/* 青春活力的产品列表样式 */
:root {
    --youth-primary: #6366f1;
    --youth-secondary: #8b5cf6;
    --youth-accent: #06b6d4;
    --youth-success: #10b981;
    --youth-warning: #f59e0b;
    --youth-danger: #ef4444;
    --youth-dark: #1e293b;
    --youth-light: #f8fafc;
    --youth-gradient: linear-gradient(135deg, var(--youth-primary), var(--youth-secondary));
    --youth-glow: 0 0 30px rgba(99, 102, 241, 0.3);
}

/* Hero Section - 年轻活力风格 */
.products-hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    position: relative;
    overflow: hidden;
    padding: 4rem 0 6rem;
    margin-bottom: 3rem;
}

.products-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { opacity: 0.8; }
    100% { opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 2;
    color: white;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #fbbf24;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff 0%, #fbbf24 50%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    color: #cbd5e1;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.hero-metrics {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.metric-item {
    text-align: center;
    color: white;
}

.metric-number {
    display: block;
    font-size: 2rem;
    font-weight: 900;
    background: var(--youth-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.metric-label {
    font-size: 0.875rem;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.metric-divider {
    width: 1px;
    height: 3rem;
    background: rgba(255, 255, 255, 0.2);
}

/* 面包屑导航 - 年轻化设计 */
.hero-breadcrumb {
    margin-bottom: 2rem;
}

.breadcrumb {
    background: none;
    padding: 0;
    margin: 0;
    justify-content: center;
}

.breadcrumb-item {
    font-size: 0.875rem;
}

.breadcrumb-link {
    color: #94a3b8;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.breadcrumb-link:hover {
    color: #fbbf24;
    transform: translateY(-1px);
}

.breadcrumb-item.active {
    color: #fbbf24;
    font-weight: 600;
}

/* Wave divider */
.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}

.hero-wave svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 60px;
}

.hero-wave path {
    fill: var(--youth-light);
}

/* 优化的筛选系统 - 更整洁的布局 */
.filter-system {
    background: white;
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.1);
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.filter-system::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--youth-gradient);
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.filter-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--youth-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.filter-title i {
    color: var(--youth-primary);
    font-size: 1.125rem;
}

.filter-toggle {
    background: var(--youth-gradient);
    color: white;
    border: none;
    border-radius: 25px;
    padding: 0.5rem 1rem;
    font-weight: 600;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    transition: all 0.3s ease;
}

.filter-toggle:hover {
    transform: translateY(-1px);
    box-shadow: var(--youth-glow);
}

/* 三列布局的筛选内容 */
.filter-content .filter-content-inner {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

.filter-group {
    display: flex;
    flex-direction: column;
}

.filter-label {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-weight: 600;
    color: var(--youth-dark);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.filter-label i {
    color: var(--youth-accent);
    font-size: 1rem;
}

/* 国家分类网格 - 更紧凑的两列布局 */
.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    max-height: 300px;
    overflow-y: auto;
    padding: 0.5rem;
}

.category-grid::-webkit-scrollbar {
    width: 4px;
}

.category-grid::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 2px;
}

.category-grid::-webkit-scrollbar-thumb {
    background: var(--youth-gradient);
    border-radius: 2px;
}

.category-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: #f8fafc;
    border: 2px solid transparent;
    border-radius: 12px;
    text-decoration: none;
    color: var(--youth-dark);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    
}

.category-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--youth-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.category-item:hover::before,
.category-item.active::before {
    opacity: 0.1;
}

.category-item:hover,
.category-item.active {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.12);
    border-color: var(--youth-primary);
    color: var(--youth-primary);
    text-decoration: none;
}

.category-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.category-item:hover .category-icon {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.15);
}

.country-flag {
    width: 20px;
    height: 15px;
    object-fit: cover;
    border-radius: 2px;
}

.flag-fallback,
.country-flag-default {
    color: var(--youth-accent);
    font-size: 0.875rem;
}

.all-countries {
    background: var(--youth-gradient);
    color: white;
    border-radius: 50%;
}

.category-name {
    font-weight: 600;
    font-size: 0.75rem;
    line-height: 1.2;
    flex: 1;
}

/* 搜索表单 - 垂直布局 */
.search-form {
    width: 100%;
}

.search-container {
    position: relative;
    width: 100%;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    border: 2px solid #e2e8f0;
    border-radius: 25px;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    background: white;
}

.search-input:focus {
    outline: none;
    border-color: var(--youth-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-btn {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--youth-primary);
    font-size: 1rem;
    padding: 0.375rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.search-btn:hover {
    background: var(--youth-gradient);
    color: white;
    transform: translateY(-50%) scale(1.05);
}

/* 字母筛选网格 - 垂直紧凑布局 */
.alphabet-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    max-height: 200px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.alphabet-grid::-webkit-scrollbar {
    width: 4px;
}

.alphabet-grid::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 2px;
}

.alphabet-grid::-webkit-scrollbar-thumb {
    background: var(--youth-gradient);
    border-radius: 2px;
}

