/* China UWH Group 网站优化样式 */

/* 首页Hero Section样式 */
.hero-section {
    position: relative;
    height: 600px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/shanghai_lujiazui_day_1.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        rgba(0, 0, 0, 0.7),
        rgba(0, 0, 0, 0.7)
    );
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-content p {
    font-size: 1.5rem;
    font-weight: 300;
    line-height: 1.6;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* Why China Office 卡片样式 */
.advantages-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.advantages-section .section-title {
    text-align: center;
    font-size: 2.5rem;
    color: #1976D2;
    margin-bottom: 3rem;
    font-weight: 600;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.advantage-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #1976D2, #42A5F5);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

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

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #E3F2FD, #BBDEFB);
    border-radius: 50%;
    transition: all 0.3s ease;
    font-size: 2rem;
    color: #1976D2;
}

.advantage-card:hover .card-icon {
    background: linear-gradient(135deg, #1976D2, #42A5F5);
    color: white;
}

.card-title {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 1rem;
    font-weight: 600;
}

.card-description {
    color: #666;
    line-height: 1.6;
    font-size: 1rem;
}

/* Services 卡片样式 */
.services-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
}

.services-section .section-title {
    text-align: center;
    font-size: 2.5rem;
    color: #E53E3E;
    margin-bottom: 3rem;
    font-weight: 600;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #E53E3E, #FC8181);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

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

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #FED7D7, #FBB6CE);
    border-radius: 50%;
    transition: all 0.3s ease;
    font-size: 2rem;
    color: #E53E3E;
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, #E53E3E, #FC8181);
    color: white;
}

.services-button {
    display: inline-block;
    background: linear-gradient(135deg, #1976D2, #42A5F5);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    margin-top: 3rem;
    box-shadow: 0 4px 15px rgba(25, 118, 210, 0.3);
}

.services-button:hover {
    background: linear-gradient(135deg, #1565C0, #1976D2);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(25, 118, 210, 0.4);
    color: white;
    text-decoration: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-section {
        height: 400px;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1.2rem;
    }
    
    .advantages-grid,
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
    
    .advantage-card,
    .service-card {
        padding: 2rem;
    }
    
    .advantages-section .section-title,
    .services-section .section-title {
        font-size: 2rem;
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .hero-section {
        height: 350px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .advantage-card,
    .service-card {
        padding: 1.5rem;
    }
    
    .card-icon,
    .service-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .card-title {
        font-size: 1.3rem;
    }
}

/* 改进的Hero Section样式 - 更好的对比度 */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        rgba(0, 0, 0, 0.5),
        rgba(0, 0, 0, 0.7)
    );
    z-index: 2;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.8);
    color: white;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    padding: 20px;
    border-radius: 10px;
    backdrop-filter: blur(5px);
}

.hero-content p {
    font-size: 1.5rem;
    font-weight: 400;
    line-height: 1.6;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    color: white;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    padding: 15px;
    border-radius: 8px;
    backdrop-filter: blur(5px);
}