/*
Theme Name: 牛斗牛 · 镜头学习室
Version: 2.0.0
*/
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.material-toolbar{display:flex;gap:12px;align-items:center;scroll-margin-top:112px}.material-toolbar input{flex:1}.material-toolbar select{background:#20332b;border:1px solid #49614f;color:var(--ink);padding:11px;font-size:13px}.material-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:19px;margin:20px 0}.asset-tile{border:1px solid var(--line);border-radius:12px;background:#1a2d24;overflow:hidden;min-width:0}.asset-tile:hover{border-color:#8b9c78}.asset-preview{aspect-ratio:16/10;background:#091710;position:relative;display:grid;place-items:center}.asset-preview img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}.asset-type{position:absolute;right:10px;bottom:10px;background:#142b20d9;color:#d3dfc9;font-size:10px;padding:3px 8px;border-radius:4px}.play-mark{position:relative;z-index:1;display:grid;place-items:center;width:48px;height:48px;border-radius:50%;border:1px solid #e2dfc67a;background:#122c1a99;color:#eee5c3;font-size:17px;padding-left:3px}.asset-caption{padding:15px 17px;display:flex;flex-direction:column;gap:7px}.asset-caption small{font-size:10px;color:#8ea98d}.asset-caption strong{font-weight:400;font-size:13px;overflow-wrap:anywhere;line-height:1.65}.asset-caption>span{font-size:11px;color:var(--gold);margin-top:5px}.material-pagination{display:flex;align-items:center;justify-content:center;gap:20px;margin:28px 0}.material-pagination>span{font-size:12px;color:var(--muted)}.asset-detail-heading{display:flex;justify-content:space-between;align-items:end;gap:25px;margin:10px 0 25px}.asset-detail-heading h1{font-size:30px;font-weight:500;line-height:1.5;overflow-wrap:anywhere;margin:12px 0 0}.asset-detail-heading .hero-actions{flex:none}.asset-viewer{background:#050c07;padding:16px;border:1px solid var(--line);border-radius:14px;min-height:180px;display:flex;justify-content:center}.asset-viewer video,.asset-viewer img{display:block;max-width:100%;max-height:75vh;min-height:120px;object-fit:contain}.asset-viewer video{width:100%}.project-body .material-counts{font-size:10px;color:#7c896f;min-height:0;margin:12px 0 0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:1150px){.material-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.site-header nav{gap:23px}}@media(max-width:850px){.material-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.asset-detail-heading{display:block}.asset-detail-heading .hero-actions{margin-top:18px}.site-header nav{gap:17px}}@media(max-width:620px){.site-header{padding-top:12px;gap:12px}.site-header nav{width:100%;justify-content:space-between;gap:10px}.site-header nav a{padding:0 0 13px}.site-header nav a[aria-current="page"]:after{bottom:5px}.site-header .brand small{display:inline;font-size:10px;margin-left:10px}.brand>span:last-child{display:flex;align-items:center;gap:0}.material-toolbar{flex-wrap:wrap;gap:9px}.material-toolbar input{flex-basis:100%}.material-toolbar select{flex:1;min-width:0}.material-grid{gap:11px}.asset-caption{padding:12px}.asset-caption strong{font-size:11px}.asset-caption small{font-size:9px}.asset-preview{aspect-ratio:4/3}.play-mark{width:37px;height:37px;font-size:13px}.asset-detail-heading h1{font-size:24px}.asset-viewer{padding:7px}.material-toolbar{scroll-margin-top:125px}.site-header nav a{font-size:12px}.library-sidebar{scroll-margin-top:120px}.reading-panel{scroll-margin-top:125px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}@media print{body{background:white;color:black}.site-header,.library-sidebar,.site-footer,.reading-actions,.reading-end,.back-link,#toast{display:none}.learning-layout,.reference-article{display:block;padding:0;margin:0;max-width:none}.reading-panel{box-shadow:none;border-radius:0;padding:0;background:white;color:black}.reading-body details{display:block}.reading-body table{display:table}.reading-body pre{white-space:pre-wrap}.reading-body a{color:black}.home-wrap{padding:0}.project-grid{display:block}.project-card{break-inside:avoid;margin:15px 0}.project-cover{height:130px}.hero-aside,.home-note{color:black;border:1px solid #ccc}}