.alphabet-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 36px;
    border-radius: 8px;
    background: #f8fafc;
    color: var(--youth-dark);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.875rem;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.alphabet-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--youth-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.alphabet-btn:hover::before,
.alphabet-btn.active::before {
    opacity: 1;
}

.alphabet-btn:hover,
.alphabet-btn.active {
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
    text-decoration: none;
    border-color: transparent;
}

.all-btn {
    grid-column: span 4;
    font-size: 0.75rem;
}

/* 移动端侧边筛选 */
.mobile-filter-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-filter-overlay.show {
    opacity: 1;
    visibility: visible;
}

.mobile-filter-sidebar {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    height: 100%;
    background: white;
    z-index: 1050;
    transition: right 0.3s ease;
    overflow-y: auto;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
}

.mobile-filter-sidebar.show {
    right: 0;
}

.mobile-filter-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    background: var(--youth-gradient);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-filter-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.mobile-filter-close:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.1);
}

.mobile-filter-content {
    padding: 1.5rem;
}

.mobile-filter-content .filter-group {
    margin-bottom: 2rem;
}

.mobile-filter-content .category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 两列 */
    grid-template-rows: repeat(2, auto);   /* 两行 */
    gap: 10px; /* 行列间距 */
}

.mobile-filter-content .alphabet-grid {
    grid-template-columns: repeat(6, 1fr);
    max-height: none;
}

.mobile-filter-toggle {
    position: fixed;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--youth-gradient);
    color: white;
    border: none;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
    z-index: 1030;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all 0.3s ease;
}

.mobile-filter-toggle:hover {
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.4);
}

.mobile-filter-toggle.show {
    display: flex;
}

/* 结果区域样式保持不变 */
.results-section {
    margin-bottom: 3rem;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.results-info h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--youth-dark);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.results-info i {
    color: var(--youth-primary);
}

.search-term,
.filter-term {
    color: var(--youth-primary);
    background: rgba(99, 102, 241, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 8px;
}

.results-count {
    color: #64748b;
    font-size: 1rem;
    margin: 0;
}

.count-highlight,
.total-highlight {
    font-weight: 700;
    color: var(--youth-primary);
}

.results-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.view-options {
    display: flex;
    background: #f1f5f9;
    border-radius: 12px;
    padding: 4px;
}

.view-btn {
    background: none;
    border: none;
    padding: 0.75rem;
    border-radius: 8px;
    color: #64748b;
    transition: all 0.3s ease;
    cursor: pointer;
}

.view-btn.active,
.view-btn:hover {
    background: var(--youth-gradient);
    color: white;
    transform: scale(1.05);
}

.sort-select {
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    background: white;
    color: var(--youth-dark);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.sort-select:focus {
    outline: none;
    border-color: var(--youth-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* 活动筛选标签 */
.active-filters {
    background: #f8fafc;
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid #e2e8f0;
}

.filters-label {
    font-weight: 600;
    color: var(--youth-dark);
    margin-bottom: 1rem;
    display: block;
}

.filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.filter-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--youth-gradient);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
}

.remove-filter {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.remove-filter:hover {
    background: rgba(255, 255, 255, 0.3);
    color: white;
    transform: scale(1.1);
}

.clear-all-filters {
    background: #ef4444;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.clear-all-filters:hover {
    background: #dc2626;
    color: white;
    transform: translateY(-1px);
    text-decoration: none;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .filter-content {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }
    
    .filter-group:first-child {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .products-hero {
        padding: 3rem 0 4rem;
        margin-bottom: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-metrics {
        gap: 1rem;
    }
    
    .metric-divider {
        display: none;
    }
    
    .filter-system {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .filter-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .filter-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .results-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .results-actions {
        flex-direction: column;
        gap: 1rem;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
        max-height: 150px;
    }
    
    .alphabet-grid {
        grid-template-columns: repeat(6, 1fr);
        max-height: 150px;
    }
    
    /* 显示移动端筛选按钮 */
    .mobile-filter-toggle.show {
        display: flex;
    }
    
    /* 隐藏桌面版筛选 */
    .filter-system {
        display: none;
    }
}

@media (max-width: 576px) {
    .hero-description {
        font-size: 1.125rem;
    }
    
    .metric-number {
        font-size: 1.5rem;
    }
    
    .mobile-filter-sidebar {
        width: 100%;
        right: -100%;
    }
    
    .mobile-filter-sidebar.show {
        right: 0;
    }
}


/* Wave divider ---------------*/


/* 国家分类网格 - 更紧凑 */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 0.75rem;
}

.category-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 0.75rem;
    background: #f8fafc;
    border: 2px solid transparent;
    border-radius: 12px;
    text-decoration: none;
    color: var(--youth-dark);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-height: 80px;
}

.category-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--youth-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.category-item:hover::before,
.category-item.active::before {
    opacity: 0.1;
}

.category-item:hover,
.category-item.active {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.12);
    border-color: var(--youth-primary);
    color: var(--youth-primary);
    text-decoration: none;
}

