:root {
  --steel: #2b4c6f;
  --steel-dark: #1d3550;
  --ink: #1a1f24;
  --dim: #5a6b7a;
  --line: #dde3e8;
  --bg: #f7f9fb;
  --card: #ffffff;
  --accent: #c98a2c;
  --good: #2f6f4f;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}
.draft-banner {
  background: var(--steel-dark);
  color: #fff;
  text-align: center;
  font-size: 0.85rem;
  padding: 8px 16px;
  letter-spacing: 0.02em;
}
.draft-banner strong { color: #ffd889; }

header.site {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 249, 251, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.nav {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
}
.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--steel-dark);
  letter-spacing: 0.01em;
}
.brand .tag {
  display: block;
  font-weight: 400;
  font-size: 0.68rem;
  color: var(--dim);
  letter-spacing: 0.03em;
}
.nav ul {
  list-style: none;
  display: flex;
  gap: 22px;
  margin: 0;
  padding: 0;
}
.nav a { color: var(--ink); text-decoration: none; font-size: 0.92rem; }
.nav a:hover { color: var(--steel); }
.btn {
  display: inline-block;
  background: var(--steel);
  color: #fff;
  padding: 10px 20px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  border: none;
  cursor: pointer;
}
.btn:hover { background: var(--steel-dark); }
.btn.secondary {
  background: transparent;
  color: var(--steel);
  border: 1.5px solid var(--steel);
}
.btn.secondary:hover { background: #eef2f6; }
.btn[aria-disabled="true"] {
  background: #aebac5;
  color: #f3f5f7;
  box-shadow: none;
  cursor: not-allowed;
}
.btn[aria-disabled="true"]:hover { background: #aebac5; }

main { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

section { padding: 64px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: none; }

.hero { padding-top: 72px; text-align: center; }
.hero h1 {
  font-size: 2.4rem;
  line-height: 1.25;
  color: var(--steel-dark);
  max-width: 760px;
  margin: 0 auto 18px;
}
.hero p.lede {
  font-size: 1.12rem;
  color: var(--dim);
  max-width: 640px;
  margin: 0 auto 30px;
}
.hero .cta-row { display: flex; gap: 14px; justify-content: center; margin-bottom: 14px; }
.hero .assurance { font-size: 0.85rem; color: var(--dim); }

h2.section-title {
  font-size: 1.5rem;
  color: var(--steel-dark);
  margin-bottom: 8px;
}
p.section-sub { color: var(--dim); margin-top: 0; margin-bottom: 32px; max-width: 680px; }

.grid3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 22px 22px;
}
.card h3 { margin-top: 0; font-size: 1.02rem; color: var(--steel-dark); }
.card p { color: var(--dim); font-size: 0.94rem; margin-bottom: 0; }

.notdo ul { padding-left: 20px; }
.notdo li { margin-bottom: 8px; color: var(--ink); }
.notdo li::marker { color: var(--accent); }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.step .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--steel);
  color: #fff;
  font-weight: 700;
  margin-bottom: 10px;
  font-size: 0.9rem;
}
.step h3 { margin: 6px 0 6px; font-size: 1rem; }
.step p { color: var(--dim); font-size: 0.92rem; }

.sample-panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}
.sample-panel .sample-note {
  background: #fbf3e2;
  color: #7a5410;
  font-size: 0.82rem;
  padding: 10px 20px;
  border-bottom: 1px solid #f0dfb8;
}
.sample-body {
  padding: 22px 26px;
  font-size: 0.92rem;
}
.sample-body h1, .sample-body h3 { color: var(--steel-dark); }
.sample-body h1 { font-size: 1.15rem; margin-top: 0; }
.sample-body h3 { font-size: 1rem; margin-top: 20px; }
.sample-body ul { padding-left: 20px; }
.sample-body li { margin-bottom: 6px; }
.sample-body strong { color: var(--steel-dark); }
details.full-sample summary {
  cursor: pointer;
  padding: 14px 26px;
  font-weight: 600;
  color: var(--steel);
  border-top: 1px solid var(--line);
  background: #f2f5f8;
}
details.full-sample .sample-body { max-height: 640px; overflow-y: auto; }

.pricing {
  display: flex;
  justify-content: center;
}
.price-card {
  background: var(--card);
  border: 1.5px solid var(--steel);
  border-radius: 12px;
  padding: 36px 44px;
  text-align: center;
  max-width: 380px;
}
.price-card .price {
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--steel-dark);
}
.price-card .price .unit { font-size: 1rem; color: var(--dim); font-weight: 500; }
.price-card .price-note {
  font-size: 0.82rem;
  color: var(--accent);
  margin-bottom: 18px;
}
.price-card ul { text-align: left; padding-left: 20px; color: var(--dim); font-size: 0.9rem; }
.price-card .btn { width: 100%; margin-top: 10px; }

.waitlist-panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 28px 32px;
  max-width: 520px;
}
.waitlist-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.waitlist-form input[type="email"] {
  flex: 1 1 240px;
  padding: 11px 14px;
  border: 1.5px solid var(--line);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
}
.waitlist-form input[type="email"]:focus {
  outline: none;
  border-color: var(--steel);
}
.waitlist-form .btn {
  border: none;
  cursor: pointer;
  font-family: inherit;
}
.waitlist-note {
  font-size: 0.82rem;
  color: var(--dim);
  margin: 14px 0 0;
}

details.faq {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
details.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.98rem;
}
details.faq p { color: var(--dim); margin: 10px 0 4px; }

footer.site {
  padding: 40px 24px 60px;
  text-align: center;
  color: var(--dim);
  font-size: 0.85rem;
}
footer.site a { color: var(--steel); }

@media (max-width: 820px) {
  .grid3, .steps { grid-template-columns: 1fr; }
  .nav ul { display: none; }
  .hero h1 { font-size: 1.9rem; }
}