.sxvl{max-width:1328px;margin:0 auto!important;padding:42px 24px 64px!important;color:#24272a}.sxvl *{box-sizing:border-box}.sxvl [hidden]{display:none!important}.sxvl .sx-course-nav{margin:0 0 30px;gap:8px}.sxvl .sx-course-nav a[aria-current]{background:#e6f5ed;color:#087947;text-decoration:none}.sxvl-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin:0 0 32px}.sxvl .sxvl-eyebrow{font-size:13px;color:#737a7d;margin:0 0 12px}.sxvl h1{font-size:clamp(29px,3vw,42px)!important;line-height:1.24!important;letter-spacing:-.03em;margin:0 0 14px!important;text-align:left!important}.sxvl .sxvl-intro{font-size:15px;line-height:1.8;color:#626a6d;margin:0;max-width:650px}.sxvl-stats{display:flex;flex-shrink:0;gap:22px;padding-bottom:4px}.sxvl-stats>span{font-size:12px;color:#737a7d;white-space:nowrap}.sxvl-stats strong{display:block;font-size:27px;line-height:1.5;font-weight:600;color:#24272a}.sxvl-browser{border-bottom:1px solid #e4e7e5;margin:0 0 26px;padding:0 0 15px}.sxvl-filter-top{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}.sxvl-groups{display:flex;flex-wrap:wrap;gap:6px}.sxvl-groups button{border:1px solid transparent;border-radius:25px;background:transparent;padding:10px 13px;color:#626a6d;cursor:pointer;font:inherit;font-size:14px;line-height:1.5;white-space:nowrap}.sxvl-groups button span{margin-left:7px;font-size:12px;opacity:.7}.sxvl-groups button[aria-pressed=true]{background:#ebf5ef;color:#087947;border-color:#d5eadf;font-weight:600}.sxvl-groups button:hover{background:#f0f2f0}.sxvl-controls{display:flex;gap:10px}.sxvl-search{position:relative;display:block;width:228px}.sxvl-search svg{position:absolute;left:13px;top:13px;width:19px;height:19px;color:#7b8380;pointer-events:none}.sxvl input[type=search],.sxvl select{font:inherit;font-size:14px;color:#39423e;background:#fff;border:1px solid #dfe4e0;border-radius:8px;height:44px;box-shadow:none;margin:0;min-width:0}.sxvl input[type=search]{width:100%;padding:10px 12px 10px 39px}.sxvl-language select{width:139px;padding:9px 28px 9px 12px}.sxvl-result-row{display:flex;justify-content:space-between;align-items:center;min-height:27px;margin-top:12px;gap:12px}.sxvl-result-row p{font-size:13px;color:#77807b;margin:0}.sxvl-reset{border:0;background:none;color:#087947;font:inherit;font-size:13px;padding:0;cursor:pointer}.sxvl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.sxvl-card{border:1px solid #e0e4e1;border-radius:12px;overflow:hidden;background:#fff;display:flex;flex-direction:column;min-width:0;transition:box-shadow .18s,border-color .18s}.sxvl-card:hover{box-shadow:0 6px 22px #1b382510;border-color:#c8d7ce}.sxvl-cover{border:0;border-bottom:1px solid #e8ebe9;background:#202724;padding:0;cursor:pointer;width:100%;aspect-ratio:16/9;position:relative;display:block;overflow:hidden}.sxvl-cover img{display:block;width:100%;height:100%;object-fit:cover}.sxvl-cover:after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 60%,#0004)}.sxvl-play{position:absolute;z-index:1;left:50%;top:50%;transform:translate(-50%,-50%);width:46px;height:46px;border-radius:50%;background:#fffffff2;box-shadow:0 2px 15px #0002;display:grid;place-items:center;color:#147648}.sxvl-play svg{width:28px;height:28px}.sxvl-cover:hover .sxvl-play{background:#0fb771;color:#fff}.sxvl-duration{position:absolute;bottom:12px;right:12px;z-index:1;border-radius:5px;padding:4px 7px;background:#142019d9;color:#fff;font-size:12px;line-height:1.3}.sxvl-card-body{padding:20px;display:flex;flex:1;flex-direction:column;gap:0}.sxvl-tags{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:11px}.sxvl-tags span{background:#f1f3f1;color:#717975;border-radius:4px;padding:4px 7px;font-size:11px;line-height:1.2}.sxvl-tags .sxvl-zh{background:#edf7f0;color:#087947}.sxvl .sxvl-card-title{font-size:19px!important;line-height:1.45!important;margin:0 0 9px!important;min-height:55px;letter-spacing:-.02em}.sxvl-card-title button{font:inherit;font-weight:600;text-align:left;border:0;background:none;padding:0;cursor:pointer;color:inherit;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.sxvl-card-title button:hover{color:#08824d}.sxvl .sxvl-description{font-size:13px;line-height:1.7;color:#77807a;margin:0 0 15px;min-height:44px}.sxvl .sxvl-author{font-size:12px;line-height:1.7;margin:auto 0 16px;color:#4e5751}.sxvl-author span{display:block;font-size:11px;color:#8b928e}.sxvl-card-actions{display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid #eef0ee;padding-top:16px}.sxvl-card-actions .btn{min-height:38px;padding:9px 15px;font-size:13px;line-height:20px;gap:7px;white-space:nowrap}.sxvl-card-actions .btn svg{width:17px;height:17px}.sxvl-card-actions>a{font-size:12px;color:#69716c;text-decoration:none;white-space:nowrap}.sxvl-card-actions>a:hover{text-decoration:underline;color:#087947}.sxvl-external{margin-top:48px}.sxvl-section-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:20px}.sxvl .sxvl-section-heading h2{font-size:23px!important;line-height:1.4;margin:0 0 7px!important}.sxvl-section-heading p{font-size:13px;color:#78817b;margin:0}.sxvl-section-heading>span{color:#7f8982;font-size:12px;white-space:nowrap}.sxvl-external-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.sxvl-external-card{display:flex;align-items:flex-start;gap:16px;border:1px solid #e1e6e2;border-radius:10px;background:#fff;padding:22px;min-width:0}.sxvl-external-icon{flex-shrink:0;border-radius:9px;width:44px;height:44px;display:grid;place-items:center;background:#eff4f0;color:#248151}.sxvl-external-icon svg{width:24px;height:24px}.sxvl .sxvl-topic{color:#718078;font-size:11px;margin:0 0 7px}.sxvl .sxvl-external-card h3{font-size:16px!important;line-height:1.5;margin:0 0 8px!important}.sxvl .sxvl-external-author{font-size:12px;color:#88918a;margin:0 0 14px}.sxvl-external-actions{display:flex;gap:18px;flex-wrap:wrap}.sxvl-external-actions button{border:0;background:none;padding:0;color:#087947;cursor:pointer;font:inherit;font-size:13px}.sxvl-external-actions a{font-size:12px;color:#7b847d;text-decoration:none}.sxvl-empty{text-align:center;padding:70px 20px;border:1px dashed #dfe5e0;border-radius:12px;background:white}.sxvl .sxvl-empty h2{font-size:23px!important;margin:0 0 10px!important}.sxvl-empty p{font-size:14px;color:#78817b}.sxvl-note{margin-top:32px;border-top:1px solid #e1e5e2;padding-top:22px;display:flex;gap:32px;align-items:flex-start}.sxvl-note p{font-size:12px;line-height:1.9;color:#858d87;margin:0;max-width:820px}.sxvl-note>a{font-size:12px;color:#087947;flex-shrink:0;line-height:1.9;text-decoration:none}.sxvl-player{display:none;width:min(1120px,calc(100vw - 40px));max-width:none;max-height:calc(100dvh - 40px);padding:0;border:0;border-radius:14px;background:#fff;color:#252b27;overflow:auto;box-shadow:0 20px 80px #0004;margin:auto}.sxvl-player[open]{display:block}.sxvl-player::backdrop{background:#102218bb;backdrop-filter:blur(3px)}.sxvl-player-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;padding:24px 28px 20px}.sxvl-player-head p{margin:0 0 5px;font-size:12px;color:#77817a}.sxvl .sxvl-player-head h2{font-size:22px!important;line-height:1.4!important;margin:0!important;max-width:870px}.sxvl-close{border:0;background:#f2f4f2;color:#4b554e;border-radius:50%;width:36px;height:36px;flex-shrink:0;cursor:pointer;font-size:25px;line-height:1;display:grid;place-items:center}.sxvl-player-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:24px;padding:0 28px 26px}.sxvl-screen{width:100%;aspect-ratio:16/9;position:relative;border-radius:7px;overflow:hidden;background:#111a15}.sxvl-screen video,.sxvl-screen iframe{display:block;width:100%;height:100%;border:0;object-fit:contain;position:absolute;inset:0}.sxvl .sxvl-player-status{font-size:12px;line-height:1.6;margin:10px 0;color:#737e76;min-height:19px}.sxvl-playback{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.sxvl-playback label{font-size:12px;color:#69756c;display:flex;align-items:center;gap:8px}.sxvl-playback select{height:34px;padding:3px 22px 3px 10px;font-size:12px}.sxvl-playback a{font-size:12px;color:#087947}.sxvl .sxvl-player-meta{font-size:12px;line-height:1.8;color:#778078;margin:0 0 20px;white-space:pre-line}.sxvl-player-info h3{font-size:14px!important;margin:0 0 