.category-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.category-item:hover .category-icon {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.15);
}

.country-flag {
    width: 24px;
    height: 18px;
    object-fit: cover;
    border-radius: 3px;
}

.flag-fallback,
.country-flag-default {
    color: var(--youth-accent);
    font-size: 1rem;
}

.all-countries {
    background: var(--youth-gradient);
    color: white;
    border-radius: 50%;
}

.category-name {
    font-weight: 600;
    font-size: 0.75rem;
    text-align: center;
    line-height: 1.2;
}

/* 搜索表单 - 更紧凑 */
.search-form {
    width: 100%;
}

.search-container {
    position: relative;
    max-width: 350px;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    border: 2px solid #e2e8f0;
    border-radius: 25px;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    background: white;
}

.search-input:focus {
    outline: none;
    border-color: var(--youth-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-btn {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--youth-primary);
    font-size: 1rem;
    padding: 0.375rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.search-btn:hover {
    background: var(--youth-gradient);
    color: white;
    transform: translateY(-50%) scale(1.05);
}

/* 字母筛选网格 - 更紧凑 */
.alphabet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
    gap: 0.5rem;
}

.alphabet-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: #f8fafc;
    color: var(--youth-dark);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.875rem;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.alphabet-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--youth-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.alphabet-btn:hover::before,
.alphabet-btn.active::before {
    opacity: 1;
}

.alphabet-btn:hover,
.alphabet-btn.active {
    color: white;
    transform: translateY(-1px) scale(1.05);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
    text-decoration: none;
    border-color: transparent;
}

.all-btn {
    grid-column: span 2;
    width: auto;
    min-width: 60px;
    font-size: 0.75rem;
}

/* 结果区域 */
.results-section {
    margin-bottom: 3rem;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.results-info h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--youth-dark);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.results-info i {
    color: var(--youth-primary);
}

.search-term,
.filter-term {
    color: var(--youth-primary);
    background: rgba(99, 102, 241, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 8px;
}

.results-count {
    color: #64748b;
    font-size: 1rem;
    margin: 0;
}

.count-highlight,
.total-highlight {
    font-weight: 700;
    color: var(--youth-primary);
}

.results-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.view-options {
    display: flex;
    background: #f1f5f9;
    border-radius: 12px;
    padding: 4px;
}

.view-btn {
    background: none;
    border: none;
    padding: 0.75rem;
    border-radius: 8px;
    color: #64748b;
    transition: all 0.3s ease;
    cursor: pointer;
}

.view-btn.active,
.view-btn:hover {
    background: var(--youth-gradient);
    color: white;
    transform: scale(1.05);
}

.sort-select {
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    background: white;
    color: var(--youth-dark);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.sort-select:focus {
    outline: none;
    border-color: var(--youth-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* 活动筛选标签 */
.active-filters {
    background: #f8fafc;
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid #e2e8f0;
}

.filters-label {
    font-weight: 600;
    color: var(--youth-dark);
    margin-bottom: 1rem;
    display: block;
}

.filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.filter-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--youth-gradient);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
}

.remove-filter {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.remove-filter:hover {
    background: rgba(255, 255, 255, 0.3);
    color: white;
    transform: scale(1.1);
}

.clear-all-filters {
    background: #ef4444;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.clear-all-filters:hover {
    background: #dc2626;
    color: white;
    transform: translateY(-1px);
    text-decoration: none;
}

.product-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: var(--youth-gradient);
    color: white;
    padding: 0.375rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    z-index: 2;
}

.product-badge.featured {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    animation: pulse 2s infinite;
}

.product-country-flag {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    width: 32px;
    height: 24px;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    z-index: 2;
}

.country-flag-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.security-indicators {
    position: absolute;
    bottom: 0.75rem;
    left: 0.75rem;
    display: flex;
    gap: 0.375rem;
    z-index: 2;
}

.security-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--youth-success);
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
    transition: all 0.3s ease;
}

.security-dot[data-feature="Holographic"] {
    background: #8b5cf6;
    box-shadow: 0 0 8px rgba(139, 92, 246, 0.5);
}

.security-dot[data-feature="RFID"] {
    background: #06b6d4;
    box-shadow: 0 0 8px rgba(6, 182, 212, 0.5);
}

.security-dot[data-feature="UV"] {
    background: #f59e0b;
    box-shadow: 0 0 8px rgba(245, 158, 11, 0.5);
}

.modern-product-card:hover .security-dot {
    transform: scale(1.2);
}

.product-actions {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    gap: 0.5rem;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 3;
}

.modern-product-card:hover .product-actions {
    opacity: 1;
}

.action-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    color: var(--youth-primary);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    text-decoration: none;
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.action-btn:hover {
    background: var(--youth-gradient);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
}

.product-content {
    padding: 1rem 1.5rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-category {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--youth-accent);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
}

.product-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--youth-dark);
    margin-bottom: 0.75rem;
    line-height: 1.3;
    flex: 1;
}

.product-title-link {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.product-title-link:hover {
    color: var(--youth-primary);
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.rating-stars {
    display: flex;
    gap: 2px;
}

