/* Shared optional video player. Page typography and colors stay inherited. */
.walkthrough-link { min-height:44px; display:inline-flex; align-items:center; gap:10px; color:var(--green); }
.walkthrough-play { flex:none; width:28px; height:28px; padding:7px; border:1px solid currentColor; border-radius:50%; fill:currentColor; }
.walkthrough-link:hover .walkthrough-play { background:var(--green); color:var(--paper); border-color:var(--green); }
.walkthrough-link-label { display:flex; flex-direction:column; gap:2px; line-height:1.4; }
.walkthrough-runtime { color:var(--muted); font-size:var(--text-sm); font-weight:400; white-space:nowrap; }
.welcome-video-link { margin-top:18px; }
html.walkthrough-open { overflow:hidden; }
.walkthrough-dialog { box-sizing:border-box; width:min(1100px,calc(100% - 40px)); max-width:none; max-height:calc(100dvh - 40px); margin:auto; padding:0; overflow:auto; border:1px solid var(--line); border-radius:10px; background:var(--paper); color:var(--ink); box-shadow:0 24px 90px #17271f40; }
.walkthrough-dialog::backdrop { background:#17271fcc; }
.walkthrough-dialog:not([open]) { display:none; }
.walkthrough-header { display:flex; justify-content:space-between; align-items:center; gap:20px; padding:20px 24px; }
.walkthrough-header h2 { margin:0; font:500 var(--text-xl)/1.4 var(--sans); letter-spacing:-.4px; }
.walkthrough-header p { margin:4px 0 0; color:var(--muted); font:400 var(--text-base)/1.5 var(--sans); }
.walkthrough-close { display:inline-flex; align-items:center; justify-content:center; gap:8px; flex:none; min-height:44px; padding:10px 14px; border:1px solid var(--line); border-radius:4px; background:var(--soft); color:var(--ink); font:500 var(--text-base)/1.3 var(--sans); cursor:pointer; }
.walkthrough-close:hover { border-color:var(--green); box-shadow:inset 0 2px 3px #294c3b14; }
.walkthrough-close svg { width:14px; height:14px; stroke:currentColor; stroke-width:1.5; fill:none; }
.walkthrough-video { display:block; width:100%; height:auto; aspect-ratio:16/9; background:var(--paper); }
.walkthrough-footer { padding:15px 24px 20px; }
.walkthrough-footer details { font:400 var(--text-base)/1.7 var(--sans); }
.walkthrough-footer summary { width:fit-content; padding:6px 0; color:var(--green); font-weight:500; cursor:pointer; }
.walkthrough-transcript { max-width:70ch; padding-top:6px; }
.walkthrough-transcript p + p { margin-top:12px; }
.walkthrough-error { padding:12px 0; font-size:var(--text-base); }
.walkthrough-error a,.walkthrough-download { color:var(--green); text-decoration:underline; text-underline-offset:3px; }
.walkthrough-download { display:inline-block; margin-top:14px; font-size:var(--text-base); }
.walkthrough-dialog :focus-visible { outline:3px solid #739b69; outline-offset:3px; }
@media(max-width:767px) {
  .walkthrough-dialog { width:calc(100% - 20px); max-height:calc(100dvh - 20px); border-radius:7px; }
  .walkthrough-header { gap:12px; padding:15px; }


  .walkthrough-close { padding:10px; }
  .walkthrough-footer { padding:12px 15px 16px; }

  .hero-actions .walkthrough-link { gap:8px; }
  .hero-actions .walkthrough-play { width:24px; height:24px; padding:6px; }
}