:root {
  --ink:#16324A; --muted:#536777; --paper:#FFF8E8; --white:#FFFFFF; --primary:#D9652B;
  --primary-dark:#9E3F1A; --energy:#F2C14E; --observed:#2F7D6D; --boundary:#7B4B94;
  --line:#D9CDAF; --grid:rgba(22,50,74,.07); --shadow:6px 7px 0 rgba(22,50,74,.11);
  font-family:'Segoe UI',system-ui,-apple-system,BlinkMacSystemFont,sans-serif; color:var(--ink); background:var(--paper); line-height:1.62;
}
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; min-width:320px; background-color:var(--paper); }
body::before { content:""; position:fixed; inset:0 0 auto 0; height:5px; background:var(--primary); z-index:20; }
a { color:var(--primary-dark); text-underline-offset:.2em; }
a:hover { text-decoration-thickness:3px; }
button,input { font:inherit; }
button,a,input { min-height:44px; }
img,svg { max-width:100%; }
.skip-link { position:fixed; top:8px; left:8px; transform:translateY(-160%); background:var(--ink); color:#fff; padding:10px 14px; z-index:100; }
.skip-link:focus { transform:none; }
:focus-visible { outline:3px solid var(--boundary); outline-offset:3px; }
.site-header { max-width:1180px; margin:0 auto; padding:24px 22px 18px; display:flex; align-items:center; justify-content:space-between; gap:24px; }
.brand { display:inline-flex; align-items:center; gap:10px; color:var(--ink); font-family:'Trebuchet MS','Segoe UI',sans-serif; font-weight:800; text-decoration:none; font-size:1.12rem; }
.brand-mark { display:grid; place-items:center; width:34px; height:34px; border:2px solid var(--ink); border-radius:50%; background:var(--energy); font:800 1.5rem/1 ui-monospace,'Cascadia Mono',Consolas,monospace; }
.site-header nav { display:flex; flex-wrap:wrap; gap:8px 20px; }
.site-header nav a { color:var(--ink); text-decoration:none; font-weight:650; }
.menu-toggle { display:none; border:2px solid var(--ink); background:var(--white); border-radius:6px; padding:8px 14px; color:var(--ink); }
main { max-width:1180px; margin:0 auto; padding:18px 22px 80px; }
.page-hero { padding:48px 0 20px; max-width:900px; }
.home .page-hero { max-width:780px; }
h1,h2,h3 { font-family:'Trebuchet MS','Segoe UI',sans-serif; line-height:1.12; margin-top:0; text-wrap:balance; }
h1 { font-size:clamp(2.4rem,6vw,5.4rem); letter-spacing:-.055em; }
h2 { font-size:clamp(1.75rem,3.2vw,2.8rem); letter-spacing:-.03em; margin-top:54px; }
h3 { font-size:1.15rem; }
p,li { max-width:75ch; }
.eyebrow { margin:0 0 10px; color:var(--primary-dark); font:800 .76rem/1.2 ui-monospace,'Cascadia Mono',Consolas,monospace; letter-spacing:.12em; text-transform:uppercase; }
.hero-note { display:grid; grid-template-columns:1.35fr .9fr; gap:34px; align-items:start; padding:24px 28px; border:2px solid var(--ink); border-radius:8px; box-shadow:var(--shadow); background:var(--white); margin-bottom:54px; }
.hero-note > p { font:700 clamp(1.2rem,2.4vw,1.75rem)/1.35 'Trebuchet MS','Segoe UI',sans-serif; margin:0; }
.hero-note dl { display:grid; gap:10px; margin:0; }
.hero-note dl div { display:grid; grid-template-columns:90px 1fr; gap:12px; border-bottom:1px solid var(--line); padding-bottom:7px; }
.hero-note dt { font-weight:800; }
.hero-note dd { margin:0; color:var(--muted); }
.calculator-section { margin:70px 0; }
.section-intro { max-width:740px; }
.equation-rail { margin-top:28px; display:grid; grid-template-columns:1fr auto 1fr auto 1.1fr; gap:14px; align-items:stretch; }
.rail-step,.rail-result,.component-fieldset,.trend-fieldset,.safety-fieldset { border:2px solid var(--ink); border-radius:8px; background:var(--white); padding:18px; min-width:0; }
.rail-result { border-radius:20px; background:var(--energy); display:flex; flex-direction:column; justify-content:space-between; }
.rail-result strong { font:800 1.4rem/1.25 ui-monospace,'Cascadia Mono',Consolas,monospace; }
.step-number { display:block; color:var(--primary-dark); font:800 .78rem/1 ui-monospace,'Cascadia Mono',Consolas,monospace; margin-bottom:16px; }
.operator { align-self:center; font:800 2rem/1 ui-monospace,'Cascadia Mono',Consolas,monospace; }
.rail-step label { display:block; font-weight:800; }
.unit-input { display:flex; align-items:center; gap:8px; margin:9px 0; }
.unit-input input,.trend-grid input,.component-row input { width:100%; border:2px solid var(--line); border-radius:6px; padding:10px; color:var(--ink); background:#fff; }
.rail-step small { color:var(--muted); }
.component-fieldset,.trend-fieldset,.safety-fieldset { grid-column:1/-1; margin:0; }
fieldset legend { font:800 1.12rem/1.2 'Trebuchet MS','Segoe UI',sans-serif; padding:0 8px; }
.component-row { display:grid; grid-template-columns:1.2fr repeat(5,1fr) auto; gap:9px; align-items:end; padding:14px 0; border-top:1px solid var(--line); }
.component-row label { font-size:.8rem; font-weight:700; }
