#demo-hero .d-hero-desktop { background: var(--bg-raised); font-family: var(--font-ui); }
#demo-hero .d-hero-wallpaper { position: absolute; inset: 0; width: 1120px; height: 640px; opacity: .6; }
#demo-hero .d-hero-terminal { position: absolute; left: 650px; top: 96px; width: 420px; height: 300px; }
#demo-hero .d-hero-terminal pre { margin: 0; padding: 24px; color: var(--ink-3); font: 12px/1.9 var(--font-mono); }
#demo-hero .d-hero-reader-wrap { position: absolute; left: 72px; top: 60px; width: 640px; height: 504px; isolation: isolate; z-index: 2; }
#demo-hero .d-hero-reader { width: 640px; height: 504px; }
#demo-hero .mac-window { box-shadow: var(--shadow-window); filter: none; backdrop-filter: none; }
#demo-hero .focus-tag { position: absolute; top: -16px; left: 16px; z-index: 3; }
#demo-hero .d-hero-viewport { height: 474px; overflow: hidden; }
#demo-hero .d-hero-article { padding: 32px 40px 80px; color: var(--ink); font: 15px/1.6 var(--font-display); font-optical-sizing: auto; }
#demo-hero .d-hero-article h3 { margin: 0 0 16px; font: 400 22px/1.2 var(--font-display); }
#demo-hero .d-hero-article p { margin: 0 0 16px; }
#demo-hero .d-hero-word { position: relative; isolation: isolate; }
#demo-hero .d-hero-word::before { position: absolute; inset: 0; z-index: -1; border-radius: 1px; background: var(--select); opacity: 0; content: ""; }
#demo-hero .d-hero-word.is-selected::before { opacity: 1; }
#demo-hero .d-hero-selection.is-clearing .d-hero-word::before { opacity: 0; transition: opacity 150ms ease; }
#demo-hero .d-hero-figure { width: 460px; height: 150px; margin: 16px 0; }
#demo-hero .d-hero-diagram { display: block; width: 100%; height: 100%; color: var(--ink-2); font: 11px var(--font-ui); }
#demo-hero .d-hero-switches { position: absolute; left: 24px; bottom: 16px; display: flex; align-items: center; gap: 5px; padding: 6px 10px; border: .5px solid var(--line); border-radius: 999px; background: var(--panel); color: var(--ink-2); font-size: 12px; line-height: 1.3; }
#demo-hero .d-hero-switches strong { color: var(--ink); font-weight: 500; }
#demo-hero .d-hero-pointer { position: absolute; top: 0; left: 0; width: 20px; height: 24px; z-index: 12; pointer-events: none; }
#demo-hero .d-hero-pointer svg { display: none; width: 20px; height: 24px; }
#demo-hero .d-hero-pointer[data-kind="arrow"] .d-hero-arrow,
#demo-hero .d-hero-pointer[data-kind="ibeam"] .d-hero-ibeam,
#demo-hero .d-hero-pointer[data-kind="crosshair"] .d-hero-crosshair { display: block; }
#demo-hero .d-hero-ibeam { transform: translate(-10px, -12px); }
#demo-hero .d-hero-crosshair { transform: translate(-10px, -12px); }
#demo-hero .d-hero-capture { position: absolute; inset: 0; z-index: 6; width: 1120px; height: 640px; opacity: 0; pointer-events: none; }
#demo-hero .d-hero-size-position { position: absolute; left: 0; top: 0; z-index: 7; }
#demo-hero .d-hero-size { padding: 4px 8px; border: .5px solid var(--line); border-radius: 6px; background: var(--panel); color: var(--ink); font-size: 11px; line-height: 1.4; opacity: 0; }
#demo-hero .d-hero-thumb { position: absolute; left: 0; top: 0; z-index: 9; width: 120px; height: 42px; padding: 2px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); box-shadow: var(--shadow-window); transform-origin: top left; opacity: 0; }
#demo-hero .d-hero-quick { position: absolute; left: 720px; top: 330px; z-index: 8; width: 360px; height: 190px; box-shadow: var(--shadow-window); opacity: 0; transform: scale(.98); }
#demo-hero .d-hero-note-title { display: flex; height: 38px; align-items: center; justify-content: center; padding: 0 32px; overflow: hidden; color: var(--ink-3); font: 500 13px/1 var(--font-ui); white-space: nowrap; text-overflow: ellipsis; }
#demo-hero .d-hero-note-body { padding: 6px 20px 38px; font: 15px/1.25 var(--font-ui); }
#demo-hero .d-hero-note-text { white-space: pre-wrap; }
