:root{--primary-color: #6366f1;--primary-hover: #4f46e5;--primary-light: #a5b4fc;--primary-dark: #4338ca;--secondary-color: #8b5cf6;--accent-color: #06b6d4;--success-color: #10b981;--warning-color: #f59e0b;--error-color: #ef4444;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-400: #9ca3af;--gray-500: #6b7280;--gray-600: #4b5563;--gray-700: #374151;--gray-800: #1f2937;--gray-900: #111827;--bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--panel: rgba(255,255,255,.98);--muted: var(--gray-600);--text: var(--gray-800);--accent: var(--primary-color);--accent-2: var(--primary-hover);--border: var(--gray-200);--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, 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label{font-size:13px;color:var(--gray-700);font-weight:600}.toolbar input[type=range]{width:100%}.toolbar .slider{width:100%;height:4px;border-radius:2px;background:var(--gray-200);outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.toolbar .slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary-color);box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -2px #0000001a}.toolbar .slider::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--primary-color);border:none;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -2px #0000001a}.control-section{margin-bottom:8px}.control-section h3{margin:0 0 4px;color:var(--gray-700);font-size:12px;font-weight:600}.upload-area{display:grid;place-items:center;gap:8px;padding:24px;border:2px dashed var(--gray-300);border-radius:16px;background:var(--gray-50);color:var(--gray-600);cursor:pointer;transition:all 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6px;font-size:16px;color:var(--gray-900)}.faq-a{margin:0;color:var(--gray-700);line-height:1.7}.qa-badge{display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--accent);color:#fff;font-weight:800;font-size:12px;margin-right:8px}.qa-badge.a{background:var(--success-color)}@media (max-width: 900px){.info-grid{grid-template-columns:1fr}}.mode-toggle{display:grid;grid-template-columns:1fr 1fr;width:100%;background:var(--gray-100);border:1px solid var(--gray-200);border-radius:12px;overflow:hidden;transition:border-color .2s}.mode-toggle:hover{border-color:var(--primary-light)}.mode-toggle button{padding:10px 12px;background:transparent;color:var(--gray-700);border:none;cursor:pointer;font-weight:600;font-size:14px;width:100%;transition:all .2s}.mode-toggle button:hover{background:var(--gray-50);color:var(--primary-color)}.mode-toggle button.active{background:var(--primary-color);color:#fff;box-shadow:var(--shadow-sm)}.mode-toggle 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.2s;box-shadow:var(--shadow-md)}.download-btn:hover{background:var(--primary-hover);box-shadow:var(--shadow-lg);transform:translateY(-1px)}.download-btn:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:var(--shadow-sm)}.hero{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;pointer-events:none;z-index:10}.hero .box{text-align:center;max-width:720px;padding:32px 36px;background:#fffffff2;border:1px solid var(--gray-200);border-radius:20px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;pointer-events:all}.hero h1{margin:0 0 12px;font-size:32px;letter-spacing:.3px;color:var(--gray-800);font-weight:800}.hero p{margin:8px 0;color:var(--gray-600)}.hero .lead{font-size:16px;color:var(--gray-600);margin-top:4px;font-weight:500}.hero .list{margin-top:16px;text-align:left;display:inline-block;color:var(--gray-600)}.hero .list .item{margin:8px 0;display:flex;align-items:center;font-size:14px;font-weight:500}.hero .badge{display:inline-block;min-width:50px;padding:4px 12px;margin-right:12px;border-radius:12px;background:var(--primary-color);color:#fff;text-align:center;font-weight:700;font-size:12px;letter-spacing:.5px}.drop-overlay{position:absolute;top:0;right:0;bottom:0;left:0;border:2px dashed var(--primary-color);border-radius:12px;display:grid;place-items:center;color:var(--primary-color);background:#6366f114;z-index:15;font-weight:600;transition:opacity .15s ease-in-out;pointer-events:none;font-size:16px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.drag-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:10;pointer-events:all;background:transparent}