body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
        line-height: 1.5;
        font-weight: 400;
        background-color: #EBF5FF;
        color: #333;
        min-height: 100vh;
        padding-bottom: 50px;
      }
      
      /* 工具类 */
      .flex {
        display: flex;
      }
      
      .flex-col {
        flex-direction: column;
      }
      
      .items-center {
        align-items: center;
      }
      
      .items-end {
        align-items: flex-end;
      }
      
      .justify-center {
        justify-content: center;
      }
      
      .justify-around {
        justify-content: space-around;
      }
      
      .justify-between {
        justify-content: space-between;
      }
      
      .text-center {
        text-align: center;
      }
      
      .font-bold {
        font-weight: bold;
      }
      
      .text-white {
        color: white;
      }
      
      .text-red-500 {
        color: #EF4444;
      }
      
      .text-yellow-600 {
        color: #D97706;
      }
      
      .text-gray-500 {
        color: #6B7280;
      }
      
      .text-gray-700 {
        color: #374151;
      }
      
      .bg-white {
        background-color: white;
      }
      
      .bg-blue-100 {
        background-color: #EBF5FF;
      }
      
      .bg-pink-400 {
        background-color: #F472B6;
      }
      
      .bg-purple-400 {
        background-color: #A78BFA;
      }
      
      .bg-yellow-400 {
        background-color: #FBBF24;
      }
      
      .bg-gray-400 {
        background-color: #9CA3AF;
      }
      
      .bg-orange-600 {
        background-color: #EA580C;
      }
      
      .bg-orange-500 {
        background-color: #F97316;
      }
      
      .bg-blue-500 {
        background-color: #3B82F6;
      }
      
      .bg-blue-600 {
        background-color: #2563EB;
      }
      
      .bg-gray-100 {
        background-color: #F3F4F6;
      }
      
      .bg-yellow-50 {
        background-color: #FFFBEB;
      }
      
      .border {
        border: 1px solid;
      }
      
      .border-gray-200 {
        border-color: #E5E7EB;
      }
      
      .border-gray-300 {
        border-color: #D1D5DB;
      }
      
      .border-yellow-300 {
        border-color: #FCD34D;
      }
      
      .border-b {
        border-bottom: 1px solid;
      }
      
      .border-gray-100 {
        border-bottom-color: #F3F4F6;
      }
      
      .rounded-t-xl {
        border-top-left-radius: 0.75rem;
        border-top-right-radius: 0.75rem;
      }
      
      .rounded-full {
        border-radius: 9999px;
      }
      
      .rounded-xl {
        border-radius: 0.75rem;
      }
      
      .rounded-lg {
        border-radius: 0.5rem;
      }
      
      .rounded-br-lg {
        border-bottom-right-radius: 0.5rem;
      }
      
      .p-4, .px-4, .py-4, .p-5, .px-3, .py-2, .py-3, .mb-8, .mb-6, .mb-5, .mb-4, .mb-3, .mb-2, .mr-5, .ml-4, .mt-5, .mt-6, .mt-[-40px], .mt-[-50px], .bottom-12, .bottom-8, .w-full, .w-[240px], .w-[280px], .w-[80px], .w-[100px], .w-[30px], .w-[40px], .h-full, .h-[280px], .h-[320px], .h-[80px], .h-[100px], .h-[30px], .h-[40px], .aspect-video, .overflow-hidden, .shadow-sm, .block, .inline-block, .absolute, .relative, .inset-0, .top-0, .left-0, .cursor-not-allowed, .opacity-50 {
        /* 这些类的样式会直接在HTML中通过内联样式或更具体的CSS规则实现 */
      }
      
      /* 新增Banner样式 */
      .banner {
        width: 100%;
        background: linear-gradient(135deg, #ef4444 0%, #a78b00 100%);
        padding: 20px 16px;
        color: white;
        text-align: center;
        position: relative;
        overflow: hidden;
      }
      
      .banner::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
        background-size: 20px 20px;
        opacity: 0.3;
        z-index: 1;
      }
      
