:root {
  --bg: #f6f7f8;
  --panel: #ffffff;
  --panel-border: #d3d6da;
  --border-strong: #878a8c;
  --text-strong: #1a1a1b;
  --text-soft: #565758;
  --accent: #1a1a1b;
  --accent-contrast: #ffffff;
  --accent-soft: rgba(26, 26, 27, 0.05);
  --radius-sm: 10px;
  --radius-md: 16px;
  --shadow-sm: 0 1px 2px rgba(15, 20, 25, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121213;
    --panel: #1c1c1e;
    --panel-border: #3a3a3c;
    --border-strong: #565758;
    --text-strong: #f6f7f8;
    --text-soft: #b0b3b5;
    --accent: #f6f7f8;
    --accent-contrast: #121213;
    --accent-soft: rgba(246, 247, 248, 0.08);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.55);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text-strong);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

.page-shell {
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(20px, 5vw, 48px) clamp(18px, 4vw, 28px) 64px;
}

.page-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: clamp(24px, 6vw, 40px);
}

.page-nav a {
  color: var(--text-strong);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.page-nav .brand {
  font-size: 1.1rem;
}

.page-nav .back-link {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-soft);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  background: var(--panel);
  box-shadow: var(--shadow-sm);
}

.page-nav .back-link:hover {
  border-color: var(--border-strong);
}

.page-eyebrow {
  margin: 0 0 6px;
  color: var(--text-soft);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  line-height: 1.15;
}

h2 {
  margin: 2.2em 0 0.6em;
  font-size: 1.2rem;
}

p,
li {
  color: var(--text-soft);
  font-size: 0.98rem;
}

a {
  color: var(--text-strong);
}

.updated-note {
  margin: 0 0 2em;
  font-size: 0.85rem;
  color: var(--text-soft);
}

.card {
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  background: var(--panel);
  box-shadow: var(--shadow-sm);
  padding: clamp(16px, 3vw, 22px);
  margin: 1.2em 0;
}

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

.card p:last-child {
  margin-bottom: 0;
}

.row-list {
  display: grid;
  gap: 10px;
  margin: 1em 0;
  padding: 0;
  list-style: none;
}

.row-list li {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 12px;
  align-items: baseline;
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 10px;
}

.row-list li:last-child {
  border-bottom: 0;
}

.row-list strong {
  color: var(--text-strong);
}

.disclaimer {
  margin-top: 2.5em;
  padding-top: 1.2em;
  border-top: 1px solid var(--panel-border);
  font-size: 0.82rem;
}

.page-footer {
  margin-top: 3em;
  padding-top: 1.4em;
  border-top: 1px solid var(--panel-border);
  font-size: 0.82rem;
  color: var(--text-soft);
}

.page-footer a {
  color: var(--text-soft);
}