/* 智算竞赛网站样式 - 简约淡色系风格 */

/* 基础重置和变量定义 */
:root {
    /* 颜色方案 - 淡色系 */
    --primary-light: #e6f7ff;
    --primary-main: #1890ff;
    --primary-dark: #096dd9;

    --background: #ffffff;
    --surface: #f8f9fa;
    --surface-light: #fafafa;
    --surface-dark: #f0f0f0;

    --text-primary: #262626;
    --text-secondary: #8c8c8c;
    --text-disabled: #bfbfbf;

    --border-light: #e8e8e8;
    --border-main: #d9d9d9;

    --success: #52c41a;
    --warning: #faad14;
    --error: #ff4d4f;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* 字体 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.5rem;
    --font-size-xl: 2rem;
    --font-size-xxl: 2.5rem;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background-color: var(--background);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 顶部标题区域 */
.header {
    background: linear-gradient(135deg, var(--primary-light) 0%, #f0f9ff 100%);
    padding: var(--spacing-xl) 0;
    text-align: center;
    border-bottom: 1px solid var(--border-light);
}

.site-title {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.5px;
}

.site-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 400;
}

.external-link {
    margin-top: var(--spacing-md);
}

.official-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-main);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--primary-main);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.official-link:hover {
    background-color: var(--primary-main);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 主内容区域布局 */
.main-content {
    padding: var(--spacing-xl) 0;
}

.content-wrapper {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.main-sections {
    flex: 1;
    min-width: 300px;
}

.news-sidebar {
    width: 250px;
    min-width: 220px;
}

/* 模块通用样式 */
.module {
    background-color: var(--surface-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: box-shadow 0.3s ease;
}

.module:hover {
    box-shadow: var(--shadow-md);
}

.module-title {
    font-size: var(--font-size-lg);
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-light);
}

.module-title i {
    color: var(--primary-main);
}

/* 赛题筛选卡片 */
.cards-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

@media (max-width: 1024px) {
    .cards-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.topic-card {
    background-color: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.topic-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

/* 视觉卡片样式 */
.topic-card.visual-card {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 250px;
    display: flex;
    align-items: flex-end;
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.topic-card.visual-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.3) 50%, rgba(0,0,0,0.1) 100%);
    z-index: 1;
    transition: opacity 0.3s ease;
}

.topic-card.visual-card:hover:before {
    opacity: 0.9;
}

.topic-card.visual-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-overlay {
    position: relative;
    z-index: 2;
    padding: var(--spacing-lg);
    color: white;
    width: 100%;
}

.card-overlay h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
    color: white;
}

.card-subtitle {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.card-btn {
    background-color: var(--primary-main);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 500;
    transition: all 0.3s ease;
}

.card-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

/* 赛题模态框 */
.topic-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.topic-modal.active {
    display: flex;
}

.topic-modal .modal-content {
    background-color: white;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.topic-modal .modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    background-color: white;
    z-index: 1;
    border-top-left-radius: var(--radius-lg);
    border-top-right-radius: var(--radius-lg);
}

.topic-modal .modal-header h3 {
    color: var(--primary-dark);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.topic-modal .modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.topic-modal .modal-close:hover {
    background-color: var(--surface);
    color: var(--text-primary);
}

.topic-modal .modal-body {
    padding: var(--spacing-lg);
}

.topic-modal .topic-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-sm);
}

.topic-modal .topic-list li {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.topic-modal .topic-list li:hover {
    background-color: var(--surface-light);
    transform: translateX(4px);
}

.topic-modal .topic-list a {
    color: var(--text-primary);
    text-decoration: none;
    display: block;
    padding: var(--spacing-xs) 0;
}

.topic-modal .topic-list a:hover {
    color: var(--primary-main);
}

.topic-modal .topic-list a:before {
    content: "›";
    color: var(--primary-main);
    margin-right: var(--spacing-xs);
}

.card-header {
    padding: var(--spacing-md);
    background-color: var(--surface);
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: var(--font-size-md);
    color: var(--text-primary);
    margin: 0;
}

.card-header i {
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.card-header.active i {
    transform: rotate(180deg);
}

.card-content {
    padding: var(--spacing-md);
    background-color: white;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.card-content.active {
    max-height: 500px;
}

.topic-list {
    list-style: none;
}

.topic-list li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px dashed var(--border-light);
}

.topic-list li:last-child {
    border-bottom: none;
}

.topic-list a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.topic-list a:hover {
    color: var(--primary-main);
}

.topic-list a:before {
    content: "›";
    color: var(--primary-main);
}

/* 竞赛组织标签页 */
.tabs-container {
    background-color: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

.tabs-header {
    display: flex;
    flex-wrap: wrap;
    background-color: var(--surface);
    border-bottom: 1px solid var(--border-light);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    overflow: hidden;
}

.tab-btn {
    flex: 1;
    min-width: 120px;
    padding: var(--spacing-md) var(--spacing-sm);
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    border-right: 1px solid var(--border-light);
    position: relative;
}

.tab-btn:last-child {
    border-right: none;
}

.tab-btn:hover {
    background-color: var(--surface-light);
    color: var(--text-primary);
}

.tab-btn.active {
    background-color: white;
    color: var(--primary-main);
    font-weight: 600;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-main), var(--primary-dark));
    border-radius: 3px 3px 0 0;
}

.tab-btn i {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.tab-btn:hover i {
    transform: scale(1.1);
}

.tab-btn.active i {
    color: var(--primary-main);
    transform: scale(1.2);
}

.tab-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.count {
    background-color: var(--primary-light);
    color: var(--primary-main);
    font-size: var(--font-size-sm);
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 500;
    margin-top: var(--spacing-xs);
}

.tabs-content {
    padding: var(--spacing-lg);
}

.tab-pane {
    display: none;
    animation: fadeInUp 0.5s ease;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.resource-list {
    list-style: none;
}

.resource-list li {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border-light);
}

.resource-list li:last-child {
    border-bottom: none;
}

/* 资源列表中的链接样式 */
.resource-list li a {
    color: var(--primary-dark);
    text-decoration: none;
    display: block;
    padding: var(--spacing-xs) 0;
    transition: all 0.3s ease;
    position: relative;
}

