/* ===== 乐谱资料 · 乐谱库 ===== */
#sheet{display:block;background:var(--bg);color:var(--text);
  font:15px/1.5 -apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",sans-serif;
  min-height:100vh;padding-top:var(--header-h,52px)}
#sheet *{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
#sheet a{color:inherit;text-decoration:none}
#sheet button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
#sheet input,#sheet select{font:inherit;color:inherit}
#sheet .wrap{max-width:1240px;margin:0 auto;padding:0 20px}

/* ---------- 头部 ---------- */
#sheet .hero{position:relative;overflow:hidden;padding:44px 0 26px;
  background:linear-gradient(180deg,var(--mist),var(--bg))}
#sheet .hero .mist{position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(720px 260px at 50% -60px,var(--mist-glow),var(--mist-glow-0) 70%)}
#sheet .hero .wrap{position:relative}
#sheet .eyebrow{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--blue);font-weight:600}
#sheet .hero h1{margin:8px 0 0;font-size:40px;line-height:1.15;letter-spacing:-.02em}
#sheet .lede{margin:10px 0 0;color:var(--text-2);font-size:15px;max-width:640px}
#sheet .stats{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap;justify-content:center}
#sheet .stat{background:var(--bg-elevated);border:1px solid var(--border);border-radius:14px;padding:12px 18px;
  min-width:104px;flex:1 1 0;text-align:center;box-shadow:var(--shadow-sm)}
#sheet .stat b{display:block;font-size:22px;line-height:1.25;font-variant-numeric:tabular-nums}
#sheet .stat span{font-size:12px;color:var(--text-3)}

/* ---------- 工具栏 ---------- */
#sheet .bar{position:sticky;top:var(--header-h,52px);z-index:40;
  background:var(--bg-glass);backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--border);margin-bottom:18px}
#sheet .bar-in{display:flex;gap:12px;align-items:center;flex-wrap:wrap;padding:11px 0}
#sheet .search{position:relative;flex:1 1 230px;min-width:170px}
#sheet .search input{width:100%;border:1px solid var(--border);background:var(--bg-elevated);
  border-radius:999px;padding:9px 14px 9px 34px;font-size:14px;outline:none;transition:.15s}
#sheet .search input:focus{border-color:var(--blue);box-shadow:0 0 0 3px color-mix(in srgb,var(--blue) 14%,transparent)}
#sheet .search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-3)}
#sheet .tools{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
#sheet .tbtn{border:1px solid var(--border);background:var(--bg-elevated);border-radius:999px;
  padding:8px 14px;font-size:13px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;transition:.15s}
#sheet .tbtn:hover{border-color:var(--blue);color:var(--blue)}
#sheet select.tbtn{padding-right:8px}
#sheet .cnt{font-size:13px;color:var(--text-3);margin-left:auto;white-space:nowrap}
#sheet .chips{display:flex;gap:7px;flex-wrap:wrap}
#sheet .chip{border:1px solid var(--border);background:var(--bg-elevated);border-radius:999px;
  padding:5px 12px;font-size:12.5px;color:var(--text-2);transition:.15s;white-space:nowrap}
#sheet .chip:hover{border-color:var(--blue);color:var(--blue)}
#sheet .chip.on{background:var(--blue);border-color:var(--blue);color:#fff}
#sheet .chip .n{opacity:.6;margin-left:4px;font-size:11px}
#sheet .frow{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:9px 0}
#sheet .frow+.frow{border-top:1px solid var(--border);margin-top:9px}
#sheet .flabel{font-size:12px;color:var(--text-3);flex:0 0 auto;min-width:32px}

/* ---------- 筛选行折叠（搜索框不收） ---------- */
#sheet .frows{display:grid;grid-template-rows:1fr;transition:grid-template-rows .28s var(--ease-out,ease)}
#sheet .frows-in{overflow:hidden;min-height:0}
#sheet.fcut .frows{grid-template-rows:0fr}
#sheet .f-toggle{padding:8px 10px}
#sheet .f-toggle svg{transition:transform .22s}
#sheet.fcut .f-toggle svg{transform:rotate(180deg)}

