:root {
  --bg: #f5f0e8;
  --paper: #fffdf8;
  --ink: #223044;
  --muted: #667184;
  --line: #e2d8c8;
  --gold: #b8924b;
  --green: #47785f;
  --red: #b75d4a;
  --shadow: 0 20px 60px rgba(34, 48, 68, .13);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Noto Sans JP", "Hiragino Sans", sans-serif;
  line-height: 1.8;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid rgba(226, 216, 200, .8);
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(255, 253, 248, .92);
  backdrop-filter: blur(14px);
}

.brand {
  font-weight: 900;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
  font-weight: 800;
}

nav a {
  color: var(--muted);
  text-decoration: none;
}

main {
  overflow: hidden;
}

.hero,
section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 72px clamp(18px, 4vw, 40px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 1.04fr);
  gap: 42px;
  align-items: center;
  min-height: calc(100vh - 70px);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .14em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.35;
}

h1 {
  margin-bottom: 18px;
  max-width: 9.5em;
  font-size: clamp(34px, 3.9vw, 50px);
  letter-spacing: 0;
}

h1 span {
  display: block;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 3.5vw, 42px);
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.lead {
  color: var(--muted);
  font-size: 18px;
}

.hero-actions,
.final-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.primary,
.secondary {
  display: inline-grid;
  place-items: center;
  min-height: 48px;
  border-radius: 999px;
  padding: 0 22px;
  font-weight: 900;
  text-decoration: none;
}

.primary {
  color: white;
  background: var(--ink);
}

.secondary {
  border: 1px solid var(--line);
  background: var(--paper);
}

.small-note {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
}

.hero-visual {
  margin: 0;
}

.hero-visual img,
.demo img {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.problem,
.price {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 24px;
  align-items: start;
}

.problem ul,
.price-card,
.notes,
.feature-grid article,
.sample-reading article,
.flow li,
.faq details,
.final-cta {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  box-shadow: 0 12px 38px rgba(34, 48, 68, .08);
}

.problem ul {
  margin: 0;
  padding: 22px 22px 22px 42px;
}

.section-head {
  max-width: 760px;
  margin-bottom: 26px;
}

.section-head p:last-child {
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature-grid article {
  padding: 22px;
}

.feature-grid p,
.sample-reading p,
.notes p,
.faq p {
  color: var(--muted);
}

.sample-reading article {
  max-width: 880px;
  padding: 28px;
}

.sample-reading .sample-label {
  color: var(--gold);
  font-weight: 900;
}

.demo {
  max-width: 1180px;
}

.flow ol {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow li {
  min-height: 150px;
  padding: 18px;
  font-weight: 900;
}

.flow span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 18px;
  border-radius: 999px;
  color: white;
  background: var(--gold);
}

.price-card,
.notes {
  padding: 28px;
}

.price-value {
  margin: 12px 0 6px;
  font-size: clamp(42px, 6vw, 68px);
  font-weight: 900;
  line-height: 1;
}

.price-card ul {
  margin: 22px 0;
  padding-left: 22px;
}

.faq {
  max-width: 940px;
}

.faq details {
  padding: 18px 22px;
}

.faq details + details {
  margin-top: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 900;
}

.final-cta {
  display: grid;
  justify-items: start;
  max-width: 1040px;
  margin-bottom: 70px;
  padding: 36px;
  background: var(--ink);
  color: white;
}

.final-cta p {
  color: rgba(255, 255, 255, .78);
}

.final-cta .primary {
  color: var(--ink);
  background: white;
}

@media (max-width: 920px) {
  .site-header,
  .hero,
  .problem,
  .price {
    grid-template-columns: 1fr;
  }

  .site-header {
    display: grid;
  }

  nav {
    flex-wrap: wrap;
  }

  .feature-grid,
  .flow ol {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 620px) {
  .hero,
  section {
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .feature-grid,
  .flow ol {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }
}