/* ============ 设计令牌 ============ */
/* 主题变量直接继承主站 :root（--paper/--ink/--accent/--line 等 9 套主题自动跟随）
   观模块只额外定义装饰色 */
:root{
  /* 装饰色（固定，不随主题变） */
  --vermilion:#a23b3b;
  --vermilion-soft:#c44b4b;
  --gold:#c9a961;
  --gold-soft:#8a7542;
  --jade:#5b8a7e;
  --night:#0a0d12;

  --font-serif:"Noto Serif SC", "Songti SC", "STSong", serif;
  --font-sans:"Inter", -apple-system, system-ui, "PingFang SC", "Helvetica Neue", sans-serif;
  --font-brush:"Ma Shan Zheng", var(--font-serif);

  --radius-card:8px;
  --radius-pill:999px;

  --topbar-h:52px;
  --filter-h:48px;
}

html:has(body[data-view]), body[data-view]{height:100%}
body[data-view], body.view-open{
  font-family:var(--font-serif);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
body[data-view]{background:var(--paper);overflow-x:hidden}
body[data-view] *, .view-stage, .view-stage *{box-sizing:border-box;margin:0;padding:0}
body[data-view] img, .view-stage img{display:block;max-width:100%}
body[data-view] button, .view-stage button{font-family:inherit;cursor:pointer;border:0;background:transparent;color:inherit}
body[data-view] input, .view-stage input{font-family:inherit}
body[data-view] a, .view-stage a{color:inherit;text-decoration:none}

/* ============ 浮层 ============ */
body.view-open{
  background:var(--bg);
}
.view-stage{
  position:fixed;inset:0;z-index:1800;
  background:var(--bg);
  overflow-y:auto;
  display:block;
  opacity:0;
  transform:translateY(16px) scale(.99);
  transition:opacity .4s ease, transform .4s cubic-bezier(.2,.7,.2,1),
             background .35s ease;
  --view-media-bright:1.18;
  scrollbar-width:none;
}
.view-stage::-webkit-scrollbar{display:none}
.view-stage .card-image img,
.view-stage .shot img,
.view-stage .color-page img,
.view-stage .detail-video video,
.view-stage .lightbox .lb-stage img{
  filter:brightness(var(--view-media-bright));
}
.view-stage[hidden]{display:none}
body.view-open #map,
body.view-open #timeline,
body.view-open header,
body.view-open .top-right-tools{
  filter:blur(6px) brightness(.96);
  transform:scale(.985);
  transition:filter .4s ease, transform .4s cubic-bezier(.2,.7,.2,1);
  pointer-events:none;
}
@media (max-width: 720px){
  body.view-open #map,
  body.view-open #timeline,
  body.view-open header,
  body.view-open .top-right-tools{
    filter:none;transform:none;
  }
}
@keyframes viewFadeIn{from{opacity:0;transform:translateY(16px) scale(.99)}to{opacity:1;transform:none}}
.view-stage:not([hidden]){
  animation:viewFadeIn .5s cubic-bezier(.2,.7,.2,1) forwards;
}

/* ============ 顶部导航：模仿主站 header 风格 ============ */
.view-topbar{
  position:sticky;top:0;z-index:40;
  height:calc(var(--topbar-h) + env(safe-area-inset-top, 0px));
  padding:0 16px;
  padding-top:env(safe-area-inset-top, 0px);
  padding-left:max(16px, env(safe-area-inset-left, 16px));
  padding-right:max(16px, env(safe-area-inset-right, 16px));
  box-sizing:border-box;
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  column-gap:12px;
  background:linear-gradient(180deg,
    color-mix(in srgb, var(--toolbar-bg) calc(var(--ui-surface-mix, 1) * 100%), transparent),
    color-mix(in srgb, color-mix(in srgb, var(--toolbar-bg) 85%, transparent) calc(var(--ui-surface-mix, 1) * 100%), transparent));
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.view-topbar .back{
  font-family:var(--font-sans);font-size:13px;
  color:var(--ink-soft);
  letter-spacing:.05em;flex:1;cursor:pointer;
  white-space:nowrap;
  background:transparent;border:0;padding:8px 4px;
  display:inline-flex;align-items:center;gap:4px;
  position:relative;z-index:50;pointer-events:auto;
}
.view-topbar .back svg,.view-topbar .back svg *{pointer-events:none}
.view-topbar .back:hover{color:var(--ink)}
.view-topbar .brand{
  font-family:var(--font-brush);
  font-size:18px;
  letter-spacing:.3em;
  text-indent:.3em;
  color:var(--ink);
  text-align:center;
  white-space:nowrap;
}
.view-topbar .brand b{color:var(--accent);font-weight:normal}
.view-topbar .topbar-right{
  display:flex;gap:2px;justify-content:flex-end;
}
.icon-btn{
  width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--ink-soft);transition:background .2s,color .2s;
  pointer-events:auto;
}
.icon-btn:hover{background:rgba(60,50,30,.06);color:var(--ink)}
.icon-btn svg,.icon-btn svg *{
  width:18px;height:18px;
  pointer-events:none;  /* 关键：让点击穿透 SVG 触发 button click */
}

