relative;
  display: inline-flex;
  width: 118px;
  aspect-ratio: 520 / 204;
}

.brand-logo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: auto;
  transition: opacity 180ms ease;
}

.brand-logo-colour {
  opacity: 0;
}

.desktop-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 2.2vw, 34px);
  font-size: 0.82rem;
  font-weight: 600;
}

.desktop-nav a {
  position: relative;
  padding-block: 10px;
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition);
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: 5px;
  left: 0;
  height: 1px;
  content: "";
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition);
}

.desktop-nav a:hover {
  color: var(--white);
}

.desktop-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 13px;
}

.cart-button,
.menu-toggle {
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  color: var(--white);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
}

.cart-button:hover,
.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.65);
}

.cart-glyph {
  position: absolute;
  width: 16px;
  height: 14px;
  top: 15px;
  left: 13px;
  border: 1.5px solid currentColor;
  border-radius: 3px;
}

.cart-glyph::before {
  position: absolute;
  width: 7px;
  height: 5px;
  top: -6px;
  left: 3px;
  content: "";
  border: 1.5px solid currentColor;
  border-bottom: 0;
  border-radius: 5px 5px 0 0;
}

.cart-count {
  position: absolute;
  top: -4px;
  right: -4px;
  display: grid;
  width: 19px;
  height: 19px;
  place-items: center;
  color: var(--ink);
  background: var(--cyan);
  border-radius: 50%;
  font-size: 0.65rem;
  font-weight: 700;
}

.menu-toggle,
.mobile-menu {
  display: none;
}

@media (min-width: 901px) {
  .site-header.is-scrolled {
    color: var(--ink);
    background: rgba(255, 255, 255, 0.97);
    border-color: rgba(7, 21, 38, 0.1);
    box-shadow: 0 10px 30px rgba(7, 21, 38, 0.1);
  }

  .site-header.is-scrolled .header-inner {
    min-height: 68px;
  }

  .site-header.is-scrolled .brand {
    width: 104px;
  }

  .site-header.is-scrolled .brand-logo-white {
    opacity: 0;
  }

  .site-header.is-scrolled .brand-logo-colour {
    opacity: 1;
  }

  .site-header.is-scrolled .desktop-nav a {
    color: #31465d;
  }

  .site-header.is-scrolled .desktop-nav a:hover {
    color: var(--ocean);
  }

  .site-header.is-scrolled .cart-button {
    color: var(--ink);
    border-color: rgba(7, 21, 38, 0.2);
  }

  .site-header.is-scrolled .cart-button:hover {
    background: var(--mist-blue);
    border-color: rgba(7, 21, 38, 0.4);
  }

  .site-header.is-scrolled .header-shop {
    color: var(--white);
    background: var(--blue);
    border-color: var(--blue);
  }
}

/* Hero */
.hero {
  position: relative;
  min-height: 860px;
  overflow: hidden;
  color: var(--white);
  background: #030912;
}

.hero::after {
  position: absolute;
  z-index: 1;
  inset: 0;
  content: "";
  pointer-events: none;
  background: linear-gradient(90deg, rgba(2, 8, 15, 0.96) 0%, rgba(3, 12, 22, 0.86) 36%, rgba(4, 15, 27, 0.22) 68%, rgba(4, 15, 27, 0.05) 100%);
}

.hero-background {
  position: absolute;
  z-index: 0;
  inset: 0;
  width: 100%;
  max-width: none;
  height: 100%;
  object-fit: cover;
  object-position: center bottom;
  transform: scale(0.94);
  transform-origin: center bottom;
}

@media (min-aspect-ratio: 16 / 9) and (min-width: 901px) {
  .hero-background {
    object-fit: contain;
    object-position: right bottom;
  }
}

.hero-grain {
  position: absolute;
  z-index: 2;
  inset: 0;
  opacity: 0.22;
  pointer-events: none;
  background-image:
    linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, 0.03) 50%, transparent 70%),
    repeating-linear-gradient(0deg, transparent 0 3px, rgba(255, 255, 255, 0.012) 4px);
}

.hero-inner {
  position: relative;
  z-index: 3;
  display: flex;
  width: var(--shell);
  min-height: 860px;
  align-items: center;
  margin-inline: auto;
  padding-top: 96px;
}

.hero-copy {
  max-width: 690px;
  padding-block: 90px 110px;
}

.hero h1 {
  margin: 0 0 30px;
  font-size: clamp(4.4rem, 7.3vw, 7.3rem);
  font-weight: 400;
  line-height: 0.91;
}

.hero h1 span {
  font-weight: 650;
}

.hero-lede {
  max-width: 560px;
  margin-bottom: 34px;
  color: var(--text-on-dark);
  font-size: clamp(1.02rem, 1.6vw, 1.26rem);
  line-height: 1.55;
}

.hero-details {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  padding: 25px 0 0;
  margin: 0;
  color: #a9bbcc;
  list-style: none;
  font-size: 0.72rem;
}

.hero-details li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-details li img {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  filter: brightness(0) saturate(100%) invert(83%) sepia(21%) saturate(924%) hue-rotate(156deg) brightness(105%) contrast(93%);
}

.hero-visual {
  position: relative;
  align-self: stretch;
  min-height: 720px;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background: #071525;
  isolation: isolate;
}

.hero-visual::after {
  position: absolute;
  z-index: 1;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, rgba(4, 17, 31, 0.28), transparent 34%);
  pointer-events: none;
}

.hero-image,
.product-media img,
.benefit-media img,
.cta-media img,
.story-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  max-width: none;
  height: 100%;
  object-fit: cover;
}

.hero-image {
  object-position: 78% center;
}

.hero-scroll {
  position: absolute;
  z-index: 4;
  bottom: 32px;
  left: 50%;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.hero-scroll span {
  width: 18px;
  height: 28px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 10px;
}

.hero-scroll span::after {
  display: block;
  width: 2px;
  height: 5px;
  margin: 5px auto;
  content: "";
  background: var(--cyan);
  border-radius: 1px;
}

/* Trust strip */
.trust-strip {
  position: relative;
  z-index: 6;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.trust-track {
  display: grid;
  width: var(--shell);
  min-height: 108px;
  align-items: stretch;
  margin-inline: auto;
  grid-template-columns: repeat(5, 1fr);
}

.trust-track::-webkit-scrollbar {
  display: none;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  border-right: 1px solid var(--line);
}