.resource-list li a:hover {
    color: var(--primary-main);
    background-color: var(--surface-light);
    padding-left: var(--spacing-sm);
    transform: translateX(4px);
}

.resource-list li a:before {
    content: "›";
    color: var(--primary-main);
    margin-right: var(--spacing-xs);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.resource-list li a:hover:before {
    opacity: 1;
}

/* 正式竞赛模块 */
.competition-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

/* 社区规模小组卡片 */
.community-card {
    background-color: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    border: 1px solid var(--border-light);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.community-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary-main));
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.community-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.community-card:hover::before {
    opacity: 1;
}

.community-card .card-header {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-light);
}

.community-card .card-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.community-card .card-title h3 {
    color: var(--primary-dark);
    font-size: var(--font-size-md);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.community-card .card-title h3 i {
    color: var(--primary-main);
}

.community-card .group-link {
    color: var(--primary-main);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--primary-main);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.community-card .group-link:hover {
    background-color: var(--primary-main);
    color: white;
}

.community-card .card-tabs {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.community-card .tab-button {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font-family);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.3s ease;
    flex: 1;
    min-width: 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.community-card .tab-button:hover {
    background-color: var(--surface);
    color: var(--primary-main);
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.community-card .tab-button.active {
    background-color: var(--primary-light);
    color: var(--primary-main);
    border-color: var(--primary-main);
    font-weight: 600;
}

.community-card .tab-button.active::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-main), var(--primary-dark));
    border-radius: 3px 3px 0 0;
}

.community-card .card-body {
    padding-top: var(--spacing-sm);
}

.community-card .tab-content {
    animation: fadeIn 0.5s ease;
}

.community-card .tab-pane {
    display: none;
}

.community-card .tab-pane.active {
    display: block;
}

/* 微信交流群卡片 */
.wechat-section {
    background-color: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.wechat-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #09bb07, #7ac943); /* 微信绿色渐变 */
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.wechat-section:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: #e6f7e6;
}

.wechat-section:hover::before {
    opacity: 1;
}

.wechat-section h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.wechat-section h3 i {
    color: var(--primary-main);
}

.wechat-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

@media (max-width: 1024px) {
    .wechat-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

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


.wechat-card {
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.wechat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #09bb07, #7ac943);
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.wechat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: #e6f7e6;
}

.wechat-card:hover::before {
    opacity: 1;
}

.wechat-card h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.wechat-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.qrcode-placeholder {
    background-color: var(--surface);
    border: 2px dashed var(--border-main);
    border-radius: var(--radius-md);
    height: 150px;
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.join-btn {
    background-color: var(--primary-main);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 500;
    transition: all 0.3s ease;
    width: 100%;
}

.join-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.competition-card {
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.competition-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.competition-card h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.competition-card h3 i {
    color: var(--primary-main);
}

.competition-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.join-btn {
    background-color: var(--primary-main);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 500;
    transition: all 0.3s ease;
}

.join-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.qrcode-placeholder, .placeholder-img, .award-img, .case-img {
    background-color: var(--surface);
    border: 2px dashed var(--border-main);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.qrcode-placeholder {
    height: 200px;
    margin-top: var(--spacing-md);
}

.placeholder-img, .award-img, .case-img {
    width: 100%;
    height: 100%;
    padding: var(--spacing-md);
}

.placeholder-img i, .award-img i, .case-img i {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-disabled);
}

.upload-hint {
    font-size: var(--font-size-sm);
    color: var(--text-disabled);
    margin-top: var(--spacing-xs);
    font-style: italic;
}

/* 作品转化模块 */
.works-subsection {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
}

.works-subsection:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.works-subsection h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.year-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.year-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font-family);
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.year-btn:hover {
    background-color: var(--surface-light);
    color: var(--text-primary);
}

.year-btn.active {
    background-color: var(--primary-main);
    color: white;
    border-color: var(--primary-main);
}

.awards-carousel {
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border-light);
}

.carousel-container {
    display: block;
    overflow-x: visible;
    padding: var(--spacing-sm) 0;
}

.carousel-slide {
    display: none;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-md);
}

.carousel-slide.active {
    display: grid;
}

.award-item {
    /* min-width: 120px; */
    /* flex-shrink: 0; */
}

.award-img {
    height: 170px;
    padding: 6px;
}

.award-img img {
    width: 100%;
    height: 100%;
    object-fit: scale-down;
    border-radius: var(--radius-md);
    background-color: #f8f9fa;
    transition: transform 0.3s ease;
}

.award-img:hover img {
    transform: scale(1.05);
}

/* 科学任务案例 */
.case-card {
    display: flex;
    gap: var(--spacing-lg);
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    align-items: center;
    flex-wrap: wrap;
}

.case-img {
    width: 200px;
    height: 150px;
    flex-shrink: 0;
}

.case-img img {
    width: 100%;
    height: 100%;
    object-fit: scale-down;
    border-radius: var(--radius-md);
    background-color: #f8f9fa;
    transition: transform 0.3s ease;
}

.case-img:hover img {
    transform: scale(1.05);
}

.case-info {
    flex: 1;
    min-width: 300px;
}

.case-info h4 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-main);
    text-decoration: none;
    font-weight: 500;
    margin-top: var(--spacing-sm);
    transition: all 0.3s ease;
}

.case-link:hover {
    color: var(--primary-dark);
    gap: var(--spacing-sm);
}

/* 优秀成果展示 */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.achievement-card {
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.achievement-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.achievement-card h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
    line-height: 1.5;
}

.author {
    color: #a0a0a0;
    font-weight: 400;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.journal {
    color: var(--primary-dark);
    font-size: var(--font-size-md);
    font-weight: 700;
    font-style: normal;
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--primary-light);
    border-radius: var(--radius-sm);
    border: none;
    order: -1;
}

/* 优秀成果展示垂直布局 */
.achievements-vertical {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.achievement-card-vertical {
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.achievement-card-vertical:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.paper-cover {
    background-color: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    width: 140px;
    height: 190px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    padding: var(--spacing-sm);
    overflow: hidden;
}

.paper-cover i {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-disabled);
}

