:root {
  --cream: #faf6ef;
  --paper: #f3ecdf;
  --ink: #2b2620;
  --ink-soft: #5a5245;
  --green: #2f4a3c;
  --green-deep: #1f332a;
  --terracotta: #b5573c;
  --line: #e0d6c2;
  --max: 1080px;
  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}
.wrap.narrow { max-width: 720px; }
.wrap.center { text-align: center; }

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

.kicker {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--terracotta);
  margin: 0 0 12px;
}

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 16px;
}

/* Hero */
.hero {
  padding: 96px 0 72px;
  background: linear-gradient(180deg, var(--paper) 0%, var(--cream) 100%);
  border-bottom: 1px solid var(--line);
  text-align: center;
}
.hero .wrap { max-width: 680px; }
.hero h1 {
  font-size: clamp(48px, 9vw, 84px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--green-deep);
  margin-bottom: 18px;
}
.hero .subtitle {
  font-family: var(--serif);
  font-size: clamp(19px, 2.6vw, 24px);
  color: var(--green);
  margin: 0 0 24px;
  font-weight: 400;
}
.hero .lede {
  font-size: 17px;
  color: var(--ink-soft);
  max-width: 540px;
  margin: 0 auto 40px;
}

.signup {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 460px;
  margin: 0 auto;
}
.signup input[type="email"] {
  flex: 1 1 240px;
  min-width: 0;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-family: var(--sans);
  font-size: 15px;
  color: var(--ink);
}
.signup input[type="email"]:focus {
  outline: 2px solid var(--green);
  outline-offset: 1px;
}
.signup button {
  flex: 0 0 auto;
  padding: 14px 22px;
  border: none;
  border-radius: 8px;
  background: var(--green);
  color: var(--cream);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.15s ease;
}
.signup button:hover { background: var(--green-deep); }
.signup button:disabled { opacity: 0.6; cursor: default; }

.microcopy {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 14px 0 0;
}
.microcopy.success { color: var(--green); font-weight: 600; }
.microcopy.error { color: var(--terracotta); font-weight: 600; }

/* Sections */
section { padding: 72px 0; }

.premise { background: var(--cream); }
.premise .drop {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.5;
  color: var(--green-deep);
}
.premise p { font-size: 16px; color: var(--ink-soft); }
.premise strong { color: var(--ink); }

.toc {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.toc h2 { font-size: 32px; }
.section-lede {
  color: var(--ink-soft);
  font-size: 16px;
  margin-bottom: 36px;
}
.chapters {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}
.chapters li {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.chapters li:last-child { border-bottom: none; }
.chapters .num {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--terracotta);
  flex: 0 0 28px;
}
.chapters .title {
  font-size: 17px;
  color: var(--ink);
}

.excerpt { background: var(--cream); }
.excerpt blockquote {
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1.5;
  color: var(--green-deep);
  margin: 0 0 32px;
  padding-left: 24px;
  border-left: 3px solid var(--terracotta);
}
.excerpt blockquote:last-child { margin-bottom: 0; }

.plan-preview {
  background: var(--green-deep);
  color: var(--cream);
}
.plan-preview .kicker { color: #d9a389; }
.plan-preview h2 { color: var(--cream); font-size: 30px; }
.decade-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.decade {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  padding: 20px;
}
.decade h3 {
  font-family: var(--serif);
  color: #d9a389;
  font-size: 20px;
  margin-bottom: 12px;
}
.decade ul {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
  color: #e8e2d6;
}
.decade li { margin-bottom: 8px; }
.decade li:last-child { margin-bottom: 0; }

.closing {
  text-align: center;
  background: var(--paper);
}
.closing h2 {
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.35;
  color: var(--green-deep);
  max-width: 640px;
  margin: 0 auto 36px;
}

footer {
  padding: 32px 0;
  border-top: 1px solid var(--line);
}
footer p {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0;
}

@media (max-width: 720px) {
  .decade-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .decade-grid { grid-template-columns: 1fr; }
  .signup { flex-direction: column; }
  .signup input[type="email"] { flex: none; width: 100%; }
  .signup button { flex: none; width: 100%; }
}