:root{--ink-950:#12110f;--ink-900:#201515;--ink-800:#2b2a26;--ink-700:#3d3b35;--ink-600:#55524a;--ink-500:#6b6860;--ink-400:#8f8c83;--ink-300:#bdbab1;--ink-200:#dedbd3;--ink-150:#e7e4dd;--ink-100:#edebe5;--ink-50:#f6f5f1;--paper:#fbfaf7;--white:#fff;--moss-900:#07402e;--moss-700:#0b5e43;--moss-600:#0e7a56;--moss-500:#14966a;--moss-300:#7ccba7;--moss-100:#d9f0e5;--moss-50:#eef8f3;--ember-700:#9a3412;--ember-100:#fbe3d3;--ember-50:#fdf2ea;--harbor-700:#1d4e89;--harbor-600:#2563a8;--harbor-100:#dce8f5;--harbor-50:#eef4fa;--saffron-700:#8a5a0b;--saffron-500:#d69a1c;--saffron-100:#f8eacb;--brick-700:#962b1e;--brick-600:#c2412d;--brick-100:#f6dcd6;--tint-sage:#d6e5d8;--tint-mist:#d5e1e8;--tint-sand:#efe3cc;--bg-canvas:var(--paper);--bg-surface:var(--white);--bg-subtle:var(--ink-50);--bg-muted:var(--ink-100);--fg-1:var(--ink-900);--fg-2:var(--ink-600);--fg-3:var(--ink-500);--fg-brand:var(--moss-700);--fg-link:var(--harbor-600);--border-1:var(--ink-200);--border-2:var(--ink-300);--font-display:"Onest", "Inter", system-ui, sans-serif;--font-body:"Inter", system-ui, ui-sans-serif, sans-serif;--fs-h1-home:clamp(36px, 5.4vw, 56px);--fs-h1-page:clamp(30px, 4vw, 40px);--fs-h2:clamp(26px, 3vw, 32px);--fs-h3:20px;--fs-lead:18px;--fs-body:16px;--fs-ui:14px;--fs-label:13px;--radius-sm:6px;--radius-control:8px;--radius-card:10px;--radius-xl:12px;--radius-pill:999px;--shadow-md:0 6px 16px -4px #1c1b181a, 0 2px 4px #1c1b180a;--ring-focus:0 0 0 3px #14966a47;--ease-out:cubic-bezier(.2, .7, .2, 1);--container:1200px;--gutter:24px;--section-y:80px}*,:before,:after{box-sizing:border-box}html,body{margin:0}html{-webkit-text-size-adjust:100%}body{background:var(--bg-canvas);color:var(--fg-1);font-family:var(--font-body);font-size:var(--fs-body);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;line-height:1.5}img,svg{max-width:100%;display:block}h1,h2,h3,h4{font-family:var(--font-display);letter-spacing:0;color:var(--fg-1);margin:0}h1{font-weight:700;font-size:var(--fs-h1-page);line-height:1.1}h2{font-weight:700;font-size:var(--fs-h2);line-height:1.15}h3{font-weight:600;font-size:var(--fs-h3);line-height:1.25}p{margin:0}a{color:var(--fg-link);text-underline-offset:2px;font-weight:600;text-decoration:none}a:hover{color:var(--harbor-700);text-decoration:underline}:focus-visible{box-shadow:var(--ring-focus);border-radius:4px;outline:none}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.container{width:100%;max-width:var(--container);padding:0 var(--gutter);margin:0 auto}.container-md{max-width:800px}@media (width<=640px){:root{--gutter:16px;--section-y:56px}}.site-header{z-index:20;-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border-1);background:#fbfaf7e6;position:sticky;top:0}.site-header .bar{align-items:center;gap:24px;height:64px;display:flex}.brand{color:var(--fg-1);font-family:var(--font-display);letter-spacing:-.03em;white-space:nowrap;align-items:center;gap:10px;font-size:19px;font-weight:700;display:flex}.brand:hover{color:var(--fg-1);text-decoration:none}.brand img{width:auto;height:26px}@media (width<=400px){.brand img{height:20px}}.nav{gap:2px;margin-left:auto;display:flex}.nav a{color:var(--fg-1);border-radius:var(--radius-control);white-space:nowrap;padding:6px 10px;font-size:15px;font-weight:500}.nav a:hover{background:var(--ink-50);color:var(--fg-1);text-decoration:none}.nav a[aria-current=page]{color:var(--moss-700);background:var(--moss-50)}.menu{margin-left:auto;display:none}.menu summary{cursor:pointer;border:1px solid var(--border-2);border-radius:var(--radius-control);background:var(--white);align-items:center;gap:6px;padding:8px 12px;font-size:15px;font-weight:600;list-style:none;display:flex}.menu