/* Chapter-selected playback; native scrolling and a static no-script layout. */
.story { --story-top: 92px; scroll-margin-top: 84px; }
.story [hidden] { display: none !important; }
.story-heading { max-width: 760px; }
.story-heading h2 { font-size: clamp(2.2rem, 5vw, 3.7rem); line-height: 1.13; margin-bottom: 20px; }
.story-heading > p:last-child { max-width: 54ch; }
.story-preview { padding: 12px 18px; margin-bottom: 24px; border: 1px solid #9c703e; border-radius: 12px; color: #f4cd9b; background: #281f16; font-size: .85rem; }
.story-layout { display: grid; gap: 32px; }
.story-stage { min-width: 0; }
.story-display { display: none; }
.story-nav { display: flex; flex-wrap: wrap; gap: 8px; }
.story-nav a { display: flex; gap: 10px; align-items: center; padding: 12px 15px; min-height: 48px; border: 1px solid var(--border-strong); border-radius: 999px; font-size: .85rem; font-weight: 700; color: var(--ink-2); }
.story-nav a span { font-family: var(--mono); font-size: .7rem; color: var(--ink-3); }
.story-nav a:hover { text-decoration: none; border-color: var(--mint); }
.story-nav a[aria-current="step"] { color: var(--on-mint); background: var(--mint); border-color: var(--mint); }
.story-nav a[aria-current="step"] span { color: inherit; }
.story-hint { margin-top: 14px; font-size: .8rem; color: var(--ink-3); }
.story-chapter { padding: 28px 0 40px; border-top: 1px solid var(--border); scroll-margin-top: calc(var(--story-top) + 20px); }
.story-copy { margin-bottom: 28px; }
.story-copy h3 { font-size: clamp(1.6rem, 3vw, 2.2rem); line-height: 1.2; margin-bottom: 18px; }
.story-copy > p:last-child { color: var(--ink-2); font-size: 1rem; max-width: 39ch; }
.story-step { font-family: var(--mono); font-size: .75rem; color: var(--ink-3); margin-bottom: 18px; }
.story-step span { color: var(--mint-bright); margin-right: 12px; }
.story-media { min-width: 0; padding: clamp(12px, 2vw, 22px); border: 1px solid var(--border-strong); border-radius: 24px; background: radial-gradient(ellipse at 50% 40%, #18302a 0%, #131a19 45%, #101316 90%); scroll-margin-top: calc(var(--story-top) + 12px); }
.story-screen { position: relative; display: grid; place-items: center; width: 100%; aspect-ratio: 4 / 3; background: #0b0d10; border: 1px solid #36443e; border-radius: 12px; overflow: hidden; }
.story-screen img, .story-screen video { position: absolute; width: 100%; height: 100%; object-fit: contain; }
.story-screen video { opacity: 0; }
.story-media[data-has-frame="true"] video { opacity: 1; }
.story-media[data-has-frame="true"] img { opacity: 0; }
.story-media[data-story-device="iphone"] .story-screen { aspect-ratio: 1206 / 2622; max-height: min(58svh, 520px); width: auto; margin: 0 auto; border-radius: 22px; }
.story-media figcaption { display: grid; gap: 3px; text-align: center; margin-top: 16px; font-size: .7rem; color: var(--ink-3); }
.story-device-label { color: var(--ink-2); font-family: var(--mono); font-size: .75rem; }
.story-controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: center; margin-top: 14px; min-height: 48px; }
.story-controls button { font: 700 .85rem var(--sans); color: var(--ink); background: #202a27; border: 1px solid #657b72; padding: 12px 20px; min-height: 48px; border-radius: 999px; cursor: pointer; }
.story-controls button:hover { background: #30463c; }
.story-status { font-size: .8rem; color: var(--ink-2); }
.story :is(a, button):focus-visible { outline: 3px solid var(--mint-bright); outline-offset: 5px; }
.story-full-video { margin-top: 28px; }

/* The script moves the same media nodes; there are no duplicate video players. */
@media (min-width: 1024px) and (min-height: 640px) {
    .story[data-layout="sticky"] .story-layout { grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); gap: 42px; align-items: start; }
    .story[data-layout="sticky"] .story-stage { position: sticky; top: var(--story-top); }
    .story[data-layout="sticky"] .story-display { display: grid; height: min(61vh, 590px); margin-bottom: 20px; }
    .story[data-layout="sticky"] .story-media { grid-area: 1 / 1; min-height: 0; display: flex; flex-direction: column; justify-content: center; opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .24s ease, visibility .24s; }
    .story[data-layout="sticky"] .story-media[data-active="true"] { opacity: 1; visibility: visible; pointer-events: auto; }
    .story[data-layout="sticky"] .story-screen { flex: 1; min-height: 0; max-height: 410px; }
    .story[data-layout="sticky"] .story-media[data-story-device="iphone"] .story-screen { flex: none; height: calc(min(61vh, 590px) - 172px); max-height: none; }
    .story[data-layout="sticky"] .story-controls { flex-shrink: 0; }
    .story[data-layout="sticky"] .story-nav a { padding: 10px 12px; gap: 6px; font-size: .78rem; }
    .story[data-layout="sticky"] .story-chapter { min-height: 72vh; display: flex; flex-direction: column; justify-content: center; padding-left: 22px; border-top: 0; border-left: 2px solid var(--border); }
    .story[data-layout="sticky"] .story-chapter[data-active="true"] { border-left-color: var(--mint-bright); }
    .story[data-layout="sticky"] .story-copy { margin-bottom: 0; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .story[data-layout="sticky"] .story-media { transition: none; }
}