/* 配乐按钮（与主站 #audio 双向同步） */
#vAudioBtn{position:relative}
#vAudioBtn.playing{color:var(--vermilion)}
#vAudioBtn.playing::after{
  content:"";position:absolute;top:6px;right:6px;
  width:6px;height:6px;border-radius:50%;
  background:var(--vermilion);
  animation:audioPulse 1.8s ease-in-out infinite;
}
@keyframes audioPulse{
  0%,100%{opacity:.4;transform:scale(1)}
  50%{opacity:1;transform:scale(1.2)}
}

/* 底色切换面板（点击 vThemeBtn 弹出，不再循环） */
.theme-panel{
  position:absolute;
  top:calc(var(--topbar-h) + env(safe-area-inset-top, 0px) + 8px);
  right:max(16px, env(safe-area-inset-right, 16px));
  z-index:60;
  background:color-mix(in srgb, var(--toolbar-bg) calc(var(--ui-surface-mix, 1) * 100%), transparent);
  border:1px solid var(--line);
  border-radius:10px;
  padding:8px;
  box-shadow:0 8px 24px rgba(40,30,15,.12);
  min-width:220px;
  animation:panelDrop .25s cubic-bezier(.2,.7,.2,1);
}
.theme-swatches{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:4px;
}
.theme-bright-row{
  display:flex;align-items:center;gap:8px;
  margin-top:8px;padding:8px 4px 2px;
  border-top:1px solid var(--line);
}
.theme-bright-row label{
  flex:0 0 auto;
  font-family:var(--font-sans);font-size:11px;
  color:var(--ink-soft);letter-spacing:.08em;
}
.theme-bright-row input[type=range]{
  flex:1;min-width:0;height:4px;accent-color:var(--accent);
}
.theme-bright-row #vBrightVal{
  flex:0 0 36px;text-align:right;
  font-family:var(--font-sans);font-size:11px;color:var(--ink);
}
.theme-panel[hidden]{display:none}
@keyframes panelDrop{
  from{opacity:0;transform:translateY(-8px) scale(.96)}
  to{opacity:1;transform:none}
}
.theme-swatch{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:8px 6px;border-radius:6px;
  cursor:pointer;background:transparent;border:0;
  transition:background .15s;
}
.theme-swatch:hover{background:color-mix(in srgb, var(--ink) 6%, transparent)}
.theme-swatch.active{background:color-mix(in srgb, var(--accent) 15%, transparent)}
.theme-swatch .swatch-color{
  width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line);
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.6);
}
.theme-swatch.active .swatch-color{
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.6),
             0 0 0 2px var(--accent);
}
.theme-swatch .swatch-name{
  font-family:var(--font-serif);font-size:11px;
  color:var(--ink-soft);letter-spacing:.1em;
}
.theme-swatch.active .swatch-name{color:var(--ink);font-weight:500}