.star-active {
    color: #f59e0b;
    font-size: 0.875rem;
}

.star-inactive {
    color: #d1d5db;
    font-size: 0.875rem;
}

.rating-count {
    color: #64748b;
    font-size: 0.75rem;
    font-weight: 500;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: #64748b;
    font-size: 0.75rem;
    font-weight: 500;
    background: #f8fafc;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
}

.feature-item i {
    color: var(--youth-success);
    font-size: 0.875rem;
}

.product-pricing {
    margin-bottom: 1rem;
}

.price-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.price-current {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--youth-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-original {
    font-size: 1rem;
    color: #94a3b8;
    text-decoration: line-through;
    font-weight: 500;
}

.price-discount {
    background: var(--youth-success);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.price-contact {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--youth-primary);
}

.product-actions-mobile {
    display: flex;
    gap: 0.75rem;
    margin-top: auto;
}

.product-btn-detail,
.product-btn-buy {
    flex: 1;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.product-btn-detail {
    background: rgba(99, 102, 241, 0.1);
    color: var(--youth-primary);
    border-color: rgba(99, 102, 241, 0.2);
}

.product-btn-detail:hover {
    background: rgba(99, 102, 241, 0.15);
    color: var(--youth-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.product-btn-buy {
    background: var(--youth-gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.product-btn-buy:hover {
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.product-loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.loading-spinner {
    width: 40px;
    height: 40px;
}

.spinner {
    width: 100%;
    height: 100%;
    border: 3px solid rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    border-top-color: var(--youth-primary);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 无结果状态 */
.no-results {
    text-align: center;
    padding: 4rem 2rem;
    background: white;
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    margin: 3rem 0;
}

.no-results-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 3rem;
}

.no-results-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--youth-dark);
    margin-bottom: 1rem;
}

.no-results-text {
    color: #64748b;
    font-size: 1.125rem;
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.no-results-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--youth-gradient);
    color: white;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

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

.btn-outline:hover {
    background: var(--youth-gradient);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

/* 自定义请求区域 */
.custom-request-section {
    background: var(--youth-dark);
    padding: 4rem 0;
    margin: 4rem 0;
    position: relative;
    overflow: hidden;
}

.custom-request-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    z-index: 0;
}

.custom-request-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 3rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 1;
}

.request-content {
    color: white;
}

.request-icon {
    width: 80px;
    height: 80px;
    background: var(--youth-gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.request-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.request-description {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    color: #cbd5e1;
    line-height: 1.6;
}

.request-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #e2e8f0;
    font-weight: 500;
}

.feature-item i {
    color: var(--youth-success);
    font-size: 1.25rem;
}

.request-actions {
    text-align: center;
}

.btn-lg {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
    margin-bottom: 1rem;
    width: 100%;
}

.request-support {
    margin-top: 2rem;
}

.support-text {
    color: #94a3b8;
    font-size: 0.875rem;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.support-text i {
    color: var(--youth-accent);
}

/* FAQ 区域 */
.faq-section {
    padding: 4rem 0;
    background: #f8fafc;
}

.section-header {
    margin-bottom: 3rem;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--youth-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--youth-dark);
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.125rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 16px;
    margin-bottom: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.faq-question {
    padding: 1.5rem;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--youth-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    color: var(--youth-primary);
    background: rgba(99, 102, 241, 0.05);
}

.question-text {
    flex: 1;
    text-align: left;
}

.question-icon {
    font-size: 1.25rem;
    color: var(--youth-primary);
    transition: transform 0.3s ease;
}

.faq-question[aria-expanded="true"] .question-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer.show {
    max-height: 300px;
}

.answer-content {
    padding: 0 1.5rem 1.5rem;
    color: #64748b;
    line-height: 1.7;
}

.faq-support {
    margin-top: 3rem;
    padding: 2rem;
    background: white;
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.support-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--youth-dark);
    margin-bottom: 1rem;
}

.support-text {
    color: #64748b;
    margin-bottom: 2rem;
    font-size: 1.125rem;
}

.support-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 分页 */
.pagination-section {
    margin: 3rem 0;
    text-align: center;
}

.pagination-nav .pagination {
    justify-content: center;
    gap: 0.5rem;
}

.page-link {
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    background: #f8fafc;
    color: var(--youth-dark);
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
}

.page-link:hover,
.page-item.active .page-link {
    background: var(--youth-gradient);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .products-hero {
        padding: 3rem 0 4rem;
        margin-bottom: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-metrics {
        gap: 1rem;
    }
    
    .metric-divider {
        display: none;
    }
    
    .filter-system {
        padding: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .filter-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .results-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .results-actions {
        flex-direction: column;
        gap: 1rem;
    }
    
    .category-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 0.75rem;
    }
    
    .alphabet-grid {
        grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
        gap: 0.5rem;
    }
    
    .alphabet-btn {
        width: 40px;
        height: 40px;
        font-size: 0.875rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .custom-request-card {
        padding: 2rem;
    }
    
