/* =============================================
   ハーモニカ革命 メインスタイルシート
   Design: Fresh White / Pastel Teal
   ============================================= */

/* ── CSS Variables ── */
:root {
  --primary:       #2BADA0;
  --primary-light: #4DC5B8;
  --primary-dark:  #1D867B;
  --primary-bg:    #EAF6F5;
  --secondary:     #F07050;
  --secondary-light: #F49078;
  --gold:          #E8B84B;
  --gold-light:    #F5D07A;

  --bg:            #FAFAFA;
  --bg-card:       #FFFFFF;
  --bg-light:      #F4F9F8;
  --bg-section:    #EEF7F6;

  --text:          #1E2A28;
  --text-sub:      #5A6E6B;
  --text-light:    #8FA5A2;
  --text-inv:      #FFFFFF;

  --border:        #DDE9E8;
  --border-light:  #EEF3F3;

  --shadow-sm:     0 2px 8px rgba(43,173,160,0.08);
  --shadow:        0 4px 20px rgba(43,173,160,0.10);
  --shadow-lg:     0 8px 40px rgba(43,173,160,0.14);
  --shadow-hover:  0 12px 48px rgba(43,173,160,0.18);

  --radius-sm:     8px;
  --radius:        14px;
  --radius-lg:     22px;
  --radius-xl:     32px;

  --transition:    0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.45s cubic-bezier(0.4, 0, 0.2, 1);

  --font-sans:    'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
  --font-serif:   'Noto Serif JP', 'Hiragino Mincho ProN', Georgia, serif;
  --font-en:      'Cormorant Garamond', Georgia, serif;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
ul { list-style: none; }

/* ── Typography ── */
h1, h2, h3, h4, h5 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
  letter-spacing: -0.01em;
}

/* ── Container ── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.container--narrow {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Section Spacing ── */
.section { padding: 80px 0; }
.section--sm { padding: 56px 0; }
.section--lg { padding: 100px 0; }
.section--bg { background: var(--bg-section); }
.section--white { background: var(--bg-card); }

/* ── Section Header ── */
.section-header {
  text-align: center;
  margin-bottom: 52px;
}
.section-header__label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-bg);
  padding: 5px 14px;
  border-radius: 30px;
  margin-bottom: 14px;
}
.section-header__title {
  font-size: clamp(22px, 3.5vw, 30px);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 12px;
}
.section-header__sub {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 520px;
  margin: 0 auto;
}

/* ── ヘッダー ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.site-logo__icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
  flex-shrink: 0;
  box-shadow: 0 3px 12px rgba(43,173,160,0.3);
}
.site-logo__text { line-height: 1.2; }
.site-logo__name {
  font-size: 17px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.site-logo__tagline {
  font-size: 10px;
  color: var(--text-sub);
  letter-spacing: 0.05em;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--secondary), #E85C3A);
  color: white;
  font-size: 13px;
  font-weight: 700;
  padding: 10px 20px;
  border-radius: 30px;
  box-shadow: 0 4px 14px rgba(240,112,80,0.32);
  transition: var(--transition);
  white-space: nowrap;
}
.header-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(240,112,80,0.40);
  color: white;
}

/* ── フッター ── */
.site-footer {
  background: var(--text);
  color: rgba(255,255,255,0.55);
  text-align: center;
  padding: 36px 24px;
  font-size: 13px;
  line-height: 1.7;
}
.site-footer a { color: rgba(255,255,255,0.65); }
.site-footer a:hover { color: rgba(255,255,255,0.90); }

/* ── ボタン ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 700;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  border: none;
  white-space: nowrap;
}
.btn--primary {
  background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
  color: white;
  padding: 14px 32px;
  font-size: 15px;
  box-shadow: 0 4px 18px rgba(43,173,160,0.30);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(43,173,160,0.38);
  color: white;
}
.btn--cta {
  background: linear-gradient(135deg, var(--secondary), #C8441E);
  color: white;
  padding: 18px 40px;
  font-size: 17px;
  box-shadow: 0 5px 22px rgba(240,112,80,0.36);
  letter-spacing: 0.04em;
}
.btn--cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 36px rgba(240,112,80,0.44);
  color: white;
}
.btn--outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
  padding: 12px 28px;
  font-size: 14px;
}
.btn--outline:hover {
  background: var(--primary);
  color: white;
}
.btn--lg {
  padding: 20px 48px;
  font-size: 18px;
}
.btn--block { width: 100%; }

