:root {
  color-scheme: light;
  --ink: oklch(24% 0.035 273);
  --muted: oklch(48% 0.035 273);
  --paper: oklch(97% 0.018 273);
  --panel: oklch(99% 0.008 273);
  --blue: oklch(55% 0.23 276);
  --blue-dark: oklch(42% 0.2 276);
  --lime: oklch(91% 0.2 116);
  --line: oklch(81% 0.05 273);
  --shadow: 0 1.5rem 4rem oklch(32% 0.08 276 / 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 79% 11%, oklch(91% 0.15 116 / 0.64), transparent 25rem),
    var(--paper);
  color: var(--ink);
  font-family: "Familjen Grotesk", ui-sans-serif, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.site-header,
main,
footer {
  width: min(1180px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  min-height: 5.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.wordmark {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.wordmark span { color: var(--blue); }

.canonry-link,
.text-link,
footer a {
  font-weight: 600;
  text-underline-offset: 0.25em;
}

.canonry-link { font-size: 0.95rem; }

.hero {
  min-height: min(760px, calc(100vh - 5.5rem));
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(22rem, 1.1fr);
  align-items: center;
  gap: clamp(2rem, 7vw, 7rem);
  padding-block: clamp(4rem, 8vw, 8rem);
}

.hero-copy { max-width: 38rem; }

.eyebrow {
  margin: 0 0 1rem;
  color: var(--blue-dark);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
p { margin-top: 0; }

h1 {
  max-width: 10ch;
  margin-bottom: 1.4rem;
  font-size: clamp(3.4rem, 7vw, 7.2rem);
  line-height: 0.9;
  letter-spacing: -0.065em;
}

.lede {
  max-width: 36rem;
  margin-bottom: 1.5rem;
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.45;
}

.calculator {
  position: relative;
  padding: clamp(1.2rem, 3vw, 2rem);
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transform: rotate(1.2deg);
}

.calculator::before {
  content: "LIVE WORKSHEET";
  position: absolute;
  top: -0.8rem;
  right: 1.25rem;
  padding: 0.5rem 0.75rem;
  background: var(--lime);
  border: 1px solid var(--ink);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.input-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

label {
  display: grid;
  gap: 0.35rem;
  padding: 1rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

label span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
}

input {
  width: 100%;
  min-height: 3.4rem;
  padding: 0;
  appearance: textfield;
  background: transparent;
  border: 0;
  border-radius: 0;
  color: var(--ink);
  font: inherit;
  font-size: 2rem;
  font-weight: 700;
}

input:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 0.25rem;
}

.result {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 0.25rem 1rem;
  margin-top: 1.25rem;
  padding: 1.25rem;
  background: var(--blue);
  color: var(--panel);
}

.result-label {
  align-self: start;
  font-weight: 600;
}

.result strong {
  grid-row: span 2;
  font-size: clamp(3rem, 7vw, 6rem);
  line-height: 0.82;
  letter-spacing: -0.06em;
}

.result span:last-child { opacity: 0.8; }

.fine-print {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.signal-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding-block: clamp(3rem, 7vw, 6rem);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.signal-flow div { display: grid; gap: 0.25rem; }
.signal-flow strong { font-size: 1.05rem; }
.signal-flow div span { color: var(--muted); font-size: 0.9rem; }
.arrow { color: var(--blue); font-size: 1.7rem; }

.reading {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(2rem, 8vw, 8rem);
  padding-block: clamp(5rem, 11vw, 10rem);
}

h2 {
  max-width: 13ch;
  margin-bottom: 0;
  font-size: clamp(2.3rem, 4vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.reading-links { border-top: 1px solid var(--ink); }

.reading-links a {
  min-height: 4.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  font-weight: 600;
  text-decoration: none;
  transition: color 180ms cubic-bezier(0.16, 1, 0.3, 1), padding 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reading-links a:hover { color: var(--blue); padding-inline: 0.5rem; }

a:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 0.3rem;
}

footer {
  min-height: 7rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
}

footer p { margin: 0; color: var(--muted); }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .calculator { transform: none; }
  .signal-flow { grid-template-columns: 1fr; gap: 0.7rem; }
  .signal-flow div { grid-template-columns: 1fr 1fr; }
  .arrow { transform: rotate(90deg); justify-self: center; }
  .reading { grid-template-columns: 1fr; }
}

@media (max-width: 540px) {
  .site-header { align-items: flex-start; padding-block: 1.25rem; }
  .canonry-link { max-width: 9rem; text-align: right; }
  .input-grid { grid-template-columns: 1fr; }
  .result { grid-template-columns: 1fr; }
  .result strong { grid-row: auto; margin-block: 0.6rem; }
  footer { align-items: flex-start; flex-direction: column; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}