* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background-color: #000000;
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.navbar .project-title {
    font-family: 'Playfair Display', 'Cormorant Garamond', 'Allura', serif;
    font-size: 1.6rem;
    font-style: italic;
    font-weight: 600;
    margin: 0;
    letter-spacing: 0.02em;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: #ffffff;
    text-decoration: none;
    font-size: 0.9rem;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.7;
}

/* 主容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* 背景视频 */
.background-video-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    opacity: 1;
    transition: opacity 1s ease-out;
}

.background-video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 2s ease-in-out;
}

.background-video-container video.active {
    opacity: 1;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0.7) 100%);
    pointer-events: none;
}

.background-video-container.fade-out {
    opacity: 0;
}

/* 标题区域 */
.header {
    min-height: 100vh;
    padding: 8rem 0 4rem;
    text-align: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.project-title {
    font-family: 'Playfair Display', 'Cormorant Garamond', 'Allura', serif;
    font-size: 4.5rem;
    font-weight: 600;
    font-style: italic;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff 0%, #d8d8d8 40%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.03em;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.12);
    transform: perspective(150px) rotateX(2deg);
}

.project-subtitle {
    font-size: 1.7rem;
    color: #aaaaaa;
    margin-bottom: 2rem;
    font-weight: 300;
}

.authors {
    font-size: 1rem;
    color: #888888;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.author-names {
    margin-bottom: 1rem;
    text-align: center;
}

.author-line {
    display: block;
    margin-bottom: 0.8rem;
    line-height: 1.6;
}

.author-link {
    color: #cccccc;
    text-decoration: none;
    transition: opacity 0.3s;
    font-size: 1.1rem;
    font-weight: 400;
}

.author-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.author-line a + sup {
    margin-right: 0.8em;
}

.author-line sup {
    margin-left: 0.1em;
}

.author-affiliations {
    color: #aaaaaa;
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.author-notes {
    color: #666666;
    font-size: 0.85rem;
    line-height: 1.6;
}

.links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: #ffffff;
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.3s;
}

.link-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

/* 分隔符 */
.divider {
    text-align: center;
    padding: 3rem 0;
    font-size: 1.2rem;
    color: #666666;
    letter-spacing: 0.5em;
}

/* 摘要部分 */
.section {
    padding: 4rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
}

.abstract {
    max-width: 950px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #dddddd;
    text-align: justify;
}

.abstract strong {
    color: #ffffff;
    font-weight: 600;
}

.abstract strong em {
    font-style: italic;
}

/* Method Overview */
.method-overview {
    max-width: 1100px;
    margin: 0 auto;
}

.method-image {
    width: 100%;
    margin-bottom: 2rem;
    text-align: center;
}

.method-image img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.method-description {
    max-width: 960px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #dddddd;
    text-align: justify;
}

/* 视频展示区域 */
.video-section {
    padding: 4rem 0;
}

/* 减少相邻video-section之间的间距 */
.video-section:not(:last-child) {
    padding-bottom: 0.5rem;
}

.video-section + .video-section {
    padding-top: 0.5rem;
}

.video-container {
    margin: 1rem 0;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
    position: relative;
}

/* Demo Tabs */
.demo-tabs-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    position: relative;
}

.demo-tabs {
    display: flex;
    gap: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 0.5rem;
}

.demo-nav-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    color: #ffffff;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
}

.demo-nav-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

.demo-nav-btn:active {
    transform: scale(0.95);
}

.demo-tab {
    background: transparent;
    border: none;
    color: #aaaaaa;
    font-size: 1rem;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: all 0.3s;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-family: inherit;
}

.demo-tab:hover {
    color: #ffffff;
}

.demo-tab.active {
    color: #ffffff;
    border-bottom-color: #ffffff;
}

/* Demo Content */
.demo-content {
    display: none;
    animation: fadeIn 0.5s ease-in;
}

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

.video-container:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.video-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #ffffff;
}

.video-description {
    font-size: 1rem;
    color: #aaaaaa;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 比例 */
    background: #000000;
    border-radius: 8px;
    overflow: hidden;
}

.video-wrapper video,
.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* 交互式视频播放器 */
.interactive-video-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
}

.video-player-section {
    width: 100%;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background-color: #000;
}

.video-player-section video {
    width: 100%;
    display: block;
    border-radius: 8px;
}

