:root {
  --bg: #f7f4ef;
  --surface: #fffdf9;
  --ink: #1c1917;
  --muted: #57534e;
  --line: #e7e0d6;
  --accent: #0f5c4c;
  --accent-soft: #e6f2ef;
  --max: 42rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, #e6f2ef 0%, transparent 55%),
    linear-gradient(180deg, #fbf8f3 0%, var(--bg) 40%, #f3efe8 100%);
  line-height: 1.65;
  font-size: 1.05rem;
}

a {
  color: var(--accent);
  text-underline-offset: 0.15em;
}

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

.wrap {
  width: min(100% - 2rem, 48rem);
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 249, 0.9);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.5rem;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--ink);
  font-size: 1.15rem;
}

nav a {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.hero {
  padding: 3.5rem 0 4rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  line-height: 1.15;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.lede {
  color: var(--muted);
  font-size: 1.15rem;
  max-width: 36rem;
  margin: 0 0 1.5rem;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 0.75rem 1.15rem;
  border-radius: 0.65rem;
}

.button:hover {
  filter: brightness(1.05);
  text-decoration: none;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.policy {
  padding: 2rem 0 4rem;
}

.policy-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: clamp(1.25rem, 3vw, 2.25rem);
  box-shadow: 0 10px 30px rgba(28, 25, 23, 0.04);
}

.policy h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.meta {
  color: var(--muted);
  margin: 0 0 1.75rem;
  font-size: 0.95rem;
}

.toc {
  background: var(--accent-soft);
  border-radius: 0.75rem;
  padding: 1rem 1.15rem;
  margin: 0 0 2rem;
}

.toc strong {
  display: block;
  margin-bottom: 0.5rem;
}

.toc ol {
  margin: 0;
  padding-left: 1.2rem;
}

.toc li {
  margin: 0.25rem 0;
}

.policy h2 {
  margin: 2rem 0 0.65rem;
  font-size: 1.25rem;
  scroll-margin-top: 4.5rem;
}

.policy h3 {
  margin: 1.25rem 0 0.4rem;
  font-size: 1.05rem;
}

.policy p,
.policy ul {
  margin: 0 0 0.9rem;
}

.policy ul {
  padding-left: 1.2rem;
}

.policy li {
  margin: 0.3rem 0;
}

.note {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  padding: 0.85rem 1rem;
  border-radius: 0 0.5rem 0.5rem 0;
  margin: 1rem 0 1.25rem;
}

@media (max-width: 520px) {
  body {
    font-size: 1rem;
  }

  .policy-card {
    border-radius: 0.75rem;
  }
}