/* ==========================================
   バレーボール姫君 - メインスタイルシート
   ========================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700;900&family=Noto+Serif+JP:wght@400;700&display=swap');

/* --- CSS変数 --- */
:root {
  --color-primary: #4A90D9;
  --color-primary-light: #E8F2FC;
  --color-primary-dark: #2C6FAC;
  --color-accent: #FF7A59;
  --color-accent-light: #FFF0EB;
  --color-sub: #6DBF9E;
  --color-sub-light: #E8F8F1;
  --color-white: #FFFFFF;
  --color-bg: #F7FAFD;
  --color-bg-alt: #EEF5FB;
  --color-text: #2D3748;
  --color-text-light: #718096;
  --color-text-muted: #A0AEC0;
  --color-border: #E2EAF4;
  --color-shadow: rgba(74, 144, 217, 0.12);
  --font-main: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
  --font-serif: 'Noto Serif JP', 'Hiragino Mincho ProN', serif;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(74, 144, 217, 0.08);
  --shadow-md: 0 4px 20px rgba(74, 144, 217, 0.12);
  --shadow-lg: 0 8px 40px rgba(74, 144, 217, 0.18);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --content-width: 860px;
}

/* --- リセット・ベース --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
}

ul, ol {
  list-style: none;
}

/* ==========================================
   ヘッダー
   ========================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.site-logo .logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: var(--shadow-sm);
}

.site-logo .logo-text {
  display: flex;
  flex-direction: column;
}

.site-logo .logo-name {
  font-size: 18px;
  font-weight: 900;
  color: var(--color-primary-dark);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.site-logo .logo-sub {
  font-size: 10px;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
}

.header-search {
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: 50px;
  padding: 8px 18px;
  gap: 8px;
  transition: var(--transition);
  width: 260px;
}

.header-search:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.header-search input {
  border: none;
  background: transparent;
  font-family: var(--font-main);
  font-size: 14px;
  color: var(--color-text);
  width: 100%;
  outline: none;
}

.header-search input::placeholder {
  color: var(--color-text-muted);
}

.header-search svg {
  color: var(--color-text-muted);
  flex-shrink: 0;
}

/* ==========================================
   プログレスバー
   ========================================== */
.reading-progress {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-border);
  z-index: 999;
}

.reading-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  width: 0%;
  transition: width 0.1s linear;
}

/* ==========================================
   ヒーローセクション
   ========================================== */
.hero {
  padding: 120px 24px 80px;
  background: linear-gradient(135deg, #EBF4FF 0%, #FFFFFF 40%, #F0FBFF 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(74,144,217,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -80px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(109,191,158,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border: 1px solid rgba(74,144,217,0.2);
  border-radius: 50px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 900;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-title .highlight {
  color: var(--color-primary);
  position: relative;
}

.hero-title .highlight::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-light), var(--color-primary));
  border-radius: 2px;
  opacity: 0.4;
}

.hero-desc {
  font-size: 16px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 36px;
}

.hero-stats {
  display: flex;
  gap: 28px;
  margin-bottom: 40px;
}

.hero-stat {
  text-align: center;
}

.hero-stat .num {
  font-size: 28px;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  display: block;
}

.hero-stat .label {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.hero-stat-divider {
  width: 1px;
  background: var(--color-border);
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(74,144,217,0.35);
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(74,144,217,0.45);
  color: var(--color-white);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 700;
  transition: var(--transition);
  cursor: pointer;
}

.btn-secondary:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
}

.hero-visual {
  position: relative;
}

.hero-card-main {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.hero-card-main .card-tag {
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: 50px;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 700;
  display: inline-block;
  margin-bottom: 14px;
}

.hero-card-main h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.5;
}

.rating-stars {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 8px;
}

.star {
  color: #FFC107;
  font-size: 16px;
}

.rating-num {
  font-size: 22px;
  font-weight: 900;
  color: var(--color-text);
  margin-left: 4px;
}

