@charset "UTF-8";

/*!
Theme Name: Cocoon Child
Description: Cocoon専用の子テーマ
Theme URI: https://wp-cocoon.com/
Author: わいひら
Author URI: https://nelog.jp/
Template:   cocoon-master
Version:    1.1.3
*/

/************************************
** 子テーマ用のスタイルを書く
************************************/
/*必要ならばここにコードを書く*/

/************************************
** レスポンシブデザイン用のメディアクエリ
************************************/

/* ============================================
   ギター初心者のための基礎知識 - 初めにセクション
   シックで貫禄のあるデザイン / 完全レスポンシブ対応
   ============================================ */

/* メインセクション */
.guitar-hajimeni-section-2025 {
  background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 100%);
  padding: 80px 20px;
  position: relative;
  overflow: hidden;
}

.guitar-hajimeni-section-2025::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #8B7355 0%, #6B5D54 50%, #8B7355 100%);
}

.hajimeni-container-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  padding: 60px;
}

/* ヘッダーブロック */
.hajimeni-header-block {
  margin-bottom: 60px;
  text-align: center;
  position: relative;
}

.hajimeni-main-title {
  font-size: 36px;
  font-weight: 700;
  color: #2c2c2c;
  margin-bottom: 30px;
  position: relative;
  display: inline-block;
  letter-spacing: 0.05em;
}

.hajimeni-main-title .title-accent {
  position: relative;
  padding-bottom: 10px;
}

.hajimeni-main-title .title-accent::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: #8B7355;
}

.hajimeni-intro-text,
.hajimeni-experience-text {
  font-size: 16px;
  line-height: 1.8;
  color: #4a4a4a;
  margin-bottom: 20px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

/* サブタイトル共通スタイル */
.hajimeni-subtitle {
  font-size: 28px;
  font-weight: 700;
  color: #2c2c2c;
  margin: 50px 0 30px;
  padding-left: 20px;
  border-left: 5px solid #8B7355;
  display: flex;
  align-items: center;
  gap: 12px;
}

.subtitle-icon {
  font-size: 24px;
  opacity: 0.8;
}

.hajimeni-subsubtitle {
  font-size: 22px;
  font-weight: 600;
  color: #3a3a3a;
  margin: 30px 0 20px;
  padding: 10px 0;
  border-bottom: 2px solid #e8e8e8;
}

/* 段落とテキストスタイル */
.hajimeni-paragraph {
  font-size: 15px;
  line-height: 1.9;
  color: #555555;
  margin-bottom: 20px;
  text-align: justify;
}

.highlight-text {
  color: #8B7355;
  font-weight: 600;
  background: linear-gradient(transparent 60%, rgba(139, 115, 85, 0.1) 60%);
  padding: 2px 4px;
}

.bold-text {
  font-weight: 600;
  color: #3a3a3a;
}

.color-accent {
  color: #8B7355;
  font-weight: 500;
}

.emphasis-text {
  font-weight: 600;
  color: #6B5D54;
  font-style: italic;
}

.warning-text {
  color: #d4534a;
  font-weight: 500;
}

/* ボックススタイル */
.emphasis-box {
  background: #fcfaf8;
  border-left: 4px solid #8B7355;
  padding: 20px;
  margin: 30px 0;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(139, 115, 85, 0.08);
}

.opinion-box {
  background: linear-gradient(135deg, #f9f7f5 0%, #fdfcfb 100%);
  padding: 25px;
  margin: 30px 0;
  border-radius: 8px;
  border: 1px solid #e8e4e0;
}

.advice-box {
  background: #fffef9;
  border: 1px solid #e6dfd6;
  padding: 20px;
  margin: 25px 0;
  border-radius: 6px;
  position: relative;
}

.advice-box::before {
  content: '💡';
  position: absolute;
  top: -12px;
  left: 20px;
  background: #ffffff;
  padding: 0 8px;
  font-size: 20px;
}

.experience-story-box {
  background: #f8f6f4;
  border-left: 3px solid #6B5D54;
  padding: 20px;
  margin: 25px 0;
  font-style: italic;
}

.encouragement-box {
  background: linear-gradient(135deg, #fef8f2 0%, #fffdf8 100%);
  padding: 20px;
  margin: 25px 0;
  border-radius: 8px;
  border: 1px dashed #d4c4b0;
}

.check-point-box {
  background: #f9f9f9;
  padding: 20px;
  margin: 25px 0;
  border-radius: 6px;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

/* 画像エリア */
.hajimeni-image-area {
  margin: 40px 0;
  text-align: center;
  opacity: 0;
  animation: fadeInUp 0.6s ease-out forwards;
}

.hajimeni-responsive-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.image-caption {
  font-size: 14px;
  color: #777;
  margin-top: 12px;
  font-style: italic;
}

/* メリット・デメリット表示 */
.merit-demerit-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin: 30px 0;
}

.merit-block,
.demerit-block {
  background: #ffffff;
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.merit-block {
  border-top: 3px solid #5a9e5a;
}

.demerit-block {
  border-top: 3px solid #d4534a;
}

.merit-title,
.demerit-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
}

.merit-title {
  color: #5a9e5a;
}

.demerit-title {
  color: #d4534a;
}

.hajimeni-list {
  list-style: none;
  padding: 0;
}

.hajimeni-list li {
  padding: 8px 0;
  padding-left: 28px;
  position: relative;
  line-height: 1.6;
  font-size: 14px;
  color: #555;
}

.merit-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #5a9e5a;
  font-weight: 600;
  font-size: 16px;
}

.demerit-list li::before {
  content: '×';
  position: absolute;
  left: 0;
  color: #d4534a;
  font-weight: 600;
  font-size: 16px;
}

/* ギタータイプ詳細ブロック */
.guitar-type-detail-block {
  background: #fafafa;
  padding: 35px;
  margin: 30px 0;
  border-radius: 10px;
  position: relative;
  border: 1px solid #e8e8e8;
}

.acoustic-block {
  border-left: 5px solid #8B7355;
}

.electric-block {
  border-left: 5px solid #6B5D54;
}

.additional-info {
  background: #f5f5f5;
  padding: 15px;
  border-radius: 6px;
  margin-top: 20px;
  font-size: 14px;
}

/* 7つのポイントブロック */
.point-block {
  background: #ffffff;
  padding: 30px;
  margin: 25px 0;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  border-left: 4px solid #8B7355;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.point-block:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.point-title {
  font-size: 20px;
  font-weight: 600;
  color: #2c2c2c;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.point-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: #8B7355;
  color: #ffffff;
  border-radius: 50%;
  font-weight: 700;
  font-size: 16px;
}

/* 価格帯別ブロック */
.price-range-detail {
  background: #fcfcfc;
  padding: 35px;
  margin: 30px 0;
  border-radius: 10px;
  border: 1px solid #e0e0e0;
}

.price-range-title {
  font-size: 22px;
  font-weight: 600;
  color: #2c2c2c;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #8B7355;
}

.guitar-recommendation-wrapper {
  margin-top: 25px;
}

.guitar-category {
  margin-bottom: 35px;
}

.category-title {
  font-size: 18px;
  font-weight: 600;
  color: #4a4a4a;
  margin-bottom: 20px;
}

.guitar-item {
  background: #ffffff;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 6px;
  border: 1px solid #e8e8e8;
  transition: border-color 0.3s ease;
}

.guitar-item:hover {
  border-color: #8B7355;
}

.guitar-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #2c2c2c;
}

.brand-name {
  color: #8B7355;
  font-weight: 700;
}

.guitar-description {
  font-size: 14px;
  line-height: 1.7;
  color: #555;
}

.price-range-advice {
  background: #fef9f4;
  padding: 20px;
  margin-top: 25px;
  border-radius: 6px;
  border-left: 3px solid #8B7355;
}

/* FAQ ブロック */
.faq-item {
  background: #ffffff;
  padding: 25px;
  margin-bottom: 20px;
  border-radius: 8px;
  border: 1px solid #e8e8e8;
  transition: all 0.3s ease;
}

.faq-item:hover {
  box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
  transform: translateY(-1px);
}

.faq-question {
  font-size: 18px;
  font-weight: 600;
  color: #2c2c2c;
  margin-bottom: 15px;
  padding-left: 30px;
  position: relative;
}

.faq-question::before {
  content: 'Q:';
  position: absolute;
  left: 0;
  color: #8B7355;
  font-weight: 700;
  font-size: 20px;
}

.faq-answer {
  padding-left: 30px;
}

.amp-recommendations {
  background: #f9f9f9;
  padding: 20px;
  margin: 20px 0;
  border-radius: 6px;
}

.amp-item {
  padding: 10px 0;
  border-bottom: 1px solid #e0e0e0;
}

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

.amp-description {
  color: #666;
  font-size: 14px;
}

/* サマリーブロック */
.summary-points {
  background: #fafafa;
  padding: 30px;
  margin: 30px 0;
  border-radius: 8px;
}

.summary-list {
  list-style: none;
  padding: 0;
}

.summary-list li {
  padding: 12px 0;
  padding-left: 35px;
  position: relative;
  font-size: 15px;
  line-height: 1.7;
  color: #555;
}

.summary-list li::before {
  content: '✔';
  position: absolute;
  left: 0;
  color: #8B7355;
  font-weight: 700;
  font-size: 18px;
}

.point-highlight {
  font-weight: 600;
  color: #3a3a3a;
}

.final-message {
  text-align: center;
  margin: 40px 0;
  padding: 30px;
  background: linear-gradient(135deg, #fef8f2 0%, #fffdf8 100%);
  border-radius: 10px;
}

.emphasis-message {
  font-size: 18px;
  line-height: 1.8;
  color: #3a3a3a;
}

.next-chapter-teaser {
  background: #f5f5f5;
  padding: 25px;
  margin-top: 30px;
  border-radius: 8px;
  border-left: 4px solid #6B5D54;
}

/* CTA エリア */
.cta-area {
  margin-top: 50px;
  text-align: center;
}

.cta-box {
  background: linear-gradient(135deg, #8B7355 0%, #6B5D54 100%);
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(107, 93, 84, 0.15);
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
  animation: ctaPulse 4s ease-in-out infinite;
}

.cta-title {
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 15px;
}

.cta-text {
  font-size: 16px;
  color: #f5f5f5;
  margin-bottom: 25px;
  line-height: 1.6;
}

.cta-emphasis {
  color: #ffd700;
  font-weight: 700;
  font-size: 18px;
}

.cta-button {
  display: inline-block;
  padding: 16px 40px;
  background: #ffffff;
  color: #6B5D54;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 50px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 1;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.15);
  background: #fafafa;
}

/* 控えめなアニメーション */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ctaPulse {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(-10%, -10%) rotate(180deg);
  }
}

/* レスポンシブ対応 */
@media screen and (max-width: 1024px) {
  .hajimeni-container-wrapper {
    padding: 40px;
  }
  
  .hajimeni-main-title {
    font-size: 32px;
  }
  
  .hajimeni-subtitle {
    font-size: 24px;
  }
  
  .merit-demerit-wrapper {
    gap: 20px;
  }
}

@media screen and (max-width: 768px) {
  .guitar-hajimeni-section-2025 {
    padding: 60px 15px;
  }
  
  .hajimeni-container-wrapper {
    padding: 30px 20px;
    border-radius: 8px;
  }
  
  .hajimeni-main-title {
    font-size: 28px;
  }
  
  .hajimeni-subtitle {
    font-size: 22px;
    padding-left: 15px;
  }
  
  .hajimeni-subsubtitle {
    font-size: 20px;
  }
  
  .merit-demerit-wrapper {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .guitar-type-detail-block,
  .point-block,
  .price-range-detail {
    padding: 25px 20px;
  }
  
  .cta-box {
    padding: 30px 20px;
  }
  
  .cta-button {
    padding: 14px 32px;
    font-size: 15px;
  }
  
  .point-title {
    font-size: 18px;
  }
  
  .faq-question {
    font-size: 16px;
  }
}

@media screen and (max-width: 480px) {
  .guitar-hajimeni-section-2025 {
    padding: 40px 10px;
  }
  
  .hajimeni-container-wrapper {
    padding: 20px 15px;
  }
  
  .hajimeni-main-title {
    font-size: 24px;
    margin-bottom: 20px;
  }
  
  .hajimeni-subtitle {
    font-size: 20px;
    margin: 35px 0 20px;
    padding-left: 12px;
    border-left-width: 4px;
  }
  
  .subtitle-icon {
    font-size: 18px;
  }
  
  .hajimeni-subsubtitle {
    font-size: 18px;
  }
  
  .hajimeni-paragraph {
    font-size: 14px;
    line-height: 1.8;
    text-align: left;
  }
  
  .guitar-type-detail-block,
  .point-block,
  .price-range-detail,
  .faq-item {
    padding: 20px 15px;
    margin: 20px 0;
  }
  
  .point-number {
    width: 28px;
    height: 28px;
    font-size: 14px;
  }
  
  .cta-box {
    padding: 25px 15px;
  }
  
  .cta-title {
    font-size: 18px;
  }
  
  .cta-text {
    font-size: 14px;
  }
  
  .cta-button {
    padding: 12px 28px;
    font-size: 14px;
    width: 100%;
    max-width: 280px;
  }
  
  .hajimeni-list li {
    font-size: 13px;
    padding-left: 24px;
  }
  
  .guitar-name {
    font-size: 15px;
  }
  
  .guitar-description {
    font-size: 13px;
  }
  
  .hajimeni-image-area {
    margin: 25px 0;
  }
  
  .image-caption {
    font-size: 12px;
  }
  
  .summary-list li {
    font-size: 14px;
    padding-left: 30px;
  }
}

/* 印刷対応 */
@media print {
  .guitar-hajimeni-section-2025 {
    background: none;
    padding: 20px;
  }
  
  .hajimeni-container-wrapper {
    box-shadow: none;
    border: 1px solid #ddd;
  }
  
  .cta-area {
    display: none;
  }
  
  .point-block:hover,
  .faq-item:hover,
  .guitar-item:hover {
    transform: none;
    box-shadow: none;
  }
}

/* ========================================
   絶対に必要なアクセサリー セクション
   ======================================== */

.essential-accessories-section-gtr2025 {
  padding: 80px 0;
  background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 100%);
  position: relative;
  overflow: hidden;
}

.essential-accessories-section-gtr2025::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #ff6b35, #f7931e, #ff6b35);
  background-size: 200% 100%;
  animation: gradientSlide 3s ease-in-out infinite;
}

@keyframes gradientSlide {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.container-essential-acc-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* メインタイトル */
.section-title-essential-acc {
  font-size: 2.5rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 40px;
  text-align: center;
  position: relative;
  padding-bottom: 20px;
}

.section-title-essential-acc::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, #ff6b35, #f7931e);
  border-radius: 2px;
}

/* イントロテキスト */
.intro-text-essential-box {
  text-align: center;
  margin-bottom: 50px;
  padding: 30px;
  background: white;
  border-radius: 10px;
  box-shadow: 0 3px 15px rgba(0,0,0,0.08);
}

