:root {
    --bg: #f5f7fb;
    --text: #1d1d1f;
    --muted: #6b7280;
    --brand: #00aaff;
    --accent: #ff8c00;
    --border: #e2e8f0;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.35;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: min(1200px, 92vw);
    margin: 0 auto;
}

.site-header {
    background: #fff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.site-header .container {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
}

.logo {
    font-weight: 700;
    font-size: 1.2rem;
}

.search-form {
    flex: 1;
    display: flex;
    gap: 0.5rem;
}

.search-form input {
    flex: 1;
    padding: 0.6rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.search-form button {
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    background: var(--brand);
    color: #fff;
    cursor: pointer;
}

.content {
    padding: 1.5rem 0 3rem;
}

.hero {
    background: linear-gradient(120deg, #00aaff 0%, #7dd3fc 100%);
    color: #fff;
    padding: 1.5rem;
    border-radius: 16px;
    width: min(1200px, 92vw);
    margin: 0 auto 1rem;
}

.hero-compact h1 {
    margin: 0 0 0.4rem;
    font-size: 1.6rem;
}

.hero-compact p {
    margin: 0 0 0.6rem;
    font-size: 0.95rem;
    line-height: 1.3;
}

.hero-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.4rem;
}

.hero-header h1 {
    margin: 0;
    flex: 1;
}

.hero .btn {
    margin-top: 1.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.7rem 1.6rem;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    font-weight: 600;
}

.btn.primary {
    background: #fff;
    color: var(--text);
}

.section {
    width: min(1200px, 92vw);
    margin: 0 auto 2rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 0.75rem;
}

.category-row {
    overflow-x: auto;
    padding-bottom: 0.2rem;
}

.category-list {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.3rem;
}

.category-list.horizontal .category-pill {
    flex: 0 0 auto;
}

.category-pill {
    background: #fff;
    border-radius: 24px;
    border: 1px solid var(--border);
    padding: 0.25rem 0.35rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    min-height: 38px;
}

.pill-icon {
    font-size: 1rem;
}

.pill-body {
    display: flex;
    flex-direction: column;
    gap: 0.08rem;
    min-width: 0;
}

.pill-title {
    font-weight: 600;
    font-size: 0.85rem;
}

.pill-sub {
    font-size: 0.7rem;
    color: var(--muted);
}

.product-grid {
    display: grid;
    gap: 0.9rem;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
}

.product-card {
    background: #fff;
    border-radius: 14px;
    border: 1px solid var(--border);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.product-thumb {
    position: relative;
    display: block;
    background: #f1f5f9;
    border-bottom: 1px solid var(--border);
    aspect-ratio: 4 / 3;
}

.product-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-body {
    padding: 0.65rem 0.75rem 0.8rem;
}

.product-card h3 {
    margin: 0 0 0.35rem;
    font-size: 1rem;
    line-height: 1.2;
    min-height: 2.4em;
}

.product-card h3 a {
    color: inherit;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.price-row {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.1;
}

.catalog-layout {
    width: min(1200px, 92vw);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 1.5rem;
}

.filters {
    background: #fff;
    border-radius: 16px;
    padding: 1.2rem;
    border: 1px solid var(--border);
}

.filters form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.filters input,
.filters select {
    width: 100%;
    padding: 0.45rem 0.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.catalog-results .product-grid {
    margin-top: 1rem;
}

.product-detail {
    width: min(1000px, 92vw);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.breadcrumbs {
    font-size: 0.82rem;
    color: var(--muted);
    display: flex;
    gap: 0.35rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.breadcrumbs a {
    color: inherit;
}

.product-title {
    margin: 0;
    font-size: 1.4rem;
    line-height: 1.2;
}

.gallery {
    background: #fff;
    border-radius: 16px;
    border: 1px solid var(--border);
    padding: 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.gallery-main img {
    width: 100%;
    max-height: 420px;
    object-fit: contain;
    border-radius: 12px;
}

.gallery-thumbs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 0.45rem;
}

.thumb-btn {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0;
    background: #fff;
    cursor: pointer;
    overflow: hidden;
}

.thumb-btn img {
    width: 100%;
    height: 78px;
    object-fit: cover;
    display: block;
}

.purchase-row {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: nowrap;
}

.price-stack {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.purchase-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.price-block {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 1rem 0;
}

