/* KMIoT AI オンラインヘルプ — 共通スタイル */
:root {
  --blue-900: #143d8f;
  --blue-700: #2e62d3;
  --blue-500: #3b82f6;
  --blue-100: #e7f1ff;
  --blue-50: #f4f8ff;
  --ink-900: #0f172a;
  --ink-700: #334155;
  --ink-500: #64748b;
  --line: #d6e2f2;
  --card: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Meiryo UI", "Meiryo", sans-serif;
  color: var(--ink-900);
  background: #ffffff;
}

a { color: var(--blue-700); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: none;
  margin: 0;
  padding: 0 15px;
}

/* ===== ヘッダー ===== */
.site-header {
  background: var(--blue-500);
  border-bottom: none;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  gap: 12px;
  flex-wrap: wrap;
}

.brand {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.brand:hover { text-decoration: none; opacity: 0.9; }

/* ===== 折りたたみメニュー ===== */
.side-menu-group {
  border-bottom: 1px solid var(--line);
}

.side-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 8px 10px 8px 18px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  color: var(--ink-700);
  font-family: "Meiryo UI", "Meiryo", sans-serif;
}

.side-menu-toggle:hover {
  background: var(--blue-50);
}

.side-menu-toggle .arrow {
  font-size: 10px;
  transition: transform 0.2s;
}

.side-menu-group.open .arrow {
  transform: rotate(90deg);
}

.side-menu-children {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0 0 4px 14px;
}

.side-menu-group.open .side-menu-children {
  display: block;
}

.side-menu-children a {
  display: block;
  padding: 6px 10px;
  font-size: 14px;
  color: var(--ink-700);
}

.side-menu-children a:hover {
  background: var(--blue-50);
  text-decoration: none;
}

.side-menu-children a.active {
  background: var(--blue-100);
  color: var(--blue-900);
  font-weight: 600;
}

/* ===== レイアウト ===== */
.layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 18px;
  margin: 18px 0 0;
}

/* ===== サイドバー ===== */
.sidebar {
  background: aliceblue;
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 12px;
  height: fit-content;
  position: sticky;
  top: 12px;
  font-family: "Meiryo UI", "Meiryo", sans-serif;
}

.sidebar h3 {
  margin: 8px 0 6px;
  font-size: 14px;
  color: var(--blue-900);
  border-left: 4px solid #008080;
  padding-left: 8px;
}

.side-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.side-list li {
  border-bottom: 1px solid var(--line);
}

.side-list a {
  display: block;
  padding: 8px 10px 8px 18px;
  color: var(--ink-700);
  font-size: 14px;
}

.side-list a:hover { background: var(--blue-50); text-decoration: none; }
.side-list a.active { background: var(--blue-100); color: var(--blue-900); font-weight: 600; }

/* メニューアイコン */
.menu-icon {
  width: 24px;
  height: 24px;
  vertical-align: middle;
  margin-right: 6px;
  flex-shrink: 0;
  border: 1px solid silver;
  border-radius: 6px;
  padding: 4px;
}

.side-sub {
  list-style: none;
  margin: 0 0 8px;
  padding: 0 0 0 14px;
}

.side-sub li {
  font-size: 14px;
  color: var(--ink-500);
  padding: 6px 8px;
}

.side-sub li a {
  border: none;
  padding: 0;
  margin-left: 20px;
  font-size: 14px;
  color: var(--ink-700);
}

.side-section-title {
  font-size: 11px;
  color: var(--ink-500);
  padding: 10px 10px 4px;
  letter-spacing: 0.05em;
  border-bottom: none !important;
}

/* ===== メインコンテンツ ===== */
main {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

section {
  background: #ffffff;
  border: none;
  border-radius: 12px;
  padding: 18px 20px;
}

section h2 {
  margin: 0 0 12px;
  font-size: 18px;
  color: var(--blue-900);
  border-left: 4px solid var(--blue-500);
  padding-left: 10px;
}

section h3 {
  margin: 16px 0 8px;
  font-size: 15px;
  color: var(--ink-900);
}

section p, section li {
  color: var(--ink-700);
  line-height: 1.7;
}

/* ===== パンくず ===== */
.breadcrumb {
  font-size: 12px;
  color: var(--ink-500);
  margin-bottom: 12px;
  padding: 0 4px;
}

.breadcrumb a { color: var(--blue-700); }
.breadcrumb a:hover { text-decoration: underline; }

/* ===== ノート ===== */
.note {
  margin-top: 6px;
  font-size: 13px;
  color: var(--ink-700);
}
.note::before {
  content: "※注）";
}

/* ===== プレースホルダー ===== */
.img-placeholder {
  border: 1px dashed var(--line);
  background: #f8fbff;
  border-radius: 8px;
  padding: 18px;
  text-align: center;
  font-size: 12px;
  color: var(--ink-500);
  margin-top: 8px;
}
.screenshot {
  margin-top: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  width: 70%;
  height: auto;
}

/* ===== テーブル ===== */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
  font-size: 14px;
}

th, td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
}

th {
  background: var(--blue-50);
  color: var(--ink-900);
}

/* ===== 機能カードグリッド（ランディング用） ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.feature-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  transition: box-shadow 0.15s;
  color: inherit;
}

.feature-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  text-decoration: none;
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 15px;
  color: var(--blue-900);
}

.feature-card p {
  margin: 0;
  font-size: 13px;
  color: var(--ink-700);
  line-height: 1.6;
}

/* ===== フッター ===== */
footer {
  margin: 22px 0 0;
  background: var(--blue-500);
  border-top: none;
  color: #ffffff;
  font-size: 12px;
  padding: 16px 0;
}

.footer-title {
  font-size: 14px;
  font-weight: 700;
}

footer .container {
  display: grid;
  gap: 6px;
}

/* ===== レスポンシブ ===== */
@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}