*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--color-primary: #4f46e5;--color-primary-hover: #4338ca;--color-primary-light: #eef2ff;--color-secondary: #0ea5e9;--color-accent: #f59e0b;--color-bg: #ffffff;--color-bg-alt: #f8fafc;--color-bg-dark: #0b1120;--color-text: #0f172a;--color-text-secondary: #475569;--color-text-light: #94a3b8;--color-text-on-dark: #f1f5f9;--color-border: #e2e8f0;--color-border-focus: #4f46e5;--color-success: #16a34a;--color-danger: #dc2626;--color-header-bg: rgba(255, 255, 255, .85);--color-sidebar-bg: #ffffff;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .08), 0 2px 4px -2px rgba(0, 0, 0, .05);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -4px rgba(0, 0, 0, .04);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .08), 0 8px 10px -6px rgba(0, 0, 0, .04);--shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, .25);--radius-sm: 6px;--radius: 10px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 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0, .5), 0 8px 10px -6px rgba(0, 0, 0, .4);--shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, .6);color-scheme:dark}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--color-primary: #818cf8;--color-primary-hover: #6366f1;--color-primary-light: #1e1b4b;--color-secondary: #38bdf8;--color-accent: #fbbf24;--color-bg: #0b1120;--color-bg-alt: #131c31;--color-bg-dark: #060a12;--color-text: #e8edf5;--color-text-secondary: #8899b0;--color-text-light: #5a6b82;--color-text-on-dark: #e8edf5;--color-border: #1e2a44;--color-border-focus: #818cf8;--color-sidebar-bg: #0b1120;--color-header-bg: rgba(11, 17, 32, .92);--color-success: #4ade80;--color-danger: #f87171;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .5), 0 2px 4px -2px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .5), 0 4px 6px -4px rgba(0, 0, 0, .4);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .5), 0 8px 10px -6px rgba(0, 0, 0, .4);--shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 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32px;font-size:1.0625rem;border-radius:var(--radius-md)}.btn-icon{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;padding:0;border-radius:var(--radius-sm);background:transparent;border:1px solid var(--color-border);color:var(--color-text-secondary);transition:all var(--transition)}.btn-icon:hover{background:var(--color-bg-alt);color:var(--color-text);border-color:var(--color-text-light)}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}.section{padding:80px 0}.section-title{font-size:2.25rem;font-weight:800;letter-spacing:-.025em;line-height:1.2;text-align:center;margin-bottom:16px}.section-subtitle{font-size:1.125rem;color:var(--color-text-secondary);text-align:center;max-width:600px;margin:0 auto 48px;line-height:1.7}.contact-page{max-width:640px;margin:0 auto;padding:48px 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var(--transition);outline:none}.contact-input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.contact-select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:16px;padding-right:36px}.contact-textarea{resize:vertical;min-height:120px;line-height:1.6}.contact-submit{align-self:flex-start;min-width:180px}.contact-success{display:flex;align-items:center;gap:10px;padding:14px 18px;border-radius:var(--radius-sm);background:#f0fdf4;color:#166534;font-size:.9375rem;border:1px solid #bbf7d0}[data-theme=dark] .contact-success{background:#052e16;color:#86efac;border-color:#166534}@media (prefers-color-scheme: dark){:root:not([data-theme=light]) .contact-success{background:#052e16;color:#86efac;border-color:#166534}}.contact-success svg{width:20px;height:20px;flex-shrink:0}.tools-page{max-width:1100px;margin:0 auto;padding:48px 24px}.tools-header{margin-bottom:24px}.tools-title{font-size:2rem;font-weight:700;color:var(--color-text);margin:0 0 8px;line-height:1.2}.tools-subtitle{font-size:1rem;color:var(--color-text-secondary);margin:0;line-height:1.6}.tools-search{position:relative;margin-bottom:32px;max-width:400px}.tools-search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--color-text-light);pointer-events:none}.tools-search-input{width:100%;padding:12px 16px 12px 42px;font-size:.9375rem;font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius);outline:none;transition:border-color var(--transition),box-shadow var(--transition)}.tools-search-input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.tools-search-input::placeholder{color:var(--color-text-light)}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}.tool-card{display:flex;flex-direction:column;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:28px;transition:box-shadow