.paper-cover img {
    width: 100%;
    height: 100%;
    object-fit: scale-down;
    border-radius: var(--radius-md);
    background-color: #f8f9fa;
    transition: transform 0.3s ease;
}

.paper-cover:hover img {
    transform: scale(1.05);
}

.paper-info {
    flex: 1;
}

.paper-title {
    color: #a0a0a0;
    text-decoration: none;
    font-size: var(--font-size-sm);
    line-height: 1.5;
    margin-bottom: var(--spacing-xs);
    display: block;
    font-weight: 400;
    transition: color 0.3s ease;
}

.paper-title:hover {
    color: var(--primary-main);
}

.author {
    color: #a0a0a0;
    font-weight: 400;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

@media (max-width: 768px) {
    .achievement-card-vertical {
        flex-direction: column;
    }

    .paper-cover {
        width: 100%;
        height: 120px;
    }
}

/* 图片上传模块 */
.upload-module {
    background-color: #f0f9ff;
    border: 2px dashed var(--primary-light);
}

.upload-info {
    text-align: center;
    padding: var(--spacing-md);
}

.upload-link {
    color: var(--primary-main);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.upload-link:hover {
    color: var(--primary-dark);
    border-bottom-color: var(--primary-main);
}

/* 新闻侧边栏 */
.news-sidebar {
    background-color: var(--surface-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    height: fit-content;
    position: sticky;
    top: var(--spacing-lg);
    width: 250px;
}

.news-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-light);
}

.news-header h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.news-subtitle {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.news-container {
    position: relative;
}

.news-scroll {
    height: 300px;
    overflow-y: hidden;
    position: relative;
}

.news-item {
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    line-height: 1.3;
}

.news-item:hover {
    transform: translateX(4px);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.news-item h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
    line-height: 1.2;
}

.news-date {
    color: var(--text-secondary);
    font-size: 0.7rem;
    margin-bottom: var(--spacing-xs);
}

.news-desc {
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin-bottom: var(--spacing-xs);
    line-height: 1.2;
}

.news-link {
    color: var(--primary-main);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all 0.3s ease;
}

.news-link:hover {
    color: var(--primary-dark);
    gap: var(--spacing-sm);
}

.news-controls {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-light);
}

.news-controls button {
    flex: 1;
    padding: var(--spacing-sm);
    background-color: white;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font-family);
    color: var(--text-secondary);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.news-controls button:hover {
    background-color: var(--surface);
    color: var(--text-primary);
}

.news-controls button#news-pause:hover {
    background-color: var(--warning);
    color: white;
    border-color: var(--warning);
}

.news-controls button#news-add:hover {
    background-color: var(--primary-main);
    color: white;
    border-color: var(--primary-main);
}

/* 页脚 */
.footer {
    background-color: var(--surface-dark);
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 1px solid var(--border-light);
    margin-top: var(--spacing-xl);
}

.footer p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.footer-note {
    font-size: var(--font-size-sm);
    color: var(--text-disabled);
    margin-top: var(--spacing-sm);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .content-wrapper {
        flex-direction: column;
    }

    .news-sidebar {
        width: 100%;
        position: static;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .site-title {
        font-size: var(--font-size-xl);
    }

    .site-subtitle {
        font-size: var(--font-size-md);
    }

    .cards-container {
        grid-template-columns: 1fr;
    }

    .tabs-header {
        flex-direction: column;
    }

    .tab-btn {
        border-right: none;
        border-bottom: 1px solid var(--border-light);
    }

    .competition-cards {
        grid-template-columns: 1fr;
    }

    .case-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .case-img {
        width: 100%;
        height: 200px;
    }

    .achievements-grid {
        grid-template-columns: 1fr;
    }

    .carousel-slide {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
    }

    .news-scroll {
        height: 300px;
    }

    .award-item {
        /* min-width: 100px; */
    }

    .award-img {
        height: 140px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: var(--spacing-lg) 0;
    }

    .module {
        padding: var(--spacing-md);
    }

    .module-title {
        font-size: var(--font-size-md);
    }

    .carousel-container {
        overflow-x: visible;
        overflow-y: auto;
    }

    .carousel-slide {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .award-item {
        /* min-width: 100%; */
        margin-bottom: var(--spacing-sm);
    }

    .award-img {
        height: 140px;
    }
}

/* 科学发现模块 */
.discovery-module {
    /* 继承.module样式 */
}

.discovery-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.discovery-card {
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-main);
}

.discovery-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.discovery-card-content {
    font-size: var(--font-size-base);
    line-height: 1.6;
    margin: 0;
}

/* 不同颜色的卡片文字 */
.discovery-card.color-1 .discovery-card-content {
    color: #1890ff; /* 蓝色 */
}

.discovery-card.color-2 .discovery-card-content {
    color: #52c41a; /* 绿色 */
}

.discovery-card.color-3 .discovery-card-content {
    color: #fa8c16; /* 橙色 */
}

.discovery-card.color-4 .discovery-card-content {
    color: #722ed1; /* 紫色 */
}

.discovery-card.color-5 .discovery-card-content {
    color: #13c2c2; /* 青色 */
}

.discovery-card.color-6 .discovery-card-content {
    color: #f759ab; /* 粉色 */
}

.discovery-card.color-7 .discovery-card-content {
    color: #fa541c; /* 红色 */
}

.discovery-card.color-8 .discovery-card-content {
    color: #2f54eb; /* 深蓝色 */
}

.discovery-card.color-9 .discovery-card-content {
    color: #73d13d; /* 浅绿色 */
}

.discovery-card.color-10 .discovery-card-content {
    color: #ff7a45; /* 橙红色 */
}

/* 响应式设计 */
@media (max-width: 768px) {
    .discovery-card {
        padding: var(--spacing-md);
    }
}

/* 社区规模小组新样式 */
.task-outline {
    list-style-type: none;
    padding-left: 0;
}

.task-outline > li {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--primary-light);
}

.task-outline > li > strong {
    color: var(--primary-dark);
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-base);
}

.task-outline ul {
    list-style-type: none;
    padding-left: var(--spacing-md);
    margin-top: var(--spacing-xs);
}

