/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header - 更现代的渐变和效果 */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.header .container {
    position: relative;
    z-index: 1;
}

.title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 15px;
    text-shadow: 0 4px 8px rgba(0,0,0,0.2);
    background: linear-gradient(45deg, #fff, #f0f4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.6rem;
    font-weight: 400;
    margin-bottom: 35px;
    opacity: 0.95;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.authors {
    font-size: 1.15rem;
    margin-bottom: 20px;
    line-height: 1.8;
}

.author {
    margin: 0 10px;
    white-space: nowrap;
    transition: all 0.3s ease;
}

.author:hover {
    color: #f0f4ff;
    transform: translateY(-2px);
}

.affiliations {
    font-size: 1rem;
    margin-bottom: 25px;
    opacity: 0.9;
    line-height: 1.6;
}

.notes {
    font-size: 0.9rem;
    font-style: italic;
    margin-top: 8px;
    opacity: 0.8;
}

.conference {
    margin-bottom: 35px;
}

.venue {
    display: inline-block;
    background: rgba(255,255,255,0.15);
    padding: 12px 25px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.1rem;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255,255,255,0.3);
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.venue:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}

.links {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.link-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    background: rgba(255,255,255,0.15);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255,255,255,0.2);
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.link-button:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}

/* Main content */
.main {
    padding: 100px 0;
    background: white;
    margin: 0 20px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    position: relative;
    top: -20px;
}

section {
    margin-bottom: 100px;
    padding: 0 40px;
}

h2 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 40px;
    text-align: center;
    color: #1a202c;
    position: relative;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2::after {
    content: '';
    width: 80px;
    height: 5px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: block;
    margin: 20px auto;
    border-radius: 3px;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

h3 {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #2d3748;
}

h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: #2d3748;
}

/* Abstract section */
.abstract {
    font-size: 1.15rem;
    line-height: 1.8;
    margin-bottom: 25px;
    text-align: justify;
    color: #4a5568;
    background: linear-gradient(135deg, #f7fafc, #edf2f7);
    padding: 25px;
    border-radius: 15px;
    border-left: 5px solid #667eea;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

/* Figures - 优化图片大小控制和美化 */
.figure {
    text-align: center;
    margin: 50px 0;
    padding: 30px;
    background: linear-gradient(135deg, #f7fafc, #edf2f7);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
}

.figure img {
    max-width: 70%; /* 减小图片最大宽度从80%到70% */
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 15px;
    box-shadow: 0 15px 50px rgba(0,0,0,0.15);
    transition: all 0.4s ease;
}

.figure img:hover {
    transform: scale(1.03);
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

/* 特定图片样式 */
.overview-image {
    max-width: 65%; /* 概览图片稍小一些 */
}

.architecture-image {
    max-width: 60% !important; /* 架构图片调整到60% */
}

.results-image {
    max-width: 75%; /* 结果图片可以稍大一些 */
}

/* 更具体的选择器来确保架构图片大小 */
.figure .architecture-image {
    max-width: 60% !important;
    width: 60% !important;
}

.architecture-section .figure img.architecture-image {
    max-width: 60% !important;
    width: 60% !important;
}

.caption {
    margin-top: 20px;
    font-size: 1rem;
    color: #4a5568;
    font-style: italic;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    text-align: left;
    line-height: 1.6;
    padding: 15px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

/* Method details - 改进排版 */
.method-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr)); /* 调整最小宽度 */
    gap: 30px; /* 减小间距 */
    margin-top: 50px;
}

.stage {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 30px;
    border-radius: 20px;
    border-left: 6px solid #667eea;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stage::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.stage:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.12);
}

.stage-number {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 15px;
    font-size: 1.3rem;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.stage ul {
    list-style: none;
    margin-top: 20px;
}

.stage li {
    margin-bottom: 15px;
    padding-left: 25px;
    position: relative;
    line-height: 1.6;
    color: #4a5568;
}

.stage li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
    font-size: 1.2rem;
}

/* Components grid - 改进排版 */
.components-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 固定4列，因为Architecture Details有4个组件 */
    gap: 30px;
    margin-top: 50px;
}

