:root {
  --bg: #fafaf7; --surface: #ffffff; --text: #1f2328; --muted: #5f6670;
  --line: #e3e3dc; --accent: #bf0000; --accent-text: #ffffff; --soft: #f3f1ea;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a; --surface: #1d2024; --text: #e8e8e3; --muted: #a2a8b0;
    --line: #33373d; --accent: #e5484d; --accent-text: #ffffff; --soft: #24272c;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.8 "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif; }
a { color: inherit; }
main, .site-header, footer { max-width: 880px; margin: 0 auto; padding: 0 16px; }
.profile { background: var(--soft); border-radius: 12px; padding: 14px 16px; margin: 32px 0 0; font-size: 14px; }
.profile-head { display: flex; gap: 12px; align-items: center; margin-bottom: 8px; }
.profile-title span { display: block; font-size: 12px; font-weight: 400; color: var(--muted); }
.avatar { flex: none; border-radius: 50%; }
.avatar-large { display: block; border-radius: 50%; margin: 8px 0; }
.profile p { margin: 0 0 6px; }
.profile-title { font-weight: 700; }
.profile-link { margin: 0 !important; font-size: 13px; }
.pr { margin: 0; padding: 6px 16px; font-size: 12px; text-align: center; background: var(--soft); color: var(--muted); }
.demo { margin: 0; padding: 6px; text-align: center; background: #ffd34d; color: #000; font-weight: 700; }
.site-header { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; padding-top: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.logo { font-weight: 800; text-decoration: none; font-size: 18px; display: flex; align-items: center; gap: 6px; }
.hero { display: grid; grid-template-columns: 1fr 180px; gap: 20px; align-items: center; }
.hero img { width: 100%; height: auto; }
.site-header { justify-content: space-between; position: relative; }
.menu summary { list-style: none; font-size: 14px; font-weight: 700; padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); }
.menu summary::-webkit-details-marker { display: none; }
.menu summary::after { content: " ▾"; }
.menu[open] summary::after { content: " ▴"; }
.menu { background: none; border: 0; padding: 0; margin: 0; }
.menu-panel { position: absolute; top: 100%; left: 0; right: 0; z-index: 10; background: var(--surface); border-bottom: 1px solid var(--line); padding: 4px 16px 16px; box-shadow: 0 8px 16px rgba(0,0,0,.08); }
.menu-label { margin: 12px 0 6px; font-size: 12px; font-weight: 700; color: var(--accent); }
.menu nav { display: flex; flex-wrap: wrap; gap: 8px; }
.menu nav a { text-decoration: none; font-size: 14px; padding: 6px 12px; border-radius: 999px; background: var(--soft); }
h1 { font-size: 26px; line-height: 1.4; margin: 28px 0 4px; }
h2 { font-size: 21px; margin: 40px 0 12px; padding-left: 10px; border-left: 4px solid var(--accent); }
h3 { font-size: 17px; margin: 22px 0 6px; }
.column p { line-height: 1.9; }
.crumb { font-size: 13px; color: var(--muted); margin: 20px 0 0; }
.updated { color: var(--muted); font-size: 13px; margin: 0 0 16px; }
.lead { font-size: 16px; }
.highlights { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.hl { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; text-decoration: none; font-size: 14px; }
.hl.drop { border-color: var(--accent); }
.hl-label { display: block; font-size: 12px; font-weight: 700; color: var(--accent); }
.basis { border-left: 4px solid var(--accent); margin: 16px 0; font-size: 14px; }
.basis ul { margin: 8px 0 0; padding-left: 1.2em; }
mark { background: #fff2a8; color: #1f2328; padding: 0 4px; border-radius: 3px; font-weight: 700; }
.point { margin: 0 0 4px; font-size: 14px; }
mark.tag { font-size: 11px; margin-right: 6px; white-space: nowrap; }
.quick { list-style: none; margin: 0; padding: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; }
.quick li + li { border-top: 1px solid var(--line); }
.quick a { display: flex; gap: 10px; align-items: center; padding: 8px 12px; text-decoration: none; }
.quick img { border-radius: 6px; flex: none; object-fit: cover; }
.q-rank { flex: none; width: 24px; height: 24px; border-radius: 50%; background: var(--accent); color: var(--accent-text); font-size: 13px; font-weight: 800; display: grid; place-items: center; }
.q-body { flex: 1; min-width: 0; display: flex; flex-direction: column; line-height: 1.4; }
