/* 基础样式 */
:root {
    --primary-color: #8B4513;
    --secondary-color: #D4B996;
    --accent-color: #2F4F4F;
    --light-color: #F5F5F5;
    --dark-color: #333333;
    --text-color: #444444;
    --spacing-sm: 10px;
    --spacing-md: 20px;
    --spacing-lg: 40px;
    --border-radius: 4px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: #fefefe;
}

h1, h2, h3, h4 {
    font-family: 'Noto Serif SC', serif;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.8rem;
    line-height: 1.2;
}

h2 {
    font-size: 2.2rem;
    position: relative;
    padding-bottom: 15px;
}

h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--secondary-color);
}

.section-intro {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

p {
    margin-bottom: var(--spacing-md);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-lg) 0;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

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

.btn-outline:hover {
    background-color: var(--light-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* 导航栏 */
header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    font-family: 'Noto Serif SC', serif;
}

.logo span {
    color: var(--accent-color);
}

nav ul {
    display: flex;
}

nav li {
    margin-left: var(--spacing-lg);
}

nav a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    font-size: 1.05rem;
    transition: color 0.3s ease;
    position: relative;
}

nav a:hover, nav a.active {
    color: var(--primary-color);
}

nav a:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

nav a:hover:after, nav a.active:after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark-color);
    cursor: pointer;
}

/* 面包屑导航 */
.breadcrumb {
    padding: var(--spacing-md) 0;
    background-color: var(--light-color);
    border-bottom: 1px solid #eee;
}

.breadcrumb ul {
    display: flex;
    align-items: center;
}

.breadcrumb li {
    margin-right: var(--spacing-sm);
    font-size: 0.95rem;
}

.breadcrumb li:after {
    content: '/';
    margin-left: var(--spacing-sm);
    color: #999;
}

.breadcrumb li:last-child:after {
    display: none;
}

.breadcrumb a {
    color: var(--text-color);
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: var(--primary-color);
}

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

/* 主页样式 */
.hero {
    height: 80vh;
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.3)), 
                url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
    display: flex;
    align-items: center;
    text-align: center;
    color: white;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

.hero h1 {
    color: white;
    font-size: 3.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
}

/* 产品分类概览 */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.category-card {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.12);
}

.category-img {
    height: 200px;
    overflow: hidden;
}

.category-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.category-info {
    padding: var(--spacing-md);
}

.category-info h3 {
    margin-bottom: var(--spacing-sm);
}

/* 特色区域 */
.features {
    background-color: var(--light-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-md);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

/* 产品展示页 */
.products-page h1, .about-page h1, .contact-page h1 {
    text-align: center;
}

.product-section {
    margin-bottom: var(--spacing-lg);
    padding-top: var(--spacing-lg);
}

.product-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

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

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.12);
}

.product-img {
    height: 220px;
    overflow: hidden;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.product-info {
    padding: var(--spacing-md);
}

.product-info h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
}

.product-price {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
    margin: var(--spacing-md) 0;
}

/* 关于页面 */
.about-intro {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.about-img {
    flex: 1;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

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

.about-text {
    flex: 1;
}

.mission-vision {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.mission, .vision {
    background-color: var(--light-color);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.value-item {
    text-align: center;
    padding: var(--spacing-md);
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.value-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.team-member {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.member-img {
    height: 250px;
    overflow: hidden;
}

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

.member-info {
    padding: var(--spacing-md);
}

.position {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: var(--spacing-lg) auto 0;
}

.timeline:before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background-color: var(--secondary-color);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline-year {
    flex: 0 0 100px;
    background-color: var(--primary-color);
    color: white;
    padding: 10px 15px;
    border-radius: var(--border-radius);
    text-align: center;
    font-weight: bold;
    z-index: 1;
}

.timeline-content {
    flex: 1;
    padding: var(--spacing-md);
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin: 0 var(--spacing-md);
}

/* 联系页面 */
.contact-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.contact-info {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
}

.contact-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: var(--spacing-md);
    min-width: 25px;
}

.contact-details h3 {
    margin-bottom: 5px;
    font-size: 1.2rem;
}

.contact-form-section {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.map-section {
    margin-top: var(--spacing-lg);
}

.map-container {
    margin-top: var(--spacing-md);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.map-placeholder {
    display: flex;
    flex-direction: column;
}

.map-info {
    padding: var(--spacing-lg);
    background-color: var(--light-color);
}

.map-image {
    height: 300px;
    overflow: hidden;
}

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

.faq-section {
    margin-top: var(--spacing-lg);
}

.faq-item {
    border-bottom: 1px solid #eee;
    margin-bottom: var(--spacing-md);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    cursor: pointer;
}

.faq-question h3 {
    margin-bottom: 0;
    font-size: 1.2rem;
}

.faq-answer {
    padding: 0 var(--spacing-md) var(--spacing-md);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

/* 页脚 */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: var(--spacing-lg) 0;
}

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

.footer-section h3 {
    color: white;
    margin-bottom: var(--spacing-md);
    font-size: 1.3rem;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #ccc;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.contact-info li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 10px;
}

.contact-info i {
    margin-right: 10px;
    color: var(--secondary-color);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-links a {
    color: white;
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--secondary-color);
}

.copyright {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid #444;
    color: #aaa;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-intro {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    nav ul {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: white;
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-lg) 0;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
        z-index: 999;
    }
    
    nav ul.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    nav li {
        margin: var(--spacing-md) 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .timeline:before {
        left: 30px;
    }
    
    .timeline-item {
        flex-direction: row !important;
    }
    
    .timeline-year {
        flex: 0 0 80px;
        margin-right: var(--spacing-md);
    }
    
    .timeline-content {
        margin: 0;
    }
}

@media (max-width: 576px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .map-placeholder {
        flex-direction: column;
    }
    
    .map-info, .map-image {
        width: 100%;
    }
}