*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font:14px/1.6 var(--font-ui);letter-spacing:.01em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
button,input,select,textarea{font-family:inherit}
button{font:inherit;letter-spacing:inherit;color:inherit}
.group-h h2,.sec-h h3,.info-h h3{font-weight:600}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
code,.mono,details.code pre{font-family:var(--font-mono);font-size:12px;letter-spacing:0;font-variant-numeric:tabular-nums}
/* 动画容器沿用改版前的字体栈与字距；样本自有字体不受影响 */
.host{font-family:var(--font-legacy);letter-spacing:normal}

/* 侧栏 */
.side{position:fixed;left:0;top:0;bottom:0;z-index:20;width:236px;display:flex;flex-direction:column;gap:12px;padding:16px 14px 12px;background:var(--panel);border-right:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;padding:0 4px}
.brand i{flex:none;width:28px;height:28px;border-radius:8px;display:grid;place-items:center;background:var(--ink);color:var(--panel)}
.brand b{display:block;font-size:15px;font-weight:600;line-height:1.25;letter-spacing:.01em}
.brand small{display:block;color:var(--ink-3);font-size:11.5px;line-height:1.35}
.search{display:flex;align-items:center;gap:8px;height:32px;padding:0 10px;border:1px solid var(--line);border-radius:9px;background:var(--surface-2);transition:border-color .15s,background-color .15s}
.search:focus-within{border-color:var(--focus);background:var(--panel)}
.search input{flex:1;min-width:0;border:0;outline:0;background:none;color:var(--ink);font:inherit;font-size:13px;line-height:1.4}
.search input::placeholder{color:var(--ink-3);opacity:1}
.search input::-webkit-search-cancel-button{cursor:pointer}
.search svg{flex:none;color:var(--ink-3)}
.navs{flex:1;min-height:0;overflow:auto;display:flex;flex-direction:column;gap:1px;margin:0 -4px;padding:0 4px}
.nav-summary{padding:0 8px 5px;color:var(--ink-3);font-size:11px;line-height:1.4;font-variant-numeric:tabular-nums}
.nav-group{flex:none;padding:8px 0 9px;border-top:1px solid var(--line)}
.nav-summary+.nav-group{padding-top:0;border-top:0}
.lbl{margin:0 8px 4px;color:var(--ink-3);font-size:11px;font-weight:600;line-height:1.4;letter-spacing:.02em}
.lbl:first-child{margin-top:0}
.nav{position:relative;display:flex;align-items:center;gap:9px;width:100%;min-height:30px;padding:4px 8px;border:0;border-radius:8px;background:none;text-align:left;cursor:pointer;color:var(--ink-2);font-size:13.5px;line-height:1.35;transition:background-color .15s,color .15s}
.nav:hover{background:var(--surface-2);color:var(--ink)}
.nav.cur{background:color-mix(in srgb,var(--c) 12%,transparent);color:var(--ink);font-weight:600}
.nav .dot{flex:none;width:8px;height:8px;border-radius:3px;background:var(--c);opacity:.85}
.nav span{flex:1}
.nav em{font-style:normal;font-weight:400;min-width:22px;padding:0 6px;border-radius:99px;background:var(--surface-2);color:var(--ink-3);font-size:11px;line-height:18px;text-align:center;letter-spacing:0;font-variant-numeric:tabular-nums}
.nav.cur em{background:var(--panel);color:var(--ink-2)}
.nav.off{opacity:.4}
.nav:disabled{cursor:default;background:none}
.format-filter{display:flex;flex:none;gap:2px;padding:3px;border:1px solid var(--line);border-radius:8px;background:var(--surface-2)}
.format-filter button{flex:1;min-width:0;padding:3px 2px;border:0;border-radius:5px;background:none;cursor:pointer;color:var(--ink-2);font-size:12px;line-height:1.5;white-space:nowrap}
.format-filter button[aria-pressed="true"]{background:var(--panel);color:var(--ink);box-shadow:0 1px 3px #0001;font-weight:600}
.format-filter button:hover{color:var(--ink)}
/* 底部：动效与主题按钮并排，按钮宽度随文字；发布版的语言切换在上方独占一行 */
.tools{display:grid;grid-template-columns:minmax(max-content,1fr) max-content;gap:6px;padding-top:10px;border-top:1px solid var(--line)}
.tbtn{display:inline-flex;align-items:center;justify-content:center;gap:5px;min-width:max-content;height:30px;padding:0 7px;border:1px solid var(--line);border-radius:8px;background:var(--panel);cursor:pointer;white-space:nowrap;font-size:12.5px;line-height:1;color:var(--ink-2);transition:border-color .15s,background-color .15s,color .15s}
.tbtn b{font-weight:500;white-space:nowrap}
.tbtn:hover{border-color:var(--line-2);color:var(--ink)}
.tbtn[aria-pressed="true"]{background:var(--ink);color:var(--panel);border-color:var(--ink)}
.tbtn svg{flex:none}

