:root{color-scheme:light dark;accent-color:#3B82F6;--primary-50: #eff6ff;--primary-100: #dbeafe;--primary-200: #bfdbfe;--primary-300: #93c5fd;--primary-400: #60a5fa;--primary-500: #3b82f6;--primary-600: #2563eb;--primary-700: #1d4ed8;--primary-800: #1e40af;--primary-900: #1e3a8a;--success-50: #ecfdf5;--success-100: #d1fae5;--success-200: #a7f3d0;--success-300: #6ee7b7;--success-400: #34d399;--success-500: #10b981;--success-600: #059669;--success-700: #047857;--success-800: #065f46;--success-900: #064e3b;--warning-50: #fffbeb;--warning-100: #fef3c7;--warning-200: #fde68a;--warning-300: #fcd34d;--warning-400: #fbbf24;--warning-500: #f59e0b;--warning-600: #d97706;--warning-700: #b45309;--warning-800: #92400e;--warning-900: #78350f;--error-50: #fef2f2;--error-100: #fee2e2;--error-200: #fecaca;--error-300: #fca5a5;--error-400: #f87171;--error-500: #ef4444;--error-600: #dc2626;--error-700: #b91c1c;--error-800: #991b1b;--error-900: #7f1d1d;--gray-50: #f8fafc;--gray-100: #f1f5f9;--gray-200: #e2e8f0;--gray-300: #cbd5e1;--gray-400: #94a3b8;--gray-500: #64748b;--gray-600: #475569;--gray-700: #334155;--gray-800: #1e293b;--gray-900: #0f172a;--color-bg-primary: var(--gray-50);--color-bg-secondary: #ffffff;--color-bg-tertiary: var(--gray-100);--color-text-primary: var(--gray-900);--color-text-secondary: var(--gray-600);--color-text-tertiary: var(--gray-600);--color-border-primary: var(--gray-200);--color-border-secondary: var(--gray-300);--color-surface-elevated: #ffffff;--color-surface-overlay: rgba(0, 0, 0, .1);--color-interactive-primary: var(--primary-600);--color-interactive-primary-hover: var(--primary-700);--color-interactive-primary-active: var(--primary-800);--color-interactive-secondary: var(--gray-100);--color-interactive-secondary-hover: var(--gray-200);--color-focus-ring: var(--primary-500);--space-0: 0;--space-px: 1px;--space-0-5: 2px;--space-1: 4px;--space-1-5: 6px;--space-2: 8px;--space-2-5: 10px;--space-3: 12px;--space-3-5: 14px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-7: 28px;--space-8: 32px;--space-9: 36px;--space-10: 40px;--space-11: 44px;--space-12: 48px;--space-14: 56px;--space-16: 64px;--space-20: 80px;--space-24: 96px;--space-32: 128px;--font-family-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue", sans-serif;--font-family-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;--font-size-xs: 12px;--font-size-sm: 14px;--font-size-base: 16px;--font-size-lg: 18px;--font-size-xl: 20px;--font-size-2xl: 24px;--font-size-3xl: 30px;--font-size-4xl: 36px;--font-size-5xl: 48px;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.25;--line-height-snug: 1.375;--line-height-normal: 1.5;--line-height-relaxed: 1.625;-o-tab-size:2;tab-size:2;-moz-tab-size:2;--radius-none: 0;--radius-sm: 2px;--radius-base: 4px;--radius-md: 6px;--radius-lg: 8px;--radius-xl: 12px;--radius-2xl: 16px;--radius-3xl: 24px;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-base: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px 0 rgba(0, 0, 0, .06);--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);--shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, .25);--transition-fast: .15s ease-in-out;--transition-base: .25s ease-in-out;--transition-slow: .35s ease-in-out;--z-dropdown: 1000;--z-sticky: 1020;--z-fixed: 1030;--z-modal-backdrop: 1040;--z-modal: 1050;--z-popover: 1060;--z-tooltip: 1070;--z-toast: 1080}@media (prefers-color-scheme: dark){:root{--color-bg-primary: var(--gray-900);--color-bg-secondary: var(--gray-800);--color-bg-tertiary: var(--gray-700);--color-text-primary: var(--gray-50);--color-text-secondary: var(--gray-300);--color-text-tertiary: var(--gray-400);--color-border-primary: var(--gray-700);--color-border-secondary: var(--gray-600);--color-surface-elevated: var(--gray-800);--color-surface-overlay: rgba(255, 255, 255, .08);--color-interactive-primary: var(--primary-500);--color-interactive-primary-hover: var(--primary-400);--color-interactive-primary-active: