@import "https://fonts.googleapis.com/css2?family=Source+Sans+3:wght@400;500;600&family=Space+Grotesk:wght@500;600;700&display=swap";
:root{--ink-900:#1b2a3c;--ink-700:#2f435b;--ink-500:#546579;--ink-400:#6a7a90;--blue-700:#1f4f8a;--blue-600:#2961b0;--blue-500:#3573cf;--blue-200:#cfe0f5;--blue-100:#e6effb;--surface:#fff;--surface-soft:#f3f6fb;--surface-muted:#eef2f7;--accent:#2e7a6c;--shadow:0 18px 40px #11223b14;--radius-lg:18px;--radius-md:14px;--radius-sm:10px}*{box-sizing:border-box}body{color:var(--ink-700);background:#e6e8ec;margin:0;font-family:"Source Sans 3",sans-serif}.page{background:linear-gradient(#f7f9fc 0%,#eef2f7 40%,#e6e9ef 100%);min-height:100vh;position:relative;overflow-x:hidden}.page:before,.page:after{content:"";z-index:0;background:radial-gradient(circle at 30% 30%,#3f75c238,#0000 60%);border-radius:50%;width:360px;height:360px;position:absolute}.page:before{top:-120px;right:-80px}.page:after{background:radial-gradient(circle at 30% 30%,#2e7a6c2e,#0000 60%);bottom:260px;left:-140px}main,.site-header,.site-footer{z-index:1;position:relative}.site-header{background:var(--surface);border-bottom:1px solid #dce3ee;justify-content:space-between;align-items:center;padding:22px clamp(18px,6vw,64px);display:flex;box-shadow:0 12px 30px #11223b0a}.brand{color:var(--blue-700);align-items:center;gap:12px;font-family:Space Grotesk,sans-serif;font-size:1.1rem;font-weight:600;display:flex}.logo{background:#fff;border:1px solid #d7e0ef;border-radius:12px;place-items:center;width:42px;height:42px;display:grid;box-shadow:0 8px 16px #1f4f8a2e}.logo img{width:32px;height:32px}.site-nav{align-items:center;gap:20px;display:flex}.site-nav a{color:var(--ink-500);font-weight:500;text-decoration:none;transition:color .2s}.site-nav a:hover{color:var(--blue-700)}.nav-muted{opacity:.7}.menu-toggle{background:var(--surface);color:var(--ink-700);border:1px solid #d6deea;border-radius:999px;padding:8px 14px;font-weight:600;display:none}.btn{cursor:pointer;border:none;border-radius:12px;padding:12px 22px;font-family:"Source Sans 3",sans-serif;font-weight:600}.btn .btn-label{opacity:.85;border:1px solid;border-radius:999px;margin-left:8px;padding:2px 8px;font-size:.72rem;font-weight:600;line-height:1.2;display:inline-block}.btn:disabled{opacity:.6;cursor:not-allowed}.btn.primary{background:var(--blue-700);color:#fff;box-shadow:0 12px 24px #1f4f8a33}.btn.primary:hover{background:#1b4680}.btn.ghost{background:var(--surface);color:var(--blue-700);border:1px solid #d6deea}.btn.light{color:var(--blue-700);background:#fff;border:1px solid #fff6}.hero{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));align-items:center;gap:clamp(24px,5vw,60px);padding:clamp(32px,8vw,80px) clamp(18px,6vw,80px);display:grid}.hero-content{flex-direction:column;gap:20px;display:flex}.pill{color:var(--accent);background:#2e7a6c1f;border-radius:999px;align-self:flex-start;padding:6px 14px;font-size:.9rem;font-weight:600}h1,h2,h3{color:var(--ink-900);margin:0;font-family:Space Grotesk,sans-serif}h1{font-size:clamp(2.2rem,4vw,3.4rem);line-height:1.1}.hero p{width:100%;color:var(--ink-500);margin:0;font-size:1.05rem}.search-bar{background:var(--surface);box-shadow:var(--shadow);border-radius:14px;gap:8px;padding:8px;display:flex}.search-group{gap:12px;display:grid}.search-bar input{border:none;outline:none;flex:1;padding:10px 12px;font-family:"Source Sans 3",sans-serif;font-size:1rem}.hero-metrics{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:16px;display:grid}.hero-metrics div{background:var(--surface);box-shadow:var(--shadow);border-radius:14px;padding:14px 16px}.hero-metrics strong{color:var(--ink-900);font-size:1.1rem;display:block}.hero-metrics span{color:var(--ink-500);font-size:.92rem}.hero-panel{border-radius:var(--radius-lg);box-shadow:var(--shadow);background:linear-gradient(160deg,#f9fbff,#e8f0fb);flex-direction:column;gap:18px;padding:28px;display:flex;position:relative;overflow:hidden}.hero-panel:after{content:"";background:radial-gradient(circle,#3573cf3d,#0000 70%);border-radius:50%;width:180px;height:180px;animation:12s ease-in-out infinite float;position:absolute;top:-60px;right:-40px}.panel-list{color:var(--ink-500);gap:10px;display:grid}.panel-list .dot{background:var(--accent);border-radius:50%;width:8px;height:8px;margin-right:8px;display:inline-block}.section{padding:clamp(26px,6vw,70px) clamp(18px,6vw,80px)}.section.light{background:var(--surface)}.section.soft{background:var(--surface-muted)}.section-header{flex-direction:column;gap:8px;max-width:620px;margin-bottom:30px;display:flex}.section-header.wide{width:100%;max-width:100%}.section-header p{color:var(--ink-500);margin:0}.section-summary{text-align:justify}.section-summary p{margin:0 0 16px}.section-summary p:last-child{margin-bottom:0}.grid{gap:18px;display:grid}.cards{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.category-block{gap:16px;margin-top:24px;display:grid}.category-block:first-child{margin-top:0}.category-title{color:var(--ink-900);margin:0;font-size:1.1rem}.category-block .cards{grid-template-columns:repeat(auto-fill,minmax(220px,260px));justify-content:start}.card{background:var(--surface);border-radius:var(--radius-md);border:1px solid #e1e6f0;gap:12px;padding:20px;display:grid;box-shadow:0 10px 20px #11223b0d}.card-link{color:inherit;text-decoration:none;transition:transform .2s,box-shadow .2s}.card-link:hover{transform:translateY(-2px);box-shadow:0 16px 28px #11223b1a}.card h3{font-size:1.1rem}.card p{color:var(--ink-500);margin:0}.form-card{background:var(--surface);border-radius:var(--radius-md);border:1px solid #e1e6f0;gap:16px;margin-bottom:26px;padding:24px;display:grid;box-shadow:0 12px 24px #11223b0f}.shape-list{gap:20px;display:grid}.shape-card{background:var(--surface);border-radius:var(--radius-md);border:1px solid #e1e6f0;gap:16px;padding:20px;display:grid;box-shadow:0 10px 20px #11223b0d}.shape-header{justify-content:space-between;align-items:center;gap:12px;display:flex}.total-results{margin-top:8px}.steps-content{gap:16px;display:grid}.steps-list{gap:14px;margin:0;padding-left:20px;display:grid}.steps-list>li{gap:8px;display:grid}.steps-sublist{color:var(--ink-500);gap:6px;margin:0;padding-left:18px;display:grid}.steps-formula{background:var(--surface-soft);color:var(--ink-700);border:1px dashed #d7e0ef;border-radius:10px;flex-wrap:wrap;align-items:center;gap:10px;margin:8px 0;padding:12px 14px;font-family:Space Grotesk,sans-serif;font-weight:600;display:flex}.steps-formula .formula-left{white-space:nowrap}.steps-formula .fraction-block{place-items:center;line-height:1.2;display:grid}.steps-formula .numerator{padding:0 8px 4px}.steps-formula .denominator{border-top:2px solid #b7c4d9;width:100%;padding:4px 8px 0}.steps-formula .sqrt-group{align-items:center;gap:4px;display:inline-flex}.steps-formula .sqrt-symbol{font-size:1.2em;line-height:1}.steps-citation{color:var(--ink-400);font-size:.85rem;font-style:italic}.form-section{gap:12px;display:grid}.form-section h3{color:var(--ink-900);margin:0;font-size:1.05rem}.form-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;display:grid}.form-grid.stack{grid-template-columns:1fr}.form-field{flex-direction:column;gap:6px;display:flex}.form-field label{color:var(--ink-700);font-weight:600}.form-field .unit{color:var(--ink-400);margin-left:6px;font-size:.85rem;font-weight:500}.form-field .field-definition{color:var(--ink-500);margin:0;font-size:.88rem}.form-field input{color:var(--ink-700);background:#fff;border:1px solid #d7e0ef;border-radius:10px;padding:10px 12px;font-family:"Source Sans 3",sans-serif}.form-field input:focus{outline:2px solid var(--blue-200);border-color:var(--blue-500)}.form-field select{color:var(--ink-700);background:#fff;border:1px solid #d7e0ef;border-radius:10px;padding:10px 12px;font-family:"Source Sans 3",sans-serif}.form-field select:focus{outline:2px solid var(--blue-200);border-color:var(--blue-500)}.form-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.form-note{color:var(--ink-400);margin:0;font-size:.9rem}.results{gap:18px;margin-top:10px;display:grid}.result-card{background:var(--surface-soft);border-radius:var(--radius-md);border:1px solid #e1e6f0;gap:12px;padding:18px;display:grid}.result-formula{color:var(--ink-400);margin:0;font-size:.92rem}.result-steps{color:var(--ink-500);gap:6px;margin:0;padding-left:18px;font-size:.92rem;display:grid}.result-grid{gap:10px;display:grid}.result-subgrid{border-top:1px