/* 全局样式和变量 */
:root {
    --primary-color: #0066cc;
    --secondary-color: #004d99;
    --accent-color: #00aaff;
    --light-color: #f5f9ff;
    --dark-color: #333;
    --text-color: #444;
    --transition: all 0.3s ease;
}

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

/* 隐藏滚动条但保持滚动功能 */
/* Chrome, Safari, Edge */
::-webkit-scrollbar {
    display: none;
}

/* Firefox */
* {
    scrollbar-width: none;
}

/* IE */
* {
    -ms-overflow-style: none;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

h1, h2, h3 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
}

h2:after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    margin: 15px auto 0;
    border-radius: 2px;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
}

section {
    padding: 80px 0;
}

/* 导航栏样式 */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links {
    display: flex;
}

.nav-links a {
    color: var(--dark-color);
    text-decoration: none;
    margin-left: 30px;
    font-weight: 500;
    transition: var(--transition);
}

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

/* 英雄区样式 */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
    padding: 150px 0 100px;
    margin-top: 60px;
    position: relative;
    overflow: hidden;
}

.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"><rect fill="rgba(255,255,255,0.03)" width="100" height="100"/></svg>');
    opacity: 0.1;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: white;
    letter-spacing: -1px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.hero-description {
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

.hero-description p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 0.5rem;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.cta-button {
    display: inline-block;
    background-color: white;
    color: var(--primary-color);
    padding: 15px 35px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    font-size: 1.1rem;
}

.cta-button.secondary {
    background-color: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.cta-button.secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: white;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-description p {
        font-size: 1rem;
        padding: 0 20px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .cta-button {
        padding: 12px 30px;
        font-size: 1rem;
    }
}

/* 产品区域样式 */
.products {
    background-color: var(--light-color);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.product-card {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.product-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.product-card h3 {
    margin-bottom: 15px;
}

/* 解决方案区域样式 */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.solution-card {
    background-color: var(--light-color);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* 联系我们区域样式 */
.contact {
    background-color: var(--light-color);
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    background-color: white;
    padding: 20px 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    min-width: 300px;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: 15px;
}

/* 页脚样式 */
footer {
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 30px 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .product-grid, .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-item {
        width: 100%;
    }
    
    .navbar .container {
        flex-direction: column;
    }
    
    .nav-links {
        margin-top: 15px;
        justify-content: center;
    }
    
    .nav-links a {
        margin: 0 10px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    section {
        padding: 60px 0;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: 10px 25px;
    }
}