:root{--bg-primary: #fafafa;--bg-secondary: #ffffff;--bg-tertiary: #f3f4f6;--text-primary: #18181b;--text-secondary: #52525b;--text-tertiary: #a1a1aa;--accent-color: #18181b;--accent-hover: #27272a;--border-color: #e4e4e7;--border-hover: #d4d4d8;--font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-serif: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--spacing-3xl: 4rem;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .03);--shadow-md: 0 4px 12px -2px rgb(0 0 0 / .08);--shadow-lg: 0 12px 32px -4px rgb(0 0 0 / .12);--shadow-xl: 0 24px 48px -8px rgb(0 0 0 / .15);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;color:var(--text-primary);margin-bottom:var(--spacing-md);letter-spacing:-.02em}h1{font-size:2.75rem;font-weight:700}h2{font-size:2rem}h3{font-size:1.25rem}a{color:inherit;text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--text-secondary)}button{font-family:inherit;cursor:pointer;border:none;background:none;transition:all var(--transition-fast)}input,textarea{font-family:inherit;outline:none}.container{max-width:1280px;margin:0 auto;padding:0 var(--spacing-xl)}.min-h-screen{min-height:100vh}.flex{display:flex}.flex-col{flex-direction:column}.flex-1{flex:1}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-xs{gap:var(--spacing-xs)}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.gap-xl{gap:var(--spacing-xl)}.text-secondary{color:var(--text-secondary)}.text-tertiary{color:var(--text-tertiary)}.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}.font-medium{font-weight:500}.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.fade-in{animation:fadeIn .6s cubic-bezier(.16,1,.3,1) forwards}@keyframes fadeIn{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.stagger-1{animation-delay:.05s}.stagger-2{animation-delay:.1s}.stagger-3{animation-delay:.15s}.stagger-4{animation-delay:.2s}.card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);transition:all var(--transition-normal)}.card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-md)}.card-interactive{cursor:pointer}.card-interactive:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);font-size:.875rem;font-weight:500;border-radius:var(--radius-md);transition:all var(--transition-fast)}.btn-primary{background:var(--accent-color);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--bg-tertiary);color:var(--text-primary)}.modal-overlay{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;background:#0009;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:var(--spacing-lg);animation:overlayFadeIn .25s ease forwards}@keyframes overlayFadeIn{0%{opacity:0}to{opacity:1}}.modal-content{position:relative;width:100%;max-width:1200px;height:90vh;background:var(--bg-secondary);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);overflow:hidden;display:flex;flex-direction:column;animation:modalSlideIn .35s cubic-bezier(.16,1,.3,1) forwards}@keyframes modalSlideIn{0%{opacity:0;transform:scale(.96) translateY(16px)}to{opacity:1;transform:scale(1) translateY(0)}}.grid{display:grid}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}@media(min-width:640px){.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(min-width:768px){.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(min-width:1024px){.lg\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.lg\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}}@media(min-width:1280px){.xl\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.xl\:grid-cols-5{grid-template-columns:repeat(5,minmax(0,1fr))}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}