/* ============ 学段筛选 ============ */
.filter-bar{
  position:sticky;top:var(--topbar-h);z-index:30;
  background:linear-gradient(180deg,
    color-mix(in srgb, var(--toolbar-bg) calc(var(--ui-surface-mix, 1) * 100%), transparent),
    color-mix(in srgb, color-mix(in srgb, var(--paper) 92%, transparent) calc(var(--ui-surface-mix, 1) * 100%), transparent));
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.tabs-primary{
  display:flex;gap:0;padding:0 16px;overflow-x:auto;
}
.tabs-primary::-webkit-scrollbar{display:none}
.tab{
  padding:10px 14px;
  font-family:var(--font-serif);font-size:14px;
  color:var(--ink-soft);letter-spacing:.1em;
  position:relative;white-space:nowrap;
  transition:color .2s;
}
.tab:hover{color:var(--ink)}
.tab.active{color:var(--ink);font-weight:500}
.tab.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;
  height:2px;background:var(--accent);
  border-radius:1px;
}

body[data-view="detail"] .filter-bar{display:none}

/* ============ 主区域 ============ */
main{padding-bottom:60px;min-height:calc(100vh - var(--topbar-h))}
.view-pane{animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.loading{
  padding:60px 16px;text-align:center;color:var(--ink-soft);
  font-family:var(--font-sans);font-size:13px;letter-spacing:.2em;
}
.empty-state{
  padding:80px 16px;text-align:center;color:var(--ink-soft);
  font-family:var(--font-serif);font-size:15px;
}

/* ============ P1 瀑布流（JS 多列分配，避免 column-count 的逐列加载） ============ */
.masonry{
  padding:12px 10px;
}
.masonry-cols{
  display:flex;gap:10px;
}
.masonry-col{
  flex:1;min-width:0;
  display:flex;flex-direction:column;gap:10px;
}
@media (min-width:768px){
  .masonry{padding:16px 14px}
  .masonry-cols{gap:14px}
  .masonry-col{gap:14px}
}
@media (min-width:1200px){
  .masonry{padding:24px 24px}
}

.card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  cursor:pointer;
  transition:transform .35s cubic-bezier(.2,.7,.2,1), box-shadow .35s ease, opacity .6s ease;
  position:relative;
  opacity:0;
  transform:translateY(20px);
}
.card.in-view{
  opacity:1;
  transform:translateY(0);
}
@media (min-width:768px){
  .card:hover{
    transform:translateY(-2px);
    box-shadow:0 8px 20px rgba(40,30,15,.08);
  }
  .card:hover .card-image img{
    transform:scale(1.04);
  }
}
.card-image{
  position:relative;
  width:100%;
  aspect-ratio:3/4;
  background:var(--paper);
  overflow:hidden;
}
.card-image img{
  width:100%;height:100%;
  object-fit:cover;display:block;
  transition:transform .8s cubic-bezier(.2,.7,.2,1);
}
.card-image .placeholder{
  position:absolute;inset:0;
  background:
    radial-gradient(ellipse at 30% 20%, color-mix(in srgb, var(--accent) 30%, transparent), transparent 60%),
    radial-gradient(ellipse at 70% 80%, color-mix(in srgb, var(--accent) 15%, transparent), transparent 70%),
    linear-gradient(135deg, var(--paper) 0%, color-mix(in srgb, var(--paper) 80%, var(--ink) 4%) 100%);
}
.card-image{
  /* 已在前面定义，这里是清理后的占位（保留 #256 之后的视频徽章等子元素样式） */
}
.card-image .placeholder{
  /* 已在前面定义 */
}
/* 视频徽章 */
.card-image .video-badge{
  position:absolute;top:8px;left:8px;z-index:2;
  display:inline-flex;align-items:center;gap:4px;
  padding:3px 7px;border-radius:var(--radius-pill);
  background:rgba(0,0,0,.55);
  backdrop-filter:blur(8px);
  color:#fff;font-family:var(--font-sans);font-size:10px;
  letter-spacing:.1em;
}
.card-image .video-badge::before{
  content:"";width:0;height:0;
  border-left:6px solid #fff;
  border-top:4px solid transparent;
  border-bottom:4px solid transparent;
}
/* 评论数气泡 */
.card-image .comment-bubble{
  position:absolute;top:8px;right:8px;z-index:2;
  display:inline-flex;align-items:center;gap:4px;
  padding:3px 7px;border-radius:var(--radius-pill);
  background:rgba(0,0,0,.45);
  backdrop-filter:blur(8px);
  color:rgba(255,255,255,.9);
  font-family:var(--font-sans);font-size:10px;
  letter-spacing:.05em;
}
.card-image .comment-bubble svg{width:10px;height:10px;opacity:.85}

