.walkthrough,.walkthrough-modal-panel,.walkthrough-prompt{--wt-line:var(--np-line,var(--line));--wt-muted:var(--np-muted,var(--muted));--wt-soft:var(--np-soft,rgba(255,255,255,0.045));--wt-accent:var(--np-accent,var(--lime));--wt-tap:44px}.walkthrough{display:grid;grid-gap:14px;gap:14px;min-width:0;max-width:100%;padding:16px;border:1px solid var(--wt-line);border-radius:20px;background:var(--wt-soft)}.walkthrough-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:6px 12px}.walkthrough .walkthrough-title{margin:0;font-size:18px;letter-spacing:-.4px}.walkthrough-duration{color:var(--wt-muted);font-size:13px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.walkthrough-frame{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:14px;background:#000}.walkthrough-frame video,.walkthrough-poster img{display:block;width:100%;height:100%;object-fit:contain}.walkthrough-poster{all:unset;position:absolute;inset:0;cursor:pointer;display:block}.walkthrough-poster:focus-visible{outline:3px solid var(--focus-ring,var(--wt-accent));outline-offset:-3px}.walkthrough-play{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);display:inline-flex;align-items:center;gap:8px;max-width:calc(100% - 24px);min-height:var(--wt-tap);padding:0 16px;border-radius:999px;background:var(--wt-accent);color:#fff8f1;font-size:13px;font-weight:800;white-space:nowrap;box-shadow:0 10px 26px rgba(0,0,0,.35)}.walkthrough-play-short{display:none}.walkthrough-note{margin:0;color:var(--wt-muted);font-size:13px}.walkthrough-chapters{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,150px),1fr));grid-gap:6px;gap:6px}.walkthrough-chapters button{width:100%;min-height:var(--wt-tap);display:flex;align-items:center;gap:10px;padding:6px 12px;border:1px solid var(--wt-line);border-radius:10px;background:transparent;color:inherit;font:inherit;font-size:13px;text-align:left;cursor:pointer}.walkthrough-chapters button:hover{border-color:var(--wt-accent)}.walkthrough-chapters time{color:var(--wt-muted);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;min-width:34px}.walkthrough-transcript summary{min-height:var(--wt-tap);display:flex;align-items:center;cursor:pointer;font-weight:700}.walkthrough-transcript section{margin-top:10px}.walkthrough-transcript p{margin:2px 0 0;color:var(--wt-muted);line-height:1.6;overflow-wrap:anywhere}.walkthrough-transcript-title{color:inherit!important;font-weight:700}.walkthrough-prompt{display:flex;align-items:center;flex-wrap:wrap;gap:12px 16px;margin:14px 0;padding:14px 16px;border:1px solid var(--wt-line);border-radius:18px;background:var(--wt-soft)}.walkthrough-prompt-copy{flex:1 1 220px;min-width:0}.walkthrough-prompt-copy strong{display:block}.walkthrough-prompt-copy p{margin:2px 0 0;color:var(--wt-muted);font-size:13px}.walkthrough-prompt .button{min-height:var(--wt-tap)}.walkthrough-icon-button{display:inline-grid;place-items:center;min-width:var(--wt-tap,44px);min-height:var(--wt-tap,44px);border:1px solid var(--wt-line,var(--line));border-radius:12px;background:transparent;color:inherit;cursor:pointer}.walkthrough-modal{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:16px;background:rgba(0,0,0,.72);overflow-y:auto}.walkthrough-modal-panel{width:min(1100px,100%);max-height:calc(100dvh - 32px);overflow-y:auto;padding:12px;border-radius:22px;background:var(--np-panel,var(--canvas));color:var(--np-ink,var(--ink))}.walkthrough-modal-bar{display:flex;justify-content:flex-end;margin-bottom:8px}.hero-preview-stage{position:relative}.hero-layer{transition:opacity .6s ease}.hero-layer[data-active=false]{opacity:0;pointer-events:none}.hero-video-layer{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;gap:12px;padding:20px}.hero-video-layer video{width:100%;aspect-ratio:16/9;border-radius:14px;background:#000;object-fit:contain;cursor:pointer}.hero-video-controls{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.hero-video-controls .button,.hero-watch{min-height:44px;justify-content:center}.hero-watch{align-self:center}@media (max-width:520px){.walkthrough{padding:12px;border-radius:16px}.walkthrough-play-long{display:none}.walkthrough-play-short{display:inline}.walkthrough-prompt .button{flex:1 1 auto;justify-content:center}.hero-video-layer{padding:12px}.hero-video-controls .button{flex:1 1 auto;white-space:normal}}@media (prefers-reduced-motion:reduce){.hero-layer{transition:none}}.walkthrough-section-player{max-width:880px;margin:0 auto}