:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #5f6368;
  --accent: #2b6cb0;
  --accent-bg: #eef4fb;
  --border: #e2e2e2;
  --card-bg: #f7f9fc;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #ececec;
    --muted: #a8a8a8;
    --accent: #7bb3ef;
    --accent-bg: #1c2733;
    --border: #2c2c2c;
    --card-bg: #1a1d22;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", "Segoe UI", Roboto, sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px 64px;
}

header.hero {
  text-align: center;
  margin-bottom: 32px;
}

header.hero h1 {
  font-size: 1.9rem;
  margin: 0 0 8px;
}

header.hero p.catch {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0;
}

h1 {
  font-size: 1.6rem;
  line-height: 1.4;
}

h2 {
  font-size: 1.25rem;
  margin-top: 2.2em;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4em;
}

h3 {
  font-size: 1.05rem;
  margin-top: 1.6em;
}

p,
li {
  font-size: 0.98rem;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

ul,
ol {
  padding-left: 1.3em;
}

section.reassurance {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 24px 0 32px;
}

section.reassurance h2 {
  border-bottom: none;
  margin-top: 0;
  padding-bottom: 0;
  font-size: 1.15rem;
}

.reassurance ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.reassurance li {
  position: relative;
  padding: 6px 0 6px 26px;
}

.reassurance li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 6px;
  color: var(--accent);
  font-weight: bold;
}

.features {
  display: grid;
  gap: 16px;
  margin: 16px 0 8px;
}

.features .feature {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
}

.features .feature h3 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.features .feature p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.store-badge-placeholder {
  display: inline-block;
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  color: var(--muted);
  font-size: 0.9rem;
}

footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
  text-align: center;
}

footer nav {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.back-link {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 0.92rem;
}

.updated {
  color: var(--muted);
  font-size: 0.88rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
}

table th,
table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
  vertical-align: top;
}

@media (max-width: 480px) {
  .page {
    padding: 28px 16px 48px;
  }
  header.hero h1 {
    font-size: 1.5rem;
  }
}