:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --background-color: #f8f9fa;
    --text-color: #333;
    --section-spacing: 50px;
    --base-font-size: 16px;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    background-color: var(--background-color);
    font-size: var(--base-font-size);
}

.container {
    width: 100%;
    margin: 0;
    padding: 20px;
}

header {
    width: 100%;
    text-align: left;
    background-color: white;
    padding: 10px 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* profile 部分 */
.profile-container {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 0;
    padding: 0;
}

.profile-photo-container {
    flex-shrink: 0;
    margin-right: 40px;
}

.profile-photo {
    width: 280px;
    height: 280px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.profile-info h1 {
    font-size: 2em;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.profile-info p {
    font-size: 18px;
    margin: 5px 0;
    color: var(--text-color);
}

.social-links {
    display: flex;
    gap: 20px;
    margin-top: 15px;
}

.social-links a {
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 5px;
    transition: all 0.3s ease;
    background-color: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    font-size: 16px;
}

.social-links a:hover {
    color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.section {
    background-color: white;
    padding: 30px;
    margin-bottom: var(--section-spacing);
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

h1 {
    color: var(--primary-color);
    margin: 0 0 10px 0;
    font-size: 2.75em;
}

h2 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 10px;
    margin-top: 0;
    font-size: 2em;
}

h3 {
    color: var(--primary-color);
    margin-top: 30px;
    font-size: 1.5em;
}

.media-item {
    margin-bottom: 30px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
}

.media-item p {
    margin: 0 0 10px;
}

.media-item img {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
    margin: 10px 0;
}

.publication-list {
    counter-reset: publication-counter; /* 由 JavaScript 动态设置 */
    display: flex;
    flex-direction: column; /* 恢复正常顺序 */
}

.publication {
    counter-increment: publication-counter -1; /* 正号递减 */
    position: relative;
    padding: 20px 20px 20px 70px;
    margin-bottom: 15px;
    border-radius: 8px;
    background-color: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    font-size: 17px;
}

.publication:last-child {
    border-bottom: none;
}

.publication::before {
    content: "[" counter(publication-counter) "]";
    position: absolute;
    left: 5px;
    top: 20px;
    color: var(--secondary-color);
    font-weight: 500;
    width: 35px;
    text-align: right;
    font-size: 17px;
}

.publication:nth-child(n+10) {
    padding-left: 75px;
}

.publication p {
    margin: 0;
}

.publication a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.publication a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.publication:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.publication strong {
    color: var(--primary-color);
}

.publication .award {
    display: inline-block;
    margin-left: 10px;
    padding: 2px 8px;
    border-radius: 4px;
    background-color: #fef2f2;
    color: #dc2626;
    font-size: 0.9em;
}

/* Tab 样式 */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.tab-button {
    padding: 10px 20px;
    background: var(--background-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 18px;
    font-weight: 500;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.tab-button.active {
    background: var(--primary-color);
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Skip Link：默认隐藏，获得焦点时突出显示 */
.skip-link {
    position: absolute;
    left: -1000px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.skip-link:focus {
    position: static;
    left: 0;
    top: 0;
    width: auto;
    height: auto;
    background: #fff;
    padding: 8px;
    text-align: center;
    z-index: 1000;
    border: 2px solid #000;
}

/* 错误提示样式 */
.error-message {
    background-color: #fef2f2;
    border: 1px solid #dc2626;
    color: #dc2626;
    padding: 12px;
    border-radius: 8px;
    margin: 10px 0;
}

/* 无障碍焦点样式 */
a:focus, button:focus, input:focus, select:focus {
    outline: 3px solid var(--secondary-color);
    outline-offset: 2px;
}

.tab-button:focus {
    outline: 3px solid var(--secondary-color);
    outline-offset: 2px;
}

/* 悬停效果 */
a:hover, button:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .tab-button {
        font-size: 16px;
        padding: 10px;
    }
    
    .tabs {
        gap: 8px;
    }
    
    .profile-container {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .profile-photo-container {
        margin: 0 0 10px;
    }
    
    .profile-photo {
        width: 200px;
        height: 200px;
    }
    
    .profile-info {
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
        gap: 10px;
    }
}