:root {
  color-scheme: dark;
  --bg: #0b0d10;
  --panel: #11151a;
  --text: #edf1f5;
  --muted: #9ba6b2;
  --line: #242b33;
  --accent: #d9e2ec;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 50% -10%, rgba(255,255,255,.07), transparent 34rem),
    var(--bg);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
  padding: 56px 0 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo {
  width: 52px;
  height: 52px;
  color: var(--accent);
}

.name {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: .02em;
}

.tagline {
  margin-top: 4px;
  color: var(--muted);
  font-size: .92rem;
}

.hero {
  padding: 118px 0 88px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: .8rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.7rem, 7vw, 5.6rem);
  line-height: .98;
  letter-spacing: -.055em;
}

.intro {
  max-width: 700px;
  margin: 34px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.75;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 1px;
  background: var(--line);
}

.principles article {
  min-height: 190px;
  padding: 28px;
  background: var(--panel);
}

h2 {
  margin: 0 0 14px;
  font-size: 1rem;
  letter-spacing: .01em;
}

.principles p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

footer {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
  padding: 42px 0 0;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: .78rem;
}

.dot {
  color: #59636e;
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 28px, 920px);
    padding-top: 30px;
  }

  .hero {
    padding: 84px 0 64px;
  }

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

  .principles article {
    min-height: 0;
  }

  footer {
    flex-wrap: wrap;
  }
}