/* 图片数量标注（右下角，浅色背景） */
.card-image .img-count{
  position:absolute;bottom:8px;right:8px;z-index:2;
  display:inline-flex;align-items:center;gap:3px;
  padding:3px 7px;border-radius:var(--radius-pill);
  background:rgba(255,253,247,.85);
  backdrop-filter:blur(6px);
  color:var(--ink-soft);
  font-family:var(--font-sans);font-size:10px;
  letter-spacing:.05em;
  border:1px solid rgba(255,255,255,.4);
}
.card-image .img-count svg{width:10px;height:10px;opacity:.7}

/* 教学主题 tag */
.card-image .theme-chip{
  position:absolute;bottom:8px;left:8px;z-index:2;
  padding:3px 9px;border-radius:var(--radius-pill);
  background:color-mix(in srgb, var(--accent) 90%, transparent);
  color:#fff;
  font-family:var(--font-serif);font-size:11px;
  letter-spacing:.1em;
}

.card-body{
  padding:8px 10px 10px;
}
.card-title{
  font-family:var(--font-serif);
  font-weight:500;font-size:14px;
  color:var(--ink);line-height:1.3;
  letter-spacing:.02em;
  margin-bottom:2px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.card-subtitle{
  font-family:var(--font-sans);
  font-size:10.5px;color:var(--ink-soft);
  letter-spacing:.03em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.card-subtitle .sep{
  display:inline-block;width:3px;height:3px;border-radius:50%;
  background:var(--line);
  margin:0 5px;vertical-align:middle;
}

/* 移动端：精简卡片，只留标题 + 作者 */
@media (max-width:520px){
  .card-body{padding:6px 8px 8px}
  .card-title{font-size:13px;margin-bottom:1px}
  .card-subtitle{font-size:10px}
  .card-subtitle .count-info,
  .card-subtitle .grade-info{display:none}
  .card-image .theme-chip{
    font-size:9px;padding:2px 6px;
    bottom:6px;left:6px;
  }
  .card-image .video-badge,
  .card-image .comment-bubble,
  .card-image .img-count{
    font-size:9px;padding:2px 6px;
  }
  .card-image .video-badge{top:6px;left:6px}
  .card-image .comment-bubble{top:6px;right:6px}
  .card-image .img-count{bottom:6px;right:6px}
}

/* 未收录卡 */
.card.placeholder-card{
  opacity:.55;
  cursor:default;
}
.card.placeholder-card:hover{transform:none;box-shadow:none}
.card.placeholder-card .card-image{display:none}
.card.placeholder-card .card-body{padding:20px}
.card.placeholder-card .card-title{font-size:14px;color:var(--ink-soft)}
.card.placeholder-card .card-subtitle{font-style:italic}
.card.placeholder-card .want-it{
  display:inline-block;margin-top:10px;
  font-family:var(--font-sans);font-size:11px;
  color:var(--gold-soft);
  padding:4px 10px;border:1px dashed var(--gold-soft);
  border-radius:var(--radius-pill);
}

/* ============ P1b 目录树 ============ */
.catalog-tree{
  max-width:880px;margin:0 auto;
  padding:32px 24px 80px;
}
.cat-stage{
  margin-bottom:40px;
}
.cat-stage-head{
  display:flex;align-items:center;gap:12px;
  padding:12px 0;
  font-family:var(--font-serif);font-weight:600;font-size:20px;
  letter-spacing:.1em;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.cat-stage-head .stage-meta{
  font-family:var(--font-sans);font-size:11px;
  color:var(--gold-soft);letter-spacing:.2em;
  font-weight:400;
}
.cat-grade{
  margin-top:20px;
}
.cat-grade-head{
  font-family:var(--font-serif);font-weight:500;font-size:17px;
  color:var(--ink);
  padding:8px 0;display:flex;align-items:center;gap:10px;
}
.cat-grade-head::before{
  content:"";width:4px;height:14px;background:var(--vermilion);border-radius:1px;
}
.cat-grade-head .count{
  font-family:var(--font-sans);font-size:11px;color:var(--ink-soft);
  letter-spacing:.15em;font-weight:400;
}
.cat-unit{
  margin:6px 0 14px 14px;
}
.cat-unit-head{
  font-family:var(--font-sans);font-size:12px;letter-spacing:.15em;
  text-transform:uppercase;color:var(--ink-soft);
  padding:6px 0;
  border-bottom:1px dashed var(--line);
}
.cat-row{
  display:flex;align-items:center;gap:12px;
  padding:12px 8px;
  border-bottom:1px solid var(--line);
  cursor:pointer;transition:background .15s;
}
.cat-row:hover{background:rgba(60,50,30,.03)}
.cat-row .star{
  font-size:14px;color:var(--gold);width:16px;flex-shrink:0;
}
.cat-row .star.empty{color:var(--line)}
.cat-row .info{flex:1;min-width:0}
.cat-row .info .t{
  font-family:var(--font-serif);font-size:15px;color:var(--ink);
  font-weight:500;letter-spacing:.04em;
}
.cat-row .info .m{
  font-family:var(--font-sans);font-size:11px;color:var(--ink-soft);
  letter-spacing:.05em;margin-top:2px;
}
.cat-row .chev{color:var(--line);font-size:18px;flex-shrink:0}
.cat-row.placeholder{opacity:.5}
.cat-row.placeholder:hover{background:transparent}

