/* ============================================================
   弓道幕府 - メインスタイルシート
   wa-modern design / 和モダンデザイン
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

/* ============================================================
   CSS カスタムプロパティ
   ============================================================ */
:root {
  /* Colors */
  --navy:        #0e1c2e;
  --navy-mid:    #1a2f48;
  --navy-light:  #2a4a6b;
  --crimson:     #8b1a1a;
  --crimson-mid: #a52a2a;
  --crimson-light: #c0392b;
  --gold:        #b8860b;
  --gold-light:  #d4a832;
  --gold-bright: #e8c96d;
  --cream:       #f7f5ef;
  --cream-dark:  #ede9e0;
  --cream-deeper:#ddd8cc;
  --text:        #1a1a1a;
  --text-mid:    #3a3a3a;
  --text-light:  #666666;
  --text-muted:  #999999;
  --white:       #ffffff;
  --border:      #d8d4c8;
  --border-light:#ebe8e0;

  /* Typography */
  --font-serif:  'Noto Serif JP', 'Yu Mincho', '游明朝', 'HiraMinProN-W3', serif;
  --font-sans:   'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;

  /* Spacing */
  --space-xs:    0.25rem;
  --space-sm:    0.5rem;
  --space-md:    1rem;
  --space-lg:    1.5rem;
  --space-xl:    2rem;
  --space-2xl:   3rem;
  --space-3xl:   4rem;
  --space-4xl:   6rem;

  /* Shadows */
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:   0 4px 20px rgba(0,0,0,0.10);
  --shadow-lg:   0 8px 40px rgba(0,0,0,0.14);
  --shadow-xl:   0 16px 60px rgba(0,0,0,0.18);

  /* Transitions */
  --transition:  0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --max-width:   1200px;
  --article-width: 800px;
  --header-height: 64px;
}

/* ============================================================
   リセット & ベース
   ============================================================ */
*, *::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-size: 1rem;
  line-height: 1.8;
  color: var(--text);
  background-color: var(--cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

a:hover {
  color: var(--crimson);
}

ul, ol {
  padding-left: 1.5em;
}

/* ============================================================
   タイポグラフィ
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--navy);
}

h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.4rem, 3vw, 1.875rem); }
h3 { font-size: clamp(1.15rem, 2.5vw, 1.375rem); }
h4 { font-size: 1.125rem; }

p {
  margin-bottom: 1.4em;
  letter-spacing: 0.02em;
}

p:last-child {
  margin-bottom: 0;
}

strong {
  font-weight: 700;
  color: var(--navy);
}

em {
  font-style: normal;
  color: var(--crimson);
  font-weight: 600;
}

/* ============================================================
   レイアウト
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container--narrow {
  max-width: var(--article-width);
}

.container--wide {
  max-width: 1400px;
}

/* ============================================================
   ヘッダー
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(14, 28, 46, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(184, 134, 11, 0.3);
  transition: background var(--transition);
}

.site-header.scrolled {
  background: rgba(14, 28, 46, 0.98);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
}

.logo-mark {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--crimson) 0%, var(--gold) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.logo-main {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--white);
  line-height: 1.2;
}

.logo-sub {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--gold-bright);
  text-transform: uppercase;
  line-height: 1;
}

.header-tagline {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.08em;
  font-family: var(--font-serif);
}

/* ============================================================
   ヒーローセクション（トップページ）
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--navy);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(139, 26, 26, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 50%, rgba(184, 134, 11, 0.08) 0%, transparent 60%),
    linear-gradient(135deg, #0e1c2e 0%, #1a2f48 40%, #0e1c2e 100%);
}

.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image:
    repeating-linear-gradient(
      45deg,
      rgba(255,255,255,0.5) 0px,
      rgba(255,255,255,0.5) 1px,
      transparent 1px,
      transparent 40px
    ),
    repeating-linear-gradient(
      -45deg,
      rgba(255,255,255,0.5) 0px,
      rgba(255,255,255,0.5) 1px,
      transparent 1px,
      transparent 40px
    );
}

