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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    background-color: #fff;
    scroll-behavior: smooth;
}

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

.bg-light {
    background-color: #faf8f5;
}

/* Page Header - Consistent with index.html */
.page-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: transparent;
    transition: background 0.3s, box-shadow 0.3s;
}

.page-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-img {
    height: 40px;
    width: auto;
}

.logo-divider {
    width: 1px;
    height: 30px;
    background: rgba(255,255,255,0.3);
    margin: 0 10px;
}

.page-header.scrolled .logo-divider {
    background: #ddd;
}

.logo-desc {
    font-size: 15px;
    color: rgba(255,255,255,0.8);
}

.page-header.scrolled .logo-desc {
    color: #666;
}

.nav-links {
    display: flex;
    gap: 35px;
}

.nav-links a {
    text-decoration: none;
    color: rgba(255,255,255,0.9);
    font-size: 16px;
    transition: color 0.3s;
    position: relative;
}

.nav-links a:hover {
    color: #fff;
}

.nav-links a.active {
    color: #fff;
}

.page-header.scrolled .nav-links a {
    color: #333;
}

.page-header.scrolled .nav-links a:hover,
.page-header.scrolled .nav-links a.active {
    color: #c9a96e;
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: #c9a96e;
}

/* Page Hero */
.page-hero {
    background: linear-gradient(135deg, #f5f0e8 0%, #e8e0d5 100%);
    padding: 150px 20px 80px;
    text-align: center;
}

.page-hero-content h1 {
    font-size: 48px;
    color: #333;
    margin-bottom: 10px;
    font-weight: 600;
}

.page-subtitle {
    font-size: 18px;
    color: #c9a96e;
    letter-spacing: 3px;
    margin-bottom: 15px;
}

.page-desc {
    font-size: 16px;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 60px;
    padding-top: 60px;
}

.section-label {
    display: inline-block;
    font-size: 14px;
    color: #c9a96e;
    letter-spacing: 2px;
    margin-bottom: 10px;
    background: rgba(201, 169, 110, 0.1);
    padding: 5px 15px;
    border-radius: 20px;
}

.section-header h2 {
    font-size: 36px;
    color: #333;
    margin-bottom: 10px;
}

.section-desc {
    font-size: 16px;
    color: #666;
}

/* Product Category Navigation */
.category-nav {
    background: #fff;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 80px;
    z-index: 999;
}

.category-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.category-tab {
    padding: 10px 25px;
    text-decoration: none;
    color: #666;
    font-size: 15px;
    border-radius: 25px;
    transition: all 0.3s;
    background: #f5f0e8;
}

.category-tab:hover,
.category-tab.active {
    background: #c9a96e;
    color: #fff;
}

/* Product Sections */
.product-section {
    padding: 80px 0;
}

.product-section.bg-light {
    background-color: #faf8f5;
}

/* Product Grid */
.products-grid {
    display: grid;
    gap: 30px;
}

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

.products-grid.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* Product Card */
.product-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.product-card.main-card {
    border: 2px solid #c9a96e;
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: #c9a96e;
    color: #fff;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 14px;
    z-index: 10;
}

.product-image {
    height: 280px;
    overflow: hidden;
    position: relative;
    background: #ffffff;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.1);
    transition: transform 0.5s;
}

.product-card:hover .product-image img {
    transform: scale(1.18);
}

.product-image.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #c9a96e 0%, #d4a574 100%);
    color: #fff;
    font-size: 20px;
    font-weight: 600;
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(139, 115, 85, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 25px;
    opacity: 0;
    transition: opacity 0.3s;
}

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

.product-overlay p {
    color: #fff;
    font-size: 14px;
    line-height: 1.8;
    text-align: center;
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    font-size: 22px;
    color: #333;
    margin-bottom: 5px;
}

.product-en {
    display: block;
    font-size: 13px;
    color: #c9a96e;
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.product-desc {
    font-size: 15px;
    color: #666;
    line-height: 1.6;
}

/* About Us - Company Introduction */
.about-intro {
    padding: 80px 0;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-text h2 {
    font-size: 36px;
    color: #333;
    margin: 15px 0 25px;
}

.intro-text p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.intro-image {
    border-radius: 16px;
    overflow: hidden;
}

.intro-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

/* Core Advantages */
.advantages-section {
    padding: 80px 0;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.advantage-card {
    text-align: center;
    padding: 40px 25px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.advantage-card:hover {
    transform: translateY(-5px);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
}

.advantage-icon svg {
    width: 100%;
    height: 100%;
}

.advantage-card h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 12px;
}

.advantage-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* Cooperation Methods */
.cooperation-section {
    padding: 80px 0;
}

