:root{color-scheme:dark;--bg:#10191d;--panel:#17252b;--ink:#ecf3ef;--muted:#b5c8c5;--accent:#e1ae77;--line:#33474c}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,sans-serif;line-height:1.65}a{color:var(--accent);text-underline-offset:4px}a:hover{color:white}a:focus-visible,input:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:4px}.draft{padding:9px 18px;text-align:center;background:#29413f;font-size:11px;letter-spacing:.13em;color:#e9f3ed}header,main,footer{max-width:1120px;margin:auto;padding:0 30px}header{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;padding-top:30px;padding-bottom:24px;border-bottom:1px solid var(--line)}.brand{font-size:20px;font-weight:800;letter-spacing:.12em;color:var(--ink);text-decoration:none}.brand span{display:block;font-size:10px;letter-spacing:.5em;color:var(--accent)}nav{display:flex;gap:24px;flex-wrap:wrap}nav a{font-size:13px;color:var(--muted);text-decoration:none}.hero{padding:76px 0 64px}.eyebrow{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:700}h1{font-size:clamp(36px,5.8vw,72px);line-height:1.06;letter-spacing:-.045em;font-weight:700;max-width:920px;margin:20px 0 26px}h1 em{color:var(--accent);font-style:normal}h2{font-size:clamp(25px,3vw,36px);line-height:1.2;letter-spacing:-.03em;margin:12px 0 22px}h3{line-height:1.3}.intro{max-width:720px;font-size:19px;color:var(--muted)}.actions{display:flex;gap:20px;flex-wrap:wrap;align-items:center;margin:32px 0}.button{display:inline-block;background:var(--accent);color:#142126;padding:13px 23px;text-decoration:none;font-size:14px;font-weight:750;border-radius:4px}.button:hover{background:#f2c695;color:#142126}.secondary{font-size:14px}.small,small{font-size:12px;color:var(--muted)}section{padding:46px 0;border-bottom:1px solid var(--line)}.sectionhead{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap}.two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.metric,.reading{background:var(--panel);padding:28px;border:1px solid var(--line);border-radius:6px}.metric h3{font-size:43px;margin:10px 0}.metric p{margin:6px 0}.metric a{font-size:12px}.metric svg{display:block;width:100%;margin:10px 0 0}.trend{stroke:var(--accent);stroke-width:3;fill:none}.grid{stroke:var(--line);stroke-width:1}svg text{fill:var(--muted);font-size:13px}.note{border-left:2px solid var(--accent);padding-left:18px;font-size:13px;color:var(--muted);margin-top:24px}.calculator{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:24px;margin:26px 0}.inputs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}label{display:block;font-size:13px;color:var(--muted)}input{display:block;width:100%;padding:12px;margin-top:8px;background:#0d171c;border:1px solid #59716f;color:var(--ink);font:inherit;border-radius:4px;min-width:0}.result{border:1px solid var(--line);background:var(--panel);padding:26px;border-radius:6px}output{font-size:36px;font-weight:700}.result p{margin:6px 0}#calcerror{font-size:13px;color:#ffd2ab}.reading{text-decoration:none;color:var(--ink)}.reading span{font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--accent)}.reading h3{font-size:21px}.reading p{font-size:14px;color:var(--muted)}.reading b{font-size:12px;color:var(--accent)}.signup{max-width:780px}form{display:flex;align-items:end;gap:14px;flex-wrap:wrap}form label{flex:1;min-width:220px}button{padding:13px 20px;border:1px solid var(--line);background:var(--panel);color:var(--muted);font:inherit;font-size:13px;border-radius:4px}button:disabled{cursor:not-allowed}.prose{max-width:790px;margin:64px auto 85px}.prose h1{font-size:clamp(34px,4.5vw,54px)}.prose h2{font-size:25px;margin-top:38px}.prose p,.prose li{color:var(--muted)}.prose li{margin:12px 0}footer{padding-top:34px;padding-bottom:40px;color:var(--muted);font-size:12px}footer p{max-width:800px}@media(max-width:700px){header,main,footer{padding-left:20px;padding-right:20px}.hero{padding:45px 0}.two,.calculator{grid-template-columns:1fr}nav{gap:16px}.metric,.reading{padding:21px}.inputs{grid-template-columns:repeat(2,minmax(0,1fr))}.prose{margin-top:42px}form label{min-width:100%}.intro{font-size:17px}output{font-size:32px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Launch-prep responsive hardening. Structural review only; visual QA remains pending. */
body{overflow-wrap:break-word}
header>*,nav>*,.sectionhead>*,.two>*,.calculator>*,.inputs>*,.actions>*{min-width:0}
a,.prose li,.note,.metric p,.result output{overflow-wrap:anywhere}
input,button{font-size:16px;min-height:44px}
nav a{display:inline-flex;align-items:center;min-height:44px;padding:8px 0}
.actions .button{min-height:44px}
.result output{display:block;max-width:100%;line-height:1.2;font-variant-numeric:tabular-nums}
.trendchart{margin:18px 0 12px;min-width:0}
.trendchart figcaption{margin-top:8px;line-height:1.5}
.skip-link{position:absolute;top:-100px;left:16px;padding:10px;background:var(--bg);color:var(--ink);z-index:5}
.skip-link:focus{top:8px}
@media(max-width:480px){
 .inputs{grid-template-columns:minmax(0,1fr)}
 .actions{align-items:stretch;gap:12px}
 .actions .button,.actions .secondary{width:100%;text-align:center;padding:12px}
 nav{width:100%;gap:16px}
 .sectionhead{align-items:start}
 .metric h3{font-size:clamp(30px,9vw,43px)}
 .result{padding:20px}
 form{align-items:stretch}
 form label,form button{width:100%;min-width:0;flex-basis:100%}
}
@media(max-width:360px){header,main,footer{padding-left:16px;padding-right:16px}.metric,.reading{padding:18px}.hero h1{font-size:34px}}

/* Public signup: native POST/redirect; consent is explicit and unchecked. */
.embeddable-buttondown-form input[type="hidden"]{display:none}
.embeddable-buttondown-form .consent{display:flex;align-items:flex-start;gap:12px;flex:0 0 100%;min-width:0;min-height:44px;cursor:pointer}
.embeddable-buttondown-form .consent input{display:inline-block;flex:0 0 22px;width:22px;height:22px;min-height:22px;margin:2px 0 0;accent-color:var(--accent)}
.embeddable-buttondown-form .consent span{min-width:0}
.embeddable-buttondown-form .newsletter-submit{background:var(--accent);color:var(--bg);font-weight:700;cursor:pointer}