:root {
    --primary-blue: #007BFF;
    --dark-blue: #0056b3;
    --light-bg: #F8F9FA;
    --text-dark: #333;
    --text-gray: #666;
    --border-color: #e0e0e0;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background-color: var(--light-bg); color: var(--text-dark); line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: color 0.2s; }
nav { background: #fff; padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
.logo-area { display: flex; align-items: center; gap: 12px; }
.logo-area img { height: 40px; }
.logo-area span { font-weight: 700; font-size: 1.2rem; color: var(--text-dark); }
.nav-links { display: flex; gap: 20px; align-items: center; }
.nav-links a { font-weight: 500; color: var(--text-gray); }
.nav-links a:hover { color: var(--primary-blue); }
.lang-btn { padding: 5px 12px; border: 1px solid var(--border-color); border-radius: 20px; font-size: 0.9rem; }
.lang-btn:hover { border-color: var(--primary-blue); color: var(--primary-blue); }
.hero { background: linear-gradient(135deg, #e3f2fd 0%, #ffffff 100%); padding: 4rem 2rem; text-align: center; }
.hero h1 { font-size: 2.5rem; margin-bottom: 2rem; color: var(--primary-blue); }

/* Hero Content */
.hero-content { 
    max-width: 900px; 
    margin: 0 auto; 
    text-align: left; 
    background: rgba(255,255,255,0.95); 
    padding: 2.5rem; 
    border-radius: 12px; 
    box-shadow: 0 4px 15px rgba(0,0,0,0.05); 
}
.hero-content p { margin-bottom: 0.8rem; font-size: 1.05rem; color: #444; line-height: 1.6; }
.hero-content p:last-child { margin-bottom: 0; }
.hero-content ul { list-style: none; margin: 1rem 0; padding-left: 0.5rem; }
.hero-content li { margin-bottom: 0.6rem; font-size: 1rem; color: #555; line-height: 1.5; }

.container { max-width: 1200px; margin: 0 auto; padding: 3rem 2rem; }
.section-title { font-size: 1.8rem; margin-bottom: 2rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--primary-blue); display: inline-block; }
.news-list { list-style: none; background: #fff; padding: 2rem; border-radius: 12px; box-shadow: var(--card-shadow); }
.news-list li { margin-bottom: 1rem; padding-bottom: 1rem; border-bottom: 1px solid #f0f0f0; }
.news-list li:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.news-list strong { color: var(--primary-blue); }
.news-list a { color: var(--dark-blue); font-weight: 500; text-decoration: underline; text-decoration-color: rgba(0, 86, 179, 0.3); }

/* Domain Block */
.domain-block { margin-bottom: 4rem; }
.domain-header { display: flex; align-items: center; gap: 10px; margin-bottom: 1.5rem; }
.domain-icon { font-size: 2rem; }
.domain-title { font-size: 1.6rem; font-weight: 700; }

/* Domain Intro - 已修改，增强链接样式 */
.domain-intro { 
    margin-bottom: 2rem; 
    color: var(--text-gray); 
    font-style: italic; 
    background: #fff; 
    padding: 1.5rem; 
    border-left: 4px solid var(--primary-blue); 
    border-radius: 0 8px 8px 0; 
}

/* 重点突出 Intro 里的超链接 */
.domain-intro a {
    color: var(--primary-blue);
    font-weight: 700; /* 加粗 */
    font-style: normal; /* 链接文字不倾斜，更易读 */
    text-decoration: none;
    border-bottom: 2px solid rgba(0, 123, 255, 0.3); /* 底部粗线条 */
    padding-bottom: 1px;
    transition: all 0.2s ease;
}

.domain-intro a:hover {
    color: #fff;
    background-color: var(--primary-blue); /* 悬停背景变蓝 */
    border-bottom-color: transparent;
    border-radius: 4px;
    padding: 2px 6px;
    margin: 0 -4px; /* 微调位置，防止排版跳动 */
    box-shadow: 0 2px 5px rgba(0, 123, 255, 0.3);
}

/* Papers Grid */
.papers-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); gap: 20px; }
.paper-card { background: #fff; padding: 1.5rem; border-radius: 12px; box-shadow: var(--card-shadow); transition: transform 0.2s, box-shadow 0.2s; border: 1px solid transparent; display: flex; flex-direction: column; }
.paper-card:hover { transform: translateY(-5px); box-shadow: 0 10px 25px rgba(0,0,0,0.1); border-color: #b3d7ff; }
.paper-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.8rem; line-height: 1.4; }
.paper-desc { font-size: 0.9rem; color: var(--text-gray); margin-bottom: 1rem; flex-grow: 1; }

/* Badges */
.badge-container { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 4px 10px; border-radius: 6px; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.badge-project { background: #e3f2fd; color: #007BFF; }
.badge-arxiv { background: #fbe9e7; color: #d32f2f; }
.badge-github { background: #24292e; color: #fff; }
.badge-github:hover { background: #000; color: #fff; }
.badge-publish { background: #e8f5e9; color: #2e7d32; }
.badge-huggingface { background: #fff8e1; color: #f57f17; }
.badge-modelscope { background: #f3e5f5; color: #7b1fa2; }

/* GitHub Stars 样式 */
.badge-stars {
    background: #fff8e1; 
    color: #f57f17;      
    border: 1px solid rgba(245, 127, 23, 0.2);
    transition: all 0.2s ease;
}
.badge-stars:hover {
    background: #ffecb3;
    border-color: rgba(245, 127, 23, 0.4);
    transform: translateY(-2px);
}

.badge:hover { filter: brightness(0.95); }
footer { text-align: center; padding: 2rem; color: #999; font-size: 0.9rem; margin-top: 2rem; border-top: 1px solid #eee; }
@media (max-width: 768px) { .hero h1 { font-size: 2rem; } .papers-grid { grid-template-columns: 1fr; } .nav-links { display: none; } nav { justify-content: center; } }