/* ========================================
   CST Tire LP専用CSS
   ======================================== */

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   カラー変数 & フォント変数
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
:root {
  --cst-black: #0d0d0d;
  --cst-carbon: #1a1a1a;
  --cst-orange: #ff6b35;
  --cst-orange-dark: #e65525;
  --cst-red: #E31E24;
  --cst-red-dark: #C41A1F;
  --cst-gold: #FFD700;
  --cst-gold-dark: #D4AF37;
  --cst-white: #ffffff;
  --cst-gray-light: #f5f5f5;
  --cst-line-green: #06c755;

  /* 日本語フォント */
  --cst-font-sans: Meiryo, "Hiragino Kaku Gothic Pro", Osaka, "MS PGothic", sans-serif;
  --cst-font-bold: "Noto Sans JP", sans-serif;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   共通スタイル
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-main {
  font-family: var(--cst-font-sans);
  background-color: var(--cst-white);
}

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

@media (min-width: 600px) {
  .cst-container {
    padding: 0 40px;
  }
}

/* セクションヘッダー */
.cst-section-header {
  text-align: center;
  margin-bottom: clamp(32px, 5vw, 64px);
}

.cst-section-title {
  font-family: var(--cst-font-bold);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: var(--cst-carbon);
  margin-bottom: 12px;
  line-height: 1.2;
  letter-spacing: 0.05em;
}

.cst-section-title--english {
  font-family: 'Anton', sans-serif;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cst-section-subtitle {
  font-size: clamp(14px, 2vw, 18px);
  color: #666;
  font-weight: 400;
}

/* ボタンスタイル */
.cst-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s ease;
  cursor: pointer;
  background: transparent;
  border: 3px solid var(--cst-white);
  color: var(--cst-white);
}

.cst-btn i {
  font-size: 20px;
}

.cst-btn--phone {
  background: transparent;
  color: var(--cst-white);
  border: 3px solid var(--cst-white);
}

.cst-btn--phone:hover {
  background: var(--cst-white);
  color: var(--cst-red);
  border: 3px solid var(--cst-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
}

.cst-btn--line {
  background: transparent;
  color: var(--cst-white);
  border: 3px solid var(--cst-white);
}

.cst-btn--line:hover {
  background: var(--cst-white);
  color: var(--cst-line-green);
  border: 3px solid var(--cst-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
}

.cst-btn--large {
  padding: 18px 36px;
  font-size: 18px;
}

@media (min-width: 600px) {
  .cst-btn {
    padding: 16px 32px;
    font-size: 18px;
  }

  .cst-btn--large {
    padding: 20px 40px;
    font-size: 20px;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   ヘッダー（アクティブリンク）
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.nav__link.active {
  color: var(--cst-gold);
  font-weight: 700;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   ヒーローセクション
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(80px, 12vw, 100px) 20px clamp(40px, 6vw, 60px);
}

@media (max-width: 599px) {
  .cst-hero {
    min-height: 70vh;
  }
}

/* CST画像背景（プレースホルダー） */
.cst-hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #1a1a1a;
  background-image: url('../images/cst/cst-hero-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 0;
  opacity: 0;
  animation: heroFadeIn 2s ease-out 0.3s forwards;
}

@keyframes heroFadeIn {
  0% {
    opacity: 0;
    transform: scale(1.05);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

.cst-hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(0, 0, 0, 0.75) 0%,
    rgba(0, 0, 0, 0.65) 50%,
    rgba(0, 0, 0, 0.75) 100%
  );
  z-index: 1;
  opacity: 0;
  animation: heroFadeIn 2s ease-out 0.3s forwards;
}

.cst-hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  animation: fadeInUp 1.8s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* サブタイトル（上） */
.cst-hero__subtitle-top {
  font-family: var(--cst-font-bold);
  font-size: clamp(20px, 3.5vw, 32px);
  font-weight: 700;
  color: var(--cst-white);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.cst-hero__subtitle-bottom {
  font-family: var(--cst-font-bold);
  font-size: clamp(18px, 3vw, 28px);
  font-weight: 700;
  color: var(--cst-white);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
  margin-bottom: clamp(24px, 4vw, 40px);
  letter-spacing: 0.05em;
}

.cst-hero__title {
  font-family: 'Anton', sans-serif;
  font-size: clamp(36px, 8vw, 80px);
  font-weight: 400;
  color: var(--cst-white);
  text-shadow:
    0 2px 10px rgba(0, 0, 0, 0.8),
    0 0 30px rgba(227, 30, 36, 0.5);
  margin-bottom: clamp(12px, 2vw, 16px);
  line-height: 1.1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cst-hero__model {
  font-family: 'Anton', sans-serif;
  font-size: clamp(28px, 6vw, 56px);
  font-weight: 700;
  color: var(--cst-red);
  text-shadow:
    0 2px 10px rgba(0, 0, 0, 0.8),
    0 0 40px rgba(227, 30, 36, 0.6),
    0 0 80px rgba(227, 30, 36, 0.4);
  margin-bottom: clamp(16px, 4vw, 32px);
  line-height: 1.2;
  letter-spacing: 0.12em;
  text-transform: none;
  animation: glowPulse 2s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% {
    text-shadow:
      0 2px 10px rgba(0, 0, 0, 0.8),
      0 0 40px rgba(227, 30, 36, 0.6),
      0 0 80px rgba(227, 30, 36, 0.4);
  }
  50% {
    text-shadow:
      0 2px 10px rgba(0, 0, 0, 0.8),
      0 0 60px rgba(227, 30, 36, 0.8),
      0 0 100px rgba(227, 30, 36, 0.6);
  }
}

