.filter-app{display:flex;gap:24px;max-width:1200px;margin:0 auto;padding:24px 20px 60px;align-items:stretch}.filter-settings{width:340px;min-width:300px;flex-shrink:0;display:flex;flex-direction:column;max-height:1200px}.filter-panel{background:var(--card-bg);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow);border:1px solid var(--border);flex:1;display:flex;flex-direction:column;max-height:1200px;overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:var(--border) transparent}.filter-panel::-webkit-scrollbar{width:5px}.filter-panel::-webkit-scrollbar-track{background:transparent}.filter-panel::-webkit-scrollbar-thumb{background:var(--border);border-radius:10px}.filter-panel-title{display:flex;align-items:center;gap:8px;font-size:.95rem;font-weight:700;color:var(--dark);margin:0 0 14px}.filter-panel-title svg{color:var(--primary)}.filter-section-title{display:flex;align-items:center;gap:6px;font-size:.82rem;font-weight:600;color:var(--primary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:12px}.filter-section-title svg{color:var(--primary)}.filter-preset-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:16px}.filter-preset-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:10px 4px;border:1.5px solid var(--border);border-radius:var(--radius-md);background:var(--bg-white);color:var(--text-muted);font-size:.72rem;font-weight:500;cursor:pointer;transition:var(--transition);text-align:center}.filter-preset-item:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}.filter-preset-item.active{border-color:var(--primary);color:var(--primary);background:var(--primary-light);font-weight:600;box-shadow:0 0 0 2px #0052ff1a}.filter-preset-dot{width:26px;height:26px;border-radius:50%;flex-shrink:0;box-shadow:0 2px 6px #0000001f}.filter-divider{height:1px;background:var(--border);margin:4px 0 14px}.filter-slider-group{margin-bottom:14px}.filter-slider-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.filter-slider-label{display:flex;align-items:center;gap:6px;font-size:.88rem;font-weight:600;color:var(--dark)}.filter-slider-label svg{color:var(--text-muted);flex-shrink:0}.filter-slider-value{font-size:.82rem;font-weight:700;color:var(--primary);min-width:36px;text-align:right}.filter-slider{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:3px;background:var(--border);outline:none;cursor:pointer}.filter-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--primary);cursor:pointer;box-shadow:0 2px 8px #0052ff59;border:3px solid white;transition:box-shadow .2s}.filter-slider::-webkit-slider-thumb:hover{box-shadow:0 2px 14px #0052ff80}.filter-slider::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--primary);cursor:pointer;box-shadow:0 2px 8px #0052ff59;border:3px solid white}.filter-row-sliders{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:14px}.filter-row-slider .filter-slider-header{margin-bottom:6px}.filter-row-slider .filter-slider-label{font-size:.82rem}.filter-row-slider .filter-slider::-webkit-slider-thumb{width:16px;height:16px}.filter-row-slider .filter-slider::-moz-range-thumb{width:16px;height:16px}.filter-format-select{width:100%;padding:10px 36px 10px 14px;border:1px solid var(--border);border-radius:10px;background:var(--bg-white);color:var(--dark);font-size:.9rem;font-weight:500;outline:none;cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 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var(--border);border-radius:var(--radius-lg);padding:80px 24px;text-align:center;cursor:pointer;transition:var(--transition);background:var(--card-bg);display:flex;align-items:center;justify-content:center;height:100%;box-sizing:border-box}.filter-upload-zone:hover,.filter-upload-zone.dragover{border-color:var(--primary);background:var(--primary-light)}.filter-upload-content{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.filter-upload-title{font-size:1.1rem;font-weight:600;color:var(--dark);margin:0 0 8px}.filter-upload-sub{font-size:.9rem;color:var(--text-muted);margin:0 0 24px}.filter-upload-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border:1.5px solid var(--border);border-radius:var(--radius-md);background:var(--bg-white);color:var(--dark);font-size:.95rem;font-weight:600;cursor:pointer;transition:var(--transition)}.filter-upload-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}.filter-preview-area{background:var(--card-bg);border-radius:var(--radius-lg);box-shadow:var(--shadow);border:1px solid var(--border);overflow:hidden;display:flex;flex-direction:column;height:100%}.filter-canvas-toolbar{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;gap:4px;border-bottom:1px solid var(--border);background:var(--card-bg)}.filter-toolbar-left{display:flex;align-items:center;gap:6px}.filter-toolbar-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--border);border-radius:8px;background:var(--bg-white);color:var(--text-muted);cursor:pointer;transition:var(--transition)}.filter-toolbar-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}.filter-toolbar-btn:active{transform:scale(.95)}.filter-toolbar-btn.danger:hover{border-color:#ef4444;color:#ef4444;background:#fef2f2}.filter-toolbar-divider{width:1px;height:20px;background:var(--border);margin:0 