.collapse-container{margin:1.5rem 0;border:1px solid rgba(0,0,0,.1);border-radius:8px;overflow:hidden;background:var(--bg);transition:all .3s ease}.collapse-container:hover{box-shadow:0 2px 8px rgba(0,0,0,.1)}[data-theme=dark] .collapse-container{border-color:rgba(255,255,255,.1)}[data-theme=dark] .collapse-container:hover{box-shadow:0 2px 8px rgba(0,0,0,.3)}.collapse-header{display:flex;align-items:center;gap:.75rem;padding:1rem 1.25rem;background:rgba(0,0,0,2%);cursor:pointer;user-select:none;transition:all .3s ease;position:relative}.collapse-header:hover{background:rgba(0,0,0,5%)}.collapse-header:active{transform:scale(.98)}.collapse-header.active{background:var(--accent);color:#fff}[data-theme=dark] .collapse-header{background:rgba(255,255,255,3%)}[data-theme=dark] .collapse-header:hover{background:rgba(255,255,255,5%)}[data-theme=dark] 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h4{font-size:1.2rem}.collapse-inner h5{font-size:1.1rem}.collapse-inner h6{font-size:1rem}.collapse-inner pre{margin:1rem 0;border-radius:6px;overflow-x:auto}.collapse-inner code{font-family:consolas,monaco,courier new,monospace;font-size:.9em}.collapse-inner pre code{display:block;padding:1rem;background:rgba(0,0,0,5%);border-radius:6px;overflow-x:auto}[data-theme=dark] .collapse-inner pre code{background:rgba(255,255,255,5%)}.collapse-inner blockquote{margin:1rem 0;padding:1rem;border-left:4px solid var(--accent);background:rgba(0,0,0,3%);border-radius:0 4px 4px 0}[data-theme=dark] .collapse-inner blockquote{background:rgba(255,255,255,3%)}.collapse-inner table{width:100%;margin:1rem 0;border-collapse:collapse;overflow-x:auto;display:block}.collapse-inner table th,.collapse-inner table td{padding:.75rem;border:1px solid rgba(0,0,0,.1);text-align:left}.collapse-inner table th{background:rgba(0,0,0,5%);font-weight:600}[data-theme=dark] .collapse-inner table th,[data-theme=dark] .collapse-inner table td{border-color:rgba(255,255,255,.1)}[data-theme=dark] .collapse-inner table th{background:rgba(255,255,255,5%)}.collapse-inner img{max-width:100%;height:auto;border-radius:6px;margin:1rem 0;display:block}.collapse-inner .video-container{margin:1rem 0}.collapse-inner .tabs-container{margin:1rem 0}.collapse-inner .collapse-container{margin:1rem 0;border-color:rgba(0,0,0,.15)}[data-theme=dark] .collapse-inner .collapse-container{border-color:rgba(255,255,255,.15)}.collapse-header:focus{outline:2px solid var(--accent);outline-offset:2px}.collapse-header:focus:not(:focus-visible){outline:none}@media(max-width:768px){.collapse-header{padding:.875rem 1rem}.collapse-inner{padding:1rem}.collapse-title{font-size:.95rem}.collapse-icon{width:18px;height:18px}}@media(max-width:480px){.collapse-header{padding:.75rem .875rem;gap:.5rem}.collapse-inner{padding:.875rem}.collapse-title{font-size:.9rem}.collapse-icon{width:16px;height:16px}.collapse-inner h1{font-size:1.5rem}.collapse-inner h2{font-size:1.3rem}.collapse-inner h3{font-size:1.2rem}.collapse-inner h4{font-size:1.1rem}}@media print{.collapse-content{max-height:none!important}.collapse-header{background:0 0;border-bottom:1px solid #000}.collapse-icon{display:none}}@media(prefers-reduced-motion:reduce){.collapse-container,.collapse-header,.collapse-content,.collapse-icon,.collapse-inner{transition:none;animation:none}}@media(prefers-contrast:high){.collapse-container{border:2px solid}.collapse-header{border-bottom:2px solid}}