@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;700&display=swap');

:root {
  --color-bg: #000000;
  --color-fg: #FFFFFF;
  --color-line: rgba(255, 255, 255, 0.18);
  --color-muted: rgba(255, 255, 255, 0.55);
  --container-width: 1440px;
  --transition: 220ms ease;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

body {
  margin: 0;
  font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-fg);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 50px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 50px;
}

.logo {
  display: block;
  color: var(--color-fg);
}

.logo svg {
  display: block;
  height: 16px;
  width: auto;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  font-size: 14px;
  color: var(--color-muted);
  transition: color var(--transition);
}

.nav a:hover {
  color: var(--color-fg);
}

/* Hero */

.hero {
  padding: 160px 0 140px;
  border-bottom: 1px solid var(--color-line);
}

.hero h1 {
  font-size: clamp(38px, 6vw, 84px);
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 44px;
  max-width: 18ch;
}

.hero .lead {
  font-size: 19px;
  line-height: 1.65;
  color: var(--color-muted);
  max-width: 680px;
  margin: 0;
}

/* Sections */

.section {
  padding: 120px 0;
  border-bottom: 1px solid var(--color-line);
}

.label {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-muted);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin: 0 0 56px;
}

/* Domains list */

.list {
  border-top: 1px solid var(--color-line);
}

.list-row {
  display: flex;
  align-items: center;
  gap: 40px;
  padding: 34px 0;
  border-bottom: 1px solid var(--color-line);
  transition: gap var(--transition);
}

.list-row:hover {
  gap: 52px;
}

.list-row .num {
  flex: none;
  width: 3ch;
  font-size: 14px;
  color: var(--color-muted);
}

.list-row h3 {
  flex: 1;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0;
}

.list-row .arrow {
  flex: none;
  font-size: 22px;
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--transition), transform var(--transition);
}

.list-row:hover .arrow {
  opacity: 1;
  transform: translateX(0);
}

/* Ecosystem */

.ecosystem-row {
  display: flex;
  align-items: baseline;
  gap: 40px;
  padding: 32px 0;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  cursor: pointer;
  transition: gap var(--transition);
}

.ecosystem-row:hover {
  gap: 52px;
}

.ecosystem-row h3 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
  flex: none;
}

.ecosystem-row p {
  margin: 0;
  flex: 1;
  min-width: 240px;
  color: var(--color-muted);
}

.ecosystem-row .arrow {
  font-size: 20px;
  flex: none;
  margin-left: auto;
}

/* Footer */

.site-footer {
  padding: 40px 0;
}

.back-to-top {
  display: inline-block;
  font-size: 14px;
  color: var(--color-muted);
  transition: color var(--transition);
}

.back-to-top:hover {
  color: var(--color-fg);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-footer p {
  margin: 0;
  font-size: 14px;
  color: var(--color-muted);
}

/* Responsive */

@media (max-width: 640px) {
  .container { padding: 0 24px; }
  .header-inner { padding: 24px; }
  .hero { padding: 120px 0 88px; }
  .section { padding: 80px 0; }
  .label { margin-bottom: 40px; }

  .nav { gap: 20px; }

  .list-row { gap: 20px; padding: 26px 0; }
  .list-row:hover { gap: 20px; }
  .list-row .arrow { display: none; }

  .ecosystem-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .ecosystem-row .arrow { display: none; }

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