/* 主区 */
#main{margin-left:236px;padding:22px 28px 80px;max-width:1500px}
.catalog-group+.catalog-group{margin-top:44px;padding-top:24px;border-top:1px solid var(--line-2)}
.group-h{margin-bottom:22px}
.group-h h2{margin:0;font-size:22px;line-height:1.3;letter-spacing:0}
.sec{scroll-margin-top:var(--nav-offset,20px);margin-bottom:34px}
.catalog-group .sec:last-child{margin-bottom:0}
.sec-h{display:flex;align-items:baseline;gap:10px;margin:0 0 12px}
.sec-h h3{margin:0;flex:none;font-size:16px;letter-spacing:.01em}
.sec-h em{font-style:normal;color:var(--ink-3);font-size:12.5px}
.sec-h p{margin:0 0 0 6px;min-width:0;color:var(--ink-3);font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.sample-group+.sample-group{margin-top:22px}
.sample-group h4{display:flex;align-items:center;gap:8px;margin:0 0 10px;color:var(--ink-2);font-size:12px;font-weight:500}
.sample-group h4 span{font-size:11px;color:var(--ink-3)}
.empty{padding:60px;text-align:center;color:var(--ink-3)}

/* 卡片 */
.card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:12px;background:var(--panel);overflow:hidden;cursor:pointer;text-align:left;padding:0;transition:border-color .15s,box-shadow .2s,transform .2s cubic-bezier(.2,.7,.3,1)}
.card:hover{border-color:var(--line-2);box-shadow:var(--shadow);transform:translateY(-2px)}
.view{position:relative;aspect-ratio:16/9;background:var(--surface);border-bottom:1px solid var(--line);overflow:hidden}
.view>.host{position:absolute;inset:0}
.meta{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 10px;padding:8px 12px 9px}
.meta b{flex:none;max-width:100%;font-size:13.5px;font-weight:600}
.meta span{flex:1 0 auto;max-width:100%;margin-left:auto;text-align:right;color:var(--ink-3);font-size:12px;white-space:nowrap}

/* 图标卡 */
.icard{cursor:default}
.icard img{position:absolute;left:10%;top:9%;width:80%;height:82%;object-fit:contain}
.icard .acts{position:absolute;right:8px;bottom:8px;display:flex;gap:6px;opacity:0;transform:translateY(4px);transition:opacity .15s,transform .2s}
.icard:hover .acts,.icard:focus-within .acts{opacity:1;transform:none}
.icard .acts .sbtn{background:var(--panel)}
.icard .acts .sbtn.pri{background:var(--ink)}
.style-box{display:flex;align-items:center;gap:12px;margin:0 0 12px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel)}
.style-box p{flex:1;margin:0;color:var(--ink-2);font-size:12.5px}
.sbtn{display:inline-flex;align-items:center;gap:5px;height:28px;padding:0 10px;border:1px solid var(--line);border-radius:7px;background:none;font-size:12px;font-weight:500;cursor:pointer;color:var(--ink-2)}
.sbtn:hover{border-color:var(--line-2);color:var(--ink)}
.sbtn.pri{background:var(--ink);border-color:var(--ink);color:var(--panel)}

/* 详情 */
.dlg{position:fixed;inset:0;z-index:50;display:none}
.dlg.open{display:block}
.dlg .mask{position:absolute;inset:0;background:rgba(8,12,18,.5);animation:fade .2s ease-out}
.dlg .box{position:absolute;inset:24px;max-width:1240px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr) 380px;border-radius:16px;background:var(--panel);box-shadow:0 30px 80px -20px rgba(0,0,0,.5);overflow:hidden;animation:rise .28s cubic-bezier(.2,.8,.2,1)}
@keyframes fade{from{opacity:0}}
@keyframes rise{from{opacity:0;transform:translateY(12px) scale(.985)}}
.stagecol{display:flex;flex-direction:column;min-width:0;background:var(--bg)}
.dview{position:relative;flex:1;min-height:0;display:grid;place-items:center;padding:20px}
.dview .frame{position:relative;width:100%;max-height:100%;aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:var(--surface);border:1px solid var(--line)}
.dview .host{position:absolute;inset:0}
.ctrl{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:12px 20px;border-top:1px solid var(--line);background:var(--panel)}
.ctrl .sp{flex:1}
.info{display:flex;flex-direction:column;min-height:0;border-left:1px solid var(--line)}
.info-h{display:flex;align-items:flex-start;gap:10px;padding:18px 20px 14px;border-bottom:1px solid var(--line)}
.info-h h3{margin:0;font-size:18px}
.info-h code{color:var(--ink-3)}
.x{margin-left:auto;flex:none;width:32px;height:32px;border:1px solid var(--line);border-radius:8px;background:none;cursor:pointer;display:grid;place-items:center}
.info-b{flex:1;overflow:auto;padding:16px 20px}
.info-b dl{margin:0;display:grid;grid-template-columns:52px 1fr;gap:8px 12px}
.info-b dt{color:var(--ink-3);font-size:12.5px;padding-top:1px}
.info-b dd{margin:0;color:var(--ink-2);font-size:13px}
.info-b dd b{color:var(--ink);font-weight:600}
.ptab{width:100%;border-collapse:collapse;font-size:12.5px;font-variant-numeric:tabular-nums}
.ptab td{padding:3px 0;vertical-align:top;border-bottom:1px dashed var(--line)}
.ptab td:first-child{white-space:nowrap;padding-right:10px;color:var(--ink)}
.tags{display:flex;flex-wrap:wrap;gap:5px}
.tags span{padding:0 7px;border-radius:5px;background:var(--surface-2);font-size:11.5px;color:var(--ink-2)}
details.code{margin-top:16px;border:1px solid var(--line);border-radius:10px}
details.code summary{padding:8px 12px;cursor:pointer;color:var(--ink-2);font-size:12.5px}
details.code pre{margin:0;padding:10px 12px;max-height:340px;overflow:auto;border-top:1px solid var(--line);background:var(--surface-2);white-space:pre-wrap;word-break:break-all}
.info-f{display:flex;gap:8px;padding:14px 20px;border-top:1px solid var(--line)}
.info-f .sbtn{flex:1;justify-content:center;height:36px;font-size:13px}

