* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --ink: #191919;
  --paper: #f2f3f4;
  --white: #ffffff;
  --line: #c9cdd1;
  --muted: #62676c;
  --signal: #ff5a3c;
  --signal-dark: #dc3d25;
  --max: 1240px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.shell {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 12px 16px;
  background: var(--white);
  color: var(--ink);
  font-weight: 700;
  transform: translateY(-160%);
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--signal);
  border-bottom: 1px solid var(--ink);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-mark {
  min-width: 118px;
  height: 42px;
  padding: 0 15px;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--white);
  font: 800 14px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: -0.055em;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links a {
  text-decoration: none;
  font-size: 14px;
  font-weight: 650;
  text-transform: lowercase;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 5px;
}

.hero {
  min-height: min(760px, calc(100vh - 76px));
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  align-items: end;
  gap: 70px;
  padding-top: 96px;
  padding-bottom: 70px;
}

h1 {
  max-width: 870px;
  margin: 0;
  font-size: clamp(58px, 8.2vw, 124px);
  line-height: 0.89;
  letter-spacing: -0.075em;
  text-transform: lowercase;
}

h1 span {
  color: var(--signal-dark);
}

.hero-side {
  padding-bottom: 7px;
}

.hero-side p {
  max-width: 400px;
  margin: 0 0 30px;
  color: #34373a;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.38;
  letter-spacing: -0.025em;
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 750;
  letter-spacing: 0.045em;
  text-decoration: none;
  text-transform: uppercase;
}

.arrow-link::after {
  content: "↘";
  font-size: 21px;
  transition: transform 180ms ease;
}

.arrow-link:hover::after {
  transform: translate(3px, 3px);
}

.section {
  padding: 104px 0;
  border-top: 1px solid var(--ink);
}

.section-head {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 44px;
  margin-bottom: 54px;
}

.section-label {
  margin: 4px 0 0;
  font: 700 12px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-title {
  max-width: 880px;
  margin: 0;
  font-size: clamp(37px, 5vw, 72px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.product-grid {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 18px;
}

.product {
  min-height: 430px;
  display: flex;
  flex-direction: column;
  padding: 34px;
  background: var(--white);
  border: 1px solid var(--ink);
  border-left: 9px solid var(--signal);
}

.product-name {
  margin: 0;
  font-size: clamp(30px, 4vw, 50px);
  letter-spacing: -0.055em;
}

.product-copy {
  max-width: 650px;
  margin: auto 0 34px;
  font-size: clamp(21px, 2.4vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.product-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font: 750 13px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.035em;
  text-decoration: none;
  text-transform: uppercase;
}

.product-link span {
  font-size: 22px;
  transition: transform 180ms ease;
}

.product-link:hover span {
  transform: translate(3px, -3px);
}

.about-grid {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) minmax(230px, 0.45fr);
  gap: 44px;
  align-items: start;
}

.about-copy {
  max-width: 760px;
  margin: 0;
  font-size: clamp(30px, 4vw, 56px);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.facts {
  margin: 7px 0 0;
  padding: 0;
  border-top: 1px solid var(--ink);
}

.facts div {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.facts dt {
  color: var(--muted);
}

.facts dd {
  margin: 0;
  font-weight: 700;
  text-align: right;
}

.contact {
  background: var(--signal);
}

.contact-inner {
  min-height: 440px;
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 44px;
  align-content: center;
  padding-top: 86px;
  padding-bottom: 86px;
}

.contact h2 {
  max-width: 900px;
  margin: 0 0 34px;
  font-size: clamp(52px, 8vw, 112px);
  line-height: 0.9;
  letter-spacing: -0.07em;
  text-transform: lowercase;
}

.mail {
  display: inline-block;
  padding-bottom: 5px;
  border-bottom: 2px solid var(--ink);
  font-size: clamp(20px, 2.5vw, 34px);
  font-weight: 700;
  letter-spacing: -0.03em;
  text-decoration: none;
}

footer {
  background: var(--ink);
  color: var(--white);
}

.footer-inner {
  min-height: 124px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  color: #bfc3c7;
  font-size: 12px;
}

.footer-inner strong {
  color: var(--white);
  font-weight: 650;
}

@media (max-width: 850px) {
  .shell {
    width: min(100% - 30px, var(--max));
  }

  .nav {
    min-height: 68px;
  }

  .nav-links {
    gap: 15px;
  }

  .nav-links a:nth-child(2) {
    display: none;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 48px;
    padding: 74px 0 52px;
  }

  h1 {
    font-size: clamp(56px, 16vw, 90px);
  }

  .hero-side {
    max-width: 540px;
  }

  .section {
    padding: 72px 0;
  }

  .section-head,
  .contact-inner {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .section-head {
    margin-bottom: 34px;
  }

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

  .product {
    min-height: 360px;
    padding: 25px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .facts {
    max-width: 500px;
  }
}

@media (max-width: 520px) {
  .brand-mark {
    min-width: 108px;
    height: 38px;
    padding: 0 13px;
    font-size: 12px;
  }

  .nav-links a:first-child {
    display: none;
  }

  .product-copy {
    font-size: 23px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}