:root {
  --bg: #fafaf8; --fg: #1d1d1f; --muted: #6b6b70; --line: #e2e2e0; --card: #ffffff;
  --accent: #c2410c; --good: #15803d; --good-bg: #ecfdf3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141416; --fg: #ececee; --muted: #9a9aa2; --line: #2c2c31; --card: #1c1c20;
    --accent: #fb923c; --good: #4ade80; --good-bg: #13261b;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.7 system-ui, -apple-system, "Hiragino Sans", "Yu Gothic UI", sans-serif; }
a { color: var(--accent); }
header, main, footer { max-width: 880px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 20px; padding-bottom: 8px; }
header .name { font-weight: 700; font-size: 20px; color: var(--fg); text-decoration: none; }
header p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
h1 { font-size: 22px; line-height: 1.4; margin: 24px 0 8px; }
h2 { font-size: 17px; margin: 28px 0 8px; }
.muted { color: var(--muted); font-size: 14px; }
form.search { display: flex; gap: 8px; margin: 16px 0; }
form.search input { flex: 1; min-width: 0; font: inherit; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--fg); }
form.search button { font: inherit; padding: 8px 16px; border: 0; border-radius: 8px; background: var(--accent); color: #fff; cursor: pointer; }
#result { min-height: 1.7em; }
.list { list-style: none; padding: 0; margin: 0; }
.list li { border-top: 1px solid var(--line); }
.list a { display: block; padding: 12px 8px; color: var(--fg); text-decoration: none; border-radius: 8px; }
.list a:hover, .list a:focus-visible { background: var(--card); }
.list .titles { display: block; font-size: 14px; color: var(--muted); overflow-wrap: anywhere; }
.pair { display: grid; grid-template-columns: 1fr; gap: 12px; margin: 16px 0; }
@media (min-width: 720px) { .pair { grid-template-columns: 1fr 1fr; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; overflow-wrap: anywhere; }
.card .label { font-size: 13px; font-weight: 700; color: var(--muted); }
.card .title { font-weight: 700; margin: 4px 0 8px; }
.card dl { display: grid; grid-template-columns: auto 1fr; gap: 2px 12px; margin: 0; font-size: 14px; }
.card dt { color: var(--muted); }
.card dd { margin: 0; }
.card img { width: 100%; height: auto; border-radius: 8px; margin-bottom: 8px; }
.card.source { border-color: var(--good); }
.cheaper { background: var(--good-bg); color: var(--good); border-radius: 8px; padding: 8px 12px; font-weight: 700; }
.samples { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; }
.samples img { width: 100%; height: auto; border-radius: 6px; }
.btn { display: inline-block; margin-top: 12px; padding: 8px 16px; border-radius: 8px; background: var(--accent); color: #fff; text-decoration: none; font-weight: 700; }
footer { margin-top: 48px; padding-top: 16px; padding-bottom: 32px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
#age { position: fixed; inset: 0; background: var(--bg); display: none; align-items: center; justify-content: center; padding: 16px; z-index: 10; }
#age .box { max-width: 420px; text-align: center; }
#age button { font: inherit; margin: 8px; padding: 8px 20px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--fg); cursor: pointer; }
#age button.yes { background: var(--accent); color: #fff; border: 0; }