/* =========================================
   全局样式
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --text-dark: #2d3748;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
    overflow: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 
                 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow: hidden;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

body.single-page {
    overflow: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-full {
    width: 100%;
    height: 100%;
    padding: 0;
}

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

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

/* =========================================
   导航栏
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
}

.logo a {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 50px;
    width: auto;
    transition: var(--transition);
}

.logo a:hover .logo-img {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(102, 126, 234, 0.1);
}

/* =========================================
   Hero Section - Logo Showcase
   ========================================= */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 100px 20px 50px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    color: var(--white);
    font-size: 2rem;
    font-weight: 300;
    margin-bottom: 3rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    opacity: 0.9;
}

/* Logo Showcase - Central JINZA with Surrounding Brands */
.logo-showcase {
    position: relative;
    width: 600px;
    height: 600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Central JINZA Logo */
.central-logo {
    position: relative;
    z-index: 10;
    text-align: center;
    background: var(--white);
    padding: 3rem;
    border-radius: 50%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 280px;
    height: 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    animation: float 3s ease-in-out infinite;
}

.jinza-main-logo {
    width: 150px;
    height: auto;
    margin-bottom: 1rem;
}

.central-logo h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.central-logo p {
    font-size: 0.9rem;
    color: var(--text-light);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Brand Orbit - Surrounding Logos */
.brand-orbit {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.brand-item {
    position: absolute;
    text-decoration: none;
    transition: var(--transition);
}

.brand-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    text-align: center;
    width: 150px;
    transition: var(--transition);
}

.brand-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.brand-card img {
    width: 100%;
    height: 80px;
    object-fit: contain;
    margin-bottom: 0.5rem;
}

.brand-name {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.9rem;
}

/* Position each brand logo */
.brand-1 {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.brand-2 {
    right: 0;
    top: 50%;
    transform: translateY(-50%);
}

.brand-3 {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.brand-4 {
    left: 0;
    top: 50%;
    transform: translateY(-50%);
}

/* Scroll Indicator */
.scroll-indicator {
    margin-top: 4rem;
    color: var(--white);
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.5rem;
}

.scroll-indicator p {
    font-size: 0.9rem;
    opacity: 0.8;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(10px);
    }
}

/* =========================================
   通用区块样式
   ========================================= */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 5rem 0;
}

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

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

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* =========================================
   About Section
   ========================================= */
.about-section {
    background: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin: 2rem 0 1rem 0;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text p {
    color: var(--text-light);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
    margin-top: 1.5rem;
}

.feature-list li {
    padding: 0.8rem 0;
    font-size: 1.05rem;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.feature-list i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.about-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

/* =========================================
   Brands Section
   ========================================= */
.brands-section {
    background: var(--white);
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.brand-grid-item {
    text-decoration: none;
    display: block;
}

.brand-grid-card {
    background: var(--white);
    border: 2px solid var(--bg-light);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    height: 100%;
}

.brand-grid-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
    border-color: var(--primary-color);
}

.brand-grid-card img {
    width: 100%;
    height: 100px;
    object-fit: contain;
    margin-bottom: 1.5rem;
}

.brand-grid-card h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 0.8rem;
}

.brand-grid-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.learn-more {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.brand-grid-card:hover .learn-more {
    gap: 1rem;
}

/* =========================================
   Contact Section
   ========================================= */
.contact-section {
    background: var(--bg-light);
}

.contact-content {
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 2rem;
    align-items: stretch;
}

.contact-item {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.contact-item-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--bg-light);
}

.contact-item-header i {
    font-size: 2rem;
    color: var(--primary-color);
}

.contact-item-header h3 {
    font-size: 1.4rem;
    color: var(--text-dark);
    margin: 0;
}

/* Company Information */
.contact-item-large {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.detail-group {
    text-align: left;
    padding: 1.25rem;
    background: var(--white);
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.detail-group:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
}

.detail-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-label i {
    font-size: 1rem;
}

.detail-value {
    color: var(--text-dark);
    font-size: 1.05rem;
    margin-bottom: 0.25rem;
    line-height: 1.7;
    font-weight: 500;
}

.detail-subtext {
    color: var(--text-light);
    font-size: 0.9rem;
    font-style: italic;
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid rgba(102, 126, 234, 0.1);
}

/* Email Section */
.contact-item-email {
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.contact-item-email::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    pointer-events: none;
}