/* ---------- 卡片墙：乐谱封面用 3/4 竖版 ---------- */
#sheet .wall{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:16px}
#sheet .sc{border-radius:14px;overflow:hidden;position:relative;cursor:pointer;text-align:left;
  background:var(--bg-tinted);box-shadow:var(--shadow-sm);border:1px solid var(--border);
  transition:transform .2s var(--ease-out),box-shadow .2s var(--ease-out);
  display:flex;flex-direction:column;padding:0}
#sheet .sc:hover,#sheet .sc:focus-visible{transform:translateY(-4px);box-shadow:var(--shadow-md);outline:none}
#sheet .sc .cov{position:relative;aspect-ratio:3/4;overflow:hidden;background:var(--bg-tinted)}
#sheet .sc .cov img{width:100%;height:100%;object-fit:cover;object-position:top center;display:block;
  transition:transform .3s var(--ease-out);-webkit-user-drag:none;user-select:none}
#sheet .sc:hover .cov img{transform:scale(1.04)}
#sheet .sc .cov .ph{width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  font-size:30px;font-weight:800;color:#fff;text-align:center;padding:0 10%;word-break:break-all;user-select:none}
#sheet .sc .kind{position:absolute;top:8px;left:8px;z-index:2;background:rgba(0,0,0,.58);color:#fff;
  border-radius:7px;padding:2px 7px;font-size:10.5px;backdrop-filter:blur(6px)}
#sheet .sc .has-audio{position:absolute;top:8px;right:8px;z-index:2;width:22px;height:22px;border-radius:50%;
  background:rgba(0,0,0,.58);color:#fff;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(6px)}
/* 浏览数：封面左下角极简小药丸，不占位 */
#sheet .sc .vcount{position:absolute;left:9px;bottom:7px;z-index:2;display:inline-flex;align-items:center;gap:3px;
  background:none;box-shadow:none;color:rgba(0,0,0,.3);padding:0;font-size:10.5px;line-height:1.4;font-weight:500;
  pointer-events:none}
#sheet .sc .vcount svg{width:11px;height:11px;flex:0 0 auto;opacity:.7}
#sheet .sc .vcount .card-views-num{font-variant-numeric:tabular-nums}
#sheet .sc .sbody{padding:10px 11px 12px;display:flex;flex-direction:column;gap:4px;flex:1}
#sheet .sc .st{font-size:13.5px;font-weight:600;line-height:1.35;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
#sheet .sc .sa{font-size:11.5px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#sheet .sc .ss{font-size:12px;color:var(--text-3);letter-spacing:-.5px;margin-top:auto;padding-top:2px}
#sheet .sc .ss .n{color:var(--text-3);font-size:10.5px;letter-spacing:0;margin-left:3px}
#sheet .empty{text-align:center;color:var(--text-3);padding:70px 0;font-size:14px}
#sheet .foot{max-width:1240px;margin:0 auto;padding:26px 20px 60px;text-align:center;font-size:12px;
  color:var(--text-3);line-height:1.8}

/* ---------- 详情弹层 ---------- */
#sheet .modal{position:fixed;inset:0;z-index:500;display:none}
#sheet .modal.on{display:block}
#sheet .m-bg{position:absolute;inset:0;background:rgba(0,0,0,.55);backdrop-filter:blur(4px);animation:sh-fade .2s}
#sheet .m-card{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:min(1120px,96vw);max-height:94vh;overflow:auto;background:var(--bg-elevated);
  border-radius:20px;box-shadow:0 30px 80px rgba(0,0,0,.35);animation:sh-pop .24s var(--ease-spring);
  border:1px solid var(--border)}
@keyframes sh-fade{from{opacity:0}to{opacity:1}}
@keyframes sh-pop{from{opacity:0;transform:translate(-50%,-46%) scale(.97)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}
#sheet .m-top{display:flex;gap:20px;padding:24px 26px 14px}
#sheet .m-info{flex:1;min-width:0;padding-top:2px}
#sheet .m-kind{font-size:11px;color:var(--blue);font-weight:600;letter-spacing:.08em}
#sheet .m-info h2{margin:6px 0 3px;font-size:25px;line-height:1.2;letter-spacing:-.01em}
#sheet .m-artist{color:var(--text-3);font-size:13px}
#sheet .m-stars{color:#ffd60a;font-size:15px;letter-spacing:1px;margin-top:9px}
#sheet .m-stars .dim{color:var(--border)}
#sheet .m-stars .none{color:var(--text-3);font-size:12px;letter-spacing:0}
#sheet .m-rows{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
#sheet .m-row{font-size:12px;color:var(--text-2);background:var(--bg-tinted);border-radius:8px;padding:5px 10px}
#sheet .m-row b{color:var(--text);font-weight:600}

