/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #ff6b35;
    --secondary-color: #e84855;
    --accent-color: #ffc107;
    --dark-color: #212529;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
    --white-color: #ffffff;
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    --gradient-secondary: linear-gradient(135deg, #ff9a9e 0%, #fad0c4 100%);
    --gradient-accent: linear-gradient(135deg, #ffc107 0%, #ff9a0e 100%);
    --gradient-dark: linear-gradient(135deg, #3a3a3a 0%, #1a1a1a 100%);
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    outline: none;
}

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

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(232, 72, 85, 0.3);
}

.secondary-btn {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.secondary-btn:hover {
    background: var(--gradient-primary);
    color: var(--white-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(232, 72, 85, 0.3);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-header h2 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header p {
    font-size: 16px;
    color: var(--gray-color);
    max-width: 600px;
    margin: 0 auto;
}

/* 顶部通知栏 */
.top-notice {
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 10px 0;
    text-align: center;
}

/* 导航栏样式 */
.navbar {
    background-color: var(--white-color);
    box-shadow: var(--shadow);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo img {
    width: 180px;
}

.nav-menu ul {
    display: flex;
}

.nav-menu li {
    margin-left: 30px;
}

.nav-menu a {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark-color);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

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

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

.user-actions {
    display: flex;
    align-items: center;
}

.user-actions a {
    margin-left: 20px;
    font-size: 18px;
    color: var(--dark-color);
    position: relative;
}

.cart-count {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 20px;
    height: 20px;
    background-color: var(--primary-color);
    color: var(--white-color);
    border-radius: 50%;
    font-size: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mobile-menu-btn {
    display: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--dark-color);
    margin: 5px 0;
    transition: var(--transition);
}

/* 英雄区域样式 */
.hero {
    position: relative;
    height: 500px;
    overflow: hidden;
}

.hero-slider {
    width: 100%;
    height: 100%;
    position: relative;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.5s ease;
    display: flex;
    align-items: center;
}

.hero-slide.active {
    opacity: 1;
}

.hero-content {
    max-width: 500px;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.hero-content h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.2;
}

.hero-content h1 span {
    color: var(--primary-color);
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 25px;
    color: var(--gray-color);
}

.slider-controls {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 10;
}

.slider-controls button {
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    border: none;
    font-size: 20px;
    color: var(--dark-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    justify-content: center;
    align-items: center;
}

.slider-controls button:hover {
    background-color: var(--white-color);
    color: var(--primary-color);
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 10px;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background-color: var(--primary-color);
    width: 30px;
    border-radius: 6px;
}

/* 特色服务 */
.services {
    padding: 60px 0;
    background-color: var(--white-color);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.service-item {
    text-align: center;
    padding: 30px;
    background-color: #f5f5f5;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
    font-size: 24px;
    color: var(--white-color);
}

.service-item h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.service-item p {
    font-size: 14px;
    color: var(--gray-color);
}

/* 商品分类 */
.categories {
    padding: 100px 0;
    background: var(--gradient-secondary);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.category-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    height: 300px;
    box-shadow: var(--shadow);
}

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

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

.category-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: var(--white-color);
    transition: var(--transition);
}

.category-item:hover .category-overlay {
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
}

.category-overlay h3 {
    font-size: 22px;
    margin-bottom: 5px;
}

/* 商品展示 */
.products {
    padding: 100px 0;
}

.hot-products {
    background-color: var(--white-color);
}

.new-arrivals {
    background-color: #f9f9f9;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

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

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.product-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 5px 10px;
    border-radius: var(--border-radius);
    font-size: 12px;
    font-weight: 600;
    color: var(--white-color);
}

.product-badge.hot {
    background-color: var(--secondary-color);
}

.product-badge.new {
    background-color: var(--accent-color);
}

.product-image {
    height: 250px;
    overflow: hidden;
}

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

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

.product-info {
    padding: 20px;
}

.product-category {
    font-size: 12px;
    color: var(--gray-color);
    margin-bottom: 10px;
    display: block;
}

.product-info h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.product-info h3 a:hover {
    color: var(--primary-color);
}

