:root {
  --bg: #f5f3eb;
  --paper: #fffdf8;
  --paper-alpha: rgba(255,253,248,.96);
  --ink: #2b2420;
  --ink-soft: #6b6157;
  --line: #e3ddd0;
  --brand: #a04044;
  --brand-soft: #f1dcdb;
  --ok: #4c6b53;
  --ok-soft: #eef1ec;
  --ok-line: #d3ddd6;
  --warn: #8a6a2f;
  --warn-soft: #fdf0e3;
  --warn-ink: #8a5a1e;
  --warn-line: #ecd6b8;
  --weak: #7a6f66;
  --weak-soft: #f0eeea;
  --weak-line: #ded9d2;
  --mid-soft: #f5efe2;
  --mid-line: #e4d8bf;
  --shadow: rgba(43,36,32,.06);
}

/* 深色模式：維持紙感調性，用暖色深底而非冷藍黑 */
:root[data-theme="dark"] {
  --bg: #17130f;
  --paper: #201b16;
  --paper-alpha: rgba(32,27,22,.96);
  --ink: #ece4d8;
  --ink-soft: #a19485;
  --line: #362e26;
  --brand: #d9787c;
  --brand-soft: #3b2523;
  --ok: #8fbc9a;
  --ok-soft: #232c25;
  --ok-line: #35443a;
  --warn: #d4a862;
  --warn-soft: #322718;
  --warn-ink: #d9ab6a;
  --warn-line: #4a3a22;
  --weak: #9c9086;
  --weak-soft: #262220;
  --weak-line: #3b3530;
  --mid-soft: #2b2519;
  --mid-line: #453b28;
  --shadow: rgba(0,0,0,.3);
}

:root[data-theme="dark"] img { filter: brightness(.92); }
html { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 760px; margin: 0 auto; padding: 56px 20px 100px; }

.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--brand);
  text-transform: uppercase;
  margin-bottom: 14px;
}

h1 { font-size: 34px; font-weight: 900; margin: 0 0 4px; letter-spacing: -.01em; }
.subtitle { font-size: 17px; color: var(--ink-soft); margin: 0 0 14px; }
.lede { color: var(--ink-soft); font-size: 16px; max-width: 60ch; margin: 0 0 28px; }

.stats {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--paper);
}
.stat { flex: 1; padding: 14px 12px; text-align: center; border-right: 1px solid var(--line); }
.stat:last-child { border-right: none; }
.stat b { display: block; font-family: 'IBM Plex Mono', monospace; font-size: 20px; color: var(--brand); }
.stat span { font-size: 12px; color: var(--ink-soft); }

.progress { margin: 18px 0 40px; }
.progressbar { height: 6px; background: var(--line); border-radius: 99px; overflow: hidden; }
.progressbar i { display: block; height: 100%; background: var(--brand); width: 0%; transition: width .3s; }
.progress-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 8px;
}

.unit {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 26px 26px 22px;
  margin-bottom: 22px;
  transition: opacity .2s;
}
.unit.done { opacity: .72; }

.unit-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.unit-num { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--brand); letter-spacing: .08em; }
.unit h2 { font-size: 20px; margin: 4px 0 14px; }

.check {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--ink-soft);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}
.check input { width: 16px; height: 16px; accent-color: var(--brand); cursor: pointer; }

.block-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin: 18px 0 6px;
}
.block-label svg { width: 13px; height: 13px; }

.pain {
  background: var(--brand-soft);
  border-left: 3px solid var(--brand);
  padding: 12px 14px;
  border-radius: 0 8px 8px 0;
  font-size: 14.5px;
}
.practice { font-size: 14.5px; }

.evidence { margin-top: 14px; font-size: 12.5px; color: var(--ink-soft); }
.grade {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  border-radius: 99px;
  padding: 3px 10px;
  border: 1px solid;
  margin-right: 8px;
  vertical-align: middle;
}
.grade svg { width: 12px; height: 12px; }
.grade[data-level="強"] { background: var(--ok-soft); color: var(--ok); border-color: var(--ok-line); }
.grade[data-level="中"] { background: var(--mid-soft); color: var(--warn); border-color: var(--mid-line); }
.grade[data-level="弱"] { background: var(--weak-soft); color: var(--weak); border-color: var(--weak-line); }
.evidence-note { margin-top: 6px; }
.evidence-sources { margin-top: 5px; }
.evidence-sources a { color: var(--brand); }

