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cubic-bezier(.4,0,.2,1)}.unit-toggle-option.active .unit-toggle-icon{transform:scale(1.1)}.unit-toggle-text{font-size:13px;letter-spacing:.3px}.unit-toggle-indicator{position:absolute;top:4px;bottom:4px;left:4px;width:calc(50% - 4px);background:linear-gradient(135deg,var(--primary-color, #2563eb) 0%,var(--primary-dark, #1e40af) 100%);border-radius:8px;transition:transform .3s cubic-bezier(.4,0,.2,1);z-index:1;box-shadow:0 2px 8px #2563eb4d}.unit-toggle-indicator.metric{transform:translate(calc(100% + 4px));background:linear-gradient(135deg,var(--secondary-color, #10b981) 0%,#059669 100%);box-shadow:0 2px 8px #10b9814d}@media(max-width:640px){.unit-toggle-wrapper{padding:3px}.unit-toggle-option{padding:6px 12px;gap:4px}.unit-toggle-text{font-size:12px}.unit-toggle-icon{font-size:14px}}.theme-toggle{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:none;border:1px solid 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var(--color-border);margin-bottom:28px}.category-header h1{font-family:Space Grotesk,sans-serif;font-size:1.75rem;font-weight:700;color:var(--color-text);margin-bottom:8px}.category-header p{color:var(--color-muted);font-size:14px;line-height:1.6;max-width:680px}.content-section{background-color:var(--color-surface);padding:28px;border-radius:var(--radius-md);margin:40px auto;border:1px solid var(--color-border)}.content-section h2{font-family:Space Grotesk,sans-serif;font-size:1.25rem;color:var(--color-text);margin-bottom:12px;font-weight:600}.content-section h3{font-family:Space Grotesk,sans-serif;font-size:1rem;color:var(--color-text);margin-top:20px;margin-bottom:6px;font-weight:600}.content-section p,.content-section li{font-size:14px;color:var(--color-muted);margin-bottom:10px;line-height:1.6}.content-section ul,.content-section ol{padding-left:20px;margin-bottom:14px}@media(max-width:640px){.hero{padding:32px 16px 28px}.hero h1{font-size:1.75rem}.calculators-grid{grid-template-columns:1fr;padding:0 16px}.content-section{padding:20px 16px;margin:28px 16px}.category-header{padding:24px 16px 20px}}*{margin:0;padding:0;box-sizing:border-box}:root{--color-bg: #E8E3D5;--color-surface: #F8F5EE;--color-surface-2: #DAD5C7;--color-primary: #1C2B3A;--color-primary-60: rgba(28, 43, 58, .6);--color-accent: #0EA5E9;--color-accent-dim: #BAE6FD;--color-text: #1C2B3A;--color-muted: #64748B;--color-subtle: #94A3B8;--color-border: #BDB7AA;--color-border-strong:#8F8980;--color-success: #16A34A;--color-warning: #D97706;--color-error: #DC2626;--color-info: #0284C7;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(28, 43, 58, .13);--shadow-md: 0 2px 8px rgba(28, 43, 58, .15);--shadow-lg: 0 4px 16px rgba(28, 43, 58, .16);--primary-color: var(--color-accent);--primary-dark: #0284C7;--secondary-color: var(--color-muted);--background: var(--color-bg);--surface: var(--color-surface);--text-primary: var(--color-text);--text-secondary: var(--color-muted);--border-color: var(--color-border);--shadow: var(--shadow-sm);--shadow-lg: var(--shadow-md);--md-sys-color-primary: var(--color-accent);--md-sys-color-on-primary: #ffffff;--md-sys-color-primary-container: var(--color-surface-2);--md-sys-color-on-primary-container:var(--color-text);--md-sys-color-secondary: var(--color-muted);--md-sys-color-on-secondary: #ffffff;--md-sys-color-secondary-container: var(--color-surface-2);--md-sys-color-on-secondary-container: var(--color-text);--md-sys-color-error: var(--color-error);--md-sys-color-on-error: #ffffff;--md-sys-color-error-container: #fde8e8;--md-sys-color-on-error-container: var(--color-error);--md-sys-color-background: var(--color-bg);--md-sys-color-on-background: var(--color-text);--md-sys-color-surface: var(--color-surface);--md-sys-color-on-surface: var(--color-text);--md-sys-color-surface-variant: var(--color-surface-2);--md-sys-color-on-surface-variant: var(--color-muted);--md-sys-color-outline: var(--color-border);--md-sys-elevation-0: none;--md-sys-elevation-1: var(--shadow-sm);--md-sys-elevation-2: var(--shadow-md);--md-sys-elevation-3: var(--shadow-lg);--md-sys-elevation-4: var(--shadow-lg);--color-btn-text: #ffffff;--color-btn-hover: #2a3d52;--color-btn-active: #1C2B3A;color-scheme:light}:root[data-theme=dark]{--color-bg: #0F1923;--color-surface: #1A2636;--color-surface-2: #243347;--color-primary: #E2EAF4;--color-primary-60: rgba(226, 234, 244, .6);--color-accent: #38BDF8;--color-accent-dim: #0C4A6E;--color-text: #E2EAF4;--color-muted: #94A3B8;--color-subtle: #64748B;--color-border: #2A3F55;--color-border-strong:#3D5470;--color-success: #4ADE80;--color-warning: #FBB437;--color-error: #F87171;--color-info: #38BDF8;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .4);--shadow-md: 0 2px 10px rgba(0, 0, 0, .5);--shadow-lg: 0 4px 20px rgba(0, 0, 0, .6);--color-btn-text: 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.1s ease-out;appearance:none}.input-group input:focus,.input-group select:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 2px var(--color-accent-dim)}.input-group input::placeholder{color:var(--color-subtle)}.result-box{background-color:var(--color-surface);border:1px solid var(--color-border);border-left:3px solid var(--color-accent);padding:20px 24px;border-radius:var(--radius-md);margin-top:24px}.result-box h3{font-family:DM Sans,sans-serif;font-size:11px;font-weight:500;text-transform:uppercase;letter-spacing:.08em;color:var(--color-muted);margin-bottom:8px}.result-box .result-value{font-family:DM Mono,monospace;font-variant-numeric:tabular-nums;font-size:32px;font-weight:500;color:var(--color-text);line-height:1.1}.result-box .result-unit{font-family:DM Sans,sans-serif;font-size:14px;color:var(--color-muted);margin-top:4px}.card{background:var(--color-surface);border-radius:var(--radius-md);padding:24px;box-shadow:var(--shadow-sm);margin-bottom:24px;border:1px solid var(--color-border)}.card h2{color:var(--color-text);margin-bottom:16px;font-size:1.25rem}.card p{color:var(--color-muted);margin-bottom:20px;font-size:.9rem}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.fade-in{animation:fadeIn .2s ease-out}@media(max-width:768px){.container{padding:0 16px}body{font-size:16px}.btn,button,[role=button]{min-height:44px}.card{padding:16px}}.lazy-image{opacity:0;transition:opacity .2s ease-out}.lazy-image.loaded{opacity:1}.lazy-image.loading{background:var(--color-surface-2)}