:root{--bg:#f4f7fb;--card:#fff;--text:#101828;--muted:#667085;--border:#d0d5dd;--primary:#2563eb;--primary-dark:#1d4ed8;--primary-soft:#eff6ff;--danger:#b42318;--shadow:0 10px 30px #10182814}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,select{font:inherit}button{cursor:pointer}.app{width:min(1100px,100% - 32px);margin:0 auto;padding:42px 0 70px}.header{justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:32px;display:flex}.header-actions{flex-shrink:0;align-items:center;gap:12px;display:flex}.currency-select{min-width:170px;color:var(--muted);flex-direction:column;gap:5px;font-size:12px;font-weight:700;display:flex}.currency-select select{min-height:44px;color:var(--text);border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:10px;outline:none;padding:9px 34px 9px 12px}.currency-select 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.15s}.tab:hover{color:var(--text)}.tab.active{color:var(--primary);background:var(--card);box-shadow:0 2px 8px #10182814}:root[data-theme=dark] .tab.active{color:var(--text);background:var(--card);box-shadow:0 2px 8px #0000004d}@media (width<=700px){.tabs{flex-direction:column;gap:4px}}.error-message{color:var(--danger);background:#fffbfa;border:1px solid #fecdca;border-radius:10px;margin-top:18px;padding:12px 16px;font-size:14px;font-weight:600}:root[data-theme=dark] .error-message{color:#fecaca;background:#3b1d20;border-color:#8f3d46}.info-message{color:var(--muted);margin:8px 0 0;font-size:13px;line-height:1.5}.target-margin-info,.production-waste{background:var(--bg);border:1px solid var(--border);border-radius:12px;margin-top:24px;padding:20px}.target-margin-info h3,.production-waste h3{letter-spacing:-.01em;margin:0 0 8px;font-size:15px;font-weight:700}.recommended-price{color:var(--primary);letter-spacing:-.02em;margin:0;font-size:28px;font-weight:800}.production-waste 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