.cst-hero__text {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--cst-white);
  line-height: 1.8;
  margin-bottom: 0;
  text-shadow: 0 2px 5px rgba(0, 0, 0, 0.8);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   ヒーローセクション下のサブタイトル
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-hero-subtitle {
  background-color: #f5f5f5;
  padding: 80px 20px 60px 20px;
  text-align: center;
}

.cst-hero-subtitle p {
  font-family: 'Zen Antique', serif;
  font-size: clamp(28px, 4.5vw, 48px);
  font-weight: 700;
  color: #000;
  margin: 0;
  letter-spacing: 0.08em;
  line-height: 1.4;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1.7s ease-out, transform 1.7s ease-out;
}

.cst-hero-subtitle.visible p {
  opacity: 1;
  transform: translateY(0);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   2つの特徴（Rspeedスタイル）
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-three-features {
  padding: 250px 0 280px 0;
  background: #f5f5f5;
}

.cst-three-features__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 120px;
  max-width: 900px;
  margin: 0 auto;
  justify-items: center;
}

.cst-three-features__item {
  text-align: center;
  position: relative;
  max-width: 350px;
}

.cst-three-features__number {
  font-family: 'Zen Antique', serif;
  font-size: 72px;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 20px;
  color: #000000;
}

.cst-three-features__subtitle {
  font-size: 13px;
  color: #666666;
  margin: 0 0 15px 0;
  font-weight: 400;
  letter-spacing: 0.05em;
}

.cst-three-features__title {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 32px;
  font-weight: 800;
  color: #000000;
  margin: 0 0 20px 0;
  letter-spacing: 0.02em;
}

.cst-three-features__description {
  font-size: 14px;
  color: #666666;
  line-height: 1.8;
  margin: 0;
  font-weight: 400;
}

@media (max-width: 1024px) {
  .cst-three-features__grid {
    gap: 80px;
    padding: 0 20px;
  }

  .cst-three-features__number {
    font-size: 60px;
  }

  .cst-three-features__title {
    font-size: 28px;
  }
}

@media (max-width: 768px) {
  .cst-three-features {
    padding: 100px 0 150px 0;
  }

  .cst-three-features__grid {
    grid-template-columns: 1fr;
    gap: 80px;
  }

  .cst-three-features__number {
    font-size: 56px;
  }

  .cst-three-features__title {
    font-size: 26px;
  }
}

@media (max-width: 599px) {
  .cst-three-features {
    padding: 60px 0 100px 0;
  }

  .cst-three-features__grid {
    grid-template-columns: 1fr;
    gap: 60px;
    padding: 0 20px;
  }

  .cst-three-features__item {
    max-width: 100%;
  }

  .cst-three-features__number {
    font-size: 48px;
    margin-bottom: 16px;
  }

  .cst-three-features__subtitle {
    font-size: 12px;
    margin-bottom: 12px;
  }

  .cst-three-features__title {
    font-size: 22px;
    margin-bottom: 16px;
  }

  .cst-three-features__description {
    font-size: 14px;
    line-height: 1.7;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   3つの強みセクション
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-features {
  padding: clamp(80px, 10vw, 140px) 0;
  background:
    linear-gradient(45deg, var(--cst-black) 25%, transparent 25%),
    linear-gradient(-45deg, var(--cst-black) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--cst-black) 75%),
    linear-gradient(-45deg, transparent 75%, var(--cst-black) 75%),
    linear-gradient(to bottom, var(--cst-carbon), #000000);
  background-size: 20px 20px, 20px 20px, 20px 20px, 20px 20px, 100% 100%;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px, 0 0;
  position: relative;
}

.cst-features .cst-container {
  position: relative;
  z-index: 1;
}

/* 特徴アイテム（Rspeedスタイル） */
.cst-feature-item {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 60px;
  margin-bottom: 100px;
  align-items: start;
}

/* 左側：番号とタイトル */
.cst-feature-item__left {
  position: sticky;
  top: 20px;
  margin-left: -60px;
}

.cst-feature-item__number {
  font-size: clamp(100px, 12vw, 150px);
  font-weight: 900;
  font-family: 'Zen Antique', serif;
  color: var(--cst-white);
  line-height: 0.85;
  margin-bottom: 10px;
}

.cst-feature-item__title {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 900;
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--cst-white);
  margin: 0;
  line-height: 1.2;
  white-space: nowrap;
  text-align: left;
}

/* 右側：カードエリア */
.cst-feature-item__right {
  display: flex;
  flex-direction: column;
}

.cst-feature-item__card {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 150px;
}

.cst-feature-item__card:last-child {
  margin-bottom: 0;
}

.cst-feature-item__label {
  grid-column: 1 / -1;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin: 0 0 20px 0;
  font-family: 'Arial', sans-serif;
}

