:root {
  color-scheme: light;
  --ink: #10212b;
  --muted: #52636d;
  --water: #0b8fb3;
  --deep: #063a54;
  --foam: #f3fbfc;
  --sun: #f5c84b;
  --coral: #ef6f5e;
  --lime: #b6d957;
  --line: rgba(16, 33, 43, 0.14);
  --shadow: 0 18px 45px rgba(8, 44, 61, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--foam);
}

a {
  color: inherit;
}

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(18px, 5vw, 56px);
  color: white;
  background: linear-gradient(180deg, rgba(6, 58, 84, 0.72), rgba(6, 58, 84, 0));
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 2px solid rgba(255, 255, 255, 0.84);
  border-radius: 50%;
  font-size: 13px;
}

.top-nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
  font-weight: 700;
}

.top-nav a {
  text-decoration: none;
  padding: 8px 0;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  background: var(--deep);
}

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

.hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(6, 35, 50, 0.88) 0%, rgba(6, 35, 50, 0.68) 36%, rgba(6, 35, 50, 0.12) 76%),
    linear-gradient(0deg, rgba(6, 35, 50, 0.66) 0%, rgba(6, 35, 50, 0) 46%);
}

.hero-copy {
  position: relative;
  max-width: 720px;
  padding: 138px clamp(20px, 6vw, 78px) 84px;
  color: white;
}

.eyebrow {
  margin: 0 0 13px;
  color: var(--sun);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
  line-height: 0.98;
}

h1 {
  font-size: 72px;
  max-width: 10ch;
}

h2 {
  font-size: 42px;
}

.lede {
  max-width: 590px;
  margin: 24px 0 0;
  font-size: 22px;
  line-height: 1.4;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 850;
  text-decoration: none;
}

.button.primary {
  color: var(--ink);
  background: var(--sun);
}

.button.ghost {
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.62);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
}

.section-inner {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
}

.rule-band {
  padding: 78px 0;
  background: white;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 50px;
  align-items: start;
}

.story-copy {
  color: var(--muted);
  font-size: 20px;
  line-height: 1.55;
}

.story-copy p {
  margin: 0 0 18px;
}

.pair-lab {
  padding: 86px 0;
  background:
    radial-gradient(circle at 12% 15%, rgba(245, 200, 75, 0.28), transparent 28%),
    linear-gradient(135deg, #e9f8fb 0%, #ffffff 55%, #fff5ed 100%);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.pair-console {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  min-height: 326px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: white;
  box-shadow: var(--shadow);
}

.pair-options {
  display: grid;
  gap: 1px;
  background: var(--line);
}

.pair-option {
  border: 0;
  padding: 22px;
  color: var(--ink);
  background: white;
  font: inherit;
  font-weight: 850;
  text-align: left;
  cursor: pointer;
}

.pair-option.active {
  background: var(--deep);
  color: white;
}

.pair-output {
  display: grid;
  align-content: center;
  padding: clamp(28px, 6vw, 64px);
  background:
    linear-gradient(135deg, rgba(11, 143, 179, 0.14), rgba(239, 111, 94, 0.1)),
    white;
}

.pair-kicker {
  margin: 0 0 16px;
  color: var(--water);
  font-weight: 900;
  text-transform: uppercase;
  font-size: 13px;
}

.pair-line {
  margin: 0;
  max-width: 680px;
  font-size: 44px;
  line-height: 1.05;
  font-weight: 900;
}

.pair-proof {
  margin: 22px 0 0;
  max-width: 650px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.48;
}

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

.compare-panel {
  min-height: 360px;
  padding: clamp(34px, 6vw, 76px);
  display: grid;
  align-content: end;
}

.compare-panel.solo {
  color: white;
  background: linear-gradient(140deg, #25333b, #6b747a);
}

.compare-panel.duo {
  color: var(--ink);
  background: linear-gradient(140deg, var(--sun), var(--lime));
}

.compare-count {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 950;
  text-transform: uppercase;
}

.compare-panel p:last-child {
  max-width: 500px;
  margin: 18px 0 0;
  font-size: 20px;
  line-height: 1.45;
}

.merch-band {
  padding: 88px 0;
  background: white;
}

.merch-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 52px;
  align-items: center;
}

.merch-layout p:not(.eyebrow) {
  max-width: 620px;
  color: var(--muted);
  font-size: 21px;
  line-height: 1.5;
}

.shirt-mock {
  position: relative;
  min-height: 360px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background:
    linear-gradient(115deg, transparent 0 18%, rgba(255, 255, 255, 0.34) 18% 22%, transparent 22%),
    var(--deep);
  color: white;
  box-shadow: var(--shadow);
  clip-path: polygon(19% 0, 36% 0, 42% 10%, 58% 10%, 64% 0, 81% 0, 100% 20%, 88% 39%, 88% 100%, 12% 100%, 12% 39%, 0 20%);
}

.shirt-neck {
  position: absolute;
  top: 0;
  width: 104px;
  height: 58px;
  border-radius: 0 0 60px 60px;
  background: var(--foam);
}

.shirt-mock p {
  margin: 42px 0 0;
  text-align: center;
  font-size: 54px;
  line-height: 0.92;
  font-weight: 950;
}

.shirt-mock span {
  color: var(--sun);
  font-size: 0.72em;
}

.manifesto {
  padding: 70px 0;
  color: white;
  background: var(--coral);
}

.manifesto p {
  max-width: 960px;
  margin: 0;
  font-size: 36px;
  line-height: 1.16;
  font-weight: 900;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  padding: 28px clamp(18px, 5vw, 56px);
  color: white;
  background: var(--ink);
  font-size: 14px;
}

@media (max-width: 820px) {
  .site-header {
    align-items: flex-start;
  }

  .top-nav {
    gap: 10px;
    font-size: 13px;
  }

  h1 {
    font-size: 54px;
  }

  h2,
  .pair-line {
    font-size: 34px;
  }

  .lede,
  .story-copy,
  .pair-proof,
  .compare-panel p:last-child,
  .merch-layout p:not(.eyebrow) {
    font-size: 18px;
  }

  .two-column,
  .pair-console,
  .comparison,
  .merch-layout {
    grid-template-columns: 1fr;
  }

  .pair-options {
    grid-template-columns: 1fr 1fr;
  }

  .pair-option {
    min-height: 72px;
    padding: 16px;
  }

  .shirt-mock {
    width: min(360px, 100%);
    margin: 0 auto;
  }

  .manifesto p {
    font-size: 28px;
  }
}

@media (max-width: 560px) {
  .site-header {
    position: absolute;
    flex-direction: column;
    gap: 12px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .hero {
    min-height: 88vh;
  }

  .hero-image {
    object-position: 58% center;
  }

  .hero-copy {
    padding-top: 142px;
  }

  h1 {
    font-size: 46px;
  }

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

  .pair-options {
    grid-template-columns: 1fr;
  }

  .shirt-mock p {
    font-size: 46px;
  }
}