/* Container for consistent width with other pages */
.container2 {
    width: 96%;
    min-width: 1200px;
    max-width: 1440px;
    margin: 0 auto;
    box-sizing: border-box;
}

/* Breadcrumb Navigation */
.breadcrumb-nav {
    display: flex;
    align-items: center;
    padding: 20px 0 16px 0;
    margin-top: 0px;
    margin-bottom: 0;
    font-size: 14px;
    color: #64748b;
    width: 100%;
    justify-content: flex-start;
}

.breadcrumb-item {
    color: #64748b;
    text-decoration: none;
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: center;
    line-height: 1.5;
}

.breadcrumb-item:hover {
    color: var(--color);
}

.breadcrumb-item.breadcrumb-current {
    font-weight: 500;
    cursor: default;
    pointer-events: none;
}

.breadcrumb-separator {
    margin: 0 10px;
    color: #94a3b8;
    display: inline-flex;
    align-items: center;
    line-height: 1;
}

/* Knowledge Center Main Page Styles */
.knowledge-center-container {
    min-height: 600px;
    padding: 40px 0 60px;
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

.knowledge-header {
    text-align: center;
    margin-bottom: 50px;
}

.knowledge-header .page-title {
    font-size: 42px;
    font-weight: 700;
    color: #1e293b;
    margin: 0 0 16px;
    background: linear-gradient(135deg, var(--color) 0%, #0066cc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.knowledge-header .page-subtitle {
    font-size: 18px;
    color: #64748b;
    margin: 0 0 20px;
}

.knowledge-header .page-lead {
    font-size: 16px;
    color: #64748b;
    line-height: 1.7;
    max-width: 720px;
    margin: 0 auto;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.feature-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 40px 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid #e5e7eb;
    position: relative;
    overflow: visible;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color) 0%, #0066cc 100%);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 120px;
    height: 120px;
    min-width: 120px;
    min-height: 120px;
    background: linear-gradient(135deg, rgba(65, 158, 255, 0.12) 0%, rgba(65, 158, 255, 0.22) 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    overflow: visible;
    flex-shrink: 0;
}

.feature-icon .iconfont {
    font-size: 48px;
    color: var(--color);
    line-height: 1;
    display: block;
}

.feature-icon-svg {
    color: var(--color);
}
.feature-icon-svg svg {
    width: 64px;
    height: 64px;
    display: block;
}

.feature-title {
    font-size: 24px;
    font-weight: 700;
    color: #1e293b;
    margin: 0 0 16px;
}

.feature-description {
    font-size: 15px;
    color: #64748b;
    line-height: 1.6;
    margin: 0 0 20px;
    min-height: 48px;
}

.feature-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.highlight-item {
    padding: 6px 12px;
    background: #f1f5f9;
    border-radius: 6px;
    font-size: 13px;
    color: var(--color);
    font-weight: 500;
}

.feature-link a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color);
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    transition: gap 0.3s ease;
}

.feature-link a:hover {
    gap: 12px;
}

.feature-link .iconfont {
    font-size: 16px;
}

/* Statistics Section */
.statistics-section {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding: 40px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--color);
    margin-bottom: 8px;
    line-height: 1;
}

.stat-label {
    font-size: 15px;
    color: #64748b;
    font-weight: 500;
}

/* Why Use Section */
.why-use-section {
    margin-top: 60px;
    padding: 40px 48px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid #e5e7eb;
}

.why-use-title {
    font-size: 22px;
    font-weight: 700;
    color: #1e293b;
    margin: 0 0 24px;
    text-align: center;
}

.why-use-list {
    list-style: none;
    margin: 0;
    padding: 0;
    max-width: 640px;
    margin: 0 auto;
}

.why-use-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 14px;
    font-size: 15px;
    color: #475569;
    line-height: 1.6;
}

.why-use-list li:last-child {
    margin-bottom: 0;
}

.why-use-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .statistics-section {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .why-use-section {
        margin-top: 48px;
        padding: 32px 24px;
    }
}

@media (max-width: 768px) {
    .knowledge-header .page-title {
        font-size: 32px;
    }
    
    .knowledge-header .page-lead {
        font-size: 15px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-icon {
        width: 100px;
        height: 100px;
        min-width: 100px;
        min-height: 100px;
    }
    
    .feature-icon .iconfont {
        font-size: 42px;
    }
    
    .feature-icon-svg svg {
        width: 52px;
        height: 52px;
    }
    
    .statistics-section {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 30px 20px;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .why-use-section {
        margin-top: 40px;
        padding: 28px 20px;
    }
    
    .why-use-title {
        font-size: 20px;
        margin-bottom: 20px;
    }
}