/* ── 記事カード ── */
.article-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.article-card__img {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--primary-bg), var(--bg-section));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.article-card__img-icon {
  font-size: 48px;
  opacity: 0.4;
  position: relative;
  z-index: 1;
}
.article-card__img::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(43,173,160,0.12), rgba(45,134,123,0.06));
}
.article-card__body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card__cat {
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.article-card__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.55;
  margin-bottom: 10px;
  flex: 1;
}
.article-card__desc {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card__arrow {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  margin-top: 14px;
}

/* ── 記事グリッド ── */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}
.article-grid--4 {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

/* ── カテゴリバッジ ── */
.cat-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--primary-bg);
  color: var(--primary);
}
.cat-badge--review { background: #FEF0EC; color: var(--secondary); }
.cat-badge--beginner { background: #EEF6FF; color: #3B82F6; }
.cat-badge--technique { background: #F3F0FF; color: #7C3AED; }
.cat-badge--care { background: #FFF7E6; color: #D97706; }
.cat-badge--blues { background: #F0FDF4; color: #16A34A; }

/* ── 商材紹介ボックス ── */
.product-box {
  background: linear-gradient(135deg, #FFFBF0, #FFF5E0);
  border: 2px solid var(--gold-light);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  overflow: hidden;
}
.product-box::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, rgba(232,184,75,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.product-box__label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #B8860B;
  background: rgba(232,184,75,0.15);
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 18px;
}
.product-box__title {
  font-size: clamp(18px, 2.5vw, 22px);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.5;
}
.product-box__desc {
  font-size: 15px;
  color: var(--text-sub);
  margin-bottom: 28px;
  line-height: 1.8;
}
.product-box__specs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}
.product-box__spec {
  background: white;
  border: 1px solid var(--gold-light);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  color: var(--text);
}
.product-box__spec strong { color: #B8860B; }

/* ── 記事本文スタイル ── */
.article-content {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 24px;
}
.article-content h2 {
  font-size: clamp(20px, 3vw, 25px);
  font-weight: 800;
  color: var(--text);
  margin: 56px 0 18px;
  padding: 18px 22px;
  background: linear-gradient(135deg, var(--primary-bg), #F0FAF9);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  line-height: 1.45;
}
.article-content h3 {
  font-size: clamp(17px, 2.5vw, 20px);
  font-weight: 700;
  color: var(--text);
  margin: 40px 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
  position: relative;
}
.article-content h3::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background: var(--primary);
}
.article-content h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-dark);
  margin: 28px 0 10px;
}
.article-content p {
  font-size: 16px;
  line-height: 1.95;
  color: var(--text);
  margin-bottom: 20px;
}
.article-content ul, .article-content ol {
  margin: 16px 0 24px 0;
  padding-left: 0;
}
.article-content ul li {
  padding: 8px 0 8px 28px;
  position: relative;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  border-bottom: 1px solid var(--border-light);
}
.article-content ul li::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 18px;
  width: 7px;
  height: 7px;
  background: var(--primary);
  border-radius: 50%;
}
.article-content ol { counter-reset: item; }
.article-content ol li {
  padding: 8px 0 8px 38px;
  position: relative;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  border-bottom: 1px solid var(--border-light);
  counter-increment: item;
}
.article-content ol li::before {
  content: counter(item);
  position: absolute;
  left: 0;
  top: 8px;
  width: 26px;
  height: 26px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
}
.article-content strong { color: var(--primary-dark); font-weight: 700; }
.article-content em { color: var(--secondary); font-style: normal; font-weight: 700; }
.article-content div.amp-card ul li {
  padding: 8px 0 8px 28px;
  position: relative;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-inv);
  border-bottom: 1px solid var(--border-light);
}
.article-content div.cost-item ul li {
  padding: 8px 0 8px 28px;
  position: relative;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-inv);
  border-bottom: 1px solid var(--border-light);
}