/* 分镜列表 */
.scenes-list {
    width: 100%;
    height: 90px;
    overflow-x: auto;
    overflow-y: hidden;
    background-color: rgba(30, 30, 30, 0.9);
    border-radius: 8px;
    display: flex;
    flex-direction: row;
    padding: 5px;
}

.scene-item {
    display: flex;
    flex-direction: column;
    padding: 5px;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    cursor: pointer;
    transition: background-color 0.2s;
    min-width: 100px;
    max-width: 100px;
    border-radius: 4px;
    margin: 0 2px;
    align-items: flex-start;
    justify-content: flex-start;
}

.scene-item:hover,
.scene-item.active {
    background-color: rgba(255, 255, 255, 0.15);
}

.scene-thumbnail {
    width: auto;
    display: inline-block;
    margin: 0 0 4px 0;
    border-radius: 4px;
    overflow: hidden;
    background-color: #0f1112;
    text-align: left;
}

.scene-thumbnail img {
    border-radius: 0;
    display: block;
    width: auto;
    height: auto;
    max-width: 60px;
    object-fit: contain;
}

.scene-info {
    width: 100%;
    text-align: left;
}

.scene-title,
.scene-description {
    font-size: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.scene-description {
    color: #a0a0a0;
}

/* 视频控制条 */
.video-controls {
    position: relative;
    margin-top: -5px;
}

.video-timeline {
    position: relative;
    height: 6px;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.2);
    cursor: pointer;
    border-radius: 3px;
}

.video-progress {
    position: absolute;
    height: 100%;
    width: 0%;
    background-color: #fff;
    border-radius: 3px;
    transition: width 0.1s ease;
}

.video-time {
    color: #fff;
    font-size: 16px;
    margin-top: 4px;
    text-align: right;
}

/* Shot文本面板 */
.shot-text-panel {
    width: 100%;
    background-color: rgba(30, 30, 30, 0.9);
    border-radius: 8px;
    overflow: hidden;
    margin-top: 5px;
}

.shot-text-header {
    padding: 12px 16px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s;
    user-select: none;
}

.shot-text-header:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.shot-text-header .expand-icon {
    transition: transform 0.3s;
    font-size: 12px;
}

.shot-text-panel.expanded .expand-icon {
    transform: rotate(180deg);
}

.shot-text-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 16px;
}

.shot-text-panel.expanded .shot-text-content {
    max-height: 500px;
    padding: 12px 16px;
}

.shot-text-content p {
    margin: 0;
    color: #dddddd;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 滚动条样式 */
.scenes-list::-webkit-scrollbar {
    height: 6px;
}

.scenes-list::-webkit-scrollbar-track {
    background: #1a1e21;
    border-radius: 3px;
}

.scenes-list::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
}

.scenes-list::-webkit-scrollbar-thumb:hover {
    background-color: rgba(255, 255, 255, 0.5);
}

/* 高亮区域 */
.highlight-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.highlight-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s;
}

.highlight-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.highlight-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.highlight-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.highlight-desc {
    color: #aaaaaa;
    line-height: 1.6;
}

/* BibTeX Citation */
.bibtex-container {
    max-width: 900px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s;
}

.bibtex-container:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.bibtex-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.bibtex-header span {
    font-weight: 600;
    color: #ffffff;
    font-size: 1rem;
}

.copy-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: #ffffff;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

.copy-btn:active {
    transform: scale(0.98);
}

.bibtex-content {
    padding: 1.5rem;
    margin: 0;
    background: rgba(0, 0, 0, 0.3);
    color: #dddddd;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre;
    text-align: left;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 4rem 0 2rem;
    color: #666666;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 4rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .project-title {
        font-size: 2.8rem;
        transform: none;
        letter-spacing: 0.02em;
    }

    .project-subtitle {
        font-size: 1.4rem;
    }

    .container {
        padding: 0 1rem;
    }

    .header {
        min-height: 100vh;
        padding: 6rem 0 3rem;
    }
    
    .background-video-container {
        height: 100vh;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.85rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .highlight-grid {
        grid-template-columns: 1fr;
        max-width: 100%;
    }

    .bibtex-content {
        font-size: 0.8rem;
        padding: 1rem;
    }

    .demo-tabs-wrapper {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .demo-nav-btn {
        width: 35px;
        height: 35px;
        font-size: 1.2rem;
    }

