/* 全局样式 */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

body {
    font-family: 'Microsoft YaHei', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
}

.section-header {
    margin-bottom: 3rem;
}

/* 导航栏样式 */
.navbar-brand {
    font-weight: 700;
    letter-spacing: 0.5px;
}

.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.quick-nav .btn {
    font-size: 0.85rem;
    padding: 0.25rem 0.75rem;
}

/* Banner区域 */
.banner-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.banner-section h1 span {
    position: relative;
    z-index: 1;
}

.banner-section h1 span::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    height: 30%;
    width: 100%;
    background-color: rgba(13, 110, 253, 0.1);
    z-index: -1;
    border-radius: 3px;
}

.banner-section h1 span.text-danger::after {
    background-color: rgba(220, 53, 69, 0.1);
}

/* 特性图标 */
.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    border-radius: 50%;
    margin: 0 auto 1rem;
}

.feature-icon-small {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    border-radius: 50%;
}

/* 流程步骤 */
.process-flow {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    margin: 2rem 0;
}

.step {
    flex: 1;
    min-width: 150px;
    text-align: center;
    padding: 0 15px;
}

.step-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 1rem;
}

.step-arrow {
    display: flex;
    align-items: center;
    color: var(--secondary-color);
    font-size: 20px;
    padding: 0 10px;
    margin-top: 30px;
}

@media (max-width: 768px) {
    .process-flow {
        flex-direction: column;
    }
    
    .step {
        margin-bottom: 20px;
        width: 100%;
    }
    
    .step-arrow {
        transform: rotate(90deg);
        margin: 10px auto;
    }
}

/* 卡片样式 */
.card {
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1) !important;
}

.card-header {
    border-bottom: 0;
}

/* 表格样式 */
.table th {
    font-weight: 600;
}

.stars i {
    font-size: 16px;
}

/* 评价用户头像 */
.testimonial-avatar,
.stats-icon,
.contact-icon {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    border-radius: 50%;
}

.testimonial-text {
    position: relative;
    font-style: italic;
}

.testimonial-text::before {
    content: '\201C';
    font-size: 60px;
    position: absolute;
    left: -20px;
    top: -20px;
    opacity: 0.1;
    font-family: Georgia, serif;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

/* 响应式调整 */
@media (max-width: 991.98px) {
    .banner-section {
        padding: 3rem 0;
    }
    
    h1.display-4 {
        font-size: 2.5rem;
    }
}

@media (max-width: 767.98px) {
    .banner-section {
        padding: 2rem 0;
    }
    
    h1.display-4 {
        font-size: 2rem;
    }
    
    .section-header {
        margin-bottom: 2rem;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
}