.component-row button { border:2px solid var(--primary-dark); background:#fff; color:var(--primary-dark); border-radius:6px; padding:7px 10px; }
.trend-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; }
.trend-grid label { display:grid; gap:6px; font-weight:700; }
.safety-fieldset { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:8px 18px; }
.safety-fieldset legend,.safety-fieldset > p { grid-column:1/-1; }
.safety-fieldset label { display:flex; gap:9px; align-items:flex-start; }
.safety-fieldset input { min-height:auto; margin-top:5px; }
.button { display:inline-flex; align-items:center; justify-content:center; min-height:44px; padding:10px 18px; border:2px solid var(--primary-dark); border-radius:6px; background:var(--primary); color:#fff; font-weight:800; text-decoration:none; cursor:pointer; }
.button-quiet { background:#fff; color:var(--primary-dark); }
.calculate-button { grid-column:1/-1; justify-self:start; }
.result-panel { margin-top:20px; padding:24px; border:3px solid var(--observed); border-radius:20px; background:#fff; box-shadow:var(--shadow); }
.result-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px; }
.result-grid div { border-left:5px solid var(--observed); padding:8px 14px; background:#f3fbf8; }
.result-grid span { display:block; color:var(--muted); }
.result-grid strong { font:800 1.2rem/1.3 ui-monospace,'Cascadia Mono',Consolas,monospace; }
.no-js-note { margin-top:18px; border-left:6px solid var(--boundary); background:#fff; padding:18px; }
.js .no-js-only { display:none; }
.no-js .js-only { display:none!important; }
.protocol-sheet { margin:80px 0; padding:34px; background:var(--ink); color:#fff; border-radius:8px; box-shadow:10px 12px 0 rgba(217,101,43,.24); }
.protocol-sheet .eyebrow { color:var(--energy); }
.protocol-sheet h2 { margin-top:0; }
.protocol-lines { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.protocol-lines article { border-top:2px solid var(--energy); padding-top:16px; }
.protocol-lines article > span { display:grid; place-items:center; width:32px; height:32px; border:2px solid var(--energy); border-radius:50%; font:800 1rem/1 ui-monospace,'Cascadia Mono',Consolas,monospace; }
.protocol-lines p { color:#dce7ed; }
.editorial-body,.legal-page { max-width:820px; margin:0 auto; }
.editorial-body a,.legal-page a { overflow-wrap:anywhere; }
.editorial-body > h2,.legal-page > h2 { padding-top:22px; border-top:2px solid var(--line); }
.editorial-body li { margin-bottom:8px; }
.site-footer { background:var(--ink); color:#fff; padding:38px max(22px,calc((100vw - 1136px)/2)); display:grid; grid-template-columns:1fr 2fr; gap:28px; }
.site-footer a { color:#fff; }
.site-footer nav { display:flex; flex-wrap:wrap; gap:8px 18px; }
.site-footer p { grid-column:1/-1; color:#dce7ed; margin:0; }
.consent-settings { position:fixed; right:14px; bottom:14px; z-index:30; border:2px solid var(--ink); border-radius:6px; background:#fff; color:var(--ink); padding:8px 12px; }
.consent-banner[hidden] { display:none!important; }
.consent-banner { position:fixed; inset:0; z-index:50; display:grid; align-items:end; background:rgba(22,50,74,.58); padding:18px; }
.consent-panel { width:min(640px,100%); margin:0 auto; background:#fff; border:3px solid var(--ink); border-radius:8px; padding:24px; box-shadow:var(--shadow); }
.consent-panel h2 { margin:0 0 14px; }
.consent-actions { display:flex; gap:10px; flex-wrap:wrap; }
@media (max-width:820px) {
  .site-header { align-items:flex-start; }
  .menu-toggle { display:inline-flex; }
  .js .site-header nav { display:none; position:absolute; top:74px; right:18px; width:min(280px,calc(100vw - 36px)); background:#fff; border:2px solid var(--ink); padding:16px; box-shadow:var(--shadow); }
  .js .site-header nav.open { display:grid; }
  .hero-note { grid-template-columns:1fr; }
  .equation-rail { grid-template-columns:1fr; }
  .operator { transform:rotate(90deg); justify-self:center; }
  .component-fieldset,.trend-fieldset,.safety-fieldset,.calculate-button { grid-column:1; }
  .component-row { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .component-row label:first-child { grid-column:1/-1; }
  .trend-grid,.protocol-lines { grid-template-columns:1fr; }
  .site-footer { grid-template-columns:1fr; }
  .site-footer p { grid-column:1; }
}
@media (max-width:520px) {
  main { padding-left:16px; padding-right:16px; }
  .site-header { padding-left:16px; padding-right:16px; }
  h1 { font-size:clamp(2.25rem,13vw,3.6rem); overflow-wrap:anywhere; }
  .hero-note,.protocol-sheet { padding:20px; }
  .safety-fieldset { grid-template-columns:1fr; }
  .safety-fieldset legend,.safety-fieldset > p { grid-column:1; }
  .result-grid { grid-template-columns:1fr; }
  .consent-actions .button { width:100%; }
}
@media (prefers-reduced-motion:reduce) {
  *,*::before,*::after { scroll-behavior:auto!important; transition:none!important; animation:none!important; }
}