.lead-text-essential {
  font-size: 1.25rem;
  line-height: 1.8;
  color: #555;
}

.highlight-text-orange {
  color: #ff6b35;
  font-weight: 700;
  position: relative;
  padding: 0 4px;
}

.highlight-yellow {
  background: linear-gradient(transparent 60%, #ffe082 60%);
  padding: 0 3px;
  font-weight: 600;
}

/* アクセサリーアイテムブロック */
.accessory-item-block {
  margin-bottom: 60px;
  background: white;
  border-radius: 15px;
  padding: 40px;
  box-shadow: 0 5px 25px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.accessory-item-block:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

/* サブタイトル H5 */
.sub-title-accessory-h5 {
  font-size: 1.8rem;
  color: #2c3e50;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 15px;
  padding-bottom: 15px;
  border-bottom: 2px solid #f0f0f0;
}

.icon-wrapper-acc {
  font-size: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #ff6b35, #f7931e);
  border-radius: 50%;
  animation: iconPulse 2s ease-in-out infinite;
}

@keyframes iconPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.emphasis-red {
  color: #e74c3c;
  font-weight: 700;
}

.emphasis-orange {
  color: #ff6b35;
  font-weight: 700;
}

.emphasis-blue {
  color: #3498db;
  font-weight: 700;
}

.emphasis-green {
  color: #27ae60;
  font-weight: 700;
}

/* コンテンツラッパー */
.content-wrapper-tuner,
.content-wrapper-pick,
.content-wrapper-strap,
.content-wrapper-strings {
  padding-top: 20px;
}

.description-text-acc {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #555;
  margin-bottom: 30px;
}

/* 画像プレースホルダー */
.image-placeholder-full-width {
  width: 100%;
  margin: 30px 0;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.responsive-img-acc {
  width: 100%;
  height: auto;
  display: block;
}

.image-caption {
  background: #f8f9fa;
  padding: 12px 20px;
  font-size: 0.95rem;
  color: #666;
  text-align: center;
  border-top: 1px solid #e0e0e0;
  margin: 0;
}

/* チューナータイプコンテナー */
.tuner-types-container {
  display: flex;
  flex-direction: column;
  gap: 30px;
  margin-top: 30px;
}

.tuner-type-block {
  background: #f8f9fa;
  border-radius: 12px;
  padding: 30px;
  border-left: 4px solid #ff6b35;
}

.type-title-h6 {
  font-size: 1.4rem;
  color: #2c3e50;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge-new {
  background: linear-gradient(135deg, #ff6b35, #f7931e);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.type-description {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #666;
  margin-bottom: 20px;
}

/* レコメンデーションボックス */
.recommendation-box-clip,
.recommendation-box-pedal {
  background: white;
  border-radius: 10px;
  padding: 25px;
  margin-top: 20px;
  border: 1px solid #e0e0e0;
}

.recommend-title {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.recommend-list-tuner {
  list-style: none;
  padding: 0;
  margin: 0;
}

.recommend-item {
  padding: 15px;
  margin-bottom: 15px;
  background: #fafafa;
  border-radius: 8px;
  border-left: 3px solid #ff6b35;
  transition: background 0.3s ease;
}

.recommend-item:hover {
  background: #f0f0f0;
}

.recommend-item.premium {
  border-left-color: #f7931e;
  background: linear-gradient(135deg, #fff8f0 0%, #fffef8 100%);
}

.product-name {
  color: #2c3e50;
  font-size: 1.1rem;
}

.price-tag {
  display: inline-block;
  background: #27ae60;
  color: white;
  padding: 4px 10px;
  border-radius: 15px;
  font-size: 0.85rem;
  margin-left: 10px;
  font-weight: 600;
}

.product-desc {
  margin-top: 10px;
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
}

.feature-highlight {
  background: #ffe082;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}

/* スマホアプリタイプ */
.app-type {
  background: #f0f8ff;
  border-left-color: #3498db;
}

.free-badge {
  background: #27ae60;
  color: white;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 600;
}

.caution-text {
  color: #e74c3c;
  font-weight: 600;
}

/* サマリーボックス */
.recommendation-summary-box {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  background: linear-gradient(135deg, #fff8f0 0%, #fffef8 100%);
  padding: 25px;
  border-radius: 10px;
  margin-top: 30px;
  border: 1px solid #ffe0b2;
}

.summary-icon {
  font-size: 1.5rem;
  margin: 0;
}

.summary-text {
  flex: 1;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin: 0;
}

/* ピックセクション */
.pick-characteristics {
  margin-top: 30px;
}

.thickness-guide,
.material-guide {
  background: #f8f9fa;
  padding: 30px;
  border-radius: 12px;
  margin-bottom: 30px;
}

.guide-title-h6 {
  font-size: 1.3rem;
  color: #2c3e50;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid #ff6b35;
}

.guide-intro {
  font-size: 1.05rem;
  color: #666;
  margin-bottom: 20px;
}

.thickness-options {
  display: grid;
  gap: 20px;
  margin-top: 20px;
}

.thickness-item {
  background: white;
  padding: 20px;
  border-radius: 8px;
  border-left: 3px solid #ff6b35;
  display: grid;
  grid-template-columns: 120px 150px 1fr;
  align-items: center;
  gap: 20px;
  transition: transform 0.3s ease;
}

.thickness-item:hover {
  transform: translateX(5px);
}

.thickness-item.medium {
  border-left-color: #27ae60;
  background: #f0fff4;
}

.thickness-label {
  font-weight: 600;
  color: #2c3e50;
}

.thickness-value {
  color: #ff6b35;
  font-weight: 700;
  font-size: 1.1rem;
}

.thickness-desc {
  font-size: 0.95rem;
  color: #666;
  margin: 0;
}

/* パーソナルノートボックス */
.personal-note-box {
  background: linear-gradient(135deg, #e8f5e9 0%, #f1f8e9 100%);
  padding: 20px;
  border-radius: 8px;
  margin-top: 25px;
  border-left: 3px solid #27ae60;
}

.note-text {
  font-size: 1.05rem;
  color: #555;
  line-height: 1.7;
  margin: 0;
}

/* マテリアルリスト */
.material-list {
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

.material-item {
  padding: 15px;
  margin-bottom: 15px;
  background: white;
  border-radius: 8px;
  transition: background 0.3s ease;
  position: relative;
  padding-left: 25px;
}

.material-item::before {
  content: '▸';
  position: absolute;
  left: 10px;
  color: #ff6b35;
  font-weight: 700;
}

.material-item.recommended {
  background: #f0fff4;
  border: 1px solid #27ae60;
}

.badge-recommend {
  background: #27ae60;
  color: white;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  margin-left: 10px;
  font-weight: 600;
}

/* おすすめピックボックス */
.recommended-picks-box,
.recommended-straps-box,
.recommended-strings-box {
  background: white;
  border: 2px solid #f0f0f0;
  border-radius: 12px;
  padding: 30px;
  margin-top: 30px;
}

.box-title {
  font-size: 1.3rem;
  color: #2c3e50;
  margin-bottom: 20px;
  text-align: center;
  position: relative;
}

.box-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 2px;
  background: #ff6b35;
}

.picks-list,
.straps-list {
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

.pick-item,
.strap-item {
  padding: 20px;
  margin-bottom: 15px;
  background: #f8f9fa;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.pick-item:hover,
.strap-item:hover {
  background: #f0f0f0;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.strap-item.special {
  background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
}

.feature-badge {
  background: #e74c3c;
  color: white;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* ティップスボックス */
.tips-box-pick {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  background: #e3f2fd;
  padding: 20px;
  border-radius: 8px;
  margin-top: 20px;
  border-left: 3px solid #3498db;
}

.tips-icon {
  font-size: 1.5rem;
  margin: 0;
}

.tips-text {
  font-size: 1rem;
  color: #555;
  line-height: 1.6;
  margin: 0;
}

/* ストラップセクション */
.material-cards-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin: 20px 0;
}

.material-card {
  background: white;
  padding: 25px;
  border-radius: 10px;
  border: 1px solid #e0e0e0;
  transition: all 0.3s ease;
}

.material-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  border-color: #ff6b35;
}

.material-card.nylon {
  border-top: 3px solid #3498db;
}

.material-card.cotton {
  border-top: 3px solid #27ae60;
}

.material-card.leather {
  border-top: 3px solid #8b4513;
}

.card-title {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 10px;
  font-weight: 600;
}

.card-desc {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
}

.important-point {
  background: #ffe082;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}

/* 調整説明 */
.strap-adjustment,
.strap-pin-info {
  background: #f8f9fa;
  padding: 25px;
  border-radius: 10px;
  margin: 25px 0;
}

.adjustment-text,
.pin-description {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
}

.tip-highlight {
  color: #ff6b35;
  font-weight: 600;
}

/* 弦セクション */
.string-types-container {
  display: grid;
  gap: 30px;
  margin-top: 30px;
}

.string-type-acoustic,
.string-type-electric {
  background: #f8f9fa;
  padding: 30px;
  border-radius: 12px;
}

.string-type-acoustic {
  border-left: 4px solid #8b4513;
}

.string-type-electric {
  border-left: 4px solid #3498db;
}

.type-intro {
  font-size: 1.05rem;
  color: #666;
  margin-bottom: 20px;
}

.string-options {
  background: white;
  padding: 20px;
  border-radius: 8px;
  margin: 20px 0;
}

.string-option {
  padding: 10px 0;
  border-bottom: 1px solid #f0f0f0;
}

.string-option:last-child {
  border-bottom: none;
}

.gauge-info {
  background: #fffef0;
  padding: 20px;
  border-radius: 8px;
  border-left: 3px solid #f7931e;
  margin-top: 20px;
}

.gauge-list {
  margin-top: 20px;
}

.gauge-item {
  background: white;
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 15px;
  border-left: 3px solid #3498db;
}

.badge-beginner {
  background: #27ae60;
  color: white;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-left: 10px;
}

/* 弦のレコメンデーション */
.strings-recommendations {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.acoustic-strings,
.electric-strings {
  background: #f8f9fa;
  padding: 20px;
  border-radius: 8px;
}

.category-label {
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 10px;
}

.acoustic-strings ul,
.electric-strings ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.acoustic-strings li,
.electric-strings li {
  padding: 10px 0;
  border-bottom: 1px solid #e0e0e0;
}

.acoustic-strings li:last-child,
.electric-strings li:last-child {
  border-bottom: none;
}

/* メンテナンスティップ */
.maintenance-tip-box {
  display: flex;
  align-items: center;
  gap: 15px;
  background: linear-gradient(135deg, #e8eaf6 0%, #e3f2fd 100%);
  padding: 25px;
  border-radius: 10px;
  margin-top: 25px;
  border-left: 3px solid #3498db;
}

.tip-icon {
  font-size: 2rem;
}

.tip-text {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin: 0;
}

.frequency-highlight {
  background: #c5e1a5;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
  .essential-accessories-section-gtr2025 {
    padding: 50px 0;
  }
  
  .section-title-essential-acc {
    font-size: 2rem;
  }
  
  .sub-title-accessory-h5 {
    font-size: 1.4rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  
  .icon-wrapper-acc {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
  }
  
  .accessory-item-block {
    padding: 25px;
    margin-bottom: 40px;
  }
  
  .thickness-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  
  .material-cards-container {
    grid-template-columns: 1fr;
  }
  
  .strings-recommendations {
    grid-template-columns: 1fr;
  }
  
  .lead-text-essential {
    font-size: 1.1rem;
  }
  
  .description-text-acc {
    font-size: 1rem;
  }
  
  .recommend-item {
    padding: 12px;
  }
  
  .product-name {
    font-size: 1rem;
    display: block;
    margin-bottom: 5px;
  }
  
  .price-tag {
    margin-left: 0;
  }
}

@media (max-width: 480px) {
  .container-essential-acc-wrapper {
    padding: 0 15px;
  }
  
  .section-title-essential-acc {
    font-size: 1.6rem;
    margin-bottom: 25px;
  }
  
  .sub-title-accessory-h5 {
    font-size: 1.2rem;
  }
  
  .intro-text-essential-box {
    padding: 20px;
    margin-bottom: 30px;
  }
  
  .accessory-item-block {
    padding: 20px;
    border-radius: 10px;
  }
  
  .guide-title-h6,
  .type-title-h6,
  .box-title {
    font-size: 1.1rem;
  }
  
  .thickness-guide,
  .material-guide,
  .recommendation-box-clip,
  .recommendation-box-pedal,
  .recommended-picks-box,
  .recommended-straps-box,
  .recommended-strings-box {
    padding: 20px;
  }
  
  .image-placeholder-full-width {
    margin: 20px 0;
  }
  
  .tips-box-pick,
  .maintenance-tip-box,
  .recommendation-summary-box {
    flex-direction: column;
    gap: 10px;
  }
  
  .summary-icon,
  .tips-icon,
  .tip-icon {
    font-size: 1.2rem;
  }
}

/* アニメーション控えめ設定 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* プリント対応 */
@media print {
  .essential-accessories-section-gtr2025 {
    background: white;
    padding: 20px 0;
  }
  
  .accessory-item-block {
    box-shadow: none;
    border: 1px solid #ddd;
    page-break-inside: avoid;
  }
  
  .icon-wrapper-acc {
    animation: none;
  }
}


/* ========================================
   あると便利なアクセサリー セクション
   ======================================== */

.convenient-accessories-section-gtr2025 {
  padding: 80px 0;
  background: linear-gradient(180deg, #ffffff 0%, #fafafa 50%, #f5f5f5 100%);
  position: relative;
}

.convenient-accessories-section-gtr2025::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, #3498db, #2ecc71, #3498db);
  border-radius: 2px;
  opacity: 0.8;
}

.container-convenient-acc-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* メインタイトル */
.section-title-convenient-acc {
  font-size: 2.5rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 40px;
  text-align: center;
  position: relative;
  padding-bottom: 20px;
}

.section-title-convenient-acc::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, #3498db, #2ecc71);
  border-radius: 2px;
}

/* イントロテキスト */
.intro-text-convenient-box {
  text-align: center;
  margin-bottom: 50px;
  padding: 30px;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border-radius: 12px;
  box-shadow: 0 3px 20px rgba(0,0,0,0.06);
  border: 1px solid rgba(52, 152, 219, 0.1);
}

.lead-text-convenient {
  font-size: 1.25rem;
  line-height: 1.8;
  color: #555;
}

.highlight-text-blue {
  color: #3498db;
  font-weight: 700;
  position: relative;
}

.highlight-green {
  background: linear-gradient(transparent 60%, #a8e6cf 60%);
  padding: 0 3px;
  font-weight: 600;
}

.highlight-orange {
  color: #ff6b35;
  font-weight: 700;
  background: linear-gradient(transparent 70%, rgba(255, 107, 53, 0.2) 70%);
  padding: 0 4px;
}

