:root{--color-primary: #e53935;--color-primary-dark: #c62828;--color-primary-light: #ff6f60;--color-on-primary: #ffffff;--color-primary-container: #ffebee;--color-on-primary-container: #b71c1c;--color-secondary: #43a047;--color-secondary-dark: #2e7d32;--color-secondary-light: #76d275;--color-on-secondary: #ffffff;--color-secondary-container: #e8f5e9;--color-on-secondary-container: #1b5e20;--color-tertiary: #039be5;--color-tertiary-dark: #0277bd;--color-tertiary-light: #4fc3f7;--color-on-tertiary: #ffffff;--color-tertiary-container: #e1f5fe;--color-on-tertiary-container: #01579b;--color-accent: #ffc107;--color-accent-dark: #ffa000;--color-accent-light: #ffecb3;--color-on-accent: #212121;--color-success: #4caf50;--color-warning: #ff9800;--color-error: #f44336;--color-info: #2196f3;--color-background: #fafafa;--color-surface: #ffffff;--color-surface-variant: #f5f5f5;--color-on-background: #212121;--color-on-surface: #212121;--color-on-surface-variant: #757575;--color-outline: #bdbdbd;--color-outline-variant: #e0e0e0;--font-family-base: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;--font-family-display: "Merriweather", "Noto Serif SC", "Songti SC", Georgia, serif;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--text-5xl: 3rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--header-height: 64px;--max-width: 1200px;--content-padding: var(--space-4)}@media(min-width:768px){:root{--header-height: 72px;--content-padding: var(--space-6)}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family-base);font-size:var(--text-base);line-height:1.6;color:var(--color-on-background);background-color:var(--color-background);min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;color:var(--color-on-surface)}h1{font-size:var(--text-4xl)}h2{font-size:var(--text-3xl)}h3{font-size:var(--text-2xl)}h4{font-size:var(--text-xl)}h5{font-size:var(--text-lg)}h6{font-size:var(--text-base)}p{margin-bottom:var(--space-4)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-dark)}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--content-padding)}.text-center{text-align:center}.text-muted{color:var(--color-on-surface-variant)}.text-primary{color:var(--color-primary)}.text-secondary{color:var(--color-secondary)}.text-success{color:var(--color-success)}.text-warning{color:var(--color-warning)}.text-error{color:var(--color-error)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);font-family:inherit;font-size:var(--text-base);font-weight:500;line-height:1;border:none;border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-base);white-space:nowrap}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background-color:var(--color-primary);color:var(--color-on-primary)}.btn-primary:hover:not(:disabled){background-color:var(--color-primary-dark);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--color-secondary);color:var(--color-on-secondary)}.btn-secondary:hover:not(:disabled){background-color:var(--color-secondary-dark);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-outline{background-color:transparent;border:2px solid var(--color-primary);color:var(--color-primary)}.btn-outline:hover:not(:disabled){background-color:var(--color-primary);color:var(--color-on-primary)}.btn-ghost{background-color:transparent;color:var(--color-on-surface)}.btn-ghost:hover:not(:disabled){background-color:var(--color-surface-variant)}.btn-sm{padding:var(--space-2) var(--space-4);font-size:var(--text-sm)}.btn-lg{padding:var(--space-4) var(--space-8);font-size:var(--text-lg)}.card{background-color:var(--color-surface);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);overflow:hidden;transition:all var(--transition-base)}.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.card-header{padding:var(--space-4) var(--space-6);border-bottom:1px solid var(--color-outline-variant)}.card-body{padding:var(--space-6)}.card-footer{padding:var(--space-4) var(--space-6);border-top:1px solid var(--color-outline-variant);background-color:var(--color-surface-variant)}.badge{display:inline-flex;align-items:center;padding:var(--space-1) var(--space-3);font-size:var(--text-xs);font-weight:600;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.025em}.badge-primary{background-color:var(--color-primary-container);color:var(--color-on-primary-container)}.badge-secondary{background-color:var(--color-secondary-container);color:var(--color-on-secondary-container)}.badge-success{background-color:#e8f5e9;color:#1b5e20}.badge-warning{background-color:#fff3e0;color:#e65100}.badge-error{background-color:#ffebee;color:#b71c1c}.badge-info{background-color:#e3f2fd;color:#0d47a1}.form-group{margin-bottom:var(--space-4)}.form-label{display:block;margin-bottom:var(--space-2);font-size:var(--text-sm);font-weight:500;color:var(--color-on-surface)}.form-input,.form-select,.form-textarea{width:100%;padding:var(--space-3) var(--space-4);font-family:inherit;font-size:var(--text-base);line-height:1.5;color:var(--color-on-surface);background-color:var(--color-surface);border:2px solid var(--color-outline);border-radius:var(--radius-lg);transition:all var(--transition-fast)}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #e5393526}.form-input:disabled,.form-select:disabled,.form-textarea:disabled{background-color:var(--color-surface-variant);cursor:not-allowed}.form-error{margin-top:var(--space-2);font-size:var(--text-sm);color:var(--color-error)}.spinner{width:24px;height:24px;border:3px solid var(--color-outline-variant);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-overlay{display:flex;align-items:center;justify-content:center;padding:var(--space-12);color:var(--color-on-surface-variant)}.grid{display:grid;gap:var(--space-4)}.grid-cols-1{grid-template-columns:1fr}@media(min-width:640px){.sm\:grid-cols-2{grid-template-columns:repeat(2,1fr)}}@media(min-width:768px){.md\:grid-cols-2{grid-template-columns:repeat(2,1fr)}.md\:grid-cols-3{grid-template-columns:repeat(3,1fr)}}@media(min-width:1024px){.lg\:grid-cols-3{grid-template-columns:repeat(3,1fr)}.lg\:grid-cols-4{grid-template-columns:repeat(4,1fr)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fadeIn{animation:fadeIn var(--transition-base)}.animate-slideUp{animation:slideUp var(--transition-slow)}