.videos { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
@media (max-width: 560px) { .videos { grid-template-columns: 1fr; } }

.video { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--paper); }
.video-frame {
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
  cursor: pointer;
  border: 0;
  padding: 0;
  width: 100%;
  display: block;
}
.video-frame img { width: 100%; height: 100%; object-fit: cover; display: block; opacity: .85; }
.video-frame .play { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }
.video-frame .play span {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(160,64,68,.92);
  display: flex;
  align-items: center;
  justify-content: center;
}
.video-frame .play span::before {
  content: '';
  border-style: solid;
  border-width: 7px 0 7px 12px;
  border-color: transparent transparent transparent #fff;
  margin-left: 3px;
}
.video-frame iframe { width: 100%; height: 100%; border: 0; display: block; }

.video-meta { padding: 10px 12px; }
.video-meta .vt { font-size: 13px; font-weight: 700; line-height: 1.4; }
.video-meta .vc { font-size: 11.5px; color: var(--ink-soft); margin: 2px 0 6px; }
.video-meta .vw { font-size: 12px; color: var(--ink-soft); }
.video-meta .vlink { font-size: 11.5px; margin-top: 6px; }
.video-meta .vlink a { color: var(--ink-soft); }

.tags { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 2px 9px;
}

footer { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--ink-soft); }
footer p { margin: 0 0 8px; }

.loading, .error { padding: 40px 0; color: var(--ink-soft); font-size: 14px; }
.error { color: var(--brand); }

/* ── 目錄 ───────────────────────────────────────── */
.toc {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px 22px;
  margin-bottom: 34px;
}
.toc-title {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 10px;
}
.toc-list { list-style: none; margin: 0; padding: 0; }
.toc-list li { border-top: 1px solid var(--line); }
.toc-list li:first-child { border-top: none; }
.toc-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 0;
  text-decoration: none;
  color: var(--ink);
  font-size: 14px;
}
.toc-list a:hover .toc-name { color: var(--brand); text-decoration: underline; }
.toc-ch {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--brand);
  white-space: nowrap;
  min-width: 52px;
}
.toc-name { flex: 1; }
.toc-range {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ── 篇章標頭 ───────────────────────────────────── */
.chapter-head {
  margin: 46px 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--ink);
  scroll-margin-top: 16px;
}
.chapter-head:first-child { margin-top: 0; }
.chapter-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 4px;
}
.chapter-title { font-size: 24px; font-weight: 900; margin: 0; letter-spacing: -.01em; }
.chapter-note { font-size: 13.5px; color: var(--ink-soft); margin: 8px 0 0; }

/* ── 分軌提示 ───────────────────────────────────── */
.track-split {
  display: flex;
  gap: 13px;
  background: var(--ok-soft);
  border: 1px solid var(--ok-line);
  border-radius: 14px;
  padding: 20px 22px;
  margin: 30px 0 10px;
}
.track-split svg { width: 20px; height: 20px; color: var(--ok); flex-shrink: 0; margin-top: 2px; }
.track-split-title { font-weight: 700; font-size: 15px; margin-bottom: 5px; color: var(--ok); }
.track-split p { margin: 0; font-size: 14px; color: var(--ink); }

/* ── 前言／結語（個人觀點，與證據本體區隔） ────────── */
.opinion {
  border: 1px dashed var(--line);
  border-radius: 14px;
  padding: 22px 24px;
  margin: 0 0 34px;
  background: transparent;
}
#outro .opinion { margin: 40px 0 0; }
.opinion-head {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 10px;
}
.opinion-head svg { width: 14px; height: 14px; }
.opinion-disclaimer {
  font-size: 12.5px;
  color: var(--ink-soft);
  margin: 0 0 16px;
  padding-left: 11px;
  border-left: 2px solid var(--line);
}
.opinion-item { margin-bottom: 16px; }
.opinion-item:last-child { margin-bottom: 0; }
.opinion-item h3 { font-size: 15.5px; margin: 0 0 5px; }
.opinion-item p { margin: 0; font-size: 14px; color: var(--ink); }

/* ── 利益衝突標記 ───────────────────────────────── */
.conflict {
  display: inline-flex;
  align-items: center;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  background: var(--warn-soft);
  color: var(--warn-ink);
  border: 1px solid var(--warn-line);
  border-radius: 99px;
  padding: 3px 9px;
  margin-left: 6px;
}

