:root{--color-brand: #1f1f1f;--color-brand-hover: #111111;--color-equal: #22c55e;--color-equal-row: rgba(34, 197, 94, .5);--color-diff: #ef4444;--color-diff-row: rgba(239, 68, 68, .5);--color-bg: #f8fafc;--color-surface: #ffffff;--color-border: #e2e8f0;--color-text: #0f172a;--color-text-muted: #64748b;--color-text-light: #94a3b8;--font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--border-radius-sm: .375rem;--border-radius-md: .5rem;--border-radius-lg: .75rem;--transition-fast: .15s ease;--transition-normal: .25s ease;--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 -2px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1);--header-height: 4.5rem}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{font-family:var(--font-family);background-color:var(--color-bg);color:var(--color-text);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{color:var(--color-text);line-height:1.35;margin-top:var(--spacing-md);margin-bottom:var(--spacing-xs)}h1:first-child,h2:first-child,h3:first-child,h4:first-child,h5:first-child,h6:first-child{margin-top:0}h1{font-size:2.25rem;font-weight:800;line-height:1.25;margin-top:var(--spacing-lg);margin-bottom:var(--spacing-sm)}h2{font-size:1.5rem;font-weight:700;line-height:1.3;margin-top:var(--spacing-lg);margin-bottom:var(--spacing-xs)}h3{font-size:1.35rem;font-weight:700;line-height:1.35;margin-top:var(--spacing-md);margin-bottom:var(--spacing-xs)}h4{font-size:1.05rem;font-weight:700;line-height:1.4;margin-top:var(--spacing-xs);margin-bottom:.25rem}.guide-article-block{margin-top:var(--spacing-lg)}.guide-article-block:first-of-type{margin-top:var(--spacing-md)}.app-container{display:flex;flex-direction:column;min-height:100vh}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}main{flex:1;padding:var(--spacing-xl) 0}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.text-light{color:var(--color-text-light)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.wrap{flex-wrap:wrap}.site-header{min-height:var(--header-height);height:auto;background-color:var(--color-surface);border-bottom:1px solid var(--color-border);display:flex;align-items:center;position:sticky;top:0;z-index:100;padding:.4rem 0}.header-container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--spacing-sm)}.logo-container{display:flex;align-items:center;gap:var(--spacing-sm);text-decoration:none;color:var(--color-text);font-weight:700;font-size:1.25rem;flex-shrink:0;position:relative}.logo-container.active:after{content:"";position:absolute;bottom:-4px;left:0;right:0;height:2px;background-color:var(--color-text);border-radius:1px}.header-nav{display:flex;gap:var(--spacing-md);align-items:center;font-size:.9375rem;font-weight:500}.header-nav a{color:var(--color-text-muted);text-decoration:none;transition:color var(--transition-fast)}.header-nav a:hover{color:var(--color-text)}.header-nav a.active{color:var(--color-text);font-weight:700;text-decoration:underline;text-underline-offset:4px}.header-actions{display:flex;gap:var(--spacing-sm);align-items:center;flex-shrink:0}@media (max-width: 768px){.site-header{padding:.35rem 0}.header-container{justify-content:space-between;align-items:center;gap:.25rem}.logo-container{font-size:1.1rem;gap:.35rem}.logo-container img{width:1.85rem!important;height:1.85rem!important}.header-actions{gap:.25rem;margin-left:auto}.header-actions .btn-coffee{padding:.25rem .45rem!important;font-size:.75rem!important;white-space:nowrap}#lang-select-header{height:28px!important;font-size:.75rem!important;padding:.15rem 1.3rem .15rem .35rem!important}.header-nav{order:3;width:100%;justify-content:center;margin-top:.25rem;padding-top:.35rem;border-top:1px solid var(--color-border);font-size:.85rem;gap:var(--spacing-md)}}@media (max-width: 420px){.logo-container span{font-size:1rem}.header-actions .btn-coffee{padding:.2rem .35rem!important;font-size:.725rem!important}#lang-select-header{font-size:.725rem!important;padding:.15rem 1.1rem .15rem .25rem!important}.header-nav{gap:var(--spacing-sm);font-size:.8rem}}.logo-placeholder{display:flex;align-items:center;gap:var(--spacing-sm);text-decoration:none;color:var(--color-text);font-weight:700;font-size:1.25rem}.logo-placeholder{width:2.25rem;height:2.25rem;background-color:var(--color-brand);border-radius:var(--border-radius-sm);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.15rem;font-weight:700}footer{background-color:var(--color-surface);border-top:1px