.trust-item:first-child {
  padding-left: 0;
}

.trust-item:last-child {
  padding-right: 0;
  border-right: 0;
}

.trust-icon {
  display: grid;
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  place-items: center;
}

.trust-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: brightness(0) saturate(100%) invert(45%) sepia(88%) saturate(1247%) hue-rotate(161deg) brightness(91%) contrast(91%);
}

.trust-item p {
  margin: 0;
  color: #33445a;
  font-size: 0.76rem;
  font-weight: 600;
  line-height: 1.35;
}

/* Product */
.product-section {
  background: var(--mist);
}

.product-layout {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 1.05fr) minmax(440px, 0.95fr);
  gap: clamp(64px, 8vw, 124px);
}

.product-media {
  position: relative;
  min-height: 730px;
  overflow: hidden;
  background: #e5edf7;
  border: 1px solid rgba(7, 21, 38, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.product-media img {
  object-position: center;
}

.product-info h2 {
  margin-bottom: 22px;
  font-size: clamp(3rem, 5vw, 5rem);
}

.product-intro {
  max-width: 570px;
  margin-bottom: 30px;
  color: var(--text-muted);
  font-size: 1.04rem;
}

.feature-list {
  padding: 0;
  margin: 0 0 32px;
  list-style: none;
  border-top: 0;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 18px;
  padding-block: 10px;
  border-bottom: 1px solid #c9d5dc;
  color: #26374d;
  font-size: 0.89rem;
  font-weight: 550;
}

.feature-list li span {
  min-width: 24px;
  color: var(--blue);
  font-size: 0.65rem;
  font-weight: 700;
}

.feature-list li img {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
}

.product-price-row {
  display: flex;
  align-items: flex-end;
  gap: 18px;
  padding-bottom: 22px;
}

.field-label {
  display: block;
  margin-bottom: 2px;
  color: var(--text-muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.product-price {
  margin: 0;
  font-size: 2rem;
  font-weight: 650;
  letter-spacing: -0.04em;
}

.product-price small {
  margin-left: 6px;
  color: var(--text-muted);
  font-size: 0.67rem;
  font-weight: 500;
  letter-spacing: 0;
}

.stock-note {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  color: var(--text-muted);
  font-size: 0.72rem;
}

.stock-note span {
  width: 7px;
  height: 7px;
  background: #d69b2a;
  border-radius: 50%;
}

.product-perks {
  display: grid;
  padding: 0;
  margin-bottom: 24px;
  grid-template-columns: repeat(3, 1fr);
  border: 0;
  list-style: none;
}

.product-perks li {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 8px;
  padding: 14px 12px;
  border: 0;
  line-height: 1.25;
}

.product-perks li:first-child {
  padding-left: 0;
}

.product-perks li:last-child {
  padding-right: 0;
  border-right: 0;
}

.support-icon {
  display: grid;
  width: 50px;
  height: 50px;
  flex: 0 0 50px;
  place-items: center;
  color: var(--ink);
}

.support-icon svg {
  width: 29px;
  height: 29px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.55;
}

.product-perks strong {
  font-size: 0.72rem;
  line-height: 1.35;
}

.purchase-row {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 12px;
}

.product-info > .purchase-row + .text-link,
.product-info > form.purchase-row + .text-link {
  display: inline-flex;
  margin-top: 14px;
}

.quantity-control {
  display: grid;
  min-height: 56px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid #aebdc7;
  border-radius: 7px;
  grid-template-columns: 38px 1fr 38px;
}

.quantity-control button,
.quantity-control input {
  width: 100%;
  min-width: 0;
  padding: 0;
  text-align: center;
  background: transparent;
  border: 0;
}

.quantity-control button {
  cursor: pointer;
  transition: background var(--transition);
}

.quantity-control button:hover {
  background: var(--mist-blue);
}

.quantity-control input {
  appearance: textfield;
  font-size: 0.85rem;
  font-weight: 650;
}

.quantity-control input::-webkit-outer-spin-button,
.quantity-control input::-webkit-inner-spin-button {
  margin: 0;
  appearance: none;
}

.add-to-cart {
  width: 100%;
}

.purchase-status {
  min-height: 22px;
  margin: 8px 0 7px;
  color: var(--success);
  font-size: 0.72rem;
}

/* Benefits */
.benefits-section {
  background: var(--white);
}

.section-heading {
  margin-bottom: clamp(52px, 6vw, 80px);
}

.split-heading {
  display: grid;
  align-items: end;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
  gap: 64px;
}

.split-heading h2 {
  margin-bottom: 0;
}

.split-heading > p {
  max-width: 500px;
  margin-bottom: 6px;
  color: var(--text-muted);
}

.benefits-editorial {
  display: grid;
  align-items: stretch;
  grid-template-columns: minmax(0, 1.1fr) minmax(420px, 0.9fr);
  gap: clamp(48px, 7vw, 100px);
}

.benefit-media {
  position: relative;
  min-height: 700px;
  overflow: hidden;
  background: #aab6bb;
  border-radius: var(--radius-md);
}

.benefit-media::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(to top, rgba(5, 24, 40, 0.12), transparent 42%);
  pointer-events: none;
}

.benefit-media img {
  object-position: 50% 52%;
}

.benefit-list {
  display: flex;
  padding: 0;
  margin: 0;
  flex-direction: column;
  justify-content: center;
  list-style: none;
  counter-reset: benefits;
}

.benefit-list li {
  display: grid;
  min-height: 146px;
  align-items: center;
  padding-block: 18px;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 68px 1fr;
  gap: 16px;
}

.benefit-list li:first-child {
  border-top: 1px solid var(--line);
}

.benefit-icon-asset {
  position: relative;
  display: block;
  width: 58px;
  height: 58px;
  overflow: visible;
  line-height: 0;
}

.benefit-icon-asset img {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 108px;
  max-width: none;
  height: auto;
  object-fit: contain;
  opacity: 0.82;
  transform: translate(-50%, -50%) scale(0.96);
  transform-origin: center;
}

.benefit-list li:nth-child(2) .benefit-icon-asset img {
  width: 131px;
}

.benefit-list li:nth-child(3) .benefit-icon-asset img {
  width: 129px;
}

.benefit-list li:nth-child(4) .benefit-icon-asset img {
  width: 115px;
}

.benefit-list h3 {
  margin-bottom: 9px;
}

.benefit-list p {
  max-width: 470px;
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Explainer */
.explainer-section {
  overflow: hidden;
  background: #f4f1eb;
}

