:root {
  --ink: #1c2b33;
  --ink-2: #5b6b76;
  --bg: #f2f5f7;
  --card: #ffffff;
  --line: #e2e8ec;
  --accent: #0e7c86;
  --accent-deep: #0a5e66;
  --on-accent: #ffffff;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;
  line-height: 1.8;
  padding: 24px 16px 60px;
}
main { max-width: 720px; margin: 0 auto; }
.hero { text-align: center; padding: 20px 0 8px; }
.hero img { width: 108px; height: 108px; border-radius: 24px; }
.eyebrow { color: var(--accent); font-weight: 800; font-size: 13px; letter-spacing: 0.12em; }
h1 { font-size: 30px; font-weight: 800; margin: 6px 0 14px; letter-spacing: 0.02em; }
h1.center { text-align: center; }
h2 {
  font-size: 19px; font-weight: 800; margin: 26px 0 6px;
  padding-left: 12px; border-left: 6px solid var(--accent);
}
p { margin: 6px 0; font-size: 15px; }
a { color: var(--accent-deep); font-weight: 700; }
section {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 16px 18px; margin: 14px 0;
}
.tagline { color: var(--ink-2); font-weight: 700; font-size: 16px; }
.note { font-size: 13px; color: var(--ink-2); }
.primary-button {
  display: inline-block; margin-top: 20px; background: var(--accent); color: var(--on-accent);
  text-decoration: none; font-weight: 800; padding: 12px 28px; border-radius: 999px;
}
.center-wrap { text-align: center; }
.steps { display: grid; gap: 10px; padding-top: 4px; }
.step { display: flex; gap: 12px; align-items: flex-start; }
.step b {
  flex: none; width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: var(--on-accent);
  font-size: 13px; display: flex; align-items: center; justify-content: center;
}
.step span { font-size: 15px; }
.caution {
  background: #fceceb; border: 1px solid #f2c9c6; border-radius: 12px;
  padding: 12px 14px; margin: 12px 0; font-size: 14px;
}