.pkcourse-shell{width:100%;max-width:100%;min-width:0;background:#f5f7f8;border:1px solid #c8dad7;border-radius:12px;overflow:hidden}.pkcourse-toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:12px;padding:12px;background:#153f3c;color:white;font:600 15px/1.4 system-ui}.pkcourse-toolbar a{color:white;text-decoration:underline}.pkcourse-toolbar>span:first-child{margin-right:auto}.pkcourse-toolbar button{font:inherit;min-height:44px;padding:8px 16px;border:1px solid #98b8b2;border-radius:8px;background:#effcf8;color:#153f3c;cursor:pointer}.pkcourse-shell iframe{display:block;width:100%;height:var(--pkcourse-height,900px);min-height:360px;border:0}.pkcourse-shell:fullscreen{width:100vw!important;height:100dvh!important;max-width:none!important;border:0;border-radius:0;display:flex;flex-direction:column}.pkcourse-shell:fullscreen iframe{flex:1;min-height:0;height:0}.pkcourse-message:empty{display:none}@media(max-width:600px){.pkcourse-toolbar>span:first-child{flex-basis:100%}}