body {
  padding: 0;
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  line-height: 1.8;
  background-color: #fff;
  color: #333;
}

header {
  margin-bottom: 2rem;
  height: 60px;
}

main {
  max-width: 800px;
  padding: 60px 10px 0 10px;
  margin: auto;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #fff;
  z-index: 1000;
  border-bottom: 1px solid #ddd;
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 20px;
}

.site-title {
  font-size: 1.4em;
  margin: 0;
}

.site-title a {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}


/* ハンバーガーメニュー初期状態 */
.menu-icon {
  background: none;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 0;
}

.menu-icon .bar {
  height: 3px;
  width: 100%;
  background: #333;
  border-radius: 2px;
  transition: 0.3s;
}

/* ×に変形 */
.menu-icon.active .bar:nth-child(1) {
  transform: rotate(45deg) translate(8px, 5px);
}

.menu-icon.active .bar:nth-child(2) {
  opacity: 0;
}

.menu-icon.active .bar:nth-child(3) {
  transform: rotate(-45deg) translate(8px, -5px);
}

/* ↑ハンバーガーメニュー */

/* ↓メニュー */
.nav-menu {
  display: none;
  position: fixed;
  top: 60px;
  right: 0;
  width: 240px;
  background: #fff;
  box-shadow: -2px 0 5px rgba(0, 0, 0, 0.2);
  padding: 5px 20px;
}

.nav-menu.show {
  display: block;
}

.nav-menu ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-menu li {
  margin: 0 0 10px 0;
  font-weight: bold;
}

.nav-menu li a {
  text-decoration: none;
  color: #333;
  display: block;
  padding-left: 1em;
  font-weight: normal;
}

.nav-menu li.menu-section {
  font-weight: bold;
  color: #777;
  padding-left: 0;
  margin-top: 20px;
  margin-bottom: 5px;
}

.nav-menu li a:hover {
  background: #f0f0f0;
}

/* ↑メニュー */

/* ↓パンくず */
.breadcrumb {
  font-size: 0.9em;
  margin: 16px 0;
}

.breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
}

.breadcrumb li+li::before {
  content: "›";
  margin: 0 8px;
  color: #666;
}

.breadcrumb a {
  text-decoration: none;
  color: #0073e6;
}

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

/* ↑パンくず */

h1,
h2,
h3 {
  color: #2c3e50;
  margin-top: 20px;
}

.toc ul {
  padding-left: 1.2rem;
  margin: 0 10px;
}

.toc a {
  color: #1976D2;
  text-decoration: none;
}

.step,
.faq {
  margin: 0;
  padding: 1rem 0;
}

.step {
  border-bottom: 1px solid #ddd;
}

.guide-img-content {
  max-width: 600px;
  margin: 0 auto;
}

.try-img-content {
  max-width: 800px;
  margin: 0 auto;
}

img.guide-img {
  width: 100%;
  border: 1px solid #ccc;
  margin-top: 0.5rem;
}

.faq {
  background: #e8ffe0;
  border-left: 5px solid #4cff00;
  padding: 10px 0 10px 25px;
  margin-left: 20px;
}

.table-scroll {
  overflow-x: scroll;
}

.compare-table {
  width: 750px;
  border-collapse: collapse;
  font-size: 16px;
  margin: auto;
}

.compare-table th,
.compare-table td {
  border: 1px solid #ccc;
  padding: 12px;
  text-align: left;
}

.compare-table th {
  background-color: #f5f5f5;
  font-weight: bold;

}

.compare-table2 th {
  width: 50%;
}

.compare-table3 th {
  width: 33%;
}

.compare-table4 th {
  width: 25%;
}


.section {
  margin-bottom: 0;
  padding: 60px 0 16px 0;
}

.section h2,
.section h3,
.section p,
.section ul {
  padding-left: 10px;
}

.section h2 {
  background-color: #ddd;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* ページリンク */
.page-links {
  background: #fff8e1;
  border-left: 5px solid #ffb300;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 5px 10px;
  margin: 5px 20px;
  transition: transform 0.2s ease;
}

.page-links a {
  color: #2c3e50;
  text-decoration: none;
  display: inline-block;
  /* transformを効かせるため */
}

