body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

#bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

main {
    position: relative;
    z-index: 1;
    color: white;
}

.navbar {
    position: fixed;
    height: 75px;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 20px 30px;
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.navbar a {
    color: white;
    text-decoration: none;
    font-weight: 900;
    font-size: larger;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.card {
    transition: 0.3s;
}

.card:hover {
    transform: scale(1.05);
}


h2{
    text-align: center;
    padding: 5px;
    font-size: x-large;
    color: white;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.footer {
    color: white;
    text-align: center;
    padding: 10px 0 0 0;
    margin-bottom: 0%;
    width: 100%;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.subtitle {
    font-size: 16px;
    color: #e0e0e0;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.location{
    font-size: 14px;
    color: #e0e0e0;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.fas, .fab {
    margin-right: 8px; /* 让图标和文字之间有间隔 */
}

/* New Section Styles */
.hero-section {
    min-height: 80vh;
    display: flex;
    align-items: center;
    padding-top: 60px;
    position: relative;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

/* Scroll Animation Classes */
.fade-in-section {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-left.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-right.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.scale-in.is-visible {
    opacity: 1;
    transform: scale(1);
}

.content-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 2rem;
    text-align: center;
    color: white;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.name-title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-top: 1rem;
    color: white;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-content {
    padding: 3rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.contact-info {
    margin-top: 2rem;
}

/* Education Timeline */
.education-timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Work Experience Timeline */
.work-timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.work-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.work-item h4 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.work-period {
    color: #e0e0e0;
    font-weight: bold;
    margin-bottom: 1rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.work-description ul {
    list-style: none;
    padding-left: 0;
}

.work-description li {
    color: white;
    line-height: 1.6;
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.work-description li::before {
    content: "▶";
    color: #4a9eff;
    font-size: 0.8rem;
    position: absolute;
    left: 0;
    top: 0.2rem;
}

.education-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.education-item h4 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.education-period {
    color: #e0e0e0;
    font-weight: bold;
    margin-bottom: 0.5rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.education-degree {
    color: #f0f0f0;
    font-style: italic;
    margin-bottom: 1rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.education-description {
    color: white;
    line-height: 1.6;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.skill-category h4 {
    color: white;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

/* Courses Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.course-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
}

.course-item h4 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.course-item p {
    color: #e0e0e0;
    margin-bottom: 1rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.course-type {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

/* Interests */
.interests-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.interest-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.interest-item h4 {
    color: white;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.interest-item p {
    color: white;
    line-height: 1.6;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

/* Goals */
.goals-content {
    background: rgba(255, 255, 255, 0.1);
    padding: 3rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.goals-content p {
    margin-bottom: 1.5rem;
    line-height: 1.6;
}