/* ── 兩種讀法說明 ───────────────────────────────── */
.howto {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px 22px;
  margin-bottom: 34px;
}
.howto-head {
  display: flex;
  align-items: center;
  gap: 7px;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 14px;
}
.howto-head svg { width: 16px; height: 16px; color: var(--brand); }
.howto-ways { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 560px) { .howto-ways { grid-template-columns: 1fr; } }
.howto-way {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 13px 15px;
  background: var(--bg);
}
.hw-time {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 19px;
  font-weight: 600;
  color: var(--brand);
  line-height: 1.2;
}
.hw-name { font-size: 13px; font-weight: 700; margin: 3px 0 5px; }
.hw-desc { font-size: 12.5px; color: var(--ink-soft); line-height: 1.6; }
.howto-note {
  font-size: 12.5px;
  color: var(--ink-soft);
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  line-height: 1.7;
}

/* ── 單元時間標示 ───────────────────────────────── */
.unit-time {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.unit-time span {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  border-radius: 99px;
  padding: 2px 9px;
  white-space: nowrap;
}
.ut-read { background: var(--brand-soft); color: var(--brand); }
.ut-watch { background: var(--ok-soft); color: var(--ok); border: 1px solid var(--ok-line); }

/* ── 影片區塊標頭 ───────────────────────────────── */
.videos-label { margin-top: 20px; }
.videos-note {
  font-size: 12.5px;
  color: var(--ink-soft);
  margin: 0 0 10px;
  line-height: 1.6;
}

/* ── 影片長度徽章 ───────────────────────────────── */
.video-frame { position: relative; }
.vdur {
  position: absolute;
  right: 6px;
  bottom: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: #fff;
  background: rgba(0,0,0,.78);
  border-radius: 4px;
  padding: 1px 5px;
  pointer-events: none;
}

/* ── 目錄時間欄 ─────────────────────────────────── */
.toc-time {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--ok);
  white-space: nowrap;
}

/* ── 工具列：搜尋與展開收合 ─────────────────────── */
.search { position: relative; flex: 1; min-width: 200px; }
.search input {
  width: 100%;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 9px 34px 9px 16px;
  outline: none;
}
.search input:focus { border-color: var(--brand); }
.search input::placeholder { color: var(--ink-soft); }
.search button {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: none;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 13px;
  line-height: 1;
  padding: 4px;
}
.tbtn {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--ink-soft);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 8px 14px;
  cursor: pointer;
  white-space: nowrap;
}
.tbtn:hover { border-color: var(--brand); color: var(--brand); }
.search-count {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--brand);
  white-space: nowrap;
}
.hidden { display: none !important; }

/* 收合狀態：只留標題列 */
.unit.collapsed > *:not(.unit-head) { display: none; }
.unit.collapsed { padding-bottom: 20px; }

/* ── 開始之前 ───────────────────────────────────── */
.before {
  border: 1px solid var(--line);
  border-left: 3px solid var(--brand);
  border-radius: 0 14px 14px 0;
  background: var(--paper);
  padding: 20px 22px;
  margin-bottom: 34px;
}
.before-head {
  display: flex;
  align-items: center;
  gap: 7px;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 6px;
}
.before-head svg { width: 16px; height: 16px; color: var(--brand); }
.before-lede { font-size: 13.5px; color: var(--ink-soft); margin: 0 0 16px; line-height: 1.7; }
.before-cards { display: grid; gap: 12px; }
@media (min-width: 720px) { .before-cards { grid-template-columns: repeat(3, 1fr); } }
.before-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 15px;
  background: var(--bg);
}
.before-badge {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10.5px;
  border-radius: 99px;
  padding: 2px 8px;
  margin-bottom: 8px;
}
.before-card[data-tone="warn"] .before-badge { background: var(--brand-soft); color: var(--brand); }
.before-card[data-tone="info"] .before-badge { background: var(--ok-soft); color: var(--ok); }
.before-claim {
  font-size: 13.5px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 6px;
  text-decoration: line-through;
  text-decoration-color: var(--brand);
  text-decoration-thickness: 1.5px;
}
.before-fact { font-size: 12.5px; color: var(--ink); line-height: 1.7; }
.before-unit {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--ink-soft);
  margin-top: 8px;
}

/* ── 主課徽章 ───────────────────────────────────── */
.vmain {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10.5px;
  background: var(--brand);
  color: #fff;
  border-radius: 99px;
  padding: 2px 8px;
  margin-bottom: 6px;
}

