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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 
                 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
}

.header h1 {
    font-size: 28px;
    margin-bottom: 10px;
    font-weight: 600;
}

.header p {
    font-size: 16px;
    opacity: 0.95;
}

.content {
    padding: 30px;
}

.section {
    margin-bottom: 30px;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 15px;
    border-left: 4px solid #667eea;
}

.section h2 {
    color: #333;
    font-size: 22px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.section h2::before {
    content: '●';
    color: #667eea;
    margin-right: 10px;
    font-size: 16px;
}

.section p {
    color: #555;
    font-size: 15px;
    margin-bottom: 10px;
    text-align: justify;
}

.qa-item {
    background: white;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.qa-item strong {
    color: #667eea;
    display: block;
    margin-bottom: 8px;
    font-size: 16px;
}

.qa-item p {
    margin: 0;
    padding-left: 10px;
    line-height: 1.8;
}

.qa-item p strong {
    display: inline;
    white-space: nowrap;
}

.requirements {
    background: white;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.requirements ul {
    list-style: none;
    padding: 0;
}

.requirements li {
    padding: 12px 15px;
    margin-bottom: 10px;
    background: #f8f9fa;
    border-radius: 8px;
    position: relative;
    padding-left: 40px;
    color: #555;
}

.requirements li::before {
    content: '✓';
    position: absolute;
    left: 15px;
    color: #667eea;
    font-weight: bold;
    font-size: 18px;
}

.highlight {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    font-size: 18px;
    font-weight: 600;
    margin: 25px 0;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.case-image {
    width: 100%;
    max-width: 500px;
    margin: 20px auto;
    display: block;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cta-button {
    display: block;
    width: 100%;
    max-width: 400px;
    margin: 30px auto;
    padding: 18px 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.5);
}

.cta-button::before {
    content: '💬 ';
    font-size: 20px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.feature-item {
    background: white;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.feature-item .icon {
    font-size: 32px;
    margin-bottom: 10px;
}

.feature-item .title {
    color: #333;
    font-weight: 600;
    margin-bottom: 5px;
}

.feature-item .desc {
    color: #999;
    font-size: 13px;
}

.footer {
    background: #f8f9fa;
    padding: 20px;
    text-align: center;
    color: #999;
    font-size: 14px;
}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    .header {
        padding: 30px 20px;
    }

    .header h1 {
        font-size: 24px;
    }

    .content {
        padding: 20px;
    }

    .section {
        padding: 20px;
    }

    .section h2 {
        font-size: 20px;
    }
}

/* 悬浮客服按钮 */
.floating-service {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 55px;
    height: 55px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.5);
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    text-decoration: none;
    z-index: 1000;
}

.floating-service:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.7);
}

.floating-service .service-icon {
    width: 38px;
    height: 38px;
    object-fit: contain;
}