dashed #d7e0ef;margin-top:6px;padding-top:10px}.result-row{justify-content:space-between;align-items:baseline;gap:12px;display:flex}.result-row span{color:var(--ink-500)}.result-row strong{color:var(--ink-900);font-weight:600}.search-results{gap:16px;display:grid}.search-result{background:var(--surface);border-radius:var(--radius-md);border:1px solid #e1e6f0;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:20px;padding:20px;display:flex;box-shadow:0 10px 20px #11223b0d}.search-result-title{margin:0;font-size:1.1rem}.search-result-desc{color:var(--ink-500);margin:6px 0 0}.search-result-actions{flex-wrap:wrap;gap:10px;display:flex}.search-result-status{color:var(--ink-400);padding:10px 0;font-size:.85rem;font-weight:600}.results-placeholder{color:var(--ink-500);background:#f8fafd;border:1px dashed #d7e0ef;border-radius:12px;margin-top:12px;padding:14px 16px}.icon,.feature-icon{background:var(--blue-100);width:44px;height:44px;color:var(--blue-700);border-radius:12px;place-items:center;display:grid}.icon svg,.feature-icon svg{width:24px;height:24px}.features{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.feature-card{background:var(--surface-soft);border-radius:var(--radius-md);border:1px solid #e0e7f3;gap:12px;padding:24px;display:grid}.reference-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;display:grid}.reference-card{background:var(--surface);border-radius:var(--radius-md);border:1px solid #dee6f2;gap:16px;padding:22px;display:grid;box-shadow:0 8px 18px #11223b0f}.chip-row{flex-wrap:wrap;gap:8px;display:flex}.chip{background:var(--blue-100);color:var(--blue-700);border-radius:999px;padding:6px 12px;font-size:.85rem;font-weight:600}.flow{color:var(--ink-500);gap:10px;margin:0;padding-left:18px;display:grid}.note{color:var(--ink-400);margin:0;font-size:.9rem}.audit{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.audit-card{background:var(--surface);border-radius:var(--radius-md);border:1px solid #e1e6f0;padding:20px;box-shadow:0 10px 20px #11223b0a}.soft-card{background:var(--surface-soft)}.cta{color:#fff;background:linear-gradient(130deg,#2a4c86,#1f3e6a);border-radius:20px;justify-content:space-between;align-items:center;gap:20px;margin:clamp(30px,6vw,80px) clamp(18px,6vw,80px);padding:clamp(22px,5vw,36px);display:flex;box-shadow:0 24px 50px #11223b4d}.cta-content{align-items:center;gap:18px;display:flex}.cta-icon{background:#ffffff1f;border-radius:16px;place-items:center;width:64px;height:64px;display:grid}.cta-icon svg{width:52px;height:52px}.site-footer{color:var(--ink-500);background:var(--surface);border-top:1px solid #dce3ee;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;padding:32px clamp(18px,6vw,80px) 50px;display:grid}.site-footer strong{color:var(--ink-900);font-family:Space Grotesk,sans-serif;font-size:1.05rem;display:block}.footer-title{color:var(--ink-700);margin-bottom:6px;font-weight:600;display:block}.reveal{opacity:0;animation:.8s forwards fadeUp;animation-delay:var(--delay,0s);transform:translateY(16px)}.batch-title{margin-top:28px}.print-only{display:block}.print-root{width:0;height:0;position:absolute;top:0;left:-9999px;overflow:hidden}@keyframes fadeUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(14px)}}@media (max-width:900px){.site-nav{background:var(--surface);box-shadow:var(--shadow);opacity:0;pointer-events:none;border-radius:14px;flex-direction:column;padding:16px;transition:all .2s;position:absolute;top:80px;right:18px;transform:translateY(-8px)}.site-header.nav-open .site-nav{opacity:1;pointer-events:auto;transform:translateY(0)}.menu-toggle{display:inline-flex}}@media (max-width:700px){.hero{grid-template-columns:1fr}.cta{flex-direction:column;align-items:flex-start}.search-bar{flex-direction:column}.search-bar button{width:100%}}@media (prefers-reduced-motion:reduce){.reveal,.hero-panel:after{animation:none}.reveal{opacity:1;transform:none}}@media print{body{background:#fff}body>:not(.print-root){display:none!important}.print-root,.print-only{display:block!important}.print-root{width:100%;height:auto;position:static;left:0;overflow:visible}.page{background:#fff}.page:before,.page:after{display:none}.no-print,.site-header,.site-footer{display:none!important}}