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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: rgba(0, 0, 0, 0.85);
    background-color: #f0f2f5;
}

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

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #333;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #ff6b35;
}

/* 导航栏样式 */
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.09);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 12px 0;
}

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

.logo {
    display: flex;
    flex-direction: column;
}

.logo-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-mark {
    width: 52px;
    height: 52px;
    object-fit: contain;
    flex-shrink: 0;
}

.logo-copy {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.logo-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: #0f172a;
    line-height: 1.2;
    white-space: nowrap;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    color: #ff6b35;
    background: linear-gradient(45deg, #ff6b35, #ff8e53);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.3;
    white-space: nowrap;
}

.logo-sub {
    font-size: 0.9rem;
    color: #333;
    margin-top: 2px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: rgba(0, 0, 0, 0.65);
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s;
    padding: 8px 16px;
    border-radius: 4px;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #ff6b35;
    background-color: #fff3eb;
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 16px;
    right: 16px;
    height: 2px;
    background: #ff6b35;
}

.nav-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #333;
}

/* 首页横幅 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
    margin-top: 70px;
    overflow: hidden;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

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

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7));
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    padding: 0 20px;
}

.hero h2 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s;
    margin: 0 8px;
    border: 1px solid transparent;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(45deg, #ff6b35, #ff8e53);
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255, 107, 53, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #333;
}

/* 关于我们 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: rgba(0, 0, 0, 0.85);
    font-weight: 600;
}

.about-text p {
    margin-bottom: 20px;
    color: rgba(0, 0, 0, 0.65);
    line-height: 1.8;
}

.stats {
    display: flex;
    gap: 24px;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
    background: white;
    padding: 24px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.09);
    flex: 1;
}

.stat-item h4 {
    font-size: 2.5rem;
    color: #ff6b35;
    margin-bottom: 5px;
    font-weight: 600;
}

.stat-item p {
    color: rgba(0, 0, 0, 0.65);
    font-size: 0.9rem;
    margin: 0;
}

.about-image .image-placeholder {
    background: linear-gradient(135deg, #ff6b35, #ff8e53);
    height: 300px;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
}

.image-placeholder i {
    font-size: 5rem;
    margin-bottom: 20px;
}

.image-placeholder p {
    font-size: 1.2rem;
    font-weight: 500;
}

/* 解决方案 */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.solution-card {
    background: white;
    padding: 24px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.09);
    text-align: center;
    transition: all 0.3s;
    border: 1px solid #f0f0f0;
}

.solution-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.solution-icon {
    font-size: 3rem;
    color: #ff6b35;
    margin-bottom: 20px;
}

.solution-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #333;
}

.solution-card p {
    color: #666;
    line-height: 1.6;
}

/* 产品中心 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.09);
    transition: all 0.3s;
    border: 1px solid #f0f0f0;
}

.product-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.product-image {
    background: linear-gradient(135deg, #ff6b35, #ff8e53);
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.product-image i {
    font-size: 5rem;
}

.product-card h3 {
    padding: 20px 20px 10px;
    font-size: 1.5rem;
    color: #333;
}

.product-card p {
    padding: 0 20px;
    color: #666;
    margin-bottom: 20px;
}

.product-features {
    padding: 0 20px;
    list-style: none;
    margin-bottom: 20px;
}

.product-features li {
    margin-bottom: 8px;
    color: rgba(0, 0, 0, 0.65);
    display: flex;
    align-items: center;
}

.product-features i {
    color: #52c41a;
    margin-right: 8px;
    font-size: 0.8rem;
}

.btn-product {
    display: block;
    margin: 0 20px 20px;
    padding: 10px 20px;
    background: #ff6b35;
    color: white;
    text-decoration: none;
    text-align: center;
    border-radius: 5px;
    transition: background 0.3s;
}

.btn-product:hover {
    background: #ff8e53;
}

/* 联系我们 */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h3 {
    font-size: 1.6rem;
    margin-bottom: 24px;
    color: rgba(0, 0, 0, 0.85);
    font-weight: 600;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 16px;
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
}

.contact-item i {
    color: #ff6b35;
    font-size: 1.2rem;
    margin-right: 15px;
    margin-top: 5px;
    flex-shrink: 0;
}