      .banner-content {
        position: relative;
        z-index: 2;
      }
      
      .banner-title {
        font-size: 24px;
        font-weight: bold;
        margin-bottom: 8px;
        text-shadow: 0 2px 4px rgba(0,0,0,0.3);
      }
      
      .banner-subtitle {
        font-size: 16px;
        opacity: 0.9;
        margin-bottom: 12px;
      }
      
      .banner-dates {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 20px;
        margin-top: 12px;
        font-size: 14px;
      }
      
      .banner-date {
        display: flex;
        align-items: center;
        gap: 6px;
        background: rgba(255,255,255,0.1);
        padding: 6px 12px;
        border-radius: 20px;
        backdrop-filter: blur(10px);
      }
      
      .banner-icon {
        font-size: 16px;
      }
      
      /* 具体样式 */
      .top-container {
        margin-top:75px;
        position: relative;
        display: flex;
        justify-content: space-around;
        align-items: flex-end;
        padding: 0 16px;
        margin-bottom: 32px;
        padding-top: 24px;
      }
      
      .rank-card {
        position: relative;
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 16px;
        border-top-left-radius: 0.75rem;
        border-top-right-radius: 0.75rem;
      }
      
      .rank-card-1 {
        width: 280px;
        height: 320px;
        background-color: #F472B6;
        margin-bottom:65px;
      }
      
      .rank-card-2 {
        width: 240px;
        height: 280px;
        margin-bottom: 48px;
        background-color: #A78BFA;
      }
      
      .rank-card-3 {
        width: 240px;
        height: 280px;
        margin-bottom: 48px;
        background-color: #A78B00;
      }
      
      .avatar-container {
        position: relative;
        margin-top: -40px;
      }
      
      .avatar-container-1 {
        margin-top: -50px;
      }
      
      /* #1 优化 avatar 类样式 - 确保显示最大化居中圆形部分 */
      .avatar {
        width: 80px;
        height: 80px;
        border-radius: 50%;
        overflow: hidden;
        border: 5px solid;
        position: relative;
        cursor: pointer;
      }
      
      /* 优化头像图片显示 */
      .avatar img {
        width: 100%;
        height: 100%;
        object-fit: cover; /* 确保图片填充整个圆形区域 */
        object-position: center; /* 确保图片居中显示 */
        display: block;
        transition: transform 0.3s;
      }
      
      .avatar:hover img {
        transform: scale(1.05);
      }
      
      .avatar-1 {
        width: 100px;
        height: 100px;
        border-color: #F472B6;
      }
      
      .avatar-2 {
        border-color: #A78BFA;
      }
      
      .avatar-3 {
        border-color: #A78BFA;
      }
      
      .crown {
        position: absolute;
        top: -20px;
        left: 50%;
        transform: translateX(-50%);
        width: 30px;
        height: 30px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
      }
      
      .crown-1 {
        width: 40px;
        height: 40px;
        top: -20px;
        background-color: #FBBF24;
      }
      
      .crown-2 {
        background-color: #9CA3AF;
      }
      
      .crown-3 {
        background-color: #EA580C;
      }
      
      .rank-number {
        position: absolute;
        bottom: 20px;
        font-size: 120px;
        font-weight: bold;
        color: rgba(255, 255, 255, 0.5);
      }
      
      .rank-number-1 {
        font-size: 150px;
      }
      
      .rank-title {
        margin-top: 20px;
        color: white;
        font-weight: bold;
        text-align: center;
      }
      
      .rank-votes {
        color: white;
        text-align: center;
      }
      
      .ranking-list {
        margin: 0 16px;
        background-color: white;
        border-radius: 0.75rem;
        padding: 20px;
        margin-bottom: 32px;
      }
      
      .ranking-item {
        display: flex;
        align-items: center;
        padding: 16px 0;
        border-bottom: 1px solid #F3F4F6;
      }
      
      .ranking-item:last-child {
        border-bottom: none;
      }
      
      .ranking-number {
        font-size: 24px;
        font-weight: bold;
        margin-right: 20px;
      }
      
      /* #2 优化 ranking-image 类样式 - 确保显示最大化居中方块部分 */
      .ranking-image {
        width: 60px;
        height: 60px;
        border-radius: 0.5rem;
        overflow: hidden;
        margin-right: 20px;
        flex-shrink: 0;
        position: relative;
        cursor: pointer;
      }
      
