:root{--bg:#f8fafc;--card:#fff;--ink:#111827;--muted:#667085;--line:#e5eaf0;--blue:#2563eb;--soft:#eff6ff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}.shell{width:min(1080px,100% - 40px);margin-inline:auto}.header{border-bottom:1px solid var(--line);z-index:5;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffffeb;position:sticky;top:0}.nav{justify-content:space-between;align-items:center;height:74px;display:flex}.brand{letter-spacing:-1.2px;align-items:center;gap:9px;font-size:25px;font-weight:800;display:flex}.logo{background:var(--blue);color:#fff;border-radius:12px;justify-content:center;align-items:center;width:38px;height:38px;font-size:20px;display:inline-flex}.dot{color:var(--blue);margin-left:-9px}.nav nav{color:#48546b;gap:24px;font-size:14px;font-weight:600;display:flex}.nav nav a:hover,.breadcrumbs a:hover{color:var(--blue)}.hero{text-align:center;max-width:690px;margin:0 auto;padding:96px 0 72px}.eyebrow,.category{letter-spacing:1.3px;color:var(--blue);font-size:11px;font-weight:800}.hero h1{letter-spacing:-3px;margin:22px 0;font-size:clamp(46px,7vw,72px);line-height:1.09}.hero h1 span{color:var(--blue)}.hero p{color:var(--muted);max-width:540px;margin:0 auto 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#bdd0ec;border-radius:12px;flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:20px;padding:20px;font-size:14px;font-weight:700;display:flex}.upload input{max-width:100%;font-size:13px}.check{color:#475467;align-items:center;gap:9px;margin:8px 0 20px;font-size:13px;display:flex}.primary{background:var(--blue);color:#fff;border:none;border-radius:11px;min-height:48px;padding:14px 20px;font-weight:700}.primary:hover{background:#1d4ed8}.error{color:#b91c1c;font-size:13px}@media (max-width:700px){.shell{width:min(100% - 28px,1080px)}.nav{height:65px}.nav nav{gap:12px;font-size:12px}.hero{padding:67px 0 52px}.hero h1{letter-spacing:-2px}.hero p{font-size:15px}.toolgrid{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.tile{min-height:200px;padding:16px}.tile h3{font-size:15px}.tile p{font-size:12px}.tile-icon{width:42px;height:42px}.workspace{padding:18px}.toolheading{align-items:flex-start}.toolpage{padding-top:18px}.breadcrumbs{margin-bottom:25px}.formgrid{gap:12px}.footerin{flex-direction:column;align-items:flex-start}}@media (max-width:440px){.toolgrid{grid-template-columns:1fr}.tile{min-height:0}.formgrid{grid-template-columns:1fr}.hero h1{font-size:44px}.results{grid-template-columns:1fr}.result-large{grid-column:auto}.app-header span{display:none}.hero{padding:44px 0 34px}.hero h1{margin:18px 0;font-size:clamp(34px,10vw,40px)}.hero p{margin-bottom:24px}.search{height:56px;padding-inline:16px}.section-head{margin-bottom:16px}.catalog{padding-bottom:44px}.catalog .tile .category{margin-top:10px}.catalog .tile h3{margin:6px 0}.catalog .tile-arrow{margin-top:12px}.catalog .tile-icon{width:36px;height:36px}.info{margin-bottom:48px;padding:18px}}.editorial .instructions{margin:18px 0 24px;padding-left:22px;font-size:14px}.editorial .instructions li{margin:9px 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summary:focus-visible{outline:2px solid var(--blue);outline-offset:4px;border-radius:4px}.editorial .faq-item p{padding:0 0 18px}.support a{color:var(--blue);font-weight:700}@media (max-width:440px){.worked-example{padding:18px}.example-results{grid-template-columns:1fr}.editorial .formulas{padding:14px 16px}}
