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

:root {
    --primary-color: #1e3a8a;
    --secondary-color: #3b82f6;
    --accent-color: #f59e0b;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

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

.logo-svg {
    height: 48px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    transition: var(--transition);
}

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

.logo-png {
    height: 48px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    transition: var(--transition);
    object-fit: contain;
}

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

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(59, 130, 246, 0.1);
}

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    list-style: none;
    padding: 0.5rem 0;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
}

.dropdown-menu li a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

/* 语言切换按钮 */
.language-toggle {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    margin-right: 1rem;
}

.language-toggle:hover {
    background: var(--secondary-color);
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: var(--transition);
}

/* 首页Banner */
.hero {
    height: 100vh;
    position: relative;
    overflow: hidden;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.slide-content {
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 2rem;
    position: relative;
    z-index: 2;
}

.slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(115 116 120 /70%), rgba(76 96 127 / 60%));
    z-index: 1;
}

.slide:nth-child(1) {
    background-image: url('img/index-banner-1.jpg');
}

.slide:nth-child(2) {
    background-image: url('img/index-banner-2.png');
}

.slide:nth-child(3) {
    background-image: url('img/index-banner-3.jpg');
}

.slide.active {
    opacity: 1;
}

.slide-content {
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 2rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    white-space: nowrap;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.3s both;
}

.cta-button {
    display: inline-block;
    background: var(--accent-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    animation: fadeInUp 1s ease-out 0.6s both;
}

.cta-button:hover {
    background: #d97706;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 轮播点 */
.slider-dots {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
}

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

.dot.active {
    background: white;
    transform: scale(1.2);
}

/* 关于我们 */
.about-section {
    padding: 5rem 0;
    background: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

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

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

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

.about-text p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    color: var(--text-light);
}

.company-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-light);
    font-weight: 500;
}

.about-image {
    display: flex;
    justify-content: center;
}

.company-introduction-image {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

/* 产品展示 */
.products-section {
    padding: 5rem 0;
    background: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.product-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    text-align: center;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.product-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.product-description {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.feature-tag {
    background: var(--bg-light);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

/* 联系我们 */
.contact-section {
    padding: 5rem 0;
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

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

/* 联系表单 */
.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group label {
    position: absolute;
    left: 1rem;
    top: 1rem;
    color: var(--text-light);
    transition: var(--transition);
    pointer-events: none;
    background: white;
    padding: 0 0.25rem;
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -0.5rem;
    left: 0.75rem;
    font-size: 0.875rem;
    color: var(--primary-color);
}

.submit-btn {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

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

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

.footer-section h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

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

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

.footer-section ul li a {
    color: #9ca3af;
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-section ul li i {
    margin-right: 0.5rem;
    color: var(--accent-color);
}

.footer-description {
    color: #9ca3af;
    line-height: 1.6;
    margin-top: 1rem;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 1rem;
    text-align: center;
    color: #9ca3af;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding-top: 80px;
    }

    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        gap: 1rem;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: var(--bg-light);
        margin-top: 0.5rem;
    }

    .hamburger {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .company-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

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

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

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

    .product-hero {
        padding: 7rem 0;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 1rem;
    }

    .hero-title {
        font-size: 1.8rem;
        white-space: nowrap;
    }

    .container {
        padding: 0 1rem;
    }

    .product-card {
        padding: 1.5rem;
    }
}

@media (max-width: 360px) {
    body {
        padding-top: 60px;
    }

    .hero-title {
        font-size: 1.5rem;
        white-space: nowrap;
    }
}

/* 语言切换动画 */
[data-lang="en"] {
    font-family: 'Roboto', sans-serif;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* 产品链接样式 */
.product-link {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.product-link:hover {
    color: inherit;
    transform: translateY(-5px);
}

/* 产品详情页样式 */
.product-hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

/* 注塑挤出系统页面背景图 */
.injection-extrusion .product-hero {
    background: linear-gradient(rgba(30, 58, 138, 0.7), rgba(59, 130, 246, 0.7)), url('img/inject-header.png') center/cover no-repeat;
    background-blend-mode: overlay;
}


/* 包装输送系统页面背景图 */
.packaging-conveyor .product-hero {
    background: linear-gradient(rgba(30, 58, 138, 0.7), rgba(59, 130, 246, 0.7)), url('img/packaging-conveyor-header.png') center/cover no-repeat;
    /* background: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.6) 30%, rgba(0, 0, 0, 0.5) 70%, rgba(0, 0, 0, 0.6)), url('img/packaging-conveyor-header.png') center/cover no-repeat; */
    background-blend-mode: overlay;
}