solid var(--color-border);padding:var(--spacing-lg) 0;text-align:center;font-size:.875rem;color:var(--color-text-muted)}footer .container{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md)}.footer-links{display:flex;gap:var(--spacing-md);list-style:none}.footer-links a{color:var(--color-text-muted);text-decoration:none;transition:color var(--transition-fast)}.footer-links a:hover{color:var(--color-brand)}.footer-links a.active{color:var(--color-text);font-weight:700;text-decoration:underline;text-underline-offset:4px}@media (max-width: 768px){.footer-content{flex-direction:column;justify-content:center!important;text-align:center;gap:var(--spacing-sm)!important}.footer-links{justify-content:center!important;flex-wrap:wrap;gap:var(--spacing-xs) var(--spacing-sm)}}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;font-size:.875rem;font-weight:500;border-radius:var(--border-radius-md);border:1px solid transparent;cursor:pointer;text-decoration:none;transition:all var(--transition-fast)}.btn-primary{background-color:#334155;color:#fff;border-color:#334155;transition:all .2s ease-in-out;box-shadow:0 1px 2px #0000000d}.btn-primary:hover{background-color:#475569;border-color:#475569;color:#fff;transform:translateY(-1px);box-shadow:0 4px 12px #33415533}.btn-primary:active{background-color:#1e293b;border-color:#1e293b;transform:translateY(0);box-shadow:0 1px 2px #0000001a}.btn-secondary{background-color:var(--color-surface);border-color:var(--color-border);color:var(--color-text)}.btn-secondary:hover{background-color:var(--color-bg);border-color:var(--color-text-light)}.btn-coffee{background-color:#fcd34d;color:#78350f;border-color:#f59e0b;font-weight:600;gap:var(--spacing-xs)}.btn-coffee:hover{background-color:#fbbf24}.btn-coffee:disabled,#donate-btn-header:disabled,#donate-btn-footer:disabled{opacity:.65;cursor:not-allowed;pointer-events:none;box-shadow:none;transform:none}.card{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--border-radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-sm)}.dropzones-container{display:grid;grid-template-columns:1fr;gap:var(--spacing-lg);width:100%}@media (min-width: 768px){.dropzones-container{grid-template-columns:1fr 1fr}}.dropzone{border:2px dashed var(--color-border);border-radius:var(--border-radius-lg);padding:var(--spacing-xl);text-align:center;background-color:var(--color-surface);cursor:pointer;transition:border-color var(--transition-fast),background-color var(--transition-fast);display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md);position:relative}.dropzone:hover,.dropzone.dragover{border-color:var(--color-brand);background-color:var(--color-bg)}.dropzone input[type=file]{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;cursor:pointer}.dropzone-icon{width:3rem;height:3rem;color:var(--color-text-light);transition:color var(--transition-fast)}.dropzone:hover .dropzone-icon{color:var(--color-brand)}.dropzone-title{font-size:1.125rem;font-weight:600;color:var(--color-text)}.dropzone-subtitle{font-size:.875rem;color:var(--color-text-muted)}.file-card{border:1px solid var(--color-border);border-radius:var(--border-radius-md);padding:var(--spacing-md);background-color:var(--color-bg);display:flex;align-items:center;justify-content:space-between;width:100%;gap:var(--spacing-sm)}.file-info{display:flex;flex-direction:column;gap:2px;overflow:hidden;text-align:left}.file-name{font-weight:600;font-size:.95rem;color:var(--color-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-meta{font-size:.8rem;color:var(--color-text-muted)}.file-size-warning{color:#d97706;font-size:.8rem;font-weight:500;margin-top:2px}.file-multisheet{color:var(--color-brand);font-size:.8rem;font-weight:500;margin-top:2px}.hint-container{margin-top:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-md);background-color:var(--color-surface);border-radius:var(--border-radius-md);border:1px solid var(--color-border);font-size:.85rem;color:var(--color-text-muted)}.alert{padding:var(--spacing-md);border-radius:var(--border-radius-md);font-size:.875rem;display:flex;align-items:flex-start;gap:var(--spacing-sm);width:100%;text-align:left}.alert-danger{background-color:#fef2f2;color:#991b1b;border:1px solid #fca5a5}.alert-warning{background-color:#fffbeb;color:#92400e;border:1px solid #fde68a}.progress-bar-container{width:100%;background-color:var(--color-border);height:6px;border-radius:3px;overflow:hidden;margin-top:var(--spacing-xs)}.progress-bar{height:100%;background-color:var(--color-brand);width:0%;transition:width .2s ease}.results-header{border-bottom:1px solid var(--color-border);padding-bottom:var(--spacing-md)}.results-counters{font-size:.95rem;font-weight:500;margin-top:var(--spacing-xs)}.search-wrapper{position:relative}.search-input{width:250px;padding:.5rem .75rem;font-size:.875rem;border-radius:var(--border-radius-md);border:1px solid var(--color-border);background-color:var(--color-surface);color:var(--color-text);outline:none;transition:border-color .15s ease-in-out,box-shadow .15s ease-in-out}.search-input:focus{border-color:var(--color-brand);box-shadow:0 0 0 2px #1f1f1f1a}.table-responsive{border:1px solid var(--color-border);border-radius:var(--border-radius-md);box-shadow:var(--shadow-sm);max-height:750px;overflow-y:auto}.results-table{width:100%;border-collapse:collapse;text-align:left;font-size:.875rem}.results-table thead{position:sticky;top:0;z-index:10}.results-table th{background-color:var(--color-surface);color:var(--color-text);font-weight:600;padding:var(--spacing-sm) var(--spacing-md);border-bottom:2px solid var(--color-border)}.results-table td{padding:var(--spacing-sm) var(--spacing-md);border-bottom:1px solid var(--color-border);word-break:break-all;font-family:var(--font-sans);vertical-align:top}.results-table tr.row-equal{background-color:var(--color-equal-row)}.results-table tr.row-diff{background-color:var(--color-diff-row)}.cell-glyph{font-weight:700;font-family:monospace;margin-left:var(--spacing-xs);display:inline-block}.row-equal .cell-glyph{color:#166534}.row-diff .cell-glyph{color:#991b1b}.cell-value-empty{color:var(--color-text-muted);font-style:italic;font-size:.95rem}.pagination-container{padding-top:var(--spacing-md);border-top:1px solid var(--color-border);font-size:.875rem}.pagination-pages button{min-width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;padding:0 .5rem;border-radius:var(--border-radius-sm);font-size:.75rem}.pagination-pages button.active{background-color:var(--color-brand);color:#fff;border-color:var(--color-brand)}@media print{.results-table thead{position:static}.results-table tr.row-equal{background-color:#f2fbf5!important}.results-table tr.row-diff{background-color:#fff5f5!important}.pagination-container,.filters-container,.results-header .btn{display:none!important}}#donate-modal,#close-confirm-modal{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9998;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:none;align-items:center;justify-content:center;padding:var(--spacing-md)}#close-confirm-modal{z-index:9999}.donate-modal-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--border-radius-lg);padding:var(--spacing-xl);max-width:820px;width:95vw;position:relative;box-shadow:0 24px 60px #00000040;display:flex;flex-direction:column;gap:var(--spacing-md)}.donate-modal-close-btn{position:absolute;top:1rem;right:1rem;background:transparent;border:none;font-size:1.35rem;cursor:pointer;color:var(--color-text-muted);width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.donate-modal-close-btn:hover{background:var(--color-bg);color:var(--color-text)}.donate-modal-header h2{margin:0 0 .35rem;font-size:1.35rem;font-weight:700;color:var(--color-text)}.donate-modal-header p{margin:0;color:var(--color-text-muted);font-size:.875rem;line-height:1.45}#donate-modal-body{display:flex;flex-direction:column;gap:var(--spacing-md);overflow-y:auto;max-height:70vh}.donate-section{display:flex;flex-direction:column;gap:var(--spacing-xs);background:var(--color-bg);padding:var(--spacing-md);border-radius:var(--border-radius-md);border:1px solid var(--color-border)}.donate-section-title-wrapper h3{margin:0;font-size:.95rem;font-weight:600;color:var(--color-text);display:flex;align-items:center;gap:.4rem}#monthly-info-btn{cursor:pointer;color:var(--color-text-muted);display:inline-flex;align-items:center;transition:color var(--transition-fast)}#monthly-info-btn:hover{color:var(--color-brand)}#monthly-info-btn svg{width:1rem;height:1rem}#monthly-info-box{display:none;padding:var(--spacing-xs) var(--spacing-sm);background:var(--color-surface);border-radius:var(--border-radius-sm);font-size:.8rem;color:var(--color-text-muted);line-height:1.4;border-left:3px solid