      /* 优化排行图片显示 */
      .ranking-image img {
        width: 100%;
        height: 100%;
        object-fit: cover; /* 确保图片填充整个方形区域 */
        object-position: center; /* 确保图片居中显示 */
        display: block;
        transition: transform 0.3s;
      }
      
      .ranking-image:hover img {
        transform: scale(1.05);
      }
      
      .ranking-info {
        flex: 1;
        display: flex;
        flex-direction: column;
      }
      
      /* 优化 ranking-name 样式 - 作品标题和大学名称分两行展示 */
      .ranking-name {
        font-weight: bold;
        margin-bottom: 4px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 200px;
      }
      
      .ranking-school {
        font-size: 13px;
        color: #6B7280;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 200px;
      }
      
      .ranking-count {
        color: #EF4444;
        font-weight: bold;
        margin-left: 10px;
      }
      
      .pagination {
        display: flex;
        justify-content: center;
        margin-top: 20px;
        gap: 8px;
      }
      
      .page-button {
        min-width: 36px;
        height: 36px;
        border-radius: 6px;
        border: 1px solid #E5E7EB;
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: white;
        font-size: 14px;
        cursor: pointer;
        transition: all 0.2s;
      }
      
      .page-button:hover {
        background-color: #F3F4F6;
      }
      
      .page-button.active {
        background-color: #3B82F6;
        color: white;
        border-color: #3B82F6;
      }
      
      .activity-header {
        margin: 0 16px;
        background-color: white;
        border-radius: 0.75rem;
        padding: 16px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 24px;
      }
      
      .activity-title {
        display: flex;
        align-items: center;
        gap: 12px;
      }
      
      .activity-close {
        font-size: 24px;
        font-weight: bold;
        color: #EF4444;
      }
      
      .activity-name {
        font-size: 18px;
      }
      
      .submit-button {
        background-color: #F3F4F6;
        padding: 4px 12px;
        border-radius: 9999px;
        font-size: 14px;
      }
      
      /* 优化 works-grid 为瀑布流布局 */
      .works-grid {
        margin: 0 16px;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
        margin-bottom: 32px;
      }
      
      /* 优化 work-card 样式 */
      .work-card {
        background-color: white;
        border-radius: 0.75rem;
        padding: 12px;
        box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
        display: flex;
        flex-direction: column;
        height: fit-content;
        break-inside: avoid;
      }
      
      .work-card-full {
        grid-column: span 2;
      }
      
      .work-image-container {
        position: relative;
        margin-bottom: 12px;
        width: 100%;
      }
      
      .work-number {
        position: absolute;
        top: 0;
        left: 0;
        background-color: #F97316;
        color: white;
        padding: 4px 8px;
        border-bottom-right-radius: 0.5rem;
        font-size: 12px;
        font-weight: bold;
        z-index: 1;
      }
      
      /* 优化 work-image 样式 - 确保图片自适应显示 */
      .work-image {
        width: 100%;
        border-radius: 0.5rem;
        overflow: hidden;
        aspect-ratio: 1; /* 保持方形比例 */
        background-color: #f5f5f5;
        cursor: pointer;
      }
      
      .work-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center;
        display: block;
        transition: transform 0.3s;
      }
      
      .work-image img:hover {
        transform: scale(1.05);
      }
      
      /* 优化 work-title 样式 - 作品标题和大学名称分两行展示 */
      .work-title {
        font-weight: bold;
        font-size: 14px;
        margin-bottom: 4px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
      }
      
      .work-school {
        font-size: 12px;
        color: #6B7280;
        margin-bottom: 8px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
      }
      
      .work-votes {
        color: #EF4444;
        font-weight: bold;
        margin-bottom: 10px;
        font-size: 14px;
      }
      
      .vote-button {
        width: 100%;
        background-color: #FFFBEB;
        color: #D97706;
        border: 1px solid #FCD34D;
        padding: 8px 0;
        border-radius: 6px;
        font-size: 14px;
        cursor: pointer;
        transition: all 0.2s;
      }
      
