:root {
            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;
            font-synthesis: none;
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        .line-clamp-2 {
            overflow: hidden;
            display: -webkit-box;
            -webkit-box-orient: vertical;
            -webkit-line-clamp: 2;
        }
        /* 精简的核心样式 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
            line-height: 1.5;
            color: #333;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        
        /* 布局工具类 */
        .flex { display: flex; }
        .grid { display: grid; }
        .hidden { display: none; }
        .block { display: block; }
        .relative { position: relative; }
        .absolute { position: absolute; }
        .fixed { position: fixed; }
        .sticky { position: sticky; }
        
        /* 间距工具类 */
        .p-2 { padding: 0.5rem; }
        .p-4 { padding: 1rem; }
        .p-6 { padding: 1.5rem; }
        .p-8 { padding: 2rem; }
        .px-4 { padding-left: 1rem; padding-right: 1rem; }
        .px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
        .py-4 { padding-top: 1rem; padding-bottom: 1rem; }
        .py-8 { padding-top: 2rem; padding-bottom: 2rem; }
        .py-12 { padding-top: 3rem; padding-bottom: 3rem; }
        .py-16 { padding-top: 4rem; padding-bottom: 4rem; }
        .mb-2 { margin-bottom: 0.5rem; }
        .mb-4 { margin-bottom: 1rem; }
        .mb-6 { margin-bottom: 1.5rem; }
        .mb-8 { margin-bottom: 2rem; }
        .mt-4 { margin-top: 1rem; }
        .mt-6 { margin-top: 1.5rem; }
        .mr-2 { margin-right: 0.5rem; }
        .mr-3 { margin-right: 0.75rem; }
        
        /* 文本工具类 */
        .text-center { text-align: center; }
        .text-right { text-align: right; }
        .text-sm { font-size: 0.875rem; }
        .text-lg { font-size: 1.125rem; }
        .text-xl { font-size: 1.25rem; }
        .text-2xl { font-size: 1.5rem; }
        .text-3xl { font-size: 1.875rem; }
        .text-4xl { font-size: 2.25rem; }
        .font-medium { font-weight: 500; }
        .font-semibold { font-weight: 600; }
        .font-bold { font-weight: 700; }
        .leading-relaxed { line-height: 1.625; }
        
        /* 颜色工具类 */
        .text-white { color: white; }
        .text-gray-500 { color: #6b7280; }
        .text-gray-600 { color: #4b5563; }
        .text-gray-700 { color: #374151; }
        .text-gray-800 { color: #1f2937; }
        .text-blue-600 { color: #2563eb; }
        
        .bg-white { background-color: white; }
        .bg-gray-50 { background-color: #f9fafb; }
        .bg-gray-100 { background-color: #f3f4f6; }
        .bg-gray-900 { background-color: #111827; }
        .bg-blue-100 { background-color: #dbeafe; }
        .bg-blue-500 { background-color: #3b82f6; }
        .bg-blue-600 { background-color: #2563eb; }
        
        .border { border-width: 1px; }
        .border-2 { border-width: 2px; }
        .border-gray-300 { border-color: #d1d5db; }
        .border-blue-600 { border-color: #2563eb; }
        .border-transparent { border-color: transparent; }
        
        /* 圆角 */
        .rounded-md { border-radius: 0.375rem; }
        .rounded-lg { border-radius: 0.5rem; }
        .rounded-xl { border-radius: 0.75rem; }
        .rounded-full { border-radius: 9999px; }
        
        /* 阴影 */
        .shadow-md { box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06); }
        .shadow-lg { box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05); }
        
        /* 渐变 */
        .bg-gradient-to-r { background-image: linear-gradient(to right, var(--tw-gradient-stops)); }
        .from-blue-600 { --tw-gradient-from: #2563eb; --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, rgba(37, 99, 235, 0)); }
        .to-blue-800 { --tw-gradient-to: #1e40af; }
        
        /* 布局网格 */
        .grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
        .grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
        .grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
        
        /* 间距 */
        .gap-2 { gap: 0.5rem; }
        .gap-4 { gap: 1rem; }
        .gap-8 { gap: 2rem; }
        .gap-12 { gap: 3rem; }
        
        /* 溢出 */
        .overflow-hidden { overflow: hidden; }
        
        /* 对象适配 */
        .object-cover { object-fit: cover; }
        
        /* 最小高度 */
        .min-h-screen { min-height: 100vh; }
        
        /* 宽度 */
        .w-full { width: 100%; }
        .w-10 { width: 2.5rem; }
        .w-24 { width: 6rem; }
        
        /* 高度 */
        .h-10 { height: 2.5rem; }
        .h-20 { height: 5rem; }
        .h-48 { height: 12rem; }
        .h-auto { height: auto; }
        .h-full { height: 100%; }
        
        /* 最大宽度 */
        .max-w-2xl { max-width: 42rem; }
        .max-w-3xl { max-width: 48rem; }
        .max-w-xs { max-width: 20rem; }
        
        /* 弹性布局 */
        .flex-col { flex-direction: column; }
        .flex-wrap { flex-wrap: wrap; }
        .flex-grow { flex-grow: 1; }
        .items-center { align-items: center; }
        .items-start { align-items: flex-start; }
        .justify-center { justify-content: center; }
        .justify-between { justify-content: space-between; }
        
        /* 定位 */
        .top-0 { top: 0; }
        .top-4 { top: 1rem; }
        .top-24 { top: 6rem; }
        .left-0 { left: 0; }
        .right-0 { right: 0; }
        .inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
        
        /* Z-index */
        .z-10 { z-index: 10; }
        .z-50 { z-index: 50; }
        
        /* 其他 */
        .list-disc { list-style-type: disc; }
        .space-y-2 > * + * { margin-top: 0.5rem; }
        .space-y-3 > * + * { margin-top: 0.75rem; }
        .space-y-4 > * + * { margin-top: 1rem; }
        
        /* 响应式设计 */
        @media (min-width: 768px) {
            .md\:flex { display: flex; }
            .md\:hidden { display: none; }
            .md\:flex-row { flex-direction: row; }
            .md\:items-center { align-items: center; }
            .md\:mt-0 { margin-top: 0; }
            .md\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
            .md\:py-24 { padding-top: 6rem; padding-bottom: 6rem; }
            .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
            .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
            .md\:text-2xl { font-size: 1.5rem; }
            .md\:text-4xl { font-size: 2.25rem; }
        }
        
        @media (min-width: 1024px) {
            .lg\:col-span-1 { grid-column: span 1 / span 1; }
            .lg\:col-span-2 { grid-column: span 2 / span 2; }
            .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
            .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
        }
        
        /* 交互状态 */
        .hover\:text-blue-600:hover { color: #2563eb; }
        .hover\:bg-blue-700:hover { background-color: #1d4ed8; }
        .hover\:border-gray-300:hover { border-color: #d1d5db; }
        .hover\:shadow-xl:hover { box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04); }
        
        .transition-colors { transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease; }
        .transition-shadow { transition: box-shadow 0.15s ease; }
        .transition-all { transition: all 0.15s ease; }
        
        .group:hover .group-hover\:scale-105 { transform: scale(1.05); }
        .group:hover .group-hover\:bg-blue-100 { background-color: #dbeafe; }
        .group:hover .group-hover\:text-blue-600 { color: #2563eb; }
        
        .focus\:outline-none:focus { outline: 2px solid transparent; outline-offset: 2px; }
        .focus\:ring-blue-500:focus { --tw-ring-color: #3b82f6; }