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

body {
    font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
}

a:hover {
    color: #0066cc;
}

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

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
    position: relative;
    font-weight: 600;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #0066cc;
}

/* 导航栏 */
header {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 10px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    background-color: rgba(255, 255, 255, 0.98);
}

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

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

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo span {
    font-size: 18px;
    font-weight: 600;
    color: #333;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    font-size: 16px;
    font-weight: 500;
    padding: 5px 0;
    position: relative;
    color: #333;
}

nav ul li a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #0066cc;
    transition: width 0.3s ease;
}

nav ul li a:hover:after {
    width: 100%;
}

/* 主横幅 */
.hero {
    background-image: url('img/giant screen.png');
    background-size: cover;
    background-position: center;
    height: 600px;
    display: flex;
    align-items: center;
    color: #fff;
    text-align: center;
    padding-top: 80px;
    position: relative;
}

.hero:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
}

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

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
    letter-spacing: 1px;
}

.hero h2 {
    font-size: 32px;
    margin-bottom: 20px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

/* 能力部分 */
.capabilities {
    padding: 100px 0;
    background-color: #f9f9f9;
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    height: 400px;
}

.capability-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.capability-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.capability-card h3 {
    font-size: 22px;
    padding: 20px;
    text-align: center;
    background: #f5f5f5;
    margin: 0;
    color: #333;
}

.capability-card p {
    padding: 20px;
    font-size: 16px;
    color: #666;
    min-height: 120px;
    flex-grow: 1;
}

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

.capability-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

/* 解决方案 */
.solutions {
    padding: 100px 0;
    background-color: #fff;
}

.solutions-container {
    display: flex;
    align-items: center;
    gap: 50px;
}

.solutions-image {
    flex: 1;
    max-width: 45%;
}

.solutions-image img {
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    width: 100%;
}

.solutions-list {
    flex: 1;
    max-width: 55%;
}

.solution-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
    padding: 20px;
    border-radius: 10px;
    background: #f9f9f9;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.solution-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.solution-icon {
    margin-right: 20px;
    flex-shrink: 0;
}

.solution-icon img {
    width: 50px;
    height: 50px;
}

.solution-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #0066cc;
}

.solution-content p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

/* 帮助客户 */
.benefits {
    padding: 100px 0;
    background: url('img/Mask group.png') no-repeat center center;
    background-size: contain;
    position: relative;
}

.benefits .container {
    position: relative;
    z-index: 1;
}

.benefits .section-title {
    color: #333;
    margin-bottom: 60px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.benefit-card {
    background: #fff;
    padding: 35px 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    min-height: 250px;
}

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

.benefit-card h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #0066cc;
    font-weight: 600;
}

.benefit-card p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

.blue-card {
    background: #0066cc;
    color: #fff;
}

.blue-card h3,
.blue-card p {
    color: #fff;
}

/* 页脚 */
footer {
    background: #222;
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

footer p {
    font-size: 14px;
    letter-spacing: 0.5px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .capabilities-grid,
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solutions-container {
        flex-direction: column;
    }
    
    .solutions-image,
    .solutions-list {
        max-width: 100%;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero h2 {
        font-size: 24px;
    }
}

@media (max-width: 768px) {
    .capabilities-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    header .container {
        flex-direction: column;
    }
    
    .logo {
        margin-bottom: 15px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 5px 15px;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .hero h2 {
        font-size: 20px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 26px;
    }
}