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

body {
    font-family: 'Inter', sans-serif;
    background-color: #ffffff;
    color: #1E2A3A;
    line-height: 1.5;
    scroll-behavior: smooth;
}

/* 容器 */
.container {
    max-width: 61.8%;
    margin: 0 auto;
    padding: 0 24px;
}

/* 头部/导航栏 */
.header {
    background: #ffffff;
    box-shadow: 0 1px 0 rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
}
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
    flex-wrap: wrap;
}
.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #0A66C2, #2C9A8E);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.3px;
}
.logo p {
    font-size: 0.75rem;
    color: #5D6E85;
    letter-spacing: 0.5px;
}
.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}
.nav-links li a {
    text-decoration: none;
    font-weight: 500;
    color: #1E2A3A;
    transition: color 0.2s ease;
    font-size: 1rem;
}
.nav-links li a:hover,
.nav-links li a.active {
    color: #0A66C2;
}
/* 移动端菜单样式 - 响应式隐藏，简单处理 */
@media (max-width: 800px) {
    .navbar {
        flex-direction: column;
        gap: 12px;
    }
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
}

/* 按钮 */
.btn-primary {
    background: #0A66C2;
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-primary:hover {
    background: #084c91;
}
.btn-outline {
    background: transparent;
    border: 1.5px solid #0A66C2;
    color: #0A66C2;
    padding: 8px 22px;
    border-radius: 40px;
    font-weight: 600;
    transition: all 0.2s;
}
.btn-outline:hover {
    background: #0A66C2;
    color: white;
}

/* Hero 区域 */
.hero {
    background: linear-gradient(105deg, #F0F9FF 0%, #E8F4FD 100%);
    padding: 70px 0 90px;
}
.hero-grid {
    display: flex;
    align-items: center;
    gap: 48px;
    flex-wrap: wrap;
    justify-content: space-between;
}
.hero-content {
    flex: 1.2;
}
.hero-badge {
    background: rgba(10,102,194,0.1);
    display: inline-block;
    padding: 5px 16px;
    border-radius: 40px;
    font-size: 0.85rem;
    font-weight: 500;
    color: #0A66C2;
    margin-bottom: 20px;
}
.hero-content h2 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #0B2B42;
}
.hero-content p {
    font-size: 1.1rem;
    color: #2C3F5C;
    margin-bottom: 32px;
    max-width: 550px;
}
.hero-stats {
    display: flex;
    gap: 32px;
    margin-top: 28px;
}
.stat-item h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #0A66C2;
}
.hero-image {
    flex: 0.9;
    background: #D9EAFB;
    border-radius: 32px;
    padding: 24px;
    text-align: center;
    box-shadow: 0 20px 35px -12px rgba(0,0,0,0.1);
}
.hero-image i {
    font-size: 8rem;
    color: #2C9A8E;
    opacity: 0.8;
}
@media (max-width: 850px) {
    .hero-content h2 { font-size: 2.2rem; }
    .hero-grid { flex-direction: column; text-align: center; }
    .hero-stats { justify-content: center; }
}

/* 通用章节样式 */
.section {
    padding: 80px 0;
}
.section-title {
    text-align: center;
    font-size: 2.3rem;
    font-weight: 700;
    color: #0B2B42;
    margin-bottom: 14px;
}
.section-sub {
    text-align: center;
    color: #5D6E85;
    max-width: 700px;
    margin: 0 auto 48px;
    font-size: 1.05rem;
}

/* 科研服务卡片区——类似卡片式设计，展示多种分析服务 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}
.service-card {
    background: #FFFFFF;
    border-radius: 28px;
    padding: 32px 24px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.03);
    transition: all 0.25s ease;
    border: 1px solid #ECF3FA;
    text-align: center;
}
.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 30px -12px rgba(10,102,194,0.12);
    border-color: #CDE2F7;
}
.service-icon {
    font-size: 2.8rem;
    color: #0A66C2;
    margin-bottom: 20px;
}
.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    font-weight: 600;
}
.service-card p {
    color: #4A5A72;
    line-height: 1.5;
    margin-bottom: 20px;
}
.learn-more {
    color: #0A66C2;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* 试剂产品区域 采用产品展示卡片 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 24px;
}
.product-item {
    background: #FAFDFF;
    border-radius: 24px;
    padding: 28px 20px;
    text-align: center;
    transition: all 0.2s;
    border: 1px solid #E6F0FA;
}
.product-icon {
    background: #EFF5FE;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 60px;
    margin: 0 auto 20px;
}
.product-icon i {
    font-size: 2.3rem;
    color: #0A66C2;
}
.product-item h4 {
    font-size: 1.3rem;
    margin-bottom: 12px;
}
.product-cat {
    display: inline-block;
    background: #EFF5FE;
    color: #0A66C2;
    padding: 4px 14px;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 12px;
}
.price-badge {
    margin-top: 16px;
    font-weight: 500;
    color: #2C9A8E;
}

/* 联系版式 + 地图表单 现代简约 */
.contact-wrap {
    background: #F7FAFE;
    border-radius: 48px;
    padding: 48px 40px;
    display: flex;
    flex-wrap: wrap;
    gap: 48px;
    justify-content: space-between;
}
.contact-info {
    flex: 1;
}
.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    font-weight: 600;
}
.contact-detail {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin: 32px 0;
}
.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}
.contact-item i {
    font-size: 1.4rem;
    width: 40px;
    color: #0A66C2;
}
.contact-form {
    flex: 1.2;
    background: white;
    border-radius: 32px;
    padding: 32px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.02);
}
.form-group {
    margin-bottom: 20px;
}
.form-group input, .form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid #DCE5F0;
    border-radius: 28px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: 0.2s;
}
.form-group textarea {
    border-radius: 24px;
    resize: vertical;
}
.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: #0A66C2;
    box-shadow: 0 0 0 3px rgba(10,102,194,0.1);
}
.btn-submit {
    background: #0A66C2;
    color: white;
    border: none;
    padding: 12px 32px;
    border-radius: 40px;
    font-weight: 600;
    cursor: pointer;
}
@media (max-width: 780px) {
    .contact-wrap { padding: 32px 24px; }
}

/* 页脚 */
.footer {
    background: #0A1927;
    color: #B0C4DE;
    padding: 48px 0 28px;
    margin-top: 40px;
}
.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
}
.footer-col p {
    margin-top: 10px;
    max-width: 260px;
    font-size: 0.85rem;
}
.footer-col h4 {
    color: white;
    margin-bottom: 20px;
    font-size: 1.1rem;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul li a {
    color: #B0C4DE;
    text-decoration: none;
    font-size: 0.85rem;
}
.copyright {
    text-align: center;
    padding-top: 40px;
    font-size: 0.8rem;
    border-top: 1px solid #1F2F3C;
    margin-top: 40px;
}

.text-center {
    text-align: center;
}
i, svg {
    pointer-events: none;
}
.footer .copyright a {
    color: #B0C4DE;
    text-decoration: none;
    margin: 0 6px;
}
.footer .copyright a:hover {
    text-decoration: underline;
    color: #ffffff;
}