:root{--bg: #fafafa;--surface: #ffffff;--surface-2: #f4f4f5;--surface-3: #e4e4e7;--border: #e4e4e7;--border-strong: #d4d4d8;--text: #18181b;--text-dim: #71717a;--text-faint: #a1a1aa;--accent: #10b981;--accent-hover: #059669;--accent-soft: #ecfdf5;--accent-soft-2: #d1fae5;--green: #10b981;--green-soft: #ecfdf5;--yellow: #f59e0b;--yellow-soft: #fffbeb;--orange: #f97316;--orange-soft: #fff7ed;--red: #ef4444;--red-soft: #fef2f2;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-lg: 0 4px 6px rgba(0, 0, 0, .05), 0 2px 4px rgba(0, 0, 0, .04);--radius: 10px;--radius-sm: 6px;--radius-lg: 12px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "SF Mono", "Fira Code", "Consolas", monospace}*{margin:0;padding:0;box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);min-height:100vh;padding:32px 20px 64px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-feature-settings:"cv11","ss01"}.container{max-width:760px;margin:0 auto}h1{font-size:1.7rem;font-weight:700;letter-spacing:-.02em;margin-bottom:8px;color:var(--text);line-height:1.2}.subtitle{color:var(--text-dim);font-size:.95rem;margin-bottom:24px;font-weight:400}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.brand{display:inline-flex;align-items:center;gap:8px;color:var(--text);user-select:none}.brand-icon{width:24px;height:24px;color:var(--accent);flex-shrink:0}.brand-text{font-size:1rem;font-weight:600;letter-spacing:-.01em}.lang-picker{display:flex;align-items:center}.locale-select{appearance:none;background:transparent;border:1px solid var(--border);color:var(--text-dim);border-radius:6px;padding:5px 24px 5px 10px;cursor:pointer;font-size:.82rem;font-weight:500;font-family:inherit;transition:all .15s;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center}.locale-select:hover{color:var(--text);border-color:var(--border-strong)}.locale-select:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.skip-link{position:absolute;top:-100px;left:16px;background:var(--accent);color:#fff;padding:8px 16px;border-radius:6px;text-decoration:none;z-index:1000;transition:top .2s ease;font-weight:600}.skip-link:focus{top:16px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}.step{margin-top:32px;padding:0}.step:first-of-type{margin-top:16px}.step-label{display:flex;align-items:center;gap:10px;font-size:.78rem;font-weight:700;color:var(--text-dim);text-transform:uppercase;letter-spacing:.08em;margin:0 0 14px}.step-num{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;background:var(--accent);color:#fff;font-size:.72rem;font-weight:700}.step-help{font-size:.85rem;color:var(--text-dim);margin:0 0 16px;line-height:1.5}.dropzone{min-height:160px;background:var(--surface);border:2px dashed var(--border-strong);border-radius:var(--radius-lg);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:32px 20px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s}.dropzone:hover,.dropzone:focus-visible{border-color:var(--accent);background:var(--surface);outline:none}.dropzone.dragover{border-color:var(--accent);background:var(--accent-soft)}.dropzone-icon{width:36px;height:36px;color:var(--text-dim);margin-bottom:12px}.dropzone-title{font-size:1.05rem;font-weight:600;color:var(--text);margin-bottom:4px}.dropzone-subtitle{font-size:.88rem;color:var(--text-dim);margin-bottom:8px}.dropzone-meta{font-size:.75rem;color:var(--text-faint)}.mode-tabs{display:flex;gap:4px;background:var(--surface-2);padding:4px;border-radius:var(--radius)}.mode-tab{flex:1;font:inherit;font-size:.85rem;font-weight:600;padding:10px 8px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text-dim);cursor:pointer;transition:background .15s,color .15s}.mode-tab:hover{color:var(--text)}.mode-tab.active{background:var(--surface);color:var(--accent-hover);box-shadow:var(--shadow-sm)}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px 16px;margin-top:16px;align-items:stretch}.form-group{display:flex;flex-direction:column;gap:8px;min-width:0}.form-group--inline{height:40px;justify-content:center;align-self:flex-end}.form-group label{font-size:.78rem;font-weight:700;color:var(--text);text-transform:uppercase;letter-spacing:.04em}.form-group input,.form-group select{font:inherit;font-size:.95rem;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);transition:border-color .15s;width:100%;min-width:0}.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--accent)}.form-group input[type=number]{font-variant-numeric:tabular-nums;font-weight:600}.form-divider{height:1px;background:var(--border);margin:32px 0 28px}.checkbox{display:inline-flex;align-items:center;gap:8px;font-size:.88rem;color:var(--text);cursor:pointer;user-select:none;line-height:1.4}.checkbox input{appearance:none;-webkit-appearance:none;width:16px;height:16px;border:1.5px solid var(--border-strong);border-radius:50%;background:var(--surface);cursor:pointer;position:relative;flex-shrink:0;margin:0;transition:background .15s,border-color .15s}.checkbox input:hover{border-color:var(--accent)}.checkbox input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.checkbox input:checked{background:var(--accent);border-color:var(--accent);background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M3.5 