.highlight-yellow {
  background: linear-gradient(transparent 60%, #fff3cd 60%);
  padding: 0 3px;
  font-weight: 600;
}

/* アクセサリーアイテムブロック */
.accessory-convenient-block {
  margin-bottom: 60px;
  background: white;
  border-radius: 16px;
  padding: 45px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  border: 1px solid rgba(0,0,0,0.05);
  transition: all 0.3s ease;
}

.accessory-convenient-block:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 30px rgba(0,0,0,0.1);
}

/* サブタイトル H5 */
.sub-title-convenient-h5 {
  font-size: 1.8rem;
  color: #2c3e50;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 15px;
  padding-bottom: 15px;
  border-bottom: 2px solid #e8f4f8;
}

.icon-wrapper-conv {
  font-size: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #3498db, #2ecc71);
  border-radius: 12px;
  box-shadow: 0 3px 10px rgba(52, 152, 219, 0.3);
}

.emphasis-blue {
  color: #3498db;
  font-weight: 700;
}

.emphasis-orange {
  color: #ff6b35;
  font-weight: 700;
}

.emphasis-red {
  color: #e74c3c;
  font-weight: 700;
}

/* コンテンツラッパー */
.content-wrapper-capo,
.content-wrapper-stand,
.content-wrapper-case,
.content-wrapper-metronome,
.content-wrapper-maintenance,
.content-wrapper-string-tools {
  padding-top: 20px;
}

.description-text-conv {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #555;
  margin-bottom: 30px;
}

/* カポ説明ボックス */
.capo-explanation-box {
  background: linear-gradient(135deg, #e8f4f8 0%, #f0f8fc 100%);
  border-radius: 12px;
  padding: 30px;
  margin: 30px 0;
  border-left: 4px solid #3498db;
}

.explanation-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 15px;
}

.example-icon {
  font-size: 1.5rem;
}

.explanation-title {
  font-size: 1.3rem;
  color: #2c3e50;
  margin: 0;
  font-weight: 600;
}

.explanation-text {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin-bottom: 20px;
}

.benefit-highlight {
  background: white;
  padding: 20px;
  border-radius: 8px;
  margin-top: 20px;
}

.benefit-text {
  font-size: 1.05rem;
  color: #555;
  margin: 0;
}

/* 画像プレースホルダー */
.image-placeholder-full-width {
  width: 100%;
  margin: 35px 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.responsive-img-conv {
  width: 100%;
  height: auto;
  display: block;
}

.image-caption {
  background: #f8f9fa;
  padding: 15px 20px;
  font-size: 0.95rem;
  color: #666;
  text-align: center;
  border-top: 1px solid #e0e0e0;
  margin: 0;
}

/* カポ製品レコメンデーション */
.capo-recommendations {
  margin-top: 40px;
}

.recommendation-title {
  font-size: 1.4rem;
  color: #2c3e50;
  margin-bottom: 25px;
  text-align: center;
  position: relative;
}

.recommendation-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: #3498db;
}

.capo-products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  margin: 30px 0;
}

.capo-product-card {
  background: #f8f9fa;
  padding: 25px;
  border-radius: 10px;
  border: 1px solid #e0e0e0;
  transition: all 0.3s ease;
}

.capo-product-card:hover {
  background: white;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.capo-product-card.premium-product {
  background: linear-gradient(135deg, #fff8f0 0%, #fffef8 100%);
  border: 1px solid rgba(255, 107, 53, 0.2);
}

.product-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  flex-wrap: wrap;
  gap: 10px;
}

.product-name-conv {
  color: #2c3e50;
  font-size: 1.15rem;
}

.price-tag-conv {
  background: #27ae60;
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.product-description-conv {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
  margin-bottom: 15px;
}

.product-rating {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid #e0e0e0;
}

.rating-stars {
  font-size: 1.1rem;
}

.rating-text {
  font-size: 0.85rem;
  color: #888;
  font-style: italic;
}

.feature-text {
  color: #3498db;
  font-weight: 600;
}

/* パーソナル経験ボックス */
.personal-experience-box {
  background: linear-gradient(135deg, #f0f8ff 0%, #e8f4fd 100%);
  padding: 25px;
  border-radius: 10px;
  margin-top: 30px;
  border-left: 3px solid #3498db;
}

.experience-text {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin: 0;
}

/* スタンドタイプコンテナー */
.stand-types-container {
  margin-top: 30px;
}

.stand-type-item {
  background: #f8f9fa;
  padding: 30px;
  border-radius: 12px;
  margin-bottom: 30px;
}

.floor-type {
  border-left: 4px solid #27ae60;
}

.wall-type {
  border-left: 4px solid #8b4513;
}

.stand-type-title {
  font-size: 1.3rem;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.stand-type-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin-bottom: 20px;
}

.product-examples {
  background: white;
  padding: 20px;
  border-radius: 8px;
  margin-top: 20px;
}

.example-product {
  padding: 15px 0;
  border-bottom: 1px solid #e0e0e0;
}

.example-product:last-child {
  border-bottom: none;
}

.example-product strong {
  color: #2c3e50;
  display: block;
  margin-bottom: 8px;
}

.example-product p {
  font-size: 0.95rem;
  color: #666;
  margin: 0;
}

.warning-text {
  color: #e74c3c;
  font-weight: 600;
}

.advantage-text {
  color: #27ae60;
  font-weight: 600;
}

/* 著者ノート */
.author-note-box {
  background: linear-gradient(135deg, #fffef0 0%, #fffdf8 100%);
  padding: 25px;
  border-radius: 10px;
  margin-top: 30px;
  border-left: 3px solid #f7931e;
}

.author-note {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin: 0;
}

/* ケースタイプ比較 */
.case-types-comparison {
  margin-top: 30px;
}

.case-type {
  background: #f8f9fa;
  padding: 30px;
  border-radius: 12px;
  margin-bottom: 30px;
}

.soft-case {
  border-left: 4px solid #3498db;
}

.hard-case {
  border-left: 4px solid #e74c3c;
}

.case-type-title {
  font-size: 1.3rem;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.case-features {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin-bottom: 20px;
}

.case-products-list {
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

.case-product-item {
  background: white;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 15px;
  transition: all 0.3s ease;
}

.case-product-item:hover {
  transform: translateX(5px);
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.product-info {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.badge-pro {
  background: #9b59b6;
  color: white;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-value {
  background: #2ecc71;
  color: white;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-beginner {
  background: #3498db;
  color: white;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* ケースレコメンデーション */
.case-recommendation-box {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  background: linear-gradient(135deg, #e8f5e9 0%, #f1f8e9 100%);
  padding: 25px;
  border-radius: 10px;
  margin-top: 30px;
  border: 1px solid rgba(46, 204, 113, 0.2);
}

.recommendation-icon {
  font-size: 1.5rem;
  margin: 0;
}

.recommendation-text {
  flex: 1;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin: 0;
}

/* メトロノームオプション */
.metronome-options {
  margin-top: 30px;
}

.option-block {
  background: #f8f9fa;
  padding: 25px;
  border-radius: 10px;
  margin-bottom: 25px;
}

.app-option {
  border-left: 3px solid #3498db;
}

.device-option {
  border-left: 3px solid #9b59b6;
}

.option-title {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.option-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin-bottom: 20px;
}

.free-text {
  color: #27ae60;
  font-weight: 600;
}

.device-products {
  background: white;
  padding: 20px;
  border-radius: 8px;
  margin-top: 20px;
}

.device-item {
  padding: 15px 0;
  border-bottom: 1px solid #e0e0e0;
}

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

.device-item.premium {
  background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
  padding: 15px;
  border-radius: 6px;
  margin-top: 10px;
  border: none;
}

/* 練習ティップ */
.practice-tip-box {
  background: linear-gradient(135deg, #fce4ec 0%, #f8bbd0 100%);
  padding: 25px;
  border-radius: 10px;
  margin-top: 30px;
}

.tip-title {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 10px;
  font-weight: 600;
}

.tip-content {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
}

/* メンテナンスアイテムグリッド */
.maintenance-items-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.maintenance-item {
  background: white;
  padding: 25px;
  border-radius: 10px;
  border: 1px solid #e0e0e0;
  transition: all 0.3s ease;
}

.maintenance-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.cloth-item {
  border-top: 3px solid #3498db;
}

.oil-item {
  border-top: 3px solid #f7931e;
}

.string-care {
  border-top: 3px solid #27ae60;
}

.humidity-control {
  border-top: 3px solid #e74c3c;
}

.item-title {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.item-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #666;
  margin-bottom: 15px;
}

.product-list-maintenance {
  list-style: none;
  padding: 0;
  margin: 15px 0 0 0;
}

.product-list-maintenance li {
  padding: 10px;
  background: #f8f9fa;
  border-radius: 6px;
  margin-bottom: 10px;
  font-size: 0.95rem;
  line-height: 1.5;
}

.important-text {
  color: #e74c3c;
  font-weight: 600;
}

.caution-highlight {
  background: #ffe0e0;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}

/* メンテナンスルーティンボックス */
.maintenance-routine-box {
  background: linear-gradient(135deg, #e0f2f1 0%, #b2dfdb 100%);
  padding: 25px;
  border-radius: 10px;
  margin-top: 30px;
  border-left: 3px solid #00897b;
}

.routine-title {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 10px;
  font-weight: 600;
}

.routine-text {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
}

/* 弦交換ツール */
.string-tools-container {
  margin-top: 30px;
}

.tool-item {
  background: #f8f9fa;
  padding: 30px;
  border-radius: 12px;
  margin-bottom: 30px;
}

.peg-winder {
  border-left: 4px solid #3498db;
}

.string-cutter {
  border-left: 4px solid #27ae60;
}

.hex-wrench {
  border-left: 4px solid #9b59b6;
}

.tool-title {
  font-size: 1.3rem;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.tool-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin-bottom: 20px;
}

.tool-products {
  display: grid;
  gap: 15px;
}

.product-card-tool {
  background: white;
  padding: 20px;
  border-radius: 8px;
  position: relative;
  transition: all 0.3s ease;
}

.product-card-tool:hover {
  transform: translateX(3px);
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.product-card-tool.premium {
  background: linear-gradient(135deg, #fff8f0 0%, #fffef8 100%);
}

.feature-badge-tool {
  position: absolute;
  top: 10px;
  right: 10px;
  background: #e74c3c;
  color: white;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.quality-text {
  color: #f7931e;
  font-weight: 600;
}

/* 初心者アドバイスボックス */
.beginner-advice-box {
  background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
  padding: 30px;
  border-radius: 12px;
  margin-top: 35px;
  border: 1px solid rgba(255, 152, 0, 0.2);
}

.advice-title {
  font-size: 1.3rem;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.advice-text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #555;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
  .convenient-accessories-section-gtr2025 {
    padding: 50px 0;
  }
  
  .section-title-convenient-acc {
    font-size: 2rem;
  }
  
  .sub-title-convenient-h5 {
    font-size: 1.4rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  
  .icon-wrapper-conv {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
  }
  
  .accessory-convenient-block {
    padding: 25px;
    margin-bottom: 40px;
  }
  
  .capo-products-grid {
    grid-template-columns: 1fr;
  }
  
  .maintenance-items-grid {
    grid-template-columns: 1fr;
  }
  
  .product-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .lead-text-convenient {
    font-size: 1.1rem;
  }
  
  .description-text-conv {
    font-size: 1rem;
  }
  
  .recommendation-title,
  .stand-type-title,
  .case-type-title,
  .tool-title {
    font-size: 1.1rem;
  }
}

@media (max-width: 480px) {
  .container-convenient-acc-wrapper {
    padding: 0 15px;
  }
  
  .section-title-convenient-acc {
    font-size: 1.6rem;
    margin-bottom: 25px;
  }
  
  .sub-title-convenient-h5 {
    font-size: 1.2rem;
  }
  
  .intro-text-convenient-box {
    padding: 20px;
    margin-bottom: 30px;
  }
  
  .accessory-convenient-block {
    padding: 20px;
    border-radius: 10px;
  }
  
  .capo-explanation-box,
  .personal-experience-box,
  .author-note-box,
  .case-recommendation-box,
  .practice-tip-box,
  .maintenance-routine-box,
  .beginner-advice-box {
    padding: 20px;
  }
  
  .stand-type-item,
  .case-type,
  .tool-item {
    padding: 20px;
  }
  
  .image-placeholder-full-width {
    margin: 20px 0;
  }
  
  .explanation-header,
  .case-recommendation-box {
    flex-direction: column;
    gap: 10px;
  }
}

/* アニメーション控えめ設定 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* プリント対応 */
@media print {
  .convenient-accessories-section-gtr2025 {
    background: white;
    padding: 20px 0;
  }
  
  .accessory-convenient-block {
    box-shadow: none;
    border: 1px solid #ddd;
    page-break-inside: avoid;
  }
  
  .icon-wrapper-conv {
    background: none;
    border: 1px solid #333;
  }
}

/* ========================================
   必要に応じて検討したいアクセサリー セクション
   ======================================== */

.optional-accessories-section-gtr2025 {
  padding: 80px 0;
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 50%, #f5f6fa 100%);
  position: relative;
  overflow: hidden;
}

.optional-accessories-section-gtr2025::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, #9b59b6, #8e44ad, #9b59b6);
  background-size: 200% 100%;
}

.optional-accessories-section-gtr2025::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, rgba(155, 89, 182, 0.05) 0%, transparent 70%);
  border-radius: 50%;
}

.container-optional-acc-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* メインタイトル */
.section-title-optional-acc {
  font-size: 2.5rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 45px;
  text-align: center;
  position: relative;
  padding-bottom: 25px;
}

.section-title-optional-acc::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 3px;
  background: linear-gradient(90deg, #9b59b6, #8e44ad, #9b59b6);
  border-radius: 2px;
}

/* イントロテキスト */
.intro-text-optional-box {
  text-align: center;
  margin-bottom: 55px;
  padding: 35px;
  background: linear-gradient(135deg, #ffffff 0%, #faf5ff 100%);
  border-radius: 14px;
  box-shadow: 0 4px 25px rgba(155, 89, 182, 0.08);
  border: 1px solid rgba(155, 89, 182, 0.1);
}

.lead-text-optional {
  font-size: 1.3rem;
  line-height: 1.8;
  color: #555;
  margin: 0;
}

.highlight-text-purple {
  color: #9b59b6;
  font-weight: 700;
  position: relative;
}

.highlight-purple {
  background: linear-gradient(transparent 65%, rgba(155, 89, 182, 0.2) 65%);
  padding: 0 4px;
  font-weight: 600;
}

.highlight-green {
  background: linear-gradient(transparent 65%, rgba(46, 204, 113, 0.3) 65%);
  padding: 0 4px;
  font-weight: 600;
  color: #27ae60;
}

.highlight-blue {
  background: linear-gradient(transparent 65%, rgba(52, 152, 219, 0.2) 65%);
  padding: 0 4px;
  font-weight: 600;
  color: #3498db;
}