/* ---------- 卡内 tab ---------- */
#sheet .m-tabs{display:flex;gap:6px;padding:0 26px;border-bottom:1px solid var(--border);margin-top:2px}
#sheet .mtab{padding:9px 16px;font-size:13.5px;font-weight:600;color:var(--text-3);
  border-bottom:2px solid transparent;margin-bottom:-1px;transition:.15s}
#sheet .mtab:hover{color:var(--blue)}
#sheet .mtab.on{color:var(--blue);border-bottom-color:var(--blue)}
#sheet .mtab[hidden]{display:none}

#sheet .m-body{padding:16px 24px 24px;display:flex;flex-direction:column;min-height:0}
#sheet .mtab-panel[hidden]{display:none}
#sheet .stage-wrap{position:relative;display:flex;align-items:center;justify-content:center;width:100%}
#sheet .stage{display:block;width:100%;position:relative}
/* 谱面：按原始比例尽可能大地铺满卡片宽度，高度上限由 JS 按视口算（--sheet-img-h）
   ⚠️ 只用 max-width/max-height，不给 width/height 定值 —— 保证不变形 */
#sheet .stage img{max-width:100%;max-height:var(--sheet-img-h,66vh);width:auto;height:auto;
  border-radius:12px;border:1px solid var(--border);
  background:#fff;display:block;-webkit-user-drag:none;user-select:none;-webkit-touch-callout:none;
  margin:0 auto;cursor:zoom-in}
#sheet .stage .pgwrap{display:none;justify-content:center;width:100%}
#sheet .stage .pgwrap.on{display:flex}
#sheet .m-empty{margin:0;font-size:14px;line-height:1.8;color:var(--text-3)}

/* ---------- 谱页翻页 ---------- */
#sheet .pg-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--bg-glass);backdrop-filter:saturate(180%) blur(20px);
  border:1px solid var(--border);color:var(--text-2);box-shadow:var(--shadow-sm);transition:.15s}
#sheet .pg-nav:hover:not(:disabled){border-color:var(--blue);color:var(--blue);background:var(--bg-elevated)}
#sheet .pg-nav:disabled{opacity:.28;cursor:default}
#sheet .pg-nav[hidden]{display:none}
#sheet .pg-prev{left:6px}
#sheet .pg-next{right:6px}
#sheet .pg-strip{display:flex;gap:7px;justify-content:center;align-items:center;margin-top:14px;flex-wrap:wrap}
#sheet .pg-strip[hidden]{display:none}
#sheet .pg-dot{width:9px;height:9px;border-radius:50%;background:var(--border);border:0;padding:0;
  cursor:pointer;transition:.18s}
#sheet .pg-dot:hover{background:var(--text-3)}
#sheet .pg-dot.on{background:var(--blue);width:22px;border-radius:5px}