summary::-webkit-details-marker{display:none}.menu[open] summary{background:var(--ink-100)}.menu-panel{background:var(--paper);border-bottom:1px solid var(--border-1);padding:8px var(--gutter) 16px;box-shadow:var(--shadow-md);position:absolute;top:64px;left:0;right:0}.menu-panel a{color:var(--fg-1);border-bottom:1px solid var(--ink-100);padding:12px 0;font-size:16px;display:block}.menu-panel a:last-child{border-bottom:0}@media (width<=1080px){.nav{display:none}.menu{display:block}}.breadcrumb{font-size:var(--fs-label);color:var(--fg-3);flex-wrap:wrap;gap:6px;margin-bottom:16px;display:flex}.breadcrumb a{color:var(--fg-2);font-weight:500}.breadcrumb span[aria-hidden]{color:var(--ink-300)}.hero{padding:48px 0 32px}.hero h1{max-width:880px}.hero--home h1{font-size:var(--fs-h1-home);line-height:1.04}.lead{font-size:var(--fs-lead);color:var(--fg-2);max-width:720px;margin-top:16px;line-height:1.55}.meta-line{font-size:var(--fs-label);color:var(--fg-3);margin-top:16px}.highlight{color:var(--moss-600)}.workspace{grid-template-columns:minmax(0,1fr) minmax(0,440px);align-items:start;gap:24px;padding-bottom:56px;display:grid}@media (width<=960px){.workspace{grid-template-columns:1fr}}.card{background:var(--white);border:1px solid var(--border-1);border-radius:var(--radius-card);padding:24px}.card h2,.card .card-title{margin-bottom:4px;font-size:20px;font-weight:600;line-height:1.25}.card-sub{font-size:var(--fs-ui);color:var(--fg-2);margin-bottom:20px}.result{position:sticky;top:88px}@media (width<=960px){.result{position:static}}.fieldset{border:0;margin:0;padding:0}.fieldset+.fieldset{border-top:1px solid var(--ink-100);margin-top:24px;padding-top:24px}.fieldset legend{float:left;width:100%;font-family:var(--font-display);margin-bottom:12px;padding:0;font-size:16px;font-weight:600}.fieldset legend+*{clear:both}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}@media (width<=560px){.grid-2,.grid-3{grid-template-columns:1fr}}.field{flex-direction:column;gap:6px;min-width:0;display:flex}.field label,.field .label{font-size:var(--fs-label);color:var(--fg-2);font-weight:600;line-height:1.3}.field .hint{color:var(--fg-3);font-size:12px;line-height:1.4}.input-wrap{align-items:center;display:flex;position:relative}.input-wrap .prefix,.input-wrap .suffix{color:var(--fg-3);pointer-events:none;font-size:15px;position:absolute}.input-wrap .prefix{left:12px}.input-wrap .suffix{right:12px}.input,.select{width:100%;height:44px;font:inherit;color:var(--fg-1);background:var(--white);border:1px solid var(--border-2);border-radius:var(--radius-control);transition:border-color .15s var(--ease-out), box-shadow .15s var(--ease-out);padding:0 12px;font-size:16px}.input-wrap .prefix+.input{padding-left:26px}.input-wrap .input:has(+.suffix){padding-right:56px}.input:hover,.select:hover{border-color:var(--ink-400)}.input:focus,.select:focus{border-color:var(--moss-500);box-shadow:var(--ring-focus);outline:none}.select{-webkit-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2355524A' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat;padding-right:36px}.segmented{flex-wrap:wrap;gap:6px;display:flex}.segmented label{position:relative}.segmented input{opacity:0;pointer-events:none;position:absolute}.segmented span{border:1px solid var(--border-2);border-radius:var(--radius-control);background:var(--white);cursor:pointer;height:40px;transition:all .15s var(--ease-out);align-items:center;padding:0 14px;font-size:15px;font-weight:500;display:inline-flex}.segmented span:hover{background:var(--ink-50)}.segmented input:checked+span{border-color:var(--moss-600);background:var(--moss-50);color:var(--moss-700);box-shadow:inset 0 0 0 1px var(--moss-600);font-weight:600}.segmented