:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --border: #e3e6ef;
  --text: #1e293b;
  --muted: #64748b;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(31, 38, 135, 0.08);
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--accent-hover);
}

.site-shell {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  position: relative;
}

.site-shell::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px circle at 12% 18%, rgba(139, 92, 246, 0.14), transparent 45%),
    radial-gradient(1000px circle at 88% 12%, rgba(99, 102, 241, 0.12), transparent 45%),
    linear-gradient(180deg, #eef2ff 0%, var(--bg) 40%, #eef2f8 100%);
}

.site-header {
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid rgba(226, 232, 240, 0.9);
  box-shadow: 0 1px 0 rgba(99, 102, 241, 0.06);
}

.site-header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
}

.site-brand:hover {
  color: var(--text);
}

.site-brand-wordmark {
  height: 32px;
  width: auto;
  display: block;
}

.site-brand-divider {
  width: 1px;
  height: 28px;
  background: linear-gradient(180deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
}

.site-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  gap: 2px;
}

.site-brand-sub {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.site-brand-meta {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
}

.site-nav a {
  color: var(--muted);
}

.site-nav a:hover,
.site-nav a[aria-current='page'] {
  color: var(--accent);
}

.site-main {
  flex: 1 1 auto;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}

.site-main--center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-hero {
  width: min(100%, 520px);
  text-align: center;
  animation: site-fade-up 0.6s ease both;
}

@keyframes site-fade-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-hero {
    animation: none;
  }
}

.site-card {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(226, 232, 240, 0.95);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px) saturate(1.1);
  padding: 48px 40px 44px;
}

@media (max-width: 560px) {
  .site-card {
    padding: 36px 24px 32px;
  }
}

.site-hero-wordmark {
  height: 40px;
  width: auto;
  margin: 0 auto 20px;
  display: block;
}

.site-hero-divider {
  width: 48px;
  height: 3px;
  margin: 0 auto 24px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--accent), #8b5cf6, transparent);
  opacity: 0.85;
}

.site-hero-kicker {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.site-hero-title {
  margin: 0 0 14px;
  font-size: clamp(1.35rem, 4vw, 1.65rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.25;
}

.site-hero-lead {
  margin: 0;
  font-size: 16px;
  color: var(--muted);
  max-width: 34ch;
  margin-inline: auto;
}

.site-doc {
  animation: site-fade-up 0.5s ease both;
}

.site-doc-header {
  margin-bottom: 32px;
}

.site-doc-header h1 {
  margin: 0 0 8px;
  font-size: clamp(1.75rem, 4vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.site-doc-meta {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.site-prose {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px 36px;
}

@media (max-width: 560px) {
  .site-prose {
    padding: 24px 20px;
  }
}

.site-prose h2 {
  margin: 28px 0 10px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.site-prose h2:first-child {
  margin-top: 0;
}

.site-prose p,
.site-prose li {
  margin: 0 0 12px;
  color: var(--text);
  font-size: 15px;
}

.site-prose ul {
  margin: 0 0 16px;
  padding-left: 1.25rem;
}

.site-prose li {
  margin-bottom: 8px;
}

.site-footer {
  flex-shrink: 0;
  border-top: 1px solid rgba(226, 232, 240, 0.9);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(16px) saturate(1.2);
}

.site-footer-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 22px 24px 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  font-size: 13px;
  color: var(--muted);
}

.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.site-footer-links a {
  font-size: 13px;
  color: var(--muted);
}

.site-footer-links a:hover {
  color: var(--accent);
}