      .vote-button:hover:not(:disabled) {
        background-color: #FEF3C7;
      }
      
      .vote-button:disabled {
        opacity: 0.5;
        cursor: not-allowed;
      }
      
      .bottom-text {
        text-align: center;
        color: #6B7280;
        font-size: 14px;
        padding-bottom: 16px;
      }
      
      /* 模态框样式 */
      .modal-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgba(0, 0, 0, 0.5);
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 16px;
        z-index: 50;
      }
      
      .modal-content {
        background-color: white;
        border-radius: 0.75rem;
        width: 100%;
        max-width: 400px;
        padding: 20px;
      }
      
      .modal-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 20px;
      }
      
      .modal-title {
        font-size: 20px;
        font-weight: bold;
      }
      
      .modal-close {
        color: #6B7280;
        cursor: pointer;
      }
      
      .modal-close:hover {
        color: #374151;
      }
      
      .form-group {
        margin-bottom: 16px;
      }
      
      .form-label {
        display: block;
        font-size: 14px;
        font-weight: 500;
        color: #374151;
        margin-bottom: 4px;
      }
      
      .form-input, .form-textarea, .form-file {
        width: 100%;
        padding: 8px 12px;
        border: 1px solid #D1D5DB;
        border-radius: 0.5rem;
        font-size: 14px;
      }
      
      .form-input:focus, .form-textarea:focus, .form-file:focus {
        outline: none;
        ring: 2px;
        ring-color: #3B82F6;
      }
      
      .form-textarea {
        resize: vertical;
        min-height: 80px;
      }
      
      .submit-form-button {
        width: 100%;
        background-color: #3B82F6;
        color: white;
        padding: 12px 0;
        border-radius: 0.5rem;
        font-weight: bold;
        font-size: 16px;
        border: none;
        margin-top: 8px;
      }
      
      .submit-form-button:hover {
        background-color: #2563EB;
      }
      
      /* 提示弹窗样式 */
      .toast {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        background-color: rgba(0, 0, 0, 0.7);
        color: white;
        padding: 12px 20px;
        border-radius: 4px;
        z-index: 100;
        display: none;
      }
      
      /* 新增：图片放大层样式 */
      .image-zoom-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.9);
        z-index: 9999;
        display: none;
        justify-content: center;
        align-items: center;
        padding: 20px;
        animation: fadeIn 0.3s ease;
      }
      
      .image-zoom-content {
        position: relative;
        max-width: 90%;
        max-height: 90%;
        display: flex;
        justify-content: center;
        align-items: center;
      }
      
      .image-zoom-img {
        max-width: 100%;
        max-height: 80vh;
        object-fit: contain;
        border-radius: 8px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        cursor: zoom-out;
        animation: zoomIn 0.3s ease;
      }
      
      .image-zoom-close {
        position: absolute;
        top: -40px;
        right: 0;
        color: white;
        font-size: 24px;
        cursor: pointer;
        background-color: rgba(255, 255, 255, 0.2);
        width: 36px;
        height: 36px;
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        transition: background-color 0.2s;
      }
      
      .image-zoom-close:hover {
        background-color: rgba(255, 255, 255, 0.3);
      }
      
      .image-zoom-info {
        position: absolute;
        bottom: -40px;
        left: 0;
        width: 100%;
        color: white;
        text-align: center;
        font-size: 14px;
        padding: 8px;
      }
      
      /* 动画效果 */
      @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
      }
      
      @keyframes zoomIn {
        from { transform: scale(0.8); opacity: 0; }
        to { transform: scale(1); opacity: 1; }
      }
      
      @keyframes zoomOut {
        from { transform: scale(1); opacity: 1; }
        to { transform: scale(0.8); opacity: 0; }
      }
      
      /* 移动端优化 */
      @media (max-width: 768px) {
        .image-zoom-overlay {
          padding: 10px;
        }
        
        .image-zoom-img {
          max-height: 70vh;
        }
        
        .image-zoom-close {
          top: -50px;
          right: 50%;
          transform: translateX(50%);
        }
        
        .image-zoom-info {
          font-size: 12px;
          bottom: -50px;
        }
      }