:root {
  color-scheme: light;
  --bg: #fbfbfb;
  --paper: #ffffff;
  --ink: #1f2933;
  --muted: #66737f;
  --line: #e6eaee;
  --accent: #2a5b7a;
  --shadow: 0 20px 50px rgba(31, 41, 51, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  background: radial-gradient(circle at top, #ffffff 0%, #f4f7f9 55%, #eef2f5 100%);
  color: var(--ink);
  line-height: 1.7;
}

.page {
  max-width: 980px;
  margin: 0 auto;
  padding: 64px 20px 96px;
}

.hero {
  padding: 48px 40px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  text-align: left;
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
}

h1 {
  margin: 0 0 12px;
  font-family: inherit;
  font-size: clamp(2rem, 3vw, 2.6rem);
  letter-spacing: 0.04em;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.content {
  margin-top: 36px;
  display: grid;
  gap: 24px;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 30px;
  box-shadow: 0 12px 30px rgba(31, 41, 51, 0.05);
}

h2 {
  margin: 0 0 12px;
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--ink);
}

h3 {
  margin: 20px 0 8px;
  font-size: 1.1rem;
  color: var(--accent);
  font-weight: 600;
}

ul {
  margin: 0 0 12px;
  padding-left: 1.3rem;
  color: var(--ink);
}

li {
  margin-bottom: 6px;
}

p {
  margin: 0;
  color: var(--ink);
}

strong {
  font-weight: 600;
}

@media (max-width: 720px) {
  .page {
    padding: 48px 16px 72px;
  }

  .hero {
    padding: 32px 24px;
  }

  .card {
    padding: 22px 20px;
  }
}