var(--primary-300);--color-interactive-secondary: var(--gray-700);--color-interactive-secondary-hover: var(--gray-600)}}@media (prefers-reduced-transparency: reduce){:root{--color-surface-overlay: var(--gray-800)}}@media (prefers-reduced-transparency: reduce) and (prefers-color-scheme: dark){:root{--color-surface-overlay: var(--gray-200)}}*,*:before,*:after{box-sizing:border-box}*{margin:0;padding:0}html{overflow-x:hidden;-webkit-text-size-adjust:100%;-moz-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}body{font-family:var(--font-family-sans);font-size:var(--font-size-base);font-weight:var(--font-weight-normal);line-height:var(--line-height-normal);color:var(--color-text-primary);background-color:var(--color-bg-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:var(--font-weight-semibold);line-height:var(--line-height-tight);color:var(--color-text-primary);overflow-wrap:anywhere;text-wrap:balance}h1{font-size:var(--font-size-3xl);margin-bottom:var(--space-6)}h2{font-size:var(--font-size-2xl);margin-bottom:var(--space-5)}h3{font-size:var(--font-size-xl);margin-bottom:var(--space-4)}h4{font-size:var(--font-size-lg);margin-bottom:var(--space-3)}h5{font-size:var(--font-size-base);margin-bottom:var(--space-3)}h6{font-size:var(--font-size-sm);margin-bottom:var(--space-2)}p{margin-bottom:var(--space-4);color:var(--color-text-secondary);overflow-wrap:break-word;text-wrap:pretty;hyphens:auto;-webkit-hyphens:auto}pre,code{font-family:var(--font-family-mono)}code{background-color:var(--color-bg-tertiary);padding:var(--space-1) var(--space-2);border-radius:var(--radius-sm);font-size:.875em}pre{background-color:var(--color-bg-tertiary);padding:var(--space-4);border-radius:var(--radius-lg);overflow-x:auto;margin-bottom:var(--space-4)}pre code{background:none;padding:0}a{color:var(--color-interactive-primary);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px;transition:color var(--transition-fast)}a:hover{color:var(--color-interactive-primary-hover);text-decoration-thickness:2px}a:focus{outline:2px solid var(--color-focus-ring);outline-offset:2px;border-radius:var(--radius-sm)}a:focus:not(:focus-visible){outline:none}a:focus-visible{outline:2px solid var(--color-focus-ring);outline-offset:2px}:where(button,[role=button],input,select,textarea):focus-visible{outline:2px solid var(--color-focus-ring);outline-offset:2px;border-radius:var(--radius-sm)}ul,ol{margin-bottom:var(--space-4);padding-left:var(--space-6)}li{margin-bottom:var(--space-1);color:var(--color-text-secondary)}input,textarea,select,button{font-family:inherit;font-size:inherit}input,textarea,select{padding:var(--space-3) var(--space-4);border:1px solid var(--color-border-primary);border-radius:var(--radius-lg);background-color:var(--color-bg-secondary);color:var(--color-text-primary);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--color-interactive-primary);box-shadow:0 0 0 3px #3b82f61a}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);font-size:var(--font-size-base);font-weight:var(--font-weight-medium);text-decoration:none;border:1px solid transparent;border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);min-height:48px;min-width:48px;position:relative}.btn:focus-visible{outline:2px solid var(--color-focus-ring);outline-offset:2px}.btn:focus:not(:focus-visible){outline:none}.btn:disabled{opacity:.6;cursor:not-allowed;pointer-events:none}.btn-primary{background-color:var(--color-interactive-primary);color:#fff;border-color:var(--color-interactive-primary)}.btn-primary:hover{background-color:var(--color-interactive-primary-hover);border-color:var(--color-interactive-primary-hover);color:#fff;text-decoration:none}.btn-primary:active{background-color:var(--color-interactive-primary-active);border-color:var(--color-interactive-primary-active)}.btn-secondary{background-color:var(--color-interactive-secondary);color:var(--color-text-primary);border-color:var(--color-border-primary)}.btn-secondary:hover{background-