:root {
  --ink: #111111;
  --charcoal: #242423;
  --stone: #706c64;
  --warm-grey: #d8d3cb;
  --soft-beige: #eee8de;
  --porcelain: #f8f7f4;
  --white: #ffffff;
  --line: rgba(17, 17, 17, 0.13);
  --shadow: 0 24px 70px rgba(20, 20, 20, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--porcelain);
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
}

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

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 18px clamp(18px, 4vw, 58px);
  color: var(--white);
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(248, 247, 244, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: block;
  width: 108px;
  padding: 7px 10px;
  background: rgba(255, 255, 255, 0.88);
}

.brand img,
.site-footer img {
  width: 100%;
  mix-blend-mode: multiply;
}

nav {
  display: flex;
  justify-content: center;
  gap: clamp(16px, 3vw, 34px);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid currentColor;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0;
}

.hero {
  position: relative;
  min-height: 96vh;
  overflow: hidden;
  color: var(--white);
  background: var(--ink);
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.22) 46%, rgba(0, 0, 0, 0.08)),
    linear-gradient(0deg, rgba(0, 0, 0, 0.45), transparent 38%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(720px, 92vw);
  padding: 21vh clamp(20px, 6vw, 82px) 140px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: inherit;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0;
}

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

h1 {
  margin-bottom: 8px;
  font-size: clamp(68px, 12vw, 168px);
  font-weight: 500;
  line-height: 0.9;
}

h2 {
  margin-bottom: 22px;
  font-size: clamp(34px, 5.4vw, 72px);
  font-weight: 440;
  line-height: 1;
}

h3 {
  margin-bottom: 12px;
  font-size: 20px;
  font-weight: 560;
  line-height: 1.15;
}

.hero-line {
  margin-bottom: 20px;
  font-size: clamp(20px, 3vw, 34px);
}

.hero-copy {
  max-width: 570px;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(16px, 2vw, 20px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

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

.button.light {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(255, 255, 255, 0.9);
}

.hero-footer {
  position: absolute;
  right: clamp(18px, 4vw, 58px);
  bottom: 26px;
  left: clamp(18px, 4vw, 58px);
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.hero-footer span {
  padding-top: 13px;
  border-top: 1px solid rgba(255, 255, 255, 0.36);
}

section {
  padding: clamp(72px, 10vw, 132px) clamp(20px, 5vw, 72px);
}

.section-band {
  background: var(--white);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(280px, 1fr);
  gap: clamp(28px, 7vw, 90px);
  align-items: start;
}

.intro h2,
.custom h2 {
  max-width: 760px;
}

.intro p,
.custom p,
.section-heading p,
.story p {
  color: var(--stone);
  font-size: 18px;
}

.section-heading {
  width: min(850px, 100%);
  margin-bottom: 42px;
}

.section-heading.wide {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(24px, 5vw, 72px);
  align-items: end;
  width: 100%;
}

.section-heading.wide .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: -10px;
}

.science-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.science-grid article {
  min-height: 280px;
  padding: 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.36);
}

.science-grid span {
  display: block;
  margin-bottom: 70px;
  color: var(--stone);
  font-size: 12px;
}

.science-grid p,
.product-list p,
.journal-grid p {
  color: var(--stone);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(280px, 1fr);
  gap: clamp(36px, 8vw, 112px);
  align-items: center;
  background: var(--soft-beige);
}

.portrait-wrap {
  position: relative;
}

.portrait-wrap img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.image-caption {
  margin-top: 14px;
  color: var(--stone);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.story {
  max-width: 680px;
}

.credentials {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.credentials span {
  padding: 10px 12px;
  border: 1px solid rgba(17, 17, 17, 0.18);
  background: rgba(255, 255, 255, 0.32);
  color: var(--charcoal);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.product-showcase img {
  width: 100%;
  max-height: 780px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.product-list,
.journal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 1px;
  background: var(--line);
}

.product-list article,
.journal-grid article {
  min-height: 190px;
  padding: 26px;
  background: var(--white);
}

.custom {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 0.72fr) auto;
  gap: clamp(24px, 5vw, 62px);
  align-items: center;
  background: var(--charcoal);
  color: var(--white);
}

.custom p {
  color: rgba(255, 255, 255, 0.74);
}

.journal {
  background: var(--porcelain);
}

.journal-grid {
  grid-template-columns: repeat(4, 1fr);
}

.journal-grid article {
  background: transparent;
}

.journal-grid p {
  margin-bottom: 34px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 36px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--line);
  background: var(--white);
  color: var(--stone);
  font-size: 13px;
}

.site-footer img {
  width: 112px;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: auto auto;
  }

  nav {
    display: none;
  }

  .nav-cta {
    justify-self: end;
  }

  .intro-grid,
  .section-heading.wide,
  .split-section,
  .custom {
    grid-template-columns: 1fr;
  }

  .science-grid,
  .journal-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .custom .button {
    width: max-content;
  }
}

@media (max-width: 640px) {
  .site-header {
    gap: 12px;
    padding: 12px 14px;
  }

  .brand {
    width: 92px;
  }

  .nav-cta {
    min-height: 38px;
    padding: 0 12px;
    font-size: 10px;
  }

  .hero {
    min-height: 92vh;
  }

  .hero-image {
    object-position: 57% center;
  }

  .hero-content {
    padding: 17vh 18px 160px;
  }

  .hero-copy {
    max-width: 92vw;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-footer {
    grid-template-columns: 1fr;
    bottom: 16px;
    gap: 8px;
  }

  .hero-footer span {
    padding-top: 8px;
  }

  section {
    padding: 64px 18px;
  }

  h1 {
    font-size: clamp(58px, 18vw, 84px);
  }

  h2 {
    font-size: 36px;
  }

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

  .science-grid article {
    min-height: 210px;
  }

  .science-grid span {
    margin-bottom: 42px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}