12px!important;line-height:1.5!important}.sxvl-chapters{display:grid;gap:5px;max-height:240px;overflow:auto;padding-right:3px}.sxvl-chapters button{font:inherit;font-size:12px;line-height:1.5;display:flex;gap:10px;align-items:center;width:100%;text-align:left;cursor:pointer;border:0;border-radius:6px;padding:9px 10px;background:#f4f6f4;color:#57665b}.sxvl-chapters button:hover,.sxvl-chapters button[aria-current=true]{color:#087947;background:#e8f5ed}.sxvl-chapters time{font-size:11px;font-variant-numeric:tabular-nums;color:#87958b;min-width:33px}.sxvl-player-links{display:flex;flex-direction:column;align-items:flex-start;gap:10px;margin-top:20px}.sxvl-player-links a{font-size:12px;color:#087947;text-decoration:none}.sxvl .sxvl-player-note{font-size:11px;line-height:1.8;color:#89918c;margin:16px 0 0}.sxvl-sr{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.sxvl :is(button,a,input,select):focus-visible{outline:2px solid #087947;outline-offset:4px}.sxvl button{touch-action:manipulation}.sxvl-player iframe:focus-visible{outline-offset:-2px}
@media(max-width:1150px){.sxvl-heading{align-items:flex-start}.sxvl-stats{gap:16px}.sxvl-filter-top{align-items:stretch}.sxvl-controls{margin-left:auto}.sxvl-player-layout{grid-template-columns:minmax(0,1fr) 230px;gap:20px}.sxvl-card-actions .btn{padding:8px 11px}.sxvl-card-body{padding:17px}}
@media(max-width:950px){.sxvl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.sxvl-heading{display:block}.sxvl-stats{margin-top:20px;gap:30px}.sxvl-stats>span{display:flex;align-items:baseline;gap:7px}.sxvl-stats strong{font-size:22px}.sxvl-filter-top{display:block}.sxvl-controls{margin-top:16px}.sxvl-search{width:100%;flex:1}.sxvl-note{display:block}.sxvl-note>a{display:inline-block;margin-top:12px}.sxvl-player-layout{grid-template-columns:1fr}.sxvl-chapters{grid-template-columns:repeat(2,minmax(0,1fr));max-height:180px}.sxvl-player-meta{margin-bottom:12px!important}.sxvl-player-info{border-top:1px solid #edf0ed;padding-top:16px}.sxvl-player-links{flex-direction:row;flex-wrap:wrap;gap:16px}}
@media(max-width:600px){.sxvl{padding:26px 18px 42px!important}.sxvl .sx-course-nav{margin-bottom:25px;gap:7px}.sxvl-heading{margin-bottom:24px}.sxvl h1{font-size:29px!important;max-width:340px}.sxvl .sxvl-intro{font-size:13px;line-height:1.8}.sxvl .sxvl-eyebrow{font-size:11px;margin-bottom:9px}.sxvl-stats{gap:19px;justify-content:flex-start;flex-wrap:wrap;margin-top:18px}.sxvl-stats>span{font-size:10px;gap:5px}.sxvl-stats strong{font-size:21px}.sxvl-groups{gap:5px}.sxvl-groups button{font-size:12px;padding:8px 10px}.sxvl-groups button span{font-size:10px;margin-left:5px}.sxvl-groups button:first-child{padding-left:9px}.sxvl-controls{gap:8px;margin-top:12px}.sxvl-language select{width:122px;font-size:12px}.sxvl input[type=search]{font-size:12px;padding-left:35px}.sxvl-search svg{left:10px}.sxvl-result-row p{font-size:11px}.sxvl-reset{font-size:11px}.sxvl-grid{grid-template-columns:1fr;gap:20px}.sxvl-card-body{padding:19px}.sxvl .sxvl-card-title{font-size:18px!important;min-height:0}.sxvl .sxvl-description{min-height:0;margin-bottom:14px}.sxvl .sxvl-author{margin-bottom:14px}.sxvl-card-actions .btn{padding:9px 16px}.sxvl-external{margin-top:34px}.sxvl-external-grid{grid-template-columns:1fr;gap:12px}.sxvl-section-heading{display:block;margin-bottom:16px}.sxvl .sxvl-section-heading h2{font-size:20px!important}.sxvl-section-heading>span{display:none}.sxvl-external-card{padding:18px;gap:12px}.sxvl-external-icon{width:35px;height:35px;border-radius:7px}.sxvl .sxvl-external-card h3{font-size:15px!important}.sxvl-player{width:calc(100vw - 20px);max-height:calc(100dvh - 20px);border-radius:10px}.sxvl-player-head{padding:17px 16px 16px;gap:12px}.sxvl .sxvl-player-head h2{font-size:18px!important}.sxvl-close{width:32px;height:32px}.sxvl-player-layout{padding:0 16px 20px;gap:16px}.sxvl-chapters{grid-template-columns:1fr;max-height:160px}.sxvl-playback{gap:8px}.sxvl-playback a{font-size:11px}.sxvl-player-head p{font-size:11px}}
@media(prefers-reduced-motion:reduce){.sxvl *{scroll-behavior:auto!important;transition:none!important}}