:root{--google-blue: #1a73e8;--google-blue-light: #4285f4;--google-blue-dark: #1557b0;--bg-primary: #F8F9FA;--bg-card: #ffffff;--text-primary: #1f2937;--text-secondary: #6b7280;--text-muted: #9ca3af;--border-color: #e5e7eb;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--radius-lg: 24px;--radius-xl: 32px;--transition: all .2s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased}.calculator-container{min-height:100vh;padding:16px;background:linear-gradient(135deg,#f8f9fa,#e8f0fe)}@media(min-width:1024px){.calculator-container{padding:40px}}.calculator-grid{max-width:1400px;margin:0 auto;display:grid;grid-template-columns:1fr;gap:32px}@media(min-width:1024px){.calculator-grid{grid-template-columns:2fr 1fr}}.header{display:flex;align-items:center;gap:12px;margin-bottom:24px}.logo-box{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:22px;background:linear-gradient(135deg,var(--google-blue) 0%,var(--google-blue-dark) 100%);box-shadow:0 4px 14px #1a73e866}.title{font-size:1.5rem;font-weight:900;letter-spacing:-.02em;color:var(--text-primary)}.version{color:#cbd5e1;font-weight:300;font-style:italic}.settings-area{display:flex;flex-direction:column;gap:24px}.card{background:var(--bg-card);padding:32px;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border-color);transition:var(--transition)}.card:hover{box-shadow:var(--shadow-md)}.card-title{font-size:10px;font-weight:800;color:var(--text-muted);text-transform:uppercase;letter-spacing:2px;margin-bottom:24px;display:flex;align-items:center;gap:8px}.card-icon{color:var(--google-blue)}.section-note{font-size:12px;color:var(--text-muted);margin-bottom:16px;font-style:italic}.form-grid{display:grid;grid-template-columns:1fr;gap:24px}@media(min-width:768px){.form-grid{grid-template-columns:1fr 1fr}}.select-box{flex:1}.select-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.select-label{font-size:14px;font-weight:700;color:var(--text-primary)}.select-price{font-size:12px;font-weight:700;color:var(--google-blue);background:#1a73e81a;padding:4px 10px;border-radius:8px}.select-wrapper{position:relative}.select-input{width:100%;background:#f1f5f9;border:2px solid transparent;border-radius:12px;padding:16px 48px 16px 16px;font-size:15px;font-weight:600;color:var(--text-primary);appearance:none;cursor:pointer;transition:var(--transition)}.select-input:focus{outline:none;border-color:var(--google-blue);background:#fff;box-shadow:0 0 0 3px #1a73e826}.select-arrow{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none}.qty-grid{display:grid;grid-template-columns:1fr;gap:4px}@media(min-width:768px){.qty-grid{grid-template-columns:1fr 1fr;gap:8px 40px}}.qty-row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid #f1f5f9}.qty-row:last-child{border-bottom:none}.qty-label-section{display:flex;flex-direction:column;gap:2px}.qty-label{font-size:14px;font-weight:600;color:var(--text-secondary)}.qty-price-note{font-size:10px;color:var(--text-muted);font-style:italic}.qty-right{display:flex;align-items:center;gap:12px}.qty-price{font-size:11px;font-weight:700;color:var(--google-blue);background:#1a73e81a;padding:3px 8px;border-radius:6px}.qty-select{background:#f1f5f9;border:none;border-radius:8px;padding:6px 12px;font-size:14px;font-weight:700;color:var(--google-blue);cursor:pointer;transition:var(--transition)}.qty-select:focus{outline:none;box-shadow:0 0 0 2px #1a73e84d}.toggle-grid{display:grid;grid-template-columns:1fr;gap:12px}@media(min-width:768px){.toggle-grid{grid-template-columns:1fr 1fr}}.toggle-row{display:flex;align-items:center;justify-content:space-between;padding:16px;border-radius:16px;border:2px solid