/* 全局基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

.container-s {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    background-color: #fff;
    border-bottom: 1px solid #eee;
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 999;
}

.nav-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: #333;
    font-weight: 600;
    text-decoration: none;
}

.nav-menu a {
    margin-left: 24px;
    color: #555;
    text-decoration: none;
    font-size: 14px;
}

/* 首屏Banner */
.banner {
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('') no-repeat center;
    background-color: #2c3e50;
    color: #fff;
    padding: 60px 0;
    text-align: center;
}

.banner h1 {
    margin-bottom: 16px;
    font-size: 32px;
}

.banner p {
    margin-bottom: 5px;
    font-size: 15px;
    opacity: 0.9;
}

.banner-btn {
    margin-top: 24px;
    padding: 14px 32px;
    background-color: #0052ff;
    color: #fff;
    border: none;
    border-radius: 100px;
    cursor: pointer;
    font-weight: 500;
    font-size: 14px;
}

/* 通用区块样式 */
.section {
    padding: 50px 0;
}

.bg-light {
    background-color: #f5f5f5;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 28px;
    margin-bottom: 8px;
}

.section-title p {
    font-size: 16px;
    color: #666;
}

/* 卡片网格布局 - 弹性自适应 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.card-item {
    background-color: #fff;
    padding: 24px;
    border-radius: 8px;
    border: 1px solid #eee;
}

.card-icon {
    font-size: 24px;
    margin-bottom: 12px;
}

.card-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.card-item p {
    font-size: 14px;
    color: #666;
}

/* 服务特性网格 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background-color: #fff;
    border-radius: 6px;
}

.feature-icon {
    font-size: 20px;
    color: #0052ff;
}

.feature-item h4 {
    font-size: 18px;
    margin-bottom: 4px;
}

.feature-item p {
    font-size: 14px;
    color: #666;
}

/* 步骤流程网格 */
.step-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.step-item {
    background-color: #fff;
    padding: 30px 20px;
    border-radius: 8px;
}

.step-num {
    width: 30px;
    height: 30px;
    background-color: #0052ff;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    margin-bottom: 16px;
}

.step-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.step-item p {
    font-size: 14px;
    color: #666;
}
.step-btn {
    text-align: center;
}



/* FAQ 网格 */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.faq-item h4 {
    font-size: 18px;
    margin-bottom: 8px;
}

.faq-item p {
    font-size: 14px;
    color: #666;
}

/* 页脚 */
.footer {
    background-color: #101010;
    color: #fff;
    text-align: center;
    padding: 30px 0;
    font-size: 13px;
}

/* 移动端适配媒体查询 */
@media screen and (max-width: 768px) {
    .nav-menu a {
        margin-left: 12px;
        font-size: 13px;
    }

    .banner h1 {
        font-size: 18px;
    }

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