/* ============ P2 详情页 ============ */
.detail-body{
  max-width:880px;margin:0 auto;
  padding:24px 20px 80px;
  position:relative;
}
/* hero 区微水墨底纹 */
.detail-body::before{
  content:"";
  position:absolute;
  top:0;left:50%;transform:translateX(-50%);
  width:90%;max-width:1200px;height:50vh;
  background:
    radial-gradient(ellipse 600px 200px at 20% 30%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 60%),
    radial-gradient(ellipse 800px 300px at 80% 60%, color-mix(in srgb, var(--accent) 5%, transparent), transparent 60%);
  pointer-events:none;
  z-index:-1;
}

.detail-back{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-sans);font-size:12px;
  color:var(--ink-soft);letter-spacing:.05em;
  margin-bottom:16px;
  cursor:pointer;
  background:transparent;border:0;padding:6px 8px 6px 0;
  transition:color .2s,transform .2s;
}
.detail-back:hover{color:var(--ink);transform:translateX(-2px)}
.detail-back svg,.detail-back svg *{pointer-events:none}

.detail-meta{
  font-family:var(--font-sans);font-size:10.5px;
  letter-spacing:.2em;text-transform:uppercase;
  color:var(--ink-soft);margin-bottom:10px;
  opacity:0;transform:translateY(8px);
  animation:revealUp .6s .1s forwards;
}
.detail-meta span{margin-right:14px}
.detail-meta span:last-child{margin-right:0}

.detail-title{
  font-family:var(--font-serif);font-weight:700;
  font-size:clamp(28px,5vw,44px);
  line-height:1.15;letter-spacing:.04em;
  color:var(--ink);margin-bottom:8px;
  position:relative;
}
.detail-title .ch{
  display:inline-block;
  opacity:0;transform:translateY(20px) rotate(2deg);
  animation:revealChar .5s forwards;
}

.detail-subtitle{
  font-family:var(--font-serif);font-size:15px;
  color:var(--ink-soft);font-weight:300;
  letter-spacing:.15em;margin-bottom:6px;
  opacity:0;animation:revealUp .6s .8s forwards;
}
.detail-summary{
  font-size:14px;line-height:1.7;color:var(--ink-soft);
  margin:0 0 20px;opacity:0;animation:revealUp .6s .95s forwards;
}

@keyframes revealChar{to{opacity:1;transform:translateY(0) rotate(0)}}
@keyframes revealUp{to{opacity:1;transform:translateY(0)}}

/* 视频区 */
.detail-video{
  margin:0 -8px 40px;
  aspect-ratio:16/9;
  background:#000;border-radius:var(--radius-card);
  overflow:hidden;position:relative;
}
.detail-video video{width:100%;height:100%;object-fit:cover;background:#000}
.detail-video .video-fs-btn{
  position:absolute;right:10px;top:10px;z-index:4;
  width:38px;height:38px;border:none;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,0,0,.58);color:#fff;cursor:pointer;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  transition:background .2s,transform .15s;
  pointer-events:auto;
}
.detail-video .video-fs-btn:hover{background:rgba(0,0,0,.78)}
.detail-video .video-fs-btn:active{transform:scale(.94)}
.detail-video.is-fullscreen,
.detail-video:fullscreen{
  position:fixed !important;inset:0 !important;z-index:500;
  width:100vw !important;height:100vh !important;max-height:100vh !important;margin:0 !important;
  border-radius:0 !important;aspect-ratio:auto !important;background:#000;
}
html.video-fs-lock,html.lb-lock{overflow:hidden}
.detail-video.is-fullscreen video,
.detail-video:fullscreen video{object-fit:contain}
.detail-video .no-video{
  position:absolute;inset:0;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:8px;color:var(--ink-soft);
  background:linear-gradient(135deg,#1a1f28 0%,#0a0d12 100%);
  font-family:var(--font-sans);font-size:12px;letter-spacing:.2em;
}