/* ---------- 讲解面板（文章正文移植）---------- */
#sheet .m-lesson{font-size:14px;line-height:1.85;color:var(--text-2)}
#sheet .m-lesson>*:first-child{margin-top:0}
#sheet .m-lesson h1{font-size:19px;font-weight:700;color:var(--text);margin:24px 0 10px;letter-spacing:-.01em;
  padding-bottom:7px;border-bottom:1px solid var(--border)}
#sheet .m-lesson h2{font-size:16px;font-weight:700;color:var(--text);margin:20px 0 8px}
#sheet .m-lesson h3{font-size:14.5px;font-weight:600;color:var(--text);margin:16px 0 6px}
#sheet .m-lesson p{margin:10px 0}
#sheet .m-lesson ul,#sheet .m-lesson ol{margin:10px 0;padding-left:22px}
#sheet .m-lesson li{margin:5px 0}
#sheet .m-lesson strong{color:var(--text);font-weight:700}
#sheet .m-lesson hr{border:0;border-top:1px solid var(--border);margin:20px 0}
#sheet .m-lesson img{max-width:100%;border-radius:10px;display:block;margin:12px 0;
  -webkit-user-drag:none;user-select:none;-webkit-touch-callout:none}
#sheet .m-lesson blockquote{margin:12px 0;padding:10px 14px;background:var(--mist);
  border-left:3px solid var(--blue);border-radius:0 10px 10px 0;color:var(--text)}
#sheet .m-lesson blockquote p{margin:4px 0}
#sheet .m-lesson blockquote h1,#sheet .m-lesson blockquote h2,#sheet .m-lesson blockquote h3{
  border:0;padding:0;margin:4px 0;font-size:15px}
#sheet .m-lesson table{width:100%;border-collapse:collapse;margin:14px 0;font-size:13.5px;
  font-variant-numeric:tabular-nums}
#sheet .m-lesson th,#sheet .m-lesson td{border:1px solid var(--border);padding:7px 10px;text-align:center;
  color:var(--text)}
#sheet .m-lesson th{background:var(--bg-tinted);font-weight:600}
#sheet .m-lesson td:empty{background:var(--bg-tinted);opacity:.5}
#sheet .m-lesson code{background:var(--bg-tinted);border-radius:5px;padding:1px 5px;font-size:12.5px}
#sheet .m-lesson a{color:var(--blue);text-decoration:underline;text-underline-offset:2px}
/* 页码指示：tabs 行右端，不遮挡谱面 */
#sheet .m-page{margin-left:auto;font-size:12px;font-weight:500;color:var(--text-3);
  letter-spacing:.04em;align-self:center;user-select:none}
#sheet .m-x{position:absolute;top:12px;right:12px;width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;background:var(--bg-tinted);color:var(--text-2);z-index:3;transition:.15s}
#sheet .m-x:hover{background:var(--blue);color:#fff}
#sheet .m-share{position:absolute;top:12px;right:52px;width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;background:var(--bg-tinted);color:var(--text-2);z-index:3;transition:.15s}
#sheet .m-share:hover{background:var(--blue);color:#fff}
.sh-toast{position:fixed;left:50%;bottom:40px;transform:translate(-50%,10px);z-index:800;
  background:rgba(24,24,28,.88);color:#fff;font-size:12.5px;padding:9px 16px;border-radius:999px;
  opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.sh-toast.on{opacity:1;transform:translate(-50%,0)}
#sheet .m-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;background:var(--bg-elevated);color:var(--text-2);
  border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:.15s}
#sheet .m-nav:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
#sheet .m-prev{left:14px}
#sheet .m-next{right:14px}

/* ---------- 悬浮播放条（卡片外，贴弹层底部） ---------- */
#sheet .pbar{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);z-index:6;
  width:min(880px,94vw);display:flex;align-items:center;gap:12px;
  background:var(--bg-glass);backdrop-filter:saturate(180%) blur(20px);
  border:1px solid var(--border);border-radius:16px;padding:10px 14px;
  box-shadow:0 16px 40px rgba(0,0,0,.28);animation:sh-pop .24s var(--ease-spring)}
#sheet .pbar[hidden]{display:none}
#sheet .pb-play{width:36px;height:36px;flex:0 0 36px;border-radius:50%;background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;transition:.15s}
#sheet .pb-play:hover{opacity:.88}
#sheet .pb-play .ico-play[hidden],#sheet .pb-play .ico-pause[hidden]{display:none}
#sheet .pb-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
#sheet .pb-name{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  display:flex;align-items:center;gap:6px}
/* 「现在在不在响」只能靠自己记录 —— 跨域问不到 B 站真实状态 */
#sheet .pb-name.live::before{content:'';flex:0 0 auto;width:6px;height:6px;border-radius:50%;
  background:var(--blue);animation:sh-live 1.15s ease-in-out infinite}
@keyframes sh-live{0%,100%{opacity:.25}50%{opacity:1}}
@media (prefers-reduced-motion:reduce){#sheet .pb-name.live::before{animation:none;opacity:1}}
/* 多音轨：曲名可点切换 */
#sheet .pb-name.sw{cursor:pointer}
#sheet .pb-name.sw::after{content:'⇄';flex:0 0 auto;font-size:11px;color:var(--blue);
  border:1px solid var(--blue);border-radius:8px;padding:0 5px;line-height:14px}
#sheet .pb-sub{font-size:11.5px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#sheet .pb-time{font-size:11.5px;color:var(--text-3);white-space:nowrap}
#sheet .pb-dl{width:34px;height:34px;flex:0 0 34px;border-radius:11px;border:1px solid var(--border);
  background:var(--bg-elevated);color:var(--text-2);display:flex;align-items:center;justify-content:center;transition:.15s}
#sheet .m-print{width:34px;height:34px;flex:0 0 34px;border-radius:11px;border:1px solid var(--border);
  background:var(--bg-elevated);color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;margin-left:auto;transition:.15s}
#sheet .m-print:hover{border-color:var(--blue);color:var(--blue)}
#sheet .m-print[hidden]{display:none}