.cst-feature-item__icon {
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--cst-red), var(--cst-red-dark));
  border-radius: 50%;
  font-size: 48px;
  color: var(--cst-white);
  box-shadow: 0 4px 15px rgba(227, 30, 36, 0.3);
}

.cst-feature-item__content h4 {
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 700;
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--cst-white);
  margin: 0 0 30px 0;
  line-height: 1.4;
}

.cst-feature-item__content p {
  font-size: clamp(14px, 1.5vw, 15px);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
  font-family: 'Noto Sans JP', sans-serif;
}

@media (max-width: 1024px) {
  .cst-feature-item {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .cst-feature-item__left {
    position: static;
    margin-left: 0;
  }

  .cst-feature-item__card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .cst-feature-item__icon {
    margin: 0 auto;
  }

  .cst-feature-item__right {
    gap: 60px;
  }
}

@media (max-width: 599px) {
  .cst-features {
    padding: 60px 0;
  }

  .cst-feature-item {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 60px;
  }

  .cst-feature-item__left {
    text-align: center;
  }

  .cst-feature-item__number {
    font-size: 80px;
    margin-bottom: 8px;
  }

  .cst-feature-item__title {
    font-size: 28px;
    white-space: normal;
  }

  .cst-feature-item__card {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 60px;
  }

  .cst-feature-item__label {
    margin-bottom: 16px;
    font-size: 13px;
  }

  .cst-feature-item__icon {
    width: 80px;
    height: 80px;
    font-size: 40px;
  }

  .cst-feature-item__content h4 {
    font-size: 20px;
    margin-bottom: 20px;
  }

  .cst-feature-item__content p {
    font-size: 14px;
    line-height: 1.8;
  }

  .cst-feature-item__right {
    gap: 40px;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   CST紹介セクション（Rspeedスタイル）
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-performance-rider {
  padding: clamp(80px, 12vw, 180px) 0;
  position: relative;
  background-color: #333;
  background-image: url('../images/cst/cst-performance-bg.jpg');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  overflow: visible;
}

/* 半透明オーバーレイ */
.cst-performance-rider::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.5);
  z-index: 0;
  pointer-events: none;
}

.cst-performance-rider__wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 32px);
  position: relative;
  z-index: 1;
}

/* 右側縦書きテキスト */
.cst-performance-rider__side-text {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: 'Anton', sans-serif;
  font-size: 76px;
  font-weight: 400;
  letter-spacing: 0.15em;
  z-index: 10;
  pointer-events: none;
  color: #999999;
  opacity: 0.3;
  white-space: nowrap;
}

.cst-performance-rider__content {
  position: relative;
  z-index: 1;
  padding-bottom: 20px;
}

/* グレー背景コンテナ（テキストと画像を含む） */
.cst-performance-rider__images {
  position: relative;
  min-height: 1200px;
  margin-top: 150px;
  background-color: #e8e8e8;
  padding: 60px 50px 50px;
  border-radius: 16px;
  box-sizing: border-box;
  overflow: visible;
}

/* メインキャッチフレーズ */
.cst-performance-rider__catchphrase {
  position: absolute;
  top: -130px;
  left: 50%;
  transform: translateX(-50%);
  font-size: clamp(32px, 5.5vw, 58px);
  font-weight: 900;
  font-family: 'Noto Sans JP', sans-serif;
  color: #1a1a1a;
  text-align: center;
  z-index: 4;
  letter-spacing: 0.05em;
  width: 100%;
  line-height: 1.3;
}

/* 説明文 */
.cst-performance-rider__description {
  position: absolute;
  top: 130px;
  left: 30px;
  z-index: 4;
  max-width: 700px;
  text-align: left;
  width: auto;
}

.cst-performance-rider__description p {
  font-size: clamp(15px, 1.8vw, 16px);
  line-height: 1.8;
  color: #333;
  font-family: var(--cst-font-sans);
  font-weight: 600;
  text-shadow:
    2px 2px 4px rgba(255, 255, 255, 0.9),
    -2px -2px 4px rgba(255, 255, 255, 0.9),
    2px -2px 4px rgba(255, 255, 255, 0.9),
    -2px 2px 4px rgba(255, 255, 255, 0.9),
    0 0 10px rgba(255, 255, 255, 0.8);
}

.cst-performance-rider__description--highlight {
  font-weight: 700;
  margin-bottom: 1em;
}

.cst-performance-rider__description strong {
  color: var(--cst-red);
  font-weight: 700;
}

/* 各画像の配置 */
.cst-performance-rider__image {
  position: absolute;
  overflow: hidden;
}

.cst-performance-rider__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

/* 左側の大きな画像 */
.cst-performance-rider__image--left-large {
  left: 5%;
  top: 35%;
  width: 50%;
  max-height: 600px;
  z-index: 2;
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.4),
    0 10px 20px rgba(0, 0, 0, 0.3);
  transform: translateZ(0);
}

.cst-performance-rider__image--left-large img {
  object-fit: cover;
  object-position: center center;
  width: 100%;
  height: 100%;
  max-height: 600px;
}

