* {
  box-sizing: border-box;
}

:root {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  color: #1f2937;
  background: #f8fafc;
}

body {
  margin: 0;
  line-height: 1.75;
}

.container {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 40px;
}

.hero,
header {
  margin-bottom: 32px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #64748b;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(2rem, 8vw, 3.4rem);
  line-height: 1.15;
}

h2 {
  margin-top: 0;
  font-size: 1.35rem;
}

h3 {
  margin-bottom: 6px;
  font-size: 1.05rem;
}

.lead {
  margin: 0;
  font-size: 1.05rem;
  color: #475569;
}

.card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 18px;
  padding: 24px;
  margin: 20px 0;
}

.links {
  display: grid;
  gap: 12px;
}

.links a,
.back {
  color: #334155;
  text-decoration: none;
}

.links a {
  display: block;
  padding: 14px 16px;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  background: #f8fafc;
}

.links a:hover,
.back:hover {
  text-decoration: underline;
}

ul {
  padding-left: 1.3rem;
}

.date {
  margin-top: 32px;
  color: #64748b;
  font-size: 0.9rem;
}

footer {
  padding-top: 28px;
  color: #94a3b8;
  font-size: 0.85rem;
  text-align: center;
}