.contact-item-email .contact-item-header {
    border-bottom-color: rgba(255, 255, 255, 0.2);
    position: relative;
    z-index: 1;
}

.contact-item-email .contact-item-header i,
.contact-item-email .contact-item-header h3 {
    color: var(--white);
}

.email-action {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex: 1;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.email-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.email-link {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
}

.email-link:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.02);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.email-address {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--white);
    word-break: break-all;
    letter-spacing: 0.5px;
}

.email-hint {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.95);
    opacity: 0.85;
    transition: all 0.3s ease;
}

.email-link:hover .email-hint {
    opacity: 1;
    gap: 0.75rem;
}

.email-hint i {
    font-size: 1rem;
}

.email-note {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.9);
    border-left: 3px solid rgba(255, 255, 255, 0.4);
}

.email-note i {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.95);
}

/* =========================================
   Footer
   ========================================= */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-logo {
    height: 50px;
    width: auto;
    margin-bottom: 1rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* =========================================
   Back to Top Button
   ========================================= */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

/* =========================================
   Responsive Design
   ========================================= */
@media (max-width: 968px) {
    .nav-menu {
        display: none;
    }
    
    .logo-showcase {
        width: 500px;
        height: 500px;
    }
    
    .central-logo {
        width: 220px;
        height: 220px;
        padding: 2rem;
    }
    
    .jinza-main-logo {
        width: 120px;
    }
    
    .brand-card {
        width: 120px;
        padding: 1rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .contact-item {
        padding: 2rem;
    }
    
    .detail-group {
        padding: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 600px) {
    .logo-showcase {
        width: 350px;
        height: 350px;
    }
    
    .central-logo {
        width: 160px;
        height: 160px;
        padding: 1.5rem;
    }
    
    .jinza-main-logo {
        width: 80px;
    }
    
    .central-logo h2 {
        font-size: 1.3rem;
    }
    
    .central-logo p {
        font-size: 0.75rem;
    }
    
    .brand-card {
        width: 90px;
        padding: 0.8rem;
    }
    
    .brand-card img {
        height: 50px;
    }
    
    .brand-name {
        font-size: 0.75rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    section {
        padding: 3rem 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .contact-item {
        padding: 1.5rem;
    }
    
    .contact-item-header {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .contact-item-header h3 {
        font-size: 1.1rem;
    }
    
    .detail-group {
        padding: 1rem;
    }
    
    .detail-value {
        font-size: 0.95rem;
    }
    
    .email-address {
        font-size: 1rem;
    }
    
    .email-link {
        padding: 1.25rem;
    }
}

/* =========================================
   产品区
   ========================================= */
.products-section {
    background: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.product-image {
    position: relative;
    overflow: hidden;
    height: 250px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(102, 126, 234, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.view-details {
    padding: 0.8rem 2rem;
    background: var(--white);
    color: var(--primary-color);
    border-radius: 25px;
    font-weight: 600;
}

.product-info {
    padding: 1.5rem;
}

.product-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: var(--text-dark);
}

.product-info p {
    color: var(--text-light);
    line-height: 1.6;
}

/* =========================================
   服务特色
   ========================================= */
.services-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
}

.services-section .section-title {
    color: var(--white);
}

.services-section .section-title::after {
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-item {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.service-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

/* =========================================
   关于我们
   ========================================= */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text h3 {
    font-size: 1.5rem;
    margin: 1rem 0;
    color: var(--primary-color);
}

.about-text p {
    margin: 1rem 0;
    color: var(--text-light);
    line-height: 1.8;
}

.about-images {
    display: grid;
    gap: 1.5rem;
}

.about-image-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-image-item img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.image-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: var(--white);
    padding: 2rem 1.5rem 1rem;
    font-weight: 600;
}

/* =========================================
   企业文化
   ========================================= */
.culture-section {
    background: var(--bg-light);
}

.culture-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.culture-image {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

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

.culture-text h3 {
    font-size: 1.8rem;
    margin: 1rem 0;
    color: var(--primary-color);
}

.culture-text p {
    margin: 1rem 0;
    color: var(--text-light);
    line-height: 1.8;
}

/* =========================================
   企业社会责任
   ========================================= */
.csr-section {
    text-align: center;
}

.csr-content {
    max-width: 800px;
    margin: 0 auto;
}

.csr-content > p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 3rem;
}

.csr-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 15px;
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

