:root {
            --primary-blue: #1a5cff;
            --dark-bg: #0a192f;
            --light-bg: #f8f9fa;
            --text-dark: #2d3436;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', system-ui, sans-serif;
        }

        /* 导航样式 */
        .navbar {
            padding: 1.2rem 5%;
            background: rgba(255,255,255,0.97);
            box-shadow: 0 2px 15px rgba(0,0,0,0.1);
            position: fixed;
            width: 100%;
            z-index: 1000;
        }

        .nav-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-blue);
        }

        .nav-links {
            display: flex;
            gap: 2rem;
        }

        .nav-link {
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        .section-title {
  text-align: center;
  font-weight: bold;
  padding: 30px;
  color: #1a5cff;
  font-size: 1.8em;
}
        /* 主内容区 */
        .hero {
            padding: 150px 5% 100px;
            background: linear-gradient(135deg, var(--primary-blue) 0%, #0a2c6b 100%);
            color: white;
            text-align: center;
        }

        .hero h1 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
        }
     li{list-style:none;padding: 10px;}
        .services {

            background: var(--light-bg);
        }

        .service-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .service-card {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
        }

        .service-icon {
            font-size: 2.5rem;
            color: var(--primary-blue);
            margin-bottom: 1rem;
        }

        /* 课程模块 */
        .courses {
            padding: 30px 5%;
            background: white;
        }

        .course-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        .course-card {
            border: 1px solid #eee;
            border-radius: 10px;
            overflow: hidden;
            transition: transform 0.3s;
        }
/* 新增样式 */
    .service-header {
        border-bottom: 2px solid #eee;
        padding-bottom: 1rem;
        margin-bottom: 1.5rem;
    }

    .process-steps {
        display: grid;
        gap: 1.5rem;
        margin-bottom: 2rem;
    }

    .step {
        position: relative;
        padding-left: 2.5rem;
    }

    .step-number {
        position: absolute;
        left: 0;
        top: 0;
        width: 1.8rem;
        height: 1.8rem;
        background: var(--primary-blue);
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: bold;
    }

    .advantage-tags {
        display: flex;
        gap: 0.8rem;
        flex-wrap: wrap;
    }

    .advantage-tags span {
        background: #e3f2fd;
        color: var(--primary-blue);
        padding: 0.4rem 1rem;
        border-radius: 20px;
        font-size: 0.9rem;
    }

    .platform-services {
        display: grid;
        gap: 1.5rem;
    }

    .platform {
        display: flex;
        gap: 1rem;
        align-items: start;
    }

    .platform-icon {
        width: 40px;
        height: 40px;
        object-fit: contain;
    }

    .tech-list {
        display: grid;
        gap: 1rem;
    }

    .tech-item {
        display: flex;
        align-items: center;
        gap: 0.8rem;
        padding: 0.8rem;
        background: #f8f9fa;
        border-radius: 8px;
    }

    .case-example {
        margin-top: 1.5rem;
        padding: 1rem;
        border-radius: 8px;
    }
   .service-header h3{text-align:center;}
        /* 响应式设计 */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .service-grid {
                grid-template-columns: 1fr;
            }
        }
		    /* 成功案例样式 */
    .case-studies {
        background: #f8fafc;
        padding: 4rem 0;
    }

    .case-grid {
        display: grid;
        gap: 2rem;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        max-width: 1200px;
        margin: 0 auto;
    }

    .case-card {
        background: white;
        border-radius: 12px;
        padding: 2rem;
        box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    }

    .case-header {
        border-bottom: 2px solid #eee;
        padding-bottom: 1rem;
        margin-bottom: 1.5rem;
    }

    .industry-tag {
        background: var(--primary-blue);
        color: white;
        padding: 0.3rem 1rem;
        border-radius: 20px;
        font-size: 0.9rem;
        display: inline-block;
        margin-top: 0.5rem;
    }

    .metrics {
        display: flex;
        gap: 1.5rem;
        margin: 1.5rem 0;
    }

    .metric-item {
        text-align: center;
        flex: 1;
    }

    .metric-value {
        font-size: 2rem;
        font-weight: 700;
        color: var(--primary-blue);
    }

    /* 师资团队样式 */
    .team-section {
        padding: 4rem 0 0 0;
        background: white;
    }

    .team-grid {
        display: grid;
        gap: 2rem;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        max-width: 1200px;
        margin: 0 auto;
    }

    .team-card {
        text-align: center;
        padding: 2rem;
        border-radius: 12px;
        transition: transform 0.3s;
    }

    .team-card:hover {
        transform: translateY(-5px);
    }

    .avatar-container {
        position: relative;
        width: 150px;
        height: 150px;
        margin: 0 auto 1.5rem;
    }

    .team-avatar {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        object-fit: cover;
        border: 3px solid var(--primary-blue);
    }

    .social-links {
        position: absolute;
        bottom: -10px;
        left: 50%;
        transform: translateX(-50%);
        display: flex;
        gap: 0.5rem;
    }

    .social-links a {
        background: white;
        width: 32px;
        height: 32px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }

    .team-credentials {
        text-align: left;
        margin-top: 1rem;
        list-style: none;
    }

    .team-credentials li {
        padding: 0.5rem 0;
        border-bottom: 1px solid #eee;
    }

    @media (max-width: 768px) {
        .metrics {
            flex-direction: column;
        }
    }
     /* 课程模块样式 */
    .platform-courses {
        display: flex;
        gap: 2rem;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .douyin-courses, .xiaohongshu-courses {
        flex: 1;
    }

    .platform-header {
        text-align: center;
        margin-bottom: 2rem;
    }

    .platform-logo {
        height: 50px;
        margin-bottom: 1rem;
    }

    .course-column {
        display: grid;
        gap: 1.5rem;
    }

    .course-card {
        background: white;
        border-radius: 12px;
        padding: 1.5rem;
        box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        position: relative;
        border-top: 4px solid transparent;
    }

    .course-tier {
        position: absolute;
        top: 8px;
        right: 15px;
        background: #d6d9ff;
        padding: 0.3rem 1rem;
        border-radius: 20px;
        font-size: 0.9rem;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }

    .price {
        color: var(--primary-blue);
        font-size: 1.4rem;
        font-weight: 700;
        margin: 1rem 0;
    }

    .original-price {
        color: #999;
        font-size: 0.9rem;
        text-decoration: line-through;
        margin-left: 0.8rem;
    }

    .course-features {
        list-style: none;
        margin: 1rem 0;
    }

    .course-features li {
        padding: 0.5rem 0;
        display: flex;
        align-items: center;
        gap: 0.8rem;
    }

    .course-features i {
        color: var(--primary-blue);
    }

    .course-meta {
        display: flex;
        justify-content: space-between;
        color: #666;
        font-size: 0.9rem;
        margin: 1.5rem 0;
    }

    .enroll-btn {
        width: 100%;
        padding: 1rem;
        border: none;
        border-radius: 8px;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s;
    }



    .enroll-btn:hover {
        opacity: 0.9;
        transform: translateY(-2px);
    }


.site-info{padding: 2rem 0px;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

    @media (max-width: 768px) {
        .platform-courses {
            flex-direction: column;
        }
        
        .platform-logo {
            height: 40px;
        }
    }