/* 组织公益服务模块样式 */
#announcements {
    position: relative;
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    overflow: hidden;
}

#announcements::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://image.mcmsf.com/file/1743165925219_1%20(10).png') center/cover no-repeat;
    opacity: 0.05;
    z-index: 0;
}

#announcements .container {
    position: relative;
    z-index: 2;
}

#announcements h2 {
    position: relative;
    margin-bottom: 50px;
    padding-bottom: 15px;
}

#announcements h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, #4C78DD, #6610f2);
    border-radius: 3px;
}

/* 服务卡片样式 */
.service-card {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    margin-bottom: 30px;
    background-color: #fff;
    height: 100%;
    transform: translateY(30px);
    opacity: 0;
}

/* 入场动画类 */
.service-card-visible {
    transform: translateY(0);
    opacity: 1;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.service-card .card-body {
    padding: 25px;
    position: relative;
    z-index: 2;
}

.service-icon-wrapper {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(76, 120, 221, 0.1) 0%, rgba(102, 16, 242, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(76, 120, 221, 0.1);
}

.service-card:hover .service-icon-wrapper {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, rgba(76, 120, 221, 0.2) 0%, rgba(102, 16, 242, 0.2) 100%);
}

.service-icon {
    font-size: 2.5rem;
    color: #4C78DD;
    transition: all 0.3s ease;
}

.service-card:hover .service-icon {
    transform: rotate(-5deg);
}

.service-title {
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
    padding-bottom: 15px;
    color: #333;
    transition: color 0.3s ease;
}

.service-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2px;
    background: linear-gradient(90deg, #4C78DD, #6610f2);
    transition: width 0.3s ease;
    border-radius: 2px;
}

.service-card:hover .service-title::after {
    width: 70px;
}

.service-description {
    color: #666;
    margin-bottom: 25px;
    min-height: 80px;
}

.service-btn {
    position: relative;
    padding: 10px 25px;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    border: 2px solid #4C78DD;
    background: transparent;
    color: #4C78DD;
    overflow: hidden;
    z-index: 1;
}

.service-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, #4C78DD, #6610f2);
    transition: all 0.3s ease;
    z-index: -1;
}

.service-card:hover .service-btn {
    color: #fff;
}

.service-card:hover .service-btn::before {
    width: 100%;
}

/* 背景装饰元素 */
.service-card::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(76, 120, 221, 0.05) 0%, rgba(102, 16, 242, 0.05) 100%);
    transition: all 0.4s ease;
    z-index: 1;
}

.service-card:hover::before {
    transform: scale(5);
}

/* 响应式调整 */
@media (max-width: 992px) {
    #announcements {
        padding: 60px 0;
    }
    
    .service-description {
        min-height: auto;
    }
}

/* 深色模式适配 */
.dark-mode #announcements {
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
}

.dark-mode .service-card {
    background-color: #2a2a2a;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.dark-mode .service-title {
    color: #f0f0f0;
}

.dark-mode .service-description {
    color: #ccc;
}

.dark-mode .service-icon-wrapper {
    background: linear-gradient(135deg, rgba(76, 120, 221, 0.15) 0%, rgba(102, 16, 242, 0.15) 100%);
}

.dark-mode .service-card:hover .service-icon-wrapper {
    background: linear-gradient(135deg, rgba(76, 120, 221, 0.25) 0%, rgba(102, 16, 242, 0.25) 100%);
}

/* 添加页面装饰元素 */
.decoration-dots {
    position: absolute;
    width: 200px;
    height: 200px;
    background-image: radial-gradient(circle, #4C78DD 1px, transparent 1px);
    background-size: 15px 15px;
    opacity: 0.2;
    z-index: 1;
}

.decoration-dots-1 {
    top: 50px;
    left: 50px;
    transform: rotate(15deg);
}

.decoration-dots-2 {
    bottom: 50px;
    right: 50px;
    transform: rotate(-15deg);
}