/* =========================================
   新闻动态
   ========================================= */
.news-section {
    background: var(--bg-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.news-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.news-image {
    position: relative;
    height: 220px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-date {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--primary-color);
}

.news-content {
    padding: 1.5rem;
}

.news-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: var(--text-dark);
}

.news-content p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.read-more {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.read-more:hover {
    gap: 1rem;
}

.view-more-wrapper {
    text-align: center;
    margin-top: 3rem;
}

/* =========================================
   联系我们
   ========================================= */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 15px;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.contact-details p {
    color: var(--text-light);
}

.contact-form {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 15px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid transparent;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    background: var(--white);
    transition: var(--transition);
}

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

.contact-form .btn-primary {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
}

/* =========================================
   极简联系区
   ========================================= */
.minimal-contact {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    padding: 4rem 0;
}

.minimal-contact .contact-content {
    text-align: center;
}

.minimal-contact h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-dark);
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.contact-item-minimal {
    text-align: center;
    padding: 2rem;
    background: var(--white);
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.contact-item-minimal:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.contact-item-minimal i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-item-minimal h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.contact-item-minimal p {
    font-size: 1rem;
    color: var(--text-light);
}

/* =========================================
   动画
   ========================================= */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease;
}

.email-link:hover .email-hint i {
    animation: pulse 1s ease-in-out infinite;
}

/* =========================================
   响应式设计
   ========================================= */
@media (max-width: 968px) {
    .logo-img {
        height: 50px;
    }

    .hero-section {
        height: 100vh;
        min-height: 500px;
    }

    .slide-title {
        font-size: 2rem;
    }

    .minimal-contact h2 {
        font-size: 2rem;
    }

    .contact-info-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .brand-logos {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .brand-showcase h3 {
        font-size: 1.2rem;
    }

    .slide-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .about-content,
    .culture-content,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .culture-content .culture-image {
        order: -1;
    }

    .products-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .csr-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-section {
        height: 100vh;
        min-height: 450px;
    }

    .slide-title {
        font-size: 1.5rem;
    }

    .slider-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .logo-img {
        height: 45px;
    }

    .brand-logos {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .brand-showcase {
        padding: 1.5rem 0 2rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .btn-primary, .btn-secondary {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .csr-stats {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 2.5rem;
    }
}

/* =========================================
   单页布局样式
   ========================================= */

/* 移除导航栏样式 */
.single-page .navbar {
    display: none;
}

/* 主内容区域 */
.main-content {
    flex: 1;
    display: flex;
    overflow: hidden;
    height: 100vh;
}

.split-layout {
    display: flex;
    width: 100%;
    height: 100%;
}

/* 左右面板 */
.left-panel,
.right-panel {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
}

.left-panel {
    background: linear-gradient(135deg, #f8f9ff 0%, #fff 100%);
    border-right: 2px solid rgba(102, 126, 234, 0.1);
}

.right-panel {
    background: var(--white);
}

.panel-content {
    max-width: 600px;
    margin: 0 auto;
}

/* Panel Header with Logo */
.panel-header {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.panel-logo {
    width: 80px;
    height: auto;
    flex-shrink: 0;
}

.panel-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0;
    margin-top: 0.5rem;
    text-align: left;
    position: relative;
    padding-bottom: 1rem;
}

.panel-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* About Us 样式 */
.about-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.company-intro {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-dark);
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.info-section {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.info-section:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.15);
}

.info-section h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.info-section h3 i {
    font-size: 1.2rem;
}

.info-section p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-dark);
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.05rem;
    color: var(--text-dark);
}

.feature-list li i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* Right Panel - 4宫格布局 */
.panel-content-wide {
    max-width: 100%;
    width: 100%;
    padding: 0 1rem;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.panel-title-center {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
    position: relative;
    padding-bottom: 0.75rem;
    flex-shrink: 0;
}

.panel-title-center::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* 4宫格品牌网格 */
.brands-grid-4 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: 650px;
    margin: 0 auto;
    flex: 1;
    align-content: center;
}

.brand-grid-card {
    background: var(--white);
    border-radius: 12px;
    border: 2px solid rgba(102, 126, 234, 0.15);
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    position: relative;
}

.brand-grid-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.25);
}

.brand-card-inner {
    display: flex;
    flex-direction: column;
    padding: 1.5rem 1.25rem 1.25rem;
    height: 100%;
    position: relative;
}