.task-outline ul li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    position: relative;
}

.task-outline ul li:before {
    content: "•";
    color: var(--primary-main);
    position: absolute;
    left: -0.8rem;
}

.solution-cases {
    list-style-type: none;
    padding-left: 0;
}

.solution-cases ul,
.solution-cases ol {
    list-style-type: none;
    padding-left: 0;
}

.solution-cases > li {
    margin-bottom: var(--spacing-lg);
}

.solution-cases > li > strong {
    color: var(--primary-dark);
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-base);
}

.solution-cases ul ul {
    padding-left: var(--spacing-lg);
}

.solution-cases li li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    line-height: 1.5;
}

.solution-cases li li:before {
    content: "—";
    color: var(--primary-main);
    margin-right: var(--spacing-xs);
}

.resource-list {
    list-style-type: none;
    padding-left: 0;
}

.resource-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    background-color: var(--surface-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.resource-item:hover {
    background-color: white;
    border-color: var(--primary-light);
    transform: translateX(4px);
}

.resource-title {
    flex: 1;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.resource-list .resource-item .download-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--primary-main);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all 0.3s ease;
    white-space: nowrap;
    margin-left: var(--spacing-md);
    display: inline-block; /* 覆盖通用样式中的 display: block */
    /* 覆盖.resource-list li a 样式 */
    position: static;
    padding: var(--spacing-xs) var(--spacing-sm) !important;
    color: white !important;
    background-color: var(--primary-main) !important;
}

.resource-list .resource-item .download-btn:hover {
    background-color: var(--primary-dark) !important;
    color: white !important;
    transform: translateY(-2px);
    padding-left: var(--spacing-sm) !important;
    /* 覆盖.resource-list li a:hover 样式 */
    background-color: var(--primary-dark) !important;
    padding-left: var(--spacing-sm) !important;
    transform: translateY(-2px) !important;
}

.discussion-list {
    list-style-type: none;
    padding-left: 0;
}

.discussion-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    background-color: var(--surface-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    flex-wrap: wrap;
}

.discussion-item:hover {
    background-color: white;
    border-color: var(--primary-light);
    transform: translateX(4px);
}

.discussion-title {
    flex: 1;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    min-width: 200px;
}

.discussion-time {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin: 0 var(--spacing-md);
    white-space: nowrap;
}

.reply-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--success);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.reply-btn:hover {
    background-color: #389e0d;
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .resource-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    .resource-list .resource-item .download-btn {
        margin-left: 0;
        align-self: flex-end;
    }

    .discussion-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    .discussion-title {
        min-width: auto;
    }

    .discussion-time {
        margin: 0;
        align-self: flex-start;
    }

    .reply-btn {
        align-self: flex-end;
    }
}

/* 社区规模小组美化样式 */
.community-card .tab-pane.active {
    padding: var(--spacing-md);
    background-color: var(--surface-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    margin-top: var(--spacing-sm);
}

.community-card .tab-pane.active > p:first-child {
    color: var(--primary-dark);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border-light);
}

/* 任务详情样式 */
#task-details-content {
    line-height: 1.7;
}

#task-details-content li {
    background-color: white;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-main);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

#task-details-content li:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--primary-dark);
}

/* 求解案例样式增强 */
.solution-cases {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    max-height: 400px;
    overflow-y: auto;
}

.solution-cases::-webkit-scrollbar {
    width: 6px;
}

.solution-cases::-webkit-scrollbar-track {
    background: var(--surface);
    border-radius: 3px;
}

.solution-cases::-webkit-scrollbar-thumb {
    background: var(--border-main);
    border-radius: 3px;
}

.solution-cases::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.view-details-container {
    margin-top: var(--spacing-md);
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-light);
}

.view-details-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--primary-main);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid var(--primary-main);
}

.view-details-btn:hover {
    background-color: white;
    color: var(--primary-main);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.view-details-btn i {
    font-size: 0.9em;
}

/* 资源区样式增强 */
.resource-list {
    background-color: white;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
}

/* 讨论区样式增强 */
.discussion-list {
    background-color: white;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
}

/* 标签页内容通用样式 */
.community-card .tab-content {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 发表讨论按钮样式 */
.post-discussion-container {
    margin-top: var(--spacing-md);
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-light);
}

.post-discussion-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--warning);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid var(--warning);
}

.post-discussion-btn:hover {
    background-color: white;
    color: var(--warning);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.post-discussion-btn i {
    font-size: 0.9em;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .community-card .tab-pane.active {
        padding: var(--spacing-sm);
    }

    .solution-cases {
        max-height: 300px;
    }

    #task-details-content li {
        padding: var(--spacing-sm);
    }

    .view-details-btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    .post-discussion-btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
}

/* ======================== */
/* 新设计：竞赛组织资源共建共享 */
/* ======================== */

/* 标签页按钮新样式 */
.tabs-header {
    display: flex;
    flex-wrap: wrap;
    background-color: var(--surface);
    border-bottom: 1px solid var(--border-light);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    overflow: hidden;
}

.tab-btn {
    flex: 1;
    min-width: 120px;
    padding: var(--spacing-md) var(--spacing-sm);
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    border-right: 1px solid var(--border-light);
    position: relative;
}

.tab-btn:last-child {
    border-right: none;
}

.tab-btn:hover {
    background-color: var(--surface-light);
    color: var(--text-primary);
}

.tab-btn.active {
    background-color: white;
    color: var(--primary-main);
    font-weight: 600;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-main), var(--primary-dark));
    border-radius: 3px 3px 0 0;
}

.tab-btn i {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.tab-btn:hover i {
    transform: scale(1.1);
}

.tab-btn.active i {
    color: var(--primary-main);
    transform: scale(1.2);
}

.tab-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.count {
    background-color: var(--primary-light);
    color: var(--primary-main);
    font-size: var(--font-size-sm);
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 500;
    margin-top: var(--spacing-xs);
}

/* 资源网格布局 */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

/* 资源卡片 */
.resource-card {
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.resource-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary-main));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.resource-card:hover::before {
    opacity: 1;
}

.resource-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.resource-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-light), #e6f7ff);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-main);
    font-size: 1.3rem;
    transition: all 0.3s ease;
}

