:root {
  --paper: #f3f0e8;
  --ink: #131a2a;
  --blue: #1d36c7;
  --orange: #ff5d2a;
  --acid: #d9ff5d;
  --line: rgba(19, 26, 42, 0.22);
  --max: 1440px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent calc(100% - 1px), rgba(19, 26, 42, 0.045) 1px) 0 0 / 6.25% 100%,
    var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

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

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  color: white;
  background: var(--ink);
  transform: translateY(-180%);
}

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

.site-header,
.catalog,
.hero,
.manifesto,
.feature-grid,
.install,
.details,
footer {
  width: min(100%, var(--max));
  margin-inline: auto;
}

.site-header {
  min-height: 104px;
  padding: 24px clamp(20px, 4vw, 64px);
  border-bottom: 1px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.24em;
  font-size: clamp(1.1rem, 2.2vw, 1.55rem);
  font-weight: 850;
  letter-spacing: -0.065em;
  line-height: 1;
  text-decoration: none;
}

.wordmark-mark {
  padding: 0.22em 0.3em 0.18em;
  color: var(--paper);
  background: var(--blue);
  letter-spacing: -0.045em;
}

.edition {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.69rem;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.edition span {
  color: var(--orange);
  font-size: 0.8rem;
}

.hero {
  min-height: 720px;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  border-bottom: 1px solid var(--ink);
}

.hero-copy {
  padding: clamp(64px, 8vw, 118px) clamp(28px, 6vw, 88px) clamp(54px, 8vw, 100px) clamp(20px, 4vw, 64px);
  border-right: 1px solid var(--ink);
  align-self: stretch;
}

.kicker,
.section-label,
.feature-number {
  margin: 0;
  font-size: 0.69rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.kicker { color: var(--blue); }

h1,
h2,
h3,
p { text-wrap: pretty; }

h1 {
  margin: 24px 0 28px;
  max-width: 13ch;
  font-size: clamp(3.15rem, 5.4vw, 5.5rem);
  font-weight: 760;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.lede {
  max-width: 630px;
  margin: 0;
  font-size: clamp(1.07rem, 1.7vw, 1.38rem);
  line-height: 1.45;
}

.hero-actions {
  margin-top: 44px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.button {
  min-height: 58px;
  padding: 0 18px 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  border: 1px solid var(--ink);
  font-size: 0.83rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 160ms ease, background 160ms ease, transform 160ms ease;
}

.button-primary { color: white; background: var(--blue); border-color: var(--blue); }
.button-primary:hover, .button-primary:focus-visible { color: var(--ink); background: var(--acid); transform: translateY(-2px); }
.button-arrow { font-size: 1.3em; line-height: 1; }

.text-link {
  padding-block: 8px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-underline-offset: 5px;
  text-transform: uppercase;
}

.text-link:hover, .text-link:focus-visible { color: var(--blue); }

.requirements {
  margin: 18px 0 0;
  font-size: 0.73rem;
  font-weight: 650;
}

.hero-art {
  position: relative;
  min-height: 600px;
  overflow: hidden;
  display: grid;
  place-items: center;
  padding: clamp(40px, 6vw, 88px);
  background: #fff;
}

.hero-cats {
  width: min(100%, 592px);
  height: auto;
}

.catalog-intro {
  min-height: 470px;
  padding: clamp(72px, 10vw, 132px) clamp(20px, 4vw, 64px) clamp(64px, 8vw, 104px);
  border-bottom: 1px solid var(--ink);
}

.catalog-intro h1 {
  max-width: none;
  margin: 24px 0 28px;
  font-size: clamp(3.2rem, 6.5vw, 6.4rem);
  font-weight: 720;
  line-height: 0.96;
}

.catalog-intro > p:last-child {
  max-width: 700px;
  margin: 0;
  font-size: clamp(1.08rem, 1.8vw, 1.35rem);
}

.catalog-list { border-bottom: 1px solid var(--ink); }

.catalog-card {
  min-height: 260px;
  padding: clamp(28px, 4vw, 54px) clamp(20px, 4vw, 64px);
  display: grid;
  grid-template-columns: 72px minmax(180px, 230px) minmax(260px, 1fr) minmax(160px, auto) 34px;
  align-items: center;
  gap: clamp(20px, 3vw, 44px);
  text-decoration: none;
  transition: background 160ms ease, color 160ms ease;
}

.catalog-card:hover,
.catalog-card:focus-visible { color: var(--paper); background: var(--blue); }

.catalog-number,
.catalog-meta {
  font-size: 0.7rem;
  font-weight: 780;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.catalog-art {
  width: 100%;
  aspect-ratio: 592 / 516;
  overflow: hidden;
  display: grid;
  place-items: center;
  background: #fff;
}

.catalog-art img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.catalog-card-copy { display: grid; gap: 12px; }
.catalog-card-copy strong { font-size: clamp(2rem, 4vw, 3.8rem); letter-spacing: -0.055em; line-height: 1; }
.catalog-card-copy > span { max-width: 610px; font-size: 1rem; }
.catalog-arrow { font-size: 1.7rem; }

