/* tpl-cover.css — 模板·封面：校园图铺满上方 + 全宽红幅 + 底部信息 */

  .deck-ppt .slide.tpl-cover,
  .deck-ppt .slide.tpl-final {
    --cover-gallery-h: clamp(96px, 26vh, 220px);
  }

  .deck-ppt .slide.tpl-cover .slide-inner,
  .deck-ppt .slide.tpl-final .slide-inner {
    max-width: 100% !important;
    width: 100% !important;
    height: 100% !important;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start !important;
    overflow: hidden !important;
    gap: 0 !important;
  }

  /* 图 + 红幅：高度随内容，不再向下撑满 */
  .tpl-cover-main,
  .tpl-final-main {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
    width: calc(100% + 2 * var(--ppt-frame-pad-x));
    margin: calc(-1 * var(--ppt-frame-pad-y-top)) calc(-1 * var(--ppt-frame-pad-x)) 0;
  }

  .tpl-cover-gallery {
    position: relative;
    flex: 0 0 auto;
    min-height: var(--cover-gallery-h);
    height: var(--cover-gallery-h);
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: minmax(0, 1fr);
    gap: 0;
    width: 100%;
  }

  .tpl-cover-gallery::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(126, 24, 28, 0.26);
    pointer-events: none;
    z-index: 1;
  }

  .tpl-cover-photo {
    margin: 0;
    min-width: 0;
    min-height: 0;
    height: 100%;
    overflow: hidden;
  }

  .tpl-cover-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 0;
    box-shadow: none;
    pointer-events: none;
    user-select: none;
    filter: brightness(0.62) saturate(0.85);
  }

  .tpl-cover-band {
    flex: 0 0 auto;
    width: 100%;
    margin: 0;
    background: var(--pku-red);
    color: #fff;
    text-align: center;
    padding: clamp(30px, 5vh, 56px) clamp(30px, 4.5vw, 64px);
  }

  .tpl-cover-band .kicker {
    font-size: clamp(0.9em, 1.2vw, 1.05em);
    font-weight: 600;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.8);
    margin: 0 0 clamp(12px, 1.8vh, 20px);
  }

  .tpl-cover-band h1 {
    font-size: clamp(1.9em, 3.5vw, 2.85em);
    font-weight: 800;
    line-height: 1.34;
    color: #fff;
    margin: 0;
  }

  .tpl-cover-band .sub {
    font-size: clamp(1em, 1.55vw, 1.28em);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin: clamp(12px, 1.8vh, 20px) 0 0;
    line-height: 1.55;
  }

  .tpl-cover-bottom {
    flex: 1 1 0;
    min-height: 0;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: clamp(12px, 2.2vh, 28px) 0 0;
  }

  /* 信息区：主讲人/地点左对齐且冒号对齐；日期单独居中 */
  .tpl-cover-meta {
    text-align: center;
    font-size: clamp(1.05em, 1.45vw, 1.28em);
    font-weight: 600;
    color: #333;
  }

  .tpl-cover-meta-rows {
    display: inline-block;
    text-align: left;
  }

  .tpl-cover-meta-rows p { margin: 0; line-height: 2.05; }

  .tpl-cover-meta .k {
    display: inline-flex;
    justify-content: space-between;
    width: 3.5em;
    vertical-align: top;
  }

  .tpl-cover-meta .sep { margin: 0 0.15em 0 0; }
  .tpl-cover-meta .date { margin: clamp(10px, 1.4vh, 16px) 0 0; color: #666; }