/* ============================================================================
   活動兩頁：活動總覽（academy-events.php）＋ 活動單篇（proto-single-event.php）
   ----------------------------------------------------------------------------
   乙線第 2 件，2026-10-05 建立。依賴 im-design-system.css、im-course.css（版型元件共用：
   頁首、搜尋、卡片、表單外框、淺底區、摺疊、本院其他）。本檔只寫活動才有的部分。
   設計稿：13_新視覺改版/01_設計稿/03_學院系列_版本2/學院最新活動 (2).png、學院活動單一文章 (2).png
   每區註解寫的是寬 1440 時的目標高度（＝設計稿比例 × 1440）。
   ============================================================================ */

/* ═════════════════════════ 活動總覽 ═════════════════════════ */

/* 頁首：稿比課程總覽高，目標 0.27（≈385px） */
.im-chub:is(.im-chub--events, .im-chub--insights) .im-chub-hero { min-height: clamp(300px, 26.5vw, 420px); }
/* 卡片出口文字 */
.im-chub--events .im-chub-list .im-card__body::after { content: "了解活動　→"; }
.im-chub--results .im-chub-list .im-card__body::after { content: "閱讀案例　→"; }
.im-chub--insights .im-chub-list .im-card__body::after { content: "閱讀全文　→"; }
/* 一般卡：目標 0.215（≈310px） */
.im-chub:is(.im-chub--events, .im-chub--insights) .im-chub-list .im-card__link { min-height: clamp(15rem, 20vw, 19rem); }

/* 「想掌握下一場活動？」：目標 0.07（≈100px） */
.im-ehub-next-wrap { padding-block: var(--im-s-8) 0; }
.im-ehub-next { display: flex; align-items: center; justify-content: space-between; gap: var(--im-s-6); padding: var(--im-s-4) clamp(1.25rem, 3vw, 2.5rem); border: 1px solid var(--im-brand-ink); background: var(--im-surface); }
.im-ehub-next__title { font-size: var(--im-fs-2xl); letter-spacing: .12em; }

/* ═════════════════════════ 活動單篇 ═════════════════════════ */

/* ① 頁首：稿 0.435（含壓在下緣的導覽格）；下緣多留一段給導覽格壓上來 */
.im-esingle-hero .im-csingle-hero__main { padding-block-end: calc(var(--im-s-8) + 3rem); }
.im-esingle-hero .im-csingle-hero__code { padding-block-end: calc(var(--im-s-8) + 4rem); }   /* 避開壓上來的導覽格 */
.im-esingle-status { display: inline-block; padding: var(--im-s-2) var(--im-s-4); border: 1px solid var(--im-line-strong); font-size: var(--im-fs-base); color: var(--im-text); }

/* 導覽格的負外距不能穿透到米色區（否則整個米色區會往上蓋住頁首） */
.im-esingle .im-csingle-light { display: flow-root; }
/* 活動標題常含場次與日期，比課程長：字級收一階 */
.im-course-page .im-esingle-hero .im-csingle-hero__title { font-size: clamp(2rem, 1.2rem + 2vw, 3rem); }

/* ② 四格快速導覽：目標 0.092（≈130px），往上壓住頁首下緣（照稿） */
.im-esingle-jump { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(var(--im-jump-n, 4), minmax(0, 1fr)); margin-block: -3.5rem var(--im-s-3); border: 1px solid var(--im-line); background: var(--im-surface); box-shadow: var(--im-shadow); }
.im-esingle-jump a { display: flex; align-items: center; justify-content: center; gap: var(--im-s-4); min-height: 8rem; padding: var(--im-s-4) var(--im-s-5); color: var(--im-text-strong); font-family: var(--im-font-serif); font-size: var(--im-fs-md); letter-spacing: .06em; transition: color var(--im-dur) var(--im-ease); }
.im-esingle-jump a + a { border-inline-start: 1px solid var(--im-line); }
.im-esingle-jump a:hover { color: var(--im-brand-ink); }
.im-esingle-jump svg { flex: 0 0 2.25rem; width: 2.25rem; height: 2.25rem; color: var(--im-brand-ink); }