.component {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    padding: 25px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border-top: 6px solid #667eea;
    height: auto; /* 改为自适应高度 */
    min-height: 200px; /* 设置最小高度 */
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* 改为顶部对齐 */
    position: relative;
    overflow: hidden;
}

.component::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.component:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.component h4 {
    margin-bottom: 15px;
    font-size: 1.2rem;
    color: #2d3748;
    flex-shrink: 0; /* 防止标题被压缩 */
}

.component p {
    margin: 0;
    line-height: 1.5;
    flex-grow: 1; /* 让描述文字占据剩余空间 */
    font-size: 0.95rem;
    color: #4a5568;
    /* 移除overflow: hidden和align-items */
}

/* Results grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 固定3列，因为Experimental Results有3个结果 */
    gap: 30px;
    margin-top: 50px;
}

.result-item {
    background: linear-gradient(135deg, #f0fff4, #e6fffa);
    padding: 25px;
    border-radius: 20px;
    border-left: 6px solid #38a169;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    height: auto; /* 改为自适应高度 */
    min-height: 180px; /* 设置最小高度 */
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* 改为顶部对齐 */
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.result-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #38a169, #48bb78);
}

.result-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.12);
}

.result-item h4 {
    margin-bottom: 15px;
    font-size: 1.2rem;
    color: #2d3748;
    flex-shrink: 0; /* 防止标题被压缩 */
}

.result-item p {
    margin: 0;
    line-height: 1.5;
    flex-grow: 1; /* 让描述文字占据剩余空间 */
    font-size: 0.95rem;
    color: #4a5568;
    /* 移除overflow: hidden和align-items */
}

/* Contributions grid - 改进排版使其更整齐 */
.contributions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 固定4列，因为Key Contributions有4个贡献 */
    gap: 30px;
    margin-top: 50px;
}

.contribution {
    text-align: center;
    padding: 30px 25px;
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    height: auto; /* 改为自适应高度 */
    min-height: 220px; /* 设置最小高度 */
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* 改为顶部对齐 */
    align-items: center;
    position: relative;
    overflow: hidden;
}

.contribution::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.contribution:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.contribution-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    flex-shrink: 0; /* 防止图标被压缩 */
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    transition: all 0.3s ease;
}

.contribution:hover .contribution-icon {
    transform: scale(1.1);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

.contribution h4 {
    margin-bottom: 15px;
    font-size: 1.2rem;
    color: #2d3748;
    flex-shrink: 0; /* 防止标题被压缩 */
}

.contribution p {
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
    flex-grow: 1;
    color: #4a5568;
    /* 移除overflow: hidden和align-items */
}

/* Applications grid */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 固定3列，因为Applications有3个应用 */
    gap: 30px;
    margin-top: 50px;
}

.application {
    text-align: center;
    padding: 30px;
    background: linear-gradient(135deg, #f7fafc, #edf2f7);
    border-radius: 20px;
    transition: all 0.3s ease;
    height: auto;
    min-height: 200px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
}

.application::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.application:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.12);
    background: linear-gradient(135deg, #edf2f7, #e2e8f0);
}

.application i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.application:hover i {
    transform: scale(1.1);
    color: #764ba2;
}

/* Citation */
.citation-box {
    background: linear-gradient(135deg, #f7fafc, #edf2f7);
    border-radius: 15px;
    overflow: hidden;
    margin-top: 30px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
}

.citation-box pre {
    margin: 0;
    padding: 30px;
    background: linear-gradient(135deg, #2d3748, #4a5568);
    color: #e2e8f0;
    font-family: 'Fira Code', 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    overflow-x: auto;
    cursor: pointer;
    transition: all 0.3s ease;
}

.citation-box pre:hover {
    background: linear-gradient(135deg, #1a202c, #2d3748);
}

.citation-box code {
    color: inherit;
}

/* Contact */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 600px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px;
    background: linear-gradient(135deg, #f7fafc, #edf2f7);
    border-radius: 15px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.12);
}

