@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Montserrat:wght@700;800&display=swap";:root{--bg-color: #0a0a0a;--bg-panel: #171717;--bg-card: rgba(38, 38, 38, .5);--text-main: #e5e5e5;--text-muted: #a3a3a3;--primary: #dc2626;--primary-hover: #b91c1c;--primary-glow: rgba(220, 38, 38, .25);--border: rgba(255, 255, 255, .06);--glass-border: rgba(255, 255, 255, .06);--glass-blur: blur(16px);--panel-bg: rgba(23, 23, 23, .6)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background-color:var(--bg-color);color:var(--text-main);min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{font-family:Montserrat,sans-serif;font-weight:700;color:#fff;line-height:1.3;letter-spacing:.03em}.glass-panel{background:var(--bg-card);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:16px;box-shadow:0 8px 32px #0006}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff1f;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#fff3}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .35s ease-out forwards}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 22px;border-radius:14px;font-weight:600;font-size:.9rem;font-family:Inter,sans-serif;letter-spacing:.02em;cursor:pointer;transition:all .2s ease;border:1px solid rgba(255,255,255,.08);outline:none;text-transform:none;box-shadow:inset 0 1px #ffffff05}.btn-primary{background:linear-gradient(135deg,#dc2626f5,#b91c1cf0);color:#fff;border-color:#f8717147;box-shadow:inset 0 1px #ffffff1a,0 10px 24px 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24px;display:flex;align-items:center;justify-content:space-between;height:64px}.header-actions{display:flex;align-items:center;gap:16px}.external-nav{display:flex;align-items:center;gap:8px}.header-link{font-size:.82rem;font-weight:500;color:#a3a3a3;text-decoration:none;transition:all .15s ease;border-radius:6px;padding:8px 10px}.header-link:hover{color:#fff;background:#26262680}.tab-active,.tab-inactive{padding:8px 16px;font-size:.82rem;font-weight:500;font-family:inherit;border-radius:6px;border:none;cursor:pointer;transition:all .15s ease}.tab-active{background:#262626;color:#fff;box-shadow:0 1px 3px #0000004d}.tab-inactive{background:transparent;color:#a3a3a3}.tab-inactive:hover{color:#fff;background:#26262680}.app-main{flex:1;padding:40px 32px 56px;max-width:1680px;margin:0 auto;width:100%}.section-heading{font-family:Montserrat,sans-serif;font-size:1.6rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:#fff;margin-bottom:6px}.section-heading-bar{width:48px;height:3px;background:var(--primary);border-radius:2px;margin-bottom:28px}.calculator-shell{width:100%;max-width:none}.calculator-hero{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:22px}.calculator-hero-copy{flex:1 1 720px}.calculator-toolbar-card{margin-bottom:24px;padding:18px 20px;background:linear-gradient(135deg,#171717e0,#101010c7)}.calculator-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.calculator-layout{display:grid;grid-template-columns:minmax(250px,300px) minmax(0,1fr);gap:24px;align-items:start}.calculator-sidebar{position:sticky;top:92px;padding:20px 18px;background:linear-gradient(180deg,#191919f0,#111c)}.calculator-sidebar-eyebrow{font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#f87171;margin-bottom:10px}.calculator-sidebar-title{font-size:1.18rem;font-weight:700;letter-spacing:.02em;margin-bottom:8px}.calculator-sidebar-copy{font-size:.84rem;line-height:1.55;color:#a3a3a3;margin-bottom:18px}.calculator-sidebar-list{display:grid;grid-template-columns:1fr;gap:10px}.calculator-family-button{width:100%;padding:14px 16px;border-radius:14px;cursor:pointer;font-family:inherit;transition:all .18s ease;text-align:left;background:#262626ad;border:1px solid rgba(255,255,255,.08);color:#a3a3a3;box-shadow:inset 0 1px #ffffff05}.calculator-family-button:hover{border-color:#ffffff29;background:#343434c7;color:#fff;transform:translate(2px)}.calculator-family-button.is-active{background:linear-gradient(135deg,#7f1d1d7a,#dc262629);border-color:#f8717180;color:#fff;box-shadow:0 12px 32px #7f1d1d38}.calculator-family-label{font-weight:700;font-size:.95rem;line-height:1.2}.calculator-family-sub{font-size:.72rem;line-height:1.45;margin-top:4px;color:#6b7280}.calculator-family-button.is-active .calculator-family-sub{color:#fca5a5}.calculator-stage{min-width:0}.calculator-stage>.animate-fade-in,.calculator-stage>div{width:100%}@media(max-width:1200px){.calculator-layout{grid-template-columns:1fr}.calculator-sidebar{position:static}.calculator-sidebar-list{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}}@media(max-width:900px){.header-inner{min-height:64px;height:auto;padding:10px 12px;flex-wrap:wrap}.header-actions{width:100%;justify-content:space-between;gap:8px}.header-link{font-size:.78rem;padding:7px 9px}.tab-active,.tab-inactive{padding:7px 10px;font-size:.78rem}.app-main{padding:24px 12px 40px}.calculator-toolbar-card{padding:16px}.calculator-family-button:hover{transform:none}}@media(max-width:720px){.calculator-sidebar-list{grid-template-columns:1fr}.calculator-hero{margin-bottom:18px}}