*{box-sizing:border-box;margin:0;padding:0}:root{--color-primary:#4f46e5;--color-success:#10b981;--color-danger:#dc2626;--color-background:#f9fafb;--color-card-bg:#fff;--color-text-dark:#1f2937;--color-text-medium:#4b5563;--color-border-light:#e5e7eb;--space-2xs:4px;--space-xs:8px;--space-sm:16px;--space-md:24px;--space-lg:32px;--space-xl:48px;--space-2xl:64px;--space-3xl:80px}html,body{background-color:var(--color-background);min-height:100vh;color:var(--color-text-dark);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol;line-height:1.5}.app-container{flex-direction:column;min-height:100vh;display:flex}.ad-top{background-color:var(--color-background);border-bottom:1px solid var(--color-border-light);z-index:10;flex-shrink:0;justify-content:center;align-items:center;width:100%;height:64px;display:flex}.ad-in-content-section{width:100%;height:90px;margin-top:var(--space-3xl);margin-bottom:var(--space-xl);justify-content:center;align-items:center;max-width:728px;margin-left:auto;margin-right:auto;display:flex}.ad-placeholder{width:100%;height:100%;color:var(--color-text-medium);background-color:#f3f4f6;border:1px dashed #d1d5db;border-radius:4px;justify-content:center;align-items:center;font-size:.875rem;line-height:1.2;display:flex}.ad-sidebar-left,.ad-sidebar-right{padding:var(--space-md);flex-shrink:0;width:160px}@media (min-width:768px){.ad-sidebar-left,.ad-sidebar-right{padding:var(--space-lg);width:256px}}.content-wrapper{padding:var(--space-lg);flex-grow:1;justify-content:center;display:flex}@media (min-width:768px){.content-wrapper{padding:var(--space-xl)}}.main-content{flex-grow:1;width:100%;max-width:1280px}.header-container{text-align:center;margin-bottom:var(--space-3xl);padding-top:var(--space-md)}.header-title{letter-spacing:-.05em;margin-bottom:var(--space-sm);background:linear-gradient(90deg,#4f46e5,#7c3aed);-webkit-text-fill-color:transparent;color:#0000;-webkit-background-clip:text;background-clip:text;font-size:3.75rem;font-weight:900;line-height:1.1}@media (max-width:767px){.header-title{font-size:2.5rem}}.header-subtitle{color:var(--color-text-medium);max-width:48rem;margin-left:auto;margin-right:auto;font-size:1.25rem;line-height:1.6}.tool-card{background-color:var(--color-card-bg);padding:var(--space-3xl);border:1px solid var(--color-border-light);border-radius:16px;box-shadow:0 10px 30px #0000001a,0 4px 10px #0000000d}@media (max-width:767px){.tool-card{padding:var(--space-xl)}}.hidden-input{display:none}.upload-area{width:100%;min-height:280px;padding:var(--space-xl);text-align:center;cursor:pointer;border:2px dashed #d1d5db;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;transition:all .3s;display:flex}.upload-area:hover,.upload-area.drag-active{border-color:var(--color-primary);background-color:#f0f4ff}.upload-icon{margin-bottom:var(--space-sm);color:var(--color-primary)}.upload-text{margin-bottom:var(--space-2xs);font-size:1.25rem;font-weight:600}.upload-link{color:var(--color-primary);font-weight:700;transition:color .15s}.upload-subtext{color:var(--color-text-medium);font-size:.9375rem}.comparison-grid{gap:var(--space-2xl);grid-template-columns:1fr;display:grid}@media (min-width:1024px){.comparison-grid{grid-template-columns:1fr 1fr}}.panel-title{margin-bottom:var(--space-sm);justify-content:space-between;align-items:center;font-size:1.5rem;font-weight:600;display:flex}.image-frame{aspect-ratio:1;width:100%;padding:var(--space-xs);background-color:#f3f4f6;border-radius:8px;justify-content:center;align-items:center;display:flex;overflow:hidden;box-shadow:inset 0 0 5px #0000000d}.preview-image{-o-object-fit:contain;object-fit:contain;-webkit-user-select:none;user-select:none;pointer-events:none;max-width:100%;max-height:100%}.preview-image.enhanced{border:4px solid var(--color-success);transition:all .5s}.placeholder-content{padding:var(--space-lg)}.loading-spinner{color:var(--color-primary);margin-bottom:var(--space-sm);animation:1s linear infinite spin}.loading-text{color:var(--color-primary);margin-bottom:var(--space-2xs);font-weight:600}.loading-subtext{color:var(--color-text-medium);font-size:.875rem}.action-group{justify-content:center;align-items:center;gap:var(--space-md);padding-top:var(--space-xl);flex-direction:column;display:flex}@media (min-width:768px){.action-group{flex-direction:row}}.btn{cursor:pointer;border:none;border-radius:9999px;width:100%;max-width:340px;padding:14px 40px;font-size:1.125rem;font-weight:700;transition:all .3s;box-shadow:0 4px 8px #0000001a}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background-color:#4338ca;box-shadow:0 6px 10px #4f46e580}.btn-download{background-color:var(--color-success);color:#fff}.btn-download:hover:not(:disabled){background-color:#059669;box-shadow:0 6px 10px #10b98180}.btn-icon{margin-right:var(--space-xs)}.btn-remove{color:var(--color-danger);padding:var(--space-2xs)var(--space-xs);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:6px;align-items:center;font-size:.875rem;font-weight:500;transition:all .15s;display:flex}.btn-remove:hover{color:#991b1b;background-color:#fef2f2;border-color:#fca5a5}.error-message{width:100%;color:var(--color-danger);background-color:#fee2e2;border-radius:8px;padding:12px 20px;font-size:.9375rem;font-weight:500;line-height:1.4}.features-section{margin-top:var(--space-2xl);margin-bottom:var(--space-3xl)}.section-heading{text-align:center;margin-bottom:var(--space-xl);font-size:2rem;font-weight:700}.features-grid{gap:var(--space-md);grid-template-columns:1fr;display:grid}@media (min-width:768px){.features-grid{gap:var(--space-lg);grid-template-columns:repeat(3,1fr)}}.feature-card{padding:var(--space-lg);border:1px solid var(--color-border-light);border-radius:12px;transition:box-shadow .3s;box-shadow:0 5px 15px #0000000d}.feature-icon-wrapper{margin-bottom:var(--space-sm);color:var(--color-primary)}.feature-title{margin-bottom:var(--space-xs);font-size:1.25rem;font-weight:600}.feature-description{color:var(--color-text-medium);line-height:1.6}.seo-block{margin-top:var(--space-3xl);padding:var(--space-xl);background-color:var(--color-card-bg);border:1px solid var(--color-border-light);border-radius:12px;box-shadow:0 5px 15px #0000000d}.seo-heading{margin-bottom:var(--space-md);font-size:1.75rem;font-weight:700}.seo-text{color:var(--color-text-medium);line-height:1.7}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}