body{margin:0}.header{justify-content:space-between;align-items:center;display:flex}.header-left{flex:1;align-items:center;gap:24px;min-width:0;display:flex}.header-title{color:#fff;white-space:nowrap;font-size:18px;font-weight:600}.subnav{padding:0 12px}.header-user{color:#ffffffd9}.content{box-sizing:border-box;width:100%;max-width:1100px;margin:0 auto;padding:24px}.split-cols{align-items:flex-start;gap:16px;display:flex}@media (width<=768px){.header{padding:0 12px}.header-left{gap:12px}.header-title{font-size:16px}.header-user{display:none}.content{padding:12px}.split-cols{flex-direction:column}}.login-wrap{background:#f5f5f5;justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{width:360px}.embed-wrap{background:#fff;min-height:100vh}.embed-bar{justify-content:flex-end;align-items:center;gap:8px;padding:8px 24px;display:flex}.embed-user{color:#0000008c;font-size:13px}.embed-content{box-sizing:border-box;width:100%;max-width:900px;margin:0 auto;padding:8px 24px 32px}.login-wrap--embedded{background:#fff;align-items:flex-start;min-height:auto;padding:40px 16px}.lesson-body img{max-width:100%}.lesson-body>:first-child{margin-top:0}.rte-content{background:#fff;border:1px solid #d9d9d9;border-radius:6px}.rte-content .ProseMirror{outline:none;min-height:260px;padding:8px 12px}.rte-content .ProseMirror>:first-child{margin-top:0}