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

:root {
    --primary: #FF6B35;
    --primary-light: #FF8C5A;
    --primary-dark: #E55A2B;
    --secondary: #1E293B;
    --accent: #F59E0B;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    
    --bg: #F8FAFC;
    --surface: #FFFFFF;
    --border: #E2E8F0;
    --text: #1E293B;
    --text-secondary: #64748B;
    --text-light: #94A3B8;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* 导航栏 */
.navbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
}

.nav-menu {
    display: flex;
    gap: 24px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
    background: rgba(255, 107, 53, 0.1);
}

.nav-auth {
    display: flex;
    gap: 12px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--secondary);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-block {
    width: 100%;
}

.btn-small {
    padding: 4px 12px;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 1rem;
}

/* Hero 区域 */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    padding: 64px 0;
    text-align: center;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.hero-subtitle {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
    justify-content: center;
    margin-top: 32px;
}

.stat-item {
    text-align: center;
}

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

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* 商品展示区 */
.products-section {
    padding: 48px 0;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.filter-bar {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.filter-btn {
    padding: 6px 12px;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover, .filter-btn.active {
    border-color: var(--primary);
    background: var(--primary);
    color: white;
}

/* 商品卡片网格 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

.product-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
}

.product-image {
    height: 160px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.product-content {
    padding: 16px;
}

.product-name {
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 1rem;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
}

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.product-original-price {
    font-size: 0.875rem;
    color: var(--text-light);
    text-decoration: line-through;
    margin-left: 8px;
}

.product-tag {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.tag-transition {
    background: #FEF3C7;
    color: #92400E;
}

.tag-review {
    background: #DBEAFE;
    color: #1E40AF;
}

/* 会员专区 */
.member-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    padding: 48px 0;
    margin-bottom: 48px;
    border-radius: 16px;
}

.member-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.member-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.member-price {
    font-size: 3rem;
    font-weight: 700;
}

.member-benefits {
    list-style: none;
    margin-top: 16px;
}

.member-benefits li {
    padding: 4px 0;
    font-size: 0.9375rem;
}

.member-benefits li::before {
    content: '✓ ';
    font-weight: 700;
}

/* 登录弹窗 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.hidden {
    display: none;
}

.modal {
    background: var(--surface);
    border-radius: 16px;
    padding: 32px;
    width: 100%;
    max-width: 400px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
}

/* 表单样式 */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 4px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.875rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* 认证区域 */
.auth-section {
    padding: 48px 0;
}

.auth-card {
    background: var(--surface);
    border-radius: 16px;
    padding: 32px;
    max-width: 480px;
    margin: 0 auto;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.auth-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
}

.auth-tab {
    flex: 1;
    padding: 12px;
    border: none;
    background: var(--bg);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s;
}

.auth-tab.active {
    background: var(--primary);
    color: white;
}

.auth-form h3 {
    margin-bottom: 24px;
    font-size: 1.25rem;
}

.auth-msg {
    margin-top: 16px;
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    font-size: 0.875rem;
}

.auth-msg.success {
    background: #DCFCE7;
    color: #166534;
}

.auth-msg.error {
    background: #FEE2E2;
    color: #991B1B;
}

.hidden {
    display: none !important;
}

/* Toast 提示 */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 24px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 2000;
    animation: fadeInUp 0.3s ease;
}

.toast.info { background: #3B82F6; }
.toast.success { background: #10B981; }
.toast.warning { background: #F59E0B; }
.toast.error { background: #EF4444; }

@keyframes fadeInUp {
    from { opacity: 0; transform: translate(-50%, 20px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}

/* 数据表格 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}

.data-table th,
.data-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    background: var(--bg);
    font-weight: 600;
    color: var(--text-secondary);
}

.data-table tr:hover {
    background: var(--bg);
}

/* 分销概览 */
.dist-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.dist-intro {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 32px;
}

.dist-intro ul {
    list-style: none;
    margin-top: 16px;
}

.dist-intro li {
    padding: 4px 0;
    color: var(--text-secondary);
}

.dist-intro li::before {
    content: '• ';
    color: var(--primary);
}

.withdraw-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 32px;
}

.withdrawal-history {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
}

/* 订单卡片 */
.order-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 16px;
}

.order-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--border);
}

.order-no {
    font-weight: 600;
    color: var(--text-secondary);
}

.order-status {
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.order-status.paid {
    background: #DCFCE7;
    color: #166534;
}

.order-status.pending {
    background: #FEF3C7;
    color: #92400E;
}

.order-body {
    padding: 16px;
}

.order-footer {
    padding: 16px;
    display: flex;
    justify-content: flex-end;
    border-top: 1px solid var(--border);
    font-weight: 700;
    color: var(--primary);
}

/* 页脚 */
.footer {
    background: var(--secondary);
    color: white;
    padding: 32px 0;
    text-align: center;
    margin-top: 48px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .member-content {
        flex-direction: column;
        text-align: center;
    }
    
    .dist-overview {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 769px) {
    .mobile-menu-btn {
        display: none;
    }
}