var(--color-brand)}.donate-grid{display:grid;gap:.5rem;margin-top:.25rem}.donate-grid-5{grid-template-columns:repeat(5,1fr)}.donate-grid-4{grid-template-columns:repeat(4,1fr)}@media (max-width: 520px){.donate-grid-5{grid-template-columns:repeat(3,1fr)}.donate-grid-4{grid-template-columns:repeat(2,1fr)}}.donate-btn-option{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:.75rem .3rem;font-size:.95rem;font-weight:600;border-radius:var(--border-radius-md);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);cursor:pointer;transition:all .15s ease-in-out;box-shadow:0 1px 2px #0000000a}.donate-btn-option:hover{border-color:var(--color-brand);background:var(--color-surface);transform:translateY(-1px);box-shadow:0 4px 12px #00000014}.donate-btn-option:active{transform:translateY(0)}.donate-btn-recommended{border-color:var(--color-brand);background:var(--color-surface);box-shadow:0 0 0 1.5px var(--color-brand),0 4px 12px #00000014}.donate-btn-recommended:hover{background:var(--color-brand);color:#fff}.donate-btn-recommended:hover .recommended-badge{background:#fff;color:var(--color-brand)}.recommended-badge{position:absolute;top:-10px;background:var(--color-brand);color:#fff;font-size:.6rem;font-weight:700;padding:1px 5px;border-radius:10px;letter-spacing:.02em;text-transform:uppercase;white-space:nowrap}.confirm-modal-card{background:var(--color-surface);border-radius:var(--border-radius-lg);padding:var(--spacing-xl);max-width:420px;width:100%;position:relative;box-shadow:0 25px 50px #00000059;display:flex;flex-direction:column;gap:var(--spacing-md);text-align:center;border:1px solid var(--color-border)}.confirm-modal-card h3{margin:0;font-size:1.15rem;font-weight:700;color:var(--color-text)}.confirm-modal-card p{color:var(--color-text-muted);margin:0;font-size:.925rem;line-height:1.5}.confirm-modal-actions{display:flex;gap:var(--spacing-sm);margin-top:var(--spacing-xs);justify-content:center}.confirm-modal-actions .btn{flex:1;padding:.65rem;font-weight:600}#donate-success-screen{display:none;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-md);padding:var(--spacing-xl) 0;text-align:center}#donate-success-screen svg{width:4rem;height:4rem;color:var(--color-equal)}#donate-success-screen h3{margin:0;font-size:1.25rem;color:var(--color-text)}#donate-success-screen p{color:var(--color-text-muted);font-size:.9rem;margin:0}.stats-outer-card{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--border-radius-lg);padding:var(--spacing-lg);width:100%;box-shadow:var(--shadow-sm);margin-top:var(--spacing-md)}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md);width:100%}.stat-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--border-radius-lg);padding:var(--spacing-lg) var(--spacing-xl);min-height:125px;display:flex;align-items:center;gap:var(--spacing-lg);box-shadow:0 1px 3px #00000005;transition:transform var(--transition-fast),box-shadow var(--transition-fast),border-color var(--transition-fast)}.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--color-brand)}.stat-icon{width:3.5rem;height:3.5rem;border-radius:var(--border-radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--color-surface);border:1px solid var(--color-border)}.stat-icon-comparisons{color:#2563eb;background:#2563eb14;border-color:#2563eb33}.stat-icon-cells{color:#4f46e5;background:#4f46e514;border-color:#4f46e533}.stat-icon-equals{color:var(--color-equal);background:#22c55e14;border-color:#22c55e33}.stat-icon-diffs{color:var(--color-diff);background:#ef444414;border-color:#ef444433}.stat-info{display:flex;flex-direction:column;gap:.2rem;align-items:flex-start;text-align:left;overflow:hidden}.stat-value{font-size:2.25rem;font-weight:800;color:var(--color-text);line-height:1.1;letter-spacing:-.03em}.stat-label{font-size:1.05rem;font-weight:600;color:var(--color-text-muted);line-height:1.3}@media (max-width: 640px){.stats-outer-card{padding:var(--spacing-md)}.stats-grid{grid-template-columns:1fr;gap:var(--spacing-sm)}.stat-card{min-height:95px;padding:var(--spacing-md) var(--spacing-lg);gap:var(--spacing-md)}.stat-icon{width:2.75rem;height:2.75rem}.stat-icon svg{width:22px;height:22px}.stat-value{font-size:1.75rem}.stat-label{font-size:.9rem}}@keyframes statPulse{0%{transform:scale(1)}50%{transform:scale(1.15);color:var(--color-brand)}to{transform:scale(1)}}.stat-value-pulse{animation:statPulse .8s cubic-bezier(.4,0,.2,1);display:inline-block}