.resource-card:hover .resource-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, var(--primary-main), var(--primary-dark));
    color: white;
}

.resource-info {
    flex: 1;
}

.resource-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.resource-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
    flex: 1;
}

.resource-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-main);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--primary-light);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    background-color: var(--surface-light);
    align-self: flex-start;
}

.resource-link:hover {
    background-color: var(--primary-main);
    color: white;
    border-color: var(--primary-main);
    gap: var(--spacing-sm);
    transform: translateX(4px);
}

.resource-link i {
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.resource-link:hover i {
    transform: translateX(2px);
}

/* 查看全部卡片 */
.view-all-card {
    background: linear-gradient(135deg, var(--surface-light), #f0f9ff);
    border: 2px dashed var(--primary-light);
}

.view-all-card:hover {
    background: linear-gradient(135deg, var(--primary-light), #e6f7ff);
    border-color: var(--primary-main);
}

.view-all-card .resource-icon {
    background: linear-gradient(135deg, var(--surface), var(--surface-light));
    color: var(--text-secondary);
}

.view-all-card:hover .resource-icon {
    background: linear-gradient(135deg, var(--primary-main), var(--primary-dark));
    color: white;
}

.view-all-card .resource-link {
    background-color: white;
    border-color: var(--primary-main);
}

.view-all-card:hover .resource-link {
    background-color: var(--primary-main);
    color: white;
}

/* 标签页内容动画 */
.tab-pane {
    display: none;
    animation: fadeInUp 0.5s ease;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .resource-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
    .resource-grid.user-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .tabs-header {
        flex-direction: column;
    }

    .tab-btn {
        flex-direction: row;
        justify-content: flex-start;
        padding: var(--spacing-sm);
        border-right: none;
        border-bottom: 1px solid var(--border-light);
        text-align: left;
        gap: var(--spacing-sm);
    }

    .tab-btn::after {
        display: none;
    }

    .tab-btn.active {
        border-left: 3px solid var(--primary-main);
    }

    .count {
        margin-top: 0;
        margin-left: auto;
    }

    .resource-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .resource-grid.user-stats-grid {
        grid-template-columns: 1fr;
    }

    .resource-card {
        padding: var(--spacing-md);
    }

    .resource-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
        margin-bottom: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .tab-btn {
        font-size: var(--font-size-sm);
    }

    .tab-label {
        font-size: var(--font-size-sm);
    }

    .count {
        font-size: var(--font-size-sm);
        padding: 1px 6px;
    }

    .resource-title {
        font-size: var(--font-size-sm);
    }

    .resource-desc {
        font-size: var(--font-size-sm);
    }
}
/* 颁奖现场轮播图样式 */

/* 颁奖现场轮播图样式 */
#banjiang-carousel .carousel-container {
    position: relative;
    overflow-x: hidden;
}

#banjiang-carousel .carousel-slide {
    display: none;
    flex-wrap: nowrap;
    gap: var(--spacing-md);
    transition: transform 0.5s ease-in-out;
}

#banjiang-carousel .carousel-slide.active {
    display: flex;
}

#banjiang-carousel .award-item {
    flex: 0 0 auto;
    width: calc(100% / 3 - var(--spacing-md) * 2 / 3); /* 3张图片可见 */
    min-width: 0;
}

#banjiang-carousel .award-img {
    height: 250px;
    padding: 8px;
}

#banjiang-carousel .award-img img {
    object-fit: contain;
}

#banjiang-carousel .carousel-prev,
#banjiang-carousel .carousel-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

#banjiang-carousel .carousel-prev:hover,
#banjiang-carousel .carousel-next:hover {
    background: rgba(0,0,0,0.8);
}

#banjiang-carousel .carousel-prev {
    left: 10px;
}

#banjiang-carousel .carousel-next {
    right: 10px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    #banjiang-carousel .award-item {
        width: calc(100% / 2 - var(--spacing-md) * 1 / 2); /* 平板2张图片可见 */
    }
    #banjiang-carousel .award-img {
        height: 200px;
    }
}

@media (max-width: 480px) {
    #banjiang-carousel .award-item {
        width: calc(100% / 1 - var(--spacing-md) * 0); /* 手机1张图片可见 */
    }
    #banjiang-carousel .award-img {
        height: 180px;
    }
}

/* 用户生态建设统计卡片 */
.resource-grid.user-stats-grid {
    grid-template-columns: repeat(3, 1fr);
}

.user-stats-grid .resource-card:nth-child(1) .resource-icon {
    background: linear-gradient(135deg, #ff6b6b, #ff8e8e);
    color: #fff;
}

.user-stats-grid .resource-card:nth-child(2) .resource-icon {
    background: linear-gradient(135deg, #4ecdc4, #88d3ce);
    color: #fff;
}

.user-stats-grid .resource-card:nth-child(3) .resource-icon {
    background: linear-gradient(135deg, #45b7d1, #96d9e6);
    color: #fff;
}

.user-stats-grid .resource-card:nth-child(4) .resource-icon {
    background: linear-gradient(135deg, #96ceb4, #b8e0d2);
    color: #fff;
}

.user-stats-grid .resource-card:nth-child(5) .resource-icon {
    background: linear-gradient(135deg, #ffd166, #ffe0a3);
    color: #fff;
}

.user-stats-grid .resource-card:nth-child(6) .resource-icon {
    background: linear-gradient(135deg, #9d4edd, #c77dff);
    color: #fff;
}

.user-stats-grid .resource-card:hover .resource-icon {
    transform: scale(1.15) rotate(10deg);
}

.user-stats-grid .resource-desc {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: var(--spacing-xs);
    text-shadow: 1px 1px 3px rgba(0,0,0,0.1);
}

/* 卡片加载动画 */
@keyframes cardFadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.user-stats-grid .resource-card {
    animation: cardFadeInUp 0.6s ease forwards;
    opacity: 0;
}

