:root {
  --color-bg:       #fafafa;
  --color-text:     #1a1a1a;
  --color-primary:  #e65100;
  --color-muted:    #666;
  --color-border:   #ddd;
  --color-down-bg:  #e8f5e9;
  --color-up-bg:    #fff3e0;
  --color-new-bg:   #e3f2fd;
  --color-surface:  #fafafa;
  --font:           'Hiragino Sans', 'Meiryo', sans-serif;
  --radius:         6px;

  --color-brand:       #1a3c5e;
  --color-brand-light: #1e4d7a;
  --color-gold:   #c9971f;
  --color-silver: #8b96a3;
  --color-bronze: #a9673a;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 15px;
}

.container { max-width: 960px; margin: 0 auto; padding: 0 16px; }

/* ヘッダー */
header {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
}
header .container { display: flex; align-items: center; gap: 24px; }
.site-title { font-weight: bold; font-size: 1.1rem; color: var(--color-brand); text-decoration: none; }
nav a { color: var(--color-muted); text-decoration: none; font-size: 0.9rem; margin-left: 16px; }
nav a:hover { color: var(--color-brand); }

main { padding: 32px 16px 64px; }

/* フッター */
footer { border-top: 1px solid var(--color-border); padding: 24px 0; }
footer p { font-size: 0.8rem; color: var(--color-muted); }

/* 見出し */
h1 { font-size: 1.5rem; line-height: 1.4; margin-bottom: 8px; }
h2 { font-size: 1.15rem; margin: 32px 0 12px; padding-bottom: 6px; border-bottom: 2px solid var(--color-brand); }
h3 { font-size: 1rem; margin: 24px 0 8px; }

/* kicker（記事の年月ラベル） */
.article-kicker {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: bold;
  color: var(--color-brand);
  background: #eef2f7;
  padding: 3px 10px;
  border-radius: 10px;
  margin-bottom: 8px;
}

/* ランクバッジ（1位=金・2位=銀・3位=銅） */
.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: bold;
  color: #fff;
  flex-shrink: 0;
}
.rank-badge.rank-1 { background: var(--color-gold); }
.rank-badge.rank-2 { background: var(--color-silver); }
.rank-badge.rank-3 { background: var(--color-bronze); }

/* 比較テーブル */
.table-wrapper { overflow-x: auto; margin: 24px 0; }

.surveyed-at {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.formula-box {
  background: #f5f5f5;
  border-left: 4px solid #607d8b;
  padding: 10px 14px;
  font-size: 0.85rem;
  margin-bottom: 12px;
  border-radius: 0 var(--radius) var(--radius) 0;
}

table.comparison {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  white-space: nowrap;
}
table.comparison th {
  background: var(--color-brand);
  color: #fff;
  padding: 8px 10px;
  text-align: left;
  font-weight: normal;
}
table.comparison td { padding: 8px 10px; border-bottom: 1px solid var(--color-border); }
table.comparison tr:hover td { background: #f9f9f9; }

/* 差分行の色 */
table.comparison tr.down td { background: var(--color-down-bg); }
table.comparison tr.up   td { background: var(--color-up-bg); }
table.comparison tr.new  td { background: var(--color-new-bg); }

.highlight-col { font-weight: bold; }
.highlight-col strong { color: var(--color-primary); }
.highlight-col strong.negative { color: #2e7d32; }

.diff-badge { margin-left: 4px; }
.diff-note  { display: block; font-size: 0.75rem; color: var(--color-muted); }

.line-type {
  font-size: 0.75rem;
  padding: 2px 6px;
  border-radius: 10px;
  font-weight: bold;
}
.line-type.ntt { background: #e3f2fd; color: #1565c0; }
.line-type.own { background: #fce4ec; color: #b71c1c; }

.apply-btn {
  display: inline-block;
  padding: 4px 12px;
  background: transparent;
  color: var(--color-brand);
  border: 1px solid var(--color-brand);
  text-decoration: none;
  border-radius: var(--radius);
  font-size: 0.8rem;
}
.apply-btn:hover { background: var(--color-brand); color: #fff; }

.disclaimer {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-top: 12px;
  line-height: 1.8;
}

