:root{--primary:#4f46e5;--primary-hover:#4338ca;--primary-light:#eef2ff;--bg:#ffffff;--surface:#f8fafc;--surface-2:#f1f5f9;--text:#0f172a;--text-muted:#64748b;--border:#e2e8f0;--border-focus:#4f46e5;--success:#10b981;--danger:#ef4444;--warning:#f59e0b;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.05);--shadow:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -2px rgba(0,0,0,0.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -4px rgba(0,0,0,0.1);--radius:12px;--radius-sm:8px;--font-sans:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;--font-heading:'Outfit',sans-serif}[data-theme="dark"]{--primary:#6366f1;--primary-hover:#4f46e5;--primary-light:rgba(99,102,241,0.15);--bg:#090d16;--surface:#111827;--surface-2:#1f2937;--text:#f8fafc;--text-muted:#94a3b8;--border:#1f2937;--border-focus:#6366f1;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.4);--shadow:0 4px 6px -1px rgba(0,0,0,0.4);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.5)}*{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background-color:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;transition:background-color .25s ease,color .25s ease}a{color:var(--primary);text-decoration:none;transition:color .2s ease}a:hover{color:var(--primary-hover)}img{max-width:100%;height:auto;display:block}button,input,select{font-family:inherit}.container{max-width:1240px;margin:0 auto;padding:0 20px;width:100%}.navbar{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,0.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:all .2s ease}[data-theme="dark"] .navbar{background:rgba(15,23,42,0.85)}.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:70px}.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-heading);font-weight:700;font-size:1.35rem;color:var(--text);text-decoration:none}.brand-icon{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),#06b6d4);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:1.2rem;box-shadow:0 4px 10px rgba(79,70,229,0.3)}.nav-links{display:flex;align-items:center;gap:24px;list-style:none}.nav-item{position:relative}.nav-link{font-weight:500;font-size:.92rem;color:var(--text);display:flex;align-items:center;gap:6px;padding:8px 12px;border-radius:var(--radius-sm);transition:all .2s ease;cursor:pointer}.nav-link:hover{background:var(--surface-2);color:var(--primary)}.dropdown-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(4px);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:18px;min-width:680px;display:none;grid-template-columns:repeat(3,1fr);gap:8px 16px;z-index:1100;opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease}.dropdown-menu.show,.nav-item:hover .dropdown-menu{display:grid;opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}.dropdown-item{font-size:.84rem;color:var(--text);padding:7px 10px;border-radius:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:all .15s ease}.dropdown-item:hover{background:var(--primary-light);color:var(--primary);transform:translateX(3px)}.nav-actions{display:flex;align-items:center;gap:12px}.theme-toggle{background:var(--surface-2);border:1px solid var(--border);color:var(--text);width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease}.theme-toggle:hover{border-color:var(--primary);transform:rotate(15deg)}.mobile-toggle{display:none;background:none;border:none;color:var(--text);font-size:1.5rem;cursor:pointer}.breadcrumb{padding:16px 0 0 0;font-size:.85rem;color:var(--text-muted);display:flex;align-items:center;gap:8px;flex-wrap:wrap}.breadcrumb a{color:var(--text-muted)}.breadcrumb a:hover{color:var(--primary)}.breadcrumb-separator{font-size:.75rem}.hero{padding:30px 0 35px;text-align:center}.badge{display:inline-flex;align-items:center;gap:6px;background:var(--primary-light);color:var(--primary);padding:5px 14px;border-radius:999px;font-size:.82rem;font-weight:600;margin-bottom:16px;text-transform:uppercase;letter-spacing:.05em}.hero-title{font-family:var(--font-heading);font-size:2.75rem;font-weight:800;line-height:1.2;margin-bottom:16px;color:var(--text);letter-spacing:-.02em}.hero-title span{background:linear-gradient(135deg,var(--primary),#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-desc{font-size:1.15rem;color:var(--text-muted);max-width:780px;margin:0 auto 28px;line-height:1.55}.app-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:24px;margin-bottom:40px}.upload-box{border:2px dashed var(--primary);border-radius:var(--radius);padding:36px 20px;text-align:center;background:var(--bg);transition:all .25s ease;cursor:pointer;position:relative;display:block;margin-bottom:20px}.upload-box.dragover,.upload-box:hover{border-color:var(--primary-hover);background:var(--primary-light)}.upload-icon{width:56px;height:56px;margin:0 auto 14px;border-radius:50%;background:var(--surface-2);color:var(--primary);display:flex;align-items:center;justify-content:center}.upload-icon svg{width:28px;height:28px}.upload-title{font-size:1.15rem;font-weight:700;color:var(--text);margin-bottom:6px}.upload-hint{font-size:.85rem;color:var(--text-muted);margin-bottom:16px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;font-size:.92rem;font-weight:600;border-radius:var(--radius-sm);border:1px solid transparent;cursor:pointer;transition:all .2s ease;text-decoration:none;white-space:nowrap}.btn-primary{background:var(--primary);color:#ffffff}.btn-primary:hover{background:var(--primary-hover);box-shadow:0 4px 12px rgba(79,70,229,0.35);transform:translateY(-1px)}.btn-secondary{background:var(--surface-2);color:var(--text);border-color:var(--border)}.btn-secondary:hover{background:var(--border);color:var(--text)}.