/* 章节标题（更紧凑） */
.chapter-label{
  font-family:var(--font-sans);font-size:10.5px;
  letter-spacing:.3em;color:var(--ink-soft);
  text-transform:uppercase;
  margin:24px 0 12px;
  display:flex;align-items:center;gap:10px;
}
.chapter-label::after{
  content:"";flex:1;height:1px;
  background:linear-gradient(to right,var(--line),transparent);
}

/* 分镜卷轴：纯图横滑，无字幕无编号 */
.storyboard-rail{
  display:flex;gap:10px;
  overflow-x:auto;padding-bottom:8px;
  scroll-snap-type:x mandatory;
  margin:0 -20px;padding-left:20px;padding-right:20px;
}
.storyboard-rail::-webkit-scrollbar{height:4px}
.storyboard-rail::-webkit-scrollbar-track{background:transparent}
.storyboard-rail::-webkit-scrollbar-thumb{background:var(--line);border-radius:2px}
.shot{
  flex:0 0 auto;
  width:140px;aspect-ratio:3/4;
  border-radius:6px;overflow:hidden;
  position:relative;cursor:pointer;
  scroll-snap-align:start;
  background:color-mix(in srgb, var(--paper) 90%, var(--ink) 6%);
  transition:transform .25s cubic-bezier(.2,.7,.2,1);
  border:1px solid var(--line);
}
.shot:hover{transform:scale(1.03)}
.shot img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;pointer-events:none}
.shot:hover img{transform:scale(1.06)}
.shot.linked{
  box-shadow:0 0 0 2px var(--accent);
  transform:scale(1.04);
}

/* 彩册页面（原文页 + 赏析页，竖版海报） */
.color-pages{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));
  gap:10px;
}
@media (max-width:520px){
  .color-pages{grid-template-columns:1fr 1fr;gap:8px}
}
.color-page{
  position:relative;cursor:pointer;
  border-radius:6px;overflow:hidden;
  background:color-mix(in srgb, var(--paper) 90%, var(--ink) 6%);
  aspect-ratio:3/4;
  border:1px solid var(--line);
  transition:transform .2s,box-shadow .2s;
}
.color-page:hover{
  transform:translateY(-2px);
  box-shadow:0 6px 14px rgba(40,30,15,.1);
}
.color-page img{width:100%;height:100%;object-fit:cover;display:block;pointer-events:none}
.color-page .page-label{
  position:absolute;top:6px;left:6px;
  padding:2px 7px;border-radius:var(--radius-pill);
  background:color-mix(in srgb, var(--accent) 90%, transparent);
  color:#fff;font-family:var(--font-serif);font-size:10px;
  letter-spacing:.15em;
}

 /* 原文 / 释义：横向滑动对照（每段一个 pair 卡片） */
.poem-block[open] summary{margin-bottom:8px}
.poem-scroll{
  display:flex;
  gap:14px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 0 12px;
  margin:0 -20px;padding-left:20px;padding-right:20px;
}
.poem-scroll::-webkit-scrollbar{height:4px}
.poem-scroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:2px}
.poem-pair{
  flex:0 0 86%;
  max-width:520px;
  scroll-snap-align:start;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
  background:color-mix(in srgb, var(--paper) 50%, var(--ink) 2%);
  border:1px solid var(--line);
  border-radius:8px;
  overflow:hidden;
}
@media (max-width:520px){
  .poem-pair{flex:0 0 92%;grid-template-columns:1fr}
}
.poem-original{
  font-family:var(--font-serif);font-weight:500;
  font-size:16px;line-height:2.1;letter-spacing:.08em;
  color:var(--ink);
  padding:18px 20px;
  position:relative;
}
.poem-original::before{
  content:"";
  position:absolute;left:0;top:18px;bottom:18px;
  width:3px;background:var(--accent);border-radius:0 2px 2px 0;
  opacity:.6;
}
.poem-explain{
  font-family:var(--font-sans);font-weight:400;
  font-size:13.5px;line-height:1.9;
  color:var(--ink-soft);
  padding:18px 20px;
  border-left:1px solid var(--line);
}
@media (max-width:520px){
  .poem-explain{border-left:0;border-top:1px solid var(--line)}
}

