/* 公司优势区块 */
.advantages {
    padding: 5rem 5%;
    background: #f9fafb;
}

.advantages-container {
    max-width: 1200px;
    margin: 0 auto;
}

.advantages .section-title {
    text-align: center;
    margin-bottom: 50px;
}

.advantages .section-title h2 {
    font-size: 2.2rem;
    color: #1e293b;
    margin-bottom: 15px;
    font-weight: 700;
}

.advantages .section-title p {
    font-size: 1rem;
    color: #64748b;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

/* 优势卡片 */
.advantage-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2.5rem 1.5rem;
    text-align: center;
    border: none;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px) scale(0.95);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.04);
}

.advantage-card.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.advantage-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #1e3a5f, #c9a961);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

.advantage-card:hover {
    transform: translateY(-10px) scale(1);
    box-shadow: 0 20px 40px rgba(30, 58, 95, 0.12);
}

/* 图标 */
.advantage-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 1.5rem;
    background: transparent;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
    box-shadow: none;
}

.advantage-icon img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.advantage-card:hover .advantage-icon {
    transform: scale(1.15);
    box-shadow: none;
}

/* 标题 */
.advantage-card h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: #1e3a5f;
    margin-bottom: 1rem;
    font-weight: 700;
}

/* 描述 */
.advantage-card p {
    font-size: 0.95rem;
    color: #64748b;
    line-height: 1.7;
    margin: 0;
}

/* 卡片动画延迟 */
.advantage-card:nth-child(1) { transition-delay: 0.1s; }
.advantage-card:nth-child(2) { transition-delay: 0.2s; }
.advantage-card:nth-child(3) { transition-delay: 0.3s; }
.advantage-card:nth-child(4) { transition-delay: 0.4s; }

/* 优势简介行 */
.advantages-banner {
    display: flex;
    align-items: center;
    gap: 3rem;
    margin-top: 3rem;
    padding: 2.5rem;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.04);
}

.advantages-banner-image {
    flex: 0 0 45%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(30, 58, 95, 0.15);
    /* 预留图片比例，避免加载时布局跳动 */
    width: 45%;
    aspect-ratio: 16 / 10;
}

.advantages-banner-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.advantages-banner-image:hover img {
    transform: scale(1.03);
}

.advantages-banner-text {
    flex: 1;
}

.advantages-banner-text h3 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: #1e3a5f;
    margin-bottom: 1.2rem;
    font-weight: 700;
    line-height: 1.3;
    /* 断行时尽量均衡分布，避免出现孤零零的短词第二行、提升排版美观 */
    text-wrap: balance;
}

.advantages-banner-text p {
    font-size: 1rem;
    color: #64748b;
    line-height: 1.8;
    margin: 0;
}

/* 平板端适配 */
@media (max-width: 1024px) {
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .advantages-banner {
        gap: 2rem;
        padding: 2rem;
    }
    
    .advantages-banner-image {
        flex: 0 0 40%;
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .advantages {
        padding: 3rem 5%;
    }
    
    .advantages .section-title {
        margin-bottom: 2rem;
    }
    
    .advantages .section-title h2 {
        font-size: 1.8rem;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .advantage-card {
        padding: 2rem 1.5rem;
    }
    
    .advantage-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 1rem;
    }
    
    .advantage-icon img {
        width: 32px;
        height: 32px;
    }
    
    .advantage-card h3 {
        font-size: 1.1rem;
    }
    
    .advantage-card p {
        font-size: 0.9rem;
    }
    
    .advantages-banner {
        flex-direction: column;
        gap: 1.5rem;
        padding: 1.5rem;
        margin-top: 2rem;
    }
    
    .advantages-banner-image {
        flex: none;
        width: 100%;
    }
    
    .advantages-banner-text h3 {
        font-size: 1.3rem;
    }
    
    .advantages-banner-text p {
        font-size: 0.95rem;
    }
}

/* 小屏手机适配 */
@media (max-width: 480px) {
    .advantages {
        padding: 2rem 4%;
    }
    
    .advantages .section-title h2 {
        font-size: 1.5rem;
    }
    
    .advantage-card {
        padding: 1.5rem 1rem;
    }
    
    .advantage-icon {
        width: 50px;
        height: 50px;
    }
    
    .advantage-icon img {
        width: 28px;
        height: 28px;
    }
    
    .advantage-card h3 {
        font-size: 1rem;
    }
    
    .advantages-banner {
        padding: 1.2rem;
    }
    
    .advantages-banner-text h3 {
        font-size: 1.2rem;
    }
}