:root {
  color-scheme: light;
  --bg: #f7f8fa;
  --surface: #ffffff;
  --ink: #17202a;
  --muted: #5f6b7a;
  --line: #d9dee7;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --warn: #9a3412;
  --shadow: 0 14px 36px rgba(23, 32, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
  text-decoration: none;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(247, 248, 250, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.brand,
.nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: 8px;
  background: var(--ink);
  color: white;
}

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

.nav-action {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
}

main {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
  min-height: 560px;
  padding: 72px 0 56px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(44px, 8vw, 88px);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 10px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  letter-spacing: 0;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: 20px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 700;
}

.button.primary {
  background: var(--accent);
  color: white;
}

.button.secondary {
  border: 1px solid var(--line);
  background: var(--surface);
}

.endpoint-panel,
.card,
.notice,
pre,
.support {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.endpoint-panel {
  display: grid;
  gap: 12px;
  padding: 24px;
}

.panel-label,
.panel-note {
  color: var(--muted);
  font-size: 14px;
}

code {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

.endpoint-panel code {
  overflow-wrap: anywhere;
  color: var(--accent-strong);
  font-size: 20px;
  font-weight: 800;
}

.section {
  padding: 48px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 22px;
}

.section-heading p,
.card p,
.notice p,
.support p {
  color: var(--muted);
}

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

.card {
  padding: 22px;
}

.card.featured {
  border-color: rgba(15, 118, 110, 0.55);
}

.card ul {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.notice-list {
  display: grid;
  gap: 14px;
}

.notice {
  padding: 20px;
}

.date {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--warn);
  font-size: 13px;
  font-weight: 800;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 1.2fr);
  gap: 24px;
  align-items: start;
}

pre {
  margin: 0;
  overflow: auto;
  padding: 20px;
}

.support {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px;
}

.support-link {
  color: var(--accent-strong);
  font-weight: 800;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 760px) {
  .topbar,
  .footer,
  .support {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    flex-wrap: wrap;
  }

  .hero,
  .split,
  .grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 48px;
  }
}