.price {
    font-size: 2rem;
    font-weight: 700;
}

.btn.outline {
    background: transparent;
    color: var(--brand);
    border: 1px solid var(--brand);
    padding: 0.65rem 1.2rem;
}

.action-card form {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.action-card input,
.action-card textarea {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--border);
    border-radius: 10px;
}

.product-description,
.product-attributes {
    background: #fff;
    border-radius: 16px;
    border: 1px solid var(--border);
    overflow: hidden;
}

.product-description {
    padding: 1rem;
}

.product-attributes {
    padding: 0;
}

.attribute-panel {
    border: none;
    margin: 0;
}

.attribute-panel summary {
    padding: 0.85rem 1rem;
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    gap: 0.4rem;
    cursor: pointer;
    list-style: none;
}

.attribute-panel summary::-webkit-details-marker {
    display: none;
}

.attribute-summary-line {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.attribute-summary-line h2 {
    margin: 0;
    font-size: 1.05rem;
}

.attribute-summary-meta {
    display: flex;
    gap: 0.6rem;
    align-items: center;
    font-size: 0.88rem;
    flex-wrap: wrap;
}

.attribute-toggle-control {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.attribute-count {
    font-size: 0.85rem;
    color: var(--muted);
}

.attribute-toggle-icon {
    width: 0.75rem;
    height: 0.75rem;
    border-right: 2px solid var(--brand);
    border-bottom: 2px solid var(--brand);
    transform: rotate(45deg);
    transition: transform 0.2s ease;
}

.attribute-panel[open] .attribute-toggle-icon {
    transform: rotate(-135deg);
}

.attribute-toggle-text {
    color: var(--brand);
    font-weight: 600;
    letter-spacing: 0.01em;
}

.attribute-toggle-text:hover {
    text-decoration: underline;
}

.attribute-body {
    padding: 0 1rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.attribute-group {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.55rem 0.8rem 0.65rem;
    background: #f8fafc;
}

.attribute-group-title {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--muted);
    margin-bottom: 0.3rem;
}

.attribute-list {
    display: grid;
    grid-template-columns: minmax(150px, 1fr) minmax(120px, 1.2fr);
    gap: 0.15rem 0.6rem;
    margin: 0;
}

.attribute-list dt {
    font-weight: 500;
    font-size: 0.88rem;
    margin: 0;
}

.attribute-list dd {
    margin: 0;
    color: var(--muted);
    font-size: 0.88rem;
}

.html-body p {
    margin: 0 0 0.6rem;
}

.site-footer {
    padding: 1.5rem 0;
    border-top: 1px solid var(--border);
    color: var(--muted);
    background: #fff;
}

.miniapp-placeholder {
    width: min(800px, 92vw);
    margin: 2rem auto;
}

.miniapp-card {
    background: #fff;
    border-radius: 16px;
    border: 1px solid var(--border);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.miniapp-card code {
    background: #f1f5f9;
    padding: 0.1rem 0.4rem;
    border-radius: 6px;
    font-size: 0.9rem;
}

.miniapp-note {
    font-size: 0.85rem;
    color: var(--muted);
}

@media (max-width: 960px) {
    .catalog-layout {
        grid-template-columns: 1fr;
    }
    .site-header .container {
        flex-direction: column;
        align-items: stretch;
    }
    .search-form {
        width: 100%;
    }
}

@media (max-width: 640px) {
    .site-header .logo {
        display: none;
    }
    .hero-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .hero-header .btn {
        width: 100%;
        justify-content: center;
    }
    .purchase-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.6rem;
    }
    .purchase-buttons {
        width: 100%;
        flex-wrap: wrap;
    }
    .purchase-buttons .btn {
        flex: 1;
        min-width: 48%;
        justify-content: center;
    }
    .product-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.75rem;
    }
    .product-thumb {
        aspect-ratio: 1 / 1;
    }
    .product-card h3 {
        font-size: 0.92rem;
    }
    .hero {
        padding: 1.4rem;
    }
    .gallery-thumbs {
        grid-template-columns: repeat(auto-fit, minmax(68px, 1fr));
    }
    .attribute-list {
        grid-template-columns: 1fr;
    }
    .attribute-panel summary {
        padding: 0.75rem 0.85rem;
    }
    .attribute-body {
        padding: 0 0.85rem 0.85rem;
    }
    .attribute-summary-line {
        flex-direction: column;
        align-items: flex-start;
    }
    .attribute-summary-meta {
        width: 100%;
        justify-content: space-between;
    }
}