/* 変更点サマリー */
.diff-summary {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 20px 0;
}
.diff-summary ul { padding-left: 1.2em; }
.diff-summary li { margin: 4px 0; font-size: 0.9rem; }

/* 月次ナビ */
.monthly-nav {
  display: flex;
  gap: 16px;
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
}
.monthly-nav a { color: var(--color-primary); }

/* ホームページのバックナンバー一覧（旧: style="margin-top: 40px;" のインライン指定をクラス化） */
.backnumber-list { margin-top: 40px; }

/* パンくずリスト */
.breadcrumb {
  background: #f5f5f5;
  border-bottom: 1px solid var(--color-border);
  padding: 8px 0;
  font-size: 0.82rem;
  color: var(--color-muted);
}
.breadcrumb a { color: var(--color-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-primary); }

/* ComparisonTable: CB申請ガイド・実質月額の計算方法（折りたたみ）
   注: これらは元々ComparisonTable.astroのscoped <style> にあったが、
   同じ記事コンテンツがindex.astroと[slug].astroの2ページから描画される際、
   Astroのビルドがどちらか一方のページにしかCSSチャンクをリンクしない問題が
   発覚したため、常に読み込まれるglobal.cssに移設した。 */
.cb-guide {
  margin-top: 16px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  overflow: hidden;
}
.cb-guide summary {
  padding: 10px 16px;
  background: #f5f5f5;
  cursor: pointer;
  font-size: .88rem;
  font-weight: bold;
  list-style: none;
  user-select: none;
}
.cb-guide summary::-webkit-details-marker { display: none; }
.cb-guide[open] summary { border-bottom: 1px solid var(--color-border); }
.cb-guide-body {
  padding: 16px 20px;
  font-size: .85rem;
  line-height: 1.8;
}
.cb-guide-body ol { padding-left: 1.4em; margin: 12px 0; }
.cb-guide-body li { margin-bottom: 10px; }
.cb-guide-note {
  background: #fff8e1;
  border-left: 3px solid #fbc02d;
  padding: 8px 12px;
  border-radius: 0 4px 4px 0;
  margin-top: 12px;
}

.formula-details {
  margin: 12px 0;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  overflow: hidden;
}
.formula-details summary {
  padding: 8px 14px;
  background: #f5f5f5;
  cursor: pointer;
  font-size: .85rem;
  font-weight: bold;
  list-style: none;
  user-select: none;
}
.formula-details summary::-webkit-details-marker { display: none; }
.formula-details[open] summary { border-bottom: 1px solid var(--color-border); }

td .rank-badge { margin-right: 4px; }

/* TopPicks: ベスト3表彰台（同じ理由でglobal.cssに移設） */
.top-picks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 20px 0;
}
@media (max-width: 700px) {
  .top-picks { grid-template-columns: 1fr; }
}

.pick-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.pick-card.pick-featured {
  border: 2px solid var(--color-gold);
  background: linear-gradient(180deg, #fffdf5 0%, #fff 100%);
  transform: scale(1.04);
}
@media (max-width: 700px) {
  .pick-card.pick-featured { transform: none; }
}

.pick-header {
  display: flex;
  align-items: center;
  gap: 6px;
}
.pick-rank-label {
  font-size: 0.78rem;
  color: var(--color-muted);
  font-weight: bold;
}

.pick-name { font-size: 0.92rem; font-weight: bold; }

.pick-price { font-size: 0.85rem; }
.pick-price strong {
  display: block;
  font-size: 1.6rem;
  color: var(--color-primary);
}
.pick-price strong.negative { color: #2e7d32; }

.pick-tag {
  font-size: 0.75rem;
  background: #eef2f7;
  color: var(--color-brand);
  padding: 2px 10px;
  border-radius: 10px;
}

.pick-btn {
  display: block;
  width: 100%;
  padding: 10px;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
  font-size: 0.85rem;
  margin-top: 4px;
  transition: opacity 0.15s;
}
.pick-btn:hover { opacity: 0.88; }

/* LossFramingBar（同じ理由でglobal.cssに移設） */
.loss-bar-block {
  background: #fff8f0;
  border: 1px solid #ffcc80;
  border-left: 4px solid #e65100;
  border-radius: 8px;
  padding: 18px 20px;
  margin: 20px 0;
}