.cooperation-grid {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.cooperation-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.cooperation-card:nth-child(even) {
    direction: rtl;
}

.cooperation-card:nth-child(even) > * {
    direction: ltr;
}

.cooperation-image {
    height: 100%;
    min-height: 300px;
    background: transparent;
}

.cooperation-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.08);
}

.cooperation-content {
    padding: 40px;
}

.cooperation-content h3 {
    font-size: 28px;
    color: #333;
    margin-bottom: 20px;
}

.cooperation-desc {
    font-size: 16px;
    color: #666;
    margin-bottom: 25px;
    line-height: 1.8;
}

.cooperation-features {
    list-style: none;
}

.cooperation-features li {
    padding: 10px 0;
    color: #555;
    position: relative;
    padding-left: 25px;
    font-size: 15px;
}

.cooperation-features li::before {
    content: '✓';
    color: #c9a96e;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Process Steps */
.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.step {
    text-align: center;
    padding: 25px 15px;
    background: #faf8f5;
    border-radius: 12px;
}

.step-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: #c9a96e;
    margin-bottom: 15px;
}

.step h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.step p {
    font-size: 14px;
    color: #666;
}

/* Timeline */
.timeline {
    display: flex;
    gap: 25px;
}

.timeline-item {
    flex: 1;
    text-align: center;
    padding: 30px 20px;
    background: #faf8f5;
    border-radius: 12px;
}

.timeline-day {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: #c9a96e;
    margin-bottom: 12px;
}

.timeline-item p {
    color: #666;
    font-size: 15px;
}

/* Packaging Options */
.packaging-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.packaging-item {
    text-align: center;
    padding: 30px 20px;
    background: #faf8f5;
    border-radius: 12px;
}

.packaging-item h4 {
    font-size: 22px;
    color: #333;
    margin-bottom: 12px;
}

.packaging-item p {
    color: #666;
    font-size: 14px;
}

/* Cooperation Models */
.model-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.model-card {
    text-align: center;
    padding: 35px 25px;
    background: #faf8f5;
    border-radius: 12px;
    transition: transform 0.3s;
}

.model-card:hover {
    transform: translateY(-5px);
}

.model-card h4 {
    font-size: 22px;
    color: #333;
    margin-bottom: 12px;
}

.model-card p {
    color: #666;
    font-size: 15px;
}

/* Success Cases */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.case-card {
    padding: 30px;
    background: #faf8f5;
    border-radius: 12px;
    border-left: 4px solid #c9a96e;
}

.case-card h4 {
    font-size: 20px;
    color: #333;
    margin-bottom: 12px;
}

.case-card p {
    color: #666;
    font-size: 15px;
}

/* Factory Section */
.factory-section {
    padding: 80px 0;
}

.factory-grid {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.factory-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.factory-card:nth-child(even) {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.factory-card:nth-child(odd) {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.factory-card:nth-child(even) .factory-image {
    order: 2;
}

.factory-image {
    height: 100%;
    min-height: 300px;
    background: transparent;
}

.factory-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.08);
}

.factory-content {
    padding: 40px;
}

.factory-content h3 {
    font-size: 28px;
    color: #333;
    margin-bottom: 20px;
}

.factory-desc {
    font-size: 16px;
    color: #666;
    margin-bottom: 25px;
    line-height: 1.8;
}

.factory-features {
    list-style: none;
}

.factory-features li {
    padding: 10px 0;
    color: #555;
    position: relative;
    padding-left: 25px;
    font-size: 15px;
}

.factory-features li::before {
    content: '✓';
    color: #c9a96e;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Production Statistics */
.production-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 20px;
}

.stat {
    text-align: center;
    padding: 30px;
    background: #faf8f5;
    border-radius: 12px;
}

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 700;
    color: #c9a96e;
    margin-bottom: 10px;
}

.stat-label {
    color: #666;
    font-size: 16px;
}

/* 技术网格 */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 20px;
}

.tech-card {
    text-align: center;
    padding: 25px 15px;
    background: #faf8f5;
    border-radius: 12px;
}

.tech-card h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.tech-card p {
    color: #666;
    font-size: 14px;
}

/* Quality Control Steps */
.quality-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 20px;
}

.quality-step {
    text-align: center;
    padding: 25px 15px;
    background: #faf8f5;
    border-radius: 12px;
}

.step-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: #c9a96e;
    color: #fff;
    border-radius: 50%;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
}

.quality-step h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.quality-step p {
    color: #666;
    font-size: 14px;
}

