*{box-sizing:border-box}body{margin:0;font:16px/1.7 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--store-text);background:#fff}a{color:var(--store-action);text-underline-offset:4px}a:focus-visible,button:focus-visible,summary:focus-visible,video:focus-visible{outline:3px solid var(--store-action);outline-offset:4px}.watch-header,main,footer{width:min(900px,100%);margin:auto;padding:16px 24px}.watch-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--store-line)}.watch-header a{display:inline-flex;align-items:center;min-height:44px}.watch-header a:first-child{font-weight:700;font-size:22px;text-decoration:none}main{padding-top:20px}h1{font-size:clamp(20px,3vw,28px);line-height:1.4;margin:0 0 20px}.tutorial-video{display:block;width:100%;height:auto;max-height:64svh;background:#171717;object-fit:contain;border-radius:10px}.video-step-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-top:12px}.video-step-nav button{font:inherit;font-size:14px;line-height:1.5;min-height:52px;padding:8px;border:1px solid var(--store-line);border-radius:6px;background:#fff;color:var(--store-ink);cursor:pointer;text-align:left}.video-step-nav span{display:block;color:var(--store-muted);font-size:13px}.video-step-nav [aria-current]{background:var(--store-selected);border-color:var(--store-action)}.watch-description{color:var(--store-muted);font-size:14px}.watch-links{display:flex;gap:12px 24px;flex-wrap:wrap}.watch-links a{display:inline-flex;min-height:44px;align-items:center}details{margin-top:20px;border-top:1px solid var(--store-line);padding-top:12px}summary{cursor:pointer;min-height:44px}details li{margin-bottom:12px}footer{margin-top:24px;border-top:1px solid var(--store-line);font-size:14px}.skip-link{position:absolute;left:16px;top:-100px;background:#fff;padding:12px;z-index:10}.skip-link:focus{top:8px}@media(max-width:600px){.watch-header,main,footer{padding-inline:16px}.video-step-nav{grid-template-columns:repeat(2,minmax(0,1fr))}.tutorial-video{max-height:56svh}h1{margin-bottom:16px}}