/* 右側の大きな画像 */
.cst-performance-rider__image--right-large {
  right: 5%;
  top: 60%;
  width: 52%;
  max-height: 500px;
  z-index: 3;
  box-shadow:
    0 25px 70px rgba(0, 0, 0, 0.45),
    0 12px 25px rgba(0, 0, 0, 0.35);
  transform: translateZ(0);
}

.cst-performance-rider__image--right-large img {
  object-fit: cover;
  object-position: center center;
  width: 100%;
  height: 100%;
  max-height: 500px;
}

@media (max-width: 599px) {
  .cst-performance-rider {
    padding: 60px 0;
  }

  .cst-performance-rider__side-text {
    font-size: 48px;
    right: 10px;
    opacity: 0.15;
  }

  .cst-performance-rider__images {
    min-height: 900px;
    margin-top: 100px;
    padding: 40px 20px 40px;
  }

  .cst-performance-rider__catchphrase {
    font-size: 26px;
    top: -40px;
    padding: 0 10px;
    line-height: 1.4;
  }

  .cst-performance-rider__description {
    top: 80px;
    left: 15px;
    right: 15px;
    max-width: calc(100% - 30px);
  }

  .cst-performance-rider__description p {
    font-size: 13px;
    line-height: 1.7;
  }

  .cst-performance-rider__image--left-large {
    left: 2%;
    top: 38%;
    width: 70%;
  }

  .cst-performance-rider__image--right-large {
    right: 2%;
    top: 60%;
    width: 68%;
  }
}

@media (min-width: 768px) {
  .cst-performance-rider__images {
    min-height: 1300px;
    padding: 80px 80px 60px;
  }

  .cst-performance-rider__catchphrase {
    font-size: 52px;
    top: -120px;
  }

  .cst-performance-rider__description {
    top: 150px;
    left: 50px;
    max-width: 750px;
  }

  .cst-performance-rider__description p {
    font-size: 16px;
  }

  .cst-performance-rider__image--left-large {
    left: 5%;
    top: 32%;
    width: 58%;
    height: auto;
  }

  .cst-performance-rider__image--right-large {
    right: 5%;
    top: 70%;
    width: 55%;
    height: auto;
  }
}

@media (min-width: 1024px) {
  .cst-performance-rider__images {
    min-height: 1250px;
    max-width: 1200px;
    margin: 40px auto 0;
    padding: 100px 100px 80px;
  }

  .cst-performance-rider__catchphrase {
    font-size: 58px;
    top: -110px;
  }

  .cst-performance-rider__description {
    top: 170px;
    left: 70px;
    max-width: 800px;
  }

  .cst-performance-rider__description p {
    font-size: 17px;
  }

  .cst-performance-rider__image--left-large {
    left: 8%;
    top: 30%;
    width: 55%;
    height: auto;
  }

  .cst-performance-rider__image--right-large {
    right: 8%;
    top: 65%;
    width: 52%;
    height: auto;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   動画セクション / POINTセクション
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-video {
  padding: clamp(60px, 8vw, 100px) 0;
  background: var(--cst-carbon);
}

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

.cst-video .cst-section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}

/* POINTカード */
.cst-points {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

@media (min-width: 600px) {
  .cst-points {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

.cst-point-card {
  background: var(--cst-gray-light);
  padding: 32px 24px;
  border-radius: 12px;
  text-align: center;
  transition: all 0.3s ease;
  border-left: 4px solid var(--cst-red);
}

.cst-point-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.cst-point-card__number {
  font-size: 14px;
  font-weight: 700;
  color: var(--cst-red);
  margin-bottom: 12px;
  letter-spacing: 0.1em;
}

.cst-point-card__title {
  font-size: clamp(18px, 2.5vw, 22px);
  font-weight: 800;
  color: var(--cst-carbon);
  margin-bottom: 16px;
  font-family: var(--cst-font-bold);
}

.cst-point-card__text {
  font-size: 14px;
  line-height: 1.8;
  color: #666;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   レース実績セクション
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-race {
  padding: clamp(60px, 8vw, 100px) 0;
  background:
    linear-gradient(45deg, var(--cst-black) 25%, transparent 25%),
    linear-gradient(-45deg, var(--cst-black) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--cst-black) 75%),
    linear-gradient(-45deg, transparent 75%, var(--cst-black) 75%),
    linear-gradient(to bottom, var(--cst-carbon), #000000);
  background-size: 20px 20px, 20px 20px, 20px 20px, 20px 20px, 100% 100%;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px, 0 0;
}

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

.cst-race .cst-section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.cst-race__content {
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
}

.cst-race__description {
  font-size: clamp(16px, 2.5vw, 18px);
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.9);
  max-width: 800px;
  margin: 0 auto 48px;
}

/* ベネフィットグリッド */
.cst-benefit-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 1000px;
  margin: 48px auto 0;
}

@media (min-width: 600px) {
  .cst-benefit-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

.cst-benefit-card {
  background: var(--cst-gray-light);
  padding: 32px 24px;
  border-radius: 12px;
  text-align: center;
  transition: all 0.3s ease;
}

