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

body {
    font-family: "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    background-color: #f5f8fa;
    color: #333;
    line-height: 1.6;
    padding-top: 70px; /* 为固定header留出空间 */
}

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

/* Header导航栏 */
.header {
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 70px;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo区域 */
.header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-logo img {
    height: 40px;
    width: auto;
}

.company-name {
    font-size: 18px;
    font-weight: 600;
    color: #1e80ff;
    letter-spacing: 0.5px;
}

/* 导航菜单 */
.header-nav {
    display: flex;
    align-items: center;
    gap: 40px;
    flex: 1;
    justify-content: center;
    margin: 0 40px;
}

.nav-item {
    font-size: 15px;
    color: #333;
    cursor: default;
    padding: 8px 0;
    transition: color 0.3s ease;
    white-space: nowrap;
}

.nav-item:hover {
    color: #1e80ff;
}

/* 右侧操作区 */
.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.phone-number {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #1e80ff;
    font-size: 16px;
    font-weight: 500;
}

.phone-icon {
    font-size: 18px;
}

.phone-text {
    letter-spacing: 0.5px;
}

/* 按钮样式 */
.btn-console,
.btn-login {
    padding: 8px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    white-space: nowrap;
    opacity: 0.9;
}

.btn-console {
    background: #e8f4ff;
    color: #1e80ff;
}

.btn-login {
    background: linear-gradient(135deg, #4a9eff 0%, #1e80ff 100%);
    color: white;
}

/* Banner横幅 */
.banner {
    position: relative;
    background: linear-gradient(135deg, #e8f4ff 0%, #f0f8ff 100%);
    overflow: hidden;
}

.banner-content {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.banner-bg {
    max-width: 50%;
    height: auto;
    opacity: 0.9;
}

.banner-text {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #1e80ff;
    z-index: 10;
    width: 100%;
    padding: 0 20px;
}

.banner-text h1 {
    font-size: 42px;
    font-weight: 600;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(255, 255, 255, 0.8);
}

.banner-text p {
    font-size: 20px;
    color: #0056d6;
    text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.8);
}

/* 公司简介 */
.about {
    padding: 80px 0;
    background: white;
}

.section-title {
    font-size: 36px;
    color: #1e80ff;
    text-align: center;
    margin-bottom: 50px;
    font-weight: 400;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #1e80ff, #0056d6);
    border-radius: 2px;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    font-size: 16px;
    line-height: 2;
    color: #555;
    margin-bottom: 20px;
    text-align: justify;
}

.about-image {
    text-align: center;
}

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

/* 核心服务 */
.services {
    padding: 80px 0;
    background: linear-gradient(to bottom, #f5f8fa 0%, #e8f4ff 100%);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
}

.service-card {
    background: white;
    padding: 30px 20px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(30, 128, 255, 0.2);
}

.service-icon {
    font-size: 48px;
    margin-bottom: 18px;
}

.service-card h3 {
    font-size: 18px;
    color: #1e80ff;
    margin-bottom: 15px;
    font-weight: 500;
}

.service-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
    flex: 1;
}

/* 合作伙伴 */
.partners {
    padding: 80px 0;
    background: white;
}

.partners-content {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px 0;
}

.partners-image {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 底部信息 */
footer {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 40px 0;
    border-top: 3px solid #1e80ff;
}

.footer-content {
    text-align: center;
    font-size: 14px;
    line-height: 2.2;
}

.footer-content p {
    margin: 8px 0;
}

.footer-content a {
    color: #3498db;
    text-decoration: none;
    margin: 0 5px;
    transition: color 0.3s ease;
}

.footer-content a:hover {
    color: #5dade2;
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .header-nav {
        gap: 25px;
        margin: 0 20px;
    }

    .nav-item {
        font-size: 14px;
    }
}

@media (max-width: 968px) {
    .header-nav {
        display: none;
    }

    .header-actions {
        gap: 10px;
    }

    .phone-number {
        font-size: 14px;
    }

    .btn-console,
    .btn-login {
        padding: 6px 15px;
        font-size: 13px;
    }

    .banner-text h1 {
        font-size: 32px;
    }

    .banner-text p {
        font-size: 16px;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .service-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .service-card {
        padding: 25px 15px;
    }

    .service-card h3 {
        font-size: 16px;
    }

    .service-card p {
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    .header {
        height: 60px;
    }

    body {
        padding-top: 60px;
    }

    .header-container {
        padding: 0 15px;
    }

    .header-logo img {
        height: 32px;
    }

    .company-name {
        font-size: 16px;
    }

    .phone-number {
        display: none;
    }

    .banner-content {
        padding: 60px 20px;
    }

    .banner-text h1 {
        font-size: 24px;
    }

    .banner-text p {
        font-size: 14px;
    }

    .section-title {
        font-size: 28px;
    }

    .about-text p {
        font-size: 14px;
    }

    .service-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .service-card {
        padding: 25px 20px;
    }

    .service-card h3 {
        font-size: 18px;
    }

    .service-card p {
        font-size: 14px;
        line-height: 1.7;
    }

    .footer-content {
        font-size: 12px;
    }
}