8.5 L6.5 11.5 L12.5 4.5' stroke='%23fff' stroke-width='2' fill='none' stroke-linecap='round' stroke-linejoin='round'/></svg>");background-position:center;background-size:11px 11px;background-repeat:no-repeat}.checkbox input:disabled{background:var(--surface-3);border-color:var(--border);cursor:not-allowed}.progress{margin-top:24px;padding:16px 20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.progress-bar-bg{height:6px;background:var(--surface-2);border-radius:3px;overflow:hidden}.progress-bar-fg{height:100%;background:var(--accent);transition:width .2s}.progress-text{font-size:.85rem;color:var(--text-dim);margin-top:8px;font-variant-numeric:tabular-nums}#results{display:grid;gap:10px;margin-top:16px}.result-card{display:grid;grid-template-columns:64px 1fr auto auto;gap:14px;align-items:center;padding:14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);transition:border-color .15s}.result-card:hover{border-color:var(--border-strong)}.result-thumb{width:64px;height:64px;object-fit:cover;border-radius:var(--radius-sm);background:var(--surface-2)}.result-info{display:flex;flex-direction:column;gap:3px;min-width:0}.result-name{font-size:.88rem;font-weight:500;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.result-meta{font-size:.78rem;color:var(--text-dim);font-variant-numeric:tabular-nums}.result-savings{font-size:.88rem;font-weight:700;color:var(--green);white-space:nowrap;font-variant-numeric:tabular-nums}.result-savings.warn{color:var(--orange)}.result-savings.bad{color:var(--red)}.actions{display:flex;gap:10px;margin-top:16px;justify-content:center}.form-actions{display:flex;gap:10px;margin-top:24px;justify-content:stretch}.form-actions .btn{width:100%;min-width:0}.aspect-warning{display:flex;flex-direction:column;gap:10px;margin:16px 0;padding:16px 18px;background:#fff7ed;border:1px solid #fb923c;border-left:4px solid #f97316;border-radius:10px;color:#7c2d12}.aspect-warning[hidden]{display:none}.aspect-warning-icon{font-size:1.5rem;line-height:1;font-weight:700;color:#f97316}.aspect-warning-text{flex:1}.aspect-warning-title{font-size:.95rem;font-weight:700;margin:0 0 4px;color:#7c2d12}.aspect-warning-body{font-size:.85rem;margin:0;color:#9a3412;line-height:1.5}.aspect-warning-actions{display:flex;flex-direction:column;gap:6px;margin-top:4px}.fit-btn{display:flex;flex-direction:column;align-items:flex-start;padding:10px 14px;background:#fff;border:1.5px solid #e5e7eb;border-radius:8px;cursor:pointer;text-align:left;font:inherit;color:var(--text-primary);transition:border-color .15s,background .15s}.fit-btn:hover{border-color:#fb923c;background:#fffbeb}.fit-btn.active{border-color:var(--accent, #059669);background:#ecfdf5}.fit-btn-name{font-size:.88rem;font-weight:600;color:var(--text-primary);margin-bottom:2px}.fit-btn-desc{font-size:.78rem;color:var(--text-secondary, #6b7280);line-height:1.4}@media(min-width:700px){.aspect-warning{flex-direction:row;align-items:center}.aspect-warning-actions{flex-direction:row;flex:1;margin-top:0}.fit-btn{flex:1}}.btn{font:inherit;font-size:.92rem;font-weight:600;padding:12px 24px;border-radius:var(--radius-sm);border:1px solid transparent;cursor:pointer;transition:background .15s,border-color .15s,color .15s;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:6px}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{background:var(--surface-3);color:var(--text-faint);cursor:not-allowed}.btn-primary.btn-outline{background:transparent;color:var(--accent);border-color:var(--accent);padding:14px 24px}.btn-primary.btn-outline:hover{background:var(--accent-soft);border-color:var(--accent-hover);color:var(--accent-hover)}.btn-primary.btn-outline:disabled{background:transparent;color:var(--text-faint);border-color:var(--border);cursor:not-allowed}.btn-ghost{background:transparent;border-color:var(--border);color:var(--text-dim)}.btn-ghost:hover{border-color:var(--border-strong);color:var(--text)}.footer{text-align:center;margin-top:48px;font-size:.78rem;color:var(--text-faint)}.footer a{color:var(--text-dim);text-decoration:none}.footer a:hover{color:var(--accent-hover);text-decoration:underline}.footer-sep{color:var(--text-faint);margin:0 4px}.seo-content{margin-top:64px;padding-top:32px;border-top:1px solid var(--border);font-size:.92rem;line-height:1.65;color:var(--text-dim)}.seo-content h2{font-size:1.25rem;font-weight:700;color:var(--text);margin:0 0 12px;letter-spacing:-.01em}.seo-content h3{font-size:1rem;font-weight:600;color:var(--text);margin:24px 0 8px;letter-spacing:-.005em}.seo-content p{margin:0 0 12px}.seo-content p:last-child{margin-bottom:0}.seo-content a{color:var(--accent-hover);text-decoration:underline;text-underline-offset:2px;text-decoration-color:#10b98166}.seo-content a:hover{text-decoration-color:var(--accent)}.seo-content strong{color:var(--text);font-weight:600}@media(max-width:500px){body{padding:20px 16px 48px}h1{font-size:1.4rem}.form-row{grid-template-columns:1fr 1fr}.form-group--inline{grid-column:1 / -1;padding-bottom:0}.result-card{grid-template-columns:48px 1fr}.result-card .result-savings,.result-card .btn{grid-column:1 / -1}.mode-tabs{flex-wrap:wrap}.mode-tab{font-size:.78rem}}