.brand-logo-box {
    width: 100%;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8f9ff 0%, #fff 100%);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.08);
    transition: all 0.3s ease;
}

.brand-grid-card:hover .brand-logo-box {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
}

.brand-logo-box img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.brand-details {
    flex: 1;
    text-align: center;
    margin-bottom: 1.5rem;
}

.brand-card-inner h3 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 0.4rem;
    font-weight: 600;
}

.brand-card-inner p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.3;
    margin-bottom: 0;
}

.view-more {
    position: absolute;
    bottom: 0.75rem;
    right: 0.75rem;
    font-size: 0.75rem;
    color: var(--primary-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    opacity: 0.7;
    transition: all 0.3s ease;
}

.brand-grid-card:hover .view-more {
    opacity: 1;
    gap: 0.4rem;
}

.view-more i {
    font-size: 0.7rem;
}

/* 页脚最小化 */
.footer-minimal {
    background: var(--text-dark);
    color: var(--white);
    padding: 1.25rem 0;
    text-align: center;
    font-size: 0.85rem;
}

.footer-content-minimal {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.social-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    font-size: 1.1rem;
    transition: all 0.3s ease;
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
}

#wechatBtn {
    padding: 0;
}

.social-icon:hover {
    background: var(--primary-color);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.footer-text {
    margin: 0;
    color: rgba(255, 255, 255, 0.8);
}

/* WeChat Modal */
.wechat-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    animation: fadeIn 0.3s ease;
}

.wechat-modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.wechat-modal-content {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    position: relative;
    animation: slideIn 0.3s ease;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.wechat-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.wechat-close:hover {
    color: var(--text-dark);
    transform: rotate(90deg);
}

.wechat-modal-content h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.wechat-qr-image {
    width: 100%;
    max-width: 300px;
    height: auto;
    margin: 0 auto 1rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.wechat-modal-content p {
    color: var(--text-light);
    font-size: 1rem;
    margin: 0;
}

/* =========================================
   Operations Suite 页面样式
   ========================================= */
.system-body {
    background: linear-gradient(135deg, #eef2ff 0%, #ffffff 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: var(--text-dark);
}

.system-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
    position: sticky;
    top: 0;
    z-index: 100;
}

.system-brand {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.system-logo {
    width: 70px;
    height: auto;
}

.system-brand-text h1 {
    font-size: 1.6rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.system-brand-text p {
    margin: 0;
    color: var(--text-light);
    font-size: 0.95rem;
}

.system-user-panel {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.system-user-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.25rem;
    font-size: 0.85rem;
    color: var(--text-light);
}

.system-user-name {
    font-weight: 600;
    color: var(--text-dark);
}

.btn-logout {
    background: transparent;
    border: 1px solid rgba(102, 126, 234, 0.6);
    border-radius: 25px;
    padding: 0.5rem 1.5rem;
    color: var(--primary-color);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-logout:hover,
.btn-logout:focus {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    box-shadow: 0 12px 24px rgba(102, 126, 234, 0.2);
    border-color: transparent;
}

.system-main {
    flex: 1;
    padding: 2rem 3rem 3rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.system-nav {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.system-nav-item {
    border: none;
    border-radius: 999px;
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    background: rgba(102, 126, 234, 0.12);
    color: var(--primary-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

.system-nav-item:hover,
.system-nav-item:focus {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.2);
}

.system-nav-item.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    box-shadow: 0 12px 26px rgba(102, 126, 234, 0.25);
}

.system-section {
    display: none;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 2rem 2.5rem;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
}

.system-section.active {
    display: block;
}

.section-header {
    margin-bottom: 1.5rem;
}

.section-header.bilingual h2 {
    font-size: 1.6rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.section-header p {
    color: var(--text-light);
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.module-card {
    background: linear-gradient(180deg, rgba(247, 250, 252, 0.9) 0%, rgba(255, 255, 255, 0.9) 100%);
    border-radius: 18px;
    padding: 1.5rem;
    box-shadow: 0 16px 32px rgba(102, 126, 234, 0.12);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.module-card h3 {
    font-size: 1.15rem;
    color: var(--secondary-color);
}

.module-checklist {
    list-style: none;
    display: grid;
    gap: 0.45rem;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.module-checklist li::before {
    content: '\2022';
    color: var(--primary-color);
    font-weight: bold;
    display: inline-block;
    width: 1rem;
}