#demo-hero .d-hero-quick .fn-caret { height: 16.5px; margin-left: 1px; vertical-align: -3px; border-radius: 1px; }
#demo-hero .d-hero-quick.is-reading .fn-caret { animation: none; opacity: 0; }
#demo-hero .d-hero-toast-anchor { position: absolute; bottom: var(--toast-bottom, 28px); left: 50%; z-index: 10; width: max-content; transform: translateX(-50%) scale(var(--toast-scale, .8)); transform-origin: bottom center; pointer-events: none; }
#demo-hero .stage { --toast-scale: var(--toast-demo-scale); }
#demo-hero .d-hero-toast { opacity: 0; transform: translateY(8px); }
#demo-hero .d-hero-key-position { position: absolute; left: 50%; bottom: calc(var(--toast-bottom, 28px) + 56px * var(--toast-scale, .8) + 12px); z-index: 11; width: 112px; margin-left: -56px; text-align: center; opacity: 0; }
#demo-hero .d-hero-key-position .fn-keys { white-space: nowrap; }
#demo-hero .d-hero-controls { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
#demo-hero .d-hero-chapters { display: flex; flex: 1; flex-wrap: wrap; align-items: center; gap: 8px; }
#demo-hero .d-hero-chapter { position: relative; display: inline-flex; min-height: 44px; align-items: center; gap: 8px; padding: 8px 8px 10px; border: 0; border-radius: 4px; background: transparent; color: var(--ink-2); font: 13px/1 var(--font-ui); cursor: pointer; }
#demo-hero .d-hero-chapter:hover { background: var(--fill-soft); }
#demo-hero .d-hero-chapter[aria-current="step"] { color: var(--ink); }
#demo-hero .d-hero-inline-keys { display: inline-flex; gap: 3px; }
#demo-hero .d-hero-inline-keys .keycap { min-width: 19px; min-height: 20px; padding: 0 3px; border-radius: 4px; color: inherit; font-size: 11px; }
#demo-hero .d-hero-progress { position: absolute; bottom: 0; left: 8px; right: 8px; height: 2px; background: var(--accent); transform: scaleX(0); transform-origin: left; }
#demo-hero .fn-pause { flex-shrink: 0; margin-left: auto; }
#demo-hero .fn-pause[hidden] { display: none; }
#demo-hero.d-hero-frozen .fn-caret { animation-play-state: paused; }
#demo-hero.d-hero-frozen .focus-tag::after { animation-play-state: paused; }
@media (max-width: 480px) {
  #demo-hero .d-hero-controls { align-items: flex-start; gap: 4px; }
  #demo-hero .d-hero-chapters { gap: 4px 8px; }
  #demo-hero .d-hero-chapter { padding-inline: 4px; font-size: 13px; }
  #demo-hero .fn-pause { margin-top: 6px; }
}
@media (prefers-reduced-motion: reduce) {
  #demo-hero .keycap { transition: none; }
  #demo-hero .fn-caret { animation: none; }
}

/* Keep message annotations legible while the desktop scenery scales down. */
#demo-hero .stage.is-compact .focus-tag { font-size: 14px; transform: scale(var(--boost)); transform-origin: bottom left; }
#demo-hero .stage.is-compact { --toast-scale: calc(min(var(--boost), 1.6) * var(--toast-demo-scale)); --toast-bottom: calc(16px + 34px * var(--boost) + 12px); }
#demo-hero .stage.is-compact .d-hero-toast-anchor { transform: translateX(-50%) scale(var(--toast-scale)); transform-origin: bottom center; }
#demo-hero .stage.is-compact .fn-keys--overlay { transform: scale(var(--boost)); transform-origin: bottom center; }
#demo-hero .stage.is-compact .fn-keys--overlay .keycap { font-size: 14px; }
#demo-hero .stage.is-compact .d-hero-switches { font-size: 14px; transform: scale(var(--boost)); transform-origin: bottom left; }
#demo-hero .stage.is-compact .d-hero-size { font-size: 14px; transform: scale(var(--boost)); transform-origin: top left; }
/* Reserve the enlarged chip's height, keeping Reader at least 24px above it. */
#demo-hero .stage.is-compact .d-hero-reader-wrap,
#demo-hero .stage.is-compact .d-hero-reader { height: min(504px, calc(540px - 34px * var(--boost))); }
#demo-hero .stage.is-compact .d-hero-viewport { height: calc(min(504px, calc(540px - 34px * var(--boost))) - 30px); }
#demo-hero .d-hero-inline-keys .keycap { font-size: 13px; min-height: 24px; min-width: 21px; }