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}.btn-outline:hover{background:var(--primary);color:#fff}.btn-success{background:var(--success);color:#fff}.btn-success:hover{background:#059669;box-shadow:0 4px 12px rgba(16,185,129,0.35)}.btn-danger{background:transparent;color:var(--danger);border-color:rgba(239,68,68,0.3)}.btn-danger:hover{background:var(--danger);color:#fff}.btn-sm{padding:6px 12px;font-size:.82rem;border-radius:6px}.btn:disabled,.btn[disabled]{opacity:.6;cursor:not-allowed;pointer-events:none;transform:none}.samples-bar{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:16px;flex-wrap:wrap}.sample-label{font-size:.85rem;color:var(--text-muted);font-weight:500}.sample-btn{padding:5px 12px;font-size:.8rem;border-radius:999px;background:var(--surface-2);border:1px solid var(--border);color:var(--text);cursor:pointer;transition:all .2s ease}.sample-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}.workspace-grid{display:none;grid-template-columns:370px 1fr;gap:24px;margin-top:20px}.control-panel{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:16px;max-height:860px;overflow-y:auto}.panel-section{display:flex;flex-direction:column;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--border)}.panel-section-title{font-size:.92rem;font-weight:700;color:var(--text);display:flex;align-items:center;justify-content:space-between}.ai-detect-box{background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius-sm);padding:12px;display:flex;flex-direction:column;gap:10px}.object-badge-list{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}.object-chip{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:999px;background:var(--bg);border:1px solid var(--border);font-size:.8rem;color:var(--text);cursor:pointer;transition:all .15s ease}.object-chip:hover{border-color:var(--primary);color:var(--primary)}.object-chip.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 2px 8px rgba(79,70,229,0.3)}.object-box-actions{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-top:6px}.palette-swatches{display:flex;gap:6px;flex-wrap:wrap;align-items:center}.palette-swatch{width:26px;height:26px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px var(--border);cursor:pointer;transition:transform .15s ease}.palette-swatch:hover{transform:scale(1.2);z-index:2}.color-rule-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px;display:flex;flex-direction:column;gap:10px}.rule-header{display:flex;align-items:center;justify-content:space-between}.rule-title{font-size:.84rem;font-weight:600;color:var(--text)}.rule-remove{background:none;border:none;color:var(--danger);font-size:1.1rem;cursor:pointer;padding:2px 6px;border-radius:4px}.rule-remove:hover{background:rgba(239,68,68,0.1)}.color-picker-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}.picker-col{display:flex;flex-direction:column;gap:5px}.picker-col label{font-size:.76rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}.picker-input-wrap{display:flex;align-items:center;gap:6px;background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:3px 6px}.picker-color-input{width:28px;height:28px;border:none;border-radius:6px;cursor:pointer;background:none;padding:0}.picker-color-input::-webkit-color-swatch-wrapper{padding:0}.picker-color-input::-webkit-color-swatch{border:1px solid var(--border);border-radius:4px}.picker-hex{font-size:.8rem;font-family:monospace;border:none;background:none;color:var(--text);width:100%;text-transform:uppercase;outline:none}.eyedropper-btn{background:var(--surface-2);border:1px solid var(--border);border-radius:6px;color:var(--text);width:28px;height:28px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease}.eyedropper-btn:hover,.eyedropper-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.slider-group{display:flex;flex-direction:column;gap:4px}.slider-header{display:flex;align-items:center;justify-content:space-between;font-size:.78rem;font-weight:500;color:var(--text)}.slider-val{font-family:monospace;font-weight:600;color:var(--primary)}.range-slider{width:100%;accent-color:var(--primary);cursor:pointer}.switch-wrap{display:flex;align-items:center;justify-content:space-between;font-size:.82rem;color:var(--text);cursor:pointer}.switch-input{appearance:none;-webkit-appearance:none;width:36px;height:20px;background:var(--border);border-radius:999px;position:relative;outline:none;cursor:pointer;transition:background .2s ease}.switch-input:checked{background:var(--primary)}.switch-input::before{content:'';position:absolute;width:16px;height:16px;border-radius:50%;background:#fff;top:2px;left:2px;transition:transform .2s ease}.switch-input:checked::before{transform:translateX(16px)}.canvas-wrapper{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:16px;display:flex;flex-direction:column;gap:14px;position:relative}.canvas-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--border)}.tool-group{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.view-toggle-btn{padding:6px 12px;font-size:.8rem;border-radius:6px;background:var(--surface-2);border:1px solid var(--border);color:var(--text);cursor:pointer;font-weight:500;transition:all .15s ease}.view-toggle-btn.active,.view-toggle-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}.canvas-viewport{position:relative;width:100%;height:540px;background-image:linear-gradient(45deg,#e2e8f0 25%,transparent 25%),linear-gradient(-45deg,#e2e8f0 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e2e8f0 75%),linear-gradient(-45deg,transparent 75%,#e2e8f0 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0;border-radius:var(--radius-sm);overflow:hidden;display:flex;align-items:center;justify-content:center}[data-theme="dark"] .canvas-viewport{background-image:linear-gradient(45deg,#1f2937 25%,transparent 25%),linear-gradient(-45deg,#1f2937 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#1f2937 75%),linear-gradient(-45deg,transparent 75%,#1f2937 75%)}.canvas-inner{position:relative;max-width:100%;max-height:500px;user-select:none;display:inline-block}#main-canvas{display:block;max-width:100%;max-height:500px;object-fit:contain}#split-canvas{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:contain;pointer-events:none}#bbox-overlay{position:absolute;top:0;left:0;width:100%;height:100%;cursor:default}#split-slider-handle{position:absolute;top:0;bottom:0;width:3px;background:#fff;box-shadow:0 0 8px rgba(0,0,0,0.5);cursor:ew-resize;transform:translateX(-50%);z-index:20;display:flex;align-items:center;justify-content:center}.handle-grip{width:28px;height:28px;background:#fff;border:2px solid var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--primary);box-shadow:var(--shadow)}.loupe-box{position:absolute;width:90px;height:90px;border-radius:50%;border:3px solid #fff;box-shadow:0 4px 15px rgba(0,0,0,0.4);pointer-events:none;z-index:40;display:none;background:#000;overflow:hidden}.loupe-center-dot{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:6px;height:6px;border:1px solid #fff;border-radius:50%;background:rgba(255,0,0,0.7);z-index:41}.loupe-badge{position:absolute;bottom:4px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,0.75);color:#fff;font-size:9px;font-family:monospace;padding:1px 5px;border-radius:3px;z-index:42}.image-info-bar{font-size:.82rem;color:var(--text-muted);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.alert-banner{padding:10px 14px;border-radius:var(--radius-sm);font-size:.84rem;display:none;align-items:center;gap:8px}.alert-banner.error{background:rgba(239,68,68,0.12);color:var(--danger);border:1px solid rgba(239,68,68,0.25);display:flex}.alert-banner.success{background:rgba(16,185,129,0.12);color:var(--success);border:1px solid rgba(16,185,129,0.25);display:flex}.output-actions{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;padding-top:20px;border-top:1px solid var(--border);margin-top:20px}.actions-left{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.actions-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.download-select{background:var(--bg);color:var(--text);border:1px solid var(--border);padding:9px 12px;border-radius:var(--radius-sm);font-size:.88rem;cursor:pointer;outline:none}.tools-grid-section{padding:40px 0;background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.section-header{text-align:center;margin-bottom:32px}.section-title{font-family:var(--font-heading);font-size:2rem;font-weight:700;color:var(--text);margin-bottom:10px}.section-desc{font-size:1.05rem;color:var(--text-muted);max-width:680px;margin:0 auto}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}.tool-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px;display:flex;align-items:center;gap:12px;color:var(--text);font-weight:500;font-size:.88rem;transition:all .2s ease;box-shadow:var(--shadow-sm)}.tool-card:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow)}.tool-icon{width:32px;height:32px;border-radius:8px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;flex-shrink:0}.features-section{padding:60px 0}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:all .25s