.highlight-orange {
  background: linear-gradient(transparent 65%, rgba(255, 107, 53, 0.2) 65%);
  padding: 0 4px;
  font-weight: 600;
  color: #ff6b35;
}

/* アクセサリーオプショナルブロック */
.accessory-optional-block {
  margin-bottom: 65px;
  background: white;
  border-radius: 18px;
  padding: 50px;
  box-shadow: 0 6px 30px rgba(0,0,0,0.08);
  border: 1px solid rgba(0,0,0,0.04);
  transition: all 0.4s ease;
  position: relative;
}

.accessory-optional-block:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 40px rgba(0,0,0,0.12);
}

.accessory-optional-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #9b59b6, #8e44ad);
  border-radius: 18px 18px 0 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.accessory-optional-block:hover::before {
  opacity: 1;
}

/* サブタイトル H5 */
.sub-title-optional-h5 {
  font-size: 1.9rem;
  color: #2c3e50;
  margin-bottom: 35px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding-bottom: 18px;
  border-bottom: 2px solid #f4e8ff;
}

.icon-wrapper-opt {
  font-size: 2.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 55px;
  height: 55px;
  background: linear-gradient(135deg, #9b59b6, #8e44ad);
  border-radius: 14px;
  box-shadow: 0 4px 15px rgba(155, 89, 182, 0.3);
}

.emphasis-purple {
  color: #9b59b6;
  font-weight: 700;
}

/* コンテンツラッパー */
.content-wrapper-effector,
.content-wrapper-recorder,
.content-wrapper-music-stand,
.content-wrapper-footstool {
  padding-top: 25px;
}

.description-text-opt {
  font-size: 1.15rem;
  line-height: 1.8;
  color: #555;
  margin-bottom: 35px;
}

/* エフェクタータイプコンテナー */
.effector-types-container {
  display: flex;
  flex-direction: column;
  gap: 35px;
  margin-top: 35px;
}

.effector-type {
  background: linear-gradient(135deg, #fafafa 0%, #f8f9fa 100%);
  border-radius: 14px;
  padding: 35px;
  position: relative;
}

.multi-effector {
  border-left: 4px solid #9b59b6;
}

.compact-effector {
  border-left: 4px solid #3498db;
}

.type-header-eff {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
}

.type-title-eff {
  font-size: 1.4rem;
  color: #2c3e50;
  margin: 0;
  font-weight: 600;
}

.badge-recommended {
  background: linear-gradient(135deg, #27ae60, #2ecc71);
  color: white;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-advanced {
  background: linear-gradient(135deg, #3498db, #2980b9);
  color: white;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.type-description-eff {
  font-size: 1.1rem;
  line-height: 1.7;
  color: #666;
  margin-bottom: 25px;
}

/* エフェクター製品グリッド */
.effector-products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  margin: 30px 0;
}

.effector-product-card {
  background: white;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 3px 15px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
  position: relative;
}

.effector-product-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 25px rgba(0,0,0,0.12);
}

.effector-product-card.premium {
  background: linear-gradient(135deg, #faf5ff 0%, #f8f0ff 100%);
  border: 1px solid rgba(155, 89, 182, 0.2);
}

.product-info-eff {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  flex-wrap: wrap;
  gap: 10px;
}

.product-name-eff {
  color: #2c3e50;
  font-size: 1.2rem;
}

.price-tag-eff {
  background: linear-gradient(135deg, #9b59b6, #8e44ad);
  color: white;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.product-desc-eff {
  font-size: 0.98rem;
  color: #666;
  line-height: 1.6;
  margin-bottom: 15px;
}

.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feature-tag {
  background: #f4e8ff;
  color: #9b59b6;
  padding: 4px 10px;
  border-radius: 15px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* 画像プレースホルダー */
.image-placeholder-full-width {
  width: 100%;
  margin: 35px 0;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 6px 25px rgba(0,0,0,0.1);
  position: relative;
}

.responsive-img-opt {
  width: 100%;
  height: auto;
  display: block;
}

.image-caption {
  background: linear-gradient(90deg, #f8f9fa, #fafafa);
  padding: 16px 20px;
  font-size: 0.95rem;
  color: #666;
  text-align: center;
  border-top: 1px solid #e0e0e0;
  margin: 0;
}

/* コンパクトエフェクター */
.compact-effector-list {
  background: white;
  border-radius: 10px;
  padding: 25px;
  margin: 25px 0;
}

.compact-item {
  padding: 20px;
  border-bottom: 1px solid #e0e0e0;
  transition: background 0.3s ease;
}

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

.compact-item:hover {
  background: #fafafa;
}

.compact-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.price-compact {
  background: #3498db;
  color: white;
  padding: 4px 12px;
  border-radius: 15px;
  font-size: 0.85rem;
  font-weight: 600;
}

.compact-desc {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
}

.genre-tag {
  background: #e3f2fd;
  color: #3498db;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
}

.emphasis-text {
  color: #8e44ad;
  font-weight: 600;
}

/* エフェクターアドバイスボックス */
.effector-advice-box {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  background: linear-gradient(135deg, #fff8f0 0%, #fffef8 100%);
  padding: 25px;
  border-radius: 12px;
  margin-top: 30px;
  border: 1px solid rgba(255, 152, 0, 0.2);
}

.advice-icon {
  font-size: 1.8rem;
  margin: 0;
}

.advice-content {
  flex: 1;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin: 0;
}

/* レコーダーセクション */
.recorder-options {
  margin-top: 35px;
}

.recorder-type {
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
  padding: 35px;
  border-radius: 14px;
  margin-bottom: 30px;
}

.handy-recorder {
  border-left: 4px solid #e74c3c;
}

.audio-interface {
  border-left: 4px solid #2ecc71;
}

.recorder-type-title {
  font-size: 1.3rem;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.recorder-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #666;
  margin-bottom: 25px;
}

.recorder-products {
  display: grid;
  gap: 25px;
}

.recorder-product {
  background: white;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 3px 15px rgba(0,0,0,0.06);
  transition: all 0.3s ease;
}

.recorder-product:hover {
  transform: translateX(5px);
  box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.product-header-rec {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.price-rec {
  background: #e74c3c;
  color: white;
  padding: 5px 12px;
  border-radius: 15px;
  font-size: 0.85rem;
  font-weight: 600;
}

.product-detail {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
  margin-bottom: 15px;
}

.product-specs {
  list-style: none;
  padding: 0;
  margin: 0;
}

.product-specs li {
  padding: 8px 0 8px 20px;
  position: relative;
  font-size: 0.9rem;
  color: #777;
  line-height: 1.5;
}

.product-specs li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #27ae60;
  font-weight: bold;
}

/* インターフェース製品 */
.interface-products {
  background: white;
  padding: 20px;
  border-radius: 10px;
  margin-top: 20px;
}

.interface-product {
  padding: 15px 0;
  border-bottom: 1px solid #e0e0e0;
}

.interface-product:last-child {
  border-bottom: none;
}

.product-header-int {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.price-int {
  background: #2ecc71;
  color: white;
  padding: 4px 12px;
  border-radius: 15px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* 録音のメリットボックス */
.recording-benefit-box {
  background: linear-gradient(135deg, #ffe0e0 0%, #fff5f5 100%);
  padding: 30px;
  border-radius: 14px;
  margin-top: 35px;
  border-left: 4px solid #e74c3c;
}

.benefit-title {
  font-size: 1.3rem;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.benefit-text {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
}

/* 譜面台セクション */
.music-stand-types {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  margin: 30px 0;
}

.stand-product-card {
  background: white;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
  border: 1px solid #e0e0e0;
}

.stand-product-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 25px rgba(0,0,0,0.12);
  border-color: #9b59b6;
}

.stand-product-card.portable {
  background: linear-gradient(135deg, #f0f8ff 0%, #e8f4fd 100%);
  border-color: #3498db;
}

.stand-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

.stand-name {
  color: #2c3e50;
  font-size: 1.15rem;
}

.stand-price {
  background: #8e44ad;
  color: white;
  padding: 5px 12px;
  border-radius: 15px;
  font-size: 0.85rem;
  font-weight: 600;
}

.stand-description {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
  margin-bottom: 20px;
}

.stand-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.feature-item {
  background: #f4e8ff;
  color: #8e44ad;
  padding: 5px 12px;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* 著者経験ボックス */
.author-experience-box {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  background: linear-gradient(135deg, #e8f5e9 0%, #f1f8e9 100%);
  padding: 25px;
  border-radius: 12px;
  margin-top: 30px;
  border: 1px solid rgba(46, 204, 113, 0.2);
}

.experience-icon {
  font-size: 1.8rem;
  margin: 0;
}

.experience-content {
  flex: 1;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin: 0;
}

/* フットスツールセクション */
.footstool-products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  margin: 30px 0;
}

.footstool-card {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  border: 1px solid #e0e0e0;
  transition: all 0.3s ease;
}

.footstool-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 25px rgba(0,0,0,0.12);
  border-color: #ff6b35;
}

.footstool-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
}

.footstool-price {
  background: #ff6b35;
  color: white;
  padding: 5px 12px;
  border-radius: 15px;
  font-size: 0.85rem;
  font-weight: 600;
}

.footstool-desc {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
  margin-bottom: 20px;
}

.footstool-features {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footstool-features li {
  padding: 8px 0;
  font-size: 0.9rem;
  color: #777;
  position: relative;
  padding-left: 20px;
}

.footstool-features li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: #ff6b35;
  font-weight: bold;
  font-size: 1.2rem;
}

/* フットスツール効果ボックス */
.footstool-benefit-box {
  background: linear-gradient(135deg, #fff8f0 0%, #ffe8d6 100%);
  padding: 30px;
  border-radius: 14px;
  margin-top: 35px;
  border-left: 4px solid #ff6b35;
}

.benefit-title-fs {
  font-size: 1.3rem;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.benefit-content-fs {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555;
  margin-bottom: 25px;
}

.posture-tips {
  background: white;
  padding: 20px;
  border-radius: 10px;
  margin-top: 20px;
}

.tips-title {
  font-size: 1.1rem;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.posture-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.posture-list li {
  padding: 10px 0 10px 25px;
  position: relative;
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
  border-bottom: 1px solid #f0f0f0;
}

.posture-list li:last-child {
  border-bottom: none;
}

.posture-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: #ff6b35;
  font-weight: bold;
}

/* 全体まとめセクション */
.optional-summary-section {
  background: linear-gradient(135deg, #faf5ff 0%, #f0e8ff 100%);
  padding: 45px;
  border-radius: 18px;
  margin-top: 60px;
  box-shadow: 0 5px 25px rgba(155, 89, 182, 0.1);
  border: 1px solid rgba(155, 89, 182, 0.15);
}

.summary-content {
  max-width: 900px;
  margin: 0 auto;
}

.summary-title {
  font-size: 1.8rem;
  color: #2c3e50;
  margin-bottom: 25px;
  text-align: center;
  font-weight: 700;
}

.summary-text {
  font-size: 1.15rem;
  line-height: 1.8;
  color: #555;
  margin-bottom: 35px;
  text-align: center;
}

.style-recommendations {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin: 35px 0;
}

.style-item {
  background: white;
  padding: 25px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 3px 15px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
}

.style-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(0,0,0,0.12);
}

.style-title {
  font-size: 1.2rem;
  color: #8e44ad;
  margin-bottom: 12px;
  font-weight: 600;
}

.style-item p {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
  margin: 0;
}

.final-message {
  font-size: 1.15rem;
  line-height: 1.8;
  color: #555;
  text-align: center;
  margin-top: 30px;
  padding-top: 30px;
  border-top: 2px solid rgba(155, 89, 182, 0.2);
}

.emphasis-final {
  color: #9b59b6;
  font-weight: 700;
  background: linear-gradient(transparent 65%, rgba(155, 89, 182, 0.15) 65%);
  padding: 0 5px;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
  .optional-accessories-section-gtr2025 {
    padding: 50px 0;
  }
  
  .section-title-optional-acc {
    font-size: 2rem;
  }
  
  .sub-title-optional-h5 {
    font-size: 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  
  .icon-wrapper-opt {
    width: 45px;
    height: 45px;
    font-size: 1.8rem;
  }
  
  .accessory-optional-block {
    padding: 30px;
    margin-bottom: 45px;
  }
  
  .effector-products-grid,
  .music-stand-types,
  .footstool-products,
  .style-recommendations {
    grid-template-columns: 1fr;
  }
  
  .lead-text-optional {
    font-size: 1.15rem;
  }
  
  .description-text-opt {
    font-size: 1.05rem;
  }
  
  .optional-summary-section {
    padding: 30px;
  }
  
  .summary-title {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .container-optional-acc-wrapper {
    padding: 0 15px;
  }
  
  .section-title-optional-acc {
    font-size: 1.7rem;
    margin-bottom: 30px;
  }
  
  .sub-title-optional-h5 {
    font-size: 1.3rem;
  }
  
  .intro-text-optional-box {
    padding: 25px;
    margin-bottom: 35px;
  }
  
  .accessory-optional-block {
    padding: 25px;
    border-radius: 12px;
  }
  
  .effector-type,
  .recorder-type {
    padding: 25px;
  }
  
  .type-title-eff,
  .recorder-type-title,
  .benefit-title,
  .benefit-title-fs {
    font-size: 1.15rem;
  }
  
  .effector-advice-box,
  .recording-benefit-box,
  .author-experience-box,
  .footstool-benefit-box {
    padding: 20px;
    flex-direction: column;
    gap: 10px;
  }
  
  .image-placeholder-full-width {
    margin: 25px 0;
  }
  
  .product-header-rec,
  .product-header-int,
  .stand-header,
  .footstool-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  
  .product-name-eff,
  .stand-name {
    font-size: 1rem;
  }
  
  .optional-summary-section {
    padding: 25px;
    margin-top: 40px;
  }
  
  .style-item {
    padding: 20px;
  }
  
  .style-title {
    font-size: 1.1rem;
  }
}

/* アニメーション控えめ設定 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* プリント対応 */
@media print {
  .optional-accessories-section-gtr2025 {
    background: white;
    padding: 20px 0;
  }
  
  .accessory-optional-block {
    box-shadow: none;
    border: 1px solid #ddd;
    page-break-inside: avoid;
  }
  
  .icon-wrapper-opt {
    background: none;
    border: 2px solid #333;
  }
  
  .image-placeholder-full-width {
    page-break-inside: avoid;
  }
}


/* ========================================
   アクセサリー選びのポイント セクション
   ======================================== */

.accessory-selection-point-section-gtr2025 {
  padding: 80px 0;
  background: linear-gradient(180deg, #fafafa 0%, #ffffff 50%, #f8f9fa 100%);
  position: relative;
  overflow: hidden;
}

.accessory-selection-point-section-gtr2025::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #f7931e, #ffd700, #f7931e);
  background-size: 200% 100%;
}