.user-stats-grid .resource-card:nth-child(1) { animation-delay: 0.1s; }
.user-stats-grid .resource-card:nth-child(2) { animation-delay: 0.2s; }
.user-stats-grid .resource-card:nth-child(3) { animation-delay: 0.3s; }
.user-stats-grid .resource-card:nth-child(4) { animation-delay: 0.4s; }
.user-stats-grid .resource-card:nth-child(5) { animation-delay: 0.5s; }
.user-stats-grid .resource-card:nth-child(6) { animation-delay: 0.6s; }

/* ======================== */
/* 竞赛总览模块样式 */
/* ======================== */

.overview-module {
    /* 继承.module样式 */
}

.overview-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.overview-section {
    background-color: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
}

.overview-section:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.overview-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary-main));
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.overview-section:hover::before {
    opacity: 1;
}

.platform-section::before {
    background: linear-gradient(90deg, #ff6b6b, #ff8e8e);
}

.events-section::before {
    background: linear-gradient(90deg, #4ecdc4, #88d3ce);
}

.process-section::before {
    background: linear-gradient(90deg, #45b7d1, #96d9e6);
}

.overview-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-light);
}

.overview-header h3 {
    color: var(--text-primary);
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.overview-header h3 i {
    color: var(--primary-main);
}

.overview-subtitle {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.overview-content {
    padding-top: var(--spacing-sm);
}

/* 依托平台logo网格 */
.platform-logos {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.logo-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: var(--surface-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.logo-item:hover {
    background-color: white;
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary-light), #e6f7ff);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-main);
    font-size: 1rem;
    flex-shrink: 0;
}

.logo-name {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: 500;
}

/* 赛事列表卡片 */
.event-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.event-card {
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border-left: 4px solid var(--primary-main);
}

.event-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
    border-left-color: var(--primary-dark);
}

.event-year {
    position: absolute;
    top: 0;
    right: 0;
    background: linear-gradient(135deg, var(--primary-main), var(--primary-dark));
    color: white;
    padding: 2px 10px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: 0 0 0 var(--radius-md);
}

.event-title {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
    padding-right: 60px; /* 为年份留出空间 */
}

.event-status {
    display: inline-block;
    padding: 2px 8px;
    background-color: var(--surface-light);
    color: var(--primary-main);
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* 竞赛流程步骤 */
.process-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.process-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--surface-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    position: relative;
}

.process-step:hover {
    background-color: white;
    border-color: var(--primary-light);
    transform: translateX(4px);
}

.process-step::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -10px;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background-color: white;
    border: 2px solid var(--border-light);
    border-radius: 50%;
    z-index: 1;
}

.process-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    width: 2px;
    height: calc(var(--spacing-md) + 8px);
    background-color: var(--border-light);
    z-index: 0;
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-main), var(--primary-dark));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-base);
    flex-shrink: 0;
    position: relative;
    z-index: 2;
}

.step-info {
    flex: 1;
}

.step-title {
    color: var(--text-primary);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.step-desc {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.overview-note {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    text-align: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-light);
    font-style: italic;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .platform-logos {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: var(--spacing-sm);
    }

    .event-cards {
        grid-template-columns: 1fr;
    }

    .event-title {
        padding-right: 50px;
    }

    .process-step {
        padding: var(--spacing-sm);
    }

    .step-number {
        width: 32px;
        height: 32px;
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 480px) {
    .platform-logos {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .logo-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xs);
    }

    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }

    .process-step {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }

    .process-step::before,
    .process-step::after {
        display: none;
    }
}

/* ======================== */
/* 紧凑卡片样式 */
/* ======================== */

/* 竞赛流程紧凑样式 */
.process-steps-compact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.process-step-compact {
    background-color: var(--surface-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    overflow: hidden;
}

.process-step-compact:hover {
    background-color: white;
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.step-header {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: white;
    border-bottom: 1px solid var(--border-light);
}

.step-header .step-number {
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--primary-main), var(--primary-dark));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-sm);
    margin-right: var(--spacing-sm);
    flex-shrink: 0;
}

.step-header .step-info {
    flex: 1;
}

.step-info .step-title {
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: 2px;
}

.step-info .step-subtitle {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.3;
}

.step-detail-card {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: white;
}

.detail-content {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    margin: 0;
}

/* 赛事列表紧凑样式 */
.event-list-compact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.event-item-compact {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--surface-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.event-item-compact:hover {
    background-color: white;
    border-color: var(--primary-light);
    transform: translateX(4px);
}

.event-item-compact .event-year {
    width: 50px;
    color: var(--primary-main);
    font-weight: 600;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

.event-item-compact .event-title {
    flex: 1;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: 0 var(--spacing-sm);
}

.event-item-compact .event-status {
    padding: 2px 8px;
    background-color: var(--primary-light);
    color: var(--primary-main);
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    flex-shrink: 0;
}

/* 依托平台紧凑样式 */
.platform-list-compact {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.platform-item-compact {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: var(--surface-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.platform-item-compact:hover {
    background-color: white;
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.platform-item-compact i {
    color: var(--primary-main);
    font-size: 1rem;
    width: 20px;
    text-align: center;
}

.platform-item-compact span {
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .platform-list-compact {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-xs);
    }

    .event-item-compact {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .event-item-compact .event-title {
        font-size: var(--font-size-sm);
    }

    .step-header {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .step-detail-card {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .platform-list-compact {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    }

    .event-item-compact {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .event-item-compact .event-year,
    .event-item-compact .event-status {
        width: auto;
    }

    .event-item-compact .event-title {
        padding: 0;
        order: 3;
        width: 100%;
        margin-top: var(--spacing-xs);
    }
}

/* 水平竞赛流程样式 */
.process-steps-horizontal {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    position: relative;
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
}

.process-steps-horizontal .process-step-compact {
    flex: 1;
    min-width: 160px;
    position: relative;
    overflow: visible;
}

/* 步骤之间的箭头 */
.process-steps-horizontal .process-step-compact:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 50%;
    right: calc(-1 * var(--spacing-md) / 2);
    transform: translateY(-50%);
    width: var(--spacing-md);
    height: 3px;
    background-color: var(--primary-dark);
    opacity: 0.8;
}