/* 长文本（创作背景/赏析 改用 details/summary 折叠） */
.prose-block{
  margin-top:16px;
  border-top:1px solid var(--line);
  padding-top:12px;
}
.prose-block summary{
  font-family:var(--font-sans);font-size:11px;
  letter-spacing:.3em;color:var(--ink-soft);
  text-transform:uppercase;
  cursor:pointer;padding:6px 0;
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;
  transition:color .2s;
}
.prose-block summary::-webkit-details-marker{display:none}
.prose-block summary:hover{color:var(--ink)}
.prose-block summary::after{
  content:"+";font-size:14px;color:var(--ink-soft);
  transition:transform .25s;
}
.prose-block[open] summary::after{content:"−"}
.prose-block .prose{
  margin-top:8px;
  font-family:var(--font-serif);font-weight:300;
  font-size:14.5px;line-height:2;color:var(--ink-soft);
  max-width:680px;
  animation:revealUp .35s ease;
}
.prose-block .prose p{margin-bottom:1.2em}

/* 兼容：原来 .prose 直接用在文档里（保留） */
.prose{
  font-family:var(--font-serif);font-weight:300;
  font-size:14.5px;line-height:2;color:var(--ink-soft);
  max-width:680px;
}
.prose p{margin-bottom:1.2em}

/* 详情底部操作栏（已废弃，保留兼容） */
.detail-actions{display:none !important}
.go-btn{display:none !important}

/* ============ Overlay ============ */
.overlay{
  position:fixed;inset:0;z-index:100;
  background:rgba(10,13,18,.6);
  backdrop-filter:blur(8px);
  display:flex;align-items:center;justify-content:center;
  padding:5vh 5vw;
  animation:fadeIn .25s;
}
.overlay[hidden]{display:none}
.overlay-inner{
  background:var(--paper);border-radius:12px;
  padding:32px;max-width:560px;width:100%;
  position:relative;
}
.overlay-close,.buy-close{
  position:absolute;top:12px;right:12px;
  width:32px;height:32px;border-radius:50%;
  background:rgba(0,0,0,.05);color:var(--ink-soft);
  font-size:20px;line-height:1;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s,color .2s;
}
.overlay-close:hover,.buy-close:hover{
  background:rgba(0,0,0,.1);color:var(--ink);
}

/* 搜索 */
.overlay-inner input{
  width:100%;
  border:1px solid var(--line);
  padding:14px 18px;border-radius:var(--radius-pill);
  font-size:15px;margin-bottom:20px;
  background:var(--paper);
}
.overlay-inner input:focus{outline:none;border-color:var(--gold-soft)}
.search-results{max-height:50vh;overflow-y:auto}
.search-results .result{
  display:block;padding:12px 14px;border-radius:6px;
  cursor:pointer;transition:background .15s;
}
.search-results .result:hover{background:var(--paper)}
.search-results .result .t{
  font-family:var(--font-serif);font-size:15px;color:var(--ink);
}
.search-results .result .m{
  font-family:var(--font-sans);font-size:11px;color:var(--ink-soft);
  margin-top:2px;letter-spacing:.05em;
}
.search-results .empty{
  padding:40px 14px;text-align:center;color:var(--ink-soft);
  font-family:var(--font-sans);font-size:13px;
}

