* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}

body {
    color: #333;
    line-height: 1.6;
    background: #f8f9fa;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* 头部和导航 */
header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

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

.logo img {
    height: 36px;
}

.logo-text {
    font-size: 22px;
    font-weight: bold;
    color: #1a56db;
    margin-left: 10px;
}

.nav-links {
    display: flex;
}

.nav-links li {
    margin: 0 15px;
    position: relative;
}

.nav-links a {
    color: #333;
    font-weight: 500;
    padding: 5px 0;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #1a56db;
}

.nav-links a.active {
    color: #1a56db;
    border-bottom: 2px solid #1a56db;
}

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

.btn {
    padding: 8px 20px;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.3s;
    cursor: pointer;
}

.btn-outline {
    border: 1px solid #1a56db;
    color: #1a56db;
    margin-right: 15px;
}

.btn-outline:hover {
    background: #1a56db;
    color: white;
}

.btn-primary {
    background: #1a56db;
    color: white;
}

.btn-primary:hover {
    background: #0c45c7;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(120deg, #1a56db, #0c45c7);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.hero-buttons .btn {
    padding: 12px 30px;
    font-size: 1.1rem;
}

.btn-white {
    background: white;
    color: #1a56db;
}

.btn-white:hover {
    background: #f8f9fa;
}

.btn-transparent {
    background: transparent;
    border: 1px solid white;
    color: white;
}

.btn-transparent:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* 产品特性 */
.features {
    padding: 80px 0;
    background: white;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.2rem;
    color: #1a237e;
    margin-bottom: 15px;
}

.section-title p {
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

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

.feature-card {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.feature-icon {
    font-size: 2.5rem;
    color: #1a56db;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #1a237e;
}

/* 解决方案 */
.solutions {
    padding: 80px 0;
    background: #f8f9fa;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.solution-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.solution-img {
    height: 200px;
    background: linear-gradient(45deg, #1a56db, #0c45c7);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.solution-content {
    padding: 25px;
}

.solution-content h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #1a237e;
}

/* 客户案例 */
.cases {
    padding: 80px 0;
    background: white;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.case-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    transition: all 0.3s;
}

.case-item:hover {
    background: #1a56db;
    color: white;
    transform: scale(1.05);
}

/* CTA区域 */
.cta {
    background: linear-gradient(120deg, #1a56db, #0c45c7);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.cta h2 {
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.cta p {
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

/* 底部 */
footer {
    background: #1a237e;
    color: white;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 30px;
    height: 2px;
    background: #1a56db;
}

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

.footer-links a {
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 1;
    color: #4ade80;
}

.footer-bottom {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

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

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

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

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