.process-steps-horizontal .process-step-compact:not(:last-child)::before {
    content: '';
    position: absolute;
    top: 50%;
    right: calc(-1 * var(--spacing-md) / 2 - 5px);
    transform: translateY(-50%) rotate(45deg);
    width: 10px;
    height: 10px;
    border-right: 3px solid var(--primary-dark);
    border-top: 3px solid var(--primary-dark);
    opacity: 0.8;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .process-steps-horizontal {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .process-steps-horizontal .process-step-compact:not(:last-child)::after,
    .process-steps-horizontal .process-step-compact:not(:last-child)::before {
        display: none;
    }
}

/* 赛事卡片网格样式 */
.event-cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.event-card {
    display: block;
    background-color: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    padding: var(--spacing-md);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: linear-gradient(145deg, #ffffff, #fafafa);
}

.event-card:hover {
    background-color: white;
    border-color: var(--primary-light);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(145deg, #ffffff, #f0f9ff);
}

.event-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xs);
}

.event-card-year {
    color: white;
    font-weight: 700;
    font-size: var(--font-size-sm);
    line-height: 1;
    background: linear-gradient(135deg, var(--primary-main), var(--primary-dark));
    padding: 4px 12px;
    border-radius: 20px;
    display: inline-block;
    box-shadow: 0 2px 4px rgba(24, 144, 255, 0.2);
}

.event-card-status {
    padding: 4px 10px;
    background-color: var(--primary-light);
    color: var(--primary-main);
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.event-card-title {
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1.4;
    margin: var(--spacing-sm) 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.8em;
}

.event-card-link {
    display: inline-flex;
    align-items: center;
    margin-top: var(--spacing-sm);
    color: var(--primary-main);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-decoration: none;
    opacity: 0.9;
    transition: all 0.3s ease;
    padding: 6px 12px;
    background-color: var(--primary-light);
    border-radius: var(--radius-sm);
}

.event-card-link:hover {
    opacity: 1;
    background-color: var(--primary-main);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(24, 144, 255, 0.2);
}

.event-card-link i {
    margin-left: 4px;
    font-size: 0.8em;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .event-cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .event-cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .event-card {
        padding: var(--spacing-xs);
    }

    .event-card-year {
        font-size: var(--font-size-sm);
    }

    .event-card-title {
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 480px) {
    .event-cards-grid {
        grid-template-columns: 1fr;
    }
}

/* 创建小组表单样式 */
.required {
    color: #ff4d4f;
    font-weight: bold;
}
.upload-options {
    margin-top: 1rem;
}

/* 已创建的小组列表样式 */
#groups-list-container {
    background-color: var(--surface-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border-light);
}

#groups-list-container h4 {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    border-bottom: 2px solid var(--primary-main);
    padding-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

#groups-list-container h4 i {
    color: var(--primary-main);
}

.groups-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.group-item {
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.group-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--primary-main);
}

.group-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.delete-group-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.delete-group-btn:hover {
    color: var(--error);
    background-color: rgba(255, 77, 79, 0.1);
    transform: scale(1.1);
}

.delete-group-btn:active {
    transform: scale(0.95);
}

.group-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-md);
}

.group-science {
    color: var(--primary-main);
    font-weight: 500;
    background-color: var(--primary-light);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
}

.group-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.group-meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.group-meta-item i {
    color: var(--primary-main);
}

.group-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-light);
}

.option-item {
    background-color: var(--surface-light);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.option-label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: 4px;
}

.option-value {
    color: var(--text-primary);
    font-weight: 500;
}

.empty-groups-message {
    text-align: center;
    color: var(--text-secondary);
    padding: var(--spacing-lg);
    background-color: var(--surface-light);
    border-radius: var(--radius-md);
    border: 1px dashed var(--border-main);
}

/* ======================== */
/* 创建社区规模小组美化样式 */
/* ======================== */

/* 卡片整体美化 */
.community-card {
    background: linear-gradient(145deg, #ffffff, #f8faff);
    border: 1px solid rgba(24, 144, 255, 0.15);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    padding: var(--spacing-md);
}

.community-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #1890ff, #52c41a, #faad14, #ff4d4f);
    background-size: 400% 100%;
    animation: gradient-shift 8s ease infinite;
    opacity: 0.9;
    transition: opacity 0.4s ease;
}

.community-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(24, 144, 255, 0.15);
    border-color: rgba(24, 144, 255, 0.3);
}

.community-card:hover::before {
    opacity: 1;
    animation-play-state: running;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* 卡片标题美化 */
.community-card .card-header {
    background: linear-gradient(to right, rgba(24, 144, 255, 0.05), rgba(82, 196, 26, 0.05));
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: var(--spacing-md);
    margin-bottom: 0;
    border-bottom: 1px solid rgba(24, 144, 255, 0.1);
}

.community-card .card-title h3 {
    color: var(--primary-dark);
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin: 0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    position: relative;
    padding-left: var(--spacing-md);
}

.community-card .card-title h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: linear-gradient(to bottom, var(--primary-main), var(--success));
    border-radius: var(--radius-sm);
}

.community-card .card-title h3 i {
    color: var(--primary-main);
    background: linear-gradient(135deg, var(--primary-main), var(--success));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.2em;
    margin-right: var(--spacing-sm);
}

/* 表单容器美化 */
.community-card .card-body {
    padding: var(--spacing-md);
    background: white;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.community-card .tab-pane.active > p:first-child {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--surface-light);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-main);
    font-size: var(--font-size-base);
    line-height: 1.6;
}

/* 表单容器样式 */
.community-card .tab-pane.active .upload-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: 0;
    background-color: transparent;
    border-radius: 0;
}

/* 表单元素美化 */
.community-card .upload-options .option-group {
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.community-card .upload-options .option-group label {
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: color 0.3s ease;
}

.community-card .upload-options .option-group label i {
    color: var(--primary-main);
    width: 20px;
    text-align: center;
    transition: transform 0.3s ease;
}

.community-card .upload-options .option-group:hover label i {
    transform: scale(1.2);
}

.community-card .upload-options .option-group label .required {
    color: var(--error);
    margin-left: 2px;
}

/* 输入框和下拉菜单美化 */
.community-card .upload-options .option-group select,
.community-card .upload-options .option-group input {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    background: white;
    transition: all 0.3s ease;
    color: var(--text-primary);
    width: 100%;
    box-sizing: border-box;
}