color:var(--color-interactive-secondary-hover);color:var(--color-text-primary);text-decoration:none}.btn-ghost{background-color:transparent;color:var(--color-interactive-primary);border-color:transparent}.btn-ghost:hover{background-color:var(--color-interactive-secondary);color:var(--color-interactive-primary);text-decoration:none}.m-0{margin:0}.m-1{margin:var(--space-1)}.m-2{margin:var(--space-2)}.m-3{margin:var(--space-3)}.m-4{margin:var(--space-4)}.m-6{margin:var(--space-6)}.m-8{margin:var(--space-8)}.mt-0{margin-top:0}.mt-1{margin-top:var(--space-1)}.mt-2{margin-top:var(--space-2)}.mt-3{margin-top:var(--space-3)}.mt-4{margin-top:var(--space-4)}.mt-6{margin-top:var(--space-6)}.mt-8{margin-top:var(--space-8)}.mb-0{margin-bottom:0}.mb-1{margin-bottom:var(--space-1)}.mb-2{margin-bottom:var(--space-2)}.mb-3{margin-bottom:var(--space-3)}.mb-4{margin-bottom:var(--space-4)}.mb-6{margin-bottom:var(--space-6)}.mb-8{margin-bottom:var(--space-8)}.p-0{padding:0}.p-1{padding:var(--space-1)}.p-2{padding:var(--space-2)}.p-3{padding:var(--space-3)}.p-4{padding:var(--space-4)}.p-6{padding:var(--space-6)}.p-8{padding:var(--space-8)}.text-xs{font-size:var(--font-size-xs)}.text-sm{font-size:var(--font-size-sm)}.text-base{font-size:var(--font-size-base)}.text-lg{font-size:var(--font-size-lg)}.text-xl{font-size:var(--font-size-xl)}.text-2xl{font-size:var(--font-size-2xl)}.text-3xl{font-size:var(--font-size-3xl)}.font-normal{font-weight:var(--font-weight-normal)}.font-medium{font-weight:var(--font-weight-medium)}.font-semibold{font-weight:var(--font-weight-semibold)}.font-bold{font-weight:var(--font-weight-bold)}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.text-primary{color:var(--color-text-primary)}.text-secondary{color:var(--color-text-secondary)}.text-tertiary{color:var(--color-text-tertiary)}.bg-primary{background-color:var(--color-bg-primary)}.bg-secondary{background-color:var(--color-bg-secondary)}.bg-tertiary{background-color:var(--color-bg-tertiary)}.border{border:1px solid var(--color-border-primary)}.border-secondary{border:1px solid var(--color-border-secondary)}.border-0{border:none}.rounded{border-radius:var(--radius-base)}.rounded-sm{border-radius:var(--radius-sm)}.rounded-lg{border-radius:var(--radius-lg)}.rounded-xl{border-radius:var(--radius-xl)}.rounded-2xl{border-radius:var(--radius-2xl)}.rounded-full{border-radius:var(--radius-full)}.shadow{box-shadow:var(--shadow-base)}.shadow-sm{box-shadow:var(--shadow-sm)}.shadow-md{box-shadow:var(--shadow-md)}.shadow-lg{box-shadow:var(--shadow-lg)}.shadow-xl{box-shadow:var(--shadow-xl)}.shadow-none{box-shadow:none}.block{display:block}.inline-block{display:inline-block}.inline{display:inline}.flex{display:flex}.inline-flex{display:inline-flex}.grid{display:grid}.hidden{display:none}.flex-col{flex-direction:column}.flex-row{flex-direction:row}.flex-wrap{flex-wrap:wrap}.items-center{align-items:center}.items-start{align-items:flex-start}.items-end{align-items:flex-end}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.justify-start{justify-content:flex-start}.justify-end{justify-content:flex-end}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}.skip-link{position:absolute;top:-40px;left:6px;background:var(--color-interactive-primary);color:#fff;padding:var(--space-2) var(--space-4);text-decoration:none;border-radius:var(--radius-base);z-index:var(--z-tooltip);transition:top var(--transition-fast)}.skip-link:focus{top:6px;outline:2px solid white;outline-offset:2px}.focus-ring:focus{outline:2px solid var(--color-focus-ring);outline-offset:2px;border-radius:var(--radius-sm)}.focus-ring:focus:not(:focus-visible){outline:none}@media (min-width: 640px){.sm\:block{display:block}.sm\:hidden{display:none}.sm\:flex{display:flex}.sm\:text-sm{font-size:var(--font-size-sm)}.sm\:text-base{font-size:var(--font-size-base)}.sm\:text-lg{font-size:var(--font-size-lg)}.sm\:text-xl{font-size:var(--font-size-xl)}.sm\:text-2xl{font-size:var(--font-size-2xl)}.sm\:p-6{padding:var(--space-6)}.sm\:p-8{padding:var(--space-8)}}@media (min-width: 768px){.md\:block{display:block}.md\:hidden{display:none}.md\:flex{display:flex}.md\:grid{display:grid}.md\:flex-row{flex-direction:row}.md\:text-lg{font-size:var(--font-size-lg)}.md\:text-xl{font-size:var(--font-size-xl)}.md\:text-2xl{font-size:var(--font-size-2xl)}.md\:text-3xl{font-size:var(--font-size-3xl)}}@media (min-width: 1024px){.lg\:block{display:block}.lg\:hidden{display:none}.lg\:text-xl{font-size:var(--font-size-xl)}.lg\:text-2xl{font-size:var(--font-size-2xl)}.lg\:text-3xl{font-size:var(--font-size-3xl)}.lg\:text-4xl{font-size:var(--font-size-4xl)}}.card{background-color:var(--color-surface-elevated);border:1px solid var(--color-border-primary);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);padding:var(--space-6);transition:box-shadow var(--transition-fast),transform var(--transition-fast)}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.skeleton{background:linear-gradient(90deg,var(--color-bg-tertiary) 25%,var(--color-border-primary) 50%,var(--color-bg-tertiary) 75%);background-size:200% 100%;animation:skeleton-loading 1.5s infinite ease-in-out}@keyframes skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.toast{position:fixed;top:var(--space-4);right:var(--space-4);background-color:var(--color-surface-elevated);border:1px solid var(--color-border-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:var(--space-4);z-index:var(--z-toast);max-width:400px;animation:toast-slide-in .3s ease-out}@keyframes toast-slide-in{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.toast-success{border-left:4px solid var(--success-500)}.toast-error{border-left:4px solid var(--error-500)}.toast-warning{border-left:4px solid var(--warning-500)}.progress-bar{width:100%;height:var(--space-2);background-color:var(--color-bg-tertiary);border-radius:var(--radius-full);overflow:hidden}.progress-bar-fill{height:100%;background-color:var(--color-interactive-primary);border-radius:var(--radius-full);transition:width var(--transition-base)}.upload-zone{border:2px dashed var(--color-border-secondary);border-radius:var(--radius-xl);padding:var(--space-8);text-align:center;transition:all var(--transition-fast);cursor:pointer;background-color:var(--color-bg-secondary)}.upload-zone:hover{border-color:var(--color-interactive-primary);background-color:var(--primary-50)}.upload-zone.dragover{border-color:var(--color-interactive-primary);background-color:var(--primary-50);transform:scale(1.02)}@media (prefers-color-scheme: dark){.upload-zone:hover,.upload-zone.dragover{background-color:var(--primary-900)}}.aspect-square{aspect-ratio:1}.aspect-video{aspect-ratio:16 / 9}.aspect-3-4{aspect-ratio:3 / 4}.contain-layout{contain:layout}.contain-size{contain:size}.contain-style{contain:style}@media (prefers-contrast: high){:root{--color-border-primary: var(--gray-600);--color-border-secondary: var(--gray-700)}.btn,.card{border-width:2px}}@media print{*{background:transparent!important;color:#000!important;box-shadow:none!important;text-shadow:none!important}a,a:visited{text-decoration:underline}a[href^=http]:after,a[href^=mailto]:after{content:" (" attr(href) ")"}.no-print{display:none!important}.print-only{display:block!important}}@media (max-width: 767px){.btn{min-height:48px;min-width:48px;padding:var(--space-4) var(--space-6)}input,textarea,select{min-height:48px;font-size:16px}a,button,[role=button]{min-height:44px;min-width:44px}}.sponsor-banner{min-height:90px;background-color:var(--color-bg-tertiary);border:1px solid var(--color-border-primary);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;color:var(--color-text-tertiary);font-size:var(--font-size-sm);margin:var(--space-4) 0}.sponsor-sidebar{min-height:250px;width:300px;background-color:var(--color-bg-tertiary);border:1px solid var(--color-border-primary);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;color:var(--color-text-tertiary);font-size:var(--font-size-sm)}@media (max-width: 767px){.sponsor-sidebar{display:none}.sponsor-banner{min-height:50px}}.file-preview{background-color:var(--color-bg-secondary);border:1px solid var(--color-border-primary);border-radius:var(--radius-lg);padding:var(--space-4);margin:var(--space-2) 0;display:flex;align-items:center;gap:var(--space-3)}.file-icon{width:32px;height:32px;color:var(--color-interactive-primary)}.file-info{flex:1;min-width:0}.file-name{font-weight:var(--font-weight-medium);color:var(--color-text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-size{font-size:var(--font-size-sm);color:var(--color-text-tertiary)}.processing{position:relative;overflow:hidden}.processing:after{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(59,130,246,.2),transparent);animation:processing-shimmer 2s infinite}@keyframes processing-shimmer{0%{left:-100%}to{left:100%}}.trust-badge{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);background-color:var(--success-50);color:var(--success-700);border:1px solid var(--success-200);border-radius:var(--radius-full);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium)}@media (prefers-color-scheme: dark){.trust-badge{background-color:var(--success-900);color:var(--success-200);border-color:var(--success-700)}}.security-indicator{display:flex;align-items:center;gap:var(--space-2);color:var(--color-text-tertiary);font-size:var(--font-size-sm)}.security-icon{width:16px;height:16px;color:var(--success-500)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--space-4)}@media (min-width: 640px){.container{padding:0 var(--space-6)}}@media (min-width: 1024px){.container{padding:0 var(--space-8)}}.section{padding:var(--space-16) 0}@media (max-width: 767px){.section{padding:var(--space-12) 0}}.grid-cols-1{grid-template-columns:repeat(1,1fr)}.grid-cols-2{grid-template-columns:repeat(2,1fr)}.grid-cols-3{grid-template-columns:repeat(3,1fr)}.grid-cols-4{grid-template-columns:repeat(4,1fr)}.gap-2{gap:var(--space-2)}.gap-3{gap:var(--space-3)}.gap-4{gap:var(--space-4)}.gap-6{gap:var(--space-6)}.gap-8{gap:var(--space-8)}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes slide-up{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes bounce{0%,20%,53%,80%,to{transform:translateZ(0)}40%,43%{transform:translate3d(0,-8px,0)}70%{transform:translate3d(0,-4px,0)}90%{transform:translate3d(0,-2px,0)}}.animate-fade-in{animation:fade-in .3s ease-out}.animate-slide-up{animation:slide-up .4s ease-out}.animate-bounce{animation:bounce 1s infinite}@media (prefers-reduced-motion: reduce){.animate-fade-in,.animate-slide-up,.animate-bounce{animation:none}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-tertiary)}::-webkit-scrollbar-thumb{background:var(--color-border-secondary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-text-tertiary)}*{scrollbar-width:thin;scrollbar-color:var(--color-border-secondary) var(--color-bg-tertiary)}@media (prefers-contrast: more),(forced-colors: active){*{scrollbar-width:auto}}::-moz-selection{background-color:var(--primary-200);color:var(--gray-900)}::selection{background-color:var(--primary-200);color:var(--gray-900)}@media (prefers-color-scheme: dark){::-moz-selection{background-color:var(--primary-700);color:var(--gray-50)}::selection{background-color:var(--primary-700);color:var(--gray-50)}}.error-boundary{padding:var(--space-8);text-align:center;background-color:var(--error-50);border:1px solid var(--error-200);border-radius:var(--radius-xl);margin:var(--space-4) 0}@media (prefers-color-scheme: dark){.error-boundary{background-color:var(--error-900);border-color:var(--error-700)}}.error-title{color:var(--error-600);font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);margin-bottom:var(--space-2)}@media (prefers-color-scheme: dark){.error-title{color:var(--error-300)}}.error-message{color:var(--error-700);margin-bottom:var(--space-4)}@media (prefers-color-scheme: dark){.error-message{color:var(--error-200)}}