/* ③ 橫幅（時間＋地點）：目標 0.141（≈205px） */
.im-esingle-banner { min-height: clamp(10rem, 14vw, 13rem); }
.im-esingle-facts { position: relative; display: flex; flex-wrap: wrap; gap: var(--im-s-4) var(--im-s-9, 3rem); margin: 0; padding: var(--im-s-7) clamp(1.5rem, 4vw, 3.5rem); }
.im-esingle-facts div { display: flex; flex-direction: column; gap: var(--im-s-1); }
.im-esingle-facts dt { font-size: 14px; letter-spacing: .2em; color: var(--im-brand-on-dark); }
.im-esingle-facts dd { margin: 0; font-family: var(--im-font-serif); font-size: var(--im-fs-xl); letter-spacing: .06em; color: #FFFFFF; }

/* ④ 編號區塊：每塊目標 0.20（≈290px），左右交錯 */
.im-esingle-body { display: flex; flex-direction: column; gap: var(--im-s-5); padding-block-start: var(--im-s-5); }
.im-esingle-block { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); min-height: clamp(15rem, 19vw, 19rem); }
.im-esingle-block:nth-child(even) { grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); }
.im-esingle-block .im-csingle-prose { font-size: var(--im-fs-sm); line-height: 1.85; }
.im-esingle-block .im-blk__list { grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); }
.im-esingle-block:nth-child(even) .im-esingle-block__media { order: -1; }
.im-esingle-block.is-textonly { grid-template-columns: 1fr; }
.im-esingle-block__text { display: flex; flex-direction: column; justify-content: center; gap: var(--im-s-3); padding: clamp(1.25rem, 3vw, 2.5rem); border: 1px solid var(--im-line); background: var(--im-surface); }
.im-esingle-block .im-csingle-prose dl { display: grid; grid-template-columns: max-content 1fr; gap: var(--im-s-2) var(--im-s-6); margin: 0; }
.im-esingle-block .im-csingle-prose dt { color: var(--im-text-muted); }
.im-esingle-block .im-csingle-prose dd { margin: 0; color: var(--im-text-strong); }
.im-esingle-block__num { font-family: var(--im-font-serif); font-size: var(--im-fs-2xl); font-style: italic; line-height: 1; color: var(--im-brand-ink); }
.im-esingle-block h2 { position: relative; padding-block-end: var(--im-s-3); font-size: var(--im-fs-xl); letter-spacing: .06em; }
.im-esingle-block h2::after { content: ""; position: absolute; left: 0; bottom: 0; width: 1.75rem; height: 1px; background: var(--im-brand-ink); }
.im-esingle-block__media { position: relative; min-height: 14rem; overflow: hidden; }
.im-esingle-block__media img { position: absolute; inset: 0; }

/* ⑤ 常見問題：標題左右細線（照稿） */
.im-esingle-faq { padding-block-start: var(--im-s-5); }
.im-esingle-faq__title { display: flex; align-items: center; gap: var(--im-s-5); margin-block-end: var(--im-s-4); font-size: var(--im-fs-lg); letter-spacing: .3em; }
.im-esingle-faq__title::before, .im-esingle-faq__title::after { content: ""; flex: 1; height: 1px; background: var(--im-line-strong); }
.im-esingle-faq { width: 100%; }   /* 10/12 寬度 1440：單篇容器＝內容寬，拿掉原 60rem */
.im-esingle-faq .im-csingle-fold__body { padding: 0 var(--im-s-6); }
.im-esingle-faq .im-blk__qa + .im-blk__qa { border-block-start: 1px solid var(--im-line); }
.im-esingle-faq .im-blk__qa > summary { display: flex; align-items: center; justify-content: space-between; gap: var(--im-s-4); padding-block: var(--im-s-4); list-style: none; cursor: pointer; font-weight: var(--im-fw-medium); color: var(--im-text-strong); }
.im-esingle-faq .im-blk__qa > summary::-webkit-details-marker { display: none; }
.im-esingle-faq .im-blk__qa > summary::after { content: ""; flex: 0 0 .55rem; width: .55rem; height: .55rem; border-inline-end: 1.5px solid var(--im-brand-ink); border-block-end: 1.5px solid var(--im-brand-ink); transform: rotate(45deg) translateY(-25%); transition: transform var(--im-dur) var(--im-ease); }
.im-esingle-faq .im-blk__qa[open] > summary::after { transform: rotate(-135deg); }
.im-esingle-faq .im-blk__qa > p { margin: 0 0 var(--im-s-4); font-size: var(--im-fs-sm); color: var(--im-text-muted); }