.contact-item i {
    color: #667eea;
    font-size: 1.4rem;
    width: 25px;
}

.contact-item a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.contact-item a:hover {
    color: #764ba2;
    text-decoration: underline;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #2d3748, #4a5568);
    color: #e2e8f0;
    text-align: center;
    padding: 50px 0;
    margin-top: 100px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.footer .note {
    font-size: 0.95rem;
    opacity: 0.8;
    margin-top: 15px;
}

/* Responsive design */
@media (max-width: 768px) {
    .title {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.25rem;
    }
    
    .authors {
        font-size: 1rem;
    }
    
    .author {
        display: block;
        margin: 5px 0;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    /* 移动端图片优化 */
    .figure img {
        max-width: 95%; /* 移动端图片可以更大一些 */
    }
    
    .overview-image,
    .results-image {
        max-width: 95%;
    }
    
    .architecture-image {
        max-width: 60% !important; /* 架构图片在移动端调整到60% */
    }
    
    .figure .architecture-image {
        max-width: 60% !important;
        width: 60% !important;
    }
    
    .architecture-section .figure img.architecture-image {
        max-width: 60% !important;
        width: 60% !important;
    }
    
    .method-details {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .stage-number {
        width: 30px;
        height: 30px;
        font-size: 1rem;
    }
    
    .components-grid {
        grid-template-columns: repeat(2, 1fr); /* 平板端2列 */
        gap: 20px;
    }
    
    .results-grid {
        grid-template-columns: repeat(2, 1fr); /* 平板端2列 */
        gap: 20px;
    }
    
    .contributions-grid {
        grid-template-columns: repeat(2, 1fr); /* 平板端2列 */
        gap: 20px;
    }
    
    .applications-grid {
        grid-template-columns: repeat(2, 1fr); /* 平板端2列 */
        gap: 20px;
    }
    
    /* 移动端卡片高度调整 */
    .component {
        height: auto;
        min-height: 170px;
    }
    
    .result-item {
        height: auto;
        min-height: 150px;
    }
    
    .contribution {
        height: auto;
        min-height: 200px;
    }
    
    .links {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .header {
        padding: 40px 0;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .main {
        padding: 40px 0;
    }
    
    section {
        margin-bottom: 60px;
    }
    
    .figure img {
        max-width: 100%; /* 小屏时全宽显示 */
    }
    
    .overview-image,
    .architecture-image,
    .results-image {
        max-width: 60% !important;
    }
    
    .figure .architecture-image {
        max-width: 60% !important;
        width: 60% !important;
    }
    
    .architecture-section .figure img.architecture-image {
        max-width: 60% !important;
        width: 60% !important;
    }
    
    .components-grid {
        grid-template-columns: 1fr; /* 手机端1列 */
        gap: 15px;
    }
    
    .results-grid {
        grid-template-columns: 1fr; /* 手机端1列 */
        gap: 15px;
    }
    
    .contributions-grid {
        grid-template-columns: 1fr; /* 手机端1列 */
        gap: 15px;
    }
    
    .applications-grid {
        grid-template-columns: 1fr; /* 手机端1列 */
        gap: 15px;
    }
    
    .stage,
    .component,
    .result-item,
    .contribution,
    .application {
        padding: 15px;
    }
    
    /* 小屏幕卡片高度调整 */
    .component {
        height: auto;
        min-height: 140px;
    }
    
    .result-item {
        height: auto;
        min-height: 130px;
    }
    
    .contribution {
        height: auto;
        min-height: 180px;
    }
}

/* 移动端架构图片样式 */
@media (max-width: 768px) {
    .architecture-image {
        max-width: 60% !important;
    }
    
    .figure .architecture-image {
        max-width: 60% !important;
        width: 60% !important;
    }
    
    .architecture-section .figure img.architecture-image {
        max-width: 60% !important;
        width: 60% !important;
    }
}

@media (max-width: 480px) {
    .architecture-image {
        max-width: 60% !important;
    }
    
    .figure .architecture-image {
        max-width: 60% !important;
        width: 60% !important;
    }
    
    .architecture-section .figure img.architecture-image {
        max-width: 60% !important;
        width: 60% !important;
    }
}