/* Shared foundations and components; no page-specific layout rules. */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font-family); font-size: var(--font-body); color: var(--color-ink); background: var(--color-white); }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
button, a, input { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--color-ink); outline-offset: 4px; box-shadow: var(--focus-ring); }
[hidden] { display: none !important; }
svg { display: block; }
.site, .frame { width: 100%; }
.content-container { width: min(100%, var(--content-max)); margin-inline: auto; padding-inline: var(--page-gutter); }
.skip-link { position: fixed; top: -100px; left: var(--space-4); z-index: 100; padding: var(--space-3) var(--space-4); background: var(--color-white); border-radius: var(--radius-sm); }
.skip-link:focus { top: var(--space-4); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: var(--space-5); min-height: var(--nav-height); padding: var(--space-2) clamp(20px, 4.4vw, 64px); background: var(--color-white); position: relative; z-index: 20; }
.brand { flex-shrink: 0; }
.brand img { width: 140px; height: 76px; object-fit: contain; }
.menu { display: flex; align-items: center; justify-content: center; gap: clamp(18px, 3.2vw, 38px); flex: 1; }
.menu a { font-size: var(--font-small); font-weight: var(--weight-bold); white-space: nowrap; }
.menu a:hover, .edit-link:hover { color: var(--color-purple); }
.nav-actions { display: flex; align-items: center; gap: var(--space-5); }
.icon-btn { background: transparent; border: 0; padding: 0; width: 28px; height: 32px; display: grid; place-items: center; color: var(--color-ink); }
.icon-btn svg { width: 28px; height: 28px; }
.btn { display: inline-flex; justify-content: center; align-items: center; gap: var(--space-4); min-height: 48px; border: 0; border-radius: var(--radius-pill); padding: 12px 34px; font-size: var(--font-label); font-weight: var(--weight-bold); line-height: 1.2; color: var(--color-white); background: var(--color-purple); transition: background var(--transition), transform var(--transition); }
.btn:hover { background: #4300c7; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: default; }
.btn-secondary { background: var(--color-white); color: var(--color-purple); border: 2px solid var(--color-purple); }
.btn-secondary:hover { color: var(--color-white); }
.button-arrow { width: 32px; height: 24px; flex-shrink: 0; }
.full { width: 100%; margin-top: var(--space-5); }
.card, .gallery, .combo-card { background: var(--color-white); border: 1px solid var(--color-line); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); }
.section-title { margin: 0; font-size: clamp(2.5rem, 5.5vw, 4rem); line-height: 1; font-weight: var(--weight-heavy); letter-spacing: -.04em; }
.section-title span { color: var(--color-cyan); }
.eyebrow { margin: 0 0 var(--space-4); color: var(--color-purple); font-size: var(--font-small); font-weight: var(--weight-bold); }
.qty-box { display: inline-flex; align-items: center; overflow: hidden; border: 1px solid var(--color-line); border-radius: var(--radius-pill); background: var(--color-white); }
.qty-box button { width: 52px; height: 48px; border: 0; background: transparent; color: var(--color-purple); font-size: 26px; }
.qty-box button:hover { background: var(--color-ice); }
.qty-box span { width: 44px; display: inline-flex; justify-content: center; font-weight: var(--weight-bold); }
.thumb, .swatch { border: 2px solid var(--color-line); border-radius: var(--radius-md); background: var(--color-white); transition: border-color var(--transition); }
.thumb:hover, .swatch:hover { border-color: var(--color-cyan); }
.thumb.active, .swatch.active { border-color: var(--color-purple); }
.search-panel { position: relative; z-index: 21; background: var(--color-ice); padding: var(--space-5) var(--page-gutter); }
.search-panel label { display: block; margin-bottom: var(--space-3); font-weight: var(--weight-bold); }
.search-row { display: flex; gap: var(--space-3); max-width: 680px; }
input { width: 100%; min-width: 0; min-height: 48px; border: 1px solid var(--color-line); border-radius: var(--radius-sm); padding: var(--space-3); color: var(--color-ink); background: var(--color-white); }
.search-panel p:empty { display: none; }
[id] { scroll-margin-top: var(--space-6); }
@media (max-width: 800px) {
 .nav { flex-wrap: wrap; gap: var(--space-3); padding: var(--space-3) var(--page-gutter); }