.hero-kanji {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-serif);
  font-size: clamp(8rem, 20vw, 18rem);
  font-weight: 700;
  color: rgba(255,255,255,0.04);
  writing-mode: vertical-rl;
  letter-spacing: 0.1em;
  user-select: none;
  pointer-events: none;
  line-height: 1;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  padding: 0.35em 1em;
  background: rgba(184, 134, 11, 0.15);
  border: 1px solid rgba(184, 134, 11, 0.4);
  border-radius: 2px;
}

.hero-eyebrow span {
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--gold-bright);
  font-family: var(--font-serif);
  font-weight: 500;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.06em;
  color: var(--white);
  margin-bottom: var(--space-xl);
}

.hero-title .accent {
  color: var(--gold-bright);
  display: block;
  font-size: 0.65em;
  letter-spacing: 0.15em;
  margin-bottom: var(--space-sm);
  font-weight: 400;
}

.hero-title .main-phrase {
  display: block;
}

.hero-desc {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  line-height: 2;
  color: rgba(255,255,255,0.75);
  margin-bottom: var(--space-2xl);
  max-width: 560px;
  letter-spacing: 0.03em;
}

.hero-cta-group {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: rgba(255,255,255,0.4);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  animation: fadeInUp 2s ease 1s both;
}

.scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================================
   ボタン
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.85em 1.8em;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  border-radius: 2px;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--crimson) 0%, #6b1111 100%);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(139, 26, 26, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--crimson-mid) 0%, var(--crimson) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(139, 26, 26, 0.45);
  color: var(--white);
}

.btn-gold {
  background: linear-gradient(135deg, var(--gold) 0%, #8a6508 100%);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(184, 134, 11, 0.35);
}

.btn-gold:hover {
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(184, 134, 11, 0.45);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: rgba(255,255,255,0.85);
  border: 1px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.6);
  color: var(--white);
}

.btn-large {
  padding: 1em 2.4em;
  font-size: 1.1rem;
}

/* ============================================================
   セクション共通
   ============================================================ */
.section {
  padding: var(--space-4xl) 0;
}

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

.section--cream {
  background: var(--cream);
}

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

.section--alt {
  background: var(--cream-dark);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-family: var(--font-serif);
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  position: relative;
}

.section-eyebrow::before,
.section-eyebrow::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 30px;
  height: 1px;
  background: var(--gold);
  opacity: 0.6;
}

.section-eyebrow::before { right: calc(100% + 10px); }
.section-eyebrow::after  { left:  calc(100% + 10px); }

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--navy);
  margin-bottom: var(--space-md);
}

.section--dark .section-title {
  color: var(--white);
}

.section-desc {
  max-width: 560px;
  margin: 0 auto;
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.9;
}

.section--dark .section-desc {
  color: rgba(255,255,255,0.65);
}

/* ============================================================
   デコレーター（日本風装飾要素）
   ============================================================ */
.divider-wa {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin: var(--space-2xl) 0;
}

.divider-wa::before,
.divider-wa::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.divider-wa-mark {
  width: 8px;
  height: 8px;
  border: 1px solid var(--gold);
  transform: rotate(45deg);
  flex-shrink: 0;
}

/* ============================================================
   記事カード（トップページ）
   ============================================================ */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.article-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  overflow: hidden;
  transition: all var(--transition);
  position: relative;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(139, 26, 26, 0.2);
}

.article-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--crimson), var(--gold));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
}

.article-card:hover::before {
  transform: scaleY(1);
}

.card-thumb {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--navy-mid) 0%, var(--navy) 100%);
  position: relative;
  overflow: hidden;
}

.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.article-card:hover .card-thumb img {
  transform: scale(1.05);
}

.card-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 3rem;
  color: rgba(255,255,255,0.08);
  font-weight: 700;
  letter-spacing: 0.1em;
}

.card-category {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  padding: 0.2em 0.7em;
  background: rgba(14, 28, 46, 0.85);
  backdrop-filter: blur(4px);
  color: var(--gold-bright);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  font-family: var(--font-sans);
  font-weight: 500;
  border: 1px solid rgba(184, 134, 11, 0.3);
  border-radius: 1px;
}

.card-body {
  padding: var(--space-lg);
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--navy);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.02em;
}