.skill-demos{margin:0 0 38px}.demo-intro h2{font-size:23px;margin:5px 0}.demo-intro p{font-size:13px;color:#62736a}.demo-intro .eyebrow{color:#547664}.demo-item{border:1px solid #c6cfc3;border-radius:13px;padding:18px;margin:20px 0;background:#e9ede2}.demo-heading h3{font-size:18px;line-height:1.5;margin:9px 0 15px}.demo-kind{font-size:11px;border-radius:5px;padding:4px 8px;background:#d2e3d3;color:#265140}.demo-warning{background:#f0dcc4;color:#7a4420}.demo-item video{width:100%;max-height:460px;display:block;background:#07140e;aspect-ratio:16/9;border-radius:8px}.demo-controls{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin:13px 0}.demo-controls label{display:flex;align-items:center;gap:6px;font-size:12px}.demo-controls select{background:#fff;color:#294437;padding:6px;border:1px solid #afbfab}.demo-controls .button{background:#dce5d7;color:#294437;border:1px solid #adbfab}.demo-link{font-size:12px;color:#37644f;text-decoration:underline}.demo-beats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:9px}.demo-beats button{text-align:left;background:#f7f7ef;color:#263e31;padding:13px;border:1px solid #bfcdb9;display:flex;flex-direction:column;gap:5px}.demo-beats button:hover{background:#dce9d9;border-color:#618870}.demo-beats span{font-size:11px;color:#507958}.demo-beats strong{font-size:14px}.demo-beats small{font-size:12px;line-height:1.7;color:#53634f}.demo-note{font-size:12px;line-height:1.8;color:#594d36;background:#f0e8d4;border-radius:6px;padding:11px}.demo-status{font-size:12px;line-height:1.7;color:#56674e}@media(max-width:620px){.demo-item{padding:12px}.demo-beats{grid-template-columns:1fr}.demo-heading h3{font-size:17px}.demo-item video{max-height:300px}}

.asset-viewer audio{display:block;width:min(680px,90%);margin:64px auto}

/* Learning experience: keep controls within reach and bring the original video forward. */
.learning-layout{gap:24px;padding-top:22px;grid-template-columns:278px minmax(0,1fr)}
.library-sidebar{top:113px;max-height:calc(100vh - 133px);max-height:calc(100dvh - 133px);display:flex;flex-direction:column;overflow:hidden;padding-right:0}
.library-sidebar>*:not(.card-index){flex-shrink:0}
.library-heading{margin-bottom:13px}
.card-index{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;padding:0 6px 6px 0;scrollbar-width:thin;scrollbar-color:#4a6656 transparent;scroll-padding:8px}
.card-index a{padding:10px 12px}
.filter-summary{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:10px 0 7px;min-height:32px}
.filter-summary .result-count{margin:0;font-size:12px}
.filter-summary button{flex:none;background:transparent;color:#d9bd80;border:1px solid #4c6252;padding:4px 8px;font-size:12px;min-height:32px}
.filter-summary button:hover{background:#304b3e}
.reading-panel{padding:24px 30px 36px}
.reading-meta{font-size:12px;line-height:1.6}
.reading-title{font-size:clamp(24px,2.2vw,30px);line-height:1.4;margin:12px 0 10px}
.reading-summary{font-size:14px;line-height:1.7;margin-bottom:14px}
.reading-actions{padding-bottom:12px;margin-bottom:12px;gap:8px}
.card-jumps{display:flex;align-items:center;flex-wrap:wrap;gap:7px;margin:0 0 15px;padding-bottom:12px;border-bottom:1px solid #d4dacb}
.card-jumps button,.card-jumps a{display:inline-flex;align-items:center;justify-content:center;min-height:34px;padding:6px 10px;border:1px solid #b4c0a8;border-radius:7px;background:#e9ecdf;color:#34563f;font-size:12px;line-height:1.5}
.card-jumps button:hover,.card-jumps a:hover{background:#dbe5d2}
.card-section-select{display:flex;align-items:center;gap:8px;min-width:0;font-size:12px;color:#536a54}
.card-jumps .card-section-select{flex:1 1 190px}
.card-section-select select{min-width:0;width:100%;max-width:100%;min-height:34px;padding:6px 9px;border:1px solid #b4c0a8;background:#f8f8ef;color:#34563f;font-size:12px;text-overflow:ellipsis}
.reading-body{line-height:1.85}
.reading-body h2{margin-top:26px;scroll-margin-top:110px}
.reading-body pre{line-height:1.85}
.reading-empty{padding:45px 20px;min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:13px;text-align:center;color:#62736a}
