@import url("https://fonts.googleapis.com/css2?family=DM+Mono:ital,wght@0,400;0,500;1,400&family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=Space+Grotesk:wght@500;600;700;800&display=swap");:root{--bg-primary:#07090e;--bg-secondary:#0d111a;--bg-card:#121824;--bg-card-hover:#182030;--bg-input:#090d14;--bg-subtle:#1c2536;--accent-teal:#00e5a3;--accent-teal-rgb:0,229,163;--accent-teal-glow:rgba(0,229,163,.16);--accent-teal-dark:#00b882;--accent-ochre:#ffb020;--accent-ochre-rgb:255,176,32;--accent-ochre-glow:rgba(255,176,32,.16);--accent-ochre-dark:#d9910d;--accent-rose:#f36;--accent-indigo:#705df2;--accent-cyan:#00e5ff;--text-primary:#f8fafc;--text-secondary:#9db2c9;--text-muted:#62768e;--border-subtle:hsla(0,0%,100%,.08);--border-focus:rgba(0,229,163,.6);--border-active:rgba(255,176,32,.5);--font-heading:"Space Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--font-body:"DM Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--font-mono:"DM Mono",SFMono-Regular,Menlo,Monaco,Consolas,monospace;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-full:9999px;--shadow-sm:0 2px 4px rgba(0,0,0,.35);--shadow-md:0 6px 18px rgba(0,0,0,.45);--shadow-lg:0 16px 40px rgba(0,0,0,.6);--shadow-teal:0 8px 24px rgba(0,229,163,.28);--shadow-ochre:0 8px 24px rgba(255,176,32,.28);--transition-fast:150ms cubic-bezier(0.4,0,0.2,1);--transition-smooth:250ms cubic-bezier(0.16,1,0.3,1)}*{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-body);background-color:var(--bg-primary);color:var(--text-primary);color-scheme:dark;scroll-behavior:smooth;-webkit-font-smoothing:antialiased}body{min-height:100vh;display:flex;flex-direction:column;line-height:1.6;background:radial-gradient(ellipse 70% 45% at 50% -10%,rgba(0,229,163,.08) 0,transparent 60%),radial-gradient(ellipse 50% 35% at 90% 15%,rgba(255,176,32,.05) 0,transparent 50%),radial-gradient(ellipse 60% 40% at 10% 70%,rgba(112,93,242,.04) 0,transparent 55%),#07090e;background-attachment:fixed}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);color:var(--text-primary);font-weight:700;letter-spacing:-.025em;line-height:1.25}p{color:var(--text-secondary);font-size:1rem}a{color:inherit;text-decoration:none;transition:color var(--transition-fast)}button{font-family:inherit;cursor:pointer;border:none;background:none}input,select,textarea{font-family:inherit;color:var(--text-primary)}.mono-num{font-family:var(--font-mono);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.container{max-width:1240px}.container,.container-narrow{margin:0 auto;padding:0 1.5rem;width:100%}.container-narrow{max-width:960px}.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:50;background:rgba(7,9,14,.88);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-subtle);transition:all var(--transition-fast)}.header-inner{justify-content:space-between;height:4.25rem;gap:1.5rem}.brand-logo,.header-inner{display:flex;align-items:center}.brand-logo{gap:.75rem;font-family:var(--font-heading);font-weight:800;font-size:1.25rem;color:var(--text-primary);letter-spacing:-.02em}.brand-icon{width:2.25rem;height:2.25rem;background:linear-gradient(135deg,#00e5a3,#00b882);border-radius:8px;justify-content:center;color:#07090e;box-shadow:var(--shadow-teal)}.brand-icon,.nav-links{display:flex;align-items:center}.nav-links{gap:1.25rem;list-style:none}.nav-link{color:var(--text-secondary);font-size:.9375rem;font-weight:500;padding:.4rem .6rem;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.nav-link.active,.nav-link:hover{color:var(--text-primary);background:var(--bg-card)}.preferences-bar{display:flex;align-items:center;gap:.75rem}.pref-select-wrap{display:flex;align-items:center;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-full);padding:.35rem .75rem;gap:.5rem;font-size:.875rem;transition:border-color var(--transition-fast)}.pref-select-wrap:hover{border-color:var(--accent-teal)}.pref-select-wrap select{background:transparent;border:none;outline:none;font-weight:600;cursor:pointer}.pref-select-wrap select option{background-color:var(--bg-card);color:var(--text-primary)}.unit-toggle-btn{display:flex;align-items:center;gap:.4rem;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-full);padding:.35rem .75rem;font-size:.8125rem;font-weight:600;color:var(--text-secondary);transition:all var(--transition-fast)}.unit-toggle-btn:hover{color:var(--text-primary);border-color:var(--accent-teal)}.unit-toggle-btn.active{color:var(--accent-teal);border-color:var(--accent-teal);background:var(--accent-teal-glow)}.breadcrumbs{display:flex;align-items:center;gap:.5rem;font-size:.875rem;color:var(--text-muted);margin-bottom:1.5rem;flex-wrap:wrap}.breadcrumbs a{color:var(--text-secondary)}.breadcrumbs a:hover{color:var(--accent-teal)}.card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.75rem;box-shadow:inset 0 1px 0 0 hsla(0,0%,100%,.05),var(--shadow-md);transition:transform var(--transition-smooth),border-color var(--transition-smooth),box-shadow var(--transition-smooth)}.card:hover{border-color:rgba(0,229,163,.3);box-shadow:inset 0 1px 0 0 hsla(0,0%,100%,.08),0 12px 32px rgba(0,0,0,.5),0 0 24px rgba(0,229,163,.08);transform:translateY(-2px)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:var(--font-heading);font-weight:600;font-size:.9375rem;padding:.65rem 1.25rem;border-radius:var(--radius-md);transition:all var(--transition-fast);cursor:pointer;text-decoration:none}.btn-primary{background:linear-gradient(135deg,#00e5a3,#00b882);color:#07090e;box-shadow:var(--shadow-teal);font-weight:700}.btn-primary:hover{background:linear-gradient(135deg,#1affb5,#00cc91);box-shadow:0 10px 28px rgba(0,229,163,.35);transform:translateY(-1px)}.btn-outline{background:transparent;color:var(--text-primary);border:1px solid var(--border-subtle)}.btn-outline:hover{border-color:var(--accent-teal);background:var(--accent-teal-glow);color:var(--accent-teal)}.form-group{margin-bottom:1.25rem}.form-label{justify-content:space-between;font-size:.875rem;font-weight:600;color:var(--text-secondary);margin-bottom:.5rem}.form-input-wrap,.form-label{display:flex;align-items:center}.form-input-wrap{position:relative;background:var(--bg-input);border:1px solid var(--border-subtle);border-radius:var(--radius-md);transition:all var(--transition-fast)}.form-input-wrap:focus-within{border-color:var(--accent-teal);box-shadow:0 0 0 3px var(--accent-teal-glow)}.input-prefix,.input-suffix{padding:0 .875rem;color:var(--text-muted);font-family:var(--font-mono);font-size:.9375rem;-webkit-user-select:none;-moz-user-select:none;user-select:none}.form-input{width:100%;background:transparent;border:none;outline:none;padding:.75rem .875rem;font-size:1.0625rem;font-family:var(--font-mono);font-weight:600;color:var(--text-primary)}.form-range{width:100%;margin-top:.5rem;height:6px;border-radius:var(--radius-full);-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--bg-subtle);outline:none;cursor:pointer}.form-range::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--accent-teal);cursor:pointer;border:2px solid #fff;box-shadow:0 2px 6px rgba(0,0,0,.4);-webkit-transition:transform var(--transition-fast);transition:transform var(--transition-fast)}.form-range::-webkit-slider-thumb:hover{transform:scale(1.15)}.badge{display:inline-flex;align-items:center;gap:.35rem;padding:.25rem .65rem;border-radius:var(--radius-full);font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em}.badge-teal{background:var(--accent-teal-glow);color:var(--accent-teal);border:1px solid rgba(0,229,163,.35)}.badge-ochre{background:var(--accent-ochre-glow);color:var(--accent-ochre);border:1px solid rgba(255,176,32,.35)}.result-hero-box{background:linear-gradient(135deg,rgba(0,229,163,.12),rgba(18,24,36,.95));border:1px solid rgba(0,229,163,.35);border-radius:var(--radius-lg);padding:1.75rem;text-align:center;margin-bottom:1.5rem;position:relative;overflow:hidden;box-shadow:inset 0 1px 0 0 hsla(0,0%,100%,.08),0 12px 30px rgba(0,229,163,.1)}.result-hero-val{font-family:var(--font-heading);font-size:2.75rem;font-weight:800;color:#fff;letter-spacing:-.03em;margin:.35rem 0;line-height:1.1;text-shadow:0 0 25px rgba(0,229,163,.25)}.result-hero-label{font-size:.875rem;text-transform:uppercase;letter-spacing:.08em;color:var(--accent-teal);font-weight:700}.metrics-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));grid-gap:.875rem;gap:.875rem;margin-bottom:1.5rem}.metric-pill{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:.875rem}.metric-pill-label{font-size:.75rem;color:var(--text-muted);margin-bottom:.25rem;display:flex;align-items:center;gap:.35rem}.metric-pill-val{font-family:var(--font-mono);font-size:1.125rem;font-weight:700;color:var(--text-primary)}.table-container{overflow-x:auto;border:1px solid var(--border-subtle);border-radius:var(--radius-md);background:var(--bg-card)}.data-table{width:100%;border-collapse:collapse;text-align:left;font-size:.875rem}.data-table th{background:var(--bg-subtle);font-weight:600;color:var(--text-secondary)}.data-table td,.data-table th{padding:.75rem 1rem;border-bottom:1px solid var(--border-subtle);white-space:nowrap}.data-table td{color:var(--text-primary);font-family:var(--font-mono)}.data-table tr:hover td{background:hsla(0,0%,100%,.02)}.seo-content-section{margin-top:4rem;padding-top:3rem;border-top:1px solid var(--border-subtle)}.seo-prose{color:#cbd5e1;font-size:1.0625rem;line-height:1.8}.seo-prose h2{font-size:1.875rem;margin:2.5rem 0 1rem;color:#fff}.seo-prose h3{font-size:1.35rem;margin:1.75rem 0 .75rem;color:#e2e8f0}.seo-prose p{margin-bottom:1.25rem;color:#94a3b8}.seo-prose ol,.seo-prose ul{margin-bottom:1.5rem;padding-left:1.5rem;color:#94a3b8}.seo-prose li{margin-bottom:.5rem}.formula-card{background:var(--bg-secondary);border-left:4px solid var(--accent-teal);border-radius:0 var(--radius-md) var(--radius-md) 0;font-family:var(--font-mono)}.example-box,.formula-card{padding:1.5rem;margin:1.5rem 0}.example-box{background:var(--accent-ochre-glow);border:1px solid rgba(255,176,32,.25);border-radius:var(--radius-md)}.faq-item{border:1px solid var(--border-subtle);border-radius:var(--radius-md);margin-bottom:.875rem;background:var(--bg-card);overflow:hidden}.faq-trigger{width:100%;display:flex;justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;text-align:left;font-family:var(--font-heading);font-weight:600;font-size:1.0625rem;color:var(--text-primary);background:none;cursor:pointer;transition:color var(--transition-fast)}.faq-trigger:hover{color:var(--accent-teal)}.faq-body{padding:0 1.5rem 1.25rem;color:var(--text-secondary);font-size:.95rem;line-height:1.7}.site-footer{margin-top:auto;background:#050609;border-top:1px solid var(--border-subtle);padding:4rem 0 2rem}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:#1c2536;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--accent-teal)}@media (max-width:900px){.header-inner{height:auto;padding:1rem 0;flex-wrap:wrap}.nav-links{order:3;width:100%;overflow-x:auto;padding-bottom:.5rem}.result-hero-val{font-size:2.25rem}}