:root {
  color-scheme: light;
  --text: #16181d;
  --muted: #677082;
  --line: rgba(22, 24, 29, 0.12);
  --panel: rgba(255, 255, 255, 0.82);
  --accent: #0a84ff;
  --accent-dark: #0067d8;
  --bg-a: #f7f8fb;
  --bg-b: #eef4ff;
  --bg-c: #f1fff8;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 12%, var(--bg-c), transparent 28rem),
    radial-gradient(circle at 88% 18%, var(--bg-b), transparent 30rem),
    linear-gradient(180deg, var(--bg-a), #ffffff 70%);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
}

a {
  color: var(--accent-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.page,
.document {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  min-height: 68vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 64px 0 40px;
}

.mark {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  margin-bottom: 26px;
  border: 1px solid var(--line);
  border-radius: 18px;
  color: #ffffff;
  background: linear-gradient(145deg, #111827, #276ef1 58%, #11a36a);
  box-shadow: 0 20px 48px rgba(20, 50, 110, 0.18);
  font-size: 28px;
  font-weight: 800;
}

.eyebrow,
.updated {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 15px;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.04;
  letter-spacing: 0;
}

.document h1 {
  padding-top: 34px;
  font-size: clamp(32px, 5vw, 52px);
}

h2 {
  margin: 34px 0 8px;
  font-size: 22px;
  line-height: 1.3;
}

p {
  margin: 0 0 14px;
}

.lead {
  max-width: 700px;
  color: var(--muted);
  font-size: 21px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(18px);
  font-weight: 650;
}

.button.primary {
  border-color: transparent;
  color: #ffffff;
  background: var(--accent);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding: 18px 0 58px;
}

article {
  min-height: 168px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  backdrop-filter: blur(18px);
}

article h2 {
  margin-top: 0;
}

article p {
  color: var(--muted);
}

.document {
  max-width: 780px;
  padding: 24px 0 48px;
}

.back {
  display: inline-flex;
  margin-top: 18px;
  color: var(--muted);
}

ul {
  margin: 8px 0 18px;
  padding-left: 22px;
}

li {
  margin: 6px 0;
}

footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

footer p {
  margin: 0;
}

footer nav {
  display: flex;
  gap: 18px;
}

@media (max-width: 720px) {
  .page,
  .document {
    width: min(100% - 24px, 960px);
  }

  .hero {
    min-height: auto;
    padding-top: 46px;
  }

  .lead {
    font-size: 18px;
  }

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

  article {
    min-height: 0;
  }
}