    .request-features {
        grid-template-columns: 1fr;
    }
    
    .btn-lg {
        width: 100%;
        margin-bottom: 0.75rem;
    }
    
    .support-actions {
        flex-direction: column;
    }
}

@media (max-width: 576px) {
    .hero-description {
        font-size: 1.125rem;
    }
    
    .metric-number {
        font-size: 1.5rem;
    }
    
    .filter-system {
        padding: 1rem;
    }
    
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .alphabet-grid {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .request-title {
        font-size: 1.5rem;
    }
}

/* 加载状态和动画 */
.loading-state {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading-state::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 32px;
    height: 32px;
    border: 3px solid rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    border-top-color: var(--youth-primary);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.filter-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 1rem;
}

.spin {
    animation: spin 1s linear infinite;
}

/* 页面加载完成效果 */
.page-loaded .animate__animated {
    animation-duration: 0.8s;
    animation-fill-mode: both;
}

/* Product Cards Styles - Modern Youth-Oriented Design */
/* ===================================================== */

/* 产品网格和列表视图样式 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.products-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.products-list .col {
    width: 100%;
}

.products-list .modern-product-card {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    padding: 1.5rem;
    height: auto;
    min-height: 180px;
}

.products-list .product-image-container {
    width: 220px;
    height: 140px;
    flex-shrink: 0;
    margin-right: 1.5rem;
    margin-bottom: 0;
}

.products-list .product-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 0;
}

.products-list .product-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.products-list .product-features {
    margin-bottom: 1rem;
}

.products-list .product-actions-mobile {
    margin-top: auto;
    padding-top: 1rem;
}

/* 现代产品卡片基础样式 */
.modern-product-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(226, 232, 240, 0.6);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.modern-product-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
}

.modern-product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.02), rgba(139, 92, 246, 0.02));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
    pointer-events: none;
}

.modern-product-card:hover::before {
    opacity: 1;
}

/* 产品图片容器 */
.product-image-container {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    border-radius: 16px;
    margin: 1rem 1rem 0;
    height: 200px;
    z-index: 2;
}

.product-image-wrapper {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
    border-radius: 16px;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center center;
    background-color: #f8fafc; /* 可设背景色避免透明边缘 */
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.modern-product-card:hover .product-image {
    transform: scale(1.08);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg, 
        rgba(99, 102, 241, 0.1), 
        rgba(139, 92, 246, 0.1),
        rgba(6, 182, 212, 0.05)
    );
    opacity: 0;
    transition: opacity 0.4s ease;
}

.modern-product-card:hover .image-overlay {
    opacity: 1;
}

/* 产品徽章 */
.product-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    padding: 0.375rem 0.875rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    z-index: 3;
    animation: pulse 2s infinite;
}

.product-badge.featured {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* 国家旗帜 */
.product-country-flag {
    position: absolute;
    top: 1rem;
    left: 1rem;
    width: 36px;
    height: 27px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.15);
    z-index: 3;
    border: 2px solid white;
}

.country-flag-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 安全特征指示器 */
.security-indicators {
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    display: flex;
    gap: 0.5rem;
    z-index: 3;
}

.security-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
    transition: all 0.3s ease;
    position: relative;
}

.security-dot::after {
    content: attr(data-feature);
    position: absolute;
    bottom: 120%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-size: 0.625rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
}

.security-dot:hover::after {
    opacity: 1;
    visibility: visible;
}

.security-dot[data-feature="Holographic"] {
    background: #8b5cf6;
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.5);
}

.security-dot[data-feature="RFID"] {
    background: #06b6d4;
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.5);
}

.security-dot[data-feature="UV"] {
    background: #f59e0b;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.5);
}

.modern-product-card:hover .security-dot {
    transform: scale(1.3);
}

/* 产品操作按钮 - 右侧显示 */
.product-actions {
    position: absolute;
    top: 1rem;
    right: 1rem;
    bottom: 1rem;
    width: 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.75rem;
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 4;
}

.modern-product-card:hover .product-actions {
    opacity: 1;
    transform: translateX(0);
}

.action-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    color: #6366f1;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    text-decoration: none;
    cursor: pointer;
    backdrop-filter: blur(10px);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.action-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.action-btn:hover::before {
    opacity: 1;
}

.action-btn:hover {
    color: white;
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
    border-color: rgba(255, 255, 255, 0.3);
}

.quick-view-btn:hover {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.cart-btn:hover,
.view-btn:hover {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
}

.wishlist-btn:hover {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

/* 产品内容区域 */
.product-content {
    padding: 1.25rem 1.5rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    z-index: 2;
    position: relative;
}

.product-category {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: #06b6d4;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
}

.product-category i {
    font-size: 0.875rem;
}

.product-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.75rem;
    line-height: 1.4;
    min-height: 3rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-title-link {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.product-title-link:hover {
    color: #6366f1;
}

/* 产品评级 */
.product-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.rating-stars {
    display: flex;
    gap: 2px;
}

