.video-course{width:min(1380px,calc(100% - 30px));margin:24px auto}.vc-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:22px}.vc-heading h1{font-size:1.5rem;margin:0}.vc-heading>a{color:#167ba8}.vc-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:24px;direction:ltr}.vc-main,.vc-side{direction:rtl;min-width:0}.vc-main{background:#fff;border:1px solid #dae5ee;border-radius:16px;overflow:hidden}.vc-player{background:#142331;aspect-ratio:16/9}.vc-player video{width:100%;height:100%;display:block}.vc-tools{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:14px 20px;border-bottom:1px solid #e1e8ef;font-size:.9rem}.vc-tools label{display:flex;align-items:center;gap:8px;margin:0}.vc-tools select{width:auto;padding:5px;margin:0}.vc-tools [data-video-status]{color:#405a70}.vc-tabs{display:flex;justify-content:center;gap:8px;padding:20px 12px 0;flex-wrap:wrap}.vc-tabs button{border:0;padding:10px 18px;background:#f5f7fa;color:#53637a;border-radius:8px;cursor:pointer;font-weight:bold}.vc-tabs button[aria-selected=true]{background:#e7eefc;color:#315acb}.vc-panel{padding:20px}.vc-panel[hidden]{display:none}.vc-vocab{display:grid;grid-template-columns:repeat(auto-fit,minmax(145px,1fr));gap:12px}.vc-word{border:1px solid #dce5ed;border-radius:12px;background:white;cursor:pointer;display:flex;flex-direction:column;align-items:center;padding:12px;gap:5px;color:#253c52;min-width:0}.vc-word:hover,.vc-word.active{border-color:#4567db;background:#f4f7ff}.vc-word img{width:120px;max-width:100%;height:120px;object-fit:cover;border-radius:8px}.vc-word b{font-size:1.1rem;overflow-wrap:anywhere}.vc-word small{color:#315acb;font-size:.88rem}.vc-tip{padding:16px 20px;background:#eef5fc;margin:0 20px 20px;border-radius:9px;color:#425e7b}.vc-main .complete{padding:0 20px 24px}.vc-side section{border:1px solid #dce5ed;background:#fff;border-radius:12px;padding:20px;margin-bottom:20px}.vc-side h2{font-size:1.06rem;margin:0 0 18px}.vc-side a,.vc-side button:not(.btn){display:block;padding:12px;background:#f5f7ff;color:#3956a8;border-radius:8px;margin:8px 0;text-align:right;border:0;width:100%;cursor:pointer}.vc-side a span{float:left;direction:ltr}.vc-side p{font-size:.9rem;color:#4d677d}.vc-quiz-image{border-radius:12px;object-fit:cover}.vc-panel form{max-width:500px}.vc-panel form .btn{margin-top:12px}.vc-copy-url{font-size:.8rem;direction:ltr}.vc-panel [data-quiz-feedback]{padding:12px;border-radius:9px;background:#edf5fd}.vc-word:focus-visible,.vc-tabs button:focus-visible{outline:3px solid #175fc5;outline-offset:2px}@media(max-width:900px){.vc-layout{grid-template-columns:1fr}.vc-side{display:grid;grid-template-columns:1fr 1fr;gap:12px}.vc-side section{margin:0}.vc-heading{flex-wrap:wrap}.vc-heading h1{order:3;flex-basis:100%;font-size:1.3rem}.vc-side section:last-child{grid-column:1/-1}}@media(max-width:540px){.vc-side{grid-template-columns:1fr}.vc-tools{gap:10px;padding:12px}.vc-vocab{grid-template-columns:repeat(2,minmax(0,1fr))}.vc-panel{padding:14px}.vc-tabs button{padding:10px;font-size:.9rem}.vc-tip{margin:0 12px 16px}.video-course{width:calc(100% - 20px)}}