input:focus-visible+span{box-shadow:var(--ring-focus)}.check{cursor:pointer;align-items:flex-start;gap:10px;font-size:15px;display:flex}.check input{width:18px;height:18px;accent-color:var(--moss-600);margin:2px 0 0}.figure-label{font-size:var(--fs-label);color:var(--fg-2);font-weight:600}.figure{font-family:var(--font-display);color:var(--fg-1);margin:6px 0;font-size:44px;font-weight:700;line-height:1.05}.figure--sm{font-size:32px}.figure-sub{font-size:var(--fs-ui);color:var(--fg-2)}.result-block{border-top:1px solid var(--ink-100);margin-top:20px;padding-top:20px}.result-block h3{font-size:15px;font-family:var(--font-body);margin-bottom:12px;font-weight:600}.bars{gap:10px;display:grid}.bar-row{font-size:var(--fs-ui);grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;display:grid}.bar-row .bar{background:var(--ink-100);border-radius:var(--radius-pill);grid-column:1/-1;height:8px;overflow:hidden}.bar-row .bar i{background:var(--moss-600);border-radius:var(--radius-pill);height:100%;transition:width .28s var(--ease-out);display:block}.bar-row.is-minus .bar i{background:var(--ink-400)}.bar-row .v{white-space:nowrap;font-weight:600}.note{font-size:var(--fs-ui);color:var(--fg-2);line-height:1.5}.pill{border-radius:var(--radius-pill);background:var(--moss-50);color:var(--moss-700);align-items:center;gap:6px;padding:3px 10px;font-size:12px;font-weight:600;display:inline-flex}.pill--warn{background:var(--saffron-100);color:var(--saffron-700)}.callout{background:var(--moss-50);border:1px solid var(--moss-100);border-radius:var(--radius-card);font-size:var(--fs-ui);padding:16px;line-height:1.5}.callout--info{background:var(--harbor-50);border-color:var(--harbor-100)}.callout--warn{background:var(--saffron-100);border-color:#efd9a6}.small-print{color:var(--fg-3);margin-top:16px;font-size:12px;line-height:1.5}.btn{border-radius:var(--radius-control);height:44px;font:inherit;cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:6px;padding:0 20px;font-size:15px;font-weight:600;transition:all .2s;display:inline-flex}.btn:active{transform:translateY(1px)}.btn--primary{background:var(--moss-600);color:var(--white)}.btn--primary:hover{background:var(--moss-700);color:var(--white);text-decoration:none}.btn--secondary{border-color:var(--ink-900);color:var(--ink-900);background:0 0}.btn--secondary:hover{background:var(--ink-50);color:var(--ink-900);text-decoration:none}.btn--sm{height:34px;padding:0 12px;font-size:14px}.section{padding:var(--section-y) 0}.section--subtle{background:var(--ink-50);border-top:1px solid var(--border-1);border-bottom:1px solid var(--border-1)}.section-head{max-width:760px;margin-bottom:32px}.section-head p{color:var(--fg-2);margin-top:12px;font-size:17px}.prose{max-width:760px;color:var(--ink-800);font-size:17px;line-height:1.65}.prose>*+*{margin-top:16px}.prose h2{margin-top:48px}.prose h3{margin-top:32px}.prose h2+*,.prose h3+*{margin-top:12px}.prose ul,.prose ol{padding-left:22px}.prose li+li{margin-top:6px}.prose strong{color:var(--fg-1)}.formula{background:var(--white);border:1px solid var(--border-1);border-radius:var(--radius-control);color:var(--ink-800);white-space:pre;padding:14px 16px;font-family:JetBrains Mono,ui-monospace,Menlo,monospace;font-size:14px;line-height:1.7;overflow-x:auto}.table-wrap{border:1px solid var(--border-1);border-radius:var(--radius-card);background:var(--white);overflow-x:auto}table.data{border-collapse:collapse;width:100%;font-size:var(--fs-ui)}table.data th{background:var(--ink-50);text-align:left;font-size:var(--fs-label);color:var(--fg-2);border-bottom:1px solid var(--border-1);white-space:nowrap;padding:10px 14px;font-weight:600}table.data td{border-bottom:1px solid