.star-active {
    color: #f59e0b;
    font-size: 0.875rem;
}

.star-inactive {
    color: #d1d5db;
    font-size: 0.875rem;
}

.rating-count {
    color: #64748b;
    font-size: 0.75rem;
    font-weight: 500;
}

/* 产品特征 - 单行排列 */
.product-features {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: #64748b;
    font-size: 0.7rem;
    font-weight: 500;
    background: #f8fafc;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.2);
    color: #6366f1;
}

.feature-item i {
    color: #10b981;
    font-size: 0.75rem;
}

/* 产品定价 */
.product-pricing {
    margin-bottom: 1.25rem;
}

.price-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.price-current {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-original {
    font-size: 1rem;
    color: #94a3b8;
    text-decoration: line-through;
    font-weight: 500;
}

.price-discount {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.price-contact {
    font-size: 1.125rem;
    font-weight: 700;
    color: #6366f1;
}

/* 移动端操作按钮 - 分行排列 */
.product-actions-mobile {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: auto;
}

.product-btn-detail,
.product-btn-buy {
    padding: 0.875rem 1rem;
    border-radius: 14px;
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.product-btn-detail::before,
.product-btn-buy::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.product-btn-detail:hover::before,
.product-btn-buy:hover::before {
    left: 100%;
}

.product-btn-detail {
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
    border-color: rgba(99, 102, 241, 0.2);
}

.product-btn-detail:hover {
    background: rgba(99, 102, 241, 0.15);
    color: #6366f1;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
}

.product-btn-buy {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
}

.product-btn-buy:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

/* 加载状态 */
.product-loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: 20px;
}

.loading-spinner {
    width: 50px;
    height: 50px;
}

.spinner {
    width: 100%;
    height: 100%;
    border: 4px solid rgba(99, 102, 241, 0.2);
    border-radius: 50%;
    border-top-color: #6366f1;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 无结果状态 */
.no-results {
    text-align: center;
    padding: 4rem 2rem;
    background: white;
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    margin: 3rem 0;
}

.no-results-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 3rem;
}

.no-results-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.no-results-text {
    color: #64748b;
    font-size: 1.125rem;
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.no-results-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.btn-outline {
    background: transparent;
    color: #6366f1;
    border-color: #6366f1;
}

.btn-outline:hover {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

/* 分页样式 */
.pagination-section {
    margin: 3rem 0;
    text-align: center;
}

.pagination-nav .pagination {
    justify-content: center;
    gap: 0.5rem;
}

.page-link {
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    background: #f8fafc;
    color: #1e293b;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
}

.page-link:hover,
.page-item.active .page-link {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 1rem;
    }
    
    .product-image-container {
        height: 160px;
        margin: 0.75rem 0.75rem 0;
    }
    
    .product-content {
        padding: 1rem 1.25rem 1.25rem;
    }
    
    .product-actions {
        width: 45px;
        gap: 0.5rem;
    }
    
    .action-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .product-title {
        font-size: 1rem;
        min-height: 2.5rem;
    }
    
    .price-current {
        font-size: 1.25rem;
    }
    
    .products-list .modern-product-card {
        flex-direction: column;
        padding: 1rem;
    }
    
    .products-list .product-image-container {
        width: 100%;
        height: 160px;
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .products-list .product-content {
        padding: 0;
    }
}

@media (max-width: 576px) {
    .products-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .product-features {
        gap: 0.375rem;
    }
    
    .feature-item {
        font-size: 0.65rem;
        padding: 0.2rem 0.4rem;
    }
    
    .product-actions {
        position: static;
        flex-direction: row;
        justify-content: center;
        opacity: 1;
        transform: none;
        width: auto;
        margin-top: 1rem;
        gap: 0.5rem;
    }
    
    .modern-product-card:hover .product-actions {
        transform: none;
    }
    
    .action-btn {
        width: 36px;
        height: 36px;
        font-size: 0.875rem;
    }
}

/* 高级动画和微交互 */
@media (prefers-reduced-motion: no-preference) {
    .modern-product-card {
        animation: cardAppear 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
        opacity: 0;
        transform: translateY(30px);
    }
    
    .modern-product-card:nth-child(1) { animation-delay: 0.1s; }
    .modern-product-card:nth-child(2) { animation-delay: 0.2s; }
    .modern-product-card:nth-child(3) { animation-delay: 0.3s; }
    .modern-product-card:nth-child(4) { animation-delay: 0.4s; }
    .modern-product-card:nth-child(5) { animation-delay: 0.5s; }
    .modern-product-card:nth-child(6) { animation-delay: 0.6s; }
    
    @keyframes cardAppear {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .modern-product-card {
        background: #1e293b;
        border-color: rgba(71, 85, 105, 0.6);
    }
    
    .product-title {
        color: #f1f5f9;
    }
    
    .product-category {
        color: #06b6d4;
    }
    
    .feature-item {
        background: #334155;
        border-color: #475569;
        color: #cbd5e1;
    }
    
