/* ===== FV ===== */
.fv {
  position: relative;
  height: 80vh;      /* ←これ重要 */
  min-height: 500px;
  overflow: hidden;  /* ←はみ出し防止 */
}

/* 画像 */
.fv-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.fv-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.fv-overlay {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  align-items: center;
}

/* オーバーレイ（軽く） */
.fv-overlay {
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    rgba(0,0,0,0.7) 0%,
    rgba(0,0,0,0.45) 40%,
    rgba(0,0,0,0.15) 100%
  );
  display: flex;
  align-items: center;
  backdrop-filter: blur(2px);
}

/* テキスト */
.fv-content {
  max-width: 600px;
  padding: 0 20px;
  color: #fff;
}

/* ラベル */
.fv-label {
  font-size: 16px;
  color: #ffd700; /* ←ゴールド系 */
  text-shadow: 0 0 8px rgba(255,215,0,0.6);
  margin-bottom: 6px;
  opacity: 1;
  font-weight: 500;
}

/* タイトル */
.fv h1 {
  font-size: 2.4rem;
  margin-bottom: 10px;
  line-height: 1.4;
}

/* サブ */
.fv-sub {
  font-size: 1rem;
  margin-bottom: 20px;
}

.fv h1,
.fv-sub,
.fv-desc {
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

/* 特徴 */
.fv-features {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.fv-features span {
  background: rgba(0,0,0,0.4);
  border: 1px solid rgba(255,255,255,0.4);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
}

/* ボタン */
.fv-btn {
  display: inline-block;
  background: #16a34a;
  padding: 12px 20px;
  border-radius: 30px;
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

/* ===== スマホ ===== */
@media (max-width: 768px) {
  .fv {
    background-image: url('img/shibuya-sp.png');
    background-position: center;
    height: 70vh;
  }

  .fv h1 {
    font-size: 1.8rem;
  }

  .fv-content {
    text-align: center;
    margin: 0 auto;
  }
}

html {
  scroll-behavior: smooth;
}