.vof-product-detail { background: var(--bg); }

/* Breadcrumb */
.vof-product-detail__breadcrumb {
    padding: 16px 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border-light);
}

.vof-breadcrumb {
    list-style: none;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.vof-breadcrumb li {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--muted);
}

.vof-breadcrumb li a {
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
}

.vof-breadcrumb li a:hover { color: var(--accent); }
.vof-breadcrumb li[aria-current="page"] { color: var(--ink); font-weight: 500; }

/* Hero */
.vof-product-detail__hero {
    padding: 64px 0;
    background: var(--surface);
}

.vof-product-detail__hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

/* Main Image */
.vof-product-detail__main-img {
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--surface-alt);
    aspect-ratio: 1;
    position: relative;
}

.vof-product-detail__zoom-btn {
    display: block;
    width: 100%;
    height: 100%;
    background: none;
    border: none;
    padding: 0;
    cursor: zoom-in;
    position: relative;
}

.vof-product-detail__zoom-btn img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 24px;
    transition: transform 0.4s ease;
    display: block;
}

.vof-product-detail__zoom-btn:hover img {
    transform: scale(1.04);
}

.vof-product-detail__zoom-icon {
    position: absolute;
    bottom: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    background: rgba(255,255,255,0.9);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
}

.vof-product-detail__zoom-icon svg {
    width: 14px;
    height: 14px;
    stroke: var(--ink);
}

.vof-product-detail__zoom-btn:hover .vof-product-detail__zoom-icon {
    opacity: 1;
}

/* Thumbnails */
.vof-product-detail__thumbs {
    display: flex;
    gap: 10px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.vof-product-detail__thumb {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 2px solid var(--border-light);
    background: var(--surface-alt);
    cursor: pointer;
    padding: 0;
    transition: border-color 0.2s;
    flex-shrink: 0;
}

.vof-product-detail__thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 4px;
    display: block;
}

.vof-product-detail__thumb.is-active {
    border-color: var(--accent);
}

.vof-product-detail__thumb:hover {
    border-color: var(--accent);
}

/* Lightbox */
.vof-product-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s;
}

.vof-product-lightbox.is-open {
    opacity: 1;
    visibility: visible;
}

.vof-product-lightbox__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(26, 29, 35, 0.92);
    cursor: pointer;
}

.vof-product-lightbox__inner {
    position: relative;
    z-index: 1;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.vof-product-lightbox__img {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 32px 80px rgba(0,0,0,0.4);
    transform: scale(0.95);
    transition: transform 0.3s ease;
    background: var(--surface);
    padding: 16px;
}

.vof-product-lightbox.is-open .vof-product-lightbox__img {
    transform: scale(1);
}

.vof-product-lightbox__close {
    position: absolute;
    top: -44px;
    right: 0;
    width: 32px;
    height: 32px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
}

.vof-product-lightbox__close:hover {
    background: rgba(255,255,255,0.2);
}

.vof-product-lightbox__close svg {
    width: 14px;
    height: 14px;
    stroke: #fff;
}


.vof-product-detail__img-placeholder {
    aspect-ratio: 1;
    background: var(--surface-alt);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.vof-product-detail__img-placeholder span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--muted);
}

/* Info */
.vof-product-detail__cat {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-weight: 500;
    color: var(--accent);
    background: var(--accent-light);
    padding: 4px 12px;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    display: inline-block;
    margin-bottom: 16px;
}

.vof-product-detail__info h1 {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    margin-bottom: 8px;
    color: var(--ink);
}

.vof-product-detail__subtitle {
    font-size: 1rem;
    color: var(--muted);
    margin-bottom: 16px;
}

.vof-product-detail__desc {
    font-size: 0.9375rem;
    color: var(--muted);
    line-height: 1.75;
    margin-bottom: 28px;
}

/* Specs */
.vof-product-detail__specs {
    margin-bottom: 28px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.vof-product-detail__specs table {
    width: 100%;
    border-collapse: collapse;
}

.vof-product-detail__specs tr {
    border-bottom: 1px solid var(--border-light);
}

.vof-product-detail__specs tr:last-child {
    border-bottom: none;
}

.vof-product-detail__specs tr:nth-child(even) {
    background: var(--surface-alt);
}

.vof-product-detail__spec-label {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 12px 16px;
    width: 40%;
}

.vof-product-detail__spec-value {
    font-size: 0.9375rem;
    color: var(--ink);
    font-weight: 500;
    padding: 12px 16px;
}

/* ODM Tags */
.vof-product-detail__odm {
    margin-bottom: 32px;
}

.vof-product-detail__odm-label {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-weight: 500;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
    margin-bottom: 10px;
}

.vof-product-detail__odm-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.vof-product-detail__odm-tag {
    font-size: 0.8125rem;
    color: var(--ink-light);
    background: var(--surface-alt);
    border: 1px solid var(--border-light);
    padding: 6px 14px;
    border-radius: 100px;
}

/* Buttons */
.vof-product-detail__btns {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* SEO */
.vof-product-detail__seo {
    padding: 80px 0;
    background: var(--bg);
}

.vof-product-detail__seo-block {
    max-width: 860px;
    margin: 0 auto 64px;
    padding-bottom: 64px;
    border-bottom: 1px solid var(--border-light);
}

.vof-product-detail__seo-block:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.vof-product-detail__seo-block h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--ink);
}

.vof-product-detail__seo-inner--has-img {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.vof-product-detail__seo-content p {
    font-size: 0.9375rem;
    color: var(--ink-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

.vof-product-detail__seo-content ul {
    padding-left: 20px;
    list-style: disc;
    margin-bottom: 16px;
}

.vof-product-detail__seo-content li {
    font-size: 0.9375rem;
    color: var(--ink-light);
    line-height: 1.75;
    margin-bottom: 8px;
}