.p-link {
  color: #1976D2;
}

.page-links:hover {
  transform: translateX(10px);
}

.page-links p {
  margin: 0;
}

.highlight {
  background: #e8ffe0;
  border-left: 5px solid #4cff00;
  padding: 5px 25px;
  margin: 0, 0, 0, 20px;
}

.highlight h2{
  margin: 0;
}

.list-area {
  background: #e0e8ff;
  border-left: 4px solid #004cff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 5px 15px;
  margin: 0 15px;
  list-style-type: square;
}

.list-area li::marker {
  color: #004cff;
}


.muted-box {
  background: #f9f9f9;
  border-left: 4px solid #cccccc;
  padding: 0.5em 1em;
  margin: 1em 0;
  color: #333;
}

.muted-box h3 {
  margin-top: 0;
  margin-bottom: 0.5em;
}

.muted-box p {
  margin-top: 0.5em;
  margin-bottom: 0;
}

.tags-btn {
  display: inline-block;
  background: #333;
  color: #fff;
  padding: 0.2em 0.5em;
  margin-right: 0.5em;
  border-radius: 4px;
  font-size: 0.85em;
}

.section ul {
  padding-left: 1.5em;
}

.section ul li {
  margin-bottom: 0.5em;
}

.article-meta {
  font-size: 0.9em;
  color: #666;
  margin-bottom: 1em;
}

.tags span {
  background: #eee;
  padding: 4px 8px;
  margin-right: 5px;
  border-radius: 3px;
  font-size: 0.8em;
}

img.article-thumb {
  max-width: 100%;
  margin-bottom: 1em;
  border-radius: 4px;
  border: 1px solid #ccc;
}

/* ↓step-card */
.step-card {
  border: 2px solid #4285F4;
  padding: 1.5em;
  border-radius: 8px;
  margin-bottom: 2em;
  background: #f9f9f9;
}

.step-card h2 span {
  display: inline-block;
  background: #4285F4;
  color: #fff;
  padding: 0.2em 0.6em;
  margin-right: 0.5em;
  border-radius: 4px;
  font-size: 0.8em;
}

.btn-more {
  display: inline-block;
  margin-top: 1em;
  background: #4285F4;
  color: #fff;
  padding: 0.5em 1em;
  text-decoration: none;
  border-radius: 4px;
}

.btn-more:hover {
  background: #3367D6;
}

/* ↑step card */

/* ↓ コードエディタ用 */
.code-container {
  position: relative;
  background: #2d2d2d;
  border-radius: 8px;
  margin: 1rem 0;
  overflow-x: auto;
}

.copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: #50fa7b;
  color: #282a36;
  border: none;
  padding: 0.3rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  font-weight: bold;
}

pre {
  margin: 0;
  padding: 1rem;
}

/* ↑ コードエディタ用 */

.article-item {
  margin-bottom: 1.5em;
}

.tag {
  display: inline-block;
  background: #333;
  color: #fff;
  padding: 0.2em 0.5em;
  margin-right: 0.5em;
  border-radius: 4px;
  font-size: 0.85em;
}


.definition-list {
  margin: 0 20px;
  padding: 5px 10px;

  background: #e0e8ff;
  border-left: 4px solid #004cff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.definition-list dt {
  font-weight: bold;
}

.definition-list dd {
  margin: 0 0 5px 20px;
  line-height: 1.6;
}

/* ↓ 更新履歴 */

dl.update-list {
  margin-left: 20px;
  
  /* background: #d6d6d6; */
  border-left: 4px solid #666666;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

dl.update-list dt {
  padding-left: 10px;
  margin-top: 10px;
}

dl.update-list dd {
  padding: 0 0 5px 25px;
  margin: 0;
  border-bottom: 1px solid #333;
}

dl.update-list a {
  color: #1976D2;
  text-decoration: none;
}

/* ↑ 更新履歴 */


/* ↓フッター */
.site-footer {
  background-color: #fff;
  padding: 20px 0;
  font-size: 14px;
  border-top: 1px solid #ddd;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.site-footer a {
  color: #333;
  text-decoration: none;
  transition: color 0.3s;
}

.site-footer a:hover {
  color: #ffb300;
  /* 明るめアクセント */
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

.footer-copy {
  margin-bottom: 10px;
}

.footer-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.footer-nav li {
  margin: 0;
}

/* ↑フッター */