var(--transition),border-color var(--transition)}.tool-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md)}.tool-card-icon{flex-shrink:0;width:48px;height:48px;border-radius:var(--radius);background:var(--color-primary-light);display:flex;align-items:center;justify-content:center;color:var(--color-primary);margin-bottom:16px}.tool-card-icon svg{width:24px;height:24px}.tool-card-body{flex:1;display:flex;flex-direction:column}.tool-card-title{font-size:1.25rem;font-weight:700;color:var(--color-text);margin:0 0 8px;line-height:1.3}.tool-card-desc{font-size:.9375rem;color:var(--color-text-secondary);margin:0 0 16px;line-height:1.6}.tool-card-features{list-style:none;padding:0;margin:0 0 20px;display:flex;flex-wrap:wrap;gap:8px}.tool-card-features li{font-size:.8125rem;color:var(--color-text-secondary);background:var(--color-bg-alt);padding:4px 12px;border-radius:20px;line-height:1.5}.tool-card-btn{align-self:flex-start;margin-top:auto}.compressor-page{max-width:720px;margin:0 auto;padding:48px 24px}.compressor-back{display:inline-flex;align-items:center;gap:6px;background:none;border:none;color:var(--color-text-secondary);cursor:pointer;font-size:.875rem;padding:0;margin-bottom:24px;transition:color var(--transition)}.compressor-back:hover{color:var(--color-primary)}.compressor-title{font-size:2rem;font-weight:700;color:var(--color-text);margin:0 0 8px;line-height:1.2}.compressor-subtitle{font-size:1rem;color:var(--color-text-secondary);margin:0 0 32px;line-height:1.6}.compressor-dropzone{border:2px dashed var(--color-border);border-radius:var(--radius-lg);padding:48px 24px;text-align:center;cursor:pointer;transition:border-color var(--transition),background var(--transition);background:var(--color-bg);color:var(--color-text-secondary)}.compressor-dropzone:hover,.compressor-dropzone--over{border-color:var(--color-primary);background:var(--color-primary-light);color:var(--color-primary)}.compressor-drop-text{font-size:1.0625rem;margin:16px 0 4px;color:inherit}.compressor-drop-link{color:var(--color-primary);text-decoration:underline;font-weight:600}.compressor-drop-hint{font-size:.8125rem;color:var(--color-text-secondary);margin:0}.compressor-files{margin-top:28px}.compressor-files-header,.compressor-results-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.compressor-files-title,.compressor-results-title{font-size:1.125rem;font-weight:700;color:var(--color-text);margin:0}.compressor-file-item,.compressor-result-item{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-sm);margin-bottom:8px}.compressor-file-icon{flex-shrink:0;width:32px;height:32px;color:var(--color-primary)}.compressor-file-icon svg{width:100%;height:100%}.compressor-file-info,.compressor-result-info{flex:1;min-width:0}.compressor-file-name{display:block;font-size:.875rem;font-weight:600;color:var(--color-text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.compressor-file-meta{display:block;font-size:.75rem;color:var(--color-text-light);margin-top:2px}.compressor-file-remove{flex-shrink:0;font-size:1.25rem;line-height:1;padding:4px;color:var(--color-text-light);border:none;background:none;cursor:pointer;border-radius:4px;transition:color var(--transition)}.compressor-file-remove:hover{color:var(--color-danger)}.compressor-actions{display:flex;gap:12px;margin-top:16px}.compressor-progress{margin-top:20px;display:flex;align-items:center;gap:12px}.compressor-progress-bar-wrap{flex:1;height:8px;background:var(--color-border);border-radius:4px;overflow:hidden}.compressor-progress-bar{height:100%;width:0;background:var(--color-primary);border-radius:4px;transition:width .3s ease}.compressor-progress-text{font-size:.8125rem;color:var(--color-text-secondary);white-space:nowrap}.compressor-results{margin-top:28px}.compressor-results-summary{display:flex;gap:16px;align-items:center;font-size:.875rem;color:var(--color-text-secondary)}.compressor-summary-savings{font-weight:700;color:var(--color-success)}.compressor-result-badge{flex-shrink:0;font-size:.8125rem;font-weight:700;padding:4px 10px;border-radius:12px}.compressor-result-badge--good{color:#fff;background:var(--color-success)}.compressor-result-badge--none{color:var(--color-text-secondary);background:var(--color-bg-alt)}.compressor-result-item--error{opacity:.6}.compressor-result-bad{font-size:.8125rem;color:var(--color-danger);font-weight:600}.compressor-toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%) translateY(80px);background:var(--color-text);color:var(--color-bg);padding:12px 24px;border-radius:var(--radius-sm);font-size:.875rem;opacity:0;transition:opacity .3s ease,transform .3s ease;z-index:200;pointer-events:none}.compressor-toast.show{opacity:1;transform:translate(-50%) translateY(0)}.compressor-toast.error{background:var(--color-danger);color:#fff}.compressor-result-item--selectable{padding-left:8px;gap:8px}.compressor-check-wrap{display:flex;align-items:center;cursor:pointer;position:relative}.compressor-check-wrap input[type=checkbox]{width:18px;height:18px;accent-color:var(--color-primary);cursor:pointer}.compressor-check-all{display:flex;align-items:center;gap:6px;font-size:.8125rem;color:var(--color-text-secondary);cursor:pointer;user-select:none}.compressor-check-all input[type=checkbox]{width:16px;height:16px;accent-color:var(--color-primary);cursor:pointer}.converter-page{max-width:700px;margin:0 auto;padding:48px 24px}.converter-back{display:inline-flex;align-items:center;gap:6px;background:none;border:none;color:var(--color-text-secondary);cursor:pointer;font-size:.875rem;padding:0;margin-bottom:24px;transition:color var(--transition)}.converter-back:hover{color:var(--color-primary)}.converter-title{font-size:2rem;font-weight:700;color:var(--color-text);margin:0 0 8px;line-height:1.2}.converter-subtitle{font-size:1rem;color:var(--color-text-secondary);margin:0 0 32px;line-height:1.6}.converter-dropzone{border:2px dashed var(--color-border);border-radius:var(--radius-lg);padding:48px 24px;text-align:center;cursor:pointer;transition:border-color var(--transition),background var(--transition);background:var(--color-bg);color:var(--color-text-secondary)}.converter-dropzone:hover,.converter-dropzone--over{border-color:var(--color-primary);background:var(--color-primary-light);color:var(--color-primary)}.converter-drop-text{font-size:1.0625rem;margin:16px 0 4px;color:inherit}.converter-drop-link{color:var(--color-primary);text-decoration:underline;font-weight:600}.converter-drop-hint{font-size:.8125rem;color:var(--color-text-secondary);margin:0}.converter-file-info{margin-top:24px}.converter-file-card{display:flex;align-items:center;gap:14px;padding:16px 20px;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius)}.converter-file-icon{flex-shrink:0;width:36px;height:36px;color:var(--color-primary)}.converter-file-icon svg{width:100%;height:100%}.converter-file-details{flex:1;min-width:0}.converter-file-name{display:block;font-size:.9375rem;font-weight:600;color:var(--color-text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.converter-file-meta{display:block;font-size:.8125rem;color:var(--color-text-light);margin-top:2px}.converter-options{margin-top:28px}.converter-options-title{font-size:1.125rem;font-weight:700;color:var(--color-text);margin:0 0 16px}.converter-format-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px}.converter-format-card{display:flex;flex-direction:column;align-items:center;gap:8px;padding:20px 12px;border:2px solid var(--color-border);border-radius:var(--radius);cursor:pointer;transition:border-color var(--transition),background var(--transition);background:var(--color-bg);user-select:none}.converter-format-card:hover{border-color:var(--color-primary-light)}.converter-format-card--selected{border-color:var(--color-primary);background:var(--color-primary-light)}.converter-format-icon{width:32px;height:32px;color:var(--color-primary)}.converter-format-icon svg{width:100%;height:100%}.converter-format-label{font-size:.875rem;font-weight:600;color:var(--color-text)}.converter-actions{display:flex;gap:12px;margin-top:20px}.converter-progress{margin-top:20px;display:flex;align-items:center;gap:12px}.converter-progress-bar-wrap{flex:1;height:8px;background:var(--color-border);border-radius:4px;overflow:hidden}.converter-progress-bar{height:100%;width:0;background:var(--color-primary);border-radius:4px;transition:width .3s ease}.converter-progress-text{font-size:.8125rem;color:var(--color-text-secondary);white-space:nowrap}.converter-result{margin-top:28px}.converter-result-title{font-size:1.125rem;font-weight:700;color:var(--color-text);margin:0 0 16px}.converter-result-card{display:flex;align-items:center;gap:14px;padding:16px 20px;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius)}.converter-toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%) translateY(80px);background:var(--color-text);color:var(--color-bg);padding:12px 24px;border-radius:var(--radius-sm);font-size:.875rem;opacity:0;transition:opacity .3s ease,transform .3s ease;z-index:200;pointer-events:none}.converter-toast.show{opacity:1;transform:translate(-50%) translateY(0)}.converter-toast.error{background:var(--color-danger);color:#fff}