    .no-results {
        background: #1e293b;
        color: #f1f5f9;
    }
    
    .no-results-title {
        color: #f1f5f9;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .modern-product-card {
        border-width: 2px;
        border-color: #000;
    }
    
    .product-title {
        color: #000;
    }
    
    .action-btn {
        border: 2px solid #000;
    }
}

/* ===================================================== */
/* 移动端Filter System修复CSS                               */
/* ===================================================== */

/* 基础变量确保 */
:root {
    --youth-primary: #6366f1;
    --youth-secondary: #8b5cf6;
    --youth-accent: #06b6d4;
    --youth-success: #10b981;
    --youth-warning: #f59e0b;
    --youth-danger: #ef4444;
    --youth-dark: #1e293b;
    --youth-light: #f8fafc;
    --youth-gradient: linear-gradient(135deg, var(--youth-primary), var(--youth-secondary));
    --youth-glow: 0 0 30px rgba(99, 102, 241, 0.3);
    --z-overlay: 1040;
    --z-sidebar: 1050;
    --z-floating: 1030;
}

/* 移动端Filter System基础样式 */
@media (max-width: 767.98px) {
    /* 隐藏桌面端筛选内容 */
    .filter-system .filter-content {
        display: none !important;
    }
    
    /* 确保筛选系统容器在移动端显示 */
    .filter-system {
        display: block !important;
        background: white;
        border-radius: 16px;
        padding: 1rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        border: 1px solid rgba(99, 102, 241, 0.1);
        margin-bottom: 1.5rem;
        position: relative;
        overflow: visible;
    }
    
    .filter-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 0;
    }
    
    .filter-title {
        font-size: 1.125rem;
        font-weight: 700;
        color: var(--youth-dark);
        margin: 0;
    }
}

/* 移动端筛选触发按钮 */
.mobile-filter-trigger {
    background: var(--youth-gradient);
    color: white;
    border: none;
    border-radius: 25px;
    padding: 0.75rem 1.25rem;
    font-weight: 600;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.mobile-filter-trigger:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.mobile-filter-trigger:active {
    transform: translateY(0) scale(0.98);
}

/* 移动端筛选浮动按钮 */
.mobile-filter-floating-btn {
    position: fixed;
    bottom: 120px; /* 避免与底部导航冲突 */
    left: 20px;
    width: 56px;
    height: 56px;
    background: var(--youth-gradient);
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-size: 1.25rem;
    font-weight: 600;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
    z-index: var(--z-floating);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.8);
}

.mobile-filter-floating-btn.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.mobile-filter-floating-btn:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.mobile-filter-floating-btn:active {
    transform: translateY(-2px) scale(1.05);
}

.floating-btn-text {
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1;
    margin-top: 1px;
}

/* 移动端筛选遮罩层 */
.mobile-filter-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: var(--z-overlay);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.mobile-filter-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* 移动端筛选侧边栏 */
.mobile-filter-sidebar {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 360px;
    height: 100%;
    background: white;
    z-index: var(--z-sidebar);
    transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    overflow-y: auto;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
}

.mobile-filter-sidebar.show {
    right: 0;
}

/* 移动端筛选头部 */
.mobile-filter-header {
    padding: 1.5rem;
    background: var(--youth-gradient);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

.mobile-filter-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
}

.mobile-filter-close {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.mobile-filter-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

/* 移动端筛选内容区域 */
.mobile-filter-content {
    padding: 1.5rem;
    flex: 1;
    overflow-y: auto;
}

.mobile-filter-content .filter-group {
    margin-bottom: 2rem;
}

.mobile-filter-content .filter-group:last-child {
    margin-bottom: 1rem;
}

.mobile-filter-content .filter-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    color: var(--youth-dark);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.mobile-filter-content .filter-label i {
    color: var(--youth-primary);
    font-size: 1.125rem;
}

/* 移动端分类网格 */
.mobile-category-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    max-height: none;
    overflow: visible;
}

.mobile-category-grid .category-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f8fafc;
    border: 2px solid transparent;
    border-radius: 16px;
    text-decoration: none;
    color: var(--youth-dark);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-height: auto;
}

.mobile-category-grid .category-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--youth-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.mobile-category-grid .category-item:hover::before,
.mobile-category-grid .category-item.active::before {
    opacity: 0.1;
}

.mobile-category-grid .category-item:hover,
.mobile-category-grid .category-item.active {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.15);
    border-color: var(--youth-primary);
    color: var(--youth-primary);
    text-decoration: none;
}

.mobile-category-grid .category-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.mobile-category-grid .category-item:hover .category-icon {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.2);
}

.mobile-category-grid .country-flag {
    width: 28px;
    height: 21px;
    object-fit: cover;
    border-radius: 4px;
}

.mobile-category-grid .category-name {
    font-weight: 600;
    font-size: 0.875rem;
    flex: 1;
    line-height: 1.3;
}

/* 移动端字母网格 */
.mobile-alphabet-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.75rem;
    max-height: none;
    overflow: visible;
}

