:root{--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--bg-tertiary: #f1f3f4;--text-primary: #1d1d1d;--text-secondary: #5f6368;--text-muted: #9aa0a6;--border-color: #dadce0;--border-light: #e8eaed;--accent-primary: #FF8B8B;--accent-secondary: #FF6B6B;--accent-glow: rgba(255, 139, 139, .15);--accent-rgb: 255, 139, 139;--error: #FF8B8B;--error-bg: rgba(255, 139, 139, .1);--warning: #FFD93D;--warning-bg: rgba(255, 217, 61, .1);--success: #88D8B0;--success-bg: rgba(136, 216, 176, .1);--info: #87CEEB;--info-bg: rgba(135, 206, 235, .1);--font-display: "Space Grotesk", sans-serif;--font-mono: "JetBrains Mono", monospace;--container-max-width: 720px;--container-padding: 3rem 1.5rem;--section-gap: 1.5rem;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-medium: .3s cubic-bezier(.4, 0, .2, 1);--transition-slow: .5s cubic-bezier(.4, 0, .2, 1);--stack-gap: 1.5rem;--grid-gap: 1rem;--cluster-gap: .75rem;--sidebar-width: 280px}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-display);background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6;position:relative;overflow-x:hidden}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background-color:var(--bg-primary);background-image:repeating-linear-gradient(0deg,transparent,transparent 19px,rgba(var(--accent-rgb),.15) 19px,rgba(var(--accent-rgb),.15) 20px),repeating-linear-gradient(90deg,transparent,transparent 19px,rgba(var(--accent-rgb),.15) 19px,rgba(var(--accent-rgb),.15) 20px),repeating-linear-gradient(0deg,transparent,transparent 9px,rgba(var(--accent-rgb),.08) 9px,rgba(var(--accent-rgb),.08) 10px),repeating-linear-gradient(90deg,transparent,transparent 9px,rgba(var(--accent-rgb),.08) 9px,rgba(var(--accent-rgb),.08) 10px);background-size:40px 40px;opacity:.8;pointer-events:none;z-index:0}.l-container{position:relative;z-index:2;max-width:var(--container-max-width);margin:0 auto;padding:var(--container-padding);min-height:100vh;display:flex;flex-direction:column}.l-container--narrow{--container-max-width: 680px}.l-container--wide{--container-max-width: 1200px}.l-container--full{--container-max-width: 100%}.l-stack{display:flex;flex-direction:column;gap:var(--stack-gap)}.l-stack--tight{--stack-gap: .75rem}.l-stack--loose{--stack-gap: 2rem}.l-stack--extra-loose{--stack-gap: 3rem}.l-grid{display:grid;gap:var(--grid-gap)}.l-grid--2col{grid-template-columns:repeat(2,1fr)}.l-grid--3col{grid-template-columns:repeat(3,1fr)}.l-grid--4col{grid-template-columns:repeat(4,1fr)}.l-grid--sidebar{grid-template-columns:1fr var(--sidebar-width)}.l-grid--sidebar-reverse{grid-template-columns:var(--sidebar-width) 1fr}.l-grid--golden{grid-template-columns:1.618fr 1fr}.l-grid--golden-reverse{grid-template-columns:1fr 1.618fr}.l-cluster{display:flex;flex-wrap:wrap;gap:var(--cluster-gap);align-items:center}.l-cluster--between{justify-content:space-between}.l-cluster--center{justify-content:center}.l-center{display:flex;align-items:center;justify-content:center}.l-center--axis-x{display:flex;justify-content:center}.l-center--axis-y{display:flex;align-items:center}.l-with-sidebar{display:grid;grid-template-columns:1fr var(--sidebar-width);gap:2rem}.l-with-sidebar--left{grid-template-columns:var(--sidebar-width) 1fr}@media (max-width: 768px){.l-grid--2col,.l-grid--3col,.l-grid--4col,.l-grid--sidebar,.l-grid--sidebar-reverse,.l-grid--golden,.l-grid--golden-reverse,.l-with-sidebar,.l-with-sidebar--left{grid-template-columns:1fr}.l-container{padding:2rem 1rem}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-4px)}40%{transform:translate(4px)}60%{transform:translate(-4px)}80%{transform:translate(4px)}}:root{--accent-primary: #88D8B0;--accent-secondary: #6BC4A6;--accent-glow: rgba(136, 216, 176, .2);--accent-rgb: 136, 216, 176;--grid-line: rgba(136, 216, 176, .25);--error-bg: rgba(255, 139, 139, .1);--success-bg: rgba(136, 216, 176, .1);--info: #87CEEB;--info-bg: rgba(135, 206, 235, .1);--space-2xl: 3rem}.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-secondary);margin-bottom:var(--space-lg);padding:.5rem 1rem;background:var(--bg-primary);border:1px solid var(--grid-line);border-radius:var(--radius-sm)}.header-badge a{color:var(--accent-primary);text-decoration:none;transition:opacity .2s ease}.header-badge a:hover{opacity:.8;text-decoration:underline}.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);color:var(--text-primary)}.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);border:2px dashed var(--grid-line);border-radius:var(--radius-md);cursor:pointer;transition:all .2s ease}.upload-zone:hover{background:var(--bg-tertiary);border-color:var(--accent-primary)}.upload-zone--dragover{background:var(--success-bg);border-color:var(--accent-primary);border-style:solid}.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:var(--bg-primary);border:1px solid var(--grid-line);border-radius:var(--radius-sm);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-primary);border:1px solid var(--grid-line);border-radius:var(--radius-md);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-secondary)}.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-secondary);margin-bottom:var(--space-sm)}.config-select{width:100%;padding:var(--space-md);background:var(--bg-secondary);border:1px solid var(--grid-line);border-radius:var(--radius-sm);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='%2388D8B0' 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-secondary);border:1px solid var(--grid-line);border-radius:var(--radius-sm);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;border-radius:var(--radius-md);color:var(--bg-primary);font-family:var(--font-display);font-size:1rem;font-weight:600;cursor:pointer;overflow:hidden;transition:all .2s ease;box-shadow:0 2px #0000001a}.split-button:hover:not(:disabled){background:var(--accent-secondary);transform:translateY(-1px);box-shadow:0 4px 12px var(--accent-glow)}.split-button:disabled{background:var(--bg-tertiary);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:#ffffff4d;transition:width .1s linear;z-index:1}.status{display:none;padding:var(--space-md) var(--space-lg);background:var(--bg-primary);border:1px solid var(--grid-line);border-radius:var(--radius-md);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='%23FF8B8B' 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='%2388D8B0' 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='%2387CEEB' 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-primary);border:1px solid var(--grid-line);border-radius:var(--radius-md);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-secondary)}.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-secondary);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:2px solid var(--accent-primary);border-radius:var(--radius-md);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);padding:var(--space-md);background:var(--bg-secondary);border:1px solid var(--grid-line);border-radius:var(--radius-sm)}.footer-label{font-family:var(--font-mono);font-size:.6875rem;color:var(--accent-primary);font-weight:600}.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)}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--grid-line);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}::selection{background:var(--accent-primary);color:var(--bg-primary)}