/* ── 置底免責條 ─────────────────────────────────── */
.sticky-notice {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--paper-alpha);
  backdrop-filter: blur(6px);
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-soft);
  line-height: 1.6;
  padding: 10px 20px;
  z-index: 20;
}


/* ── 三步驟導覽 ─────────────────────────────────── */
.howto-steps {
  list-style: none;
  margin: 16px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 14px;
}
.howto-steps li { display: flex; gap: 11px; align-items: flex-start; }
.hs-n {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}
.hs-title { font-size: 14px; font-weight: 700; margin-bottom: 3px; }
.howto-steps p { margin: 0; font-size: 13px; color: var(--ink-soft); line-height: 1.7; }

/* ── 這門課的立場 ───────────────────────────────── */
.stance {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  padding: 22px 24px;
  margin-top: 34px;
}
.stance-head {
  display: flex;
  align-items: center;
  gap: 7px;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 5px;
}
.stance-head svg { width: 16px; height: 16px; color: var(--brand); }
.stance-lede { font-size: 13px; color: var(--ink-soft); margin: 0 0 16px; }
.stance-items { display: grid; gap: 13px; }
.stance-item { display: grid; grid-template-columns: 116px 1fr; gap: 12px; align-items: start; }
@media (max-width: 560px) { .stance-item { grid-template-columns: 1fr; gap: 3px; } }
.si-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--brand);
  padding-top: 2px;
}
.si-body { font-size: 13.5px; line-height: 1.75; }

/* ── 影片原文標題 ───────────────────────────────── */
.vt-orig {
  font-size: 11.5px;
  color: var(--ink-soft);
  line-height: 1.5;
  margin: 3px 0 0;
}
.vt-orig-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9.5px;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0 4px;
  margin-right: 5px;
  vertical-align: 1px;
}

/* ── 圖示按鈕（主題切換）─────────────────────────── */
.tbtn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
}
.tbtn-icon svg { width: 16px; height: 16px; }

/* ── 只看主課：隱藏延伸影片，把 37 支主課串成最短路徑 ── */
body.main-only .video.is-extra { display: none; }
body.main-only .videos { grid-template-columns: 1fr; }
body.main-only .videos-note::after {
  content: '（目前只顯示主課，點上方「顯示全部影片」可看延伸內容）';
  color: var(--brand);
}
.tbtn[aria-pressed="true"] {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

/* ══════════════════════════════════════════════
   分頁式版型：頂欄 ＋ 四個檢視
   ══════════════════════════════════════════════ */

body { padding-top: 56px; padding-bottom: 52px; }

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 18px;
  background: var(--paper-alpha);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  z-index: 30;
}

.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--ink); flex-shrink: 0; }
.brand-mark {
  width: 20px;
  height: 20px;
  border-radius: 5px;
  background: var(--brand);
  flex-shrink: 0;
}
.brand-text { font-weight: 900; font-size: 15px; white-space: nowrap; }
@media (max-width: 860px) { .brand-text { display: none; } }

.tabs { display: flex; gap: 2px; flex-shrink: 0; }
.tabs a {
  font-size: 14px;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 7px 13px;
  border-radius: 99px;
  white-space: nowrap;
}
.tabs a:hover { color: var(--ink); background: var(--bg); }
.tabs a.active { color: var(--brand); background: var(--brand-soft); font-weight: 700; }

.topbar-tools { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.topbar-tools .search { width: 220px; min-width: 0; }
@media (max-width: 720px) { .topbar-tools .search { width: 130px; } }
.topbar-tools .search input { padding: 7px 30px 7px 13px; font-size: 13px; }

.view .wrap { padding-top: 34px; }

/* ── 首頁 ───────────────────────────────────── */
.cta-row { display: flex; gap: 10px; margin: 22px 0 34px; flex-wrap: wrap; }
.cta {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  padding: 12px 26px;
  border-radius: 99px;
}
.cta:hover { opacity: .9; }
.cta-ghost { background: transparent; color: var(--brand); border: 1px solid var(--brand); }

/* ── 課程分頁的工具列 ───────────────────────── */
.course-bar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 26px;
  flex-wrap: wrap;
}
.course-bar .progress { margin: 0; flex: 1; min-width: 200px; }
.course-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

