/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: var(--transition);
}

/* 确保内容在背景之上 */
.hero, .content-section {
    position: relative;
    z-index: 1;
    background: rgba(var(--bg-primary-rgb), 0.8);
}

#projects,#resume {
    margin-left: 20px;
    margin-right: 40px;
}

/* 内容区域 */
.content-section {
    padding: 100px 20px;
    position: relative;
    background: transparent;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: var(--accent-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}