.explainer-shell {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(360px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(64px, 8vw, 120px);
}

.explainer-copy p:not(.eyebrow) {
  max-width: 520px;
  color: #536276;
}

.explainer-copy p + p {
  margin-top: 18px;
}

.molecule-comparison {
  position: relative;
  display: grid;
  align-items: stretch;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.molecule-panel {
  position: relative;
  min-height: 490px;
  padding: 24px;
  overflow: hidden;
  color: var(--white);
  background: var(--navy);
  border-radius: var(--radius-md);
}

.molecule-panel + .molecule-panel {
  background: var(--ocean);
}

.molecule-panel-top {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 18px;
  color: #c7d2de;
  border-bottom: 1px solid var(--line-dark);
  font-size: 0.76rem;
}

.molecule-panel-top strong {
  color: var(--white);
  font-size: 0.92rem;
}

.molecule-panel > p {
  position: absolute;
  z-index: 2;
  right: 24px;
  bottom: 22px;
  left: 24px;
  margin: 0;
  color: #b9c8d8;
  font-size: 0.8rem;
  line-height: 1.45;
}

.molecule-stage {
  position: absolute;
  inset: 72px 0 58px;
}

.molecule {
  position: absolute;
  display: grid;
  width: 130px;
  height: 130px;
  place-items: center;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  font-size: 1rem;
  font-weight: 650;
  box-shadow: inset 0 0 30px rgba(255, 255, 255, 0.06);
}

.molecule::before {
  position: absolute;
  inset: -10px;
  content: "";
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 50%;
}

.molecule-water {
  top: 25%;
  left: 19%;
}

.molecule-water.small {
  top: 55%;
  left: 58%;
  width: 82px;
  height: 82px;
  opacity: 0.72;
  font-size: 0.7rem;
}

.molecule-water.tiny {
  top: 9%;
  left: 66%;
  width: 54px;
  height: 54px;
  opacity: 0.4;
  font-size: 0.55rem;
}

.molecule-hydrogen {
  top: 12%;
  right: 14%;
  width: 74px;
  height: 74px;
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 34px rgba(119, 220, 245, 0.3);
}

.molecule-hydrogen.tiny {
  top: 64%;
  right: 56%;
  width: 48px;
  height: 48px;
  font-size: 0.62rem;
}

.comparison-plus {
  position: absolute;
  z-index: 5;
  top: 50%;
  left: 50%;
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  color: var(--ink);
  background: var(--white);
  border-radius: 50%;
  font-size: 1.4rem;
  transform: translate(-50%, -50%);
  box-shadow: 0 12px 28px rgba(6, 17, 31, 0.25);
}

/* Process */
.process-section {
  overflow: hidden;
  background: #f7f9fb;
}

.centred-heading {
  max-width: 800px;
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.centred-heading .eyebrow {
  justify-content: center;
}

.centred-heading h2 {
  margin-bottom: 0;
}

.process-heading {
  max-width: 960px;
  margin-bottom: 42px;
}

.process-layout {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(340px, 0.86fr) minmax(460px, 1.14fr);
  gap: clamp(56px, 8vw, 120px);
}

.process-product {
  position: relative;
  min-width: 0;
  height: 700px;
  margin: 0;
  overflow: hidden;
  background: #161b22;
  border: 1px solid #d2dbe2;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.process-product img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.process-steps {
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.process-steps li {
  display: grid;
  align-items: start;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 50px 1fr;
  gap: 20px;
}

.process-steps .process-number {
  width: 42px;
  height: 42px;
  margin: 0;
  color: var(--white);
  background: var(--blue);
  border: 0;
  box-shadow: none;
}

.process-steps h3 {
  margin-bottom: 7px;
  font-size: 1.18rem;
}

.process-steps p {
  max-width: 560px;
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.process-number {
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  margin: 0 auto 25px;
  color: var(--ocean);
  background: var(--white);
  border: 1px solid #a7c1ce;
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 700;
  box-shadow: 0 0 0 10px var(--white);
}

/* Dark CTA */
.cta-section {
  padding-top: 0;
  background: #f7f9fb;
}

.dark-cta {
  position: relative;
  display: grid;
  min-height: 600px;
  overflow: hidden;
  color: var(--white);
  background: linear-gradient(105deg, #030913 0%, #071726 52%, #0a3554 100%);
  border-radius: var(--radius-lg);
  grid-template-columns: 1.16fr 0.84fr;
}

.dark-cta-copy {
  position: relative;
  z-index: 3;
  display: flex;
  padding: clamp(56px, 7vw, 96px);
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.dark-cta h2 {
  font-size: clamp(3.2rem, 4.8vw, 5.2rem);
}

.dark-cta-copy > p:not(.eyebrow) {
  max-width: 660px;
  margin-bottom: 32px;
  color: var(--text-on-dark);
}

.cta-media {
  position: relative;
  min-height: 100%;
  overflow: hidden;
  background: #071726;
}

.cta-media img {
  object-position: 50% 46%;
}

/* Science */
.science-section {
  color: var(--white);
  background: var(--navy);
}

.science-heading {
  display: grid;
  align-items: end;
  margin-bottom: 70px;
  grid-template-columns: 1fr auto;
}

.science-heading .eyebrow,
.science-heading h2 {
  grid-column: 1;
}

.science-heading .eyebrow {
  color: #d7e8f4;
}

.science-heading h2 {
  max-width: 830px;
  margin-bottom: 22px;
}

.science-description {
  max-width: 760px;
  margin: 0;
  color: var(--text-on-dark);
  font-size: 1.04rem;
  line-height: 1.65;
  grid-column: 1;
}

.science-heading .text-link {
  grid-column: 2;
  grid-row: 2;
  color: var(--cyan);
}

.evidence-strip {
  display: grid;
  border-block: 1px solid var(--line-dark);
  grid-template-columns: repeat(3, 1fr);
}

.evidence-strip article {
  display: flex;
  min-height: 255px;
  padding: 40px 34px;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--line-dark);
}

.evidence-strip article:first-child {
  padding-left: 0;
}

.evidence-strip article:last-child {
  padding-right: 0;
  border-right: 0;
}

.evidence-strip strong,
.evidence-strip span {
  display: block;
}

.evidence-strip strong {
  margin-bottom: 13px;
  color: var(--white);
  font-size: clamp(2.6rem, 4.4vw, 4.6rem);
  font-weight: 500;
  letter-spacing: -0.065em;
  line-height: 0.95;
}