var(--ink-100);vertical-align:top;padding:11px 14px}table.data tr:last-child td{border-bottom:0}table.data td.num,table.data th.num{text-align:right;white-space:nowrap}@media (width<=560px){table.data th,table.data td{padding:10px}}.table-note{color:var(--fg-3);max-width:900px;margin-top:10px;font-size:12px;line-height:1.5}table.data caption{caption-side:bottom;text-align:left;color:var(--fg-3);border-top:1px solid var(--ink-100);padding:10px 14px;font-size:12px}.faq{border-top:1px solid var(--border-1);max-width:800px}.faq details{border-bottom:1px solid var(--border-1)}.faq summary{cursor:pointer;font-family:var(--font-display);justify-content:space-between;gap:16px;padding:18px 0;font-size:18px;font-weight:600;line-height:1.35;list-style:none;display:flex}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"";background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23201515' stroke-width='1.75' stroke-linecap='round'%3E%3Cpath d='M5 12h14M12 5v14'/%3E%3C/svg%3E") 50% no-repeat;flex:none;width:20px;height:20px;margin-top:2px}.faq details[open] summary:after{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23201515' stroke-width='1.75' stroke-linecap='round'%3E%3Cpath d='M5 12h14'/%3E%3C/svg%3E")}.faq .answer{color:var(--ink-800);max-width:720px;padding:0 0 20px;font-size:16px;line-height:1.65}.faq .answer>*+*{margin-top:12px}.link-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;display:grid}.link-card{background:var(--white);border:1px solid var(--border-1);border-radius:var(--radius-card);color:var(--fg-1);transition:box-shadow .2s var(--ease-out), border-color .2s var(--ease-out);flex-direction:column;gap:10px;padding:20px;font-weight:400;display:flex}.link-card:hover{color:var(--fg-1);border-color:var(--ink-300);box-shadow:var(--shadow-md);text-decoration:none}.link-card .tile{border-radius:var(--radius-sm);background:var(--moss-100);width:40px;height:40px;color:var(--moss-700);place-items:center;display:grid}.link-card .tile svg{width:20px;height:20px}.link-card strong{font-family:var(--font-display);font-size:18px;font-weight:600;line-height:1.25}.link-card span{font-size:var(--fs-ui);color:var(--fg-2);line-height:1.5}.sources{color:var(--fg-2);max-width:900px;padding-left:20px;font-size:13px;line-height:1.55}.sources li+li{margin-top:6px}.sources a{word-break:break-word;font-weight:500}.sources-more summary{cursor:pointer;color:var(--fg-link);margin-bottom:12px;font-size:14px;font-weight:600}sup.cite a{padding:0 1px;font-size:11px;font-weight:600}sup.cite{font-size:11px;line-height:0}.cite-sep{color:var(--fg-3);font-size:11px}.site-footer{background:var(--ink-50);margin-top:0;padding:56px 0 32px}.footer-grid{grid-template-columns:1.4fr repeat(3,1fr);gap:32px;display:grid}@media (width<=800px){.footer-grid{grid-template-columns:1fr 1fr}}@media (width<=480px){.footer-grid{grid-template-columns:1fr}}.footer-grid h2{font-family:var(--font-body);color:var(--fg-3);margin-bottom:10px;font-size:13px;font-weight:600}.footer-grid ul{justify-items:start;gap:10px;margin:0;padding:0;list-style:none;display:grid}.footer-grid a{color:var(--fg-1);font-size:14px;font-weight:400}.footer-tag{color:var(--fg-2);max-width:280px;margin-top:12px;font-size:14px;line-height:1.5}.disclaimer{color:var(--fg-2);max-width:860px;margin-top:40px;font-size:13px;line-height:1.6}.footer-bottom{border-top:1px solid var(--border-1);color:var(--fg-3);flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:24px;padding-top:20px;font-size:13px;display:flex}.footer-bottom nav{gap:20px;display:flex}.footer-bottom a{color:var(--fg-2);font-weight:400}@media (prefers-reduced-motion:reduce){*,:before,:after{transition:none!important;animation:none!important}}