:root {
  --bg: #050505;
  --panel: #101010;
  --panel-soft: #151515;
  --text: #f4f4f4;
  --muted: #a8a8a8;
  --faint: #666;
  --line: #2a2a2a;
  --accent: #ffffff;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.08), transparent 28rem),
    radial-gradient(circle at bottom right, rgba(255, 255, 255, 0.045), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--faint);
}

a:hover {
  border-bottom-color: var(--text);
}

.site-header {
  width: 100%;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 5, 5, 0.82);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.logo-mark {
  width: 22px;
  height: 22px;
  border: 1px solid var(--text);
  border-radius: 50%;
  display: inline-block;
  position: relative;
}

.logo-mark::after {
  content: "";
  position: absolute;
  inset: 6px;
  background: var(--text);
  border-radius: 50%;
}

.nav-links {
  display: flex;
  gap: 18px;
  font-size: 14px;
  color: var(--muted);
}

.nav-links a {
  color: var(--muted);
  border-bottom: none;
}

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

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 72px 24px 96px;
}

.hero {
  min-height: 68vh;
  display: grid;
  align-items: center;
  padding: 40px 0 80px;
}

.eyebrow {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  margin-bottom: 18px;
}

h1 {
  font-size: clamp(44px, 8vw, 92px);
  line-height: 0.95;
  letter-spacing: -0.075em;
  max-width: 940px;
  margin: 0;
}

.hero-subtitle {
  color: var(--muted);
  font-size: clamp(18px, 2vw, 24px);
  max-width: 760px;
  margin: 30px 0 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--text);
  border-radius: 999px;
  font-weight: 600;
  background: var(--text);
  color: var(--bg);
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  color: var(--text);
}

.button:hover {
  opacity: 0.82;
}

.section {
  padding: 56px 0;
  border-top: 1px solid var(--line);
}

.section h2 {
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.055em;
  margin: 0 0 20px;
}

.section p {
  color: var(--muted);
  max-width: 820px;
  margin: 0 0 18px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.card {
  background: linear-gradient(180deg, var(--panel-soft), var(--panel));
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 24px;
  min-height: 190px;
}

.card h3 {
  margin: 0 0 12px;
  font-size: 20px;
  letter-spacing: -0.03em;
}

.card p {
  margin: 0;
  font-size: 15px;
}

.ladder {
  display: grid;
  gap: 10px;
  margin-top: 30px;
}

.ladder-item {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 18px;
  align-items: start;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.025);
}

.ladder-number {
  color: var(--bg);
  background: var(--text);
  width: 34px;
  height: 34px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.ladder-title {
  font-weight: 700;
  margin-bottom: 3px;
}

.ladder-text {
  color: var(--muted);
  font-size: 15px;
}

.quote-panel {
  margin-top: 32px;
  padding: 28px;
  border-left: 3px solid var(--text);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.35;
  letter-spacing: -0.025em;
}

.links-list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.links-list a {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.025);
}

.links-list a:hover {
  border-color: var(--text);
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--faint);
  padding: 32px 24px;
  text-align: center;
  font-size: 14px;
}

code {
  background: rgba(255, 255, 255, 0.08);
  padding: 0.15em 0.35em;
  border-radius: 6px;
}

@media (max-width: 860px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  main {
    padding-top: 42px;
  }

  .hero {
    min-height: auto;
    padding: 28px 0 64px;
  }

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

  .ladder-item {
    grid-template-columns: 42px 1fr;
  }
}