/* 自定义滚动条 */
/* 页面加载动画 */
body {
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

body.loaded {
    opacity: 1;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 导航栏高亮效果 - 简化版 */
.nav-item {
    position: relative;
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #3b82f6;
    transition: width 0.3s;
}

.nav-item:hover::after {
    width: 100%;
}

/* 时间线响应式调整 - 仅保留必要部分 */
@media (max-width: 768px) {
    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        margin-left: 60px;
    }

    .timeline-item::before {
        left: -30px;
    }
}

/* 表单输入框焦点效果 */
input:focus, textarea:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* 页脚链接悬停效果 */
footer a:hover {
    text-decoration: underline;
}

/* 图片悬停缩放效果 - 简化版 */
.img-hover {
    transition: transform 0.3s ease;
}

.img-hover:hover {
    transform: scale(1.05);
}