.evidence-strip span {
  max-width: 300px;
  color: #cad8e4;
  font-size: 1.12rem;
  font-weight: 500;
  line-height: 1.35;
}

.science-content {
  display: grid;
  border-top: 1px solid var(--line-dark);
  grid-template-columns: repeat(3, 1fr) 0.8fr;
}

.science-content article,
.science-stat {
  min-height: 360px;
  padding: 34px 30px;
  border-right: 1px solid var(--line-dark);
}

.science-content article:first-child {
  padding-left: 0;
}

.science-content article > span {
  display: block;
  margin-bottom: 86px;
  color: var(--cyan);
  font-size: 0.7rem;
  font-weight: 700;
}

.science-content h3 {
  max-width: 230px;
  margin-bottom: 15px;
  font-size: 1.25rem;
}

.science-content article p {
  margin: 0;
  color: var(--text-on-dark);
  font-size: 0.84rem;
  line-height: 1.65;
}

.science-stat {
  display: flex;
  padding-right: 0;
  flex-direction: column;
  justify-content: space-between;
  border-right: 0;
}

.science-stat p {
  margin: 0;
}

.science-stat strong,
.science-stat span {
  display: block;
}

.science-stat strong {
  margin-bottom: 12px;
  color: var(--cyan);
  font-size: clamp(2.6rem, 4vw, 4rem);
  font-weight: 500;
  letter-spacing: -0.06em;
  line-height: 0.95;
}

.science-stat span,
.science-stat small {
  color: #9dafc1;
  font-size: 0.7rem;
}

.science-stat small {
  line-height: 1.55;
}

/* Testimonials */
.testimonial-section {
  color: var(--white);
  background: var(--navy);
}

.testimonial-shell {
  display: grid;
  align-items: start;
  grid-template-columns: 0.78fr 1.22fr;
  gap: clamp(64px, 9vw, 130px);
}

.testimonial-heading {
  position: sticky;
  top: 130px;
}

.testimonial-heading h2 {
  font-size: clamp(2.8rem, 4.8vw, 4.7rem);
}

.testimonial-heading > p:not(.eyebrow) {
  max-width: 420px;
  color: var(--text-on-dark);
  font-size: 0.84rem;
}

.testimonial-list {
  border-top: 1px solid var(--line-dark);
}

.testimonial-list blockquote {
  margin: 0;
  padding: 52px 0;
  border-bottom: 1px solid var(--line-dark);
}

.testimonial-list blockquote > p {
  margin-bottom: 34px;
  color: #edf5fa;
  font-size: clamp(1.5rem, 2.4vw, 2.3rem);
  letter-spacing: -0.035em;
  line-height: 1.35;
}

.testimonial-list footer {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.testimonial-list footer strong {
  font-size: 0.88rem;
}

.testimonial-list footer span {
  color: var(--cyan);
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

/* Story */
.story-section {
  background: var(--white);
}

.story-layout {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 1.02fr) minmax(420px, 0.98fr);
  gap: clamp(64px, 9vw, 130px);
}

.story-media {
  position: relative;
  min-height: 660px;
  overflow: hidden;
  background: #d6b46e;
  border-radius: var(--radius-md);
}

.story-media::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(to top, rgba(3, 16, 28, 0.16), transparent 42%);
  pointer-events: none;
}

.story-media img {
  object-position: center;
}

.story-copy > p:not(.eyebrow) {
  max-width: 560px;
  color: var(--text-muted);
}

.story-copy > p + p {
  margin-top: 19px;
}

.founder-signoff {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-block: 28px;
  margin-block: 12px 8px;
  border-top: 1px solid var(--line);
}

.founder-signoff p,
.founder-signoff strong,
.founder-signoff span {
  display: block;
  margin: 0;
}

.founder-signoff strong {
  font-size: 0.82rem;
}

.founder-signoff p span {
  color: var(--text-muted);
  font-size: 0.7rem;
}

/* Comparison */
.comparison-section {
  background: #f4f1eb;
}

.comparison-table-wrap {
  max-width: 1040px;
  padding: 28px;
  overflow: hidden;
  margin-inline: auto;
  background: #f4f1eb;
  border: 0;
  border-radius: var(--radius-md);
}

.comparison-table {
  width: 100%;
  overflow: hidden;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 12px;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid #e2e8ec;
  text-align: left;
  vertical-align: middle;
}

.comparison-table thead th {
  height: 66px;
  color: var(--ink);
  background: var(--white);
  font-size: 1.06rem;
  letter-spacing: -0.02em;
  text-align: center;
  text-transform: none;
}

.comparison-table thead th:first-child {
  border-radius: 12px 0 0;
  text-align: left;
}

.comparison-table thead th:last-child {
  border-radius: 0 12px 0 0;
}

.comparison-table thead th:nth-child(2) {
  color: var(--white);
  background: var(--blue);
  border-radius: 0;
}

.comparison-logo {
  display: block;
  width: 104px;
  height: auto;
  margin-inline: auto;
  filter: none;
}

.comparison-table tbody th {
  width: 50%;
  color: #2a3542;
  background: var(--white);
  font-size: 0.84rem;
  font-weight: 650;
}

.comparison-table tbody td {
  width: 25%;
  color: #283442;
  background: var(--white);
  font-size: 0.78rem;
  text-align: center;
}

.comparison-table tbody td:nth-child(2) {
  color: var(--white);
  background: var(--blue);
  font-weight: 650;
}

.comparison-table tbody td small {
  display: block;
  margin-top: 5px;
  color: inherit;
  font-size: 0.64rem;
  line-height: 1.3;
}

.comparison-cell-copy {
  display: block;
  color: inherit;
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.3;
}

.comparison-mark,
.comparison-cross {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  margin-inline: auto;
  border-radius: 50%;
  font-size: 1.1rem;
  font-weight: 700;
}

.comparison-mark {
  color: var(--blue);
  background: var(--white);
}

.comparison-cross {
  color: var(--blue);
  font-size: 1.6rem;
  font-weight: 400;
}

.comparison-table tbody tr:last-child th,
.comparison-table tbody tr:last-child td {
  border-bottom: 0;
}