var(--border-color);cursor:pointer;transition:var(--transition);background:#fff}.toggle-row:hover:not(.disabled){border-color:#bfdbfe;background:#f8fafc}.toggle-row.active{border-color:var(--google-blue);background:#1a73e80d}.toggle-row.disabled{opacity:.25;cursor:not-allowed;filter:grayscale(1)}.toggle-content{display:flex;flex-direction:column;gap:4px}.toggle-label{font-size:14px;font-weight:700;color:var(--text-primary);display:flex;align-items:center;gap:8px}.toggle-price{font-size:11px;font-weight:700;color:var(--google-blue)}.external-badge{font-size:9px;color:#fff;background:#f97316;padding:2px 8px;border-radius:9999px;font-weight:700}.toggle-badge{font-size:10px;color:var(--google-blue);font-weight:700}.included-badge{font-size:9px;color:#fff;background:var(--google-blue);padding:2px 8px;border-radius:9999px;font-weight:700}.toggle-tooltip{font-size:9px;color:var(--text-muted);font-style:italic}.toggle-switch{width:44px;height:24px;border-radius:9999px;background:#e2e8f0;position:relative;transition:var(--transition);flex-shrink:0}.toggle-switch.on{background:var(--google-blue)}.toggle-thumb{position:absolute;top:4px;left:4px;width:16px;height:16px;background:#fff;border-radius:50%;box-shadow:var(--shadow-sm);transition:var(--transition)}.toggle-switch.on .toggle-thumb{left:24px}.summary-wrapper{position:relative}@media(min-width:1024px){.summary-wrapper{position:sticky;top:32px}}.summary-card{background:#fff;border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);border:1px solid var(--border-color);overflow:hidden}.summary-header{padding:32px;background:linear-gradient(135deg,#0f172a,#1e293b);color:#fff}.summary-header-content{display:flex;justify-content:space-between;align-items:center}.summary-title{font-size:20px;font-weight:900}.summary-icon{color:#60a5fa}.summary-body{padding:32px;display:flex;flex-direction:column;gap:12px}.summary-row{display:flex;justify-content:space-between;font-size:14px;font-weight:600;color:var(--text-secondary)}.summary-row.bold{color:var(--text-primary);font-weight:800;font-size:16px;padding-top:8px}.summary-row .negative{color:var(--google-blue)}.summary-divider{height:1px;background:var(--border-color);margin:8px 0}.discount-slider-section{padding-top:16px;margin-top:8px;border-top:1px solid var(--border-color);display:flex;flex-direction:column;gap:16px}.discount-header{display:flex;justify-content:space-between;align-items:center}.discount-label{font-size:13px;font-weight:700;color:var(--text-secondary)}.discount-badge{background:var(--google-blue);color:#fff;font-size:11px;font-weight:800;padding:4px 10px;border-radius:9999px}.discount-slider{width:100%;height:8px;background:#e2e8f0;border-radius:9999px;appearance:none;cursor:pointer}.discount-slider::-webkit-slider-thumb{appearance:none;width:20px;height:20px;background:var(--google-blue);border-radius:50%;cursor:pointer;box-shadow:0 2px 6px #1a73e866;transition:var(--transition)}.discount-slider::-webkit-slider-thumb:hover{transform:scale(1.1)}.final-price-section{padding-top:24px;margin-top:8px;border-top:2px solid #f1f5f9;text-align:right}.final-price-label{font-size:10px;color:var(--text-muted);font-weight:800;text-transform:uppercase;letter-spacing:2px}.final-price-value{font-size:42px;font-weight:900;color:var(--google-blue);letter-spacing:-.03em;margin-top:4px;line-height:1}.final-price-unit{font-size:14px;font-weight:500;margin-left:4px}.download-btn{width:100%;padding:20px;border-radius:16px;background:linear-gradient(135deg,var(--google-blue) 0%,var(--google-blue-dark) 100%);color:#fff;font-size:16px;font-weight:800;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:12px;box-shadow:0 4px 14px #1a73e866;transition:var(--transition);margin-top:16px}.download-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #1a73e880}.download-btn:active{transform:scale(.98)}