.rating-count {
  font-size: 13px;
  color: var(--color-text-muted);
}

.feature-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.pill {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  padding: 4px 12px;
  font-size: 12px;
  color: var(--color-text-light);
}

.floating-badge {
  position: absolute;
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.floating-badge.badge-1 {
  top: -20px;
  right: -20px;
  animation: float1 4s ease-in-out infinite;
}

.floating-badge.badge-2 {
  bottom: -20px;
  left: -20px;
  animation: float2 5s ease-in-out infinite;
}

.floating-badge .badge-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.floating-badge .badge-icon.green {
  background: var(--color-sub-light);
}

.floating-badge .badge-icon.orange {
  background: var(--color-accent-light);
}

.floating-badge .badge-text .num {
  font-size: 18px;
  font-weight: 900;
  display: block;
  line-height: 1.2;
}

.floating-badge .badge-text .sub {
  font-size: 11px;
  color: var(--color-text-muted);
}

@keyframes float1 {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

@keyframes float2 {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(8px); }
}

/* ==========================================
   セクション共通
   ========================================== */
.section {
  padding: 80px 24px;
}

.section-alt {
  background: var(--color-white);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-label::before,
.section-label::after {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-primary);
  opacity: 0.5;
}

.section-title {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 900;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 16px;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ==========================================
   商材紹介バナー
   ========================================== */
.product-banner {
  background: linear-gradient(135deg, #1A3A6E 0%, #2C6FAC 50%, #4A90D9 100%);
  border-radius: var(--radius-lg);
  padding: 48px;
  margin: 0 24px 80px;
  max-width: calc(var(--max-width) - 48px);
  margin-left: auto;
  margin-right: auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.product-banner::before {
  content: '🏐';
  position: absolute;
  right: 200px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 180px;
  opacity: 0.06;
  pointer-events: none;
}

.product-banner .banner-tag {
  background: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.9);
  border-radius: 50px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 700;
  display: inline-block;
  margin-bottom: 12px;
  border: 1px solid rgba(255,255,255,0.2);
}

.product-banner h2 {
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: 12px;
  line-height: 1.4;
}

.product-banner p {
  font-size: 15px;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin-bottom: 24px;
}

.banner-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.banner-feature {
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.9);
  font-size: 13px;
  font-weight: 500;
}

.banner-feature::before {
  content: '✓';
  color: #7FFFD4;
  font-weight: 900;
}

.btn-banner {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-white);
  color: var(--color-primary-dark);
  border-radius: 50px;
  padding: 14px 30px;
  font-size: 15px;
  font-weight: 900;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  white-space: nowrap;
}

.btn-banner:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
  color: var(--color-primary-dark);
}

.banner-cta {
  text-align: center;
  flex-shrink: 0;
}

.banner-cta .price-label {
  color: rgba(255,255,255,0.7);
  font-size: 13px;
  margin-bottom: 8px;
}

.banner-cta .price {
  font-size: 28px;
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: 16px;
  line-height: 1.2;
}

.banner-cta .price span {
  font-size: 14px;
  font-weight: 400;
  opacity: 0.8;
}

/* ==========================================
   カテゴリフィルタ
   ========================================== */
.category-filter {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 48px;
}

.filter-btn {
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: 50px;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-light);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

/* ==========================================
   記事カード
   ========================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(74,144,217,0.2);
}

.card-thumb {
  height: 180px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-bg-alt));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 60px;
  position: relative;
  overflow: hidden;
}

.card-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(255,255,255,0.5));
}

.card-thumb.thumb-review { background: linear-gradient(135deg, #FFE8E0, #FFF0EB); }
.card-thumb.thumb-rules { background: linear-gradient(135deg, #E0EBF5, #EBF4FF); }
.card-thumb.thumb-school { background: linear-gradient(135deg, #E8F5F0, #F0FBF7); }
.card-thumb.thumb-tips { background: linear-gradient(135deg, #FFF8E0, #FFFAEB); }
.card-thumb.thumb-serve { background: linear-gradient(135deg, #F0E8F5, #F7F0FB); }
.card-thumb.thumb-practice { background: linear-gradient(135deg, #E0F5F5, #EBF9F9); }
.card-thumb.thumb-ball { background: linear-gradient(135deg, #E8EDF5, #EFF3FB); }
.card-thumb.thumb-tactics { background: linear-gradient(135deg, #F5EAE0, #FBF0EB); }