/* ⑥ 已結束提示 */
.im-esingle-note { display: flex; align-items: center; gap: var(--im-s-4); min-height: clamp(5rem, 7vw, 6.5rem); padding: var(--im-s-5) var(--im-s-6); border: 1px solid var(--im-line-strong); font-family: var(--im-font-serif); font-size: var(--im-fs-md); color: var(--im-text); }
.im-esingle-note span { display: grid; place-items: center; flex: 0 0 2rem; height: 2rem; border: 1px solid var(--im-brand-ink); border-radius: 50%; color: var(--im-brand-ink); font-size: 15px; }

/* ⑦ 收尾橫條：目標 0.124（≈180px），照稿永遠深底 */
.im-esingle-cta-wrap { padding-block: var(--im-s-7) 0; }
.im-esingle-cta { position: relative; display: flex; align-items: center; justify-content: flex-end; min-height: clamp(9rem, 12vw, 11.5rem); overflow: hidden; background: #0F0D0A; }
.im-esingle-cta__media { position: absolute; inset: 0; }
.im-esingle-cta__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(270deg, rgba(8,7,6,.94) 0%, rgba(8,7,6,.8) 45%, rgba(8,7,6,.2) 100%); }
.im-esingle-cta__text { position: relative; display: flex; flex-direction: column; align-items: flex-start; gap: var(--im-s-4); padding: var(--im-s-6) clamp(1.5rem, 6vw, 6rem); }
.im-esingle-cta h2 { font-size: var(--im-fs-xl); letter-spacing: .1em; color: #FFFFFF; }
.im-esingle-cta .im-chub-btn { border-color: var(--im-brand-on-dark); color: var(--im-brand-on-dark); }
.im-esingle-cta .im-chub-btn:hover { background: var(--im-brand-on-dark); color: #14100A; }

/* ═════════════════════════ 平板與手機 ═════════════════════════ */
@media (max-width: 1000px) {
  .im-esingle-jump { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .im-esingle-jump a:nth-child(3) { border-inline-start: 0; }
  .im-esingle-jump a:nth-child(n+3) { border-block-start: 1px solid var(--im-line); }
}
@media (max-width: 750px) {
  .im-chub:is(.im-chub--events, .im-chub--insights) .im-chub-hero { min-height: 0; }
  .im-chub:is(.im-chub--events, .im-chub--insights) .im-chub-list .im-card__link { min-height: 0; }
  .im-ehub-next { flex-direction: column; align-items: flex-start; }
  .im-ehub-next__title { font-size: var(--im-fs-xl); }

  .im-esingle-hero .im-csingle-hero__main { padding-block-end: calc(var(--im-s-7) + 2rem); }
  .im-esingle-jump { margin-block-start: -2rem; }
  .im-esingle-jump a { flex-direction: column; justify-content: center; gap: var(--im-s-2); min-height: 5.5rem; padding: var(--im-s-3); font-size: var(--im-fs-sm); text-align: center; }
  .im-esingle-jump svg { flex-basis: 1.75rem; width: 1.75rem; height: 1.75rem; }
  .im-esingle-facts { flex-direction: column; padding: var(--im-s-6) var(--im-s-5); }
  .im-esingle-block,
  .im-esingle-block:nth-child(even) { grid-template-columns: 1fr; min-height: 0; }
  .im-esingle-block__media,
  .im-esingle-block:nth-child(even) .im-esingle-block__media { order: -1; height: 9.5rem; min-height: 0; }
  .im-esingle-cta { justify-content: flex-start; }
  .im-esingle-cta__text { padding: var(--im-s-6) var(--im-s-5); }
}

/* 內容寬度回到設計系統版心後（1440 時 1208），文字多的區塊因換行變高：文字欄放寬、摘要限行 */
.im-esingle-block { grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr); }
.im-esingle-block:nth-child(even) { grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr); }
.im-esingle-block.is-textonly { grid-template-columns: 1fr; }
.im-esingle--case_study .im-esingle-block .im-csingle-prose { line-height: 1.8; }
.im-chub--insights .im-chub-list .im-card:not(:first-child) .im-card__excerpt,
.im-chub--events .im-chub-list .im-card:not(:first-child) .im-card__excerpt { -webkit-line-clamp: 2; }
@media (max-width: 750px) { .im-esingle-block, .im-esingle-block:nth-child(even) { grid-template-columns: 1fr; } }