@font-face {
  font-family: "Space Grotesk";
  src: url("fonts/space-grotesk-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Values from site/breakout-channels/DESIGN-BRIEF.md — binding, do not invent. */
  --color-bg: #FAFAF7;
  --color-ink: #101214;
  --color-text-secondary: #6B7178;
  --color-accent: #E62117;
  --color-card-border: #E8E6E0;
  --card-shadow: 0 1px 3px rgba(16, 18, 20, 0.08);
  --font-heading: "Space Grotesk", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", monospace;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 40px;
  --space-5: 64px;
  --space-6: 104px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.5;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

.col {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 var(--space-3);
}

main > .col:first-child { padding-top: var(--space-5); }
main > .col:last-child { padding-bottom: var(--space-6); }

.chart-wrap { max-width: 840px; margin: 0 auto var(--space-6); padding: 0 var(--space-3); }

.chart-frame { position: relative; }

.wordmark {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: var(--space-5);
}

.wordmark .dot { color: var(--color-accent); }

h1 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 2.369rem; /* 1.333 scale from 17px body */
  line-height: 1.15;
  letter-spacing: normal;
  margin-bottom: var(--space-2);
  max-width: 16ch;
}

.subhead {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  max-width: 48ch;
  margin-bottom: var(--space-4);
}

.signup-form {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-2);
  max-width: 480px;
}

.signup-form input[type="email"] {
  flex: 1;
  background: #FFFFFF;
  border: 1px solid var(--color-card-border);
  border-radius: 4px;
  padding: var(--space-2);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1rem;
}

.signup-form input[type="email"]::placeholder { color: var(--color-text-secondary); }

.signup-form input[type="email"]:focus,
.signup-form button:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.signup-form button {
  background: var(--color-accent);
  color: #FFFFFF;
  border: none;
  border-radius: 4px;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  white-space: nowrap;
}

.signup-form button:hover { background: #C81C13; }

.trust-strip {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin-bottom: var(--space-6);
}

/* Signature element: the annotated breakout curve. */
.breakout-chart h2 {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-2);
}

.breakout-chart svg { width: 100%; height: auto; display: block; }

.callout {
  position: absolute;
  background: #FFFFFF;
  border: 1px solid var(--color-card-border);
  border-radius: 6px;
  box-shadow: var(--card-shadow);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.35;
  color: var(--color-ink);
  padding: 8px 10px;
  max-width: 150px;
}

.callout-tactic { left: 4%; top: 6%; }
.callout-outcome { right: 2%; top: 4%; text-align: right; }

.chart-caption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
  max-width: 60ch;
}

section.sample {
  border-top: 1px solid var(--color-card-border);
  padding-top: var(--space-4);
  margin-bottom: var(--space-5);
}

section.sample h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.4rem;
  margin-bottom: var(--space-2);
}

section.sample p {
  margin-bottom: var(--space-2);
  max-width: 60ch;
}

.figure-list {
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin: var(--space-2) 0;
}

.figure-list li { margin-bottom: 4px; }
.figure-list strong { color: var(--color-ink); }

.skepticism {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
}

.lead-magnet {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-5);
  max-width: 60ch;
}

.repeat-cta {
  text-align: left;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-card-border);
}

.repeat-cta p { color: var(--color-text-secondary); margin-bottom: var(--space-2); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

a { color: var(--color-accent); }
a:hover { text-decoration-thickness: 2px; }