.card-category {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 1;
  background: rgba(255,255,255,0.9);
  border-radius: 50px;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary-dark);
  backdrop-filter: blur(4px);
}

.card-body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.card-date {
  font-size: 12px;
  color: var(--color-text-muted);
}

.card-read-time {
  font-size: 12px;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-text);
  margin-bottom: 10px;
  flex: 1;
}

.card-excerpt {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
}

.card-link .arrow {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.article-card:hover .card-link .arrow {
  background: var(--color-primary);
  color: var(--color-white);
}

/* おすすめバッジ */
.card-badge-recommend {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 1;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50px;
  padding: 3px 10px;
  font-size: 10px;
  font-weight: 700;
}

/* ==========================================
   特集セクション（大カード）
   ========================================== */
.featured-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 28px;
  margin-bottom: 28px;
}

.article-card-featured {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.article-card-featured:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.featured-thumb {
  height: 260px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-bg-alt));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
  position: relative;
}

.featured-thumb.thumb-review { background: linear-gradient(135deg, #FFE8E0, #FFF0EB); }

.featured-body {
  padding: 28px;
}

.featured-body .card-category {
  position: static;
  display: inline-block;
  margin-bottom: 12px;
}

.featured-body .card-title {
  font-size: 20px;
  margin-bottom: 12px;
}

/* ==========================================
   特徴セクション
   ========================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  text-align: center;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 34px;
  margin: 0 auto 20px;
}

.feature-icon.blue { background: var(--color-primary-light); }
.feature-icon.orange { background: var(--color-accent-light); }
.feature-icon.green { background: var(--color-sub-light); }

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ==========================================
   商材推薦ボックス（記事内）
   ========================================== */
.affiliate-box {
  background: linear-gradient(135deg, #EBF4FF 0%, #F0F7FF 100%);
  border: 2px solid rgba(74,144,217,0.25);
  border-radius: var(--radius-md);
  padding: 40px;
  margin: 48px 0;
  position: relative;
  overflow: hidden;
}

.affiliate-box::before {
  content: '🏐';
  position: absolute;
  right: 30px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 100px;
  opacity: 0.08;
  pointer-events: none;
}

.affiliate-box .affiliate-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50px;
  padding: 4px 14px;
  font-size: 11px;
  font-weight: 700;
  margin-bottom: 14px;
}

.affiliate-box h3 {
  font-size: 22px;
  font-weight: 900;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.4;
}

.affiliate-box p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 20px;
  line-height: 1.8;
}

.affiliate-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 28px;
}

.affiliate-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
}

.affiliate-feature .check {
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 11px;
  flex-shrink: 0;
}

.btn-affiliate {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--color-accent), #E8623E);
  color: var(--color-white);
  border-radius: 50px;
  padding: 16px 36px;
  font-size: 16px;
  font-weight: 900;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(255,122,89,0.35);
  text-decoration: none;
}

.btn-affiliate:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255,122,89,0.45);
  color: var(--color-white);
}

.affiliate-note {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 12px;
}

/* ==========================================
   FAQ セクション
   ========================================== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(74,144,217,0.3);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  gap: 16px;
}

.faq-q-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.faq-question h3 {
  font-size: 16px;
  font-weight: 700;
  flex: 1;
  line-height: 1.5;
}

.faq-toggle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
  font-size: 16px;
  color: var(--color-text-muted);
}

.faq-item.open .faq-toggle {
  background: var(--color-primary);
  color: var(--color-white);
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  padding-left: 68px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ==========================================
   フッター
   ========================================== */
.site-footer {
  background: #1A2A3E;
  color: rgba(255,255,255,0.7);
  padding: 60px 24px 30px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo-name {
  font-size: 20px;
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: 8px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--color-white);
}