.module-form {
    background: rgba(248, 250, 255, 0.9);
    border: 1px solid rgba(102, 126, 234, 0.15);
    border-radius: 18px;
    padding: 1.75rem;
    box-shadow: 0 18px 36px rgba(102, 126, 234, 0.12);
}

.module-form h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.form-intro {
    color: var(--text-light);
    margin-bottom: 1.25rem;
}

.form-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem 1.5rem;
}

.form-feedback {
    font-size: 0.85rem;
    color: var(--secondary-color);
    margin-top: 0.75rem;
    min-height: 1.2rem;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.form-feedback.visible {
    opacity: 1;
}

.metric-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.metric-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(244, 247, 255, 0.95) 100%);
    border-radius: 18px;
    padding: 1.5rem;
    box-shadow: 0 20px 36px rgba(102, 126, 234, 0.12);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.metric-card h4 {
    font-size: 1rem;
    color: var(--secondary-color);
    font-weight: 600;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.metric-footnote {
    font-size: 0.8rem;
    color: var(--text-light);
}

.data-panel {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 1.75rem;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    margin-bottom: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.data-panel-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
}

.data-panel-header h3 {
    font-size: 1.25rem;
    color: var(--secondary-color);
}

.data-panel-controls {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-wrap: wrap;
}

.data-panel-controls label {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 600;
}

.data-panel-controls input,
.data-panel-controls select {
    border: 1px solid #d3d8ef;
    border-radius: 999px;
    padding: 0.5rem 1.1rem;
    font-size: 0.9rem;
    color: var(--text-dark);
    background: rgba(247, 250, 255, 0.8);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.data-panel-controls input:focus,
.data-panel-controls select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.table-wrapper {
    overflow-x: auto;
}

.bilingual-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 640px;
}

.bilingual-table th,
.bilingual-table td {
    text-align: left;
    padding: 0.9rem 0.75rem;
    border-bottom: 1px solid rgba(226, 232, 240, 0.7);
    font-size: 0.92rem;
}

.bilingual-table thead th {
    color: var(--primary-color);
    font-weight: 600;
    border-bottom: 2px solid rgba(102, 126, 234, 0.3);
    background: rgba(248, 250, 255, 0.8);
}

.bilingual-table tbody tr:hover {
    background: rgba(102, 126, 234, 0.06);
}

.compliance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.compliance-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 18px;
    padding: 1.5rem;
    border: 1px solid rgba(102, 126, 234, 0.1);
    box-shadow: 0 18px 32px rgba(15, 23, 42, 0.08);
}

.compliance-card h3 {
    font-size: 1.1rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.compliance-card ul {
    list-style: none;
    display: grid;
    gap: 0.6rem;
    color: var(--text-dark);
    font-size: 0.95rem;
    padding-left: 0;
}

.compliance-card ul li::before {
    content: '\2714';
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.system-footer {
    padding: 1rem 2rem;
    text-align: center;
    color: var(--text-light);
    background: transparent;
    font-size: 0.85rem;
}

@media (max-width: 1024px) {
    .system-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        position: static;
    }

    .system-user-panel {
        align-self: stretch;
        justify-content: space-between;
    }
}

@media (max-width: 768px) {
    .system-main {
        padding: 1.5rem;
    }

    .system-section {
        padding: 1.5rem;
    }

    .system-nav-item {
        flex: 1 1 100%;
        text-align: center;
    }

    .form-layout {
        grid-template-columns: 1fr;
    }

    .metric-row {
        grid-template-columns: 1fr 1fr;
    }

    .bilingual-table {
        min-width: 100%;
    }
}

@media (max-width: 540px) {
    .metric-row {
        grid-template-columns: 1fr;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* 滚动条样式 */
.left-panel::-webkit-scrollbar,
.right-panel::-webkit-scrollbar {
    width: 8px;
}

.left-panel::-webkit-scrollbar-track,
.right-panel::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
}

.left-panel::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

.right-panel::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

/* 响应式设计 */
@media (max-width: 968px) {
    /* 移动端允许滚动 */
    body.single-page {
        overflow-y: auto !important;
        height: auto !important;
    }
    
    html {
        overflow-y: auto !important;
    }
    
    .split-layout {
        flex-direction: column;
        height: auto !important;
        min-height: auto;
    }
    