#sheet .pb-dl:hover{border-color:var(--blue);color:var(--blue)}
#sheet .pb-dl.busy{opacity:.55;pointer-events:none;cursor:progress}
#sheet .pb-go{width:34px;height:34px;flex:0 0 34px;border-radius:11px;border:1px solid var(--border);
  background:var(--bg-elevated);color:var(--text-2);display:flex;align-items:center;justify-content:center;transition:.15s}
#sheet .pb-go:hover{border-color:var(--blue);color:var(--blue)}
#sheet .pb-go[hidden]{display:none}
#sheet .pb-go a{position:absolute;width:0;height:0;overflow:hidden;opacity:0}

/* ---------- 进度条（可拖动 seek） ---------- */
#sheet .pb-prog{position:absolute;left:0;right:0;top:0;height:6px;background:var(--border);
  cursor:pointer;z-index:1;border-radius:16px 16px 0 0;overflow:hidden}
/* 透明热区：把只有 6px 的可视条扩成约 20px 的可点/可拖区域 */
#sheet .pb-prog::before{content:'';position:absolute;left:0;right:0;top:-7px;bottom:-7px}
#sheet .pb-prog-fill{position:absolute;left:0;top:0;height:100%;width:0;background:var(--blue);pointer-events:none}
#sheet .pb-prog[hidden]{display:none}
#sheet .pb-prog.disabled{opacity:.35;cursor:default}
/* 让按钮浮在进度条热区之上，避免抢走播放/下载等点击 */
#sheet .pb-play,#sheet .pb-main,#sheet .pb-time,#sheet .pb-tools,#sheet .pb-dl,#sheet .pb-go{position:relative;z-index:2}

/* ---------- 调速（仅本地音频显示） ---------- */
#sheet .pb-tools{display:flex;align-items:center;gap:2px;flex:0 0 auto;
  border:1px solid var(--border);border-radius:11px;background:var(--bg-elevated);padding:2px 4px}
#sheet .pb-tools[hidden]{display:none}
#sheet .pb-sp{width:24px;height:28px;border-radius:8px;color:var(--text-2);
  display:flex;align-items:center;justify-content:center;transition:.15s}
#sheet .pb-sp:hover{background:var(--mist);color:var(--blue)}
/* 倍速输入框（可直接键入 0.50–2.00） */
#sheet .pb-rate{font:inherit;font-size:11.5px;font-weight:600;color:var(--text-2);
  width:52px;min-width:52px;text-align:center;font-variant-numeric:tabular-nums;
  background:var(--bg-elevated);border:1px solid var(--border);border-radius:8px;
  padding:5px 2px;outline:0;transition:border-color .15s}
#sheet .pb-rate:focus{border-color:var(--blue)}