.comparison-table tbody tr:last-child td:nth-child(2) {
  border-radius: 0;
}

.comparison-table tbody tr:last-child th:first-child {
  border-radius: 0 0 0 12px;
}

.comparison-table tbody tr:last-child td:last-child {
  border-radius: 0 0 12px;
}

.table-note {
  margin: 0;
  padding: 18px 4px 0;
  color: #778798;
  background: transparent;
  border-top: 0;
  font-size: 0.67rem;
}

/* Guarantee */
.guarantee-section {
  padding-block: 74px;
  background: #e9f2f4;
  border-block: 1px solid #d2e1e5;
}

.guarantee-inner {
  display: grid;
  align-items: center;
  grid-template-columns: 170px 1fr 0.65fr;
  gap: clamp(36px, 6vw, 82px);
}

.guarantee-seal {
  display: grid;
  width: 148px;
  height: 148px;
  place-content: center;
  color: var(--ocean);
  background: var(--white);
  border: 1px solid #83b5ca;
  border-radius: 50%;
  text-align: center;
  box-shadow: 0 0 0 8px rgba(255, 255, 255, 0.55), 0 16px 40px rgba(7, 45, 67, 0.12);
}

.guarantee-seal span,
.guarantee-seal small {
  display: block;
}

.guarantee-seal span {
  font-size: 3.4rem;
  font-weight: 650;
  letter-spacing: -0.08em;
  line-height: 0.95;
}

.guarantee-seal small {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.guarantee-copy .eyebrow {
  margin-bottom: 14px;
}

.guarantee-copy h2 {
  margin-bottom: 15px;
  font-size: clamp(2.4rem, 4vw, 4rem);
}

.guarantee-title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 13px;
}

.guarantee-title img {
  width: 138px;
  height: auto;
}

.guarantee-copy > p:not(.eyebrow) {
  max-width: 650px;
  margin-bottom: 20px;
  color: var(--text-muted);
}

.guarantee-copy .guarantee-tagline {
  margin-bottom: 8px;
  color: var(--ocean);
  font-size: 0.88rem;
  font-weight: 650;
}

.guarantee-details {
  padding-left: 36px;
  border-left: 1px solid #c4d6dc;
}

.guarantee-details p {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  padding-block: 10px;
  color: #3a4b5c;
  border-bottom: 1px solid #cedde2;
  font-size: 0.78rem;
  font-weight: 600;
}

.guarantee-details p:last-child {
  border-bottom: 0;
}

.guarantee-details .support-icon {
  width: 28px;
  height: 28px;
  flex-basis: 28px;
}

.guarantee-details .support-icon svg {
  width: 21px;
  height: 21px;
}

/* FAQ */
.faq-section {
  background: var(--white);
}

.faq-layout {
  display: grid;
  align-items: start;
  grid-template-columns: 0.72fr 1.28fr;
  gap: clamp(64px, 9vw, 130px);
}

.faq-heading {
  position: sticky;
  top: 130px;
}

.faq-heading h2 {
  font-size: clamp(2.9rem, 4.8vw, 4.8rem);
}

.faq-heading > p:not(.eyebrow) {
  margin-bottom: 28px;
  color: var(--text-muted);
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 44px 20px 0;
  cursor: pointer;
  font-size: 0.96rem;
  font-weight: 650;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary span {
  position: absolute;
  top: 50%;
  right: 8px;
  width: 18px;
  height: 18px;
  transform: translateY(-50%);
}

.faq-list summary span::before,
.faq-list summary span::after {
  position: absolute;
  top: 8px;
  left: 2px;
  width: 14px;
  height: 1px;
  content: "";
  background: var(--ink);
  transition: transform var(--transition);
}

.faq-list summary span::after {
  transform: rotate(90deg);
}

.faq-list details[open] summary span::after {
  transform: rotate(0);
}

.faq-list details > p {
  max-width: 680px;
  padding: 0 50px 24px 0;
  margin: -4px 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Newsletter */
.newsletter-section {
  color: var(--white);
  background: var(--ocean);
  border-bottom: 1px solid var(--line-dark);
}

.newsletter-inner {
  display: grid;
  min-height: 330px;
  align-items: center;
  padding-block: 66px;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
}

.newsletter-inner h2 {
  margin-bottom: 14px;
  font-size: clamp(2.8rem, 4.7vw, 4.7rem);
}

.newsletter-inner > div > p:not(.eyebrow) {
  max-width: 520px;
  margin: 0;
  color: var(--text-on-dark);
}

.newsletter-control {
  display: grid;
  padding: 7px;
  background: var(--white);
  border-radius: 8px;
  grid-template-columns: 1fr auto;
}

.newsletter-control input {
  width: 100%;
  min-width: 0;
  padding: 12px 16px;
  color: var(--ink);
  background: transparent;
  border: 0;
}

.newsletter-control input:focus {
  outline: 0;
}

.newsletter-control .button-light {
  min-height: 48px;
  color: var(--white);
  background: var(--ink);
  border-color: var(--ink);
}

.newsletter-control .button-light:hover {
  color: var(--white);
  background: var(--ocean);
  border-color: var(--ocean);
}

.form-note {
  margin: 10px 0 0;
  color: #879caf;
  font-size: 0.66rem;
}

.form-note span {
  color: var(--cyan);
}

/* Footer */
.site-footer {
  color: var(--white);
  background: var(--navy);
}

.footer-grid {
  display: grid;
  padding-block: 80px 62px;
  grid-template-columns: 1.5fr repeat(3, 0.65fr);
  gap: clamp(44px, 6vw, 90px);
}

.footer-brand img {
  width: 126px;
  height: auto;
  margin-bottom: 24px;
}

.footer-brand > p {
  max-width: 310px;
  color: #9babbc;
  font-size: 0.82rem;
}

.social-links {
  display: flex;
  gap: 9px;
  margin-top: 24px;
}

.social-links a {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #c5d2dc;
  border: 1px solid #314052;
  border-radius: 50%;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.social-links a:hover,
.social-links a:focus-visible {
  color: var(--cyan);
  background: rgba(119, 220, 245, 0.08);
  border-color: var(--cyan);
}

.social-links svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}

.social-links .social-icon-fill {
  fill: currentColor;
  stroke: none;
}

.footer-grid nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.footer-grid nav h2 {
  margin-bottom: 10px;
  color: #718398;
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.footer-grid nav a {
  color: #c0ccd6;
  font-size: 0.78rem;
  transition: color var(--transition);
}