.reading-empty h2,.reading-empty p{margin:0}
.reading-empty h2{font-size:23px;color:#34563f;font-weight:500}
.reading-empty .button{background:#31523d;border-color:#31523d;color:#fff}
.skill-demos{margin-bottom:28px;scroll-margin-top:110px}
.demo-intro .eyebrow{display:none}
.demo-intro h2{font-size:20px;line-height:1.5;margin:0 0 4px}
.demo-intro p{font-size:12px;line-height:1.65;margin:4px 0 10px}
.demo-item{padding:13px;margin:12px 0 18px}
.demo-heading h3{font-size:17px;line-height:1.5;margin:7px 0 10px}
.demo-controls{gap:8px;margin:10px 0}
.demo-beats button{padding:11px;transition:background .15s,border-color .15s}
.demo-beats button[aria-pressed="true"]{background:#d3e4d1;border:2px solid #426e5c;padding:10px;box-shadow:inset 3px 0 0 #426e5c}
.demo-beats button[aria-pressed="true"] span,.demo-beats button[aria-pressed="true"] strong{color:#244d36}
.demo-status{min-height:21px;line-height:1.75;margin:9px 0;color:#4e644c}
.demo-duration{font-size:12px;line-height:1.6;font-variant-numeric:tabular-nums;color:#62735c;white-space:nowrap}
.back-top{position:fixed;right:22px;bottom:22px;z-index:30;display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:42px;padding:9px 14px;border:1px solid #8ca181;border-radius:10px;background:#eef0e2;color:#2f523c;box-shadow:0 5px 20px #07150c38;font-size:12px}
.back-top:hover{background:#dbe6d2}
.back-top[hidden]{display:none}
#card-top,#card-original,.reading-body h3{scroll-margin-top:110px}
.filter-summary button[hidden]{display:none}
@media(min-width:851px) and (max-height:700px){
  .site-header{height:73px}
  .site-header nav a{padding-top:22px;padding-bottom:20px}
  .site-header nav a[aria-current="page"]:after{bottom:12px}
  .learning-layout{padding-top:18px}
  .library-sidebar{top:91px;max-height:calc(100vh - 107px);max-height:calc(100dvh - 107px)}
  .library-heading{margin-bottom:9px}
  .reading-panel{padding-top:20px}
  .reading-title{margin-top:9px;margin-bottom:8px}
  .reading-summary{margin-bottom:11px}
}
@media(max-width:1150px) and (min-width:851px){
  .learning-layout{grid-template-columns:245px minmax(0,1fr);gap:20px}
  .reading-panel{padding:23px 25px 34px}
}
@media(max-width:850px){
  .learning-layout{display:block;padding:20px 20px 55px}
  .library-sidebar{position:static;max-height:none;overflow:visible;display:block;margin-bottom:16px}
  .library-heading{margin-bottom:9px}
  .library-heading h1{font-size:22px}
  .card-index{flex-direction:row;overflow-x:auto;overflow-y:hidden;gap:8px;padding:0 0 8px;scroll-snap-type:x proximity;scroll-padding:0;overscroll-behavior-x:contain;overscroll-behavior-y:auto}
  .card-index li{flex:0 0 220px;scroll-snap-align:start}
  .card-index a{height:100%;padding:10px 12px;background:#1b3025;border-color:#3b5340}
  .card-index strong{font-size:13px}
  .reading-panel{padding:22px 25px 32px}
  .reading-title{font-size:27px}
  .reading-body{font-size:15px}
  .reading-body h2{font-size:21px}
  .reading-actions .button{font-size:12px;padding:7px 11px}
  .demo-item video{max-height:430px}
  .card-section-select select{min-height:36px}
}
@media(max-width:620px){
  .learning-layout{padding:17px 14px 45px}
  .card-index li{flex-basis:190px}
  .reading-panel{padding:20px 17px 28px}
  .reading-title{font-size:25px}
  .reading-summary{font-size:13px;line-height:1.75}
  .reading-body{font-size:14px}
  .card-jumps{gap:6px;margin-bottom:12px}
  .card-jumps button,.card-jumps a{min-height:37px;padding:7px 9px}
  .card-jumps .card-section-select{flex-basis:100%}
  .card-section-select select{min-height:38px}
  .demo-item{padding:10px}
  .demo-heading h3{font-size:16px}
  .demo-item video{max-height:300px}
  .demo-controls .button{min-height:38px}
  .demo-controls select{min-height:36px}
  .back-top{right:14px;bottom:14px;min-height:40px;padding:8px 11px}
}
@media print{
  .card-jumps,.back-top,.demo-controls,.demo-beats,.demo-status{display:none!important}
  .learning-layout{display:block;padding:0}
  .library-sidebar{display:none}
  .reading-panel{padding:0}
  .demo-item{break-inside:avoid}
}