.accessory-selection-point-section-gtr2025::after {
  content: '';
  position: absolute;
  bottom: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(247, 147, 30, 0.05) 0%, transparent 70%);
  border-radius: 50%;
}

.container-selection-point-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* メインタイトル */
.section-title-selection-point {
  font-size: 2.5rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 45px;
  text-align: center;
  position: relative;
  padding-bottom: 25px;
}

.section-title-selection-point::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 150px;
  height: 4px;
  background: linear-gradient(90deg, #f7931e, #ffd700);
  border-radius: 2px;
}

/* イントロテキスト */
.intro-text-selection-box {
  text-align: center;
  margin-bottom: 55px;
  padding: 35px;
  background: linear-gradient(135deg, #fffef8 0%, #fff8f0 100%);
  border-radius: 16px;
  box-shadow: 0 4px 25px rgba(247, 147, 30, 0.08);
  border: 1px solid rgba(247, 147, 30, 0.1);
}

.lead-text-selection {
  font-size: 1.3rem;
  line-height: 1.9;
  color: #555;
  margin: 0;
}

.highlight-text-gold {
  color: #f7931e;
  font-weight: 700;
  background: linear-gradient(transparent 70%, rgba(255, 215, 0, 0.3) 70%);
  padding: 0 5px;
}

.highlight-important {
  color: #e74c3c;
  font-weight: 700;
  background: linear-gradient(transparent 70%, rgba(231, 76, 60, 0.15) 70%);
  padding: 0 4px;
}

.highlight-trust {
  color: #27ae60;
  font-weight: 700;
  background: linear-gradient(transparent 70%, rgba(39, 174, 96, 0.15) 70%);
  padding: 0 4px;
}

/* セレクションポイントブロック */
.selection-point-block {
  margin-bottom: 65px;
  background: white;
  border-radius: 20px;
  padding: 50px;
  box-shadow: 0 8px 35px rgba(0,0,0,0.08);
  border: 1px solid rgba(0,0,0,0.03);
  transition: all 0.4s ease;
  position: relative;
}

.selection-point-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(180deg, #f7931e, #ffd700);
  border-radius: 20px 0 0 20px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.selection-point-block:hover::before {
  opacity: 1;
}

.selection-point-block:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 45px rgba(0,0,0,0.12);
}

/* サブタイトル H5 */
.sub-title-selection-h5 {
  font-size: 1.9rem;
  color: #2c3e50;
  margin-bottom: 35px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding-bottom: 20px;
  border-bottom: 2px solid #fff4e6;
}

.icon-wrapper-sel {
  font-size: 2.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #f7931e, #ffd700);
  border-radius: 16px;
  box-shadow: 0 5px 20px rgba(247, 147, 30, 0.3);
}

/* コンテンツラッパー */
.content-wrapper-budget,
.content-wrapper-brand {
  padding-top: 25px;
}

.description-text-sel {
  font-size: 1.15rem;
  line-height: 1.9;
  color: #555;
  margin-bottom: 35px;
}

/* 優先順位ガイド */
.priority-guide-container {
  margin-top: 40px;
}

.guide-title-priority {
  font-size: 1.5rem;
  color: #2c3e50;
  margin-bottom: 30px;
  text-align: center;
  font-weight: 600;
  position: relative;
}

.guide-title-priority::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 2px;
  background: #f7931e;
}

/* 優先度レベル */
.priority-levels {
  display: flex;
  flex-direction: column;
  gap: 35px;
  margin-top: 40px;
}

.priority-level {
  background: linear-gradient(135deg, #ffffff 0%, #fafafa 100%);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  border: 1px solid #e0e0e0;
  transition: all 0.3s ease;
}

.priority-level:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(0,0,0,0.1);
}

.level-1 {
  border-left: 5px solid #e74c3c;
}

.level-2 {
  border-left: 5px solid #f7931e;
}

.level-3 {
  border-left: 5px solid #3498db;
}

.level-header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 25px 30px;
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
  border-bottom: 1px solid #e0e0e0;
}

.level-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  background: linear-gradient(135deg, #f7931e, #ffd700);
  color: white;
  font-size: 1.4rem;
  font-weight: 700;
  border-radius: 50%;
  box-shadow: 0 3px 10px rgba(247, 147, 30, 0.3);
}

.level-title {
  font-size: 1.3rem;
  color: #2c3e50;
  margin: 0;
  font-weight: 600;
}

.level-content {
  padding: 30px;
}

.level-desc {
  font-size: 1.05rem;
  color: #666;
  line-height: 1.7;
  margin-bottom: 25px;
}

/* 優先アイテムリスト */
.priority-items {
  list-style: none;
  padding: 0;
  margin: 0 0 25px 0;
}

.priority-item {
  background: white;
  padding: 20px;
  border-radius: 10px;
  margin-bottom: 15px;
  border: 1px solid #e8e8e8;
  transition: all 0.3s ease;
  position: relative;
  padding-left: 35px;
}

.priority-item::before {
  content: '▸';
  position: absolute;
  left: 15px;
  top: 22px;
  color: #f7931e;
  font-size: 1.2rem;
  font-weight: 700;
}

.priority-item:hover {
  background: #fffef8;
  border-color: #f7931e;
  transform: translateX(3px);
}

.priority-item strong {
  color: #2c3e50;
  font-size: 1.1rem;
  display: inline-block;
  margin-bottom: 5px;
}

.price-range {
  display: inline-block;
  background: #27ae60;
  color: white;
  padding: 3px 10px;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-left: 10px;
}

.priority-item p {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
  margin: 8px 0 0 0;
}

/* 予算サマリー */
.budget-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, #fff8f0 0%, #fffef8 100%);
  padding: 20px 25px;
  border-radius: 10px;
  margin-top: 20px;
  border: 1px solid rgba(247, 147, 30, 0.2);
}

.summary-label {
  font-size: 1.1rem;
  color: #555;
  font-weight: 600;
}

.summary-amount {
  font-size: 1.3rem;
  color: #f7931e;
  font-weight: 700;
}

/* 画像プレースホルダー */
.image-placeholder-full-width {
  width: 100%;
  margin: 40px 0;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

.responsive-img-sel {
  width: 100%;
  height: auto;
  display: block;
}

.image-caption {
  background: linear-gradient(90deg, #f8f9fa, #fafafa);
  padding: 18px 20px;
  font-size: 0.95rem;
  color: #666;
  text-align: center;
  border-top: 1px solid #e0e0e0;
  margin: 0;
}

/* 予算計画ボックス */
.budget-planning-box {
  background: linear-gradient(135deg, #e8f5e9 0%, #f1f8e9 100%);
  padding: 35px;
  border-radius: 16px;
  margin-top: 40px;
  border: 1px solid rgba(46, 204, 113, 0.2);
}

.planning-title {
  font-size: 1.4rem;
  color: #2c3e50;
  margin-bottom: 20px;
  font-weight: 600;
}

.planning-content {
  font-size: 1.05rem;
  line-height: 1.8;
}

.planning-text {
  color: #555;
  margin-bottom: 25px;
}

.emphasis-gold {
  color: #f7931e;
  font-weight: 700;
}

/* 節約ティップス */
.savings-tips {
  background: white;
  padding: 25px;
  border-radius: 12px;
  margin-top: 25px;
}

.tips-subtitle {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 600;
}

.savings-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.savings-list li {
  padding: 12px 0 12px 30px;
  position: relative;
  font-size: 1rem;
  color: #666;
  line-height: 1.7;
  border-bottom: 1px solid #f0f0f0;
}

.savings-list li:last-child {
  border-bottom: none;
}

.savings-list li::before {
  content: '💡';
  position: absolute;
  left: 0;
}

/* ブランドセクション */
.trusted-brands-container {
  margin-top: 40px;
}

.brands-title {
  font-size: 1.5rem;
  color: #2c3e50;
  margin-bottom: 30px;
  text-align: center;
  font-weight: 600;
  position: relative;
}

.brands-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 2px;
  background: linear-gradient(90deg, #f7931e, #ffd700);
}

/* ブランドカテゴリー */
.brand-categories {
  display: grid;
  gap: 35px;
  margin-top: 40px;
}

.brand-category {
  background: #f8f9fa;
  padding: 30px;
  border-radius: 14px;
  border-left: 4px solid #f7931e;
}

.category-title {
  font-size: 1.3rem;
  color: #2c3e50;
  margin-bottom: 20px;
  font-weight: 600;
}

.brand-list {
  display: grid;
  gap: 20px;
}

.brand-item {
  background: white;
  padding: 20px;
  border-radius: 10px;
  transition: all 0.3s ease;
  position: relative;
}

.brand-item:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.brand-name {
  color: #2c3e50;
  font-size: 1.15rem;
  display: block;
  margin-bottom: 8px;
}

.brand-desc {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
  margin: 0 0 10px 0;
}

.brand-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 15px;
  font-size: 0.75rem;
  font-weight: 600;
  position: absolute;
  top: 20px;
  right: 20px;
}

.brand-badge:nth-of-type(1) {
  background: #e3f2fd;
  color: #3498db;
}

.brand-item:nth-child(2) .brand-badge {
  background: #fce4ec;
  color: #e91e63;
}

.brand-item:nth-child(3) .brand-badge {
  background: #f3e5f5;
  color: #9c27b0;
}

.brand-item:nth-child(4) .brand-badge {
  background: #e8f5e9;
  color: #27ae60;
}

/* ブランド選びティップス */
.brand-selection-tips {
  background: linear-gradient(135deg, #f0f8ff 0%, #e8f4fd 100%);
  padding: 35px;
  border-radius: 16px;
  margin-top: 40px;
  border: 1px solid rgba(52, 152, 219, 0.2);
}

.tips-title {
  font-size: 1.4rem;
  color: #2c3e50;
  margin-bottom: 20px;
  font-weight: 600;
}

.tips-content {
  font-size: 1.05rem;
  line-height: 1.8;
}

.tips-text {
  color: #555;
  margin-bottom: 25px;
}

/* チェックポイント */
.check-points {
  list-style: none;
  padding: 0;
  margin: 0;
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 20px;
  background: white;
  border-radius: 10px;
  margin-bottom: 15px;
  transition: all 0.3s ease;
}

.check-item:hover {
  transform: translateX(3px);
  box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

.check-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: #27ae60;
  color: white;
  border-radius: 50%;
  font-weight: 700;
  flex-shrink: 0;
}

.check-content strong {
  color: #2c3e50;
  display: block;
  margin-bottom: 5px;
}

.check-content p {
  font-size: 0.95rem;
  color: #666;
  margin: 0;
}

/* 避けたい失敗ボックス */
.avoid-mistakes-box {
  background: linear-gradient(135deg, #ffe0e0 0%, #fff5f5 100%);
  padding: 35px;
  border-radius: 16px;
  margin-top: 40px;
  border: 1px solid rgba(231, 76, 60, 0.2);
}

.mistakes-title {
  font-size: 1.4rem;
  color: #e74c3c;
  margin-bottom: 20px;
  font-weight: 600;
}

.mistakes-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mistake-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 15px 0;
  border-bottom: 1px solid rgba(231, 76, 60, 0.1);
}

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

.mistake-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.mistake-item p {
  font-size: 1rem;
  color: #555;
  line-height: 1.7;
  margin: 0;
}

/* 最終まとめセクション */
.final-summary-section {
  background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
  padding: 60px 40px;
  border-radius: 20px;
  margin-top: 70px;
  color: white;
  position: relative;
  overflow: hidden;
}

.final-summary-section::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.summary-wrapper {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.final-title {
  font-size: 2rem;
  margin-bottom: 30px;
  text-align: center;
  font-weight: 700;
}

.final-message-box {
  background: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 14px;
  margin-bottom: 40px;
  backdrop-filter: blur(5px);
}

.final-message {
  font-size: 1.15rem;
  line-height: 1.9;
  margin-bottom: 20px;
}

.final-advice {
  font-size: 1.1rem;
  line-height: 1.8;
}

.emphasis-final {
  color: #ffd700;
  font-weight: 700;
}

/* CTAセクション */
.cta-section {
  background: linear-gradient(135deg, #f7931e 0%, #ffd700 100%);
  padding: 40px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

.cta-title {
  font-size: 1.6rem;
  color: white;
  margin-bottom: 20px;
  font-weight: 700;
}

.cta-text {
  font-size: 1.1rem;
  color: white;
  line-height: 1.8;
  margin-bottom: 30px;
}

.cta-button-wrapper {
  display: inline-block;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 15px;
  background: white;
  color: #f7931e;
  padding: 18px 35px;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
  background: #fffef8;
}

.button-text {
  display: inline-block;
}

.button-arrow {
  font-size: 1.3rem;
  display: inline-block;
  transition: transform 0.3s ease;
}

.cta-button:hover .button-arrow {
  transform: translateX(5px);
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
  .accessory-selection-point-section-gtr2025 {
    padding: 50px 0;
  }
  
  .section-title-selection-point {
    font-size: 2rem;
  }
  
  .sub-title-selection-h5 {
    font-size: 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  
  .icon-wrapper-sel {
    width: 50px;
    height: 50px;
    font-size: 1.8rem;
  }
  
  .selection-point-block {
    padding: 30px;
    margin-bottom: 45px;
  }
  
  .priority-level {
    margin-bottom: 25px;
  }
  
  .level-header {
    padding: 20px;
    flex-wrap: wrap;
  }
  
  .level-content {
    padding: 20px;
  }
  
  .final-summary-section {
    padding: 40px 25px;
    border-radius: 15px;
  }
  
  .final-title {
    font-size: 1.6rem;
  }
  
  .cta-section {
    padding: 30px 25px;
  }
  
  .cta-title {
    font-size: 1.4rem;
  }
}

@media (max-width: 480px) {
  .container-selection-point-wrapper {
    padding: 0 15px;
  }
  
  .section-title-selection-point {
    font-size: 1.7rem;
    margin-bottom: 30px;
  }
  
  .sub-title-selection-h5 {
    font-size: 1.3rem;
  }
  
  .intro-text-selection-box {
    padding: 25px;
    margin-bottom: 35px;
  }
  
  .selection-point-block {
    padding: 25px;
    border-radius: 12px;
  }
  
  .guide-title-priority,
  .brands-title,
  .planning-title,
  .tips-title,
  .mistakes-title {
    font-size: 1.2rem;
  }
  
  .level-header {
    gap: 15px;
  }
  
  .level-number {
    width: 35px;
    height: 35px;
    font-size: 1.1rem;
  }
  
  .level-title {
    font-size: 1.1rem;
  }
  
  .budget-summary {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
  
  .brand-category {
    padding: 20px;
  }
  
  .brand-item {
    padding: 15px;
  }
  
  .brand-badge {
    position: static;
    margin-top: 10px;
  }
  
  .final-summary-section {
    padding: 30px 20px;
    margin-top: 50px;
  }
  
  .final-message-box {
    padding: 20px;
  }
  
  .cta-section {
    padding: 25px 20px;
  }
  
  .cta-button {
    padding: 15px 25px;
    font-size: 1rem;
  }
}

/* アニメーション控えめ設定 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* プリント対応 */
@media print {
  .accessory-selection-point-section-gtr2025 {
    background: white;
    padding: 20px 0;
  }
  