.footer-grid nav a:hover {
  color: var(--cyan);
}

.footer-bottom {
  display: flex;
  min-height: 90px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-top: 1px solid #202c3b;
}

.footer-bottom > p {
  margin: 0;
  color: #77899b;
  font-size: 0.68rem;
}

.payment-methods {
  display: flex;
  align-items: center;
}

.payment-methods img {
  width: 116px;
  height: auto;
  opacity: 0.92;
}

.science-notice {
  padding-block: 22px 34px;
  color: #5f7183;
  border-top: 1px solid #202c3b;
  font-size: 0.62rem;
  text-align: center;
}

.science-notice p {
  max-width: 1080px;
  margin: 0 auto;
}

.toast {
  position: fixed;
  z-index: 1500;
  right: 22px;
  bottom: 22px;
  max-width: min(360px, calc(100% - 44px));
  padding: 14px 18px;
  color: var(--white);
  background: var(--ink);
  border: 1px solid #3a4b60;
  border-radius: 8px;
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.25);
  font-size: 0.78rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition);
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Tablet */
@media (max-width: 1100px) {
  :root {
    --shell: min(100% - 48px, 980px);
    --section-space: 104px;
  }

  .header-inner {
    grid-template-columns: 130px 1fr auto;
  }

  .desktop-nav {
    gap: 17px;
  }

  .desktop-nav a {
    font-size: 0.74rem;
  }

  .hero-inner {
    min-height: 820px;
  }

  .hero h1 {
    font-size: clamp(4rem, 7.8vw, 5.7rem);
  }

  .trust-track {
    overflow-x: auto;
    grid-template-columns: repeat(5, minmax(210px, 1fr));
    scrollbar-width: none;
  }

  .trust-item:first-child {
    padding-left: 22px;
  }

  .product-layout {
    grid-template-columns: minmax(0, 1fr) minmax(390px, 0.9fr);
    gap: 54px;
  }

  .product-media {
    min-height: 650px;
  }

  .benefits-editorial {
    grid-template-columns: 1fr 0.9fr;
    gap: 52px;
  }

  .benefit-list li {
    grid-template-columns: 64px 1fr;
    gap: 16px;
  }

  .benefit-icon-asset {
    width: 54px;
    height: 54px;
  }

  .benefit-icon-asset img {
    width: 101px;
  }

  .benefit-list li:nth-child(2) .benefit-icon-asset img {
    width: 122px;
  }

  .benefit-list li:nth-child(3) .benefit-icon-asset img {
    width: 120px;
  }

  .benefit-list li:nth-child(4) .benefit-icon-asset img {
    width: 108px;
  }

  .explainer-shell {
    grid-template-columns: 0.75fr 1.25fr;
    gap: 52px;
  }

  .molecule-panel {
    min-height: 440px;
  }

  .process-layout {
    grid-template-columns: minmax(320px, 0.82fr) minmax(430px, 1.18fr);
    gap: 52px;
  }

  .process-product {
    height: 620px;
  }

  .dark-cta {
    grid-template-columns: 1.08fr 0.92fr;
  }

  .evidence-strip {
    grid-template-columns: repeat(3, 1fr);
  }

  .evidence-strip article {
    min-height: 210px;
    border-bottom: 0;
  }

  .evidence-strip article:nth-child(2) {
    padding-right: 34px;
    border-right: 1px solid var(--line-dark);
  }

  .science-content {
    grid-template-columns: repeat(3, 1fr);
  }

  .science-stat {
    min-height: 220px;
    padding: 32px 0 0;
    grid-column: 1 / -1;
    flex-direction: row;
    align-items: end;
    border-top: 1px solid var(--line-dark);
  }

  .science-stat p {
    display: flex;
    align-items: end;
    gap: 20px;
  }

  .science-stat small {
    max-width: 370px;
    padding-bottom: 8px;
  }

  .story-layout {
    grid-template-columns: 1fr 0.9fr;
    gap: 58px;
  }

  .guarantee-inner {
    grid-template-columns: 150px 1fr;
  }

  .guarantee-details {
    display: grid;
    padding: 22px 0 0;
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid #c4d6dc;
    border-left: 0;
    gap: 18px;
  }

  .guarantee-details p {
    border-bottom: 0;
  }
}

@media (max-width: 900px) {
  .desktop-nav,
  .header-shop {
    display: none;
  }

  .header-inner {
    grid-template-columns: 1fr auto;
  }

  .header-actions {
    grid-column: 2;
  }

  .menu-toggle {
    display: inline-block;
  }

  .menu-toggle span:not(.sr-only) {
    position: absolute;
    top: 18px;
    left: 13px;
    width: 17px;
    height: 1px;
    background: currentColor;
    transition: transform var(--transition), top var(--transition);
  }

  .menu-toggle span:last-child {
    top: 24px;
  }

  .menu-toggle[aria-expanded="true"] span:not(.sr-only) {
    top: 21px;
    transform: rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:last-child {
    transform: rotate(-45deg);
  }

  .mobile-menu {
    display: flex;
    max-height: 0;
    padding: 0 24px;
    overflow: hidden;
    flex-direction: column;
    background: var(--navy);
    opacity: 0;
    transition: max-height 300ms ease, opacity 200ms ease, padding 300ms ease;
  }

  .mobile-menu.is-open {
    max-height: calc(100vh - 84px);
    padding: 18px 24px 28px;
    overflow-y: auto;
    opacity: 1;
  }

  .mobile-menu > a:not(.button) {
    padding: 16px 2px;
    color: #dbe5ed;
    border-bottom: 1px solid var(--line-dark);
    font-size: 1.1rem;
    font-weight: 550;
  }

  .mobile-menu .button {
    margin-top: 22px;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    min-height: 780px;
    grid-template-columns: 1fr 0.8fr;
    gap: 12px;
  }

  .hero-visual {
    min-height: 690px;
  }

  .product-layout,
  .benefits-editorial,
  .story-layout {
    grid-template-columns: 1fr 1fr;
    gap: 42px;
  }

  .product-media,
  .benefit-media,
  .story-media {
    min-height: 610px;
  }

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

  .product-perks li,
  .product-perks li:first-child,
  .product-perks li:last-child {
    padding: 10px 0;
    border: 0;
  }