/* ---------- 全屏放大层（看谱优先：谱最大、控件让路） ---------- */
/* ⚠️ .lbox 不在 #sheet 内，#sheet 的按钮重置够不到这里 —— 必须自己重置 */
/* ⚠️ 用 :where 把重置降到 0 优先级 —— 否则 (0,1,1) 会压过 .lb-x 等单类选择器
   类规则（0,1,0），球的背景/边框全被 background:none;border:0 吃掉（黑球隐形） */
:where(.lbox) button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;padding:0}
.lbox input{font:inherit}
.lbox{position:fixed;inset:0;z-index:900;background:#0b0d10;display:flex;
  flex-direction:column;animation:sh-fade .18s}
.lbox[hidden]{display:none}
.lb-top{position:absolute;top:0;left:0;right:0;z-index:4;display:flex;align-items:center;gap:12px;
  padding:12px 16px;color:#fff;pointer-events:none;
  background:linear-gradient(180deg,rgba(0,0,0,.55),transparent)}
.lb-top>*{pointer-events:auto}
.lb-title{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  flex:1;min-width:0;text-shadow:0 1px 3px rgba(0,0,0,.6)}
.lb-count{font-size:12.5px;color:rgba(255,255,255,.75);font-variant-numeric:tabular-nums;
  white-space:nowrap}
.lb-x{width:34px;height:34px;flex:0 0 34px;border-radius:50%;color:#fff;display:flex;
  align-items:center;justify-content:center;background:rgba(255,255,255,.14);transition:.15s}
.lb-x:hover{background:rgba(255,255,255,.28)}

.lb-stage{flex:1;min-height:0;position:relative;padding:44px 0 10px;overflow:hidden}
/* 覆盖 main.css 画廊灯箱的 .lb-stage{max-height:calc(100vh-132px)}（为播放面板预留的 132px，
   播放面板已移除，不覆盖会留下底部黑区） */
.lbox .lb-stage{max-height:none}
/* 默认按高度铺满（fit-height）：横版谱纵向顶满、左右溢出可拖动；竖版谱同效。
   缩放靠 transform（点图/滚轮/双指），尺寸由 JS 按 naturalWidth×base 设定 */
.lb-stage img{position:absolute;left:50%;top:50%;max-width:none;max-height:none;
  transform-origin:50% 50%;will-change:transform;opacity:0;transition:opacity .15s;
  -webkit-user-drag:none;user-select:none;-webkit-touch-callout:none;cursor:zoom-in}
.lb-stage img.rdy{opacity:1}
.lb-stage.z img{cursor:grab}
.lb-stage.drag img{cursor:grabbing}
.lb-tip{position:absolute;left:0;right:0;bottom:10px;text-align:center;pointer-events:none;
  font-size:12px;color:rgba(255,255,255,.4)}

/* 左右切换：贴边、半透明，不压谱面 */
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:4;
  width:46px;height:46px;border-radius:50%;color:#fff;display:flex;align-items:center;
  justify-content:center;background:rgba(255,255,255,.12);transition:.15s}
.lb-nav:hover:not(:disabled){background:rgba(255,255,255,.26)}
.lb-nav:disabled{opacity:.22;cursor:default}
.lb-nav[hidden]{display:none}
.lb-prev{left:14px}
.lb-next{right:14px}


/* ---------- B 站声源宿主：只出声，不显示画面（移到视口外） ---------- */
.vaudio{display:none;position:fixed;left:-2000px;top:0;width:480px;height:270px;
  border:0;overflow:hidden;pointer-events:none}
.vaudio.show{display:block}
.vaudio iframe{width:100%;height:100%;border:0;display:block}

@media (max-width:760px){
  #sheet .hero h1{font-size:29px}
  #sheet .stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;max-width:460px;margin-left:auto;margin-right:auto}
  #sheet .stat{min-width:0;padding:9px 4px}
  #sheet .stat b{font-size:17px}
  #sheet .stat span{font-size:10.5px}
  #sheet .wall{grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:11px}
  #sheet .modal .m-top{padding:20px 20px 12px}
  #sheet .m-info h2{font-size:21px}
  #sheet .m-tabs{padding:0 20px}
  #sheet .m-body{padding:14px 20px 20px}
  #sheet .stage img{max-height:60vh}
  #sheet .tbtn,#sheet .chip{font-size:12px;padding:7px 11px}
  #sheet .cnt{display:none}
  #sheet .pbar{width:94vw;bottom:12px;gap:9px;padding:9px 11px}
  #sheet .pb-time{display:none}
  #sheet .pg-nav{width:36px;height:36px}
  #sheet .pg-prev{left:2px}
  #sheet .pg-next{right:2px}
  #sheet .pb-rate{min-width:38px;font-size:11px}
}
@media (prefers-reduced-motion:reduce){
  #sheet *{animation:none!important;transition:none!important}
}