  .selection-point-block {
    box-shadow: none;
    border: 1px solid #ddd;
    page-break-inside: avoid;
  }
  
  .icon-wrapper-sel {
    background: none;
    border: 2px solid #333;
  }
  
  .final-summary-section {
    background: #f0f0f0;
    color: #333;
  }
  
  .cta-section {
    background: #f8f8f8;
    color: #333;
  }
  
  .cta-button {
    border: 2px solid #333;
    color: #333;
  }
}



/* ===================================
   チューニング方法セクション - メインスタイル
   2025年最新 SEO最適化デザイン
=================================== */

/* セクション全体のベーススタイル */
.tuning-method-section-2025 {
  background: linear-gradient(180deg, #fafafa 0%, #ffffff 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.tuning-method-section-2025::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, #e5e5e5 50%, transparent 100%);
}

/* コンテナラッパー */
.tuning-container-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
}

/* メインヘッダーブロック */
.tuning-main-header-block {
  margin-bottom: 60px;
  text-align: center;
  animation: fadeInUp 0.6s ease-out;
}

/* H3セクションタイトル */
.tuning-section-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  color: #1a1a1a;
  margin-bottom: 30px;
  letter-spacing: 0.5px;
  position: relative;
  display: inline-block;
  padding-bottom: 20px;
}

.tuning-section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, #ff6b35 0%, #f7931e 100%);
  border-radius: 2px;
}

/* イントロコンテンツ */
.tuning-intro-content {
  max-width: 900px;
  margin: 0 auto;
}

.tuning-lead-text {
  font-size: 18px;
  line-height: 1.8;
  color: #333333;
  margin-bottom: 20px;
  font-weight: 400;
}

.tuning-experience-story {
  font-size: 16px;
  line-height: 1.8;
  color: #555555;
  background: #f8f9fa;
  padding: 20px 30px;
  border-radius: 8px;
  border-left: 3px solid #ff6b35;
  margin-top: 20px;
}

/* 強調・ハイライトスタイル */
.highlight-important {
  color: #ff6b35;
  font-weight: 700;
  background: linear-gradient(180deg, transparent 60%, rgba(255, 107, 53, 0.1) 60%);
  padding: 0 4px;
}

.emphasis-text {
  color: #2563eb;
  font-weight: 700;
  font-size: 1.05em;
}

.color-accent {
  color: #f7931e;
  font-weight: 600;
}

/* アーティクル（H4セクション）共通スタイル */
.tuning-importance-article,
.standard-tuning-article,
.tuner-method-article,
.relative-tuning-article,
.harmonics-tuning-article,
.tuning-problems-article,
.various-tuning-article,
.tuning-habit-article,
.tuning-summary-article {
  background: #ffffff;
  border-radius: 16px;
  padding: 50px 40px;
  margin-bottom: 40px;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* H4ヘッダーラッパー */
.h4-header-wrapper {
  margin-bottom: 35px;
  position: relative;
}

/* H4タイトルスタイル */
.tuning-h4-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: #1a1a1a;
  display: flex;
  align-items: center;
  gap: 15px;
  position: relative;
  padding-bottom: 15px;
}

.tuning-h4-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, #e5e5e5 0%, transparent 100%);
}

.h4-number {
  background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
  color: #ffffff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}

/* チューニング問題リスト */
.tuning-problems-list {
  list-style: none;
  padding: 0;
  margin: 30px 0;
  background: #f8f9fa;
  border-radius: 12px;
  padding: 25px 30px;
}

.problem-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 15px;
  font-size: 16px;
  line-height: 1.6;
}

.problem-item:last-child {
  margin-bottom: 0;
}

.problem-icon {
  font-size: 20px;
  margin-right: 12px;
  flex-shrink: 0;
}

.problem-text {
  color: #333333;
  flex: 1;
}

/* 講師コメントボックス */
.teacher-comment-box {
  background: linear-gradient(135deg, #fff4f0 0%, #fffaf6 100%);
  border-radius: 12px;
  padding: 25px;
  margin: 30px 0;
  border: 1px solid rgba(255, 107, 53, 0.1);
  position: relative;
}

.teacher-voice {
  font-size: 16px;
  line-height: 1.7;
  color: #333333;
  font-style: italic;
}

.student-feedback {
  color: #ff6b35;
  font-weight: 600;
}

/* 弦表示スタイル */
.tuning-strings-display {
  display: grid;
  gap: 15px;
  margin: 30px 0;
  background: #f8f9fa;
  padding: 30px;
  border-radius: 12px;
}

.string-item {
  display: grid;
  grid-template-columns: 80px 120px 1fr;
  align-items: center;
  padding: 15px;
  background: #ffffff;
  border-radius: 8px;
  border-left: 3px solid #ff6b35;
  transition: transform 0.2s ease;
}

.string-item:hover {
  transform: translateX(5px);
}

.string-number {
  font-weight: 700;
  color: #1a1a1a;
  font-size: 16px;
}

.string-note {
  font-size: 24px;
  font-weight: 800;
  color: #ff6b35;
}

.string-desc {
  font-size: 14px;
  color: #666666;
}

/* H5セクションスタイル */
.h5-section {
  margin: 35px 0;
  padding-left: 20px;
  border-left: 3px solid rgba(255, 107, 53, 0.2);
}

.h5-title {
  font-size: 20px;
  font-weight: 600;
  color: #1a1a1a;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
}

.h5-content {
  color: #444444;
  line-height: 1.8;
  font-size: 16px;
}

/* チューニングステータスガイド */
.tuning-status-guide {
  margin: 30px 0;
  display: grid;
  gap: 20px;
}

.status-item {
  background: #ffffff;
  border-radius: 10px;
  padding: 20px;
  border: 1px solid #e5e5e5;
  transition: border-color 0.3s ease;
}

.status-item.low {
  border-left: 4px solid #dc2626;
}

.status-item.high {
  border-left: 4px solid #2563eb;
}

.status-item.perfect {
  border-left: 4px solid #16a34a;
  background: #f0fdf4;
}

.status-label {
  font-weight: 700;
  color: #1a1a1a;
  display: block;
  margin-bottom: 10px;
  font-size: 16px;
}

.green-indicator {
  color: #16a34a;
  font-weight: 700;
}

/* プロティップボックス */
.pro-tip-box {
  background: linear-gradient(135deg, #f0f9ff 0%, #e6f7ff 100%);
  border-radius: 12px;
  padding: 25px;
  margin: 30px 0;
  border: 1px solid rgba(37, 99, 235, 0.1);
  position: relative;
}

.pro-tip-box::before {
  content: '💡';
  position: absolute;
  top: -10px;
  left: 20px;
  font-size: 24px;
  background: #ffffff;
  padding: 0 10px;
}

.pro-tip-text {
  font-size: 16px;
  line-height: 1.7;
  color: #333333;
}

.tip-emphasis {
  color: #2563eb;
  font-weight: 600;
}

/* 安定化テクニック */
.stabilization-techniques {
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

.stabilization-techniques li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 12px;
  font-size: 16px;
  color: #444444;
}

.stabilization-techniques li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #16a34a;
  font-weight: 700;
  font-size: 18px;
}

/* 相対チューニングステップ */
.relative-tuning-steps {
  counter-reset: step-counter;
  list-style: none;
  padding: 0;
  margin: 30px 0;
}

.step-item {
  margin-bottom: 25px;
  padding: 20px;
  background: #f8f9fa;
  border-radius: 10px;
  position: relative;
  padding-left: 60px;
  transition: background-color 0.3s ease;
}

.step-item:hover {
  background: #f3f4f6;
}

.step-number {
  position: absolute;
  left: 20px;
  top: 20px;
  background: #ff6b35;
  color: #ffffff;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}

/* 重要な注意ボックス */
.important-note-box {
  background: #fef2f2;
  border: 2px solid #fecaca;
  border-radius: 12px;
  padding: 20px;
  margin: 30px 0;
  position: relative;
}

.note-text {
  color: #991b1b;
  font-size: 16px;
  line-height: 1.6;
}

.caution-emphasis {
  color: #dc2626;
  font-weight: 700;
  font-size: 1.05em;
}

/* 解決法ボックス */
.solution-box {
  background: #f0fdf4;
  border-radius: 10px;
  padding: 20px;
  margin: 20px 0;
}

.solution-label {
  display: block;
  font-weight: 700;
  color: #16a34a;
  margin-bottom: 15px;
  font-size: 18px;
}

.solution-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.solution-list li {
  position: relative;
  padding-left: 25px;
  margin-bottom: 12px;
  color: #333333;
  line-height: 1.6;
}

.solution-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: #16a34a;
  font-weight: 700;
}

/* 問題タイトル */
.problem-title {
  color: #dc2626;
  background: #fef2f2;
  padding: 10px 20px;
  border-radius: 8px;
  display: inline-block;
  margin-bottom: 20px;
}

/* 画像コンテナ */
.tuning-image-container {
  margin: 40px 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.tuning-full-width-img {
  width: 100%;
  height: auto;
  display: block;
}

.image-caption {
  background: #1a1a1a;
  color: #ffffff;
  padding: 15px 20px;
  text-align: center;
  font-size: 14px;
  font-weight: 500;
  margin: 0;
}

/* CTAボックス */
.cta-box-tuning {
  background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
  border-radius: 16px;
  padding: 40px;
  margin-top: 50px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
}

.cta-text {
  color: #ffffff;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 25px;
  line-height: 1.6;
}

.cta-button-tuning {
  display: inline-block;
  background: #ffffff;
  color: #ff6b35;
  padding: 15px 40px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.cta-button-tuning:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* その他の強調スタイル */
.memorize-highlight {
  background: #fef3c7;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  color: #92400e;
}

.mode-highlight {
  color: #2563eb;
  font-weight: 600;
}

.special-note {
  background: #fee2e2;
  padding: 2px 8px;
  border-radius: 4px;
  color: #dc2626;
  font-weight: 700;
}

.sound-description {
  color: #7c3aed;
  font-style: italic;
  font-weight: 500;
}

.technique-point {
  color: #059669;
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(5, 150, 105, 0.3);
  text-underline-offset: 3px;
}

.advantage-highlight {
  background: linear-gradient(180deg, transparent 60%, rgba(34, 197, 94, 0.2) 60%);
  padding: 0 4px;
  font-weight: 600;
}

.period-highlight {
  color: #ea580c;
  font-weight: 700;
}

.time-emphasis {
  color: #dc2626;
  font-weight: 700;
  font-size: 1.05em;
}

.routine-emphasis {
  color: #2563eb;
  font-weight: 700;
  background: #eff6ff;
  padding: 2px 8px;
  border-radius: 4px;
}

.check-interval {
  color: #f59e0b;
  font-weight: 600;
}

.skill-improvement {
  color: #7c3aed;
  font-weight: 600;
}

.student-progress {
  color: #16a34a;
  font-style: italic;
  font-weight: 500;
}

.wait-time {
  color: #0891b2;
  font-weight: 600;
}

.time-required {
  color: #16a34a;
  font-weight: 700;
  font-size: 1.05em;
}

.core-message {
  font-size: 1.1em;
  color: #dc2626;
  text-shadow: 0 1px 2px rgba(220, 38, 38, 0.1);
}

/* 環境状況リスト */
.environment-situations {
  list-style: none;
  padding: 0;
  margin: 20px 0;
  background: #f8f9fa;
  padding: 25px;
  border-radius: 10px;
}

.environment-situations li {
  position: relative;
  padding-left: 25px;
  margin-bottom: 12px;
  color: #444444;
  line-height: 1.6;
}

.environment-situations li::before {
  content: '▶';
  position: absolute;
  left: 0;
  color: #f59e0b;
  font-size: 12px;
}

/* 教育経験ボックス */
.teaching-experience {
  background: #faf5ff;
  border-left: 4px solid #7c3aed;
  padding: 20px;
  margin: 25px 0;
  border-radius: 0 8px 8px 0;
}

/* レファレンスソースリスト */
.reference-sources {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
  margin: 25px 0;
}

.reference-sources li {
  background: #ffffff;
  border: 1px solid #e5e5e5;
  padding: 15px;
  border-radius: 8px;
  list-style: none;
  position: relative;
  padding-left: 35px;
  transition: border-color 0.3s ease;
}

.reference-sources li:hover {
  border-color: #ff6b35;
}

.reference-sources li::before {
  content: '🎵';
  position: absolute;
  left: 10px;
  font-size: 18px;
}

/* アニメーション定義（控えめ） */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* レスポンシブデザイン - タブレット */
@media screen and (max-width: 768px) {
  .tuning-method-section-2025 {
    padding: 60px 0;
  }
  
  .tuning-container-wrapper {
    padding: 0 15px;
  }
  
  .tuning-section-title {
    font-size: 32px;
  }
  
  .tuning-importance-article,
  .standard-tuning-article,
  .tuner-method-article,
  .relative-tuning-article,
  .harmonics-tuning-article,
  .tuning-problems-article,
  .various-tuning-article,
  .tuning-habit-article,
  .tuning-summary-article {
    padding: 35px 25px;
  }
  
  .tuning-h4-title {
    font-size: 24px;
  }
  
  .string-item {
    grid-template-columns: 60px 80px 1fr;
    padding: 12px;
  }
  
  .string-note {
    font-size: 20px;
  }
  
  .reference-sources {
    grid-template-columns: 1fr;
  }
  
  .cta-box-tuning {
    padding: 30px 20px;
  }
  
  .cta-text {
    font-size: 18px;
  }
  
  .cta-button-tuning {
    padding: 12px 30px;
    font-size: 16px;
  }
}

/* レスポンシブデザイン - モバイル */
@media screen and (max-width: 480px) {
  .tuning-method-section-2025 {
    padding: 40px 0;
  }
  
  .tuning-section-title {
    font-size: 28px;
    padding-bottom: 15px;
  }
  
  .tuning-lead-text {
    font-size: 16px;
  }
  
  .tuning-experience-story {
    font-size: 15px;
    padding: 15px 20px;
  }
  
  .tuning-importance-article,
  .standard-tuning-article,
  .tuner-method-article,
  .relative-tuning-article,
  .harmonics-tuning-article,
  .tuning-problems-article,
  .various-tuning-article,
  .tuning-habit-article,
  .tuning-summary-article {
    padding: 25px 15px;
    margin-bottom: 25px;
    border-radius: 12px;
  }
  
  .h4-header-wrapper {
    margin-bottom: 25px;
  }
  
  .tuning-h4-title {
    font-size: 20px;
    gap: 10px;
  }
  
  .h4-number {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }
  
  .tuning-strings-display {
    padding: 20px 15px;
    gap: 10px;
  }
  
  .string-item {
    grid-template-columns: 1fr;
    gap: 5px;
    padding: 12px;
  }
  