/* 计量称重系统页面背景图 */
.weighing-system .product-hero {
    background: linear-gradient(rgba(30, 58, 138, 0.7), rgba(59, 130, 246, 0.7)), url('img/weighting-system-header.png') center/cover no-repeat;
    /* background: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.6) 30%, rgba(0, 0, 0, 0.5) 70%, rgba(0, 0, 0, 0.6)), url('img/packaging-conveyor-header.png') center/cover no-repeat; */
    background-blend-mode: overlay;
}

/* 注塑挤出系统页面背景图 */
.central-feeding .product-hero {
    background: linear-gradient(rgba(30, 58, 138, 0.7), rgba(59, 130, 246, 0.7)), url('img/central-feeding-header.png') center/cover no-repeat;
    background-blend-mode: overlay;
}


/* 金属异物检测系统页面背景图 */
.metal-detection .product-hero {
    background: linear-gradient(rgba(30, 58, 138, 0.7), rgba(59, 130, 246, 0.7)), url('img/metal-detection-header.png') center/cover no-repeat;
    background-blend-mode: overlay;
}

.product-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

/* 注塑挤出系统页面移除默认纹理 */
.injection-extrusion .product-hero::before {
    display: none;
}

/* 包装输送系统页面移除默认纹理 */
.packaging-conveyor .product-hero::before {
    display: none;
}

/* 计量称重系统页面移除默认纹理 */
.packaging-conveyor .product-hero::before {
    display: none;
}

/* 中央集中供料系统页面移除默认纹理 */
.central-feeding .product-hero::before {
    display: none;
}

/* 金属异物检测系统页面移除默认纹理 */
.metal-detection .product-hero::before {
    display: none;
}

.product-hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.product-hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.product-hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.product-hero-features {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.feature-badge {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.product-hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.product-image-placeholder {
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

/* 产品详情页内容 */
.product-details {
    padding: 5rem 0;
    background: var(--bg-light);
}

.product-content {
    max-width: 1200px;
    margin: 0 auto;
}

.product-description-section {
    margin-bottom: 4rem;
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.product-description-text {
    flex: 1;
}

.product-description-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
    margin-top: 1rem;
}

.product-description-image {
    /* flex: 1; */
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.product-description-image img {
    width: 100%;
    height: auto;
    display: block;
}

.product-specifications {
    margin-bottom: 4rem;
}

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

.spec-item {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: var(--transition);
}

.spec-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.spec-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.spec-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.product-features-section {
    margin-bottom: 4rem;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    gap: 1.5rem;
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.feature-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;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.feature-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.feature-content p {
    color: var(--text-muted);
    line-height: 1.6;
}

.product-applications {
    margin-bottom: 4rem;
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.application-item {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.application-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

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

.application-item span {
    font-weight: 500;
    color: var(--text-color);
}

/* 核心产品列表 */
.core-products-section {
    margin-bottom: 4rem;
}

.core-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.core-product-item {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    text-align: center;
}

.core-product-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

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

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

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

.image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.core-product-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1.5rem 1rem 0.5rem;
    color: var(--text-dark);
}

.core-product-description {
    color: var(--text-light);
    padding: 0 1rem 1.5rem;
    line-height: 1.6;
}

/* 产品联系咨询 */
.product-contact {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.contact-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-cta p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .product-hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .product-hero-title {
        font-size: 2.5rem;
    }

    .product-hero-subtitle {
        font-size: 1rem;
    }

    .product-hero-features {
        justify-content: center;
    }

    .product-description-section {
        flex-direction: column;
        gap: 2rem;
    }

    .specs-grid {
        grid-template-columns: 1fr;
    }

    .features-list {
        grid-template-columns: 1fr;
    }

    .feature-item {
        flex-direction: column;
        text-align: center;
    }

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

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

@media (max-width: 480px) {
    body {
        padding-top: 70px;
    }

    .product-hero {
        padding: 6rem 0;
    }

    .product-hero-title {
        font-size: 2rem;
    }

    .product-image-placeholder {
        width: 150px;
        height: 150px;
        font-size: 3rem;
    }



    .applications-grid {
        grid-template-columns: 1fr;
    }

    .spec-item,
    .feature-item,
    .application-item {
        padding: 1.5rem;
    }
}