.community-card .upload-options .option-group select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%238c8c8c'%3e%3cpath d='M7 10l5 5 5-5z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right var(--spacing-sm) center;
    background-size: 16px;
    padding-right: var(--spacing-lg);
}

.community-card .upload-options .option-group select:focus,
.community-card .upload-options .option-group input:focus {
    outline: none;
    border-color: var(--primary-main);
    box-shadow: 0 0 0 3px rgba(24, 144, 255, 0.1);
    background-color: var(--surface-light);
}

.community-card .upload-options .option-group select:hover,
.community-card .upload-options .option-group input:hover {
    border-color: var(--primary-light);
}

.community-card .upload-options .option-group select option {
    padding: var(--spacing-sm);
}

.community-card .upload-options .option-group select optgroup {
    font-weight: 600;
    color: var(--primary-dark);
    padding: var(--spacing-xs) 0;
}

/* 按钮美化 */
.community-card .upload-options .option-group button {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    margin-top: var(--spacing-sm);
}

.community-card .upload-options .option-group button.btn-primary {
    background: linear-gradient(135deg, var(--primary-main), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 12px rgba(24, 144, 255, 0.3);
}

.community-card .upload-options .option-group button.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(24, 144, 255, 0.4);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-main));
}

.community-card .upload-options .option-group button.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(24, 144, 255, 0.3);
}

.community-card .upload-options .option-group button.btn-secondary {
    background: linear-gradient(135deg, #faad14, #ff7a45);
    color: white;
    box-shadow: 0 4px 12px rgba(250, 173, 20, 0.3);
    border: none;
}

.community-card .upload-options .option-group button.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(250, 173, 20, 0.4);
    background: linear-gradient(135deg, #ff7a45, #faad14);
}

/* API测试结果框美化 */
#api-test-result {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    background: linear-gradient(to right, var(--surface-light), white);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    font-family: monospace;
    font-size: var(--font-size-sm);
    line-height: 1.5;
    transition: all 0.3s ease;
}

#api-test-result.success {
    background: linear-gradient(to right, #f6ffed, white);
    border-color: #b7eb8f;
    color: #52c41a;
}

#api-test-result.error {
    background: linear-gradient(to right, #fff2f0, white);
    border-color: #ffccc7;
    color: #ff4d4f;
}

/* 已创建小组列表美化 */
#groups-list-container {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--border-light);
}

#groups-list-container h4 {
    color: var(--primary-dark);
    font-size: var(--font-size-md);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-light);
}

#groups-list-container h4 i {
    color: var(--primary-main);
    background: linear-gradient(135deg, var(--primary-main), var(--success));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.groups-list {
    display: grid;
    gap: var(--spacing-md);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .community-card {
        margin: 0 var(--spacing-sm);
        padding: var(--spacing-sm);
    }

    .community-card .card-header {
        padding: var(--spacing-sm);
    }

    .community-card .card-body {
        padding: var(--spacing-sm);
    }

    .community-card .upload-options .option-group {
        margin-bottom: var(--spacing-xs);
    }

    .community-card .upload-options .option-group button {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* 加载动画 */
@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* 工具提示样式 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltip-text {
    visibility: hidden;
    width: 200px;
    background-color: var(--text-primary);
    color: white;
    text-align: center;
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
    font-size: var(--font-size-sm);
    font-weight: normal;
    box-shadow: var(--shadow-md);
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* ======================== */
/* 额外美化效果 */
/* ======================== */

/* 图标动画效果 */
.community-card .card-title h3 i {
    animation: icon-pulse 2s ease-in-out infinite;
}

@keyframes icon-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* 表单验证样式 */
.community-card .upload-options .option-group select:invalid,
.community-card .upload-options .option-group input:invalid {
    border-color: var(--error);
    background-color: rgba(255, 77, 79, 0.05);
}

.community-card .upload-options .option-group select:valid,
.community-card .upload-options .option-group input:valid {
    border-color: var(--success);
    background-color: rgba(82, 196, 26, 0.05);
}

/* 下拉菜单选项美化 */
.community-card .upload-options .option-group select option {
    padding: var(--spacing-sm);
    margin: 2px 0;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s ease;
}

.community-card .upload-options .option-group select option:hover {
    background-color: var(--primary-light);
    color: var(--primary-dark);
}

.community-card .upload-options .option-group select optgroup option {
    padding-left: var(--spacing-md);
}

/* 卡片入场动画 */
@keyframes card-entrance {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.community-card {
    animation: card-entrance 0.6s ease-out;
}

/* 成功创建反馈动画 */
@keyframes success-pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(82, 196, 26, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(82, 196, 26, 0);
    }
}

.success-feedback {
    animation: success-pulse 1s ease;
}

/* 表单组聚焦效果 */
.community-card .upload-options .option-group:focus-within {
    transform: translateX(5px);
    transition: transform 0.3s ease;
}

.community-card .upload-options .option-group:focus-within label {
    color: var(--primary-main);
}

/* 必填字段指示器 */
.required-indicator {
    display: inline-block;
    width: 6px;
    height: 6px;
    background-color: var(--error);
    border-radius: 50%;
    margin-left: 4px;
    animation: blink 2s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* 分隔线美化 */
#groups-list-container {
    position: relative;
}

#groups-list-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--primary-main), transparent);
}

/* 空状态美化 */
.empty-groups-message {
    position: relative;
    overflow: hidden;
}

.empty-groups-message::before {
    content: '👥';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    opacity: 0.1;
    z-index: 0;
}

.empty-groups-message p {
    position: relative;
    z-index: 1;
}

/* 响应式调整 */
@media (max-width: 480px) {
    .community-card {
        border-radius: var(--radius-md);
        margin: var(--spacing-xs);
        padding: var(--spacing-sm);
    }

    .community-card .card-header {
        padding: var(--spacing-sm);
    }

    .community-card .card-title h3 {
        font-size: var(--font-size-md);
    }

    .community-card .upload-options .option-group select,
    .community-card .upload-options .option-group input {
        padding: var(--spacing-xs);
        font-size: var(--font-size-sm);
    }
}