:root {
  --bg: #fffaf8;
  --text: #2f2a2a;
  --muted: #6f6363;
  --main: #ef6f7a;
  --main-dark: #df4e63;
  --sub: #ffffff;
  --soft: #fff1f3;
  --line: #f2d9dd;
  --card: #ffffff;
  --shadow: 0 14px 40px rgba(176, 88, 104, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; }
.container {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}
.hero {
  background: linear-gradient(180deg, #fff8fa 0%, #fff1f4 100%);
  padding: 48px 0 28px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 28px;
  align-items: center;
}
.eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  padding: 6px 12px;
  border-radius: 999px;
  background: #ffe2e8;
  color: #b34659;
  font-size: 13px;
  font-weight: 700;
}
h1 {
  margin: 0 0 16px;
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.15;
}
.lead {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}
.hero-buttons, .cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 52px;
  padding: 0 20px;
  border-radius: 14px;
  font-weight: 700;
  transition: transform .15s ease, opacity .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); opacity: 0.95; }
.btn-main {
  background: var(--main);
  color: #fff;
  box-shadow: var(--shadow);
}
.btn-main:hover { background: var(--main-dark); }
.btn-sub {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
}
.wide { width: 100%; margin-top: 14px; }
.mini-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}
.mini-points li {
  padding: 8px 12px;
  background: rgba(255,255,255,.75);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
}
.screenshot-card {
  background: #fff;
  border: 1px solid #f0d5da;
  border-radius: 24px;
  padding: 14px;
  box-shadow: 0 22px 60px rgba(161, 86, 104, 0.16);
}
.hero-visual img {
  width: 100%;
  max-width: 520px;
  margin-left: auto;
  border-radius: 18px;
}
.section { padding: 36px 0; }
.section-soft { background: var(--soft); }
.section-title {
  margin: 0 0 18px;
  font-size: 28px;
}
.card, .offer-card, .cta-box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}
.card { padding: 26px; }
.intro p:last-child { margin-bottom: 0; }
.offer-grid, .info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.offer-card {
  padding: 24px;
}
.offer-card h3 { margin: 10px 0 10px; font-size: 24px; }
.offer-card p { color: var(--muted); }
.offer-card ul, .check-list {
  padding-left: 18px;
  margin: 0;
}
.label {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: #ffe1e5;
  color: #b33b53;
  font-size: 12px;
  font-weight: 700;
}
.label-sub {
  background: #fff1cf;
  color: #8f6413;
}
.cta-section { padding-top: 10px; padding-bottom: 46px; }
.cta-box {
  padding: 30px;
  text-align: center;
  background: linear-gradient(180deg, #fff 0%, #fff7f8 100%);
}
.footer {
  padding: 22px 0 40px;
}
.footer-inner {
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

@media (max-width: 820px) {
  .hero-grid,
  .offer-grid,
  .info-grid {
    grid-template-columns: 1fr;
  }
  .hero {
    padding-top: 28px;
  }
  .hero-visual img {
    max-width: 360px;
    margin: 0 auto;
  }
  .card, .offer-card, .cta-box, .screenshot-card { border-radius: 20px; }
}


.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.detail-card h3, .diary-box h3 { margin-top: 0; }
.diary-box { margin-top: 18px; }
.examples-grid { margin-top: 18px; }
.single-example { grid-template-columns: 1fr; max-width: 540px; }
.example-note {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff8fa;
  color: var(--text);
}
h4 {
  margin: 0 0 10px;
  font-size: 18px;
}
@media (max-width: 820px) {
  .detail-grid {
    grid-template-columns: 1fr;
  }
}