.loss-bar-heading {
  font-size: 1rem;
  margin-bottom: 4px;
}
.loss-bar-heading strong {
  font-size: 1.3rem;
  color: #e65100;
}

.loss-bar-sub {
  font-size: 0.83rem;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.loss-bars {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 14px;
}

.loss-bar-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  align-items: center;
  gap: 10px;
}

@media (max-width: 500px) {
  .loss-bar-row { grid-template-columns: 1fr; }
}

.loss-bar-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
}

.bar-badge {
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 8px;
  font-weight: bold;
  flex-shrink: 0;
}
.bar-badge.best  { background: #e8f5e9; color: #2e7d32; }
.bar-badge.worst { background: #fce4ec; color: #b71c1c; }

.bar-service-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.loss-bar-track {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 20px;
}

.loss-bar-fill {
  height: 100%;
  background: #bdbdbd;
  border-radius: 3px;
  min-width: 4px;
  transition: width 0.6s ease;
}
.fill-best  { background: #43a047; }
.fill-worst { background: #e53935; }

.loss-bar-value {
  font-size: 0.82rem;
  color: var(--color-text);
  white-space: nowrap;
}

.loss-bar-cta-note {
  font-size: 0.83rem;
  color: var(--color-muted);
  margin: 0;
}
.loss-bar-link {
  color: var(--color-primary);
  font-weight: bold;
}

/* AnchorEffect（同じ理由でglobal.cssに移設） */
.anchor-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 20px;
  margin: 16px 0;
  text-align: center;
}

.anchor-service {
  font-size: 0.82rem;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.anchor-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.anchor-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.anchor-col-label {
  font-size: 0.75rem;
  color: var(--color-muted);
  background: #f0f0f0;
  padding: 2px 10px;
  border-radius: 10px;
}
.anchor-col.with .anchor-col-label {
  background: #e8f5e9;
  color: #2e7d32;
}

.anchor-price-through {
  font-size: 1.5rem;
  text-decoration: line-through;
  color: #bbb;
}
.anchor-monthly-through {
  font-size: 0.75rem;
  color: #ccc;
}

.anchor-arrow {
  font-size: 1.5rem;
  color: var(--color-muted);
}

.anchor-price-real {
  font-size: 2rem;
  font-weight: bold;
  color: var(--color-primary);
}
.anchor-price-real.negative { color: #2e7d32; }
.anchor-monthly-real {
  font-size: 0.78rem;
  color: var(--color-muted);
}

.anchor-saving {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #e8f5e9;
  border-radius: 20px;
  padding: 6px 16px;
  margin-bottom: 16px;
}
.anchor-saving-label { font-size: 0.78rem; color: #2e7d32; }
.anchor-saving-amount {
  font-size: 1.1rem;
  font-weight: bold;
  color: #2e7d32;
}
.anchor-saving-note { font-size: 0.72rem; color: #555; }

.anchor-btn {
  display: inline-block;
  padding: 12px 28px;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
  font-size: 0.92rem;
  transition: opacity 0.15s;
}
.anchor-btn:hover { opacity: 0.88; }

/* ── 横断比較（CrossTierNote） ────────────────────────────── */
.cross-tier {
  margin: 32px 0;
  padding: 16px 20px;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: 6px;
  background: var(--color-surface, #fafafa);
}
.cross-tier h2 { font-size: 1.05rem; margin: 0 0 8px; }
.cross-tier-verdict { font-weight: bold; margin: 0 0 12px; }
.cross-tier-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.cross-tier-table th, .cross-tier-table td { padding: 6px 8px; border-bottom: 1px solid var(--color-border); text-align: left; }
.cross-tier-under td { font-weight: bold; }
.cross-tier-link { margin: 12px 0 0; font-size: 0.9rem; }

/* ── トップの「10Gが不要なら」導線 ──────────────────────── */
.tier-cross-link {
  margin: 40px 0 0;
  padding: 16px 20px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
}
.tier-cross-link h2 { font-size: 1.05rem; margin: 0 0 8px; }
.tier-cross-title { font-weight: bold; margin: 0 0 4px; }
.tier-cross-desc { color: var(--color-muted); font-size: 0.9rem; margin: 0 0 8px; }
.archive-section { margin-top: 24px; }