  .string-number {
    font-size: 14px;
  }
  
  .string-note {
    font-size: 18px;
  }
  
  .h5-section {
    margin: 25px 0;
    padding-left: 15px;
  }
  
  .h5-title {
    font-size: 18px;
  }
  
  .h5-content {
    font-size: 15px;
  }
  
  .teacher-comment-box,
  .pro-tip-box {
    padding: 20px 15px;
  }
  
  .tuning-problems-list {
    padding: 20px 15px;
  }
  
  .problem-item {
    font-size: 15px;
  }
  
  .step-item {
    padding: 15px;
    padding-left: 50px;
  }
  
  .step-number {
    left: 15px;
    top: 15px;
    width: 25px;
    height: 25px;
    font-size: 12px;
  }
  
  .solution-box {
    padding: 15px;
  }
  
  .cta-box-tuning {
    padding: 25px 15px;
    border-radius: 12px;
  }
  
  .cta-text {
    font-size: 16px;
    margin-bottom: 20px;
  }
  
  .cta-button-tuning {
    padding: 12px 25px;
    font-size: 15px;
    width: 100%;
    max-width: 280px;
  }
  
  .tuning-image-container {
    margin: 30px -15px;
    border-radius: 0;
  }
  
  .image-caption {
    font-size: 13px;
    padding: 12px 15px;
  }
}

/* 超小型デバイス対応 */
@media screen and (max-width: 360px) {
  .tuning-section-title {
    font-size: 24px;
  }
  
  .tuning-h4-title {
    font-size: 18px;
    flex-wrap: wrap;
  }
  
  .h4-number {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }
  
  .tuning-lead-text {
    font-size: 15px;
  }
  
  .h5-title {
    font-size: 16px;
  }
  
  .h5-content {
    font-size: 14px;
  }
}

/* プリント用スタイル */
@media print {
  .tuning-method-section-2025 {
    background: #ffffff;
  }
  
  .cta-box-tuning,
  .cta-button-tuning {
    display: none;
  }
  
  .tuning-importance-article,
  .standard-tuning-article,
  .tuner-method-article,
  .relative-tuning-article,
  .harmonics-tuning-article,
  .tuning-problems-article,
  .various-tuning-article,
  .tuning-habit-article,
  .tuning-summary-article {
    box-shadow: none;
    border: 1px solid #e5e5e5;
    page-break-inside: avoid;
  }
}

/* アクセシビリティ向上 */
@media (prefers-reduced-motion: reduce) {
  .tuning-main-header-block,
  .string-item,
  .step-item,
  .cta-button-tuning {
    animation: none;
    transition: none;
  }
}

/* ダークモード対応（オプション） */
@media (prefers-color-scheme: dark) {
  .tuning-method-section-2025 {
    background: linear-gradient(180deg, #1a1a1a 0%, #0f0f0f 100%);
  }
  
  .tuning-importance-article,
  .standard-tuning-article,
  .tuner-method-article,
  .relative-tuning-article,
  .harmonics-tuning-article,
  .tuning-problems-article,
  .various-tuning-article,
  .tuning-habit-article,
  .tuning-summary-article {
    background: #1f1f1f;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  }
  
  .tuning-section-title,
  .tuning-h4-title {
    color: #f5f5f5;
  }
  
  .tuning-lead-text,
  .h5-content,
  .problem-text,
  .teacher-voice {
    color: #e5e5e5;
  }
  
  .tuning-experience-story,
  .tuning-problems-list,
  .tuning-strings-display,
  .teacher-comment-box,
  .pro-tip-box {
    background: #2a2a2a;
  }
  
  .string-item {
    background: #1a1a1a;
    border-left-color: #ff6b35;
  }
  
  .status-item {
    background: #2a2a2a;
    border-color: #3a3a3a;
  }
}


/* ===================================
   基本コードの覚え方セクション - メインスタイル
   2025年最新 SEO最適化デザイン
=================================== */

/* セクション全体のベーススタイル */
.chord-mastery-section-2025-advanced {
  background: linear-gradient(180deg, #ffffff 0%, #fafafa 100%);
  padding: 90px 0;
  position: relative;
  overflow: hidden;
}

.chord-mastery-section-2025-advanced::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, #d4a574 25%, #8b6f47 50%, #d4a574 75%, transparent 100%);
}

/* コンテナラッパー */
.chord-container-ultimate-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
}

/* メインヘッダー */
.chord-main-header-supreme {
  text-align: center;
  margin-bottom: 70px;
  position: relative;
}

/* H3セクションタイトル */
.chord-section-primary-title {
  font-size: clamp(36px, 4.5vw, 52px);
  font-weight: 800;
  color: #1a1a1a;
  margin-bottom: 35px;
  letter-spacing: 0.8px;
  position: relative;
  display: inline-block;
  padding-bottom: 25px;
}

.chord-section-primary-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 5px;
  background: linear-gradient(90deg, #8b6f47 0%, #d4a574 50%, #8b6f47 100%);
  border-radius: 3px;
}

/* イントロダクション */
.chord-introduction-narrative {
  max-width: 920px;
  margin: 0 auto;
}

.chord-opening-statement,
.chord-concern-address,
.chord-chapter-purpose {
  font-size: 17px;
  line-height: 1.85;
  color: #333333;
  margin-bottom: 22px;
  text-align: left;
  background: #ffffff;
  padding: 20px 25px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
  border-left: 4px solid #d4a574;
}

/* 強調スタイル */
.harmony-highlight {
  color: #8b6f47;
  font-weight: 700;
  background: linear-gradient(180deg, transparent 70%, rgba(212, 165, 116, 0.15) 70%);
  padding: 0 5px;
}

.personal-experience {
  color: #6b5d54;
  font-style: italic;
  font-weight: 500;
}

.reassurance-text {
  color: #2c5530;
  font-weight: 800;
  font-size: 1.1em;
  text-shadow: 0 1px 2px rgba(44, 85, 48, 0.1);
}

.goal-emphasis {
  color: #d4a574;
  font-weight: 700;
  background: #faf6f0;
  padding: 2px 8px;
  border-radius: 4px;
}

/* アーティクル（H4セクション）共通スタイル */
.chord-basics-understanding-article,
.essential-chords-article,
.efficient-practice-article,
.chord-problems-article,
.chord-chart-article,
.chord-theory-article,
.practice-plan-article {
  background: #ffffff;
  border-radius: 18px;
  padding: 55px 45px;
  margin-bottom: 45px;
  box-shadow: 0 3px 25px rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(212, 165, 116, 0.1);
  transition: transform 0.2s ease;
}

/* H4ヘッダーラッパー */
.h4-chord-header-wrapper {
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 20px;
  border-bottom: 2px solid #f5f5f5;
}

/* H4タイトル */
.chord-h4-main-title {
  font-size: clamp(26px, 3.2vw, 34px);
  font-weight: 700;
  color: #1a1a1a;
  display: flex;
  align-items: center;
  gap: 18px;
}

.h4-chord-number {
  background: linear-gradient(135deg, #8b6f47 0%, #d4a574 100%);
  color: #ffffff;
  width: 45px;
  height: 45px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 3px 10px rgba(139, 111, 71, 0.2);
}

/* コード例表示グリッド */
.chord-examples-display-grid {
  display: grid;
  gap: 20px;
  margin: 35px 0;
  background: linear-gradient(135deg, #faf6f0 0%, #f8f5ee 100%);
  padding: 35px;
  border-radius: 15px;
  border: 1px solid rgba(212, 165, 116, 0.2);
}

.chord-example-item {
  display: grid;
  grid-template-columns: 150px 1fr auto;
  align-items: center;
  gap: 20px;
  padding: 18px;
  background: #ffffff;
  border-radius: 10px;
  transition: transform 0.15s ease;
  border-left: 5px solid #d4a574;
}

.chord-example-item:hover {
  transform: translateX(8px);
}

.chord-name-display {
  font-size: 22px;
  font-weight: 800;
  color: #8b6f47;
  text-align: center;
  background: #faf6f0;
  padding: 10px;
  border-radius: 8px;
}

.chord-structure {
  font-size: 16px;
  color: #555555;
  line-height: 1.6;
}

.chord-type-label {
  font-size: 14px;
  color: #ffffff;
  background: #6b5d54;
  padding: 6px 15px;
  border-radius: 20px;
  font-weight: 600;
  white-space: nowrap;
}

/* 理論安心ボックス */
.theory-reassurance-box {
  background: linear-gradient(135deg, #f0f8f1 0%, #e8f5e9 100%);
  border-radius: 12px;
  padding: 28px;
  margin: 30px 0;
  border: 2px solid rgba(44, 85, 48, 0.1);
  position: relative;
}

.theory-reassurance-box::before {
  content: '💭';
  position: absolute;
  top: -12px;
  left: 25px;
  font-size: 28px;
  background: #ffffff;
  padding: 0 12px;
}

.theory-simplification {
  font-size: 16px;
  line-height: 1.75;
  color: #333333;
}

.important-point {
  color: #2c5530;
  font-weight: 700;
  background: rgba(44, 85, 48, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
}

.practical-approach {
  color: #8b6f47;
  font-weight: 700;
  font-size: 1.05em;
}

/* H5セクションスタイル */
.h5-chord-section,
.h5-practice-section,
.h5-problem-section,
.h5-week-section {
  margin: 40px 0;
  padding: 30px;
  background: #fafafa;
  border-radius: 12px;
  border-left: 5px solid #d4a574;
  position: relative;
}

.h5-chord-title,
.h5-practice-title,
.h5-problem-title,
.h5-week-title {
  font-size: 22px;
  font-weight: 600;
  color: #1a1a1a;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  background: #ffffff;
  padding: 12px 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.h5-chord-content,
.h5-practice-content,
.h5-problem-content,
.h5-week-content {
  color: #444444;
  line-height: 1.8;
  font-size: 16px;
  padding-top: 20px;
}

/* フィンガリング説明 */
.chord-fingering-instructions {
  background: #ffffff;
  border-radius: 10px;
  padding: 25px;
  margin: 25px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.fingering-label {
  font-weight: 700;
  color: #8b6f47;
  font-size: 18px;
  margin-bottom: 15px;
  display: block;
}

.fingering-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.fingering-list li {
  padding: 12px 0;
  border-bottom: 1px solid #f0f0f0;
  display: flex;
  align-items: center;
  gap: 15px;
  transition: background-color 0.15s ease;
}

.fingering-list li:hover {
  background: #faf6f0;
  margin: 0 -15px;
  padding-left: 15px;
  padding-right: 15px;
}

.fingering-list li:last-child {
  border-bottom: none;
}

.string-number {
  font-weight: 700;
  color: #ffffff;
  background: #8b6f47;
  padding: 4px 10px;
  border-radius: 15px;
  font-size: 14px;
  min-width: 45px;
  text-align: center;
}

.fret-position {
  color: #d4a574;
  font-weight: 700;
  font-size: 1.05em;
}

.finger-name {
  color: #2c5530;
  font-weight: 600;
  background: #e8f5e9;
  padding: 2px 8px;
  border-radius: 4px;
}

/* コードティップスボックス */
.chord-tips-box {
  background: linear-gradient(135deg, #fff9f3 0%, #fef6ec 100%);
  border-radius: 12px;
  padding: 25px;
  margin: 25px 0;
  border: 1px solid rgba(212, 165, 116, 0.2);
  position: relative;
}

.chord-tips-box::before {
  content: '✨';
  position: absolute;
  top: -10px;
  right: 20px;
  font-size: 24px;
  background: #ffffff;
  padding: 0 10px;
}

.tip-text {
  font-size: 16px;
  line-height: 1.7;
  color: #333333;
}

.technique-highlight {
  color: #8b6f47;
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(139, 111, 71, 0.3);
  text-underline-offset: 3px;
}

/* 初心者励まし */
.beginner-encouragement {
  font-size: 16px;
  line-height: 1.7;
  color: #555555;
  background: #f8f9fa;
  padding: 20px;
  border-radius: 8px;
  margin: 20px 0;
}

.universal-experience {
  color: #2c5530;
  font-weight: 700;
  font-size: 1.05em;
}

/* 教師の逸話 */
.teacher-anecdote {
  background: #faf6f0;
  border-left: 4px solid #d4a574;
  padding: 20px 25px;
  margin: 25px 0;
  border-radius: 0 8px 8px 0;
  font-style: italic;
}

.student-quote {
  color: #8b6f47;
  font-weight: 600;
}

/* 練習方法セクション */
.practice-methods-content {
  padding: 10px;
}

.common-mistake {
  color: #333333;
  line-height: 1.75;
  margin-bottom: 15px;
}

.inefficient {
  color: #dc3545;
  font-weight: 700;
}

.progression-example {
  background: #f8f9fa;
  padding: 20px;
  border-radius: 8px;
  margin: 20px 0;
}

/* 習得基準 */
.mastery-criteria {
  background: #ffffff;
  border-radius: 10px;
  padding: 25px;
  margin: 25px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.criteria-label {
  font-weight: 700;
  color: #8b6f47;
  font-size: 17px;
  margin-bottom: 15px;
  display: block;
}

.criteria-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.criteria-list li {
  position: relative;
  padding-left: 35px;
  margin-bottom: 15px;
  color: #444444;
  line-height: 1.6;
}

.criteria-list li::before {
  content: '✔';
  position: absolute;
  left: 0;
  color: #2c5530;
  font-weight: 700;
  font-size: 20px;
}

/* コード切り替え組み合わせ */
.switching-combinations {
  background: linear-gradient(135deg, #f5f5f5 0%, #eeeeee 100%);
  border-radius: 12px;
  padding: 25px;
  margin: 25px 0;
}

.combinations-label {
  font-weight: 700;
  color: #1a1a1a;
  font-size: 17px;
  margin-bottom: 15px;
  display: block;
}

.combination-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 15px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.combination-list li {
  background: #ffffff;
  padding: 12px;
  border-radius: 8px;
  text-align: center;
  font-weight: 600;
  color: #8b6f47;
  font-size: 18px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  transition: transform 0.15s ease;
}

.combination-list li:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

/* 練習方法論 */
.practice-methodology {
  background: #ffffff;
  border-radius: 12px;
  padding: 30px;
  margin: 30px 0;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
}

.method-label {
  font-weight: 700;
  color: #8b6f47;
  font-size: 18px;
  margin-bottom: 20px;
  display: block;
}

.method-steps {
  counter-reset: step-counter;
  list-style: none;
  padding: 0;
  margin: 0;
}

.method-steps li {
  counter-increment: step-counter;
  position: relative;
  padding-left: 50px;
  margin-bottom: 18px;
  color: #444444;
  line-height: 1.7;
  padding-bottom: 18px;
  border-bottom: 1px dashed #e0e0e0;
}

