/* Landing-only shell. The guide retains its own complete v15 stylesheet stack. */
.mini-lesson .mini-guide-open { min-height: 48px; padding: 13px 19px; border: 1px solid #805c40; border-radius: 5px; background: #172f3b; color: #fff9ed; font: 500 16px/1.4 var(--sans); cursor: pointer; text-align: center; }
.mini-lesson .mini-guide-open:hover { background: #244453; }
.mini-lesson .mini-guide-open:focus-visible { outline: 3px solid #80593d; outline-offset: 4px; }
.mini-lesson .mini-guide-copy > p:last-child { max-width: 51ch; }
.companion-dialog { box-sizing: border-box; inset: 0; width: min(1160px, calc(100% - 48px)); height: min(920px, calc(100dvh - 48px)); max-width: none; max-height: none; margin: auto; padding: 0; border: 1px solid #a9b5ad; border-radius: 10px; background: #faf9f5; color: #172f3b; box-shadow: 0 28px 100px #09151d66; overflow: hidden; }
.companion-dialog::backdrop { background: #0a1722cc; }
.companion-dialog[open] { display: flex; flex-direction: column; }
.companion-dialog .companion-dialog-bar { display: flex; flex: 0 0 auto; align-items: center; justify-content: space-between; gap: 14px; padding: 10px 20px; border-bottom: 1px solid #d8ded5; background: #faf9f5; }
.companion-dialog .companion-dialog-title { margin: 0; color: #48615d; font: 500 15px/1.3 var(--sans); }
.companion-dialog .companion-return { display: inline-flex; align-items: center; justify-content: center; gap: 9px; flex-shrink: 0; min-height: 44px; padding: 9px 13px; border: 1px solid #b6c1b8; border-radius: 5px; color: #172f3b; background: #f5f5ee; font: 500 15px/1.3 var(--sans); cursor: pointer; }
.companion-dialog .companion-return:focus-visible { outline: 3px solid #89612b; outline-offset: 2px; }
.companion-dialog .companion-frame { display: block; flex: 1 1 auto; width: 100%; height: 100%; min-height: 0; border: 0; background: #faf9f5; }
html.companion-open { overflow: hidden; }
@media (max-width: 800px) { .mini-lesson .mini-guide-open { grid-column: 2; justify-self: start; } }
@media (max-width: 620px) {
  .companion-dialog { width: 100%; height: 100vh; height: 100dvh; border: 0; border-radius: 0; }
  .companion-dialog .companion-dialog-bar { padding: calc(6px + env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) 6px max(12px, env(safe-area-inset-left)); gap: 10px; }
  .companion-dialog .companion-dialog-title { max-width: 14ch; font-size: 13px; }
  .companion-dialog .companion-return { padding-inline: 10px; }
  .companion-dialog .companion-frame { padding-bottom: env(safe-area-inset-bottom); box-sizing: border-box; }
}
@media (max-width: 480px) { .mini-lesson .mini-guide-open { margin-top: 20px; width: 100%; } }