.zapi-product-builder {
    --zapi-accent: #111827;
    --zapi-muted: #6b7280;
    --zapi-border: rgba(17, 24, 39, 0.12);
    --zapi-surface: #ffffff;
    --zapi-soft: #f8fafc;
    clear: both;
    margin: 40px auto;
    color: #111827;
}
.zapi-builder-width-boxed { max-width: 1120px; }
.zapi-builder-width-wide { max-width: 1320px; }
.zapi-builder-width-full { max-width: none; width: 100%; }
.zapi-builder-gap-compact .zapi-builder-section { margin: 28px 0; }
.zapi-builder-gap-normal .zapi-builder-section { margin: 48px 0; }
.zapi-builder-gap-large .zapi-builder-section { margin: 72px 0; }
.zapi-builder-section {
    box-sizing: border-box;
    overflow: hidden;
}
.zapi-builder-nav {
    position: sticky;
    top: 32px;
    z-index: 2;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    padding: 12px;
    margin: 0 0 24px;
    background: rgba(255,255,255,0.92);
    border: 1px solid var(--zapi-border);
    border-radius: 999px;
    backdrop-filter: blur(8px);
}
.zapi-builder-nav a {
    display: inline-flex;
    padding: 7px 12px;
    border-radius: 999px;
    color: #111827;
    text-decoration: none;
    font-size: 13px;
    line-height: 1;
}
.zapi-builder-nav a:hover,
.zapi-builder-nav a.is-active {
    color: #fff;
    background: var(--zapi-accent);
}
.zapi-builder-copy-block h2,
.zapi-builder-copy-block h3 {
    margin: 0 0 14px;
    color: #111827;
    line-height: 1.12;
    letter-spacing: -0.02em;
}
.zapi-builder-copy-block h2 { font-size: clamp(30px, 4.2vw, 56px); }
.zapi-builder-copy-block h3 { font-size: clamp(22px, 2.6vw, 36px); }
.zapi-builder-copy-block p {
    margin: 0 0 14px;
    color: var(--zapi-muted);
    font-size: 16px;
    line-height: 1.75;
}
.zapi-builder-hero-inner,
.zapi-builder-split-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 56px);
    align-items: center;
}
.zapi-builder-section-hero {
    padding: clamp(28px, 5vw, 72px);
    border-radius: 28px;
    background: linear-gradient(135deg, #f8fafc, #ffffff);
    border: 1px solid var(--zapi-border);
}
.zapi-builder-hero-media img,
.zapi-builder-media img,
.zapi-builder-image-stack img,
.zapi-builder-card img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 18px;
}
.zapi-builder-layout-media-right .zapi-builder-media {
    order: 2;
}
.zapi-builder-layout-media-right .zapi-builder-copy {
    order: 1;
}
.zapi-builder-bullets {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
}
.zapi-builder-bullets li {
    position: relative;
    padding-left: 26px;
    color: #374151;
    line-height: 1.6;
}
.zapi-builder-bullets li:before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.66em;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--zapi-accent);
}
.zapi-builder-section-heading {
    max-width: 760px;
    margin: 0 auto 28px;
    text-align: center;
}
.zapi-builder-card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}
.zapi-builder-card {
    padding: 18px;
    background: var(--zapi-surface);
    border: 1px solid var(--zapi-border);
    border-radius: 18px;
    box-shadow: 0 10px 32px rgba(17,24,39,.06);
}
.zapi-builder-card h4,
.zapi-builder-video-card h4 {
    margin: 14px 0 8px;
    color: #111827;
    font-size: 17px;
}
.zapi-builder-card p {
    margin: 0;
    color: var(--zapi-muted);
    line-height: 1.65;
}
.zapi-builder-image-stack {
    display: grid;
    gap: 18px;
}
.zapi-builder-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--zapi-border);
    border-radius: 18px;
    background: #fff;
}
.zapi-builder-comparison-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 640px;
}
.zapi-builder-comparison-table th,
.zapi-builder-comparison-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--zapi-border);
    text-align: left;
    vertical-align: top;
}
.zapi-builder-comparison-table th {
    background: var(--zapi-soft);
    color: #111827;
    font-weight: 700;
}
.zapi-builder-comparison-table tr:last-child td {
    border-bottom: 0;
}
.zapi-builder-video-grid {
    display: grid;
    gap: 22px;
}
.zapi-builder-video-card {
    padding: 18px;
    border: 1px solid var(--zapi-border);
    border-radius: 22px;
    background: #fff;
}
.zapi-builder-video {
    width: 100%;
    border-radius: 16px;
    background: #000;
}
.zapi-builder-video-pending {
    padding: 16px;
    border-radius: 12px;
    background: #fff8e5;
    color: #7a5b00;
    border: 1px solid #f0d98c;
}
.zapi-builder-template-premium-story .zapi-builder-section-hero {
    background: #0f172a;
    color: #fff;
}
.zapi-builder-template-premium-story .zapi-builder-section-hero h2,
.zapi-builder-template-premium-story .zapi-builder-section-hero p {
    color: #fff;
}
.zapi-builder-template-premium-story .zapi-builder-card {
    border-radius: 28px;
}
.zapi-builder-template-technical-grid .zapi-builder-card-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}
.zapi-builder-ratio-wide .zapi-builder-card img,
.zapi-builder-ratio-wide .zapi-builder-media img,
.zapi-builder-ratio-wide .zapi-builder-hero-media img {
    aspect-ratio: 16 / 9;
    object-fit: cover;
}
.zapi-builder-ratio-square .zapi-builder-card img,
.zapi-builder-ratio-square .zapi-builder-media img,
.zapi-builder-ratio-square .zapi-builder-hero-media img {
    aspect-ratio: 1 / 1;
    object-fit: cover;
}
@media (max-width: 900px) {
    .zapi-builder-hero-inner,
    .zapi-builder-split-inner,
    .zapi-builder-card-grid,
    .zapi-builder-template-technical-grid .zapi-builder-card-grid {
        grid-template-columns: 1fr;
    }
    .zapi-builder-layout-media-right .zapi-builder-media,
    .zapi-builder-layout-media-right .zapi-builder-copy {
        order: initial;
    }
    .zapi-builder-section-hero {
        padding: 24px;
        border-radius: 20px;
    }
    .zapi-builder-nav {
        position: static;
        border-radius: 16px;
    }
}

/* v1.4.3-R4: high-fidelity Amazon Product description image stack. */
.zapi-builder-static-html {
    margin-top: 0;
    margin-bottom: 0;
}
.zapi-builder-section-image.zapi-builder-layout-amazon-image {
    margin: 0;
    padding: 0;
    border: 0;
    overflow: visible;
}
.zapi-builder-section-image.zapi-builder-layout-amazon-image + .zapi-builder-section-image.zapi-builder-layout-amazon-image {
    margin-top: 0;
}
.zapi-builder-section-image.zapi-builder-layout-amazon-image .zapi-builder-image-stack {
    display: block;
    gap: 0;
}
.zapi-builder-section-image.zapi-builder-layout-amazon-image img,
.zapi-builder-static-html .zapi-builder-full-img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 0;
    margin: 0 auto;
    box-shadow: none;
}