/* 針灸學 · 經脈圖文對照（快速視覺版）樣式 — accent 茶綠 #2E6F6B */
.mrd-panel { padding-top: 4px; --accent: #2E6F6B; --accent-pale: #e8f1f0; }
.mrd-back {
  display: inline-block; margin: 4px 0 10px;
  font-family: var(--font-sans); font-size: 13px;
  color: var(--accent); text-decoration: none;
}
.mrd-back:hover { text-decoration: underline; }

/* 準確性警示 banner */
.mrd-banner {
  background: #fff6e6; border: 1px solid #e0a83e; color: #7a4f12;
  border-radius: 10px; padding: 10px 14px; margin-bottom: 12px;
  font-family: var(--font-sans); font-size: 13px; line-height: 1.6;
}

/* 導覽列 */
.mrd-nav { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.mrd-btn {
  font-family: var(--font-sans); font-size: 14px; cursor: pointer;
  background: var(--accent); color: #fff; border: none; border-radius: 8px; padding: 8px 14px;
}
.mrd-btn:hover { filter: brightness(1.06); }
.mrd-select {
  font-family: var(--font-sans); font-size: 14px; padding: 7px 10px;
  border-radius: 8px; border: 1px solid #cfd9d8; background: #fff; max-width: 52%;
}
.mrd-counter { font-family: var(--font-sans); font-size: 13px; color: #5c6b6a; margin-left: auto; }

/* 圖片區：可捲動 + 雙擊放大 */
.mrd-imgwrap {
  border: 1px solid #d7e2e1; border-radius: 12px; background: #fafcfc;
  overflow: auto; max-height: 68vh; display: flex; justify-content: center;
  align-items: flex-start;            /* 關鍵：勿讓 flex 拉伸圖片高度，保留原生長寬比 */
  -webkit-overflow-scrolling: touch;
}
.mrd-img {
  flex: 0 0 auto;                     /* 勿被 flex 壓縮／拉伸 */
  max-width: 100%; height: auto;      /* 按寬度等比縮放，高度自動 → 不變形 */
  display: block; cursor: zoom-in; transition: transform .15s ease;
}
.mrd-img.zoomed { max-width: none; width: 200%; height: auto; cursor: zoom-out; }

/* 文字區 */
.mrd-text { margin-top: 14px; font-family: var(--font-sans); }
.mrd-note { font-size: 13px; color: #5c6b6a; line-height: 1.6; margin: 0 0 6px; }
.mrd-h { font-size: 17px; color: var(--accent); margin: 6px 0 10px; font-family: var(--font-serif); }
.mrd-label { font-size: 13px; font-weight: 700; color: #5c6b6a; margin: 12px 0 6px; }
.mrd-route ul { margin: 0; padding-left: 20px; }
.mrd-route li { font-size: 14px; line-height: 1.7; color: #33403f; }
.mrd-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.mrd-chip {
  font-size: 13px; padding: 4px 10px; border-radius: 999px;
  background: var(--accent-pale); color: var(--accent); border: 1px solid #bcd6d3;
}

/* 工具開啟時變主內容（仿 qz/fc/tbl/zy/bm-mode，全科通用規則） */
body.mrd-mode .subject-view .lesson-list,
body.mrd-mode .subject-view .view-head { display: none !important; }
body.mrd-mode .page-hero,
body.mrd-mode .top-tabs,
body.mrd-mode .tool-shelf { display: none; }