.cst-benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.cst-benefit-card__icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--cst-red), var(--cst-red-dark));
  border-radius: 50%;
  font-size: 40px;
  color: var(--cst-white);
  box-shadow: 0 4px 15px rgba(227, 30, 36, 0.3);
}

.cst-benefit-card__title {
  font-size: clamp(18px, 2.5vw, 20px);
  font-weight: 700;
  color: var(--cst-carbon);
  margin-bottom: 12px;
  font-family: var(--cst-font-bold);
}

.cst-benefit-card__text {
  font-size: 14px;
  line-height: 1.8;
  color: #666;
}

@media (max-width: 599px) {
  .cst-race {
    padding: 50px 0;
  }

  .cst-race__description {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 32px;
    padding: 0 20px;
  }

  .cst-benefit-grid {
    gap: 24px;
    padding: 0 20px;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   なぜ選ばれるかセクション
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-about {
  padding: clamp(80px, 10vw, 140px) 0;
  background:
    linear-gradient(45deg, var(--cst-black) 25%, transparent 25%),
    linear-gradient(-45deg, var(--cst-black) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--cst-black) 75%),
    linear-gradient(-45deg, transparent 75%, var(--cst-black) 75%),
    linear-gradient(to bottom, var(--cst-carbon), #000000);
  background-size: 20px 20px, 20px 20px, 20px 20px, 20px 20px, 100% 100%;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px, 0 0;
  position: relative;
}

.cst-about .cst-container {
  position: relative;
  z-index: 1;
}

/* 特徴アイテム */
.cst-about-item {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 60px;
  margin-bottom: 100px;
  align-items: start;
}

/* 左側：番号とタイトル */
.cst-about-item__left {
  position: sticky;
  top: 20px;
  margin-left: -60px;
}

.cst-about-item__number {
  font-size: clamp(100px, 12vw, 150px);
  font-weight: 900;
  font-family: 'Zen Antique', serif;
  color: var(--cst-white);
  line-height: 0.85;
  margin-bottom: 10px;
}

.cst-about-item__title {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 900;
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--cst-white);
  margin: 0;
  line-height: 1.2;
  white-space: nowrap;
  text-align: left;
}

/* 右側：カードエリア */
.cst-about-item__right {
  display: flex;
  flex-direction: column;
}

.cst-about-item__card {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 150px;
}

.cst-about-item__card:last-child {
  margin-bottom: 0;
}

.cst-about-item__label {
  grid-column: 1 / -1;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin: 0 0 20px 0;
  font-family: 'Arial', sans-serif;
}

.cst-about-item__icon {
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--cst-red), var(--cst-red-dark));
  border-radius: 50%;
  font-size: 48px;
  color: var(--cst-white);
  box-shadow: 0 4px 15px rgba(227, 30, 36, 0.3);
}

.cst-about-item__content h4 {
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 700;
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--cst-white);
  margin: 0 0 30px 0;
  line-height: 1.4;
}

.cst-about-item__content p {
  font-size: clamp(14px, 1.5vw, 15px);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
  font-family: 'Noto Sans JP', sans-serif;
}

@media (max-width: 1024px) {
  .cst-about-item {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .cst-about-item__left {
    position: static;
    margin-left: 0;
  }

  .cst-about-item__card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .cst-about-item__icon {
    margin: 0 auto;
  }

  .cst-about-item__right {
    gap: 60px;
  }
}

@media (max-width: 599px) {
  .cst-about {
    padding: 60px 0;
  }

  .cst-about-item {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 60px;
  }

  .cst-about-item__left {
    text-align: center;
  }

  .cst-about-item__number {
    font-size: 80px;
    margin-bottom: 8px;
  }

  .cst-about-item__title {
    font-size: 24px;
    white-space: normal;
  }

  .cst-about-item__card {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 60px;
  }

  .cst-about-item__label {
    margin-bottom: 16px;
    font-size: 13px;
  }

  .cst-about-item__icon {
    width: 80px;
    height: 80px;
    font-size: 40px;
  }

  .cst-about-item__content h4 {
    font-size: 20px;
    margin-bottom: 20px;
  }

  .cst-about-item__content p {
    font-size: 14px;
    line-height: 1.8;
  }

  .cst-about-item__right {
    gap: 40px;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   セッティングセクション
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-setting {
  padding: clamp(80px, 10vw, 140px) 0;
  background:
    linear-gradient(45deg, var(--cst-black) 25%, transparent 25%),
    linear-gradient(-45deg, var(--cst-black) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--cst-black) 75%),
    linear-gradient(-45deg, transparent 75%, var(--cst-black) 75%),
    linear-gradient(to bottom, var(--cst-carbon), #000000);
  background-size: 20px 20px, 20px 20px, 20px 20px, 20px 20px, 100% 100%;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px, 0 0;
  position: relative;
}

.cst-setting .cst-container {
  position: relative;
  z-index: 1;
}

/* 特徴アイテム */
.cst-setting-item {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 60px;
  margin-bottom: 100px;
  align-items: start;
}

/* 左側：番号とタイトル */
.cst-setting-item__left {
  position: sticky;
  top: 20px;
  margin-left: -60px;
}