.article-card:hover .card-title {
  color: var(--crimson);
}

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.card-meta-item {
  display: flex;
  align-items: center;
  gap: 0.3em;
}

.coming-soon {
  opacity: 0.5;
  pointer-events: none;
}

.coming-soon .card-category {
  background: rgba(0,0,0,0.6);
  color: rgba(255,255,255,0.4);
  border-color: rgba(255,255,255,0.1);
}

.coming-soon-badge {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0,0,0,0.7);
  color: rgba(255,255,255,0.6);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  padding: 0.4em 1em;
  border: 1px solid rgba(255,255,255,0.2);
  white-space: nowrap;
}

/* カテゴリフィルター */
.category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
}

.filter-btn {
  padding: 0.4em 1em;
  background: var(--white);
  border: 1px solid var(--border);
  color: var(--text-light);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  font-family: var(--font-serif);
  cursor: pointer;
  transition: all var(--transition);
  border-radius: 2px;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
}

/* ============================================================
   商材フィーチャーセクション
   ============================================================ */
.product-feature {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  position: relative;
  overflow: hidden;
}

.product-feature::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 0% 100%, rgba(139, 26, 26, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 100% 0%, rgba(184, 134, 11, 0.12) 0%, transparent 50%);
}

.product-feature-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.product-info {
  color: var(--white);
}

.product-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.4em 1.2em;
  border: 1px solid rgba(184, 134, 11, 0.5);
  background: rgba(184, 134, 11, 0.1);
  margin-bottom: var(--space-lg);
  border-radius: 1px;
}

.product-badge span {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--gold-bright);
  font-family: var(--font-serif);
}

.product-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: var(--space-lg);
  letter-spacing: 0.04em;
}

.product-subtitle {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.1em;
  font-family: var(--font-serif);
  margin-bottom: var(--space-xl);
}

.product-features-list {
  list-style: none;
  padding: 0;
  margin-bottom: var(--space-2xl);
  display: grid;
  gap: var(--space-sm);
}

.product-features-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.9rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.6;
}

.product-features-list li::before {
  content: '―';
  color: var(--gold);
  flex-shrink: 0;
  margin-top: 0.05em;
}

.product-visual {
  position: relative;
}

.product-box {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  padding: var(--space-2xl);
  text-align: center;
  backdrop-filter: blur(10px);
}

.product-price-block {
  margin-bottom: var(--space-xl);
}

.price-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-xs);
  font-family: var(--font-serif);
}

.price-amount {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--gold-bright);
  letter-spacing: 0.02em;
}

.price-sub {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
  margin-top: var(--space-xs);
  letter-spacing: 0.05em;
}

.product-guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: rgba(139, 26, 26, 0.2);
  border: 1px solid rgba(139, 26, 26, 0.3);
  border-radius: 2px;
  margin-top: var(--space-lg);
}

.product-guarantee span {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.05em;
  font-family: var(--font-serif);
}

/* ============================================================
   統計バー
   ============================================================ */
.stats-bar {
  background: var(--navy-mid);
  padding: var(--space-2xl) 0;
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.stat-num {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--gold-bright);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.12em;
  font-family: var(--font-serif);
}

/* ============================================================
   フッター
   ============================================================ */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,0.4);
  padding: var(--space-2xl) 0;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.08em;
}

.footer-copy {
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

.footer-disclaimer {
  font-size: 0.68rem;
  color: rgba(255,255,255,0.25);
  margin-top: var(--space-md);
  line-height: 1.7;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: var(--space-md);
  text-align: center;
}

/* ============================================================
   記事ページ専用スタイル
   ============================================================ */

/* 記事ヒーロー */
.article-hero {
  background: var(--navy);
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 70%, rgba(139, 26, 26, 0.15) 0%, transparent 55%),
    radial-gradient(ellipse at 70% 30%, rgba(184, 134, 11, 0.08) 0%, transparent 55%);
}

.article-hero-inner {
  position: relative;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
}

.breadcrumb a {
  color: rgba(255,255,255,0.4);
  text-decoration: none;
  transition: color var(--transition);
}

