/* ================================================================
   /earphone/ イヤホン左右チェック スタイル
   ================================================================ */

body { font-size: 0.9rem; }
.btn { font-size: 0.85rem; }

.ep-h1 { font-size: 1.4rem; margin-bottom: 4px; }
.ep-sub { font-size: 0.85rem; }
.ep-h2 { font-size: 1.05rem; font-weight: 900; margin-bottom: 8px; }
.ep-desc { font-size: 0.85rem; line-height: 1.8; color: #333; }
.ep-small { font-size: 0.75rem; color: #777; line-height: 1.7; }
.ep-note { font-size: 0.8rem; color: #b26a00; margin: 8px 0 0; }

.ep-jump { font-size: 0.85rem; margin: 8px 0; }
.ep-jump a { white-space: nowrap; }
.ep-caution {
  font-size: 0.8rem; text-align: center; color: #8a5a00;
  background: #fffdf5; border: 1px solid #ffe0a3; border-radius: 10px;
  padding: 6px 8px; margin-bottom: 12px;
}

.ep-card {
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  scroll-margin-top: 12px;
}
.ep-warn { background: #fffdf5; border-color: #ffe0a3; }

/* ===== ボタン ===== */
.ep-btn-main {
  background: #1a237e; color: #fff; font-weight: 700;
  border-radius: 12px; padding: 14px;
}
.ep-btn-main:hover { background: #283593; color: #fff; }
.ep-btn-sub {
  background: #f0f2f5; color: #333; font-weight: 700;
  border-radius: 12px; padding: 12px;
}
.ep-btn-sub:hover { background: #e4e7eb; color: #333; }
.ep-btn-main.is-active, .ep-btn-sub.is-active { background: #c62828; color: #fff; }
.ep-btn-row { display: flex; gap: 8px; }
.ep-btn-row .btn { flex: 1; }

/* ===== 左右インジケータ ===== */
.ep-lr { display: flex; gap: 8px; margin: 12px 0; }
.ep-lr-side {
  flex: 1; text-align: center; border-radius: 14px;
  background: #f0f2f5; color: #b0b5bd;
  font-size: 2.6rem; font-weight: 900; line-height: 1.1; padding: 14px 0 8px;
  transition: background 0.1s, color 0.1s;
}
.ep-lr-side span { display: block; font-size: 0.8rem; font-weight: 700; }
.ep-lr-side.is-on { background: #1a237e; color: #fff; }

/* ===== 声／ピッ音の切り替え ===== */
.ep-toggle { display: flex; align-items: center; gap: 6px; font-size: 0.85rem; }
.ep-toggle-btn {
  background: #f0f2f5; color: #333; border-radius: 999px;
  padding: 4px 14px; font-weight: 700;
}
.ep-toggle-btn.is-active { background: #1a237e; color: #fff; }

.ep-points { font-size: 0.82rem; line-height: 1.8; padding-left: 20px; margin: 12px 0 0; color: #333; }

/* ===== 音量差 ===== */
.ep-slider-wrap { display: flex; align-items: center; gap: 10px; margin: 16px 0 12px; font-weight: 700; }
.ep-slider-wrap input { flex: 1; }
.ep-result { margin-top: 12px; padding: 12px; background: #f7f8fa; border-radius: 12px; }
.ep-result-text { font-size: 1.05rem; font-weight: 900; color: #1a237e; margin-bottom: 8px; }

/* ===== 低音・高音 ===== */
.ep-range-now { text-align: center; font-size: 0.85rem; margin: 8px 0; }
.ep-range-now span { font-size: 1.4rem; font-weight: 900; color: #e65100; }
.ep-hz-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.ep-hz-grid .btn { padding: 10px 0; white-space: nowrap; }

/* ===== 水抜き ===== */
.ep-remain { text-align: center; font-size: 0.9rem; margin: 8px 0; }
.ep-remain span { font-size: 1.3rem; font-weight: 900; color: #1a237e; }
.ep-warn-box {
  font-size: 0.8rem; line-height: 1.7; background: #fffdf5;
  border: 1px solid #ffe0a3; border-radius: 10px; padding: 8px 10px;
}
.ep-warn-box p { margin: 0; }

.ep-section-h { font-size: 1.05rem; font-weight: 900; }
.ep-credit { font-size: 0.75rem; color: #888; text-align: center; margin-top: 8px; }