:root {
  color-scheme: light;
  --paper: #fdfbf7;
  --sidebar: #f4f0ea;
  --ink: #111111;
  --muted: #5d554d;
  --yellow: #ffd83d;
  --pink: #ff4911;
  --cyan: #2979ff;
  --lavender: #c4a1ff;
  --lime: #00e676;
  --terminal: #050505;
  --shadow: 5px 5px 0 var(--ink);
  --shadow-small: 3px 3px 0 var(--ink);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(rgba(17, 17, 17, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 17, 17, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 34px 34px;
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
  letter-spacing: 0;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 2px solid var(--ink);
  background: rgba(253, 251, 247, 0.94);
  padding: 14px clamp(18px, 4vw, 48px);
  backdrop-filter: blur(12px);
}

.brand,
.nav-links,
.hero-actions,
.window-bar,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 900;
  letter-spacing: 0;
}

.brand img {
  width: 38px;
  height: 38px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  box-shadow: 3px 3px 0 var(--ink);
}

.nav-links {
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  border: 2px solid transparent;
  border-radius: 6px;
  padding: 8px 11px;
  font-size: 14px;
  font-weight: 800;
}

.nav-links a:hover {
  border-color: var(--ink);
  background: white;
  box-shadow: var(--shadow-small);
}

main {
  overflow: hidden;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  min-height: calc(100svh - 160px);
  padding: clamp(34px, 6vw, 70px) clamp(18px, 4vw, 56px) 38px;
}

.hero-copy {
  max-width: 650px;
}

.stamp,
.eyebrow {
  display: inline-flex;
  width: fit-content;
  border: 2px solid var(--ink);
  border-radius: 4px;
  background: var(--yellow);
  box-shadow: var(--shadow-small);
  padding: 7px 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  font-weight: 900;
  line-height: 1;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(64px, 11vw, 148px);
  font-weight: 950;
  line-height: 0.9;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(34px, 5vw, 72px);
  font-weight: 950;
  line-height: 0.95;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.05;
}

.hero-lede {
  max-width: 620px;
  margin-bottom: 18px;
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 900;
  line-height: 1.12;
}

.hero-note,
.quickstart-copy p,
.feature-card p,
.flow-item p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.hero-actions {
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 2px solid var(--ink);
  border-radius: 7px;
  padding: 12px 18px;
  font-weight: 900;
  box-shadow: var(--shadow);
  transition:
    transform 120ms ease,
    box-shadow 120ms ease,
    background-color 120ms ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 7px 7px 0 var(--ink);
}

.button:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ink);
}

.button-primary {
  background: var(--pink);
}

.button-ghost {
  background: white;
}

.hero-visual {
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background: var(--terminal);
  box-shadow: 8px 8px 0 var(--ink);
  transform: rotate(-0.2deg);
}

.window-bar {
  gap: 8px;
  border-bottom: 2px solid var(--ink);
  background: var(--yellow);
  padding: 10px 12px;
}

.window-bar span {
  width: 12px;
  height: 12px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: white;
}

.window-bar span:nth-child(1) {
  background: var(--pink);
}

.window-bar span:nth-child(2) {
  background: var(--lavender);
}

.window-bar span:nth-child(3) {
  background: var(--lime);
}

.window-bar strong {
  margin-left: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 12px;
}

.interface-frame {
  padding: 14px;
}

.interface-frame img {
  width: 100%;
  border: 2px solid var(--ink);
  border-radius: 6px;
  background: white;
}

.section-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-block: 2px solid var(--ink);
  background: var(--sidebar);
}

.section-strip div {
  min-height: 116px;
  border-right: 2px solid var(--ink);
  padding: 26px clamp(18px, 4vw, 44px);
}

.section-strip div:last-child {
  border-right: 0;
}

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

.section-strip strong {
  margin-bottom: 8px;
  font-size: 25px;
  font-weight: 950;
}

.section-strip span {
  color: var(--muted);
  font-weight: 750;
}

.content-section,
.flow-section,
.quickstart-section {
  padding: clamp(58px, 9vw, 112px) clamp(18px, 4vw, 56px);
}

.section-heading {
  max-width: 900px;
  margin-bottom: clamp(30px, 5vw, 56px);
}

.section-heading .eyebrow,
.quickstart-copy .eyebrow {
  margin-bottom: 18px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feature-card,
.flow-item {
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background: white;
  box-shadow: var(--shadow);
}

.feature-card {
  min-height: 265px;
  padding: 22px;
}

.feature-index {
  display: inline-flex;
  margin-bottom: 50px;
  border: 2px solid var(--ink);
  border-radius: 4px;
  background: var(--paper);
  padding: 5px 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  font-weight: 900;
}

.accent-pink {
  background: #ffe5dd;
}

.accent-yellow {
  background: #fff2a7;
}

.accent-cyan {
  background: #dce9ff;
}

.accent-lime {
  background: #dafbe9;
}

.flow-section {
  border-block: 2px solid var(--ink);
  background: var(--sidebar);
}

.flow-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.flow-item {
  position: relative;
  padding: 24px;
}

.flow-item span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 46px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: var(--pink);
  font-weight: 950;
  box-shadow: var(--shadow-small);
}

.architecture-section {
  background: var(--paper);
}

.architecture-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.architecture-grid div {
  border: 2px solid var(--ink);
  border-radius: 7px;
  background: white;
  box-shadow: var(--shadow-small);
  padding: 18px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 14px;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.architecture-grid div:nth-child(2n) {
  background: var(--yellow);
}

.architecture-grid div:nth-child(3n) {
  background: var(--lavender);
}

.quickstart-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(360px, 1fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
  border-top: 2px solid var(--ink);
  background: var(--sidebar);
}

.terminal {
  margin: 0;
  overflow-x: auto;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background: var(--terminal);
  box-shadow: 6px 6px 0 var(--yellow);
  color: #eeeeee;
  padding: 24px;
}

.terminal code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: clamp(14px, 1.8vw, 19px);
  line-height: 1.75;
}

.site-footer {
  justify-content: space-between;
  gap: 20px;
  border-top: 2px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  padding: 24px clamp(18px, 4vw, 56px);
  font-weight: 800;
}

.site-footer a {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

@media (max-width: 1040px) {
  .hero,
  .quickstart-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    transform: none;
  }

  .feature-grid,
  .flow-list,
  .architecture-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .nav-links a {
    padding-inline: 8px;
  }

  .hero {
    padding-top: 26px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .section-strip,
  .feature-grid,
  .flow-list,
  .architecture-grid {
    grid-template-columns: 1fr;
  }

  .section-strip div {
    border-right: 0;
    border-bottom: 2px solid var(--ink);
  }

  .section-strip div:last-child {
    border-bottom: 0;
  }

  h1 {
    font-size: clamp(50px, 17vw, 76px);
  }

  h2 {
    font-size: clamp(32px, 11vw, 48px);
  }

  .hero-lede {
    font-size: 24px;
  }

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