:root {
  --bisque: #f6efe4;
  --bisque-2: #efe4d3;
  --card: #fbf7f0;
  --ink: #2a1f18;
  --ink-2: #5b4b3f;
  --muted: #8a7867;
  --line: #dccdb8;
  --ember: #c4501f;
  --ember-ink: #a33f13;
  --celadon: #6f8f80;
  --glow: #f2a25c;
  --radius: 14px;
  --maxw: 1120px;
  --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, SFMono-Regular, Menlo, monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bisque: #1a1410;
    --bisque-2: #221a14;
    --card: #241c16;
    --ink: #f3e9dc;
    --ink-2: #cdbba6;
    --muted: #9b8875;
    --line: #3a2e24;
    --ember: #ec7a43;
    --ember-ink: #f59a68;
    --celadon: #93b5a5;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bisque);
  color: var(--ink);
  font: 400 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--ember-ink); text-underline-offset: 3px; }
a:hover { color: var(--ember); }
img, svg { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--ember); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } }

/* Header */
.site-head { border-bottom: 1px solid var(--line); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 600 21px/1 var(--serif); letter-spacing: -0.01em; }
.brand svg { width: 28px; height: 28px; }
.nav { display: flex; gap: 22px; font-size: 15px; }
.nav a { color: var(--ink-2); text-decoration: none; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }
@media (max-width: 600px) { .nav { gap: 14px; font-size: 14px; } .nav .hide-sm { display: none; } }

/* Type */
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -0.02em; line-height: 1.1; margin: 0; }
h1 { font-size: clamp(40px, 6.4vw, 74px); font-variation-settings: "opsz" 144; }
h2 { font-size: clamp(28px, 3.6vw, 40px); }
h3 { font-size: 21px; letter-spacing: -0.01em; }
p { margin: 0; }
.eyebrow { font: 500 13px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ember-ink); }
.lede { font-size: clamp(18px, 2vw, 21px); color: var(--ink-2); max-width: 40em; }

/* Hero */
.hero { padding: 88px 0 72px; position: relative; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 56px; align-items: center; }
.hero h1 em { font-style: italic; color: var(--ember); }
.hero .lede { margin-top: 24px; }
.hero-art { aspect-ratio: 1; border-radius: 50%; position: relative;
  background: radial-gradient(circle at 50% 58%, var(--glow) 0%, var(--ember) 32%, #7a2a0c 62%, #3a160a 100%);
  box-shadow: inset 0 0 0 10px var(--bisque-2), inset 0 0 0 11px var(--line);
}
.hero-art svg { position: absolute; inset: 18%; width: 64%; height: 64%; }
@media (max-width: 860px) {
  .hero { padding: 56px 0 48px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 36px; }
  .hero-art { max-width: 260px; }
}

/* Signup */
.signup { margin-top: 36px; max-width: 520px; }
.signup-row { display: flex; gap: 8px; }
.signup input[type="email"], .field input, .field select {
  flex: 1; min-width: 0; height: 50px; padding: 0 16px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--card); color: var(--ink); font: inherit; font-size: 16px;
}
.signup input:focus, .field input:focus, .field select:focus { outline: none; border-color: var(--ember); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ember) 22%, transparent); }
.btn { height: 50px; padding: 0 22px; border: 0; border-radius: 10px; background: var(--ember); color: #fff; font: 600 16px/1 var(--sans); cursor: pointer; white-space: nowrap; text-decoration: none; display: inline-flex; align-items: center; }
.btn:hover { background: var(--ember-ink); color: #fff; }
.btn:disabled { opacity: 0.6; cursor: progress; }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { background: var(--bisque-2); color: var(--ink); }
.signup-roles { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; }
.chip span { display: inline-block; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; font-size: 14px; color: var(--ink-2); cursor: pointer; }
.chip input:checked + span { border-color: var(--ember); color: var(--ember-ink); background: color-mix(in srgb, var(--ember) 10%, transparent); }
.chip input:focus-visible + span { outline: 2px solid var(--ember); outline-offset: 2px; }
.signup-note { margin-top: 12px; font-size: 14px; color: var(--muted); }
.signup-msg { margin-top: 12px; font-size: 15px; min-height: 1.5em; }
.signup-msg.ok { color: var(--celadon); font-weight: 600; }
.signup-msg.err { color: var(--ember-ink); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
@media (max-width: 480px) { .signup-row { flex-direction: column; } .btn { justify-content: center; } }

/* Sections */
section { padding: 80px 0; }
.band { background: var(--bisque-2); border-block: 1px solid var(--line); }
.section-head { display: flex; flex-direction: column; gap: 14px; max-width: 44em; margin-bottom: 40px; }
.section-head p { color: var(--ink-2); }
@media (max-width: 600px) { section { padding: 56px 0; } }