.manifesto,
.details {
  padding: clamp(72px, 10vw, 150px) clamp(20px, 4vw, 64px);
  display: grid;
  grid-template-columns: minmax(150px, 0.32fr) 1fr;
  gap: 48px;
  border-bottom: 1px solid var(--ink);
}

.section-label {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.section-label span:first-child { color: var(--blue); }

.manifesto-copy h2,
.install h2,
.details h2 {
  margin: 0;
  font-size: clamp(2.7rem, 6vw, 6rem);
  font-weight: 880;
  letter-spacing: -0.07em;
  line-height: 0.91;
}

.manifesto-copy p {
  max-width: 720px;
  margin: 40px 0 0;
  font-size: clamp(1.18rem, 2.2vw, 1.75rem);
  line-height: 1.42;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--ink);
}

.feature-grid article {
  min-height: 330px;
  padding: clamp(32px, 4vw, 56px);
  display: flex;
  flex-direction: column;
}

.feature-grid article + article { border-left: 1px solid var(--ink); }
.feature-number { color: var(--blue); }

.feature-grid h3 {
  margin: auto 0 16px;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  letter-spacing: -0.055em;
}

.feature-grid article > p:last-child { max-width: 320px; margin: 0; font-size: 0.96rem; }

.install {
  padding: clamp(72px, 10vw, 140px) clamp(20px, 4vw, 64px);
  color: var(--paper);
  background: var(--blue);
  display: grid;
  grid-template-columns: minmax(150px, 0.32fr) 1fr;
  gap: 48px;
}

.section-label-light span:first-child { color: var(--acid); }
.install-content { max-width: 920px; }

.steps {
  margin: 60px 0 44px;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(243, 240, 232, 0.5);
}

.steps li {
  padding: 24px 0;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  border-bottom: 1px solid rgba(243, 240, 232, 0.5);
}

.step-number { color: var(--acid); font-weight: 900; }
.steps strong { font-size: 1.03rem; }
.steps p { margin: 6px 0 0; color: rgba(243, 240, 232, 0.78); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }

.button-light { color: var(--ink); background: var(--acid); border-color: var(--acid); }
.button-light:hover, .button-light:focus-visible { background: var(--orange); transform: translateY(-2px); }

.details { border-top: 1px solid var(--ink); }
.details-content h2 { margin-bottom: 58px; }
.details-content table { width: 100%; border-collapse: collapse; }
.details-content tr {
  padding: 17px 0;
  border-top: 1px solid var(--line);
}

.details-content tr:last-child { border-bottom: 1px solid var(--line); }
.details-content th,
.details-content td { padding: 17px 0; vertical-align: top; text-align: left; }
.details-content th { width: 30%; padding-right: 24px; font-size: 0.7rem; font-weight: 800; letter-spacing: 0.13em; text-transform: uppercase; }
.details-content td { overflow-wrap: anywhere; }
.details-content td code { font-size: clamp(0.68rem, 1.4vw, 0.86rem); }
.privacy-note { margin: 24px 0 0; font-size: 0.78rem; }

footer {
  min-height: 170px;
  padding: 42px clamp(20px, 4vw, 64px);
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: end;
  gap: 48px;
  color: var(--paper);
  background: var(--ink);
}

footer p { margin: 0; font-size: 0.72rem; }
.footer-wordmark { font-size: 1.2rem; }

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

@media (max-width: 900px) {
  body { background-size: 12.5% 100%; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { border-right: 0; border-bottom: 1px solid var(--ink); }
  .hero-art { min-height: 520px; }
  .catalog-card {
    grid-template-columns: 52px minmax(150px, 190px) 1fr 30px;
  }
  .catalog-meta { grid-column: 3; }
  .catalog-arrow { grid-column: 4; grid-row: 1 / span 2; }
  .manifesto, .install, .details { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-grid article { min-height: 240px; }
  .feature-grid article + article { border-left: 0; border-top: 1px solid var(--ink); }
}

@media (max-width: 600px) {
  .site-header { min-height: 84px; }
  .edition { max-width: 130px; line-height: 1.4; }
  h1 { font-size: clamp(2.9rem, 13vw, 4.25rem); }
  .hero-copy { padding-top: 58px; }
  .hero-art { min-height: 360px; padding: 28px 20px; }
  .catalog-intro { min-height: 410px; }
  .catalog-intro h1 { font-size: clamp(3rem, 15vw, 4.8rem); }
  .catalog-card {
    min-height: 0;
    grid-template-columns: 44px minmax(0, 112px) 1fr;
    gap: 18px;
  }
  .catalog-card-copy { grid-column: 1 / -1; }
  .catalog-meta { grid-column: 1 / -1; }
  .catalog-arrow { grid-column: 3; grid-row: 1; justify-self: end; }
  .manifesto, .install, .details { gap: 42px; }
  .details-content th { width: 28%; }
  footer { grid-template-columns: 1fr 1fr; align-items: start; }
  .footer-wordmark { grid-column: 1 / -1; }
  footer p:last-child { text-align: right; }
}

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