* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 85% 7%, rgba(37, 99, 235, .14), transparent 24%),
    radial-gradient(circle at 8% 28%, rgba(26, 143, 212, .16), transparent 28%),
    linear-gradient(180deg, #d9ecfa 0%, #e6f1fa 42%, #dceaf7 100%);
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

button,
input,
textarea {
  font: inherit;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 10px 14px;
  background: #fff;
  border-radius: 8px;
  color: #38566d;
}

.skip-link:focus {
  top: 16px;
}

.section-shell {
  width: min(calc(100% - 48px), var(--max));
  margin-inline: auto;
}

.content-section {
  padding: 86px 0;
  border-top: 1px solid var(--line);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h2 {
  margin-bottom: 28px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.2;
}

.section-kicker {
  margin-bottom: 8px;
  color: var(--violet);
  font: 800 12px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .12em;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: 11px;
  text-decoration: none;
  font-weight: 800;
  cursor: pointer;
}

.button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
button:focus-visible {
  outline: 3px solid #3a4fa8;
  outline-offset: 3px;
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, #1a8fd4, #2563eb);
  box-shadow: 0 10px 24px rgba(37, 99, 235, .22);
}

.button-secondary {
  border-color: rgba(50, 110, 180, .28);
  background: rgba(248, 252, 255, .55);
}