:root {
  --bg: #f3ede2;
  --bg-deep: #d8c6aa;
  --ink: #211910;
  --muted: #6a5e4d;
  --line: rgba(33, 25, 16, 0.16);
  --paper: rgba(255, 250, 242, 0.82);
  --paper-strong: rgba(255, 250, 242, 0.94);
  --accent: #8f4c2a;
  --accent-soft: #b86f48;
  --shadow: 0 24px 60px rgba(64, 42, 16, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(184, 111, 72, 0.18), transparent 28%),
    radial-gradient(circle at bottom right, rgba(143, 76, 42, 0.12), transparent 32%),
    linear-gradient(180deg, #f8f2e8 0%, var(--bg) 42%, var(--bg-deep) 100%);
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.08;
  background-image:
    linear-gradient(rgba(33, 25, 16, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(33, 25, 16, 0.04) 1px, transparent 1px);
  background-size: 24px 24px;
}

.page {
  position: relative;
  max-width: 1120px;
  margin: 0 auto;
  padding: 40px 20px 72px;
}

.hero,
.frame,
.letter {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--paper-strong) 0%, var(--paper) 100%);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero {
  padding: 56px 56px 48px;
  border-radius: 34px;
}

.hero::after,
.frame::after,
.letter::after {
  content: "";
  position: absolute;
  inset: auto -8% -40% auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(184, 111, 72, 0.12) 0%, transparent 70%);
}

.eyebrow,
.section-label,
.card-index {
  margin: 0;
  font-family: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eyebrow,
.section-label {
  font-size: 0.72rem;
  color: var(--accent);
}

.hero h1 {
  margin: 10px 0 18px;
  font-size: clamp(3.2rem, 10vw, 6.8rem);
  line-height: 0.92;
  letter-spacing: -0.05em;
}

.lede {
  max-width: 760px;
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.7;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.hero-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  transition: transform 160ms ease, background-color 160ms ease, color 160ms ease;
}

.hero-actions a:hover {
  transform: translateY(-1px);
}

.primary {
  background: var(--accent);
  color: #fff6ee;
}

.secondary {
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.58);
}

.frame,
.letter {
  margin-top: 24px;
  border-radius: 28px;
}

.frame {
  padding: 34px 34px 32px;
}

.frame.compact {
  padding-bottom: 26px;
}

.frame-head,
.letter-header {
  max-width: 760px;
}

.section-intro {
  margin: 8px 0 0;
  font-size: 1.03rem;
  line-height: 1.75;
  color: var(--muted);
}

.signal-grid,
.promise-grid {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.signal-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.promise-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.signal-card,
.promise {
  border: 1px solid rgba(33, 25, 16, 0.1);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.55);
  padding: 18px 18px 20px;
}

.card-index {
  font-size: 0.7rem;
  color: var(--accent-soft);
}

.signal-card h2,
.promise h3,
.letter-header h2 {
  margin: 12px 0 10px;
  font-weight: 600;
}

.signal-card h2,
.promise h3 {
  font-size: 1.3rem;
}

.signal-card p,
.promise p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.letter {
  padding: 34px;
}

.letter-header h2 {
  font-size: clamp(2rem, 6vw, 3.4rem);
  letter-spacing: -0.04em;
}

.letter-body {
  column-count: 2;
  column-gap: 28px;
  margin-top: 22px;
}

.letter-body p {
  margin: 0 0 18px;
  font-size: 1.04rem;
  line-height: 1.88;
  break-inside: avoid;
}

.footer {
  padding: 18px 6px 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.footer a {
  color: var(--accent);
}

@media (max-width: 920px) {
  .signal-grid,
  .promise-grid {
    grid-template-columns: 1fr;
  }

  .letter-body {
    column-count: 1;
  }

  .hero {
    padding: 38px 24px 34px;
    border-radius: 28px;
  }

  .frame,
  .letter {
    padding: 24px;
  }
}