/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    color: #333;
    line-height: 1.6;
    background-color: #f8f9fc;
}

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

/* 顶部导航栏 */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 5%;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 999;
}

.logo-img {
    height: 45px;
    width: auto;
}

.nav-menu a {
    color: #333;
    text-decoration: none;
    margin-left: 30px;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: #2563eb;
}

/* ========== 首页左文右图 Banner 样式 ========== */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
    padding: 80px 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.hero-text {
    flex: 1;
}

.hero-text h1 {
    font-size: 48px;
    color: #2563eb;
    margin-bottom: 18px;
}

.hero-slogan {
    font-size: 20px;
    font-weight: 500;
    color: #444;
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 16px;
    color: #666;
    line-height: 1.7;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 12px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-white {
    background: #fff;
    color: #2563eb;
    border: 1px solid #2563eb;
}

.btn-blue {
    background: #2563eb;
    color: #fff;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.hero-img {
    flex: 1;
}

.hero-img img {
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
    border-radius: 12px;
}

/* About 关于我们板块 */
.about-section {
    padding: 70px 0;
    background: #fff;
    text-align: left;
}

.about-section h2 {
    font-size: 32px;
    color: #2563eb;
    margin-bottom: 25px;
    text-align: center;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 17px;
    color: #555;
    line-height: 1.8;
    text-align: justify;
    text-indent: 2em;
}

/* Services 四宫格卡片业务板块 */
.services-section {
    padding: 80px 0;
    background: #f7f8fc;
    text-align: center;
}

.services-section h2 {
    font-size: 32px;
    color: #333;
    margin-bottom: 50px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.service-card {
    background: #ffffff;
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    position: relative;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: #f0f5ff;
    border-radius: 50%;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon img {
    width: 30px;
    height: auto;
}

.service-card h3 {
    font-size: 18px;
    color: #111827;
    margin-bottom: 18px;
    font-weight: 600;
}

.service-card p {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.7;
    margin-bottom: 8px;
}

.read-more {
    display: inline-block;
    margin-top: 20px;
    color: #2563eb;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding-bottom: 6px;
    border-bottom: 2px solid #2563eb;
}

/* Contact 联系我们板块 美化样式 */
.contact-section {
    padding: 70px 0;
    background: #475fb0;
    color: #ffffff;
    text-align: center;
      /* 底部增加白色分隔线 */
    border-bottom: 2px solid #ffffff;
}

.contact-section h2 {
    font-size: 36px;
    margin-bottom: 30px;
    font-weight: 600;
}

.contact-info p {
    font-size: 18px;
    line-height: 2;
    margin-bottom: 10px;
}

.contact-info strong {
    font-weight: 600;
    margin-right: 8px;
}

.mail-link {
    color: #ffffff;
    text-decoration: underline;
}

/* 底部页脚样式 */
.footer {
    padding: 25px 0;
    background: #475fb0;
    color: #e0e7ff;
    text-align: center;
    font-size: 15px;
}

/* 手机端全页面自适应 */
@media (max-width: 768px) {
    .hero-section {
        flex-direction: column;
        text-align: center;
        padding: 50px 5%;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .nav-menu a {
        margin-left: 15px;
    }

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