:root {
  color-scheme: dark;
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;

  --bg: #0c0f11;
  --panel: #171b1e;
  --panel-soft: #1d2226;
  --text: #f4f5f6;
  --muted: #a8adb2;
  --line: #30363b;
  --accent: #c66a2b;
  --accent-light: #e58a48;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(
      circle at top,
      #20252a 0%,
      #111417 38%,
      var(--bg) 75%
    );
  color: var(--text);
  min-height: 100vh;
}

a {
  color: var(--accent-light);
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(12, 15, 17, 0.92);
  backdrop-filter: blur(10px);
}

.header-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  font-size: 23px;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--text);
}

.brand span {
  color: var(--accent-light);
}

nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
}

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

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 72px 22px;
}

.hero {
  max-width: 760px;
  padding: 50px 0 68px;
}

.eyebrow {
  display: inline-block;
  color: var(--accent-light);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

h1 {
  margin: 0 0 20px;
  font-size: clamp(42px, 8vw, 76px);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

h2 {
  margin-top: 0;
  font-size: 28px;
}

h3 {
  margin-top: 32px;
}

.hero p {
  color: var(--muted);
  font-size: 20px;
  line-height: 1.65;
  max-width: 720px;
}

.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.button {
  display: inline-block;
  padding: 13px 20px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 800;
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--panel);
}

.button.primary {
  background:
    linear-gradient(
      180deg,
      var(--accent-light),
      var(--accent)
    );
  border-color: #e0894b;
}

.grid {
  display: grid;
  grid-template-columns:
    repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  background:
    linear-gradient(
      180deg,
      var(--panel-soft),
      var(--panel)
    );
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px;
}

.card h3 {
  margin: 0 0 10px;
}

.card p,
.content p,
.content li {
  color: var(--muted);
  line-height: 1.7;
}

.content {
  max-width: 780px;
}

.content h1 {
  font-size: 44px;
  margin-bottom: 10px;
}

.updated {
  color: var(--muted);
  margin-bottom: 40px;
}

footer {
  max-width: 1000px;
  margin: 0 auto;
  padding: 30px 22px 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 10px;
}

@media (max-width: 720px) {
  main {
    padding-top: 45px;
  }

  .header-inner {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .hero {
    padding-top: 20px;
  }
}