    .demo-main-title h2 {
        font-size: 1.5rem;
    }

    .scene-item {
        min-width: 120px;
        max-width: 120px;
    }

    .scene-thumbnail {
        width: 100px;
        height: 55px;
    }

    .scene-thumbnail img {
        max-width: 100px;
    }
}

@media (max-width: 480px) {
    .scene-item {
        min-width: 100px;
        max-width: 100px;
    }

    .scene-thumbnail {
        width: 80px;
        height: 45px;
    }

    .scene-thumbnail img {
        max-width: 80px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #000000;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* MR2V Section Styles */
.mr2v-tabs-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    position: relative;
}

.mr2v-tabs {
    display: flex;
    gap: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 0.5rem;
}

.mr2v-nav-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    color: #ffffff;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
}

.mr2v-nav-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

.mr2v-nav-btn:active {
    transform: scale(0.95);
}

.mr2v-tab {
    background: transparent;
    border: none;
    color: #aaaaaa;
    font-size: 1rem;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: all 0.3s;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-family: inherit;
}

.mr2v-tab:hover {
    color: #ffffff;
}

.mr2v-tab.active {
    color: #ffffff;
    border-bottom-color: #ffffff;
}

.mr2v-page {
    display: none;
    animation: fadeIn 0.5s ease-in;
}

.mr2v-page.active {
    display: block;
}

.mr2v-layout {
    display: flex;
    gap: 2rem;
    align-items: center;
    min-height: 400px;
}

.mr2v-images {
    flex: 0 0 25%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.mr2v-image-item {
    width: 100%;
    max-width: 300px;
    border-radius: 8px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.mr2v-image-item img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.mr2v-image-label {
    font-size: 1rem;
    font-weight: 600;
    color: #aaaaaa;
    text-align: center;
    margin-top: 0.5rem;
    font-style: italic;
}

.mr2v-video {
    flex: 1;
    min-width: 0;
}

.mr2v-video .video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 比例 */
    background: #000000;
    border-radius: 8px;
    overflow: hidden;
}

.mr2v-video .video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Responsive styles for MR2V */
@media (max-width: 1024px) {
    .mr2v-layout {
        flex-direction: column;
        gap: 2rem;
    }
    
    .mr2v-images {
        flex: 1;
        width: 100%;
        flex-direction: row;
        justify-content: center;
    }
    
    .mr2v-image-item {
        max-width: 200px;
    }
    
    .mr2v-video {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .mr2v-tabs-wrapper {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .mr2v-nav-btn {
        width: 35px;
        height: 35px;
        font-size: 1.2rem;
    }
    
    .mr2v-images {
        flex-direction: column;
    }
    
    .mr2v-image-item {
        max-width: 100%;
    }
}

/* Generalization & More Results Section Styles */
.generalization-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.generalization-item {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
}

.generalization-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.generalization-title {
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    text-align: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.generalization-item .video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 比例 */
    background: #000000;
    border-radius: 8px;
    overflow: hidden;
}

.generalization-item .video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Responsive styles for generalization grid */
@media (max-width: 1200px) {
    .generalization-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .generalization-grid {
        grid-template-columns: 1fr;
    }
}

/* Comparison Section Styles */
.comparison-tabs-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    position: relative;
}

.comparison-tabs {
    display: flex;
    gap: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 0.5rem;
}

.comparison-nav-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    color: #ffffff;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
}

.comparison-nav-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

.comparison-nav-btn:active {
    transform: scale(0.95);
}

.comparison-tab {
    background: transparent;
    border: none;
    color: #aaaaaa;
    font-size: 1rem;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: all 0.3s;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-family: inherit;
}

.comparison-tab:hover {
    color: #ffffff;
}

.comparison-tab.active {
    color: #ffffff;
    border-bottom-color: #ffffff;
}

.comparison-page {
    display: none;
    animation: fadeIn 0.5s ease-in;
}

.comparison-page.active {
    display: block;
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.comparison-item {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
}

.comparison-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.comparison-method-title {
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    text-align: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.comparison-item .video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 比例 */
    background: #000000;
    border-radius: 8px;
    overflow: hidden;
}

.comparison-item .video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Responsive styles for comparison grid */
@media (max-width: 1200px) {
    .comparison-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-tabs-wrapper {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .comparison-nav-btn {
        width: 35px;
        height: 35px;
        font-size: 1.2rem;
    }
}