*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  background-color: #f0f4f7;
  color: #333333;
  font-family: "MS PGothic", "Hiragino Kaku Gothic ProN", sans-serif;
  padding: 10px;
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
}

/* メインレイアウト：横幅を100%にしつつ最大幅を制限 */
.main-layout {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  background-color: #ffffff;
  border: 1px solid #99aac0;
  padding: 15px;
}

h1 {
  color: #004080;
  text-align: center;
  font-size: 20px;
  margin: 10px 0;
  font-family: "MS UI Gothic", sans-serif;
}

/* 共通の見出しパーツ */
.section-title {
  font-size: 14px;
  font-weight: bold;
  color: #004080;
  border-left: 4px solid #004080;
  padding-left: 6px;
  margin: 25px 0 10px 0;
  background-color: #f5f8fa;
}

.sub-section-title {
  font-size: 13px;
  font-weight: bold;
  color: #a04000;
  margin: 15px 0 5px 0;
  border-bottom: 1px dotted #a04000;
}

/* パンくずリスト */
.breadcrumb {
  font-size: 11px;
  margin-bottom: 10px;
  color: #555;
}
.breadcrumb a {
  color: #0066cc;
  text-decoration: underline;
}

/* インフォバー */
.info-bar {
  background-color: #e6eef4;
  color: #004080;
  border: 1px dashed #99aac0;
  padding: 6px;
  font-size: 12px;
  text-align: center;
  font-weight: bold;
  margin-bottom: 15px;
}

/* リンクメニュー */
.content-links {
  margin: 15px 0;
  text-align: center;
  background-color: #f9fbfd;
  border-top: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
  padding: 8px 5px;
  word-break: break-all;
}
.content-links a {
  color: #0066cc;
  text-decoration: underline;
  margin: 3px 8px;
  display: inline-block;
}
.content-links a:visited {
  color: #660099;
}
.content-links a:hover {
  color: #ff6600;
}

.link-list {
  margin: 20px 0;
  padding: 0;
  list-style: none;
}
.link-item {
  border-bottom: 1px dashed #ccc;
  padding: 10px 5px;
}
.link-item:last-child {
  border-bottom: none;
}
.link-site-name {
  font-weight: bold;
  font-size: 14px;
}
.link-site-name a {
  color: #0066cc;
  text-decoration: underline;
}
.link-site-name a:visited {
  color: #660099;
}
.link-site-name a:hover {
  color: #ff6600;
}
.link-desc {
  font-size: 12px;
  color: #555;
  margin-top: 3px;
  padding-left: 10px;
}

.tool-box,
.login-box {
  border: 1px solid #b5b5b5;
  background-color: #f7f7f7;
  padding: 15px;
  margin: 20px auto;
  width: 100%;
}
.tool-box {
  max-width: 420px;
}
.login-box {
  max-width: 380px;
}

.form-row {
  margin-bottom: 12px;
}
.form-row label {
  display: block;
  font-size: 12px;
  font-weight: bold;
  margin-bottom: 4px;
  color: #444;
}
.form-row input {
  width: 100%;
  padding: 4px;
  border: 1px solid #999999;
  background-color: #ffffff;
  font-family: "Courier New", Courier, monospace;
  font-size: 14px;
  letter-spacing: 1px;
}
.form-row textarea {
  width: 100%;
  height: 60px;
  padding: 4px;
  border: 1px solid #999999;
  background-color: #ffffff;
  font-family: sans-serif;
  font-size: 13px;
  resize: none;
}

/* ボタン関連 */
.btn-submit {
  width: 100%;
  padding: 6px;
  background: linear-gradient(to bottom, #ffffff 0%, #e0e0e0 100%);
  border: 1px solid #999999;
  color: #333;
  font-weight: bold;
  font-size: 12px;
  cursor: pointer;
}
.btn-submit:hover {
  background: #e8e8e8;
}
.btn-save {
  display: inline-block;
  margin-top: 10px;
  padding: 4px 15px;
  background: linear-gradient(to bottom, #ffffff 0%, #e0e0e0 100%);
  border: 1px solid #999999;
  color: #333;
  text-decoration: none;
  font-weight: normal;
  font-size: 11px;
  cursor: pointer;
}
.btn-save:hover {
  background: #e8e8e8;
}

.number-box {
  border: 1px solid #b5b5b5;
  background-color: #fafafa;
  padding: 15px;
  margin: 20px auto;
  width: 100%;
  word-break: break-all;
  font-family: "Courier New", Courier, monospace;
  font-size: 14px;
  letter-spacing: 1px;
  line-height: 1.8;
  box-shadow: inset 1px 1px 3px rgba(0, 0, 0, 0.05);
}

.result-zone {
  margin-top: 20px;
  text-align: center;
  padding: 15px;
  border: 1px solid #ccc;
  background-color: #fff;
  display: none;
}
#barcode-canvas {
  background-color: #fff;
  margin: 10px auto;
  display: block;
  width: 230px;
  height: 140px;
}
.result-zone img {
  max-width: 150px;
  height: 150px;
  margin-top: 10px;
  border: 1px solid #999;
  padding: 5px;
  background-color: #fff;
}

.attention-mark {
  color: #cc0000;
  font-weight: bold;
}

.tex-ul {
  margin: 5px 0 15px 0;
  padding-left: 20px;
}
.tex-ul li {
  margin-bottom: 5px;
}

.math-display-box {
  background-color: #fafafa;
  border: 1px solid #ccc;
  padding: 12px;
  margin: 10px 0;
  text-align: center;
  overflow-x: auto;
}

code {
  font-family: "Courier New", Courier, monospace;
  background-color: #f5f5f5;
  padding: 2px 4px;
  border: 1px solid #ddd;
  font-size: 12px;
  color: #c00;
}

pre {
  background-color: #f8f9fa;
  border: 1px solid #ced4da;
  padding: 8px;
  overflow-x: auto;
  font-family: "Courier New", Courier, monospace;
  font-size: 12px;
  line-height: 1.4;
  margin: 8px 0;
}

.tex-table-wrapper {
  width: 100%;
  overflow-x: auto;
  margin: 10px 0;
}
.tex-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.tex-table th,
.tex-table td {
  border: 1px solid #cbd5e1;
  padding: 6px;
  text-align: left;
}
.tex-table th {
  background-color: #e6eef4;
  color: #004080;
}

.memo-section {
  border: 1px solid #ddcd99;
  background-color: #fffcee;
  padding: 10px;
  font-size: 12px;
  margin-top: 25px;
  color: #555;
}

.notice-section,
.help-section {
  border: 1px solid #ddcd99;
  background-color: #fffcee;
  padding: 10px;
  font-size: 12px;
  margin-top: 20px;
  color: #555;
}
.help-section ul {
  margin: 5px 0 0 20px;
  padding: 0;
}

.highlight-box {
  border: 1px solid #b6d4fe;
  background-color: #f8f9fa;
  padding: 10px;
  margin: 10px 0;
  border-left: 4px solid #0d6efd;
}

footer {
  margin-top: 30px;
  border-top: 1px dashed #ccc;
  padding-top: 10px;
  text-align: center;
  font-size: 11px;
  color: #777;
}