/* 基础样式 */
:root {
    --primary-color: #FF6B35;
    --secondary-color: #004E89;
    --dark-color: #2E2E2E;
    --light-color: #FFFFFF;
    --gray-color: #F5F5F5;
    --text-color: #333333;
    --text-light: #777777;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 20px 0;
    backdrop-filter: blur(10px);
}

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

.logo img {
    height: 40px;
}

.nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

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

.nav-links a:hover::after {
    width: 100%;
}

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

/* 英雄区域 */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.5)), url('/assets/images/main.jpeg') no-repeat center center;
    background-size: cover;
    color: var(--light-color);
    display: flex;
    align-items: center;
    text-align: center;
    margin-top: 80px;
}

.hero-content {
    width: 100%;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    font-weight: 300;
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 40px;
    font-weight: 300;
}

/* 按钮样式 */
.cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--light-color);
    padding: 15px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background-color: #e05a2b;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* 产品部分 */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 60px;
    color: var(--dark-color);
    animation: fadeInUp 0.6s ease-out forwards;
}

.products-section {
    padding: 100px 0;
    background-color: var(--gray-color);
}

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

.product-card {
    background-color: var(--light-color);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    padding: 30px;
    text-align: center;
    position: relative;
    border: 1px solid rgba(0, 0, 0, 0.1);
    animation: fadeInUp 0.6s ease-out forwards;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), transparent);
    opacity: 0;
    transition: var(--transition);
}

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

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.product-image {
    height: 200px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image img {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
}

.product-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.product-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.learn-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.learn-more:hover {
    color: #e05a2b;
}

.spec-item {
    padding: 8px;
    margin: 5px 0;
    background-color: var(--gray-color);
    border-radius: 5px;
    transition: var(--transition);
}

.spec-item:hover {
    transform: translateX(10px);
    background-color: rgba(255, 107, 53, 0.1);
}

/* 解决方案部分优化 */
.solutions-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.solutions-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.solutions-tabs button {
    padding: 12px 24px;
    border: none;
    border-radius: 30px;
    background: white;
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.solutions-tabs button.active {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.solution-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    animation: fadeInUp 0.6s ease-out forwards;
}

.solution-features {
    list-style: none;
    padding: 0;
}

.solution-features li {
    padding: 10px 0;
    display: flex;
    align-items: center;
}

.solution-features li::before {
    content: '✦';
    color: var(--primary-color);
    margin-right: 10px;
}

/* 客户部分 */
.clients-section {
    padding: 80px 0;
    background-color: var(--light-color);
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 40px;
    align-items: center;
}

.client-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 80px;
}

.client-logo:hover {
    filter: grayscale(0);
    opacity: 1;
}

.client-logo img {
    max-height: 100%;
    max-width: 100%;
}

/* 白皮书部分 */
.whitepaper-section {
    padding: 100px 0;
    background-color: var(--secondary-color);
    color: var(--light-color);
}

.whitepaper-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.whitepaper-content h2 {
    font-size: 2rem;
    font-weight: 300;
    margin-bottom: 20px;
}

.whitepaper-content p {
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.whitepaper-section form {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.whitepaper-section input {
    padding: 15px 20px;
    border-radius: 30px;
    border: none;
    flex: 1;
    min-width: 250px;
    font-size: 1rem;
}

/* 页脚 */
.footer {
    background-color: var(--dark-color);
    color: var(--light-color);
    padding: 60px 0 30px;
}

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

.footer-logo img {
    height: 50px;
    margin-bottom: 20px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
}

.links-column h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-weight: 500;
}

.links-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.links-column li {
    margin-bottom: 10px;
}

.links-column a {
    color: #bbbbbb;
    text-decoration: none;
    transition: color 0.3s;
}

.links-column a:hover {
    color: var(--light-color);
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #bbbbbb;
    font-size: 0.9rem;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
    }
    
    .nav-links {
        margin-top: 20px;
    }
    
    .nav-links li {
        margin: 0 15px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.2rem;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-links {
        margin-top: 30px;
    }
}