.q-name { font-size: 14px; font-weight: 700; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.q-meta { font-size: 12px; color: var(--muted); }
.q-price { flex: none; font-weight: 800; font-size: 14px; }
.quick mark.tag { align-self: flex-start; margin-bottom: 2px; }
.item { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin: 18px 0; }
.item h3 { margin-top: 0; display: flex; gap: 10px; align-items: center; }
.badge { background: var(--accent); color: var(--accent-text); border-radius: 6px; padding: 0 8px; font-size: 14px; flex: none; }
.item-top { display: grid; grid-template-columns: 200px 1fr; gap: 16px; align-items: start; margin-bottom: 8px; }
.item-top.no-image { grid-template-columns: 1fr; }
.item-top img { width: 100%; height: auto; border-radius: 8px; }
.price { margin: 0; font-size: 22px; font-weight: 800; line-height: 1.4; }
.price small { display: block; font-size: 12px; font-weight: 400; color: var(--muted); }
.meta { font-weight: 700; margin: 0 0 6px; }
.item-name { font-size: 12px; color: var(--muted); margin: 0; line-height: 1.6; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; }
.pc { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; font-size: 14px; }
.pc ul { margin: 4px 0; padding-left: 1.2em; }
.best-for { background: var(--soft); padding: 8px 12px; border-radius: 6px; font-size: 14px; }
.btn { display: inline-block; background: var(--accent); color: var(--accent-text); text-decoration: none; font-weight: 700; padding: 10px 22px; border-radius: 999px; }
.btn.small { padding: 4px 12px; font-size: 13px; background: transparent; color: var(--text); border: 1px solid var(--line); font-weight: 600; }
.shops-label { font-size: 13px; color: var(--muted); margin: 14px 0 6px; }
.shops { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.shop { display: block; text-align: center; text-decoration: none; font-weight: 700; font-size: 14px;
  padding: 10px 6px; border-radius: 8px; color: #fff; }
.shop.amazon { background: #f79400; }
.shop.rakuten { background: #bf0000; }
.shop.yahoo { background: #1a73e8; }
.shop:hover { opacity: .88; }
details { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; margin: 8px 0; }
summary { cursor: pointer; font-weight: 700; }
.method { font-size: 13px; color: var(--muted); margin-top: 32px; }
.feature { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin: 24px 0; }
.feature h2 { margin: 4px 0 14px; }
.feature h2 a { text-decoration: none; }
.feature-label { margin: 0; font-size: 13px; font-weight: 700; color: var(--accent); }
.feature-items { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.feature-item { position: relative; display: flex; flex-direction: column; gap: 4px; text-decoration: none; font-size: 13px; }
.feature-item img { width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; border-radius: 8px; }
.thumb { position: relative; display: block; min-height: 30px; }
.thumb .badge { position: absolute; top: 6px; left: 6px; }
.feature h2 { border-left: 0; padding-left: 0; }
.fi-name { font-weight: 700; line-height: 1.4; }
.fi-meta { color: var(--muted); font-size: 12px; }
.tip { background: var(--soft); border-radius: 10px; padding: 12px 14px; margin-top: 14px; font-size: 14px; }
.tip p { margin: 0; }
.tip-label { font-size: 12px; font-weight: 700; color: var(--accent); }
.tip-point { font-weight: 700; margin: 2px 0 4px !important; }
.feature-more { margin: 12px 0 0; font-size: 14px; }
.news { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.news a { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; text-decoration: none; font-size: 14px; }
.card p + p { margin-top: 2px; }
.banner { display: block; background: var(--surface); border: 2px solid var(--accent); border-radius: 12px; padding: 14px 16px; margin: 20px 0; text-decoration: none; }
.banner strong { display: block; font-size: 17px; margin: 2px 0; }
.banner span:last-child { font-size: 13px; color: var(--muted); }
.service { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; margin: 14px 0; }
.service h3 { margin: 0 0 6px; }
.service p { margin: 0 0 6px; font-size: 15px; }
.service ul { margin: 0 0 6px; padding-left: 1.2em; font-size: 14px; }