.footer-bottom {
  text-align: center;
  font-size: 13px;
}

/* ==========================================
   記事ページ用スタイル
   ========================================== */
.article-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 100px 24px 80px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}

.article-main {
  min-width: 0;
}

/* パンくずリスト */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  font-size: 13px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb .sep {
  color: var(--color-text-muted);
}

.breadcrumb .current {
  color: var(--color-text-light);
}

/* 記事ヘッダー */
.article-header {
  margin-bottom: 40px;
}

.article-category-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.tag {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: 50px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 700;
}

.tag-accent {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.article-title {
  font-size: clamp(24px, 3.5vw, 38px);
  font-weight: 900;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-muted);
}

/* アイキャッチ */
.article-eyecatch {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 40px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-bg-alt));
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 100px;
}

/* 目次 */
.toc {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 48px;
}

.toc-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc ol {
  list-style: decimal;
  padding-left: 20px;
}

.toc ol li {
  margin-bottom: 8px;
}

.toc ol li a {
  font-size: 14px;
  color: var(--color-primary);
  line-height: 1.5;
}

.toc ol li a:hover {
  text-decoration: underline;
}

.toc ol li ol {
  margin-top: 6px;
}

.toc ol li ol li a {
  font-size: 13px;
  color: var(--color-text-light);
}

/* 記事本文 */
.article-content h2 {
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 900;
  color: var(--color-text);
  margin: 56px 0 20px;
  padding: 20px 24px;
  background: linear-gradient(135deg, var(--color-primary-light), rgba(235,244,255,0.3));
  border-left: 5px solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  line-height: 1.4;
  position: relative;
}

.article-content h3 {
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  color: var(--color-text);
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
  position: relative;
}

.article-content h3::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--color-primary);
}

.article-content h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin: 32px 0 12px;
}

.article-content p {
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-text);
  margin-bottom: 20px;
}

.article-content ul, .article-content ol {
  margin-bottom: 24px;
  padding-left: 8px;
}

.article-content ul li {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  padding: 6px 0 6px 28px;
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

.article-content ul li:last-child {
  border-bottom: none;
}

.article-content ul li::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

.article-content ol {
  list-style: none;
  counter-reset: ol-counter;
}

.article-content ol li {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  padding: 10px 0 10px 44px;
  position: relative;
  border-bottom: 1px solid var(--color-border);
  counter-increment: ol-counter;
}

.article-content ol li:last-child {
  border-bottom: none;
}

.article-content ol li::before {
  content: counter(ol-counter);
  position: absolute;
  left: 0;
  top: 10px;
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

.article-content strong {
  font-weight: 700;
  color: var(--color-text);
}

.article-content em {
  color: var(--color-primary-dark);
  font-style: normal;
  font-weight: 700;
}

/* インフォボックス */
.info-box {
  background: var(--color-primary-light);
  border: 1px solid rgba(74,144,217,0.25);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin: 28px 0;
}

.info-box.warning {
  background: #FFF8E0;
  border-color: rgba(255,193,7,0.3);
}

.info-box.check {
  background: var(--color-sub-light);
  border-color: rgba(109,191,158,0.3);
}

.info-box .info-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-box p {
  font-size: 15px;
  margin-bottom: 0;
}

/* 比較テーブル */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
}

.compare-table th {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 14px 18px;
  text-align: left;
  font-weight: 700;
}

.compare-table th:first-child {
  border-radius: var(--radius-sm) 0 0 0;
}

.compare-table th:last-child {
  border-radius: 0 var(--radius-sm) 0 0;
}

.compare-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  vertical-align: top;
}

.compare-table tr:nth-child(even) td {
  background: var(--color-bg);
}

.compare-table tr:hover td {
  background: var(--color-primary-light);
}

.compare-table .check-yes { color: var(--color-sub); font-weight: 700; }
.compare-table .check-no { color: #E53E3E; }

/* 評価ボックス */
.rating-box {
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  margin: 36px 0;
  text-align: center;
}