/* 认证体系 */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-top: 20px;
}

.cert-item {
    text-align: center;
    padding: 25px 15px;
    background: #faf8f5;
    border-radius: 12px;
}

.cert-name {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: #c9a96e;
    margin-bottom: 10px;
}

.cert-item p {
    color: #666;
    font-size: 13px;
}

/* Contact Us Page */
.contact-section {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 50px;
    margin-bottom: 60px;
}

.contact-form-wrapper h2,
.contact-info-wrapper h2 {
    font-size: 28px;
    color: #333;
    margin-bottom: 10px;
}

.form-desc {
    color: #666;
    margin-bottom: 30px;
    font-size: 15px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.form-group label {
    font-size: 14px;
    color: #333;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 16px;
    border: 1px solid #e0d5c8;
    border-radius: 10px;
    font-size: 15px;
    transition: border-color 0.3s, box-shadow 0.3s;
    font-family: inherit;
    background: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #c9a96e;
    box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-btn {
    background: #c9a96e;
    color: #fff;
    border: none;
    padding: 16px 40px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
    align-self: flex-start;
}

.submit-btn:hover {
    background: #b8985a;
    transform: translateY(-2px);
}

/* 联系信息 */
.info-item {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: #faf8f5;
    border-radius: 12px;
    margin-bottom: 16px;
    transition: transform 0.3s;
}

.info-item:hover {
    transform: translateX(5px);
}

.info-icon {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
}

.info-icon svg {
    width: 100%;
    height: 100%;
}

.info-content h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 8px;
}

.info-content p {
    color: #666;
    font-size: 15px;
    line-height: 1.6;
}

/* Map */
.map-section {
    margin-top: 60px;
}

.map-section h2 {
    font-size: 28px;
    color: #333;
    margin-bottom: 25px;
    text-align: center;
}

.map-container {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* CTA区块 */
.cta-section {
    background: linear-gradient(135deg, #c9a96e 0%, #d4a574 100%);
    padding: 80px 20px;
    text-align: center;
}

.cta-section h2 {
    font-size: 36px;
    color: #fff;
    margin-bottom: 15px;
}

.cta-section p {
    font-size: 18px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 30px;
}

.btn-primary {
    display: inline-block;
    background: #fff;
    color: #c9a96e;
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary:hover {
    background: #333;
    color: #fff;
    transform: translateY(-2px);
}

/* Footer */
.site-footer {
    background: #fff;
    color: #333;
    padding: 60px 0 0;
    border-top: 1px solid #e8e0d5;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: 40px;
}

.footer-logo {
    height: 45px;
    width: auto;
    margin-bottom: 15px;
}

.footer-en {
    font-size: 14px;
    color: #c9a96e;
    margin-bottom: 10px;
}

.footer-slogan {
    font-size: 14px;
    color: #666;
}

.footer-nav h4,
.footer-products h4,
.footer-contact h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 20px;
}

.footer-nav a,
.footer-products a {
    display: block;
    color: #666;
    text-decoration: none;
    padding: 5px 0;
    transition: color 0.3s;
}

.footer-nav a:hover,
.footer-products a:hover {
    color: #c9a96e;
}

.footer-contact p {
    color: #666;
    padding: 5px 0;
    font-size: 14px;
}

.footer-bottom {
    margin-top: 40px;
    padding: 20px;
    text-align: center;
    border-top: 1px solid #e8e0d5;
}

.footer-bottom p {
    color: #999;
    font-size: 12px;
    letter-spacing: 2px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-steps,
    .quality-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cert-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-links {
        gap: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .page-hero-content h1 {
        font-size: 32px;
    }
    
    .products-grid.grid-2,
    .products-grid.grid-3 {
        grid-template-columns: 1fr;
    }
    
    .intro-content {
        grid-template-columns: 1fr;
    }
    
    .cooperation-card {
        grid-template-columns: 1fr;
    }
    
    .cooperation-card:nth-child(even) {
        direction: ltr;
    }
    
    .factory-card:nth-child(even),
    .factory-card:nth-child(odd) {
        grid-template-columns: 1fr;
    }
    
    .factory-card:nth-child(even) .factory-image {
        order: 0;
    }
    
    .process-steps,
    .timeline,
    .packaging-options,
    .model-grid,
    .cases-grid,
    .production-stats,
    .tech-grid,
    .quality-steps {
        grid-template-columns: 1fr;
    }
    
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .category-tabs {
        gap: 10px;
    }
    
    .category-tab {
        padding: 8px 18px;
        font-size: 14px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}