.service-pr { position: absolute; top: 10px; right: 12px; font-size: 11px !important; color: var(--muted); border: 1px solid var(--line); border-radius: 4px; padding: 0 6px; }
.service-ad { margin-top: 8px; }
/* A8.net のテキスト広告はコードを変えずに、見た目だけボタンにする */
.service-btn a { display: block; text-align: center; background: var(--accent); color: var(--accent-text); font-weight: 700; text-decoration: none; padding: 12px 10px; border-radius: 999px; line-height: 1.5; }
.service-btn img { display: block; }
.answer { background: var(--surface); border: 2px solid var(--accent); border-radius: 12px; padding: 12px 16px; margin: 16px 0; }
.answer p { margin: 0; }
.answer-label { font-size: 12px; font-weight: 700; color: var(--accent); margin-bottom: 4px !important; }
.table-scroll { overflow-x: auto; }
.qtable { width: 100%; border-collapse: collapse; background: var(--surface); font-size: 14px; }
.qtable th, .qtable td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.qtable th { background: var(--soft); white-space: nowrap; }
.qtable.numeric td { white-space: nowrap; }
.col-box { border: 2px solid var(--accent); border-radius: 12px; padding: 12px 16px; margin: 20px 0; }
.col-box summary { list-style: none; }
.col-box summary::-webkit-details-marker { display: none; }
.col-box summary strong { display: block; font-size: 15px; line-height: 1.5; margin-top: 2px; }
.col-box summary::after { content: "タップしてコラムをすべて見る ▾"; display: block; font-size: 12px; color: var(--muted); margin-top: 4px; }
.col-box[open] summary::after { content: "閉じる ▴"; }
.col-list { list-style: none; margin: 10px 0 0; padding: 0; font-size: 14px; }
.col-list li + li { border-top: 1px solid var(--line); }
.col-list a { display: block; padding: 8px 0; text-decoration: none; }
.col-hero { width: 100%; height: auto; border-radius: 12px; margin: 8px 0 4px; }
.col-item { display: flex !important; gap: 10px; align-items: center; }
.col-item img { flex: none; border-radius: 6px; object-fit: cover; }
.col-date { display: block; font-size: 12px; color: var(--muted); }
.toc { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin: 16px 0; display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 14px; }
.toc-label { width: 100%; margin: 6px 0 0; font-size: 12px; font-weight: 700; color: var(--accent); }
.matome { border-bottom: 1px solid var(--line); padding-bottom: 16px; }
.matome-picks { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pick { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.pick-body { display: flex; gap: 10px; align-items: center; margin: 6px 0 10px; }
.pick-body img { border-radius: 8px; flex: none; }
.pick-name { margin: 0; font-weight: 700; font-size: 14px; line-height: 1.5; }
.pick-meta { margin: 2px 0 0; font-size: 13px; color: var(--muted); }
.pick .shops { grid-template-columns: 1fr; gap: 6px; }
.pick .shop { padding: 7px 6px; font-size: 13px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; margin: 20px 0; }
.card { display: flex; gap: 12px; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px; text-decoration: none; }
.card h2 { border: 0; padding: 0; margin: 0; font-size: 17px; }
.card p { margin: 0; font-size: 13px; color: var(--muted); }
.card img { border-radius: 8px; width: 80px; height: 80px; object-fit: cover; }
footer { margin-top: 48px; padding-top: 16px; padding-bottom: 32px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
@media (max-width: 600px) {
  .item { padding: 14px; }
  .item h3 { font-size: 16px; }
  .item-top { grid-template-columns: 112px 1fr; gap: 12px; }
  .item-top.no-image { grid-template-columns: 1fr; }
  .price { font-size: 20px; }
  .highlights { grid-template-columns: 1fr 1fr; gap: 8px; }
  .hl { padding: 8px 10px; font-size: 13px; }
  .pc { grid-template-columns: 1fr; gap: 0; }
  .matome-picks { grid-template-columns: 1fr; }
  .feature-items { grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
  .feature-item { font-size: 12px; }
  .shop { padding: 12px 4px; }
  h1 { font-size: 22px; }
  .logo { font-size: 16px; }
  .menu summary { padding: 6px 12px; font-size: 13px; }
  .hero { grid-template-columns: 1fr 120px; gap: 10px; }
  .site-header { flex-wrap: nowrap; gap: 8px; }
  .logo { white-space: nowrap; }
  .hero .lead { font-size: 14px; }
}