/* mv-slide-wide — メインビジュアル: 左70%写真 + 右30%キャッチコピー
 * 2026 改訂: 写真を左に大きく配置し、黒グラデーションで右側の黒背景へ自然に接続。
 * 右側には明朝体の大きなキャッチコピーと短い説明文のみを置き、情報量を絞る。 */

.mod_20_section.main_visual {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 70% 30%;
  align-items: stretch;
  min-height: min(86vh, 780px);
  background: #0a0a0a;
}

.mod_20_section .slider {
  position: relative;
  grid-column: 1;
  height: 100%;
  overflow: hidden;
}

.mod_20_section .slider-viewport {
  position: relative;
  overflow: hidden;
  width: 100%;
  height: 100%;
  aspect-ratio: auto;
  max-height: none;
  min-height: 0;
}

.mod_20_section .slider-track {
  display: flex;
  height: 100%;
  transition: transform .45s ease;
  will-change: transform;
}

.mod_20_section .slider-slide {
  flex: none;
  width: 100%;
  height: 100%;
}

.mod_20_section .slider-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 写真から右側の黒背景へ自然に繋がる黒グラデーション。右端をほぼ黒にして境界を溶かす。 */
.mod_20_section .slider::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.30) 0%, rgba(0,0,0,0.05) 30%, rgba(0,0,0,0.45) 100%),
    linear-gradient(90deg, rgba(0,0,0,0) 55%, rgba(10,10,10,0.55) 82%, rgba(10,10,10,0.96) 100%);
}

/* ── 右側キャッチコピー枠 ── */
.mod_20_section .main_visual_copy {
  position: relative;
  grid-column: 2;
  z-index: 2;
  background: #0a0a0a;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 4vw, 3.5rem) clamp(1.75rem, 3.5vw, 3rem);
  text-align: left;
  overflow: hidden;
}

/* 右下の装飾: つつじ色(アクセントカラー)の線とドットをあしらったワンポイント */
.mod_20_section .main_visual_copy::before {
  content: "";
  position: absolute;
  right: clamp(-1rem, -1.5vw, -0.5rem);
  bottom: clamp(-1.5rem, -3vw, -1rem);
  width: clamp(140px, 16vw, 220px);
  height: clamp(140px, 16vw, 220px);
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(circle at 78% 24%, var(--color-accent) 0 5px, transparent 5.5px),
    radial-gradient(circle at 62% 46%, color-mix(in srgb, var(--color-accent) 70%, transparent) 0 3px, transparent 3.5px);
  -webkit-mask-image:
    conic-gradient(from 0deg, #000 0deg, #000 360deg);
  mask-image:
    conic-gradient(from 0deg, #000 0deg, #000 360deg);
}

.mod_20_section .main_visual_copy::after {
  content: "";
  position: absolute;
  right: clamp(0.5rem, 1.5vw, 1.25rem);
  bottom: clamp(1.5rem, 4vw, 2.75rem);
  width: clamp(110px, 13vw, 170px);
  height: clamp(110px, 13vw, 170px);
  pointer-events: none;
  z-index: 0;
  border-right: 1.5px solid var(--color-accent);
  border-bottom: 1.5px solid var(--color-accent);
  border-radius: 0 0 100% 0;
  opacity: 0.55;
}

.mod_20_section .hero-title,
.mod_20_section .hero-lead {
  position: relative;
  z-index: 1;
}

.mod_20_section .hero-title {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 3.1vw, 2.9rem);
  line-height: 1.55;
  letter-spacing: 0.06em;
  color: #fff;
  margin: 0 0 1.5rem;
  text-wrap: balance;
}

.mod_20_section .hero-lead {
  font-size: var(--fs-body);
  line-height: 1.9;
  color: rgba(255, 255, 255, .78);
  letter-spacing: 0.03em;
  max-width: 30ch;
}

/* ── 進行インジケータ: 数字カウンタ（写真側の左下に配置） ── */
.mod_20_section .slider-dots {
  position: absolute;
  z-index: 3;
  left: clamp(1.25rem, 3vw, 2.5rem);
  bottom: clamp(1.25rem, 3vw, 2.5rem);
  display: flex;
  gap: .55rem;
  align-items: baseline;
  counter-reset: mv-slide-wide-dot;
  font-family: var(--font-heading);
  font-size: var(--fs-small);
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, .55);
}

.mod_20_section .slider-dot {
  width: auto;
  height: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  cursor: pointer;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  counter-increment: mv-slide-wide-dot;
  transition: color .3s ease;
}

.mod_20_section .slider-dot::before {
  content: counter(mv-slide-wide-dot, decimal-leading-zero);
}

.mod_20_section .slider-dot.is-active { color: #fff; }

.mod_20_section .slider-dot:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

/* ── 前後ボタン ── */
.mod_20_section .slider-prev,
.mod_20_section .slider-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.75rem;
  height: 2.75rem;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  background: rgba(0,0,0,0.45);
  color: #fff;
  z-index: 3;
}

.mod_20_section .slider-prev { left: clamp(.5rem, 1.5vw, 1.25rem); }
.mod_20_section .slider-next { right: clamp(.5rem, 1.5vw, 1.25rem); }

.mod_20_section .slider-prev::before,
.mod_20_section .slider-next::before {
  content: "";
  display: block;
  width: .6rem;
  height: .6rem;
  margin: 0 auto;
  border-top: 2px solid currentColor;
  border-right: 2px solid currentColor;
}

.mod_20_section .slider-prev::before { transform: rotate(-135deg); }
.mod_20_section .slider-next::before { transform: rotate(45deg); }

.mod_20_section .slider-prev:focus-visible,
.mod_20_section .slider-next:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .mod_20_section .slider-track { transition: none; }
  .mod_20_section .slider-dot { transition: none; }
}

/* ── モバイル: 縦積み(写真の上にキャッチコピー) ── */
@media (max-width: 900px) {
  .mod_20_section.main_visual {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    min-height: 0;
  }

  .mod_20_section .slider {
    grid-column: 1;
    grid-row: 1;
    aspect-ratio: 4 / 3;
    height: auto;
  }

  .mod_20_section .slider::after {
    background:
      linear-gradient(180deg, rgba(0,0,0,0.25) 0%, rgba(0,0,0,0.05) 40%, rgba(10,10,10,0.85) 100%);
  }

  .mod_20_section .main_visual_copy {
    grid-column: 1;
    grid-row: 2;
    padding: 2rem 1.25rem 2.5rem;
    text-align: center;
    align-items: center;
  }

  .mod_20_section .hero-title {
    font-size: clamp(1.6rem, 6.5vw, 2.1rem);
    text-align: center;
    margin-bottom: 1rem;
  }

  .mod_20_section .hero-lead {
    max-width: none;
    text-align: center;
  }

  .mod_20_section .slider-dots {
    justify-content: center;
    left: 0;
    right: 0;
    bottom: .85rem;
  }

  .mod_20_section .slider-prev,
  .mod_20_section .slider-next { display: none; }
}