:root {
  --ink: #1c2430;
  --muted: #5b6675;
  --line: #e3e7ee;
  --bg: #f7f8fa;
  --card: #ffffff;
  --accent: #1f5fa8;
  --badge-bg: #eef3f9;
  --badge-ink: #1f5fa8;
  --soon-bg: #fdf3e3;
  --soon-ink: #8a5a12;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

header.site {
  padding: 56px 0 8px;
}

header.site h1 {
  font-size: 2rem;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

header.site p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 42rem;
}

section {
  padding: 28px 0 4px;
}

section h2 {
  font-size: 1.25rem;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}

section .section-note {
  color: var(--muted);
  margin: 0 0 16px;
  font-size: 0.95rem;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 640px) {
  .grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 960px) {
  .grid { grid-template-columns: 1fr 1fr 1fr; }
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  text-decoration: none;
  color: inherit;
}

a.card:hover {
  border-color: var(--accent);
}

a.card:focus-visible {
  border-color: var(--accent);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.card p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.93rem;
}

.badge {
  display: inline-block;
  align-self: flex-start;
  margin-top: auto;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--badge-bg);
  color: var(--badge-ink);
}

.badge.soon {
  background: var(--soon-bg);
  color: var(--soon-ink);
}

.card .detail {
  display: block;
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--muted);
}

.toolkit-list {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 6px 18px;
  margin-top: 14px;
}

.toolkit-list ul {
  list-style: none;
  margin: 0;
  padding: 0;
  columns: 1;
}

@media (min-width: 640px) {
  .toolkit-list ul { columns: 2; column-gap: 40px; }
}

.toolkit-list li {
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  break-inside: avoid;
  font-size: 0.93rem;
}

.toolkit-list .tname { font-weight: 600; }
.toolkit-list .tdesc { color: var(--muted); }

footer.site {
  margin-top: 48px;
  border-top: 1px solid var(--line);
  padding: 22px 0 40px;
  color: var(--muted);
  font-size: 0.88rem;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  justify-content: space-between;
}

footer.site a {
  color: var(--muted);
  text-decoration: none;
}

footer.site a:hover { text-decoration: underline; }