  .explainer-shell {
    grid-template-columns: 1fr;
  }

  .explainer-copy {
    max-width: 700px;
  }

  .molecule-panel {
    min-height: 470px;
  }

  .process-layout {
    grid-template-columns: minmax(280px, 0.78fr) minmax(0, 1.22fr);
    gap: 36px;
  }

  .process-product {
    height: 560px;
  }

  .process-steps li {
    padding-block: 26px;
  }

  .dark-cta {
    min-height: 540px;
  }

  .dark-cta-copy {
    padding: 52px;
  }

  .testimonial-shell,
  .faq-layout {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 54px;
  }

  .footer-grid {
    grid-template-columns: 1.4fr repeat(3, 0.7fr);
    gap: 34px;
  }
}

/* Mobile */
@media (max-width: 720px) {
  :root {
    --shell: calc(100% - 36px);
    --section-space: 68px;
    --radius-lg: 24px;
    --radius-md: 18px;
  }

  body.home {
    --home-announcement-height: 30px;
  }

  .home-announcement {
    gap: 6px;
    padding-inline: 10px;
    font-size: 0.64rem;
    letter-spacing: 0.025em;
    white-space: nowrap;
  }

  .home-announcement svg {
    width: 18px;
    height: 15px;
  }

  html {
    scroll-padding-top: 76px;
  }

  h2 {
    font-size: clamp(2.35rem, 11vw, 3.3rem);
  }

  .site-header.is-scrolled,
  .site-header.menu-visible {
    backdrop-filter: none;
  }

  .header-inner {
    min-height: 76px;
  }

  .brand {
    width: 94px;
  }

  .cart-button,
  .menu-toggle {
    width: 40px;
    height: 40px;
  }

  .cart-glyph {
    top: 13px;
    left: 11px;
  }

  .menu-toggle span:not(.sr-only) {
    top: 16px;
    left: 11px;
  }

  .menu-toggle span:last-child {
    top: 22px;
  }

  .menu-toggle[aria-expanded="true"] span:not(.sr-only) {
    top: 19px;
  }

  .mobile-menu.is-open {
    max-height: calc(100vh - 76px);
  }

  .hero-inner {
    min-height: 690px;
    padding-top: 76px;
    justify-content: flex-start;
  }

  .hero-copy {
    width: 100%;
    padding: 92px 0 58px;
  }

  .hero-background {
    inset: auto -52vw 0 auto;
    width: auto;
    height: 82%;
    object-fit: contain;
    object-position: right bottom;
    transform: none;
  }

  .hero::after {
    background: linear-gradient(90deg, rgba(2, 8, 15, 0.96) 0%, rgba(3, 12, 22, 0.9) 52%, rgba(4, 15, 27, 0.36) 100%);
  }

  .hero h1 {
    font-size: clamp(3.25rem, 16.5vw, 4.55rem);
    line-height: 0.94;
  }

  .hero-lede {
    max-width: 470px;
    font-size: 1rem;
  }

  .button-row .button {
    min-width: 0;
    min-height: 54px;
  }

  .hero-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 9px 14px;
  }

  .hero-details li:first-child {
    grid-column: 1 / -1;
  }

  .hero-scroll {
    display: none;
  }

  .trust-track {
    width: var(--shell);
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trust-item {
    min-height: 88px;
    padding: 14px 12px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .trust-item:first-child {
    padding-left: 12px;
  }

  .trust-item:nth-child(even) {
    border-right: 0;
  }

  .trust-item:nth-child(5) {
    grid-column: 1 / -1;
    justify-content: center;
    border-right: 0;
    border-bottom: 0;
  }

  .product-layout,
  .benefits-editorial,
  .story-layout,
  .split-heading,
  .testimonial-shell,
  .faq-layout,
  .newsletter-inner {
    grid-template-columns: 1fr;
  }

  .product-layout {
    gap: 50px;
  }

  .product-media {
    min-height: 540px;
  }

  .product-info h2 {
    font-size: clamp(2.9rem, 13vw, 4.2rem);
  }

  .product-price-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .product-perks {
    grid-template-columns: repeat(3, 1fr);
  }

  .product-perks li,
  .product-perks li:first-child,
  .product-perks li:last-child {
    align-items: flex-start;
    padding: 13px 8px;
    flex-direction: column;
    border: 0;
  }

  .product-perks li:first-child {
    padding-left: 0;
  }

  .product-perks li:last-child {
    padding-right: 0;
    border-right: 0;
  }

  .product-perk-icon {
    width: 50px;
    height: 50px;
    flex-basis: 50px;
  }

  .product-perk-icon img {
    width: 175px;
  }

  .purchase-row {
    grid-template-columns: 116px 1fr;
  }

  .split-heading {
    gap: 24px;
  }

  .split-heading > p {
    max-width: 600px;
  }

  .benefit-media,
  .story-media {
    min-height: 520px;
  }

  .benefit-list li {
    min-height: 128px;
    grid-template-columns: 62px 1fr;
  }

  .benefit-icon-asset {
    width: 52px;
    height: 52px;
  }

  .benefit-icon-asset img {
    width: 96px;
  }

  .benefit-list li:nth-child(2) .benefit-icon-asset img {
    width: 116px;
  }

  .benefit-list li:nth-child(3) .benefit-icon-asset img {
    width: 114px;
  }

  .benefit-list li:nth-child(4) .benefit-icon-asset img {
    width: 103px;
  }

  .explainer-shell {
    gap: 46px;
  }

  .molecule-comparison {
    grid-template-columns: 1fr;
  }

  .molecule-panel {
    min-height: 400px;
  }

  .comparison-plus {
    top: 50%;
    left: 50%;
  }

  .process-heading {
    margin-bottom: 34px;
  }

  .process-layout {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .process-product {
    width: min(100%, 440px);
    height: 540px;
    justify-self: center;
  }

  .process-steps li {
    padding-block: 28px;
  }

  .dark-cta {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .dark-cta-copy {
    padding: 48px 28px;
  }

  .dark-cta h2 {
    font-size: clamp(2.75rem, 12vw, 4.1rem);
  }

  .cta-media {
    min-height: 340px;
  }

  .cta-media img {
    object-position: 50% 42%;
  }

  .science-heading {
    grid-template-columns: 1fr;
  }

  .science-heading .text-link {
    margin-top: 24px;
    grid-column: 1;
    grid-row: auto;
    justify-self: start;
  }