 .brand img { width: 120px; height: 62px; }
 .menu { flex: 1 0 100%; order: 3; gap: var(--space-5); padding-block: var(--space-2); }
 .menu a { font-size: 12px; }
 .nav-actions { gap: var(--space-4); }
 .nav-actions .btn { font-size: var(--font-body); padding: 12px 24px; }
}
@media (max-width: 380px) {
 .menu { gap: var(--space-3); }
 .brand img { width: 98px; }
 .nav-actions { gap: var(--space-3); }
 .nav-actions .btn { padding-inline: var(--space-4); }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; } }
/* Keep the reference header on one row at its 860 px width. */
@media (min-width: 801px) {
 .nav { gap: 18px; }
 .menu { gap: clamp(20px,2.5vw,32px); }
 .menu a { font-size: 13px; }
 .nav-actions { gap: 22px; flex-shrink: 0; }
 .nav-actions .btn { min-width: 144px; padding: 12px 26px; font-size: 16px; white-space: nowrap; }
}
/* Original media and instructional cards, reusable on any page. */
.media-panel { margin: 0; padding: 0; overflow: hidden; background: var(--color-white); border: 1px solid var(--color-line); border-radius: var(--radius-md); }
.media-panel > img { display: block; width: 100%; height: auto; }
.media-panel figcaption { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-3); padding: var(--space-4) var(--space-5); font-size: var(--font-small); font-weight: var(--weight-bold); }
.media-link { display: inline-flex; align-items: center; gap: var(--space-2); color: var(--color-purple); text-decoration: underline; text-underline-offset: 3px; }
.media-link:hover { color: var(--color-ink); }
.step-list { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: var(--space-4); margin: var(--space-5) 0 0; padding: 0; list-style: none; }
.step-card { padding: var(--space-5); }
.step-number { display: grid; place-items: center; width: 44px; height: 44px; border-radius: var(--radius-pill); color: var(--color-white); background: var(--color-purple); font-size: 24px; font-weight: var(--weight-heavy); }
.step-card:nth-child(2) .step-number { background: var(--color-cyan); color: var(--color-ink); }
.step-card:nth-child(3) .step-number { background: var(--color-pink); }
.step-card:nth-child(4) .step-number { background: var(--color-yellow); color: var(--color-ink); }
.step-card h3 { margin: var(--space-4) 0 var(--space-3); font-size: 22px; letter-spacing: -.03em; }
.step-card p { margin: 0; font-size: var(--font-body); line-height: 1.5; color: var(--color-muted); }
@media (max-width: 800px) { .step-list { grid-template-columns: repeat(2,minmax(0,1fr)); } }
@media (max-width: 480px) { .step-list { grid-template-columns: 1fr; } .media-panel figcaption { padding: var(--space-4); } }

/* Illustrated steps frame the original artwork, without redrawing it. */
.illustrated-steps { grid-template-columns: repeat(2,minmax(0,1fr)); gap: var(--space-5); }
.illustrated-steps .step-card { display: flex; flex-direction: column; gap: var(--space-5); border-radius: var(--radius-md); }
.step-heading { display: flex; align-items: center; gap: var(--space-4); }
.step-heading .step-number { flex-shrink: 0; }
.step-heading h3 { margin: 0; font-size: 28px; }
.step-art { display: block; width: 100%; height: auto; aspect-ratio: 372 / 380; max-width: 340px; margin-inline: auto; border-radius: var(--radius-sm); overflow: hidden; }
.illustrated-steps .step-card p { margin-top: auto; color: var(--color-muted); }
@media (min-width: 1200px) { .illustrated-steps { grid-template-columns: repeat(4,minmax(0,1fr)); gap: var(--space-4); } .step-heading { gap: var(--space-3); } .step-heading h3 { font-size: 23px; } }
@media (max-width: 600px) { .illustrated-steps { grid-template-columns: 1fr; } }
.skip-link:not(:focus) { clip-path: inset(50%); width: 1px; height: 1px; overflow: hidden; white-space: nowrap; padding: 0; }

/* Demonstration imagery follows the actual prototype footage. */
.step-art.step-photo { aspect-ratio: 1; object-fit: contain; background: var(--color-cream); }
.prototype-demo { margin-top: var(--space-5); padding: var(--space-4) var(--space-5); border: 1px solid var(--color-line); border-radius: var(--radius-md); background: var(--color-white); }
.prototype-demo summary { cursor: pointer; color: var(--color-purple); font-weight: var(--weight-bold); }
.prototype-demo > p { font-size: var(--font-small); color: var(--color-muted); line-height: 1.5; }
.prototype-demo video { display: block; width: min(100%,520px); height: auto; margin-top: var(--space-4); border-radius: var(--radius-sm); }