ease}.feature-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:var(--shadow)}.feature-icon{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#06b6d4);color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:16px}.feature-title{font-family:var(--font-heading);font-size:1.2rem;font-weight:700;color:var(--text);margin-bottom:8px}.feature-desc{font-size:.92rem;color:var(--text-muted);line-height:1.55}.how-section{padding:50px 0;background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.step-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:22px;position:relative;text-align:center}.step-num{position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:28px;height:28px;border-radius:50%;background:var(--primary);color:#fff;font-weight:700;font-size:.85rem;display:flex;align-items:center;justify-content:center}.step-title{font-family:var(--font-heading);font-size:1.05rem;font-weight:700;margin:12px 0 8px}.step-desc{font-size:.88rem;color:var(--text-muted)}.seo-section{padding:60px 0}.seo-content{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:36px;max-width:960px;margin:0 auto}.seo-content h2{font-family:var(--font-heading);font-size:1.75rem;font-weight:700;color:var(--text);margin-bottom:16px}.seo-content p{color:var(--text-muted);font-size:1rem;line-height:1.75;margin-bottom:16px}.seo-content ol{margin:16px 0 20px 24px;color:var(--text-muted)}.seo-content li{margin-bottom:8px;line-height:1.6}.faq-section{padding:50px 0;background:var(--surface);border-top:1px solid var(--border)}.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}.faq-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:all .2s ease}.faq-question{width:100%;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;background:none;border:none;text-align:left;font-size:1.02rem;font-weight:600;color:var(--text);cursor:pointer}.faq-icon{font-size:1.2rem;transition:transform .25s ease;color:var(--primary)}.faq-item.active .faq-icon{transform:rotate(180deg)}.faq-answer{padding:0 20px 18px;font-size:.92rem;color:var(--text-muted);line-height:1.65;display:none}.faq-item.active .faq-answer{display:block}.cta-section{padding:60px 0;text-align:center;background:linear-gradient(135deg,rgba(79,70,229,0.08),rgba(6,182,212,0.08))}.cta-card{max-width:760px;margin:0 auto;padding:40px 20px}.cta-title{font-family:var(--font-heading);font-size:2.2rem;font-weight:800;color:var(--text);margin-bottom:14px}.cta-desc{font-size:1.05rem;color:var(--text-muted);margin-bottom:28px}.cta-buttons{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap}.footer{background:var(--bg);border-top:1px solid var(--border);padding:60px 0 30px;font-size:.88rem}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:36px;margin-bottom:40px}.footer-col-title{font-family:var(--font-heading);font-size:.95rem;font-weight:700;color:var(--text);text-transform:uppercase;letter-spacing:.05em;margin-bottom:16px}.footer-links{list-style:none;display:flex;flex-direction:column;gap:9px}.footer-links a{color:var(--text-muted);font-size:.85rem}.footer-links a:hover{color:var(--primary)}.trademark-disclaimer{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px;font-size:.8rem;color:var(--text-muted);margin-bottom:28px;line-height:1.5}.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;padding-top:24px;border-top:1px solid var(--border);color:var(--text-muted);font-size:.84rem}.cookie-banner{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);max-width:560px;width:calc(100% - 40px);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow-lg);z-index:9999;display:flex;align-items:center;justify-content:space-between;gap:16px;animation:slideUp .3s ease}@keyframes slideUp{from{bottom:-100px;opacity:0}to{bottom:20px;opacity:1}}.cookie-text{font-size:.84rem;color:var(--text-muted);line-height:1.45}.cookie-text a{text-decoration:underline}.cookie-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}.toast{position:fixed;bottom:24px;right:24px;background:var(--text);color:var(--bg);padding:10px 18px;border-radius:var(--radius-sm);font-size:.88rem;box-shadow:var(--shadow-lg);z-index:10000;opacity:0;transform:translateY(10px);transition:all .25s ease;pointer-events:none}.toast.show{opacity:1;transform:translateY(0)}@media(max-width:1024px){.workspace-grid{grid-template-columns:1fr}.control-panel{max-height:none}.features-grid{grid-template-columns:repeat(2,1fr)}.steps-grid{grid-template-columns:repeat(2,1fr)}.dropdown-menu{min-width:480px;grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);padding:20px;flex-direction:column;gap:12px;box-shadow:var(--shadow-lg)}.nav-links.open{display:flex}.dropdown-menu{position:static;transform:none;min-width:100%;box-shadow:none;border:none;padding:10px 0;grid-template-columns:1fr}.mobile-toggle{display:block}.hero-title{font-size:2.1rem}.features-grid{grid-template-columns:1fr}.steps-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:24px}.footer-bottom{flex-direction:column;text-align:center}.cookie-banner{flex-direction:column;align-items:flex-start}}