:root {
  --paper: #f7f3ec;
  --paper-2: #efe8dc;
  --card: #fffdf9;
  --ink: #1d2a26;
  --ink-2: #4a5a54;
  --line: #ddd3c3;
  --accent: #1f5e4f;
  --accent-ink: #ffffff;
  --pixel: #d9825b;
  --focus: #2f7dd1;
  --ok: #1f6b45;
  --bad: #a23a2a;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --wrap: 1120px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #141a18; --paper-2: #1b2320; --card: #1a211f; --ink: #ece6dc; --ink-2: #a9b3ae;
    --line: #2e3935; --accent: #7cc4ad; --accent-ink: #0f1513; --pixel: #e3956f; --ok: #79c99b; --bad: #f08f7d;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.6 var(--sans); }
img { max-width: 100%; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; background: var(--card); padding: 8px 12px; z-index: 10; }

/* Header */
.site-head { border-bottom: 1px solid var(--line); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; font: 600 21px/1 var(--serif); color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.brand-mark { display: grid; grid-template-columns: repeat(2, 7px); gap: 2px; }
.brand-mark i { width: 7px; height: 7px; background: var(--accent); }
.brand-mark i:nth-child(2) { background: var(--pixel); }
.brand-mark i:nth-child(3) { opacity: .45; }
.nav { display: flex; gap: 20px; flex-wrap: wrap; font-size: 15px; }
.nav a { color: var(--ink-2); text-decoration: none; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; }

/* Type */
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -0.015em; line-height: 1.12; margin: 0 0 .5em; }
h1 { font-size: clamp(38px, 6.4vw, 72px); font-weight: 500; }
h2 { font-size: clamp(28px, 3.6vw, 40px); font-weight: 500; }
h3 { font-size: 21px; }
p { margin: 0 0 1em; }
.eyebrow { font: 500 13px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
.eyebrow::before { content: ""; width: 8px; height: 8px; background: var(--pixel); }
.lede { font-size: clamp(18px, 2vw, 21px); color: var(--ink-2); max-width: 46ch; }
.muted { color: var(--ink-2); }
.small { font-size: 14px; }

/* Sections */
section { padding: 72px 0; }
section + section { border-top: 1px solid var(--line); }
.hero { padding: 88px 0 72px; }
.hero h1 em { font-style: italic; color: var(--accent); }
.hero-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 56px; align-items: end; }
.section-head { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-bottom: 40px; align-items: end; }
.section-head p { color: var(--ink-2); margin: 0; }

/* Cards / grids */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.grid-3 > * { background: var(--paper); padding: 28px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.num { font: 500 13px/1 var(--mono); color: var(--pixel); margin-bottom: 14px; display: block; }
.card { background: var(--card); border: 1px solid var(--line); padding: 28px; }
.card h3 { margin-bottom: .4em; }
.card .go { font-weight: 600; text-decoration: none; }
.card .go::after { content: " →"; }
.tag { display: inline-block; font: 500 12px/1 var(--mono); padding: 5px 8px; border: 1px solid var(--line); color: var(--ink-2); margin-bottom: 14px; }
.tag.live { border-color: var(--accent); color: var(--accent); }
ul.ticks { list-style: none; padding: 0; margin: 0; }
ul.ticks li { padding: 10px 0 10px 22px; border-top: 1px solid var(--line); position: relative; }
ul.ticks li::before { content: ""; position: absolute; left: 0; top: 19px; width: 8px; height: 8px; background: var(--accent); }

/* Forms */
form.signup { display: grid; gap: 12px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }
label { font-size: 14px; font-weight: 500; display: block; margin-bottom: 6px; }
input, select { font: inherit; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 0; padding: 12px 14px; width: 100%; min-height: 48px; }
input:focus, select:focus { border-color: var(--accent); }
.row input[type=email] { flex: 1 1 220px; width: auto; }
button, .btn { font: 600 16px/1 var(--sans); background: var(--accent); color: var(--accent-ink); border: 0; padding: 0 22px; min-height: 48px; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; text-decoration: none; }
button:hover, .btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--ink); }
.hp { position: absolute; left: -5000px; width: 1px; height: 1px; overflow: hidden; }
.form-msg { font-size: 15px; min-height: 1.4em; margin: 0; }
.form-msg.ok { color: var(--ok); } .form-msg.bad { color: var(--bad); }
.signup-box { background: var(--card); border: 1px solid var(--line); padding: 28px; }
.signup-box h3 { font-size: 24px; }

/* Calculators */
.calc { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--line); background: var(--card); }
.calc fieldset { border: 0; margin: 0; padding: 28px; display: grid; gap: 16px; align-content: start; }
.calc legend { font: 500 13px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-2); padding: 0; margin-bottom: 8px; float: left; width: 100%; }
.calc .field small { display: block; color: var(--ink-2); font-size: 13px; margin-top: 4px; }
.calc .out { background: var(--paper-2); padding: 28px; border-left: 1px solid var(--line); }
.metric { padding: 14px 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; align-items: baseline; }
.metric:first-of-type { border-top: 0; }
.metric span { color: var(--ink-2); font-size: 15px; }
.metric strong { font: 500 22px/1.1 var(--mono); white-space: nowrap; text-align: right; }
.metric span { flex: 1 1 auto; min-width: 0; }
.metric.big strong { font-size: 34px; }
.pos { color: var(--ok); } .neg { color: var(--bad); }
.verdict { margin-top: 18px; padding: 16px; border-left: 4px solid var(--accent); background: var(--card); font-size: 15px; }
.prose { max-width: 70ch; }
.prose h2 { margin-top: 1.6em; font-size: 28px; }
.prose li { margin-bottom: .4em; }
.note { font-size: 14px; color: var(--ink-2); border-top: 1px solid var(--line); padding-top: 16px; margin-top: 24px; }

/* Footer */
.site-foot { border-top: 1px solid var(--line); padding: 40px 0 56px; font-size: 14px; color: var(--ink-2); }
.site-foot .wrap { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.site-foot nav { display: flex; gap: 18px; flex-wrap: wrap; }
.site-foot a { color: var(--ink-2); }

@media (max-width: 860px) {
  .hero-grid, .section-head, .grid-2, .calc { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .calc .out { border-left: 0; border-top: 1px solid var(--line); }
  section { padding: 56px 0; }
  .hero { padding: 56px 0; }
}
@media (max-width: 480px) {
  .wrap { padding: 0 16px; }
  .calc fieldset, .calc .out, .card, .signup-box, .grid-3 > * { padding: 20px; }
  .nav { gap: 14px; }
}