:root {
  --page-bg: #f5f8fc;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-solid: #ffffff;
  --text: #14233e;
  --muted: #59708d;
  --line: rgba(20, 35, 62, 0.12);
  --accent: #0d67de;
  --accent-deep: #0a4ba7;
  --accent-soft: #e8f2ff;
  --sea: #0f766e;
  --shadow: 0 18px 50px rgba(20, 35, 62, 0.12);
  --radius: 24px;
  --radius-sm: 16px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(13, 103, 222, 0.12), transparent 34%),
    radial-gradient(circle at top right, rgba(15, 118, 110, 0.12), transparent 28%),
    linear-gradient(180deg, #fbfdff 0%, var(--page-bg) 48%, #eef4fb 100%);
  line-height: 1.6;
}

a {
  color: inherit;
}

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

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(20, 35, 62, 0.08);
  background: rgba(245, 248, 252, 0.84);
  backdrop-filter: blur(18px);
}

.site-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.site-logo-mark {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 28%, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.8) 48%, rgba(220, 234, 255, 0.78) 100%);
  box-shadow: 0 14px 28px rgba(13, 103, 222, 0.16);
}

.site-logo-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 999px;
}

.site-logo-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-logo-wordmark {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.site-logo-tagline {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.site-nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.site-nav-link {
  padding: 10px 14px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  transition: background 0.2s ease, color 0.2s ease;
}

.site-nav-link:hover,
.site-nav-link.is-active {
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
}

.site-hero {
  padding: 56px 0 24px;
}

.site-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px;
  align-items: start;
}

.site-hero-copy,
.site-toc,
.site-section-card,
.site-cta-card,
.site-highlight-card {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.site-hero-copy {
  padding: 36px;
  border-radius: 32px;
  position: relative;
  overflow: hidden;
}

.site-hero-copy::before {
  content: '';
  position: absolute;
  inset: auto -80px -120px auto;
  width: 240px;
  height: 240px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(13, 103, 222, 0.18), transparent 70%);
  pointer-events: none;
}

.site-eyebrow,
.site-section-kicker,
.site-highlight-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.site-hero h1,
.site-section-card h2,
.site-cta-card h2,
.site-toc h2 {
  margin: 0;
  font-family: 'Playfair Display', Georgia, serif;
  letter-spacing: -0.03em;
}

.site-hero h1 {
  margin-top: 14px;
  font-size: clamp(2.5rem, 6vw, 4.4rem);
  line-height: 0.98;
}

.site-summary {
  margin: 18px 0 0;
  max-width: 720px;
  font-size: 1.06rem;
  color: var(--muted);
}

.site-hero-actions,
.site-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.site-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.site-button:hover {
  transform: translateY(-1px);
}

.site-button.primary {
  background: var(--accent);
  color: #fff;
}

.site-button.primary:hover {
  background: var(--accent-deep);
}

.site-button.secondary,
.site-button.ghost {
  background: rgba(255, 255, 255, 0.74);
  border-color: var(--line);
  color: var(--text);
}

.site-button.ghost {
  white-space: nowrap;
}

.site-toc {
  padding: 24px;
  border-radius: 26px;
  position: sticky;
  top: 100px;
}

.site-status-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 0.84rem;
  font-weight: 700;
}

.site-toc h2 {
  margin-top: 18px;
  font-size: 1.4rem;
}

.site-toc ol {
  margin: 16px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
  color: var(--muted);
}

.site-toc a {
  text-decoration: none;
}

.site-main {
  padding: 20px 0 72px;
}

.site-highlight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 28px;
}

.site-highlight-card {
  padding: 22px;
  border-radius: var(--radius);
}

.site-highlight-value {
  display: block;
  margin-top: 10px;
  font-size: 1.15rem;
  line-height: 1.3;
}

.site-content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.site-section-stack {
  display: grid;
  gap: 18px;
}

.site-section-card {
  padding: 28px;
  border-radius: var(--radius);
}

.site-section-card h2 {
  margin-top: 10px;
  font-size: clamp(1.8rem, 4vw, 2.35rem);
}

.site-section-card p {
  margin: 16px 0 0;
  color: var(--muted);
}

.site-article-card h2 {
  margin-top: 10px;
}

.site-article-link {
  text-decoration: none;
}

.site-article-link:hover {
  text-decoration: underline;
}

.site-article-meta {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--sea);
}

.site-bullet-list {
  margin: 18px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
  color: var(--text);
}

.site-bullet-list li::marker {
  color: var(--sea);
}

.site-cta-card {
  margin-top: 28px;
  padding: 28px;
  border-radius: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-cta-card p {
  margin: 14px 0 0;
  color: var(--muted);
  max-width: 680px;
}

.site-footer {
  border-top: 1px solid rgba(20, 35, 62, 0.08);
  background: rgba(255, 255, 255, 0.72);
}

.site-footer-inner {
  padding: 28px 0 40px;
}

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

.site-footer-links a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}

.site-footer-copy {
  margin: 14px 0 0;
  color: var(--muted);
}

@media (max-width: 980px) {
  .site-nav-inner,
  .site-cta-card,
  .site-hero-grid {
    grid-template-columns: 1fr;
  }

  .site-nav-inner {
    display: grid;
    justify-items: start;
    padding: 16px 0;
  }

  .site-nav-links {
    margin-left: 0;
    flex-wrap: wrap;
  }

  .site-toc {
    position: static;
  }

  .site-highlight-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(1120px, calc(100% - 24px));
  }

  .site-hero {
    padding-top: 24px;
  }

  .site-hero-copy,
  .site-toc,
  .site-section-card,
  .site-cta-card,
  .site-highlight-card {
    padding: 22px;
    border-radius: 22px;
  }

  .site-hero-actions,
  .site-cta-actions {
    display: grid;
  }

  .site-button,
  .site-button.ghost {
    width: 100%;
  }
}