:root {
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #0f3460;
    --color-highlight: #e94560;
    --color-text: #2d2d2d;
    --color-text-light: #6b7280;
    --color-text-muted: #9ca3af;
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-bg-card: #ffffff;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --font-display: 'Inter', 'Helvetica Neue', Arial, sans-serif;
    --font-body: 'Inter', 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-highlight);
}

img {
    max-width: 100%;
    height: auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    padding: 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 32px;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.site-logo:hover {
    color: var(--color-primary);
}

.main-navigation .nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.main-navigation .nav-menu a {
    display: block;
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    letter-spacing: 0.01em;
}

.main-navigation .nav-menu a:hover,
.main-navigation .nav-menu .current-menu-item a {
    color: var(--color-accent);
    background: var(--color-bg-alt);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-actions a {
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    gap: 4px;
    position: relative;
}

.header-actions a:hover {
    color: var(--color-accent);
}

.inquiry-basket .basket-count {
    position: absolute;
    top: -6px;
    right: -8px;
    background: var(--color-highlight);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.02em;
}

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

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

.btn-outline {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.btn-outline:hover {
    background: var(--color-accent);
    color: #fff;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8125rem;
}

.hero {
    padding: 100px 0 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: #fff;
    text-align: center;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: 3.25rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.85;
    max-width: 600px;
    margin: 0 auto 36px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

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

.hero .btn-primary:hover {
    background: var(--color-highlight);
    border-color: var(--color-highlight);
    color: #fff;
}

.hero .btn-outline {
    color: #fff;
    border-color: rgba(255,255,255,0.4);
}

.hero .btn-outline:hover {
    background: rgba(255,255,255,0.15);
    border-color: #fff;
    color: #fff;
}

.new-products,
.recommended-products,
.exhibitions {
    padding: 80px 0;
}

.new-products {
    background: var(--color-bg);
}

.recommended-products {
    background: var(--color-bg-alt);
}

.exhibitions {
    background: var(--color-bg);
}

.new-products h2,
.recommended-products h2,
.exhibitions h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 40px;
    color: var(--color-primary);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.product-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition);
}

.product-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--color-border);
}

.product-card-link {
    display: block;
    color: inherit;
}

.product-card-link:hover {
    color: inherit;
}

.product-card-image {
    position: relative;
    aspect-ratio: 1;
    background: var(--color-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.product-card:hover .product-card-image img {
    transform: scale(1.05);
}

.placeholder-image {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

.badge {
    display: inline-block;
    padding: 3px 10px;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-radius: 4px;
}

.badge-new {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--color-highlight);
    color: #fff;
}

.product-card-body {
    padding: 16px;
}

.product-sku {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.product-name {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-price {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-accent);
}

.product-price.member-only {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-muted);
    font-style: italic;
}

.product-size {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: 4px;
}

.archive-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    padding: 40px 0;
}

.archive-header h1 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-primary);
}

.archive-meta {
    margin-top: 8px;
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.advanced-search {
    position: sticky;
    top: 96px;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.advanced-search h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--color-primary);
}

.search-field {
    margin-bottom: 16px;
}

.search-field label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.search-field input[type="text"],
.search-field input[type="number"],
.search-field select {
    width: 100%;
    padding: 8px 12px;
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    transition: border-color var(--transition);
}

.search-field input:focus,
.search-field select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(15,52,96,0.1);
}

.search-fieldset {
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-bottom: 16px;
}

.search-fieldset legend {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text);
    padding: 0 8px;
}

.size-range {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.size-field {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.size-field label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-light);
    min-width: 50px;
}

.size-field input {
    width: 70px;
    padding: 6px 8px;
    font-size: 0.8125rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    text-align: center;
}

.size-field input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.range-sep {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

.search-actions {
    display: flex;
    gap: 8px;
    margin-top: 20px;
}

.search-actions .btn {
    flex: 1;
}

.breadcrumb {
    padding: 16px 0;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.breadcrumb a {
    color: var(--color-text-light);
}

.breadcrumb .separator {
    margin: 0 8px;
    color: var(--color-border);
}

.breadcrumb .current {
    color: var(--color-text);
    font-weight: 500;
}

.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    padding: 32px 0;
}

.product-gallery {
    position: sticky;
    top: 96px;
}

.product-main-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-bg-alt);
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.product-info {
    padding: 16px 0;
}

.product-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.product-info .product-sku {
    font-size: 0.875rem;
    margin-bottom: 24px;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table td {
    padding: 10px 0;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--color-border-light);
}

.specs-table td:first-child {
    font-weight: 600;
    color: var(--color-text-light);
    width: 40%;
}

.product-actions {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border-light);
}

.add-to-inquiry {
    min-width: 200px;
}

.login-prompt {
    font-size: 0.9375rem;
    color: var(--color-text-light);
}

.login-prompt a {
    font-weight: 600;
}

.exhibition-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.exhibition-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    padding: 28px;
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.exhibition-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-border);
}

.exhibition-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.exhibition-date,
.exhibition-location,
.exhibition-booth {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.site-footer {
    background: var(--color-primary);
    color: rgba(255,255,255,0.8);
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-col h4 {
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

.footer-col p {
    font-size: 0.875rem;
    line-height: 1.7;
}

.footer-menu {
    list-style: none;
}

.footer-menu li {
    margin-bottom: 8px;
}

.footer-menu a {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.65);
    transition: color var(--transition);
}

.footer-menu a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    text-align: center;
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.4);
}

.pagination {
    display: flex;
    gap: 8px;
    justify-content: center;
    padding: 32px 0;
}

.pagination .page-numbers {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    transition: all var(--transition);
}

.pagination .page-numbers:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.pagination .page-numbers.current {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
}

.no-results {
    text-align: center;
    padding: 60px 0;
    color: var(--color-text-muted);
    font-size: 1.125rem;
}

.404-page {
    text-align: center;
    padding: 120px 0;
}

.404-page h1 {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.page-content {
    padding: 60px 0;
}

.page-content h1 {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 24px;
}

@media (max-width: 1024px) {
    .archive-layout {
        grid-template-columns: 1fr;
    }
    .advanced-search {
        position: static;
    }
    .product-detail {
        grid-template-columns: 1fr;
    }
    .product-gallery {
        position: static;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .header-inner {
        height: 60px;
    }
    .main-navigation {
        display: none;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .hero p {
        font-size: 1rem;
    }
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 16px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}