/* SCS ツールメニュー */
:root {
  --ink: #1b2433;
  --muted: #5d6b7e;
  --line: #d9e1ea;
  --canvas: #f4f6f9;
  --surface: #ffffff;
  --navy: #1b4f78;
  --navy-dark: #123854;
  --navy-soft: #e7f0f7;
  --cyan: #16a6b6;
  --ext-bg: #fff4e8;
  --ext-line: #f0c08f;
  --radius: 10px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", "Meiryo UI", "Meiryo", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.7;
}
h1, h2, h3, p { margin: 0; }
:focus-visible { outline: 3px solid #1b6fd1; outline-offset: 2px; }

.mn-header { padding: 28px 24px; background: var(--navy-dark); color: #fff; }
.mn-header h1 { font-size: 1.6rem; max-width: 1100px; margin: 0 auto 6px; }
.mn-header p { max-width: 1100px; margin: 0 auto; opacity: 0.88; }

.mn-main { max-width: 1100px; margin: 0 auto; padding: 24px 24px 40px; }

.mn-group + .mn-group { margin-top: 32px; }
.mn-group h2 {
  font-size: 1.1rem; color: var(--navy-dark);
  padding-left: 10px; border-left: 4px solid var(--cyan);
  margin-bottom: 14px;
}

.mn-grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.mn-card {
  display: flex; flex-direction: column; gap: 10px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: 0 1px 2px rgba(18, 56, 84, 0.06);
}
.mn-card h3 { font-size: 1.05rem; color: var(--navy); }
.mn-card p { color: var(--muted); font-size: 0.92rem; flex: 1; }
.mn-card--ext { background: var(--ext-bg); border-color: var(--ext-line); }

.mn-tag {
  display: inline-block; margin-left: 6px; padding: 0 8px;
  font-size: 0.72rem; font-weight: normal; vertical-align: middle;
  border: 1px solid var(--ext-line); border-radius: 999px; color: #8a5a22; background: #fff;
}

.mn-btn {
  align-self: flex-start;
  display: inline-block; padding: 8px 22px;
  background: var(--navy); color: #fff; text-decoration: none;
  border-radius: 6px; font-weight: bold;
}
.mn-btn::after { content: " ↗"; font-weight: normal; }
.mn-btn:hover { background: var(--navy-dark); }

.mn-footer { text-align: center; color: var(--muted); font-size: 0.85rem; padding: 0 24px 32px; }

@media (max-width: 600px) {
  .mn-header { padding: 20px 16px; }
  .mn-header h1 { font-size: 1.3rem; }
  .mn-main { padding: 18px 16px 32px; }
}