.cst-setting-item__number {
  font-size: clamp(100px, 12vw, 150px);
  font-weight: 900;
  font-family: 'Zen Antique', serif;
  color: var(--cst-white);
  line-height: 0.85;
  margin-bottom: 10px;
}

.cst-setting-item__title {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 900;
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--cst-white);
  margin: 0;
  line-height: 1.2;
  white-space: nowrap;
  text-align: left;
}

/* 右側：カードエリア */
.cst-setting-item__right {
  display: flex;
  flex-direction: column;
}

.cst-setting-item__card {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 150px;
}

.cst-setting-item__card:last-child {
  margin-bottom: 0;
}

.cst-setting-item__label {
  grid-column: 1 / -1;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin: 0 0 20px 0;
  font-family: 'Arial', sans-serif;
}

.cst-setting-item__icon {
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--cst-red), var(--cst-red-dark));
  border-radius: 50%;
  font-size: 48px;
  color: var(--cst-white);
  box-shadow: 0 4px 15px rgba(227, 30, 36, 0.3);
}

.cst-setting-item__content h4 {
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 700;
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--cst-white);
  margin: 0 0 30px 0;
  line-height: 1.4;
}

.cst-setting-item__content p {
  font-size: clamp(14px, 1.5vw, 15px);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
  font-family: 'Noto Sans JP', sans-serif;
}

@media (max-width: 1024px) {
  .cst-setting-item {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .cst-setting-item__left {
    position: static;
    margin-left: 0;
  }

  .cst-setting-item__card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .cst-setting-item__icon {
    margin: 0 auto;
  }

  .cst-setting-item__right {
    gap: 60px;
  }
}

@media (max-width: 599px) {
  .cst-setting {
    padding: 60px 0;
  }

  .cst-setting-item {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 60px;
  }

  .cst-setting-item__left {
    text-align: center;
  }

  .cst-setting-item__number {
    font-size: 80px;
    margin-bottom: 8px;
  }

  .cst-setting-item__title {
    font-size: 24px;
    white-space: normal;
  }

  .cst-setting-item__card {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 60px;
  }

  .cst-setting-item__label {
    margin-bottom: 16px;
    font-size: 13px;
  }

  .cst-setting-item__icon {
    width: 80px;
    height: 80px;
    font-size: 40px;
  }

  .cst-setting-item__content h4 {
    font-size: 20px;
    margin-bottom: 20px;
  }

  .cst-setting-item__content p {
    font-size: 14px;
    line-height: 1.8;
  }

  .cst-setting-item__right {
    gap: 40px;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   PRIDE★1コメントセクション
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-pride-comment {
  padding: clamp(60px, 8vw, 100px) 0;
  background:
    linear-gradient(45deg, var(--cst-black) 25%, transparent 25%),
    linear-gradient(-45deg, var(--cst-black) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--cst-black) 75%),
    linear-gradient(-45deg, transparent 75%, var(--cst-black) 75%),
    linear-gradient(to bottom, var(--cst-carbon), #000000);
  background-size: 20px 20px, 20px 20px, 20px 20px, 20px 20px, 100% 100%;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px, 0 0;
}

.cst-comment-box {
  max-width: 900px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.05);
  padding: clamp(32px, 6vw, 64px);
  border-radius: 16px;
  border: 2px solid var(--cst-red);
  text-align: center;
  position: relative;
}

.cst-comment-box__icon {
  font-size: 48px;
  color: var(--cst-red);
  margin-bottom: 24px;
  opacity: 0.3;
}

.cst-comment-box__title {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 800;
  color: var(--cst-white);
  margin-bottom: 24px;
  font-family: var(--cst-font-bold);
}

.cst-comment-box__text {
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
}

.cst-comment-box__text strong {
  color: var(--cst-gold);
  font-weight: 700;
}

.cst-comment-box__sign {
  font-size: 16px;
  color: var(--cst-red);
  font-weight: 700;
  text-align: right;
}

@media (max-width: 599px) {
  .cst-pride-comment {
    padding: 50px 0;
  }

  .cst-comment-box {
    padding: 24px;
    margin: 0 20px;
  }

  .cst-comment-box__icon {
    font-size: 36px;
  }

  .cst-comment-box__text {
    font-size: 15px;
    line-height: 1.8;
  }

  .cst-comment-box__sign {
    font-size: 14px;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   おすすめユーザーセクション
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-usage {
  padding: clamp(60px, 8vw, 100px) 0;
  background: var(--cst-white);
}

.cst-usage__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: 1000px;
  margin: 0 auto;
}

@media (min-width: 960px) {
  .cst-usage__content {
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
  }
}

.cst-usage__card {
  background: var(--cst-gray-light);
  padding: 32px;
  border-radius: 12px;
  border-left: 4px solid var(--cst-red);
}

.cst-usage__title {
  font-size: clamp(20px, 3vw, 24px);
  font-weight: 700;
  color: var(--cst-carbon);
  margin-bottom: 24px;
  font-family: var(--cst-font-bold);
  display: flex;
  align-items: center;
  gap: 12px;
}

.cst-usage__title i {
  color: var(--cst-red);
  font-size: 28px;
}

.cst-usage__list {
  font-size: 15px;
  line-height: 1.9;
  color: #333;
  padding-left: 24px;
}

