@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=Source+Serif+4:wght@400;600&display=swap');

:root {
  --site-ink: #102a43;
  --site-muted: #52667a;
  --site-line: rgba(16, 42, 67, 0.12);
  --site-accent: #0f766e;
  --site-accent-strong: #115e59;
  --site-warm: #f6f3ed;
  --site-panel: rgba(255, 255, 255, 0.92);
  --site-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

body {
  color: var(--site-ink);
  background:
    radial-gradient(circle at top right, rgba(15, 118, 110, 0.08), transparent 32%),
    radial-gradient(circle at top left, rgba(14, 116, 144, 0.08), transparent 28%),
    linear-gradient(180deg, #fbfcfd 0%, #f4f7f9 100%);
  font-family: "IBM Plex Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
}

h1,
h2,
h3,
h4 {
  color: #0b2239;
  font-family: "Source Serif 4", "Noto Serif SC", "Songti SC", serif;
  font-weight: 600;
  letter-spacing: 0.01em;
}

p,
li {
  color: var(--site-muted);
  line-height: 1.75;
}

a {
  color: var(--site-accent-strong);
}

.navbar {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(16, 42, 67, 0.08);
}

.sidebar nav[role="doc-toc"],
.sidebar .sidebar-menu-container {
  border-radius: 16px;
}

.sidebar .sidebar-item-text {
  font-size: 0.95rem;
}

.hero-panel {
  margin: 1.25rem 0 2.5rem;
  padding: 2.8rem;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(246, 250, 251, 0.94)),
    linear-gradient(135deg, rgba(15, 118, 110, 0.05), rgba(14, 116, 144, 0.05));
  box-shadow: var(--site-shadow);
}

.hero-eyebrow {
  display: inline-block;
  margin-bottom: 0.9rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.09);
  color: var(--site-accent-strong);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-title {
  margin: 0;
  font-size: clamp(2.4rem, 6vw, 4.3rem);
  line-height: 1.05;
}

.hero-lead {
  max-width: 54rem;
  margin: 1rem 0 0;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.hero-actions .btn-primary {
  background-color: var(--site-accent);
  border-color: var(--site-accent);
}

.hero-actions .btn-primary:hover,
.hero-actions .btn-primary:focus {
  background-color: var(--site-accent-strong);
  border-color: var(--site-accent-strong);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.8rem;
}

.metric-card,
.feature-card,
.content-card {
  padding: 1.25rem 1.3rem;
  border: 1px solid var(--site-line);
  border-radius: 22px;
  background: var(--site-panel);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.04);
}

.metric-card {
  padding: 1.1rem 1.2rem;
}

.metric-value {
  color: #0b2239;
  font-size: 1.3rem;
  font-weight: 700;
}

.metric-label {
  margin-top: 0.2rem;
  color: var(--site-muted);
  font-size: 0.9rem;
}

.feature-card h3,
.content-card h3 {
  margin-top: 0;
  margin-bottom: 0.45rem;
  font-size: 1.2rem;
}

.feature-card.compact {
  height: 100%;
}

.soft-accent {
  background:
    linear-gradient(180deg, rgba(15, 118, 110, 0.07), rgba(255, 255, 255, 0.94));
}

.callout.callout-style-simple {
  border-left-color: var(--site-accent);
  background: rgba(15, 118, 110, 0.05);
}

div.sourceCode,
pre.sourceCode {
  border: 1px solid rgba(16, 42, 67, 0.08);
  border-radius: 16px;
}

.page-footer {
  border-top: 1px solid rgba(16, 42, 67, 0.08);
}

@media (max-width: 767.98px) {
  .hero-panel {
    padding: 1.6rem;
    border-radius: 22px;
  }

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