* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}
:root {
    --primary: #0F4C81;
    --secondary: #F5F7FA;
    --text: #333;
    --text-light: #666;
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
}
body {
    color: var(--text);
    line-height: 1.6;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
/* 头部 */
header {
    padding: 20px 0;
    border-bottom: 1px solid #eee;
}
.header-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}
.logo span {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-light);
    margin-left: 8px;
}
nav ul {
    display: flex;
    list-style: none;
    gap: 35px;
}
nav a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}
nav a:hover {
    color: #0A3A61;
}
/* 英雄区 */
.hero {
    background: var(--secondary);
    padding: 80px 0;
    text-align: center;
}
.hero h1 {
    font-size: 38px;
    color: var(--primary);
    margin-bottom: 20px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}
.hero p {
    font-size: 18px;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 40px;
}
.btn {
    display: inline-block;
    padding: 14px 32px;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: background 0.3s;
    border: none;
    cursor: pointer;
    font-size: 16px;
}
.btn:hover {
    background: #0A3A61;
}
/* 服务板块 */
.services {
    padding: 80px 0;
}
.section-title {
    text-align: center;
    font-size: 30px;
    color: var(--primary);
    margin-bottom: 60px;
}
.services-wrap {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.service-card {
    background: white;
    padding: 40px 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
}
.service-icon {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 25px;
}
.service-card h3 {
    font-size: 20px;
    color: var(--primary);
    margin-bottom: 15px;
}
.service-card p {
    color: var(--text-light);
}
/* 数据统计 */
.stats {
    padding: 40px 0;
    text-align: center;
    background: #f0f4f8;
}
.stats p {
    margin-bottom: 10px;
}
.stats .main-stats {
    font-size: 24px;
    color: var(--primary);
}
.stats .sub-stats {
    color: #666;
}
/* 优势板块 */
.advantages {
    background: var(--secondary);
    padding: 80px 0;
}
.advantages-wrap {
    max-width: 900px;
    margin: 0 auto;
}
.advantage-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}
.advantage-icon {
    font-size: 24px;
    color: var(--primary);
    margin-right: 20px;
    margin-top: 5px;
}
.advantage-content h4 {
    font-size: 18px;
    color: var(--primary);
    margin-bottom: 8px;
}
.advantage-content p {
    color: var(--text-light);
}
/* 联系板块 */
.contact {
    padding: 80px 0;
}
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 45px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--primary);
    font-weight: 500;
}
.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    color: var(--text);
}
.form-group textarea {
    min-height: 120px;
    resize: vertical;
}
.form-note {
    text-align: center;
    margin-top: 20px;
    color: var(--text-light);
    font-size: 14px;
}
/* 页脚 */
footer {
    padding: 40px 0;
    border-top: 1px solid #eee;
    text-align: center;
    color: var(--text-light);
}
.footer-contact {
    margin-top: 10px;
    font-size: 14px;
}
.footer-links {
    font-size: 12px;
    margin-top: 10px;
    color: #999;
}
.footer-links a {
    color: #999;
    text-decoration: none;
    margin: 0 5px;
}
.footer-links a:hover {
    text-decoration: underline;
}
/* 响应式 */
@media (max-width: 768px) {
    .header-wrap {
        flex-direction: column;
        gap: 20px;
    }
    .hero h1 {
        font-size: 28px;
    }
    .hero p {
        font-size: 16px;
    }
    .section-title {
        font-size: 24px;
    }
    .contact-form {
        padding: 30px 20px;
    }
    .form-group input, .form-group textarea {
        font-size: 16px;
    }
}