/* 全局样式 */
body {
    margin: 0;
    font-family: 'Roboto Mono', monospace;
    background: linear-gradient(135deg, #0A1F44, #7C3E66);
    color: #FFFFFF;
    line-height: 1.6;
}
a {
    color: #00FFAA;
    text-decoration: none;
}
a[rel="nofollow"]::after {
    content: "";
}
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(30, 30, 30, 0.9);
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
}
header h1 {
    margin: 0;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 24px;
    color: #FFFFFF;
}
nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    margin: 0;
    padding: 0;
}
nav ul li a {
    font-size: 16px;
    transition: color 0.3s;
}
nav ul li a:hover {
    color: #00FFAA;
}
section {
    padding: 100px 40px 60px 40px;
    min-height: 100vh;
}
#intro {
    background: rgba(11, 31, 68, 0.8);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
#intro h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 36px;
    color: #7C3E66;
    margin-bottom: 20px;
}
#intro p {
    font-size: 18px;
    color: #BFC0C0;
    max-width: 800px;
    margin: 0 auto;
}
#research {
    background: rgba(30, 30, 30, 0.9);
}
#research h2 {
    font-size: 32px;
    color: #7C3E66;
    text-align: center;
    margin-bottom: 40px;
}
.research-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.research-item {
    background: #1E1E1E;
    padding: 20px;
    border-radius: 8px;
    transition: transform 0.3s;
}
.research-item:hover {
    transform: translateY(-10px);
}
.research-item h3 {
    color: #00FFAA;
    margin-top: 0;
}
.research-item p {
    color: #BFC0C0;
}
#team {
    background: rgba(10, 31, 68, 0.8);
}
#team h2 {
    font-size: 32px;
    color: #7C3E66;
    text-align: center;
    margin-bottom: 40px;
}
.team-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}
.team-member {
    background: #1E1E1E;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    width: 250px;
}
.team-member img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
}
.team-member h3 {
    color: #00FFAA;
    margin: 10px 0 5px 0;
}
.team-member p {
    color: #BFC0C0;
    font-size: 14px;
}
#contact {
    background: rgba(30, 30, 30, 0.9);
}
#contact h2 {
    font-size: 32px;
    color: #7C3E66;
    text-align: center;
    margin-bottom: 40px;
}
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.contact-form input, .contact-form textarea {
    padding: 10px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
}
.contact-form button {
    padding: 10px;
    background: #00FFAA;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
}
.contact-form button:hover {
    background: #7C3E66;
}
.social-links {
    text-align: center;
    margin-top: 20px;
}
.social-links a {
    margin: 0 10px;
    color: #00FFAA;
    font-size: 20px;
}
#sample-article {
    background: rgba(10, 31, 68, 0.8);
}
#sample-article h2 {
    font-size: 32px;
    color: #7C3E66;
    text-align: center;
    margin-bottom: 20px;
}
.article-content {
    max-width: 1000px;
    margin: 0 auto;
    background: #1E1E1E;
    padding: 20px;
    border-radius: 8px;
}
.article-content h3 {
    color: #7C3E66;
}
.article-content p {
    color: #BFC0C0;
}
.article-content pre {
    background: #0A1F44;
    padding: 15px;
    border-radius: 4px;
    overflow-x: auto;
}
.article-content code {
    color: #00FFAA;
    font-family: 'Roboto Mono', monospace;
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
.article-content table, .article-content th, .article-content td {
    border: 1px solid #BFC0C0;
}
.article-content th, .article-content td {
    padding: 10px;
    text-align: left;
}
.footer-note {
    text-align: center;
    padding: 20px;
    color: #BFC0C0;
    background: rgba(30, 30, 30, 0.9);
}
@media (max-width: 1440px) {
    header {
        padding: 15px 30px;
    }
    section {
        padding: 80px 30px 50px 30px;
    }
}
@media (max-width: 1200px) {
    .research-container, .team-container {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}
@media (max-width: 1024px) {
    header h1 {
        font-size: 20px;
    }
    nav ul li a {
        font-size: 14px;
    }
    #intro h2 {
        font-size: 28px;
    }
    #intro p {
        font-size: 16px;
    }
    #research h2, #team h2, #contact h2, #sample-article h2 {
        font-size: 28px;
    }
}
@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }
    nav ul {
        flex-direction: column;
        gap: 10px;
    }
    .research-container, .team-container {
        grid-template-columns: 1fr;
    }
    .contact-form input, .contact-form textarea {
        font-size: 14px;
    }
}
@media (max-width: 480px) {
    section {
        padding: 60px 20px 40px 20px;
    }
    #intro h2 {
        font-size: 24px;
    }
    #intro p {
        font-size: 14px;
    }
    .team-member {
        width: 100%;
    }
    .article-content table, .article-content th, .article-content td {
        font-size: 12px;
    }
}
@media (max-width: 320px) {
    header h1 {
        font-size: 18px;
    }
    nav ul li a {
        font-size: 12px;
    }
    #intro h2 {
        font-size: 20px;
    }
    #intro p {
        font-size: 12px;
    }
    .contact-form button {
        font-size: 14px;
    }
    .social-links a {
        font-size: 18px;
    }
}