    .left-panel,
    .right-panel {
        flex: auto;
        height: auto !important;
        overflow-y: visible !important;
        border-right: none;
        border-bottom: 2px solid rgba(102, 126, 234, 0.1);
        padding: 2rem 1.5rem;
    }
    
    .panel-title,
    .panel-title-center {
        font-size: 1.8rem;
        margin-bottom: 1.5rem;
    }
    
    .panel-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .panel-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .brands-grid-4 {
        gap: 1.25rem;
    }
    
    .brand-logo-box {
        height: 70px;
    }
    
    .main-content {
        overflow-y: auto;
    }
    
    body.single-page {
        overflow-y: auto;
        height: auto;
    }
    
    /* 确保footer在平板端可见 */
    .footer-minimal {
        position: relative;
        z-index: 100;
        display: block !important;
    }
    
    .social-links {
        display: flex !important;
    }
}

@media (max-width: 600px) {
    /* 移动端完全允许滚动 */
    body.single-page {
        overflow-y: auto !important;
        height: auto !important;
    }
    
    html {
        overflow-y: auto !important;
        height: auto !important;
    }
    
    .main-content {
        height: auto !important;
        overflow-y: visible !important;
    }
    
    .split-layout {
        height: auto !important;
    }
    
    .left-panel,
    .right-panel {
        height: auto !important;
        overflow-y: visible !important;
        padding: 1.5rem 1rem;
    }
    
    .panel-logo {
        width: 60px;
    }
    
    .panel-title,
    .panel-title-center {
        font-size: 1.5rem;
        margin-bottom: 1.25rem;
    }
    
    .company-intro {
        font-size: 1rem;
        padding: 1rem;
    }
    
    .brands-grid-4 {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
    
    .brand-logo-box {
        height: 80px;
    }
    
    .brand-card-inner {
        padding: 1.25rem 1rem 1rem;
    }
    
    .brand-card-inner h3 {
        font-size: 1.1rem;
    }
    
    .brand-card-inner p {
        font-size: 0.8rem;
    }
    
    /* Footer - 确保在移动端显示 */
    .footer-minimal {
        position: relative;
        z-index: 100;
        padding: 1.5rem 0;
        background: var(--text-dark);
        display: block !important;
    }
    
    .footer-content-minimal {
        display: flex !important;
        flex-direction: column;
        gap: 1rem;
    }
    
    .social-links {
        display: flex !important;
        flex-wrap: wrap;
        gap: 0.75rem;
        justify-content: center;
    }
    
    .social-icon {
        width: 36px;
        height: 36px;
        font-size: 1rem;
        display: flex !important;
        align-items: center;
        justify-content: center;
    }
    
    .footer-text {
        font-size: 0.75rem;
        line-height: 1.5;
        padding: 0 1rem;
    }
}

/* =========================================
   系统模块化组件样式
   System Modular Component Styles
   ========================================= */

/* Badge 样式 */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background-color: #10b981;
    color: #ffffff;
}

.badge-warning {
    background-color: #f59e0b;
    color: #ffffff;
}

.badge-info {
    background-color: #3b82f6;
    color: #ffffff;
}

.badge-danger {
    background-color: #ef4444;
    color: #ffffff;
}

.badge-secondary {
    background-color: #6b7280;
    color: #ffffff;
}

/* 图标按钮 */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    padding: 0;
    margin: 0 0.25rem;
    border: none;
    background: transparent;
    color: #6b7280;
    cursor: pointer;
    border-radius: 0.25rem;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    background-color: #f3f4f6;
    color: #667eea;
}

.btn-icon:active {
    background-color: #e5e7eb;
}

.btn-icon i {
    font-size: 1rem;
}

/* 空状态样式 */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #9ca3af;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #6b7280;
}

.empty-state p {
    font-size: 0.875rem;
    color: #9ca3af;
}

/* 加载状态 */
.loading-spinner {
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    border: 3px solid #f3f4f6;
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spinner 0.8s linear infinite;
}

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

/* 表格操作列 */
.table-wrapper tbody td:last-child {
    white-space: nowrap;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .btn-icon {
        width: 1.75rem;
        height: 1.75rem;
        margin: 0 0.125rem;
    }
    
    .badge {
        font-size: 0.65rem;
        padding: 0.2rem 0.5rem;
    }
}