:root {
  --primary: #0e4a8a;
  --primary-light: #1e6bb8;
  --accent: #f4a000;
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1a2433;
  --muted: #5a6878;
  --border: #d8dee9;
  --success: #2e7d32;
  --danger: #c62828;
  --code-bg: #1e1e2e;
  --code-fg: #e4e4e7;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  margin: 0;
  padding: 0;
}

header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  padding: 1.5rem 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

header h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
}

header .subtitle {
  margin-top: 0.3rem;
  font-size: 0.9rem;
  opacity: 0.85;
}

main {
  max-width: 960px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

.card {
  background: var(--card);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.05);
  border: 1px solid var(--border);
}

h2 {
  color: var(--primary);
  border-bottom: 3px solid var(--accent);
  padding-bottom: 0.5rem;
  margin-top: 0;
  font-size: 1.4rem;
}

h3 {
  color: var(--primary-light);
  margin-top: 1.8rem;
  font-size: 1.1rem;
  border-left: 4px solid var(--primary-light);
  padding-left: 0.8rem;
}

h4 {
  color: var(--text);
  margin-top: 1.2rem;
  font-size: 1rem;
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.menu-item {
  display: block;
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 1.2rem 1.5rem;
  text-decoration: none;
  color: var(--text);
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.menu-item:hover {
  border-color: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(14,74,138,0.15);
}

.menu-item .step-number {
  display: inline-block;
  background: var(--primary);
  color: white;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  text-align: center;
  line-height: 32px;
  font-weight: bold;
  margin-right: 0.5rem;
  font-size: 0.9rem;
}

.menu-item .step-title {
  font-weight: 600;
  font-size: 1.05rem;
  display: inline-block;
  vertical-align: middle;
}

.menu-item .step-desc {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 2rem 0;
  gap: 1rem;
}

.nav-btn {
  background: var(--primary);
  color: white;
  text-decoration: none;
  padding: 0.7rem 1.4rem;
  border-radius: 8px;
  font-size: 0.95rem;
  transition: background 0.2s;
  flex: 0 1 auto;
}

.nav-btn:hover {
  background: var(--primary-light);
}

.nav-btn.disabled {
  background: var(--border);
  color: var(--muted);
  pointer-events: none;
}

.nav-btn.home {
  background: var(--accent);
}

.nav-btn.home:hover {
  background: #d68a00;
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: var(--primary-light);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.alert {
  padding: 1rem 1.2rem;
  border-radius: 8px;
  margin: 1rem 0;
  border-left: 4px solid;
}

.alert-info {
  background: #e3f2fd;
  border-color: #1976d2;
  color: #0d47a1;
}

.alert-warn {
  background: #fff8e1;
  border-color: #f57c00;
  color: #e65100;
}

.alert-danger {
  background: #ffebee;
  border-color: var(--danger);
  color: #b71c1c;
}

.alert-success {
  background: #e8f5e9;
  border-color: var(--success);
  color: #1b5e20;
}

ol, ul {
  padding-left: 1.5rem;
}

ol li, ul li {
  margin-bottom: 0.5rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
}

th, td {
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border);
  text-align: left;
}

th {
  background: var(--primary);
  color: white;
  font-weight: 600;
}

tr:nth-child(even) td {
  background: #f8fafd;
}

code {
  background: #eef2f7;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
  color: #c2185b;
}

pre {
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 1rem 1.2rem;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.5;
}

pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.checklist {
  list-style: none;
  padding-left: 0;
}

.checklist li {
  padding-left: 2rem;
  position: relative;
  margin-bottom: 0.6rem;
}

.checklist li::before {
  content: "☐";
  position: absolute;
  left: 0.3rem;
  color: var(--primary);
  font-size: 1.2rem;
  line-height: 1.4;
}

.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: 0.4rem;
}

.tag-spo { background: #e1f5fe; color: #01579b; }
.tag-app { background: #f3e5f5; color: #6a1b9a; }
.tag-manual { background: #fff3e0; color: #e65100; }
.tag-cs { background: #fce4ec; color: #ad1457; }

footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}

.flow-diagram {
  background: #f0f4fa;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.5rem;
  margin: 1rem 0;
  font-family: monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  white-space: pre;
  overflow-x: auto;
}

.download-btn {
  display: inline-block;
  background: linear-gradient(135deg, #2e7d32 0%, #43a047 100%);
  color: white;
  text-decoration: none;
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: 0 2px 8px rgba(46,125,50,0.25);
  transition: all 0.2s;
  border: none;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(46,125,50,0.35);
  background: linear-gradient(135deg, #1b5e20 0%, #2e7d32 100%);
  color: white;
}

.contact-card {
  background: #e3f2fd;
  border-left: 4px solid #1976d2;
  padding: 1.2rem 1.5rem;
  border-radius: 8px;
  margin: 1rem 0;
}

.contact-card a.teams-btn {
  display: inline-block;
  background: #5059c9;
  color: white;
  text-decoration: none;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 0.5rem;
  transition: background 0.2s;
}

.contact-card a.teams-btn:hover {
  background: #3b4287;
  color: white;
}

.list-screenshot {
  margin: 1rem 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: #f8fafd;
  text-align: center;
}
.list-screenshot img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  cursor: zoom-in;
}
.list-screenshot figcaption {
  font-size: 0.85rem;
  color: var(--muted);
  padding: 0.5rem 1rem;
  background: #fff;
  border-top: 1px solid var(--border);
  text-align: left;
}

.role-badges {
  margin-top: 0.7rem;
  padding-top: 0.6rem;
  border-top: 1px dashed var(--border);
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.role {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  border-radius: 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  border: 1.5px solid;
}

.role-external {
  background: #fff3e0;
  color: #e65100;
  border-color: #ffb74d;
}

.role-nagaken {
  background: #fce4ec;
  color: #ad1457;
  border-color: #f48fb1;
}

.role-user {
  background: #e3f2fd;
  color: #0d47a1;
  border-color: #64b5f6;
}

.role-cloudpower {
  background: #e8eaf6;
  color: #283593;
  border-color: #7986cb;
}

.role-legend {
  margin-top: 1.2rem;
  padding: 0.9rem 1.2rem;
  background: #f8fafd;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}