.mobile-alphabet-grid .alphabet-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 48px;
    border-radius: 12px;
    background: #f8fafc;
    color: var(--youth-dark);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.875rem;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.mobile-alphabet-grid .alphabet-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--youth-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.mobile-alphabet-grid .alphabet-btn:hover::before,
.mobile-alphabet-grid .alphabet-btn.active::before {
    opacity: 1;
}

.mobile-alphabet-grid .alphabet-btn:hover,
.mobile-alphabet-grid .alphabet-btn.active {
    color: white;
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
    text-decoration: none;
    border-color: transparent;
}

.mobile-alphabet-grid .all-btn {
    grid-column: span 2;
    font-size: 0.75rem;
}

/* 移动端搜索表单 */
.mobile-filter-content .search-form {
    width: 100%;
}

.mobile-filter-content .search-container {
    position: relative;
    width: 100%;
}

.mobile-filter-content .search-input {
    width: 100%;
    padding: 1rem 1.25rem 1rem 3rem;
    border: 2px solid #e2e8f0;
    border-radius: 25px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.mobile-filter-content .search-input:focus {
    outline: none;
    border-color: var(--youth-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.mobile-filter-content .search-btn {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--youth-primary);
    font-size: 1.125rem;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.mobile-filter-content .search-btn:hover {
    background: var(--youth-gradient);
    color: white;
    transform: translateY(-50%) scale(1.1);
}

/* 筛选操作按钮 */
.filter-actions {
    padding: 1.5rem;
    border-top: 1px solid #e2e8f0;
    background: #f8fafc;
    margin: 0 -1.5rem -1.5rem;
}

.btn-apply-filters {
    width: 100%;
    padding: 1rem 1.5rem;
    background: var(--youth-gradient);
    color: white;
    border: none;
    border-radius: 16px;
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
}

.btn-apply-filters:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.btn-apply-filters:active {
    transform: translateY(0);
}

/* 修复原有的移动端适配问题 */
@media (max-width: 767.98px) {
    .products-hero {
        padding: 2rem 0 3rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-metrics {
        gap: 1rem;
        flex-direction: column;
    }
    
    .metric-divider {
        display: none;
    }
    
    .metric-item {
        min-width: 120px;
    }
    
    .results-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .results-actions {
        flex-direction: column;
        gap: 1rem;
    }
    
    .view-options {
        justify-content: center;
    }
    
    .sort-select {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 575.98px) {
    .mobile-filter-sidebar {
        width: 100%;
        max-width: none;
    }
    
    .mobile-filter-floating-btn {
        bottom: 90px;
        right: 16px;
        width: 52px;
        height: 52px;
        font-size: 1.125rem;
    }
    
    .floating-btn-text {
        font-size: 0.55rem;
    }
    
    .mobile-alphabet-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 0.5rem;
    }
    
    .mobile-alphabet-grid .alphabet-btn {
        height: 44px;
        font-size: 0.8rem;
    }
    
    .mobile-alphabet-grid .all-btn {
        grid-column: span 2;
    }
    
    .mobile-category-grid .category-item {
        padding: 0.875rem;
        gap: 0.875rem;
    }
    
    .mobile-category-grid .category-icon {
        width: 44px;
        height: 44px;
    }
    
    .mobile-category-grid .country-flag {
        width: 24px;
        height: 18px;
    }
}

/* 性能优化 */
@media (prefers-reduced-motion: reduce) {
    .mobile-filter-sidebar,
    .mobile-filter-overlay,
    .mobile-filter-floating-btn,
    .mobile-filter-trigger,
    .category-item,
    .alphabet-btn {
        transition: none !important;
        animation: none !important;
    }
}

/* 滚动行为优化 */
.mobile-filter-content {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* 修复滚动条样式 */
.mobile-filter-content::-webkit-scrollbar {
    width: 4px;
}

.mobile-filter-content::-webkit-scrollbar-track {
    background: transparent;
}

.mobile-filter-content::-webkit-scrollbar-thumb {
    background: var(--youth-gradient);
    border-radius: 2px;
}

.mobile-filter-content::-webkit-scrollbar-thumb:hover {
    background: var(--youth-primary);
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .mobile-filter-sidebar {
        border: 2px solid var(--youth-primary);
    }
    
    .mobile-filter-trigger,
    .mobile-filter-floating-btn,
    .btn-apply-filters {
        border: 2px solid white;
    }
    
    .category-item,
    .alphabet-btn {
        border-width: 2px;
    }
}

/* 深色主题支持 */
@media (prefers-color-scheme: dark) {
    .mobile-filter-sidebar {
        background: #1e293b;
        color: #f1f5f9;
    }
    
    .mobile-filter-content .filter-label {
        color: #f1f5f9;
    }
    
    .mobile-category-grid .category-item,
    .mobile-alphabet-grid .alphabet-btn {
        background: #334155;
        color: #f1f5f9;
        border-color: #475569;
    }
    
    .mobile-filter-content .search-input {
        background: #334155;
        color: #f1f5f9;
        border-color: #475569;
    }
    
    .filter-actions {
        background: #334155;
        border-color: #475569;
    }
}