/* 会员运营体系概述 */
        .overview-section {
            padding: 80px 0;
            background-color: white;
        }

        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-title h2 {
            font-size: 36px;
            color: #0a2e5c;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, #4dabf7, #0e74f6);
            border-radius: 2px;
        }

        .section-title p {
            font-size: 18px;
            color: #666;
            max-width: 700px;
            margin: 20px auto 0;
        }

        .overview-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .overview-text h3 {
            font-size: 32px;
            color: #0a2e5c;
            margin-bottom: 25px;
        }

        .overview-text p {
            color: #666;
            line-height: 1.8;
            margin-bottom: 20px;
            font-size: 16px;
        }

        .overview-features {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .overview-feature {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            border-left: 4px solid #0e74f6;
        }

        .overview-feature h4 {
            color: #0a2e5c;
            margin-bottom: 10px;
            font-size: 18px;
        }

        .overview-image {
            text-align: center;
        }

        .overview-image img {
            max-width: 100%;
            border-radius: 12px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }

        /* 功能模块展示 */
        .modules-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        }

        .modules-tabs {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 40px;
        }

        .module-tab {
            background: white;
            padding: 15px 30px;
            border-radius: 30px;
            font-weight: 500;
            color: #666;
            cursor: pointer;
            transition: all 0.3s;
            border: 2px solid transparent;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }

        .module-tab.active {
            background: linear-gradient(135deg, #4dabf7 0%, #0e74f6 100%);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(77, 171, 247, 0.3);
        }

        .module-tab:hover {
            border-color: #0e74f6;
        }

        .modules-content {
            display: none;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .modules-content.active {
            display: grid;
            animation: fadeIn 0.5s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .module-card {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid #e9ecef;
        }

        .module-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
        }

        .module-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, #4dabf7 0%, #0e74f6 100%);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 28px;
            color: white;
        }

        .module-card h3 {
            font-size: 22px;
            color: #0a2e5c;
            margin-bottom: 15px;
        }

        .module-card p {
            color: #666;
            line-height: 1.8;
            margin-bottom: 20px;
        }

                .feature-list {
    list-style: none;
    padding-left: 0;
}

.feature-list li {
    position: relative;
    padding-left: 8px;
    margin-bottom: 10px;
    line-height: 1.5;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: #2c9cd4;
    font-weight: bold;
    font-size: 1.1rem;
}

/* 或者使用更美观的svg图标 */
.feature-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 2px;
    width: 18px;
    height: 18px;
    background-size: contain;
    background-repeat: no-repeat;
}

        /* 会员价值展示 */
        .value-section {
            padding: 80px 0;
            background-color: white;
        }

        .value-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
            margin-top: 40px;
        }

        .value-card {
            background: white;
            border-radius: 12px;
            padding: 40px 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid #e9ecef;
            text-align: center;
        }

        .value-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
        }

        .value-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #4dabf7 0%, #0e74f6 100%);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            font-size: 32px;
            color: white;
        }

        .value-card h3 {
            font-size: 22px;
            color: #0a2e5c;
            margin-bottom: 15px;
        }

        .value-card p {
            color: #666;
            line-height: 1.8;
        }

        /* 会员运营流程 */
        .process-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        }

        .process-container {
            max-width: 900px;
            margin: 40px auto;
        }

        .process-step {
            display: flex;
            align-items: center;
            margin-bottom: 40px;
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            position: relative;
        }

        .process-step:not(:last-child):after {
            content: '';
            position: absolute;
            left: 50px;
            bottom: -40px;
            width: 2px;
            height: 40px;
            background: #0e74f6;
        }

        .step-number {
            background: linear-gradient(135deg, #4dabf7 0%, #0e74f6 100%);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 20px;
            flex-shrink: 0;
            margin-right: 30px;
        }

        .step-content {
            flex: 1;
        }

        .step-content h4 {
            color: #0a2e5c;
            margin-bottom: 10px;
            font-size: 20px;
        }

        .step-content p {
            color: #666;
            line-height: 1.8;
        }

        /* 会员案例展示 */
        .case-section {
            padding: 80px 0;
            background-color: white;
        }

        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .case-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid #e9ecef;
        }

        .case-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
        }

        .case-image {
            height: 200px;
            background-size: cover;
            background-position: center;
        }

        .case-content {
            padding: 25px;
        }

        .case-content h4 {
            color: #0a2e5c;
            margin-bottom: 10px;
            font-size: 18px;
        }

        .case-content p {
            color: #666;
            line-height: 1.6;
            margin-bottom: 15px;
        }

        .case-tag {
            display: inline-block;
            background: rgba(14,116,246, 0.1);
            color: #0e74f6;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
        }
        
                /* 响应式设计 */
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: fixed;
                top: 0;
                right: -100%;
                width: 80%;
                height: 100vh;
                background: rgba(14,116,246, 0.98);
                flex-direction: column;
                padding: 80px 20px 20px;
                transition: right 0.3s ease;
            }

            .nav-menu.active {
                right: 0;
            }

            .mobile-menu-btn {
                display: flex;
            }

            .page-header h1 {
                font-size: 36px;
            }

            .page-header p {
                font-size: 18px;
            }

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

            .overview-content {
                grid-template-columns: 1fr;
            }

            .overview-features {
                grid-template-columns: 1fr;
            }

            .modules-tabs {
                flex-direction: column;
                align-items: center;
            }

            .module-tab {
                width: 100%;
                max-width: 300px;
                text-align: center;
            }

            .process-step {
                flex-direction: column;
                text-align: center;
            }

            .step-number {
                margin-right: 0;
                margin-bottom: 20px;
            }

            .process-step:not(:last-child):after {
                left: 50%;
                transform: translateX(-50%);
                bottom: -40px;
                height: 40px;
                width: 2px;
            }
        }