/* P3 下载弹层 */
.buy-card{
  background:var(--paper);
  border-radius:12px;padding:40px;max-width:520px;width:100%;
  position:relative;
}
.buy-card .buy-label{
  font-family:var(--font-sans);font-size:10px;letter-spacing:.4em;
  color:var(--gold-soft);text-transform:uppercase;margin-bottom:14px;
}
.buy-card .buy-title{
  font-family:var(--font-serif);font-weight:600;
  font-size:24px;color:var(--ink);line-height:1.4;
  margin-bottom:8px;
}
.buy-card .buy-sub{
  font-family:var(--font-sans);font-size:13px;color:var(--ink-soft);
  line-height:1.8;margin-bottom:28px;
}
.buy-card .buy-grid{
  display:grid;grid-template-columns:120px 1fr;gap:20px;
  margin-bottom:24px;
}
.buy-card .buy-preview{
  aspect-ratio:9/16;
  background:#1a1f28;border-radius:6px;overflow:hidden;
}
.buy-card .buy-preview img{width:100%;height:100%;object-fit:cover}
.buy-card .buy-list{
  font-family:var(--font-sans);font-size:13px;color:var(--ink);
  line-height:2;align-self:center;
}
.buy-card .buy-list li{list-style:none}
.buy-card .buy-list li::before{content:"·";color:var(--gold);margin-right:8px}
.buy-card .disclaimer{
  font-family:var(--font-sans);font-size:11px;
  color:var(--ink-soft);line-height:1.6;
  padding:12px;background:var(--paper);border-radius:4px;
  margin-bottom:20px;
}
.buy-card .download-btn{
  display:block;width:100%;
  background:var(--gold);color:var(--night);
  padding:16px;border-radius:var(--radius-pill);
  font-family:var(--font-serif);font-weight:600;font-size:15px;
  letter-spacing:.2em;text-align:center;
  transition:background .2s;
}
.buy-card .download-btn:hover{background:var(--gold-soft);color:#fff}
.buy-card .download-btn[disabled]{opacity:.6;cursor:not-allowed}

/* ============ Lightbox ============ */
.lightbox{
  position:fixed;inset:0;z-index:200;
  background:rgba(0,0,0,.92);
  animation:fadeIn .2s;
}
.lightbox[hidden]{display:none}
.lightbox .lb-stage{
  position:absolute;inset:0;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  padding:0;
  box-sizing:border-box;
}
.lightbox .lb-stage img{
  width:100vw;height:100vh;
  max-width:100vw;max-height:100vh;
  object-fit:contain;
  object-position:50% 50%;
  cursor:pointer;
  user-select:none;-webkit-user-drag:none;
  will-change:transform;
}
.lightbox .lb-stage img.lb-zoom-in{
  animation:lbZoomIn .26s cubic-bezier(.2,.7,.2,1) forwards;
}
@keyframes lbZoomIn{
  from{transform:scale(.42);opacity:.55}
  to{transform:scale(1);opacity:1}
}
.lightbox .lb-close{
  position:absolute;top:max(12px,var(--safe-top,0px));right:max(12px,env(safe-area-inset-right));z-index:3;
  width:40px;height:40px;border-radius:50%;border:none;
  background:rgba(255,255,255,.12);color:#fff;
  font-size:24px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s;
}
.lightbox .lb-close:hover{background:rgba(255,255,255,.22)}
.lightbox .lb-prev,.lightbox .lb-next{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:48px;height:48px;border-radius:50%;border:none;
  background:rgba(255,255,255,.08);color:#fff;
  font-size:32px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s;
}
.lightbox .lb-prev{left:18px}
.lightbox .lb-next{right:18px}
.lightbox .lb-prev:hover,.lightbox .lb-next:hover{background:rgba(255,255,255,.18)}
.lightbox .lb-caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:28px 16px max(16px,env(safe-area-inset-bottom));
  background:linear-gradient(transparent,rgba(0,0,0,.55));
  text-align:center;color:rgba(255,255,255,.9);
  font-family:var(--font-serif);font-size:13px;letter-spacing:.1em;
  pointer-events:none;
}

/* ============ Toast ============ */
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%);
  background:var(--ink);color:#fff;
  padding:12px 24px;border-radius:var(--radius-pill);
  font-family:var(--font-sans);font-size:13px;letter-spacing:.1em;
  z-index:300;
  animation:fadeIn .2s;
}
.toast[hidden]{display:none}

/* 移动端 */
@media (max-width:520px){
  .topbar{padding:0 14px}
  .topbar .brand{font-size:14px;letter-spacing:.4em}
  .tabs-primary{padding:0 14px}
  .tab{padding:12px 14px;font-size:14px}
  .detail-body{padding:24px 16px 84px}
  .detail-actions{
    padding:10px 14px;
    padding-bottom:max(10px, env(safe-area-inset-bottom, 10px));
  }
  .go-btn{padding:8px 18px;font-size:13px}
  .buy-card{padding:28px 20px}
}