:root {
  --color-bg: #f8f9fb;
  --color-surface: #ffffff;
  --color-text: #1a1d26;
  --color-muted: #5c6478;
  --color-accent: #2563eb;
  --color-border: #e4e8ef;
  --color-heading: #0f172a;
  --max-width: 760px;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.04);
  --font-sans: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  text-decoration-thickness: 2px;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.5rem;
}

.site-header__inner {
  max-width: calc(var(--max-width) + 3rem);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-header__brand {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-heading);
  text-decoration: none;
}

.site-header__nav a {
  font-size: 0.875rem;
  color: var(--color-muted);
  text-decoration: none;
}

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

.page {
  max-width: calc(var(--max-width) + 3rem);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.page--index {
  max-width: 640px;
}

.policy-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.policy-card + .policy-card {
  margin-top: 1rem;
}

.policy-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
}

.policy-card p {
  margin: 0 0 1rem;
  color: var(--color-muted);
  font-size: 0.9375rem;
}

.policy-card a.button {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--color-accent);
  color: #fff;
  border-radius: 8px;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
}

.policy-card a.button:hover {
  background: #1d4ed8;
}

.policy {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2.5rem 2rem;
}

@media (max-width: 640px) {
  .policy {
    padding: 1.75rem 1.25rem;
  }
}

.policy__meta {
  margin: 0 0 1.5rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.policy h1 {
  margin: 0 0 1.5rem;
  font-size: clamp(1.5rem, 4vw, 1.875rem);
  line-height: 1.25;
  color: var(--color-heading);
  letter-spacing: -0.02em;
}

.policy h2 {
  margin: 2.25rem 0 0.75rem;
  font-size: 1.125rem;
  color: var(--color-heading);
  scroll-margin-top: 1rem;
}

.policy h3 {
  margin: 1.5rem 0 0.5rem;
  font-size: 1rem;
  color: var(--color-heading);
}

.policy p {
  margin: 0 0 1rem;
}

.policy ul,
.policy ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
}

.policy li {
  margin-bottom: 0.35rem;
}

.policy li::marker {
  color: var(--color-muted);
}

.policy strong {
  color: var(--color-heading);
  font-weight: 600;
}

.policy hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}

.policy__toc {
  background: #f1f5f9;
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin: 0 0 2rem;
}

.policy__toc-title {
  margin: 0 0 0.75rem;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}

.policy__toc ol {
  margin: 0;
  padding-left: 1.25rem;
  columns: 2;
  column-gap: 2rem;
}

@media (max-width: 540px) {
  .policy__toc ol {
    columns: 1;
  }
}

.policy__toc a {
  font-size: 0.875rem;
  color: var(--color-text);
  text-decoration: none;
}

.policy__toc a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.site-footer {
  max-width: calc(var(--max-width) + 3rem);
  margin: 0 auto;
  padding: 0 1.5rem 2rem;
  font-size: 0.8125rem;
  color: var(--color-muted);
  text-align: center;
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.site-footer__logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.site-footer__credit {
  margin: 0;
  line-height: 1.6;
}

.site-footer__credit a {
  color: var(--color-accent);
  text-decoration: none;
}

.site-footer__credit a:hover {
  text-decoration: underline;
}

.site-footer__meta {
  margin: 1rem 0 0;
  font-size: 0.75rem;
  color: var(--color-muted);
}