4px}.filter-compare-label{font-size:.82rem;font-weight:600;color:var(--text-muted);display:flex;align-items:center;gap:6px}.filter-compare-label svg{color:var(--primary)}.filter-canvas-container{position:relative;display:flex;justify-content:center;align-items:center;background:repeating-conic-gradient(#f0f0f0 0% 25%,#fff 0% 50%) 50% / 20px 20px;flex:1;overflow:hidden;min-height:400px;user-select:none;-webkit-user-select:none}[data-theme=dark] .filter-canvas-container{background:repeating-conic-gradient(#333 0% 25%,#222 0% 50%) 50% / 20px 20px}.filter-canvas-wrapper{position:relative;display:inline-block;line-height:0}.filter-canvas-wrapper canvas{display:block;max-width:100%;max-height:500px;box-shadow:0 4px 20px #0000001a}.filter-canvas-info{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;border-top:1px solid var(--border);font-size:.8rem;color:var(--text-muted);background:var(--card-bg)}.filter-canvas-info-left{display:flex;align-items:center;gap:12px}.filter-info-hint{display:flex;align-items:center;gap:4px;font-size:.78rem}.filter-info-hint svg{color:var(--text-muted);opacity:.6}.filter-btn-reset{display:flex;align-items:center;gap:6px;padding:8px 16px;border:1px solid var(--border);border-radius:8px;background:var(--bg-white);color:var(--text-muted);font-size:.82rem;font-weight:600;cursor:pointer;transition:var(--transition);margin-bottom:4px}.filter-btn-reset:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}@media(max-width:1024px){.filter-app{max-width:100%;gap:16px;padding:20px 16px 48px}.filter-settings{width:300px;min-width:260px}}@media(max-width:860px){.filter-app{flex-direction:column;padding:16px 12px 48px;align-items:stretch}.filter-settings{width:100%;min-width:0;position:static;order:2}.filter-main-area{order:1;min-height:220px}.filter-upload-zone,.filter-preview-area{height:auto;min-height:200px}}@media(max-width:640px){.filter-app{padding:12px 10px 40px;gap:12px}.filter-panel{padding:14px;border-radius:var(--radius-md)}.filter-preset-grid{grid-template-columns:repeat(4,1fr);gap:6px}.filter-preset-item{padding:8px 3px;font-size:.68rem;gap:4px}.filter-preset-dot{width:22px;height:22px}.filter-row-sliders{gap:10px}.filter-upload-zone{padding:28px 16px;min-height:200px}.filter-upload-title{font-size:.95rem}.filter-canvas-toolbar{padding:8px 12px;flex-wrap:wrap;gap:8px}.filter-toolbar-btn{width:32px;height:32px}.filter-canvas-container{min-height:300px;padding:8px}.filter-canvas-wrapper canvas{max-height:350px}.filter-canvas-info{flex-direction:column;gap:8px;text-align:center}.filter-canvas-info-left{flex-wrap:wrap;justify-content:center;gap:8px}}.filter-hero{background:linear-gradient(to bottom,var(--bg-white) 0%,var(--bg-gray) 100%);border-bottom:1px solid var(--border);padding:60px 20px 48px;text-align:center}.filter-hero .hero-title{font-size:2.2rem;font-weight:800;color:var(--dark);margin:0 0 12px;line-height:1.3}.filter-hero .hero-title span{color:var(--primary)}.filter-hero .hero-desc{font-size:1.15rem;color:var(--text-main);margin:0 0 8px}.filter-hero .hero-desc strong{color:var(--dark)}.filter-hero .hero-sub{font-size:.95rem;color:var(--text-muted);margin:0 0 40px}.filter-info{background:var(--bg-gray);border-top:1px solid var(--border);padding:60px 20px 80px}.filter-info .container{max-width:1200px;margin:0 auto}.filter-faq-section{max-width:800px;margin:0 auto}.filter-faq-title{font-size:1.5rem;font-weight:800;color:var(--dark);text-align:center;margin:0 0 32px}.filter-faq-item{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-md);margin-bottom:12px;overflow:hidden;transition:border-color .2s}.filter-faq-item:hover{border-color:var(--primary)}.filter-faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 20px;border:none;background:transparent;cursor:pointer;text-align:left;font-size:.95rem;font-weight:600;color:var(--dark);line-height:1.5;transition:color .2s}.filter-faq-question:hover{color:var(--primary)}.filter-faq-arrow{flex-shrink:0;color:var(--text-muted);transition:transform .3s ease}.filter-faq-item.open .filter-faq-arrow{transform:rotate(180deg);color:var(--primary)}.filter-faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease}.filter-faq-item.open .filter-faq-answer{max-height:300px}.filter-faq-answer p{padding:0 20px 18px;font-size:.9rem;color:var(--text-muted);line-height:1.7;margin:0}@media(max-width:640px){.filter-hero{padding:40px 16px 32px}.filter-hero .hero-title{font-size:1.5rem}.filter-hero .hero-desc{font-size:1rem}.filter-info{padding:40px 16px 60px}.filter-faq-title{font-size:1.25rem}.filter-faq-question{padding:14px 16px;font-size:.9rem}.filter-faq-answer p{padding:0 16px 14px;font-size:.85rem}}