:root {
  --accent: #1f3a5f;
  --text: #202124;
  --sub: #5f6368;
  --line: #dadce0;
  --bg: #f6f7f9;
  --card: #ffffff;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", Meiryo, "Noto Sans JP", sans-serif;
  font-size: 15px;
  line-height: 1.75;
}

a { color: var(--accent); }

.wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ヘッダー */
.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  min-height: 56px;
}
.site-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

main { padding: 32px 0 48px; }

h1 {
  font-size: 24px;
  line-height: 1.4;
  margin: 0 0 8px;
}
.lead {
  margin: 0 0 28px;
  color: var(--sub);
}

h2.section {
  font-size: 20px;
  line-height: 1.4;
  margin: 48px 0 12px;
}

/* 拡張機能のカード */
.grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: start;
}
@media (min-width: 720px) {
  .grid { grid-template-columns: 1fr 1fr; }
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  scroll-margin-top: 16px;
  min-width: 0;
}
.card-head {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  align-items: start;
}
.card-head img {
  width: 48px;
  height: 48px;
  display: block;
}
.card-name {
  font-size: 16px;
  line-height: 1.5;
  margin: 0 0 4px;
  overflow-wrap: anywhere;
}
.card-desc {
  margin: 0;
  font-size: 14px;
  color: var(--sub);
  line-height: 1.7;
}
.card-foot {
  margin-top: 16px;
  display: flex;
  justify-content: flex-start;
}

.toggle {
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 16px;
  cursor: pointer;
}
.toggle:hover { background: #f1f4f8; }
.toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.detail {
  border-top: 1px solid var(--line);
  margin-top: 16px;
  padding-top: 4px;
}
.detail[hidden] { display: none; }
.detail h3 {
  font-size: 14px;
  margin: 16px 0 4px;
}
.detail ul,
.detail ol {
  margin: 0;
  padding-left: 1.4em;
  font-size: 14px;
}
.detail li + li { margin-top: 2px; }
.detail p {
  margin: 0;
  font-size: 14px;
}

.store {
  display: inline-block;
  margin-top: 20px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}
.store[aria-disabled="true"] {
  background: #eef0f3;
  color: var(--sub);
  border: 1px solid var(--line);
  cursor: default;
  pointer-events: none;
}
.store:not([aria-disabled="true"]) {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
}

/* 料金 */
.price {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
}
.price p { margin: 0; }
.price p + p { margin-top: 8px; }

/* 本文ページ（プライバシー・お問い合わせ） */
.doc {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px 24px;
}
.doc h2 {
  font-size: 17px;
  line-height: 1.5;
  margin: 28px 0 8px;
}
.doc h2:first-of-type { margin-top: 20px; }
.doc p { margin: 0 0 10px; }
.doc ul { margin: 0 0 10px; padding-left: 1.4em; }
.doc .meta { color: var(--sub); font-size: 14px; margin: 0; }

.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 8px 0 12px;
}
th, td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}
th { background: #f6f7f9; font-weight: 600; }
td:first-child { width: 28%; }

@media (max-width: 600px) {
  .doc { padding: 20px 16px; }
  .rows, .rows tbody, .rows tr, .rows td { display: block; width: 100%; }
  .rows thead { display: none; }
  .rows tr { border: 1px solid var(--line); border-radius: 8px; margin-bottom: 10px; padding: 8px 12px; }
  .rows td { border: 0; padding: 2px 0; white-space: normal; }
  .rows td:first-child { font-weight: 600; }
  .rows td[data-label]::before { content: attr(data-label) "："; color: var(--sub); }
}

.mail-btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  margin: 4px 0 12px;
  overflow-wrap: anywhere;
}

/* フッター */
.site-footer {
  background: var(--card);
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--sub);
}
.site-footer .wrap {
  padding-top: 20px;
  padding-bottom: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  align-items: center;
}
.site-footer p { margin: 0; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }

.card-foot { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.add {
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  padding: 7px 16px;
  color: #fff;
  background: var(--accent);
  border: 1px solid var(--accent);
}
.add:hover { opacity: .88; }
.add[aria-disabled="true"] { color: #8a94a3; background: #eef1f5; border-color: #eef1f5; pointer-events: none; }