.grid { display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); }
.grid.two { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 860px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .grid, .grid.two { grid-template-columns: 1fr; } }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column; gap: 10px; }
.card p { color: var(--ink-2); font-size: 16px; }
.card .num { font: 500 13px/1 var(--mono); color: var(--muted); }
.card ul { margin: 4px 0 0; padding-left: 18px; color: var(--ink-2); font-size: 15px; }
.card ul li { margin: 3px 0; }
.tag { align-self: flex-start; font: 500 12px/1 var(--mono); letter-spacing: 0.04em; text-transform: uppercase; padding: 5px 8px; border-radius: 6px; background: color-mix(in srgb, var(--celadon) 18%, transparent); color: var(--celadon); }
.tag.live { background: color-mix(in srgb, var(--ember) 15%, transparent); color: var(--ember-ink); }

.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.feature .card { padding: 30px; }
@media (max-width: 860px) { .feature { grid-template-columns: 1fr; gap: 28px; } }

.cones { display: flex; gap: 6px; align-items: flex-end; height: 80px; }
.cones i { width: 18px; background: var(--ink-2); clip-path: polygon(50% 0, 100% 100%, 0 100%); opacity: .85; }
.cones i:nth-child(1) { height: 78px; transform: rotate(0deg); }
.cones i:nth-child(2) { height: 78px; transform: rotate(38deg); transform-origin: bottom left; }
.cones i:nth-child(3) { height: 78px; transform: rotate(82deg); transform-origin: bottom left; background: var(--ember); }

.principles { list-style: none; padding: 0; margin: 0; display: grid; gap: 0; border-top: 1px solid var(--line); }
.principles li { display: grid; grid-template-columns: 220px 1fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.principles strong { font-family: var(--serif); font-size: 19px; font-weight: 600; }
.principles span { color: var(--ink-2); }
@media (max-width: 600px) { .principles li { grid-template-columns: 1fr; gap: 6px; } }

/* Prose pages */
.page-head { padding: 64px 0 32px; }
.page-head .lede { margin-top: 18px; }
.prose { max-width: 44em; padding-bottom: 80px; }
.prose h2 { font-size: 28px; margin: 48px 0 14px; }
.prose p, .prose ul { color: var(--ink-2); margin: 0 0 14px; }
.prose ul { padding-left: 20px; }
.prose li { margin: 6px 0; }
.callout { border-left: 3px solid var(--ember); background: var(--card); padding: 16px 20px; border-radius: 0 10px 10px 0; color: var(--ink-2); margin: 20px 0; }

/* Calculator */
.calc { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 24px; align-items: start; padding-bottom: 40px; }
@media (max-width: 860px) { .calc { grid-template-columns: 1fr; } }
.calc form { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: grid; gap: 20px; }
.field { display: grid; gap: 6px; }
.field label { font-weight: 600; font-size: 15px; }
.field .hint { font-size: 13px; color: var(--muted); }
.field .pair { display: flex; gap: 8px; align-items: center; }
.field .unit { font: 500 14px/1 var(--mono); color: var(--muted); min-width: 44px; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.seg label { font-weight: 500; font-size: 14px; }
.seg input { position: absolute; opacity: 0; }
.seg span { display: block; padding: 9px 14px; cursor: pointer; color: var(--ink-2); }
.seg input:checked + span { background: var(--ink); color: var(--bisque); }
.seg input:focus-visible + span { outline: 2px solid var(--ember); outline-offset: -2px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 480px) { .row2 { grid-template-columns: 1fr; } }
.result { position: sticky; top: 20px; background: var(--ink); color: var(--bisque); border-radius: var(--radius); padding: 28px; display: grid; gap: 18px; }
.result .big { font: 600 clamp(44px, 6vw, 60px)/1 var(--serif); letter-spacing: -0.02em; }
.result .label { font: 500 12px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; opacity: 0.7; }
.result dl { display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; margin: 0; font-size: 15px; border-top: 1px solid color-mix(in srgb, var(--bisque) 20%, transparent); padding-top: 16px; }
.result dt { opacity: 0.75; }
.result dd { margin: 0; font-family: var(--mono); text-align: right; }
.result .fine { font-size: 13px; opacity: 0.7; }

/* Footer */
.site-foot { border-top: 1px solid var(--line); padding: 40px 0 56px; font-size: 14px; color: var(--muted); }
.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); text-decoration: none; }
.site-foot a:hover { color: var(--ink); }

/* Fixes */
[hidden] { display: none !important; }
.calc, .row2 { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.calc { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); }
@media (max-width: 860px) { .calc { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 480px) { .row2 { grid-template-columns: minmax(0, 1fr); } }
.field select { width: 100%; max-width: 100%; text-overflow: ellipsis; }
.field .pair select { width: auto; }