.vof-product-detail__seo-img img {
    width: 100%;
    border-radius: var(--radius-lg);
    object-fit: contain;
}
/* FAQ */
.vof-product-detail__faq {
    padding: 80px 0;
    background: var(--surface);
}

.vof-product-detail__faq h2 {
    text-align: center;
    margin-bottom: 48px;
}

.vof-product-detail__faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.vof-product-detail__faq-item {
    border-bottom: 1px solid var(--border);
}

.vof-product-detail__faq-item:first-child {
    border-top: 1px solid var(--border);
}

.vof-product-detail__faq-q {
    width: 100%;
    background: none;
    border: none;
    padding: 22px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.0625rem;
    color: var(--ink);
    text-align: left;
    transition: color 0.2s;
}

.vof-product-detail__faq-q:hover { color: var(--accent); }
.vof-product-detail__faq-q.is-open { color: var(--accent); }

.vof-product-detail__faq-icon {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    color: var(--muted);
    flex-shrink: 0;
    transition: transform 0.3s, color 0.2s;
    display: inline-block;
    line-height: 1;
}

.vof-product-detail__faq-q.is-open .vof-product-detail__faq-icon {
    color: var(--accent);
    transform: rotate(45deg);
}

.vof-product-detail__faq-a {
    padding-bottom: 20px;
}

.vof-product-detail__faq-a p {
    font-size: 0.9375rem;
    color: var(--muted);
    line-height: 1.75;
    max-width: 680px;
}

/* CTA */
.vof-product-detail__cta {
    padding: 80px 0 120px;
    background: var(--bg);
}

.vof-product-detail__cta-inner {
    background: var(--ink);
    border-radius: var(--radius-xl);
    padding: 80px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.vof-product-detail__cta-inner::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0, 87, 255, 0.12) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 87, 255, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.vof-product-detail__cta-content {
    position: relative;
    z-index: 1;
    max-width: 560px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.vof-product-detail__cta-content .label-caps {
    color: rgba(255,255,255,0.4);
}

.vof-product-detail__cta-content h2 {
    color: #fff;
    margin-bottom: 16px;
}

.vof-product-detail__cta-content p {
    color: rgba(255,255,255,0.5);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 32px;
}

.vof-product-detail__cta-content .btn-primary {
    background: #fff;
    color: var(--ink);
}

.vof-product-detail__cta-content .btn-primary:hover {
    background: #f0f0f0;
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 1024px) {
    .vof-product-detail__hero-grid { gap: 48px; }
    .vof-product-detail__seo-inner--has-img { gap: 32px; }
}

@media (max-width: 768px) {
    .vof-product-detail__hero { padding: 40px 0; }
    .vof-product-detail__hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .vof-product-detail__info h1 { font-size: 1.75rem; }
    .vof-product-detail__btns { flex-direction: column; }
    .vof-product-detail__btns .btn-primary,
    .vof-product-detail__btns .btn-secondary { text-align: center; }
    .vof-product-detail__seo { padding: 56px 0; }
    .vof-product-detail__seo-inner--has-img { grid-template-columns: 1fr; }
    .vof-product-detail__faq { padding: 56px 0; }
    .vof-product-detail__cta { padding: 56px 0 80px; }
    .vof-product-detail__cta-inner { padding: 56px 24px; border-radius: var(--radius-lg); }
}
/* ========================================
   Related Products
   ======================================== */
.vof-product-related {
    padding: 80px 0;
    background: var(--surface);
    border-top: 1px solid var(--border-light);
}

.vof-product-related h2 {
    margin-bottom: 40px;
}

.vof-product-related__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.vof-product-related__card {
    background: var(--bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

.vof-product-related__card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.06);
}

.vof-product-related__img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--surface-alt);
}

.vof-product-related__img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 12px;
    transition: transform 0.4s ease;
}


.vof-product-related__card:hover .vof-product-related__img img {
    transform: scale(1.04);
}

.vof-product-related__placeholder {
    width: 100%;
    height: 100%;
    background: var(--surface-alt);
}

.vof-product-related__body {
    padding: 20px 20px 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.vof-product-related__cat {
    font-family: var(--font-mono);
    font-size: 0.5625rem;
    font-weight: 500;
    color: var(--accent);
    background: var(--accent-light);
    padding: 3px 10px;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    display: inline-block;
    margin-bottom: 10px;
    width: fit-content;
}

.vof-product-related__body h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--ink);
    line-height: 1.3;
}

.vof-product-related__body h3 a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}

.vof-product-related__body h3 a:hover { color: var(--accent); }

.vof-product-related__body p {
    font-size: 0.875rem;
    color: var(--muted);
    line-height: 1.6;
    margin-bottom: 12px;
    flex: 1;
}

.vof-product-related__specs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}

.vof-product-related__spec {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-weight: 500;
    color: var(--ink-light);
    background: var(--surface);
    border: 1px solid var(--border-light);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
}

.vof-product-related__link {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--accent);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: auto;
    transition: gap 0.2s;
}

.vof-product-related__link:hover { gap: 8px; }

@media (max-width: 1024px) {
    .vof-product-related__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .vof-product-related { padding: 56px 0; }
    .vof-product-related__grid { grid-template-columns: 1fr; }
}

.vof-product-detail__seo-zoom {
    display: block;
    width: 100%;
    position: relative;
    cursor: zoom-in;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.vof-product-detail__seo-zoom img {
    width: 100%;
    display: block;
    border-radius: var(--radius-lg);
    transition: transform 0.4s ease;
}

.vof-product-detail__seo-zoom:hover img {
    transform: scale(1.02);
}

.vof-product-detail__seo-zoom:hover .vof-product-detail__zoom-icon {
    opacity: 1;
}