.product-rating {
    margin-bottom: 15px;
    font-size: 14px;
    color: #ffc107;
}

.product-rating span {
    color: var(--gray-color);
    margin-left: 5px;
}

.product-price {
    margin-bottom: 20px;
}

.original-price {
    font-size: 14px;
    color: var(--gray-color);
    text-decoration: line-through;
    margin-right: 10px;
}

.current-price {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
}

.add-to-cart {
    width: 100%;
    padding: 12px;
    background-color: #f5f5f5;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    color: var(--dark-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    justify-content: center;
    align-items: center;
}

.add-to-cart i {
    margin-right: 5px;
}

.add-to-cart:hover {
    background: var(--gradient-primary);
    color: var(--white-color);
}

.view-more {
    text-align: center;
}

/* 行业资讯 */
.news {
    padding: 100px 0;
    background-color: var(--white-color);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

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

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.news-image {
    height: 200px;
    overflow: hidden;
}

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

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

.news-info {
    padding: 20px;
}

.news-date {
    font-size: 14px;
    color: var(--gray-color);
    margin-bottom: 10px;
    display: block;
}

.news-info h3 {
    font-size: 18px;
    margin-bottom: 15px;
}

.news-info h3 a:hover {
    color: var(--primary-color);
}

.news-info p {
    font-size: 14px;
    color: var(--gray-color);
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.read-more {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
}

.read-more i {
    margin-left: 5px;
    transition: var(--transition);
}

.read-more:hover i {
    transform: translateX(5px);
}

/* 关于我们 */
.about {
    padding: 100px 0;
    background: var(--gradient-dark);
    color: var(--white-color);
}

.about .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
}

.about-content {
    flex: 1;
    min-width: 300px;
    margin-bottom: 50px;
}

.about .section-header h2::after {
    background: var(--gradient-accent);
}

.about .section-header p {
    color: rgba(255, 255, 255, 0.7);
}

.about-content p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.7);
}

.about-stats {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.stat-item {
    flex: 1;
    min-width: 120px;
    text-align: center;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
}

.stat-item .counter {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-color);
    display: block;
    margin-bottom: 10px;
}

.stat-item p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

/* 品牌合作 */
.brands {
    padding: 80px 0;
    background-color: var(--white-color);
}

.brand-slider {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 40px;
}

.brand-slide img {
    height: 80px;
    opacity: 0.6;
    transition: var(--transition);
}

.brand-slide img:hover {
    opacity: 1;
    transform: scale(1.05);
}

/* 页脚样式 */
.footer {
    background: var(--gradient-dark);
    color: var(--white-color);
    padding: 80px 0 20px;
}

.footer-top {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 50px;
}

.footer-col {
    flex: 1;
    min-width: 200px;
    margin-bottom: 30px;
    padding: 0 20px;
}

.footer-logo img {
    width: 180px;
    margin-bottom: 20px;
}

.footer-logo p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--gradient-primary);
    transform: translateY(-3px);
}

.footer-col h3 {
    font-size: 18px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--gradient-primary);
}

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

.footer-col ul li a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

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

.footer-col ul li i {
    margin-right: 10px;
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

/* 回到顶部按钮 */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    border: none;
    color: var(--white-color);
    font-size: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

#back-to-top:hover {
    transform: translateY(-5px);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 36px;
    }

    .about-stats {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--white-color);
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        z-index: 1001;
        transition: var(--transition);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu ul {
        flex-direction: column;
        text-align: center;
    }

    .nav-menu li {
        margin: 15px 0;
    }

    .mobile-menu-btn {
        display: block;
        z-index: 1002;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .user-actions {
        display: none;
    }

    .hero-content h1 {
        font-size: 28px;
    }

    .hero-content p {
        font-size: 16px;
    }

    .section-header h2 {
        font-size: 28px;
    }

    .product-grid,
    .category-grid,
    .news-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        height: 400px;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-content h1 {
        font-size: 24px;
    }

    .section-header h2 {
        font-size: 24px;
    }

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

    .footer-col {
        padding: 0;
    }

    #back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}