:root{--bg-primary: #0a0a0b;--bg-secondary: #111113;--bg-tertiary: #1a1a1d;--bg-elevated: #232326;--grid-color: rgba(74, 222, 128, .08);--grid-accent: rgba(74, 222, 128, .15);--grid-line: rgba(74, 222, 128, .2);--accent-primary: #4ade80;--accent-secondary: #22c55e;--accent-dim: rgba(74, 222, 128, .6);--text-primary: #f0fdf4;--text-secondary: rgba(240, 253, 244, .7);--text-tertiary: rgba(240, 253, 244, .5);--text-muted: rgba(240, 253, 244, .35);--error: #ef4444;--error-bg: rgba(239, 68, 68, .1);--success: #4ade80;--success-bg: rgba(74, 222, 128, .1);--info: #3b82f6;--info-bg: rgba(59, 130, 246, .1);--font-display: "Space Grotesk", sans-serif;--font-mono: "DM Mono", monospace;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--border-width: 1px;--radius-sm: 2px;--radius-md: 4px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px}body{font-family:var(--font-display);background:var(--bg-primary);color:var(--text-primary);line-height:1.5;min-height:100vh;position:relative;overflow-x:hidden}.grid-overlay{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;background-image:linear-gradient(var(--grid-color) 1px,transparent 1px),linear-gradient(90deg,var(--grid-color) 1px,transparent 1px);background-size:40px 40px;-webkit-mask-image:radial-gradient(ellipse at center,rgba(0,0,0,1) 0%,rgba(0,0,0,.5) 50%,transparent 80%);mask-image:radial-gradient(ellipse at center,rgba(0,0,0,1) 0%,rgba(0,0,0,.5) 50%,transparent 80%);z-index:0}.container{position:relative;z-index:1;max-width:680px;margin:0 auto;padding:var(--space-xl) var(--space-lg);min-height:100vh;display:flex;flex-direction:column}.header{margin-bottom:var(--space-2xl)}.header-badge{display:inline-flex;align-items:center;gap:var(--space-sm);font-family:var(--font-mono);font-size:.75rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--text-tertiary);margin-bottom:var(--space-lg)}.header-badge a{color:var(--text-tertiary);text-decoration:none;transition:color .2s ease}.header-badge a:hover{color:var(--accent-primary)}.badge-dot{width:6px;height:6px;background:var(--accent-primary);border-radius:50%;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.title{font-size:clamp(2.5rem,8vw,3.5rem);font-weight:700;line-height:1;letter-spacing:-.03em;margin-bottom:var(--space-md)}.title-line{display:block}.title-line--accent{color:var(--accent-primary)}.subtitle{font-size:1rem;color:var(--text-secondary);max-width:480px;line-height:1.6}.main{flex:1;display:flex;flex-direction:column;gap:var(--space-xl)}.upload-zone{position:relative;padding:var(--space-2xl);background:var(--bg-secondary);cursor:pointer;transition:all .2s ease}.upload-zone__grid{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.grid-line{position:absolute;background:var(--grid-line);transition:all .3s ease}.grid-line--h{width:calc(100% - 20px);height:1px;left:10px}.grid-line--v{width:1px;height:calc(100% - 20px);top:10px}.grid-line--top{top:10px}.grid-line--bottom{bottom:10px}.grid-line--left{left:10px}.grid-line--right{right:10px}.grid-node{position:absolute;width:5px;height:5px;background:var(--grid-line);transition:all .3s ease}.grid-node--tl{top:8px;left:8px}.grid-node--tr{top:8px;right:8px}.grid-node--bl{bottom:8px;left:8px}.grid-node--br{bottom:8px;right:8px}.upload-zone:hover{background:var(--bg-tertiary)}.upload-zone:hover .grid-line{background:var(--accent-dim)}.upload-zone:hover .grid-node{background:var(--accent-primary);box-shadow:0 0 8px var(--accent-primary)}.upload-zone--dragover{background:var(--bg-elevated)}.upload-zone--dragover .grid-line{background:var(--accent-primary)}.upload-zone--dragover .grid-node{background:var(--accent-primary);box-shadow:0 0 12px var(--accent-primary)}.upload-input{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer;z-index:2}.upload-content{display:flex;flex-direction:column;align-items:center;text-align:center;gap:var(--space-md);position:relative;z-index:1}.upload-zone.has-file .upload-content{display:none}.upload-icon{width:48px;height:48px;color:var(--accent-primary);opacity:.8}.upload-icon