.cst-usage__list li {
  margin-bottom: 12px;
}

.cst-usage__cta {
  text-align: center;
  margin-top: 48px;
}

.cst-usage__cta-text {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  color: var(--cst-red);
  font-family: var(--cst-font-bold);
  margin: 0;
}

@media (max-width: 599px) {
  .cst-usage {
    padding: 50px 0;
  }

  .cst-usage__content {
    gap: 24px;
    padding: 0 20px;
  }

  .cst-usage__card {
    padding: 24px;
  }

  .cst-usage__title {
    font-size: 18px;
  }

  .cst-usage__list {
    font-size: 14px;
  }

  .cst-usage__cta {
    margin-top: 32px;
  }

  .cst-usage__cta-text {
    font-size: 18px;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   TOPに戻るリンク
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-back-to-top {
  position: absolute;
  left: 20px;
  bottom: 40px;
  z-index: 3;
}

.cst-back-to-top__link {
  color: #ffffff;
  text-decoration: none;
  font-family: var(--cst-font-sans);
  transition: transform 0.3s ease;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
}

.cst-back-to-top__arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  transition: transform 0.3s ease;
}

.cst-back-to-top__chevron {
  width: 20px;
  height: 20px;
  border-top: 3px solid #ffffff;
  border-right: 3px solid #ffffff;
  transform: rotate(-45deg);
  display: block;
}

.cst-back-to-top__chevron:last-child {
  margin-top: -8px;
}

.cst-back-to-top__text {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.2em;
  display: block;
}

.cst-back-to-top__link:hover {
  transform: translateY(-3px);
}

.cst-back-to-top__link:hover .cst-back-to-top__arrow {
  transform: translateY(-2px);
}

/* スマートフォン対応 */
@media (max-width: 768px) {
  .cst-back-to-top {
    left: 15px;
    bottom: 20px;
  }

  .cst-back-to-top__chevron {
    width: 16px;
    height: 16px;
    border-width: 2px;
  }

  .cst-back-to-top__chevron:last-child {
    margin-top: -6px;
  }

  .cst-back-to-top__text {
    font-size: 12px;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   価格一覧セクション
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-price {
  padding: clamp(60px, 10vw, 120px) 0;
  background:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 2px,
      rgba(255,255,255,0.015) 2px,
      rgba(255,255,255,0.015) 4px
    ),
    linear-gradient(180deg, #111 0%, #1a1a1a 100%);
}

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

.cst-price .cst-section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.cst-price__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(20px, 4vw, 48px);
  margin-top: clamp(32px, 5vw, 56px);
}

.cst-price__group {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-top: 3px solid var(--cst-red);
  border-radius: 8px;
  overflow: hidden;
}

.cst-price__group-header {
  background: rgba(227, 30, 36, 0.15);
  padding: 16px 24px;
  text-align: center;
  border-bottom: 1px solid rgba(227, 30, 36, 0.3);
}

.cst-price__inch {
  font-family: 'Anton', sans-serif;
  font-size: clamp(28px, 4vw, 40px);
  color: var(--cst-white);
  letter-spacing: 0.05em;
}

.cst-price__inch small {
  font-family: var(--cst-font-sans);
  font-size: clamp(12px, 1.5vw, 14px);
  font-weight: 700;
  color: rgba(255, 255, 255, 1);
  margin-left: 4px;
}

.cst-price__list {
  list-style: none;
  padding: 12px 0;
  margin: 0;
}

.cst-price__item {
  display: flex;
  align-items: center;
  padding: 12px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.2s ease;
}

.cst-price__item:last-child {
  border-bottom: none;
}

.cst-price__item:hover {
  background: rgba(227, 30, 36, 0.08);
}

.cst-price__size {
  font-family: 'Anton', sans-serif;
  font-size: clamp(14px, 2vw, 18px);
  color: var(--cst-white);
  letter-spacing: 0.05em;
  min-width: 110px;
}

.cst-price__dots {
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.6) 0px,
    rgba(255, 255, 255, 0.6) 3px,
    transparent 3px,
    transparent 8px
  );
  margin: 0 12px;
}

.cst-price__value {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(15px, 2vw, 19px);
  font-weight: 800;
  color: var(--cst-red);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.cst-price__note {
  text-align: center;
  margin-top: clamp(24px, 4vw, 36px);
  font-size: clamp(12px, 1.5vw, 14px);
  color: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.cst-price__note i {
  color: var(--cst-red);
  opacity: 0.8;
}

/* レスポンシブ */
@media (max-width: 599px) {
  .cst-price__grid {
    grid-template-columns: 1fr;
  }

  .cst-price__size {
    min-width: 90px;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   CTAセクション
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.cst-cta {
  position: relative;
  padding: clamp(80px, 10vw, 120px) 20px;
  background:
    linear-gradient(45deg, var(--cst-black) 25%, transparent 25%),
    linear-gradient(-45deg, var(--cst-black) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--cst-black) 75%),
    linear-gradient(-45deg, transparent 75%, var(--cst-black) 75%),
    linear-gradient(to bottom, var(--cst-carbon), #000000);
  background-size: 20px 20px, 20px 20px, 20px 20px, 20px 20px, 100% 100%;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px, 0 0;
  text-align: center;
  overflow: hidden;
}

