:root{--yt-bg:#fff;--yt-border:#e5e7eb;--yt-text:#0f172a;--yt-muted:#6b7280;--yt-hover:#f1f5f9;--yt-primary:#2563eb}.kms-public,.kms-watch{background:var(--yt-bg);min-height:100vh;color:var(--yt-text);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,sans-serif}.kms-header{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;padding:12px 24px;border-bottom:1px solid var(--yt-border);position:sticky;top:0;background:#fff;z-index:10}.kms-header h5{margin:0;font-weight:600}.kms-header-center{display:flex;justify-content:center}.kms-search{width:100%;max-width:520px;padding:10px 14px;border-radius:999px;border:1px solid var(--yt-border);font-size:14px;outline:none}.kms-search:focus{border-color:var(--yt-primary)}.kms-login-btn{padding:8px 14px;border-radius:999px;border:1px solid var(--yt-primary);color:var(--yt-primary);font-size:14px;font-weight:500;text-decoration:none}.kms-login-btn:hover{background:rgba(37,99,235,.08)}.kms-content{padding:24px}.kms-video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}.kms-video-card{cursor:pointer}.kms-thumbnail{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:14px;background:#000}.kms-thumbnail img{width:100%;height:100%;-o-object-fit:cover;object-fit:cover}.kms-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;font-size:12px;padding:2px 6px;border-radius:4px}.kms-video-info{margin-top:10px}.kms-video-title{font-size:15px;font-weight:600;line-height:1.35;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.kms-video-meta{margin-top:4px;font-size:13px;color:var(--yt-muted)}.kms-video-card:hover .kms-thumbnail{border-radius:10px}.kms-watch-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:24px;padding:24px}.kms-watch-main{max-width:100%}.kms-player{position:relative;width:100%;aspect-ratio:16/9;background:#000;border-radius:14px;overflow:hidden}.kms-player iframe{position:absolute;inset:0;width:100%;height:100%;border:none}.kms-player video{width:100%;height:100%;-o-object-fit:contain;object-fit:contain}.kms-watch-title{margin-top:16px;font-size:18px;font-weight:600}.kms-watch-meta{margin-top:6px;font-size:14px;color:var(--yt-muted)}.kms-description{margin-top:16px;background:var(--yt-hover);padding:14px;border-radius:12px;font-size:14px}.kms-description p{margin:0}.kms-description p.collapsed{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.kms-show-more{margin-top:6px;background:none;border:none;color:var(--yt-primary);font-weight:500;cursor:pointer}.kms-watch-sidebar{display:flex;flex-direction:column;gap:14px}.kms-recommend-card{display:flex;gap:10px;cursor:pointer}.kms-recommend-thumb{width:168px;aspect-ratio:16/9;border-radius:10px;-o-object-fit:cover;object-fit:cover}.kms-recommend-info{display:flex;flex-direction:column}.kms-recommend-title{font-size:14px;font-weight:600;line-height:1.35;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.kms-recommend-meta{font-size:12px;color:var(--yt-muted);margin-top:4px}.kms-loading{text-align:center;padding:80px 0;font-size:14px;color:var(--yt-muted)}@media(max-width:1024px){.kms-watch-layout{grid-template-columns:1fr}.kms-watch-sidebar{order:2}}@media(max-width:640px){.kms-header{grid-template-columns:1fr;gap:10px}.kms-header-center{order:3}.kms-content,.kms-watch-layout{padding:16px}.kms-recommend-thumb{width:140px}}