/* ── 上課（播放器）─────────────────────────── */
.player-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 18px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px 18px;
  align-items: start;
}
@media (max-width: 900px) { .player-layout { grid-template-columns: 1fr; } }

.player-stage {
  aspect-ratio: 16/9;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.player-frame, .player-frame iframe { width: 100%; height: 100%; border: 0; display: block; }

.player-empty { text-align: center; color: #cfc6bb; padding: 20px; }
.player-empty p { margin: 0; font-size: 15px; }
.player-empty-sub { font-size: 12.5px; color: #8d8478; margin-top: 6px !important; }
.player-empty-icon {
  width: 0; height: 0;
  border-style: solid;
  border-width: 13px 0 13px 22px;
  border-color: transparent transparent transparent var(--brand);
  margin: 0 auto 14px;
}

.player-meta {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 20px;
  margin-top: 14px;
}
.pm-top { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.pm-unit { font-family: 'IBM Plex Mono', monospace; font-size: 11px; color: var(--brand); }
.pm-title { font-size: 18px; margin: 0 0 4px; line-height: 1.4; }
.pm-chan { font-size: 12.5px; color: var(--ink-soft); margin: 8px 0 6px; }
.pm-why { font-size: 13.5px; line-height: 1.75; }
.pm-jump {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  color: var(--brand);
  text-decoration: none;
}
.pm-jump:hover { text-decoration: underline; }

.player-side {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  position: sticky;
  top: 72px;
  max-height: calc(100vh - 92px);
  display: flex;
  flex-direction: column;
}
@media (max-width: 900px) { .player-side { position: static; max-height: 70vh; } }

.playlist-head { padding: 12px 14px; border-bottom: 1px solid var(--line); }
.playlist-head input {
  width: 100%;
  font-family: inherit;
  font-size: 13px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 7px 14px;
  outline: none;
}
.playlist-head input:focus { border-color: var(--brand); }
.playlist-count {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--ink-soft);
  margin-top: 8px;
}

.playlist { overflow-y: auto; flex: 1; }
.pl-chapter {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--ink-soft);
  background: var(--bg);
  padding: 7px 14px;
  position: sticky;
  top: 0;
  border-bottom: 1px solid var(--line);
}
.pl-item {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--line);
  padding: 10px 14px;
  cursor: pointer;
  font-family: inherit;
  color: var(--ink);
}
.pl-item:hover { background: var(--bg); }
.pl-item.playing { background: var(--brand-soft); }
.pl-item.playing .pl-title { color: var(--brand); font-weight: 700; }
.pl-no { font-family: 'IBM Plex Mono', monospace; font-size: 11px; color: var(--ink-soft); padding-top: 2px; flex-shrink: 0; }
.pl-body { flex: 1; min-width: 0; }
.pl-title { display: block; font-size: 13px; line-height: 1.45; }
.pl-sub { display: block; font-size: 11px; color: var(--ink-soft); margin-top: 3px; }
.pl-main {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9.5px;
  border-radius: 99px;
  padding: 1px 6px;
  margin-right: 5px;
}
.pl-dur { font-family: 'IBM Plex Mono', monospace; font-size: 11px; color: var(--ink-soft); padding-top: 2px; flex-shrink: 0; }

/* ── 讀完之後可以去哪（回主站的出口）───────────── */
.next-steps {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  padding: 22px 24px;
  margin-top: 34px;
}
.ns-head {
  display: flex;
  align-items: center;
  gap: 7px;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 5px;
}
.ns-head svg { width: 16px; height: 16px; color: var(--brand); }
.ns-lede { font-size: 13px; color: var(--ink-soft); margin: 0 0 16px; line-height: 1.7; }
.ns-cards { display: grid; gap: 11px; }
@media (min-width: 660px) { .ns-cards { grid-template-columns: 1fr 1fr; } }
.ns-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  background: var(--bg);
  text-decoration: none;
  color: var(--ink);
}
.ns-card:hover { border-color: var(--brand); }
.ns-card:hover .ns-title { color: var(--brand); }
.ns-tag {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10.5px;
  background: var(--brand-soft);
  color: var(--brand);
  border-radius: 99px;
  padding: 2px 8px;
  margin-bottom: 7px;
}
.ns-title { display: block; font-size: 14px; font-weight: 700; line-height: 1.5; margin-bottom: 4px; }
.ns-desc { display: block; font-size: 12.5px; color: var(--ink-soft); line-height: 1.65; }

footer a { color: var(--brand); }