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

.breadcrumb-sep {
  font-size: 0.6rem;
  opacity: 0.4;
}

.article-category-tag {
  display: inline-block;
  padding: 0.25em 0.9em;
  background: rgba(139, 26, 26, 0.25);
  border: 1px solid rgba(139, 26, 26, 0.4);
  color: rgba(255,255,255,0.7);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  font-family: var(--font-serif);
  margin-bottom: var(--space-md);
  border-radius: 1px;
}

.article-title-main {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.4;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-lg);
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.05em;
}

/* 記事本文レイアウト */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-3xl);
  align-items: start;
  padding: var(--space-3xl) 0;
}

/* 記事本文 */
.article-body {
  min-width: 0;
}

.article-lead {
  font-size: 1.05rem;
  line-height: 2;
  color: var(--text-mid);
  border-left: 3px solid var(--crimson);
  padding-left: var(--space-lg);
  margin-bottom: var(--space-2xl);
  font-family: var(--font-serif);
}

/* 目次 */
.toc {
  background: var(--cream-dark);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.toc-title {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--navy);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.toc-title::before {
  content: '';
  width: 3px;
  height: 1em;
  background: var(--crimson);
  flex-shrink: 0;
}

.toc-list {
  list-style: none;
  padding: 0;
  counter-reset: toc-counter;
}

.toc-list > li {
  counter-increment: toc-counter;
  margin-bottom: var(--space-xs);
}

.toc-list > li > a {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  color: var(--text-mid);
  font-size: 0.85rem;
  line-height: 1.5;
  transition: color var(--transition);
}

.toc-list > li > a::before {
  content: counter(toc-counter);
  min-width: 1.5em;
  height: 1.5em;
  background: var(--navy);
  color: var(--white);
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.1em;
  border-radius: 1px;
}

.toc-list > li > a:hover {
  color: var(--crimson);
}

/* 見出しスタイル（記事内） */
.article-body h2 {
  font-size: clamp(1.3rem, 3vw, 1.6rem);
  margin: var(--space-3xl) 0 var(--space-lg);
  padding: var(--space-lg) var(--space-xl);
  background: var(--navy);
  color: var(--white);
  position: relative;
  letter-spacing: 0.04em;
}

.article-body h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(to bottom, var(--crimson), var(--gold));
}

.article-body h3 {
  font-size: clamp(1.1rem, 2.5vw, 1.3rem);
  margin: var(--space-2xl) 0 var(--space-md);
  padding-bottom: 0.5em;
  border-bottom: 2px solid var(--cream-deeper);
  color: var(--navy);
  position: relative;
}

.article-body h3::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--crimson);
}

.article-body h4 {
  font-size: 1.05rem;
  margin: var(--space-xl) 0 var(--space-sm);
  color: var(--navy);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.article-body h4::before {
  content: '◆';
  color: var(--gold);
  font-size: 0.75em;
}

/* 記事内テキスト */
.article-body p {
  font-size: 1rem;
  line-height: 2;
  color: var(--text);
  margin-bottom: 1.5em;
}

.article-body ul,
.article-body ol {
  margin: var(--space-lg) 0;
  padding-left: 1.8em;
}

.article-body li {
  margin-bottom: 0.6em;
  line-height: 1.8;
}

.article-body ul li::marker {
  color: var(--crimson);
}

/* ハイライトボックス */
.highlight-box {
  background: linear-gradient(135deg, rgba(14, 28, 46, 0.04), rgba(14, 28, 46, 0.08));
  border: 1px solid rgba(14, 28, 46, 0.12);
  border-left: 4px solid var(--navy);
  padding: var(--space-xl);
  margin: var(--space-2xl) 0;
  border-radius: 0 4px 4px 0;
}

.highlight-box.red {
  background: linear-gradient(135deg, rgba(139, 26, 26, 0.04), rgba(139, 26, 26, 0.08));
  border-color: rgba(139, 26, 26, 0.15);
  border-left-color: var(--crimson);
}

.highlight-box.gold {
  background: linear-gradient(135deg, rgba(184, 134, 11, 0.05), rgba(184, 134, 11, 0.1));
  border-color: rgba(184, 134, 11, 0.2);
  border-left-color: var(--gold);
}

