*{box-sizing:border-box}body{margin:0;background:#0c112c;color:#f0f3ff;font-family:system-ui,Arial,sans-serif}
header{display:flex;align-items:center;gap:16px;padding:18px 24px;background:#181f4a}header img{width:64px;height:64px}header h1{margin:0;color:#ffb703}header p{margin:2px 0 0;color:#96a0c8;font-size:14px}header .btn{margin-left:auto}
main{max-width:1000px;margin:auto;padding:20px}.bar{margin-bottom:14px}select{background:#181f4a;color:#fff;border:1px solid #ffb703;border-radius:8px;padding:6px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}.card{background:#181f4a;border-radius:16px;padding:12px}.card video{width:100%;aspect-ratio:9/16;background:#000;border-radius:10px}.card h3{margin:10px 0 2px}.card p{margin:0 0 10px;color:#96a0c8;font-size:13px}
.btn{display:inline-block;background:#ffb703;color:#0c112c;font-weight:700;padding:9px 16px;border-radius:10px;text-decoration:none;border:0;cursor:pointer;font-size:15px}
.note{color:#96a0c8;font-size:13px;margin-top:24px}.q{background:#181f4a;border-radius:16px;padding:18px;margin-bottom:20px}.q h2{margin-top:0}.opts label{display:block;background:#0c112c;border-radius:10px;padding:10px 12px;margin:8px 0;cursor:pointer}.ans{display:none;margin-top:14px;background:#0c112c;border-radius:12px;padding:12px}.ok{color:#2ec4b6;font-weight:700}.bad{color:#ff6b81;font-weight:700}