@charset "UTF-8";

:root {
  --bg: #f7f9fc;
  --panel: #fff;
  --soft: #f1f5f9;
  --border: #dbe4ef;
  --text: #1f2937;
  --muted: #64748b;
  --primary: #1d4ed8;
  --shadow: 0 18px 40px rgba(15, 23, 42, .08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.8;
}

a {
  color: inherit;
  text-decoration: none;
}

.guide-page {
  padding: 48px 20px 72px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: .9rem;
}

.breadcrumb a {
  color: var(--primary);
}

.page-shell {
  padding: 32px 28px 40px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.page-header {
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 2vw, 2.8rem);
  line-height: 1.3;
}

.intro {
  margin: 16px 0 0;
  color: var(--muted);
}

li {
  list-style-position: inside;
}

.guide-nav {
  display: grid;
  gap: 16px;
}

.guide-card {
  display: grid;
  gap: 4px;
  padding: 22px 24px;
  background: var(--soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: transform .2s, border-color .2s, box-shadow .2s;
}

.guide-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: 0 10px 24px rgba(29, 78, 216, .12);
}

.guide-card strong {
  color: var(--primary);
  font-size: 1.2rem;
}

.guide-card span {
  color: var(--muted);
}

@media (max-width:700px) {
  .guide-page {
    padding: 32px 16px 56px;
  }

  .page-shell {
    padding: 24px 16px 28px;
  }
}