:root{--stf-bg: #0f0f0f;--stf-surface: #212121;--stf-surface-hover: #3d3d3d;--stf-brand: #ff0000;--stf-text: #f1f1f1;--stf-text-muted: #aaaaaa;--stf-border: #3f3f3f}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{background:var(--stf-bg);color:var(--stf-text);font-family:Roboto,Arial,sans-serif;line-height:1.4;overflow-x:hidden}a{text-decoration:none;color:inherit}img{max-width:100%;height:auto;display:block;border-radius:12px}ul,ol{list-style:none}.stf-app{display:flex;flex-direction:column;min-height:100vh}.stf-header{position:sticky;top:0;z-index:100;background:#0f0f0ff2;padding:.75rem 1.5rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--stf-border)}.stf-logo{font-size:1.4rem;font-weight:800;color:var(--stf-text);letter-spacing:-.05em;display:flex;align-items:center;gap:.25rem}.stf-logo span{background:var(--stf-brand);color:#fff;padding:.1rem .3rem;border-radius:4px;font-size:1.1rem}.stf-search{display:none;flex:1;max-width:500px;background:#121212;border:1px solid var(--stf-border);border-radius:40px;padding:.5rem 1.5rem;margin:0 2rem}@media(min-width:768px){.stf-search{display:block}}.stf-search input{width:100%;background:none;border:none;color:#fff;font-size:1rem;outline:none}.stf-nav{display:flex;gap:1.5rem;align-items:center}.stf-nav a{font-weight:600;font-size:.9rem;color:var(--stf-text-muted)}.stf-nav a:hover{color:var(--stf-text)}.stf-nav-btn{background:var(--stf-surface);color:var(--stf-text);padding:.5rem 1.25rem;border-radius:20px;font-weight:700;border:1px solid var(--stf-border)}.stf-nav-btn:hover{background:var(--stf-surface-hover)}.stf-body{display:flex;flex:1}.stf-sidebar{display:none;width:240px;background:var(--stf-bg);padding:1.5rem 1rem;position:sticky;top:60px;height:calc(100vh - 60px);overflow-y:auto;border-right:1px solid var(--stf-border)}@media(min-width:1024px){.stf-sidebar{display:flex;flex-direction:column;gap:1rem}}.stf-sidebar h3{font-size:1rem;font-weight:700;padding:.5rem 1rem;margin-bottom:.5rem;color:var(--stf-text)}.stf-sidebar a{display:flex;align-items:center;padding:.75rem 1rem;border-radius:10px;font-size:.95rem;color:var(--stf-text-muted);font-weight:500}.stf-sidebar a:hover{background:var(--stf-surface);color:var(--stf-text)}.stf-sidebar a.active{background:var(--stf-surface);color:var(--stf-text);font-weight:700}.stf-feed{flex:1;padding:2rem 1.5rem;max-width:1600px}.stf-feed-title{font-size:1.5rem;font-weight:800;margin-bottom:1.5rem;color:var(--stf-text)}.stf-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2rem 1.5rem}.stf-card{display:flex;flex-direction:column;gap:.75rem}.stf-card-img-wrap{width:100%;aspect-ratio:16/9;background:var(--stf-surface);border-radius:12px;overflow:hidden;position:relative}.stf-card-img{width:100%;height:100%;object-fit:cover;transition:transform .2s}.stf-card:hover .stf-card-img{transform:scale(1.05)}.stf-badge{position:absolute;bottom:.5rem;right:.5rem;background:#000c;color:#fff;padding:.2rem .4rem;border-radius:4px;font-size:.75rem;font-weight:700}.stf-card-info{display:flex;gap:.75rem}.stf-avatar{width:36px;height:36px;border-radius:50%;background:var(--stf-surface-hover);flex-shrink:0}.stf-card-text{display:flex;flex-direction:column}.stf-card-title{font-size:1.05rem;font-weight:600;color:var(--stf-text);line-height:1.3;margin-bottom:.25rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.stf-card-meta{font-size:.85rem;color:var(--stf-text-muted)}.stf-card-meta a:hover{color:var(--stf-text)}.stf-watch{display:flex;flex-direction:column;gap:2rem;max-width:1600px;margin:0 auto;padding:1.5rem}@media(min-width:1024px){.stf-watch{flex-direction:row}}.stf-player-side{flex:1;min-width:0}.stf-player{width:100%;aspect-ratio:16/9;background:#000;border-radius:12px;overflow:hidden;margin-bottom:1rem}.stf-player img{width:100%;height:100%;object-fit:cover}.stf-watch-title{font-size:1.4rem;font-weight:700;margin-bottom:.5rem}.stf-watch-meta{display:flex;align-items:center;justify-content:space-between;padding-bottom:1rem;border-bottom:1px solid var(--stf-border);margin-bottom:1.5rem}.stf-channel{display:flex;align-items:center;gap:.75rem;font-weight:600}.stf-actions button{background:var(--stf-surface);color:var(--stf-text);border:none;padding:.5rem 1rem;border-radius:20px;font-weight:600;cursor:pointer}.stf-actions button:hover{background:var(--stf-surface-hover)}.stf-desc-box{background:var(--stf-surface);border-radius:12px;padding:1rem;font-size:.95rem}.stf-prose p{margin-bottom:1rem}.stf-prose h2{font-size:1.25rem;font-weight:700;margin:2rem 0 1rem}.stf-prose ul{padding-left:1.5rem;margin-bottom:1rem;list-style:disc}.stf-upnext-side{width:100%}@media(min-width:1024px){.stf-upnext-side{width:400px;flex-shrink:0}}.stf-upnext-title{font-size:1.1rem;font-weight:700;margin-bottom:1rem}.stf-upnext-list{display:flex;flex-direction:column;gap:1rem}.stf-upcard{display:flex;gap:.75rem}.stf-upcard-img{width:168px;aspect-ratio:16/9;border-radius:8px;object-fit:cover;flex-shrink:0}.stf-upcard-text{display:flex;flex-direction:column}.stf-upcard-title{font-size:.9rem;font-weight:600;margin-bottom:.25rem;line-height:1.2;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.stf-upcard-meta{font-size:.75rem;color:var(--stf-text-muted)}.stf-footer{text-align:center;padding:2rem 1.5rem;color:var(--stf-text-muted);font-size:.85rem;border-top:1px solid var(--stf-border)}