:root {
  --color-bg-dark: #121820;
  --color-primary: #00bfa6;
  --color-primary-hover: #00a894;
  --color-secondary: #ff6b6b;
  --color-text-primary: #121820;
  --color-text-secondary: #4b5563;
  --color-text-muted: #6b7280;
  --color-surface: #f3f4f6;
  --color-border: #e2e8f0;
  --color-white: #ffffff;
  --color-light: #fefefe;
  --color-teal-light: #e6faf6;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --radius-sm: 6px;
  --radius-md: 10px;
  --transition: 0.25s ease;
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-primary);
  background: var(--color-light);
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--color-bg-dark);
}

.site-nav .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-nav .nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-white);
  text-decoration: none;
}

.site-nav .nav-logo .logo-icon {
  width: 34px;
  height: 34px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--color-bg-dark);
  font-weight: 900;
}

.site-nav .nav-home-link {
  color: #cbd5e1;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
}

.site-nav .nav-home-link:hover {
  color: var(--color-primary);
  background: rgba(255,255,255,0.06);
}

.page-header {
  padding: 120px 0 48px;
  background: var(--color-bg-dark);
  text-align: center;
}

.page-header h1 {
  color: var(--color-white);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.page-header .last-updated {
  color: #94a3b8;
  font-size: 0.9rem;
}

.toc {
  background: var(--color-teal-light);
  border: 1px solid #b2ece0;
  border-radius: var(--radius-md);
  padding: 28px 32px;
  margin: 32px 0 48px;
}

.toc h3 {
  font-size: 1.05rem;
  margin-bottom: 16px;
  color: #065f46;
}

.toc ol {
  padding-left: 20px;
  columns: 2;
  column-gap: 32px;
}

.toc ol li {
  margin-bottom: 6px;
  font-size: 0.9rem;
  break-inside: avoid;
}

.toc ol li a {
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.toc ol li a:hover {
  color: var(--color-primary);
}

.legal-content {
  padding: 0 0 80px;
}

.legal-content section {
  margin-bottom: 48px;
}

.legal-content h2 {
  font-size: 1.5rem;
  color: var(--color-text-primary);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
}

.legal-content h3 {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin: 20px 0 10px;
}

.legal-content p {
  margin-bottom: 14px;
  color: var(--color-text-secondary);
}

.legal-content ul,
.legal-content ol {
  margin: 0 0 16px 24px;
  color: var(--color-text-secondary);
}

.legal-content ul li,
.legal-content ol li {
  margin-bottom: 8px;
}

.legal-content strong {
  color: var(--color-text-primary);
}

.legal-content a {
  color: var(--color-primary);
  text-decoration: none;
}

.legal-content a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

.site-footer {
  background: var(--color-bg-dark);
  color: #cbd5e1;
  padding: 20px 0;
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

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

.site-footer .footer-legal-links a {
  color: #94a3b8;
  font-size: 0.85rem;
  text-decoration: none;
  transition: color var(--transition);
}

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

.site-footer span {
  font-size: 0.85rem;
  color: #64748b;
}

.back-to-top {
  display: inline-block;
  margin-top: 40px;
  padding: 10px 24px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: background var(--transition);
}

.back-to-top:hover {
  background: var(--color-primary-hover);
  color: var(--color-white);
}

@media (max-width: 768px) {
  .toc ol {
    columns: 1;
  }

  .site-footer .container {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }
}