.highlight-box-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
  color: var(--navy);
  letter-spacing: 0.06em;
}

/* 引用ブロック */
.article-body blockquote {
  margin: var(--space-2xl) 0;
  padding: var(--space-xl) var(--space-2xl);
  background: var(--cream-dark);
  border-left: 4px solid var(--gold);
  position: relative;
}

.article-body blockquote::before {
  content: '"';
  position: absolute;
  top: -0.5em;
  left: var(--space-lg);
  font-size: 4rem;
  color: rgba(184, 134, 11, 0.2);
  font-family: Georgia, serif;
  line-height: 1;
}

.article-body blockquote p {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-style: italic;
  color: var(--text-mid);
}

/* テーブル */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-2xl) 0;
  font-size: 0.9rem;
}

.article-body th {
  background: var(--navy);
  color: var(--white);
  padding: 0.75em 1em;
  text-align: left;
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid var(--navy-light);
}

.article-body td {
  padding: 0.7em 1em;
  border: 1px solid var(--border);
  line-height: 1.7;
  vertical-align: top;
}

.article-body tr:nth-child(even) td {
  background: var(--cream-dark);
}

/* アフィリエイトCTAボックス */
.affiliate-cta {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  border-radius: 6px;
  padding: var(--space-2xl) var(--space-2xl);
  margin: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.affiliate-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 0% 0%, rgba(139, 26, 26, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 100% 100%, rgba(184, 134, 11, 0.12) 0%, transparent 50%);
}

.affiliate-cta-inner {
  position: relative;
}

.affiliate-cta-badge {
  display: inline-block;
  padding: 0.25em 0.8em;
  background: rgba(184, 134, 11, 0.2);
  border: 1px solid rgba(184, 134, 11, 0.4);
  color: var(--gold-bright);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  font-family: var(--font-serif);
  margin-bottom: var(--space-md);
}

.affiliate-cta-title {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2.8vw, 1.75rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.4;
  margin-bottom: var(--space-md);
  letter-spacing: 0.04em;
}

.affiliate-cta-desc {
  color: rgba(255,255,255,0.7);
  font-size: 0.92rem;
  line-height: 1.9;
  margin-bottom: var(--space-xl);
}

.affiliate-cta-features {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm) var(--space-xl);
  margin-bottom: var(--space-xl);
}

.affiliate-cta-features li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.75);
}

.affiliate-cta-features li::before {
  content: '✓';
  color: var(--gold-bright);
  font-weight: 700;
  font-size: 0.9em;
}

.affiliate-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 1em 2.5em;
  background: linear-gradient(135deg, var(--crimson) 0%, #6b1111 100%);
  color: var(--white);
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: 2px;
  box-shadow: 0 6px 20px rgba(139, 26, 26, 0.4);
  transition: all var(--transition);
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.affiliate-cta-btn:hover {
  background: linear-gradient(135deg, var(--crimson-mid) 0%, var(--crimson) 100%);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(139, 26, 26, 0.5);
  color: var(--white);
}

/* article-body内の強いセレクタをCTA内でリセット */
.affiliate-cta h2,
.affiliate-cta h3,
.affiliate-cta h4 {
  color: var(--white);
  background: transparent;
  border-bottom: none;
  padding: 0;
  margin: 0;
}

.affiliate-cta h2::before,
.affiliate-cta h3::after,
.affiliate-cta h4::before {
  display: none;
}

.affiliate-cta p {
  color: rgba(255,255,255,0.7);
}

.affiliate-cta .affiliate-cta-guarantee {
  color: rgba(255,255,255,0.4);
}

.affiliate-cta li {
  color: rgba(255,255,255,0.75);
}

.affiliate-cta-guarantee {
  margin-top: var(--space-md);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.05em;
  font-family: var(--font-serif);
}

/* サイドバー */
.article-sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-xl));
}

.sidebar-block {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: var(--space-xl);
}

.sidebar-block-header {
  background: var(--navy);
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-serif);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.12em;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sidebar-block-header::before {
  content: '';
  width: 3px;
  height: 1em;
  background: var(--gold);
  flex-shrink: 0;
}