.rating-box h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  border-bottom: none;
  margin-top: 0;
}

.rating-box h3::after {
  display: none;
}

.rating-total {
  font-size: 56px;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.rating-label {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.rating-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
}

.rating-item {
  display: grid;
  grid-template-columns: 120px 1fr 40px;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}

.rating-item .item-label {
  color: var(--color-text-light);
}

.rating-bar {
  background: var(--color-border);
  border-radius: 50px;
  height: 8px;
  overflow: hidden;
}

.rating-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark));
  border-radius: 50px;
  transition: width 1s ease;
}

.rating-item .item-score {
  font-weight: 700;
  color: var(--color-primary);
  text-align: right;
}

/* SNS共有 */
.share-section {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 24px 0;
  margin: 48px 0;
}

.share-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--color-text-light);
}

.share-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 50px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 700;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.share-btn.twitter { background: #1DA1F2; color: white; }
.share-btn.facebook { background: #1877F2; color: white; }
.share-btn.line { background: #00B900; color: white; }
.share-btn.copy { background: var(--color-bg); color: var(--color-text); border: 1px solid var(--color-border); }

.share-btn:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

/* サイドバー */
.article-sidebar {
  position: sticky;
  top: 100px;
}

.sidebar-widget {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.widget-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.widget-toc ol {
  list-style: decimal;
  padding-left: 18px;
}

.widget-toc ol li {
  margin-bottom: 8px;
}

.widget-toc ol li a {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
}

.widget-toc ol li a:hover {
  color: var(--color-primary);
}

.sidebar-product {
  background: linear-gradient(135deg, #EBF4FF, #F0F7FF);
  border-color: rgba(74,144,217,0.2);
}

.sidebar-product .product-name {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}

.sidebar-product .product-price {
  font-size: 22px;
  font-weight: 900;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.sidebar-product .product-price-sub {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.sidebar-product .btn-affiliate-sm {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50px;
  padding: 12px;
  font-size: 14px;
  font-weight: 700;
  transition: var(--transition);
  text-decoration: none;
}

.sidebar-product .btn-affiliate-sm:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  color: var(--color-white);
}

/* ==========================================
   スクロールトップボタン
   ========================================== */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 999;
  border: none;
  font-size: 18px;
}

.scroll-top.visible {
  opacity: 1;
  pointer-events: all;
}

.scroll-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-3px);
}

/* ==========================================
   検索結果
   ========================================== */
.search-results {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 1001;
  max-height: 360px;
  overflow-y: auto;
}

.search-results.visible {
  display: block;
}

.search-result-item {
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  transition: var(--transition);
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover {
  background: var(--color-primary-light);
}

.search-result-item .result-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.search-result-item .result-cat {
  font-size: 12px;
  color: var(--color-primary);
}

.header-search-wrap {
  position: relative;
}

/* ==========================================
   スキルインジケーター
   ========================================== */
.skill-meter {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 24px 0;
}

.skill-meter h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  margin-top: 0;
}

.skill-rows {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.skill-row {
  display: grid;
  grid-template-columns: 130px 1fr 36px;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}

.skill-row .skill-name {
  color: var(--color-text-light);
}

.skill-bar {
  background: var(--color-border);
  border-radius: 50px;
  height: 8px;
}

.skill-bar-fill {
  height: 100%;
  border-radius: 50px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-sub));
}

/* ==========================================
   レスポンシブ
   ========================================== */
@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    display: none;
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .featured-grid {
    grid-template-columns: 1fr;
  }
  .product-banner {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    display: none;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .affiliate-features {
    grid-template-columns: 1fr;
  }
  .product-banner {
    padding: 32px 24px;
    margin: 0 0 48px;
  }
  .header-search {
    display: none;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-stats {
    gap: 16px;
  }
  .rating-item {
    grid-template-columns: 90px 1fr 36px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 100px 16px 60px;
  }
  .section {
    padding: 60px 16px;
  }
  .article-layout {
    padding: 90px 16px 60px;
  }
  .affiliate-box {
    padding: 28px 20px;
  }
}