/* ── コールアウトボックス ── */
.callout {
  border-radius: var(--radius);
  padding: 22px 26px;
  margin: 28px 0;
  position: relative;
  font-size: 15px;
  line-height: 1.8;
}
.callout--info {
  background: var(--primary-bg);
  border-left: 4px solid var(--primary);
  color: var(--primary-dark);
}
.callout--warn {
  background: #FFF8E6;
  border-left: 4px solid var(--gold);
  color: #8B6914;
}
.callout--caution {
  background: #FEF0EC;
  border-left: 4px solid var(--secondary);
  color: #9B3824;
}
.callout--success {
  background: #F0FDF4;
  border-left: 4px solid #22C55E;
  color: #15803D;
}
.callout__title {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

/* ── テーブル ── */
.table-wrap { overflow-x: auto; margin: 24px 0; border-radius: var(--radius); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; }
thead th {
  background: var(--primary);
  color: white;
  padding: 13px 16px;
  font-size: 14px;
  font-weight: 700;
  text-align: left;
  white-space: nowrap;
}
tbody td {
  padding: 12px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text);
  line-height: 1.6;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:nth-child(even) td { background: var(--bg-light); }

/* ── ヒーローセクション（記事用） ── */
.article-hero {
  background: linear-gradient(135deg, var(--primary-bg) 0%, #E0F4F2 50%, #F0FAF9 100%);
  padding: 60px 0 50px;
  border-bottom: 1px solid var(--border);
}
.article-hero__breadcrumb {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.article-hero__breadcrumb a { color: var(--text-sub); }
.article-hero__breadcrumb a:hover { color: var(--primary); }
.article-hero__cat {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--primary);
  background: white;
  border: 1.5px solid var(--primary);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.article-hero__title {
  font-size: clamp(22px, 4vw, 36px);
  font-weight: 900;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.article-hero__meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-sub);
}
.article-hero__meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* ── 目次 ── */
.toc {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
  margin: 36px 0;
}
.toc__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.toc ol {
  counter-reset: toc;
  padding-left: 0;
  margin: 0;
}
.toc ol li {
  counter-increment: toc;
  padding: 6px 0 6px 28px;
  position: relative;
  font-size: 14px;
  border-bottom: none;
}
.toc ol li::before {
  content: counter(toc);
  position: absolute;
  left: 0;
  top: 7px;
  width: 20px;
  height: 20px;
  background: var(--primary-bg);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
}
.toc ol li a { color: var(--text-sub); }
.toc ol li a:hover { color: var(--primary); }

/* ── プロフィールカード ── */
.profile-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin: 28px 0;
}
.profile-card__avatar {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}
.profile-card__info {}
.profile-card__name { font-size: 16px; font-weight: 700; margin-bottom: 3px; }
.profile-card__title { font-size: 12px; color: var(--text-sub); margin-bottom: 8px; }
.profile-card__bio { font-size: 14px; color: var(--text-sub); line-height: 1.7; }

/* ── レビュースター ── */
.star-rating {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 20px;
  color: var(--gold);
  letter-spacing: 2px;
}
.star-rating__score {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  margin-left: 8px;
  font-family: var(--font-sans);
}
.star-rating__total {
  font-size: 14px;
  color: var(--text-sub);
  margin-left: 2px;
}

/* ── メリット・デメリットボックス ── */
.merit-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 28px 0;
}
.merit-box__col {
  border-radius: var(--radius);
  padding: 22px;
}
.merit-box__col--good {
  background: #F0FDF4;
  border: 1.5px solid #86EFAC;
}
.merit-box__col--bad {
  background: #FEF2F2;
  border: 1.5px solid #FCA5A5;
}
.merit-box__title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 7px;
}
.merit-box__col--good .merit-box__title { color: #15803D; }
.merit-box__col--bad .merit-box__title { color: #DC2626; }
.merit-box__list { margin: 0; }
.merit-box__list li {
  font-size: 14px;
  padding: 6px 0 6px 22px;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  color: var(--text);
  position: relative;
}
.merit-box__list li::before {
  position: absolute;
  left: 0;
  top: 6px;
}
.merit-box__col--good .merit-box__list li::before { content: '✓'; color: #16A34A; font-weight: 700; }
.merit-box__col--bad .merit-box__list li::before { content: '✗'; color: #DC2626; font-weight: 700; }