.method-steps li:last-child {
  border-bottom: none;
}

.method-steps li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  background: #d4a574;
  color: #ffffff;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
}

/* 日々の練習 */
.daily-practice {
  background: #e8f5e9;
  padding: 20px;
  border-radius: 8px;
  margin: 20px 0;
  text-align: center;
}

.practice-duration {
  color: #2c5530;
  font-weight: 800;
  font-size: 1.1em;
}

/* 推奨曲リスト */
.recommended-songs {
  background: #faf6f0;
  border-radius: 12px;
  padding: 25px;
  margin: 25px 0;
}

.songs-label {
  font-weight: 700;
  color: #8b6f47;
  font-size: 17px;
  margin-bottom: 15px;
  display: block;
}

.song-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.song-list li {
  background: #ffffff;
  padding: 15px;
  margin-bottom: 12px;
  border-radius: 8px;
  border-left: 4px solid #d4a574;
  transition: transform 0.15s ease;
}

.song-list li:hover {
  transform: translateX(5px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

/* 問題と解決法 */
.solution-box-chord {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border-radius: 10px;
  padding: 25px;
  margin: 20px 0;
  border: 2px solid rgba(44, 85, 48, 0.1);
}

.solution-label {
  display: block;
  font-weight: 700;
  color: #2c5530;
  margin-bottom: 15px;
  font-size: 18px;
}

.solution-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.solution-list li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 15px;
  color: #333333;
  line-height: 1.7;
}

.solution-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: #2c5530;
  font-weight: 700;
  font-size: 18px;
}

/* 個人体験ボックス */
.personal-experience-box {
  background: #f8f9fa;
  border-radius: 10px;
  padding: 25px;
  margin: 25px 0;
  border: 1px solid #e0e0e0;
  position: relative;
}

.personal-experience-box::before {
  content: '🎸';
  position: absolute;
  top: -12px;
  left: 20px;
  font-size: 28px;
  background: #ffffff;
  padding: 0 10px;
}

.pain-duration {
  color: #8b6f47;
  font-weight: 600;
  font-style: italic;
}

.universal-path {
  color: #2c5530;
  font-weight: 700;
  font-size: 1.05em;
}

/* 成功ストーリー */
.success-story {
  background: linear-gradient(135deg, #fff9f3 0%, #fef6ec 100%);
  border-radius: 12px;
  padding: 25px;
  margin: 25px 0;
  border: 2px solid rgba(212, 165, 116, 0.2);
}

.achievement-joy {
  color: #d4a574;
  font-weight: 800;
  font-size: 1.1em;
}

/* Fコード旅 */
.f-chord-journey {
  background: #faf6f0;
  padding: 20px;
  border-radius: 10px;
  margin: 25px 0;
  border-left: 4px solid #8b6f47;
}

.doubt-moment {
  color: #6b5d54;
  font-style: italic;
  font-weight: 500;
}

.daily-commitment {
  color: #2c5530;
  font-weight: 700;
  background: #e8f5e9;
  padding: 2px 8px;
  border-radius: 4px;
}

/* チャート凡例 */
.chart-legend {
  background: #f5f5f5;
  border-radius: 10px;
  padding: 25px;
  margin: 25px 0;
}

.legend-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.legend-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  background: #ffffff;
  border-radius: 6px;
}

.legend-term {
  font-weight: 700;
  color: #8b6f47;
  min-width: 80px;
}

/* 週間スケジュール */
.daily-schedule {
  background: #ffffff;
  border-radius: 10px;
  padding: 20px;
  margin: 20px 0;
}

.schedule-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.schedule-list li {
  padding: 12px;
  margin-bottom: 10px;
  background: #fafafa;
  border-radius: 6px;
  border-left: 3px solid #d4a574;
  transition: background-color 0.15s ease;
}

.schedule-list li:hover {
  background: #f5f5f5;
}

.day {
  font-weight: 700;
  color: #8b6f47;
  margin-right: 10px;
}

/* 最終励ましボックス */
.final-encouragement-box {
  background: linear-gradient(135deg, #8b6f47 0%, #d4a574 100%);
  color: #ffffff;
  border-radius: 15px;
  padding: 35px;
  margin-top: 40px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(139, 111, 71, 0.3);
}

.encouragement-text {
  font-size: 18px;
  line-height: 1.8;
}

.fundamental-skill {
  font-size: 1.15em;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.enjoy-journey {
  display: inline-block;
  margin-top: 10px;
  padding: 5px 15px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 20px;
}

/* CTAセクション */
.chord-cta-section {
  margin-top: 60px;
  background: linear-gradient(135deg, #d4a574 0%, #8b6f47 100%);
  border-radius: 20px;
  padding: 50px;
  box-shadow: 0 10px 40px rgba(139, 111, 71, 0.25);
}

.cta-content-wrapper {
  text-align: center;
}

.cta-main-message {
  color: #ffffff;
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 15px;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.cta-sub-message {
  color: rgba(255, 255, 255, 0.95);
  font-size: 18px;
  margin-bottom: 35px;
  line-height: 1.6;
}

.chord-cta-button {
  display: inline-block;
  background: #ffffff;
  color: #8b6f47;
  padding: 18px 45px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.chord-cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
  background: #faf6f0;
}

/* 画像配置 */
.chord-image-placement-first,
.chord-image-placement-second,
.chord-image-placement-third {
  margin: 45px 0;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
}

.chord-full-width-image {
  width: 100%;
  height: auto;
  display: block;
}

.image-description-text {
  background: #1a1a1a;
  color: #ffffff;
  padding: 18px;
  text-align: center;
  font-size: 15px;
  font-weight: 500;
  margin: 0;
}

/* その他の強調スタイル */
.definition-emphasis {
  font-weight: 700;
  color: #8b6f47;
  font-size: 1.05em;
}

.benefit-highlight {
  color: #2c5530;
  font-weight: 600;
  background: #e8f5e9;
  padding: 2px 8px;
  border-radius: 4px;
}

.easiest-chord {
  color: #2c5530;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: rgba(44, 85, 48, 0.3);
  text-underline-offset: 3px;
}

.major-challenge {
  color: #dc3545;
  font-weight: 700;
  font-size: 1.05em;
}

.simplified-version {
  color: #2c5530;
  font-weight: 700;
  background: #e8f5e9;
  padding: 2px 10px;
  border-radius: 4px;
}

.never-give-up {
  color: #d4a574;
  font-weight: 700;
  font-style: italic;
}

.days-needed {
  color: #8b6f47;
  font-weight: 700;
  font-size: 1.1em;
}

.crucial-skill {
  color: #dc3545;
  font-weight: 800;
  font-size: 1.05em;
}

.no-rush {
  color: #2c5530;
  font-weight: 600;
  font-style: italic;
}

.continuous-practice {
  color: #8b6f47;
  font-weight: 700;
  background: #faf6f0;
  padding: 2px 8px;
  border-radius: 4px;
}

.muscle-memory {
  color: #6b5d54;
  font-weight: 600;
  font-style: italic;
}

.chord-components {
  color: #8b6f47;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.emotional-difference {
  color: #d4a574;
  font-weight: 600;
  background: #faf6f0;
  padding: 2px 8px;
  border-radius: 4px;
}

.practice-priority {
  color: #2c5530;
  font-weight: 700;
  font-size: 1.05em;
}

.plan-duration {
  color: #dc3545;
  font-weight: 800;
  font-size: 1.1em;
}

.accuracy-over-speed {
  color: #2c5530;
  font-weight: 600;
  font-style: italic;
}

.smooth-transition {
  color: #8b6f47;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: rgba(139, 111, 71, 0.3);
  text-underline-offset: 3px;
}

.rhythm-addition {
  color: #d4a574;
  font-weight: 600;
}

.real-application {
  color: #2c5530;
  font-weight: 700;
  background: #e8f5e9;
  padding: 2px 8px;
  border-radius: 4px;
}

.daily-practice {
  color: #dc3545;
  font-weight: 800;
  font-size: 1.05em;
}

.success-rate {
  color: #2c5530;
  font-weight: 700;
  font-style: italic;
}

/* レスポンシブデザイン - タブレット */
@media screen and (max-width: 768px) {
  .chord-mastery-section-2025-advanced {
    padding: 70px 0;
  }
  
  .chord-container-ultimate-wrapper {
    padding: 0 15px;
  }
  
  .chord-section-primary-title {
    font-size: 34px;
  }
  
  .chord-basics-understanding-article,
  .essential-chords-article,
  .efficient-practice-article,
  .chord-problems-article,
  .chord-chart-article,
  .chord-theory-article,
  .practice-plan-article {
    padding: 40px 30px;
    margin-bottom: 35px;
  }
  
  .chord-h4-main-title {
    font-size: 26px;
    gap: 15px;
  }
  
  .h4-chord-number {
    width: 38px;
    height: 38px;
    font-size: 16px;
  }
  
  .chord-example-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  
  .chord-name-display {
    font-size: 20px;
  }
  
  .combination-list {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .legend-list {
    grid-template-columns: 1fr;
  }
  
  .chord-cta-section {
    padding: 40px 25px;
  }
  
  .cta-main-message {
    font-size: 24px;
  }
  
  .cta-sub-message {
    font-size: 16px;
  }
  
  .chord-cta-button {
    padding: 15px 35px;
    font-size: 16px;
  }
}

/* レスポンシブデザイン - モバイル */
@media screen and (max-width: 480px) {
  .chord-mastery-section-2025-advanced {
    padding: 50px 0;
  }
  
  .chord-main-header-supreme {
    margin-bottom: 50px;
  }
  
  .chord-section-primary-title {
    font-size: 28px;
    padding-bottom: 20px;
  }
  
  .chord-opening-statement,
  .chord-concern-address,
  .chord-chapter-purpose {
    font-size: 16px;
    padding: 15px 20px;
  }
  
  .chord-basics-understanding-article,
  .essential-chords-article,
  .efficient-practice-article,
  .chord-problems-article,
  .chord-chart-article,
  .chord-theory-article,
  .practice-plan-article {
    padding: 30px 20px;
    margin-bottom: 25px;
    border-radius: 12px;
  }
  
  .h4-chord-header-wrapper {
    margin-bottom: 30px;
    padding-bottom: 15px;
  }
  
  .chord-h4-main-title {
    font-size: 22px;
    gap: 12px;
    flex-wrap: wrap;
  }
  
  .h4-chord-number {
    width: 32px;
    height: 32px;
    font-size: 14px;
    border-radius: 8px;
  }
  
  .chord-examples-display-grid {
    padding: 25px 15px;
    gap: 15px;
  }
  
  .h5-chord-section,
  .h5-practice-section,
  .h5-problem-section,
  .h5-week-section {
    margin: 30px 0;
    padding: 20px 15px;
  }
  
  .h5-chord-title,
  .h5-practice-title,
  .h5-problem-title,
  .h5-week-title {
    font-size: 18px;
    padding: 10px 15px;
  }
  
  .h5-chord-content,
  .h5-practice-content,
  .h5-problem-content,
  .h5-week-content {
    font-size: 15px;
    padding-top: 15px;
  }
  
  .chord-fingering-instructions {
    padding: 20px 15px;
  }
  
  .fingering-label {
    font-size: 16px;
  }
  
  .combination-list {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  
  .method-steps li {
    padding-left: 40px;
  }
  
  .method-steps li::before {
    width: 28px;
    height: 28px;
    font-size: 14px;
  }
  
  .chord-tips-box {
    padding: 20px 15px;
  }
  
  .solution-box-chord {
    padding: 20px 15px;
  }
  
  .final-encouragement-box {
    padding: 25px 15px;
  }
  
  .encouragement-text {
    font-size: 16px;
  }
  
  .chord-cta-section {
    padding: 35px 20px;
    border-radius: 15px;
  }
  
  .cta-main-message {
    font-size: 20px;
    margin-bottom: 12px;
  }
  
  .cta-sub-message {
    font-size: 15px;
    margin-bottom: 25px;
  }
  
  .chord-cta-button {
    padding: 14px 30px;
    font-size: 15px;
    width: 100%;
    max-width: 300px;
  }
  
  .chord-image-placement-first,
  .chord-image-placement-second,
  .chord-image-placement-third {
    margin: 35px -20px;
    border-radius: 0;
  }
  
  .image-description-text {
    font-size: 14px;
    padding: 15px;
  }
}

/* 超小型デバイス対応 */
@media screen and (max-width: 360px) {
  .chord-section-primary-title {
    font-size: 24px;
  }
  
  .chord-h4-main-title {
    font-size: 20px;
  }
  
  .h4-chord-number {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }
  
  .chord-opening-statement,
  .chord-concern-address,
  .chord-chapter-purpose {
    font-size: 15px;
    padding: 12px 15px;
  }
  
  .h5-chord-title,
  .h5-practice-title,
  .h5-problem-title,
  .h5-week-title {
    font-size: 16px;
  }
  
  .h5-chord-content,
  .h5-practice-content,
  .h5-problem-content,
  .h5-week-content {
    font-size: 14px;
  }
  
  .chord-cta-button {
    font-size: 14px;
    padding: 12px 25px;
  }
}

/* プリント用スタイル */
@media print {
  .chord-mastery-section-2025-advanced {
    background: #ffffff;
  }
  
  .chord-cta-section,
  .chord-cta-button {
    display: none;
  }
  
  .chord-basics-understanding-article,
  .essential-chords-article,
  .efficient-practice-article,
  .chord-problems-article,
  .chord-chart-article,
  .chord-theory-article,
  .practice-plan-article {
    box-shadow: none;
    border: 1px solid #d0d0d0;
    page-break-inside: avoid;
  }
}

/* アクセシビリティ向上 */
@media (prefers-reduced-motion: reduce) {
  .chord-example-item,
  .combination-list li,
  .song-list li,
  .schedule-list li,
  .chord-cta-button {
    transition: none;
  }
}

/* ダークモード対応（オプション） */
@media (prefers-color-scheme: dark) {
  .chord-mastery-section-2025-advanced {
    background: linear-gradient(180deg, #1a1a1a 0%, #0f0f0f 100%);
  }
  
  .chord-basics-understanding-article,
  .essential-chords-article,
  .efficient-practice-article,
  .chord-problems-article,
  .chord-chart-article,
  .chord-theory-article,
  .practice-plan-article {
    background: #1f1f1f;
    border: 1px solid rgba(212, 165, 116, 0.2);
  }
  
  .chord-section-primary-title,
  .chord-h4-main-title {
    color: #f5f5f5;
  }
  
  .chord-opening-statement,
  .chord-concern-address,
  .chord-chapter-purpose {
    background: #2a2a2a;
    color: #e0e0e0;
  }
  
  .h5-chord-section,
  .h5-practice-section,
  .h5-problem-section,
  .h5-week-section {
    background: #2a2a2a;
  }
  
  .chord-fingering-instructions,
  .chord-examples-display-grid {
    background: #252525;
  }
  
  .chord-example-item {
    background: #1a1a1a;
  }
}