:root {
  color-scheme: light dark;
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #1d1d1f;
  --text-muted: #86868b;
  --border: #e2e2e7;
  --primary: #0f8f56;
  --primary-strong: #0a7545;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.08);
  --max-width: 720px;
  --page-width: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --card: #1c1c1e;
    --text: #f5f5f7;
    --text-muted: #a1a1a6;
    --border: #38383a;
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

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

a:hover {
  text-decoration: underline;
}

img,
svg {
  display: block;
  max-width: 100%;
}

.site-shell {
  margin: 0 auto;
  max-width: var(--page-width);
  min-height: 100vh;
  padding: 24px 20px 48px;
}

.site-header {
  align-items: center;
  display: flex;
  gap: 14px;
  justify-content: space-between;
  margin: 0 auto 40px;
  max-width: var(--page-width);
}

.brand {
  align-items: center;
  color: inherit;
  display: inline-flex;
  gap: 12px;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  height: 44px;
  width: 44px;
}

.brand-name {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.site-nav {
  display: flex;
  gap: 18px;
}

.site-nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 600;
}

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

.hero {
  margin: 0 auto;
  max-width: var(--page-width);
  padding: 12px 0 28px;
}

.hero-card,
.content-card,
.policy-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero-card {
  display: grid;
  gap: 28px;
  padding: 36px 28px;
}

@media (min-width: 768px) {
  .hero-card {
    align-items: center;
    grid-template-columns: 88px 1fr;
    padding: 44px 40px;
  }
}

.hero-copy h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin: 0 0 12px;
}

.hero-copy p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin: 0 0 22px;
  max-width: 42rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  align-items: center;
  border-radius: 999px;
  display: inline-flex;
  font-size: 0.95rem;
  font-weight: 700;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  text-decoration: none;
}

.button:hover {
  text-decoration: none;
}

.button-primary {
  background: var(--primary);
  color: #ffffff;
}

.button-primary:hover {
  background: var(--primary-strong);
}

.button-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.feature-grid {
  display: grid;
  gap: 16px;
  margin: 24px auto 0;
  max-width: var(--page-width);
}

@media (min-width: 768px) {
  .feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 22px;
}

.feature-card h2 {
  font-size: 1rem;
  margin: 0 0 8px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
}

.policy-layout {
  margin: 0 auto;
  max-width: var(--max-width);
}

.policy-card {
  padding: 32px 24px;
}

@media (min-width: 768px) {
  .policy-card {
    padding: 40px 44px;
  }
}

.policy-card h1 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 8px;
}

.policy-meta {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin: 0 0 28px;
}

.policy-card h2 {
  font-size: 1.1rem;
  margin: 28px 0 10px;
}

.policy-card p,
.policy-card li {
  color: var(--text);
  font-size: 0.98rem;
  margin: 0 0 12px;
}

.policy-card ul {
  margin: 0 0 12px;
  padding-left: 1.2rem;
}

.site-footer {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 40px auto 0;
  max-width: var(--page-width);
  text-align: center;
}