.cst-cta__bg-text {
  position: absolute;
  top: 85%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'Anton', sans-serif;
  font-size: clamp(80px, 8vw, 160px);
  font-weight: 900;
  color: rgba(255, 255, 255, 0.08);
  letter-spacing: 0.1em;
  white-space: nowrap;
  z-index: 1;
  user-select: none;
  pointer-events: none;
  line-height: 1;
  width: 100%;
  text-align: center;
}

@media (max-width: 1200px) {
  .cst-cta__bg-text {
    font-size: clamp(60px, 6.5vw, 100px);
  }
}

@media (max-width: 768px) {
  .cst-cta__bg-text {
    font-size: clamp(40px, 5.5vw, 60px);
    bottom: 5px;
  }
}

.cst-cta__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, transparent 30%, rgba(0, 0, 0, 0.1) 100%);
}

.cst-cta__content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.cst-cta__title {
  font-family: var(--cst-font-bold);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  color: var(--cst-white);
  margin-bottom: 16px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.cst-cta__text {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--cst-white);
  margin-bottom: 40px;
  line-height: 1.8;
}

.cst-cta__buttons {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  margin-bottom: 24px;
}

@media (min-width: 600px) {
  .cst-cta__buttons {
    flex-direction: row;
    justify-content: center;
    gap: 24px;
  }
}

.cst-cta__hours {
  font-size: 16px;
  color: var(--cst-white);
  font-weight: 700;
}

@media (max-width: 599px) {
  .cst-cta {
    padding: 60px 20px;
  }

  .cst-cta__title {
    font-size: 26px;
    margin-bottom: 12px;
  }

  .cst-cta__text {
    font-size: 15px;
    margin-bottom: 32px;
    line-height: 1.7;
  }

  .cst-cta__buttons {
    gap: 12px;
  }

  .cst-cta__hours {
    font-size: 14px;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   スクロールアニメーション
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

/* フェードイン（下から上） */
.scroll-fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.scroll-fade-in.delay-200 {
  transition-delay: 0.2s;
}

.scroll-fade-in.delay-400 {
  transition-delay: 0.4s;
}

/* 左からスライドイン */
.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 右からスライドイン */
.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right.delay-200 {
  transition-delay: 0.2s;
}

.slide-in-right.delay-300 {
  transition-delay: 0.3s;
}

.slide-in-right.delay-400 {
  transition-delay: 0.4s;
}

/* ズームイン */
.zoom-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.zoom-in.visible {
  opacity: 1;
  transform: scale(1);
}

.zoom-in.delay-200 {
  transition-delay: 0.2s;
}

.zoom-in.delay-400 {
  transition-delay: 0.4s;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   フローティングLINEボタン
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.floating-line-wrapper {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.floating-line-close {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 28px;
  height: 28px;
  background: rgba(0, 0, 0, 0.7);
  border: 2px solid #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 10;
  padding: 0;
}

.floating-line-close i {
  color: #ffffff;
  font-size: 14px;
}

.floating-line-close:hover {
  background: rgba(255, 0, 0, 0.8);
  border-color: #ffffff;
  transform: rotate(90deg) scale(1.1);
}

.floating-line-text {
  color: #000000;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  font-family: 'Noto Sans JP', sans-serif;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  transition: color 0.3s ease;
}

.floating-line-wrapper.dark-mode .floating-line-text {
  color: #FFFFFF;
}

.floating-line-text__line1,
.floating-line-text__line2 {
  display: block;
  white-space: nowrap;
}

.floating-line-button {
  width: 110px;
  height: 110px;
  background: linear-gradient(135deg, #00C300 0%, #00B900 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow:
    0 4px 20px rgba(0, 195, 0, 0.5),
    0 2px 10px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
  animation: pulseFloat 3s ease-in-out infinite;
}

.floating-line-button:hover {
  transform: scale(1.1);
  box-shadow:
    0 6px 25px rgba(0, 195, 0, 0.6),
    0 3px 12px rgba(0, 0, 0, 0.4);
}

.floating-line-button i {
  font-size: 70px;
  color: #FFFFFF;
}

@keyframes pulseFloat {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-5px); }
}

@media (max-width: 768px) {
  .floating-line-wrapper {
    bottom: 20px;
    right: 20px;
  }
  .floating-line-close {
    width: 24px;
    height: 24px;
    top: -6px;
    right: -6px;
  }
  .floating-line-close i {
    font-size: 12px;
  }
  .floating-line-text {
    font-size: 11px;
  }
  .floating-line-button {
    width: 90px;
    height: 90px;
  }
  .floating-line-button i {
    font-size: 55px;
  }
}

/* ========================================
   ページ固有レイアウト調整
   ======================================== */
/* ヘッダーを相対配置にしてstickyが機能するようにする */
.header {
  position: relative;
}

/* overflow-x: clip はスクロールコンテナを作らずはみ出しをクリップ */
/* fixed要素の位置計算に影響しないためLINEボタンの見切れを防ぐ */
body,
.cst-main {
  overflow-x: clip;
}