:root {
  --ink: #1c1a17;
  --paper: #faf7f2;
  --gold: #a9772f;
  --gold-dark: #7d5a22;
  --green: #2f5d43;
  --line: #e4dccb;
  --muted: #6b6357;
  --click: #1a6ee0;
  --payme: #00c5a2;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Georgia', 'Noto Serif', serif;
  line-height: 1.65;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero {
  background: linear-gradient(160deg, var(--green) 0%, #1f3f2d 100%);
  color: #fff;
  padding: 64px 0 48px;
  text-align: center;
}
.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 13px;
  color: #cfe3d6;
  margin: 0 0 12px;
  font-family: 'Helvetica Neue', Arial, sans-serif;
}
.hero h1 {
  font-size: 34px;
  margin: 0 0 16px;
  font-weight: 700;
}
.hero .subtitle {
  font-size: 16px;
  color: #e4efe8;
  max-width: 560px;
  margin: 0 auto 28px;
}
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 13px 22px;
  border-radius: 8px;
  text-decoration: none;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: none;
}
.btn-primary { background: var(--gold); color: #fff; }
.btn-primary:hover { background: var(--gold-dark); }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.5); }
.btn-click { background: var(--click); color: #fff; }
.btn-payme { background: var(--payme); color: #05332b; }

main.wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-top: 40px;
  padding-bottom: 40px;
}
@media (min-width: 760px) {
  main.wrap { grid-template-columns: 220px 1fr; align-items: start; }
  .toc { position: sticky; top: 20px; }
}

.toc h2 {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 10px;
}
.toc ol { list-style: none; margin: 0; padding: 0; }
.toc li {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 14px;
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  color: var(--ink);
}
.toc li.locked { color: var(--muted); }
.toc li.locked::after { content: " 🔒"; }
.toc li:hover { color: var(--gold-dark); }

.content h2.chapter-title {
  font-size: 24px;
  border-bottom: 2px solid var(--gold);
  padding-bottom: 10px;
  margin-top: 40px;
}
.content p { font-size: 17px; margin: 0 0 16px; white-space: pre-wrap; }
.content .locked-block {
  background: #fff;
  border: 1px dashed var(--gold);
  border-radius: 10px;
  padding: 24px;
  text-align: center;
  margin: 24px 0 40px;
  font-family: 'Helvetica Neue', Arial, sans-serif;
}
.content .locked-block a { color: var(--gold-dark); font-weight: 600; }
.loading { color: var(--muted); font-family: 'Helvetica Neue', Arial, sans-serif; }

.buy {
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 48px 0;
  text-align: center;
  font-family: 'Helvetica Neue', Arial, sans-serif;
}
.buy h2 { font-family: Georgia, serif; font-size: 26px; }
.pay-options { display: flex; gap: 12px; justify-content: center; margin: 20px 0; flex-wrap: wrap; }
.hint { color: var(--muted); font-size: 14px; }

.unlock-box {
  max-width: 380px;
  margin: 28px auto 0;
  text-align: left;
}
.unlock-box label { font-size: 13px; color: var(--muted); display: block; margin-bottom: 6px; }
.unlock-row { display: flex; gap: 8px; }
#code-input {
  flex: 1;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 15px;
}
.unlock-msg { min-height: 20px; font-size: 14px; margin-top: 8px; }
.unlock-msg.ok { color: var(--green); }
.unlock-msg.err { color: #b3261e; }

.legal-note { font-size: 13px; color: var(--muted); margin-top: 24px; }
.legal-note a { color: var(--gold-dark); }

.site-footer {
  padding: 28px 0;
  text-align: center;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 13px;
  color: var(--muted);
}