:root {
  --bg: #edf1f8;
  --panel: #f5f8ff;
  --surface: #ffffff;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.16);
  --text: #111827;
  --muted: #6b7280;
  --accent: #1a2d4a;
  --accent-hover: #243d62;
  --accent-soft: rgba(26, 45, 74, 0.08);
  --radius: 12px;
  --radius-lg: 18px;
  --shadow: 0 10px 24px rgba(17, 24, 39, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Inter", "Segoe UI", sans-serif;
  color: var(--text);
  line-height: 1.6;
  background:
    radial-gradient(900px 540px at 10% -8%, rgba(26, 45, 74, 0.13), transparent 60%),
    linear-gradient(180deg, #f6f9ff 0%, #edf2fa 100%);
}

.docs-shell {
  max-width: 1140px;
  margin: 0 auto;
  padding: 22px 16px 48px;
}

.docs-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(245, 248, 255, 0.86);
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 20px rgba(17, 24, 39, 0.07);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.docs-nav {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border: 1px solid rgba(17, 24, 39, 0.08);
  border-radius: 12px;
  background: rgba(232, 240, 254, 0.66);
  flex-wrap: wrap;
  justify-content: flex-end;
}

.link-btn,
.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 600;
  border-radius: 9px;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid transparent;
  transition: all 140ms ease;
}

.docs-nav .link-btn {
  min-width: 104px;
}

.docs-nav .primary-btn {
  min-width: 92px;
}

.link-btn {
  color: var(--text);
}

.link-btn:hover,
.link-btn.is-active {
  border-color: rgba(26, 45, 74, 0.16);
  background: rgba(255, 255, 255, 0.92);
  color: var(--accent);
}

.primary-btn {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
  border-radius: 9px;
  min-height: 34px;
  padding: 0 14px;
}

.primary-btn:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.docs-card {
  margin-top: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 24px;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--muted);
}

h1 {
  margin: 8px 0 8px;
  font-size: clamp(1.75rem, 3.8vw, 2.4rem);
  line-height: 1.15;
}

.lead {
  margin: 0;
  font-size: 1.02rem;
  color: #334155;
}

h2 {
  margin: 28px 0 10px;
  font-size: 1.2rem;
}

p {
  margin: 0 0 10px;
}

ul,
ol {
  margin: 0 0 14px;
  padding-left: 20px;
}

li {
  margin-bottom: 6px;
}

.info-strip {
  margin-top: 16px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  background: var(--panel);
}

.cards-grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.info-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  padding: 14px;
}

.info-card h3 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.info-card p {
  margin: 0;
  color: #374151;
  font-size: 0.93rem;
}

.footer-row {
  margin-top: 20px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

code {
  font-family: "JetBrains Mono", Consolas, monospace;
  background: #e8eef7;
  border-radius: 6px;
  padding: 1px 6px;
  font-size: 0.86em;
}

@media (max-width: 820px) {
  .docs-topbar {
    border-radius: 16px;
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .brand,
  .docs-nav {
    width: 100%;
    justify-content: flex-start;
  }

  .docs-nav {
    border-radius: 10px;
  }

  .docs-nav .link-btn,
  .docs-nav .primary-btn {
    min-width: 0;
    flex: 1 1 calc(50% - 6px);
  }

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