  .science-content {
    grid-template-columns: 1fr;
  }

  .evidence-strip {
    grid-template-columns: 1fr;
  }

  .evidence-strip article,
  .evidence-strip article:first-child,
  .evidence-strip article:nth-child(2),
  .evidence-strip article:nth-child(3),
  .evidence-strip article:nth-child(4),
  .evidence-strip article:last-child {
    min-height: 0;
    padding: 30px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .evidence-strip article:last-child {
    border-bottom: 0;
  }

  .evidence-strip strong {
    font-size: clamp(2.8rem, 14vw, 4.5rem);
  }

  .science-content article,
  .science-content article:first-child {
    min-height: auto;
    padding: 28px 0 34px;
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .science-content article > span {
    margin-bottom: 34px;
  }

  .science-content h3 {
    max-width: none;
  }

  .science-stat {
    min-height: 220px;
    padding-top: 34px;
    grid-column: auto;
    flex-direction: column;
    align-items: flex-start;
  }

  .science-stat p {
    display: block;
  }

  .testimonial-shell,
  .faq-layout {
    gap: 46px;
  }

  .testimonial-heading,
  .faq-heading {
    position: static;
  }

  .testimonial-list blockquote:first-child {
    padding-top: 36px;
  }

  .testimonial-list blockquote > p {
    font-size: 1.45rem;
  }

  .testimonial-list {
    display: flex;
    width: 100%;
    padding: 0 18px 10px 0;
    overflow-x: auto;
    border-top: 0;
    scroll-padding-left: 0;
    scroll-snap-type: x mandatory;
    gap: 14px;
  }

  .testimonial-list blockquote,
  .testimonial-list blockquote:first-child {
    width: min(84vw, 410px);
    min-height: 340px;
    padding: 32px;
    flex: 0 0 min(84vw, 410px);
    background: #0b1b2b;
    border: 1px solid var(--line-dark);
    border-radius: var(--radius-md);
    scroll-snap-align: start;
  }

  .testimonial-list blockquote > p {
    font-size: 1.22rem;
    line-height: 1.45;
  }

  .story-layout {
    gap: 48px;
  }

  .story-copy {
    order: -1;
  }

  .comparison-table-wrap {
    padding: 0;
    overflow: visible;
    background: transparent;
  }

  .comparison-table {
    display: block;
    min-width: 0;
    overflow: visible;
    border-radius: 0;
  }

  .comparison-table thead {
    display: none;
  }

  .comparison-table tbody {
    display: grid;
    gap: 12px;
  }

  .comparison-table tbody tr {
    display: grid;
    overflow: hidden;
    background: var(--white);
    border: 1px solid #dce5ea;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(7, 21, 38, 0.05);
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .comparison-table tbody th,
  .comparison-table tbody td {
    position: static;
    width: auto;
    min-width: 0;
    box-shadow: none;
  }

  .comparison-table tbody th {
    padding: 14px 16px;
    grid-column: 1 / -1;
    background: #f8fafb;
    border-bottom: 1px solid #dce5ea;
    border-radius: 0;
    font-size: 0.88rem;
  }

  .comparison-table tbody td {
    display: flex;
    min-height: 76px;
    padding: 12px 10px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 7px;
    border-bottom: 0;
    font-size: 0.8rem;
  }

  .comparison-table tbody td::before {
    content: attr(data-label);
    color: #64778a;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    line-height: 1.2;
    text-transform: uppercase;
  }

  .comparison-table tbody td:nth-child(2)::before {
    color: rgba(255, 255, 255, 0.82);
  }

  .comparison-table tbody tr:last-child th,
  .comparison-table tbody tr:last-child td,
  .comparison-table tbody tr:last-child th:first-child,
  .comparison-table tbody tr:last-child td:nth-child(2),
  .comparison-table tbody tr:last-child td:last-child {
    border-radius: 0;
  }

  .comparison-mark,
  .comparison-cross {
    width: 28px;
    height: 28px;
  }

  .comparison-cell-copy {
    font-size: 0.82rem;
  }

  .table-note {
    min-width: 0;
  }

  .guarantee-inner {
    grid-template-columns: 112px 1fr;
    gap: 28px;
  }

  .guarantee-seal {
    width: 104px;
    height: 104px;
  }

  .guarantee-seal span {
    font-size: 2.5rem;
  }

  .guarantee-copy h2 {
    font-size: 2.35rem;
  }

  .guarantee-title img {
    width: 112px;
  }

  .guarantee-copy .eyebrow {
    display: none;
  }

  .guarantee-copy > p:not(.eyebrow) {
    grid-column: 1 / -1;
  }

  .guarantee-details {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .guarantee-details p {
    padding-block: 8px;
  }

  .newsletter-inner {
    min-height: 0;
    padding-block: 70px;
    gap: 32px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    align-items: flex-start;
    padding-block: 24px;
    flex-direction: column;
  }
}

@media (max-width: 460px) {
  :root {
    --shell: calc(100% - 28px);
  }

  .header-actions {
    gap: 8px;
  }

  .button-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button-row .button {
    width: 100%;
  }

  .hero-copy {
    padding-top: 58px;
  }

  .hero-inner {
    min-height: 680px;
  }

  .hero h1 {
    font-size: clamp(3.45rem, 18.5vw, 4.35rem);
  }

  .hero-details {
    grid-template-columns: 1fr;
  }

  .hero-details li:first-child {
    grid-column: auto;
  }

  .product-media {
    min-height: 480px;
  }

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

  .product-perks li,
  .product-perks li:first-child,
  .product-perks li:last-child {
    align-items: center;
    padding: 10px 0;
    flex-direction: row;
    border: 0;
  }

  .purchase-row {
    grid-template-columns: 1fr;
  }

  .quantity-control {
    width: 128px;
  }

  .benefit-media,
  .story-media {
    min-height: 440px;
  }

  .molecule-panel {
    min-height: 370px;
  }

  .process-product {
    height: 470px;
  }

  .dark-cta-copy {
    padding: 42px 22px;
  }

  .guarantee-inner {
    grid-template-columns: 1fr;
  }

  .guarantee-seal {
    width: 100px;
    height: 100px;
  }

  .newsletter-control {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .newsletter-control input {
    min-height: 52px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    column-gap: 28px;
  }

  .footer-grid nav:last-child {
    grid-column: 1 / -1;
  }

  .payment-methods img {
    width: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}