.sidebar-block-body {
  padding: var(--space-lg);
}

.sidebar-cta {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  padding: var(--space-xl);
  text-align: center;
}

.sidebar-cta-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.sidebar-cta-sub {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.sidebar-cta-btn {
  display: block;
  padding: 0.8em 1em;
  background: var(--crimson);
  color: var(--white);
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-align: center;
  border-radius: 2px;
  text-decoration: none;
  transition: all var(--transition);
}

.sidebar-cta-btn:hover {
  background: var(--crimson-mid);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(139, 26, 26, 0.35);
}

/* プログレスバー */
.reading-progress {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(255,255,255,0.1);
  z-index: 999;
}

.reading-progress-bar {
  height: 100%;
  background: linear-gradient(to right, var(--crimson), var(--gold));
  width: 0%;
  transition: width 0.1s linear;
}

/* ============================================================
   アバウトセクション（トップ）
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.about-visual {
  position: relative;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual-text {
  font-family: var(--font-serif);
  font-size: 5rem;
  font-weight: 700;
  color: rgba(255,255,255,0.06);
  writing-mode: vertical-rl;
  letter-spacing: 0.15em;
}

.about-visual-inner {
  position: absolute;
  bottom: var(--space-xl);
  left: var(--space-xl);
  right: var(--space-xl);
  background: rgba(14,28,46,0.85);
  backdrop-filter: blur(8px);
  padding: var(--space-lg);
  border-left: 3px solid var(--gold);
}

.about-visual-quote {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: rgba(255,255,255,0.9);
  line-height: 1.7;
  letter-spacing: 0.04em;
}

.about-text-content .section-eyebrow {
  margin-bottom: var(--space-md);
}

.about-title {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: var(--space-lg);
  line-height: 1.4;
  letter-spacing: 0.04em;
}

.about-desc {
  color: var(--text-light);
  line-height: 2;
  font-size: 0.95rem;
  margin-bottom: var(--space-xl);
}

.about-points {
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--space-md);
}

.about-point {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.about-point-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--crimson), #6b1111);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.75rem;
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--white);
}

.about-point-text {
  font-size: 0.92rem;
  color: var(--text-mid);
  line-height: 1.7;
  padding-top: 0.5em;
}

/* ============================================================
   アニメーション
   ============================================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.fade-in-up {
  animation: fadeInUp 0.7s ease both;
}

.fade-in-up-delay-1 { animation-delay: 0.1s; }
.fade-in-up-delay-2 { animation-delay: 0.2s; }
.fade-in-up-delay-3 { animation-delay: 0.3s; }

/* スクロールトリガーアニメーション */
.scroll-reveal {
  opacity: 0;
  transform: translateY(25px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   ユーティリティ
   ============================================================ */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.mt-sm  { margin-top: var(--space-sm); }
.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }
.mt-xl  { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mb-md  { margin-bottom: var(--space-md); }
.mb-xl  { margin-bottom: var(--space-xl); }

/* ============================================================
   レスポンシブデザイン
   ============================================================ */
@media (max-width: 1024px) {
  .product-feature-inner {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
}

@media (max-width: 768px) {
  :root {
    --space-4xl: 3.5rem;
    --space-3xl: 2.5rem;
  }

  .container {
    padding: 0 var(--space-lg);
  }

  .hero {
    min-height: 90vh;
  }

  .hero-kanji {
    font-size: 6rem;
    opacity: 0.03;
  }

  .stats-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }

  .affiliate-cta-features {
    grid-template-columns: 1fr;
  }

  .header-tagline {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-cta-group {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .category-filter {
    gap: var(--space-xs);
  }

  .filter-btn {
    font-size: 0.72rem;
    padding: 0.35em 0.8em;
  }
}

/* ============================================================
   印刷スタイル
   ============================================================ */
@media print {
  .site-header,
  .article-sidebar,
  .affiliate-cta,
  .reading-progress,
  .hero-scroll {
    display: none !important;
  }

  .article-layout {
    display: block;
  }

  body {
    background: white;
    color: black;
  }
}