svg{width:100%;height:100%}.upload-text{display:flex;flex-direction:column;gap:var(--space-xs)}.upload-text--primary{font-size:1.125rem;font-weight:500;color:var(--text-primary)}.upload-text--secondary{font-size:.875rem;color:var(--text-tertiary)}.upload-hint{font-family:var(--font-mono);font-size:.75rem;color:var(--text-muted);margin-top:var(--space-sm)}.file-info{display:none;align-items:center;gap:var(--space-md);position:relative;z-index:1}.upload-zone.has-file .file-info{display:flex}.file-icon{width:40px;height:40px;color:var(--accent-primary);flex-shrink:0}.file-icon svg{width:100%;height:100%}.file-details{flex:1;min-width:0}.file-name{font-family:var(--font-mono);font-size:.9375rem;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-meta{font-family:var(--font-mono);font-size:.75rem;color:var(--text-tertiary);margin-top:2px}.file-meta__divider{margin:0 var(--space-sm);color:var(--text-muted)}.file-remove{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--grid-line);color:var(--text-tertiary);cursor:pointer;transition:all .2s ease;z-index:3}.file-remove:hover{border-color:var(--error);color:var(--error);background:var(--error-bg)}.file-remove svg{width:16px;height:16px}.config-panel{display:none;background:var(--bg-secondary);border:1px solid var(--grid-line);padding:var(--space-lg)}.config-panel--visible{display:block;animation:slideDown .3s ease}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.config-panel__header{display:flex;align-items:center;gap:var(--space-sm);margin-bottom:var(--space-lg);padding-bottom:var(--space-md);border-bottom:1px solid var(--grid-line)}.config-panel__icon{font-family:var(--font-mono);font-size:.875rem;color:var(--accent-primary)}.config-panel__title{font-family:var(--font-mono);font-size:.75rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--text-tertiary)}.config-mode{margin-bottom:var(--space-lg)}.config-label{display:block;font-family:var(--font-mono);font-size:.6875rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--text-tertiary);margin-bottom:var(--space-sm)}.config-select{width:100%;padding:var(--space-md);background:var(--bg-tertiary);border:1px solid var(--grid-line);color:var(--text-primary);font-family:var(--font-display);font-size:.9375rem;cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%234ade80' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right var(--space-md) center;padding-right:var(--space-xl);transition:border-color .2s ease}.config-select:focus{outline:none;border-color:var(--accent-primary)}.config-option{display:none}.config-option--active{display:block;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.config-input-wrap{position:relative;display:flex;align-items:center}.config-input{width:100%;padding:var(--space-md);padding-right:70px;background:var(--bg-tertiary);border:1px solid var(--grid-line);color:var(--text-primary);font-family:var(--font-mono);font-size:1rem;transition:border-color .2s ease}.config-input:focus{outline:none;border-color:var(--accent-primary)}.config-input::placeholder{color:var(--text-muted)}.config-input::-webkit-outer-spin-button,.config-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.config-input[type=number]{-moz-appearance:textfield}.config-input__unit{position:absolute;right:var(--space-md);font-family:var(--font-mono);font-size:.75rem;color:var(--text-tertiary);pointer-events:none}.config-hint{font-size:.8125rem;color:var(--text-tertiary);margin-top:var(--space-sm);line-height:1.5}.split-button{position:relative;display:flex;align-items:center;justify-content:center;gap:var(--space-sm);width:100%;padding:var(--space-lg);background:var(--accent-primary);border:none;color:var(--bg-primary);font-family:var(--font-display);font-size:1rem;font-weight:600;cursor:pointer;overflow:hidden;transition:all .2s ease}.split-button:hover:not(:disabled){background:var(--accent-secondary);transform:translateY(-1px);box-shadow:0 4px 20px #4ade804d}.split-button:disabled{background:var(--bg-elevated);color:var(--text-muted);cursor:not-allowed}.split-button.processing{pointer-events:none}.split-button__text{position:relative;z-index:2}.split-button__icon{width:20px;height:20px;position:relative;z-index:2}.split-button__icon svg{width:100%;height:100%}.split-button__progress{position:absolute;bottom:0;left:0;height:3px;width:0;background:var(--bg-primary);opacity:.3;transition:width .1s linear;z-index:1}.status{display:none;padding:var(--space-md) var(--space-lg);background:var(--bg-secondary);border-left:3px solid transparent}.status--visible{display:block;animation:slideDown .2s ease}.status--error{background:var(--error-bg);border-left-color:var(--error)}.status--success{background:var(--success-bg);border-left-color:var(--success)}.status--info{background:var(--info-bg);border-left-color:var(--info)}.status-content{display:flex;align-items:center;gap:var(--space-md)}.status-icon{width:20px;height:20px;flex-shrink:0}.status--error .status-icon{background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ef4444' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cline x1='15' y1='9' x2='9' y2='15'%3E%3C/line%3E%3Cline x1='9' y1='9' x2='15' y2='15'%3E%3C/line%3E%3C/svg%3E") center/contain no-repeat}.status--success .status-icon{background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234ade80' stroke-width='2'%3E%3Cpath d='M22 11.08V12a10 10 0 1 1-5.93-9.14'%3E%3C/path%3E%3Cpolyline points='22 4 12 14.01 9 11.01'%3E%3C/polyline%3E%3C/svg%3E") center/contain no-repeat}.status--info .status-icon{background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233b82f6' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cline x1='12' y1='16' x2='12' y2='12'%3E%3C/line%3E%3Cline x1='12' y1='8' x2='12.01' y2='8'%3E%3C/line%3E%3C/svg%3E") center/contain no-repeat}.status-message{font-size:.9375rem;color:var(--text-primary);line-height:1.5}.result-panel{display:none;background:var(--bg-secondary);border:1px solid var(--grid-line);padding:var(--space-lg)}.result-panel--visible{display:block;animation:slideDown .3s ease}.result-panel__header{display:flex;align-items:center;gap:var(--space-sm);margin-bottom:var(--space-lg);padding-bottom:var(--space-md);border-bottom:1px solid var(--grid-line)}.result-panel__icon{font-family:var(--font-mono);font-size:.875rem;color:var(--accent-primary)}.result-panel__title{font-family:var(--font-mono);font-size:.75rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--text-tertiary)}.result-summary{display:flex;gap:var(--space-xl);margin-bottom:var(--space-lg)}.result-stat{display:flex;flex-direction:column;gap:var(--space-xs)}.result-stat__value{font-family:var(--font-mono);font-size:2rem;font-weight:500;color:var(--accent-primary);line-height:1}.result-stat__label{font-family:var(--font-mono);font-size:.6875rem;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.05em}.download-button{display:flex;align-items:center;justify-content:center;gap:var(--space-sm);width:100%;padding:var(--space-md);background:transparent;border:1px solid var(--accent-primary);color:var(--accent-primary);font-family:var(--font-display);font-size:.9375rem;font-weight:500;cursor:pointer;transition:all .2s ease}.download-button:hover{background:var(--accent-primary);color:var(--bg-primary)}.download-button__icon{width:18px;height:18px}.download-button__icon svg{width:100%;height:100%}.footer{margin-top:var(--space-2xl);padding-top:var(--space-xl);border-top:1px solid var(--grid-line)}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-md)}.footer-cell{display:flex;flex-direction:column;gap:var(--space-xs)}.footer-label{font-family:var(--font-mono);font-size:.6875rem;color:var(--accent-primary)}.footer-value{font-size:.8125rem;color:var(--text-secondary)}@media (max-width: 600px){.container{padding:var(--space-lg)}.upload-zone{padding:var(--space-xl)}.footer-grid{grid-template-columns:repeat(2,1fr);gap:var(--space-lg)}.result-summary{flex-direction:column;gap:var(--space-lg)}}