.contact-item p {
    color: rgba(0, 0, 0, 0.65);
    line-height: 1.6;
    margin: 0;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 16px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    font-size: 1rem;
    transition: all 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #ff6b35;
}

.contact-form button {
    width: 100%;
    padding: 15px;
    background: linear-gradient(45deg, #ff6b35, #ff8e53);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.contact-form button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255, 107, 53, 0.3);
}

/* 产品详情页面 */
.product-detail {
    padding: 120px 0 80px;
}

.breadcrumb {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 30px;
}

.breadcrumb a {
    color: #ff6b35;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.product-header {
    margin-bottom: 40px;
}

.product-header h1 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 10px;
}

.product-subtitle {
    font-size: 1.2rem;
    color: #666;
}

.product-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.product-image-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.product-main-image {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.product-image-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.gallery-image {
    width: 100%;
    border-radius: 4px;
    cursor: pointer;
    transition: transform 0.3s;
}

.gallery-image:hover {
    transform: scale(1.05);
}

.product-info h2 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 20px;
    margin-top: 30px;
}

.product-info p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.feature-list {
    list-style: none;
    margin-bottom: 30px;
}

.feature-list li {
    margin-bottom: 10px;
    padding-left: 30px;
    position: relative;
    color: #666;
    line-height: 1.6;
}

.feature-list i {
    position: absolute;
    left: 0;
    top: 5px;
    color: #ff6b35;
    font-size: 1.2rem;
}

.tech-specs {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 30px;
}

.tech-specs th,
.tech-specs td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
}

.tech-specs th {
    background-color: #f9f9f9;
    font-weight: 600;
    color: #333;
}

.tech-specs tr:hover {
    background-color: #f5f5f5;
}

.application-list {
    list-style: none;
    margin-bottom: 30px;
}

.application-list li {
    margin-bottom: 10px;
    padding-left: 30px;
    position: relative;
    color: #666;
}

.application-list i {
    position: absolute;
    left: 0;
    top: 5px;
    color: #ff6b35;
    font-size: 1.2rem;
}

.contact-cta {
    background: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    margin-top: 40px;
}

.contact-cta h2 {
    margin-top: 0;
}

/* 页脚 */
.footer {
    background: #001529;
    color: white;
    padding: 48px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 32px;
}

.footer-logo h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
    color: #ff6b35;
    font-weight: 600;
}

.footer-logo-image {
    width: 72px;
    height: 72px;
    object-fit: contain;
    margin-bottom: 14px;
    display: block;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.6;
}

.footer-links h4,
.footer-social h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    transition: all 0.3s;
    display: block;
    padding: 4px 0;
}

.footer-links a:hover {
    color: #ff6b35;
    padding-left: 8px;
}

.social-icons {
    display: flex;
    gap: 12px;
}

.qr-card {
    display: inline-flex;
    flex-direction: column;
    gap: 12px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    max-width: 220px;
}

.qr-image {
    width: 180px;
    height: 180px;
    object-fit: cover;
    background: #fff;
    border-radius: 12px;
}

.qr-card p {
    margin: 0;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.9rem;
    line-height: 1.7;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: white;
    font-size: 1rem;
    transition: all 0.3s;
}

.social-icons a:hover {
    background: #ff6b35;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.8rem;
}

.footer-bottom p {
    margin-bottom: 8px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero h2 {
        font-size: 2.8rem;
    }
    
    .hero p {
        font-size: 1.3rem;
    }
    
    .about-content,
    .contact-content,
    .product-content {
        grid-template-columns: 1fr;
    }
    
    .logo-text {
        font-size: 1.2rem;
    }

    .logo-name {
        font-size: 1rem;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding-top: 50px;
        transition: left 0.3s;
        gap: 20px;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .logo-text {
        font-size: 1rem;
        white-space: normal;
        line-height: 1.2;
    }

    .logo-mark {
        width: 44px;
        height: 44px;
    }

    .logo-name {
        font-size: 0.95rem;
    }
    
    .hero h2 {
        font-size: 2.2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .product-image-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }

    .logo-brand {
        gap: 10px;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .btn-primary,
    .btn-secondary {
        display: block;
        margin: 10px auto;
        max-width: 200px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .product-image-gallery {
        grid-template-columns: 1fr;
    }
    
    .product-header h1 {
        font-size: 2rem;
    }
}