/* ── 評価テーブル ── */
.eval-table { margin: 24px 0; }
.eval-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-light);
}
.eval-item__label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  width: 120px;
  flex-shrink: 0;
}
.eval-item__bar {
  flex: 1;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}
.eval-item__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-light), var(--primary));
  border-radius: 4px;
  transition: width 1s ease;
}
.eval-item__score {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  width: 36px;
  text-align: right;
}

/* ── CTAバナー ── */
.cta-banner {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
  margin: 40px 0;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.06) 0%, transparent 65%);
  pointer-events: none;
}
.cta-banner__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.88);
  margin-bottom: 12px;
}
.cta-banner__title {
  font-size: clamp(20px, 3.5vw, 28px);
  font-weight: 900;
  margin-bottom: 10px;
  text-shadow: 0 2px 6px rgba(0,0,0,0.30);
}
.cta-banner__sub {
  font-size: 15px;
  color: rgba(255,255,255,0.92);
  margin-bottom: 28px;
  line-height: 1.7;
}
.cta-banner__btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: white;
  color: #0D4A43;
  font-size: 16px;
  font-weight: 800;
  padding: 16px 40px;
  border-radius: 50px;
  box-shadow: 0 5px 24px rgba(0,0,0,0.2);
  transition: var(--transition);
  text-decoration: none;
}
.cta-banner__btn:hover {
  background: #F0FAF9;
  transform: translateY(-3px);
  box-shadow: 0 10px 36px rgba(0,0,0,0.28);
  color: #0D4A43;
}
.cta-banner__note {
  font-size: 12px;
  color: rgba(255,255,255,0.80);
  margin-top: 14px;
}

/* ── FAQアコーディオン ── */
.faq { margin: 28px 0; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  overflow: hidden;
  background: var(--bg-card);
}
.faq-item__q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  transition: background var(--transition);
  user-select: none;
}
.faq-item__q:hover { background: var(--bg-light); }
.faq-item__q-icon {
  width: 28px;
  height: 28px;
  background: var(--primary-bg);
  color: var(--primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  flex-shrink: 0;
}
.faq-item__q-text { flex: 1; }
.faq-item__toggle {
  font-size: 18px;
  color: var(--text-light);
  transition: transform var(--transition);
}
.faq-item.open .faq-item__toggle { transform: rotate(45deg); }
.faq-item__a {
  display: none;
  padding: 0 22px 18px 64px;
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
}
.faq-item.open .faq-item__a { display: block; }

/* ── スコアカード ── */
.score-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.score-card__value {
  font-size: 56px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.score-card__unit {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-sub);
  vertical-align: top;
  margin-top: 10px;
  display: inline-block;
}
.score-card__label {
  font-size: 13px;
  color: var(--text-sub);
  margin-top: 6px;
}

/* ── 注意書き・免責 ── */
.disclaimer {
  font-size: 12px;
  color: var(--text-light);
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 20px;
  margin-top: 40px;
}

/* ── パンくず ── */
.breadcrumb {
  font-size: 12.5px;
  color: var(--text-light);
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-sub); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb__sep { color: var(--border); }

/* ── ソーシャルシェアボタン ── */
.share-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 32px 0;
  padding: 22px;
  background: var(--bg-light);
  border-radius: var(--radius);
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  color: white;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.share-btn--x { background: #000; }
.share-btn--line { background: #00B900; }
.share-btn--copy { background: var(--text-sub); cursor: pointer; border: none; font-family: var(--font-sans); }
.share-btn:hover { opacity: 0.85; transform: translateY(-1px); color: white; }

/* ── スムーススクロール・アニメーション ── */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── モバイル対応 ── */
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section--lg { padding: 64px 0; }
  .article-grid { grid-template-columns: 1fr; }
  .article-grid--4 { grid-template-columns: 1fr 1fr; }
  .merit-box { grid-template-columns: 1fr; }
  .product-box { padding: 28px 22px; }
  .cta-banner { padding: 36px 24px; }
  .site-logo__tagline { display: none; }
  .article-hero { padding: 40px 0 36px; }
  .article-hero__title { font-size: 22px; }
  .article-content h2 { padding: 14px 16px; font-size: 19px; }
  .profile-card { flex-direction: column; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .article-content { padding: 0 16px; }
  .article-grid--4 { grid-template-columns: 1fr; }
  .header-cta { display: none; }
  .btn--cta { padding: 16px 30px; font-size: 16px; }
}