.canvas-help-video-overlay[hidden]{display:none!important}
.canvas-help-video-overlay{position:fixed;inset:0;z-index:2400;display:flex;align-items:center;justify-content:center;padding:14px;box-sizing:border-box;background:rgba(5,8,17,.82);backdrop-filter:blur(5px)}
.canvas-help-video-dialog{position:relative;width:min(1040px,calc(100vw - 28px));max-height:calc(100dvh - 28px);overflow:auto;padding:22px 24px 20px;border:1px solid #394562;border-radius:18px;background:#111827;color:#eef2ff;box-shadow:0 28px 90px #000b;box-sizing:border-box}
.canvas-help-video-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:14px}
.canvas-help-video-title{margin:0;font-size:clamp(20px,2.5vw,28px);line-height:1.25}
.canvas-help-video-close{flex:0 0 auto;width:38px;height:38px;border:1px solid #46516a;border-radius:10px;background:#1b2435;color:#eef2ff;font-size:22px;line-height:1;cursor:pointer}
.canvas-help-video-frame{width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:12px;background:#0b1020 url('/assets/help/canvas_help_poster_20261024_v1.jpg') center/cover no-repeat}
.canvas-help-video-frame video{display:block;width:100%;height:100%;aspect-ratio:16/9;object-fit:contain;background:transparent}
.canvas-help-video-overlay.is-error .canvas-help-video-frame video{visibility:hidden}
.canvas-help-video-actions{display:flex;align-items:center;justify-content:flex-end;gap:9px;flex-wrap:wrap;margin-top:14px}
.canvas-help-video-actions button{min-height:42px;padding:9px 15px;border:1px solid #46516a;border-radius:10px;background:#1b2435;color:#eef2ff;font:inherit;font-size:13px;font-weight:750;cursor:pointer}
.canvas-help-video-actions .canvas-help-video-start{border-color:#7263ef;background:#6755e8;color:#fff}
.canvas-help-video-sound{margin-right:auto}
.canvas-help-video-note{margin:10px 0 0;color:#f3d98e;font-size:12px;font-weight:700}
.canvas-help-video-lines{display:grid;gap:5px;margin:12px 0 0;padding-left:20px;color:#cad3e7;font-size:13px;line-height:1.55}
body.canvas-help-video-open{overflow:hidden}
@media(max-width:640px){
  .canvas-help-video-overlay{padding:8px}
  .canvas-help-video-dialog{width:calc(100vw - 16px);max-height:calc(100dvh - 16px);padding:14px 12px 14px;border-radius:14px}
  .canvas-help-video-head{gap:8px;margin-bottom:10px}
  .canvas-help-video-close{width:34px;height:34px}
  .canvas-help-video-frame{aspect-ratio:16/9;border-radius:9px}
  .canvas-help-video-frame video{aspect-ratio:16/9}
  .canvas-help-video-actions{display:flex;flex-direction:column;align-items:stretch;gap:7px;margin-top:10px}
  .canvas-help-video-actions button{width:100%;min-height:40px}
  .canvas-help-video-sound{margin-right:0}
  .canvas-help-video-lines{font-size:12px;gap:4px}
}