.toast{position:fixed;left:50%;bottom:28px;z-index:80;padding:8px 16px;border-radius:9px;background:var(--ink);color:var(--panel);font-size:13px;transform:translate(-50%,16px);opacity:0;pointer-events:none;transition:opacity .18s,transform .25s cubic-bezier(.2,.8,.2,1)}
.toast.on{opacity:1;transform:translate(-50%,0)}

@media (max-width:900px){
  .side{position:sticky;width:auto;bottom:auto;flex-direction:row;flex-wrap:wrap;align-items:center;gap:8px;padding:10px 16px;border-right:0;border-bottom:1px solid var(--line)}
  .brand small{display:none}
  .search{order:3;flex-basis:100%}
  .format-filter{order:4;flex-basis:100%}
  .navs{order:5;flex-basis:100%;flex-direction:row;overflow-x:auto;gap:12px;margin:0;padding:0 0 2px}
  .nav-summary{display:none}
  .nav-group,.nav-summary+.nav-group{padding:0 0 0 12px;border-top:0;border-left:1px solid var(--line);white-space:nowrap}
  .nav-summary+.nav-group{padding-left:0;border-left:0}
  .lbl{display:block;margin:0 8px 3px;font-size:10px}
  .nav{display:inline-flex;vertical-align:top;width:auto;min-height:30px;font-size:12px}
  .nav .dot{width:6px;height:6px}
  .nav em{font-size:10px;min-width:18px;padding:0 4px}
  .tools{margin-left:auto;padding:0;border:0;display:flex;flex:none;align-items:center;gap:6px}
  .tools .tbtn{width:32px;height:32px;padding:0}
  .tools .tbtn b{display:none}
  #main{margin-left:0;padding:14px 16px 60px}
  .sec-h p{display:none}
  .group-h{margin-bottom:18px}.group-h h2{font-size:20px}
  .catalog-group+.catalog-group{margin-top:32px;padding-top:20px}
  .grid{grid-template-columns:1fr}
  .icard .acts{opacity:1;transform:none}
  .dlg .box{inset:0;border-radius:0;grid-template-columns:1fr;grid-template-rows:auto 1fr;overflow:auto}
  .info{border-left:0;border-top:1px solid var(--line);min-height:auto}
  .dview{padding:12px}
}
@media (prefers-reduced-motion:reduce){.card,.card:hover{transform:none}.dlg .mask,.dlg .box{animation:none}}


/* 播放能力、源码入口与键盘访问 */
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.scrub{display:flex;flex:1;min-width:100px;max-width:240px;align-items:center}
.scrub input{width:100%;accent-color:var(--blue)}
a.sbtn{text-decoration:none}
.info-b dd{min-width:0;overflow-wrap:anywhere}.info-b a{color:var(--blue)}
.export-note{font-size:12px;color:var(--ink-2);padding:0 12px}
.info-f{flex-wrap:wrap}.info-f .sbtn{white-space:nowrap;font-size:12px;padding:0 8px}
.stagecol:fullscreen{background:var(--bg);width:100vw;height:100vh}.stagecol:fullscreen .frame{max-width:1400px}
@media(max-width:900px){.dview{flex:none;min-height:220px}.dview .frame{min-height:180px}.ctrl{padding:10px 12px}.ctrl .sp{display:none}.info-b{max-height:none}.dlg .box{display:block;overflow:auto}.stagecol:fullscreen{display:flex}.stagecol:fullscreen .dview{flex:1}}