.article-body h1,
.article-body h2,
.article-body h3,
.article-body h4,
.article-body h5,
.article-body h6 {
  font-weight: 700;
  color: #111827;
}

.article-body h1 {
  margin: 2rem 0 1rem;
  font-size: 1.75rem;
  line-height: 1.35;
}

.article-body h2 {
  margin: 1.75rem 0 0.75rem;
  font-size: 1.35rem;
  line-height: 1.45;
}

.article-body h3 {
  margin: 1.35rem 0 0.6rem;
  font-size: 1.12rem;
  line-height: 1.5;
}

.article-body h4 {
  margin: 1.15rem 0 0.5rem;
  font-size: 1rem;
  line-height: 1.55;
}

.article-body h5,
.article-body h6 {
  margin: 1rem 0 0.45rem;
  font-size: 0.95rem;
  line-height: 1.55;
  color: #374151;
}

.article-body p {
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.85;
  color: #374151;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

.article-body ul {
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

.article-body li {
  margin: 0.35rem 0;
  line-height: 1.75;
  color: #374151;
}

.article-body li > input[type="checkbox"] {
  margin-right: 0.5rem;
}

.article-body a {
  color: #2563eb;
  text-decoration: none;
  word-break: break-word;
}

.article-body a:hover {
  color: #1d4ed8;
  text-decoration: underline;
}

.article-body blockquote {
  margin: 1rem 0;
  border-left: 4px solid #3b82f6;
  background: #eff6ff;
  padding: 0.75rem 1rem;
  color: #1f2937;
}

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

.article-body code {
  border-radius: 0.25rem;
  background: #f3f4f6;
  padding: 0.12rem 0.35rem;
  font-size: 0.9em;
  color: #be123c;
}

.article-body pre {
  margin: 1rem 0;
  overflow-x: auto;
  border-radius: 0.5rem;
  background: #111827;
  padding: 1rem;
}

.article-body pre code {
  background: transparent;
  padding: 0;
  color: #f9fafb;
}

.article-body table {
  width: 100%;
  margin: 1rem 0;
  border-collapse: collapse;
  font-size: 0.92rem;
  line-height: 1.6;
}

.article-body th,
.article-body td {
  border: 1px solid #e5e7eb;
  padding: 0.55rem 0.65rem;
  text-align: left;
  vertical-align: top;
}

.article-body th {
  background: #f9fafb;
  font-weight: 700;
  color: #111827;
}

.article-body hr {
  margin: 1.5rem 0;
  border: 0;
  border-top: 1px solid #e5e7eb;
}

.article-body del {
  color: #6b7280;
}

.article-body sup,
.article-body sub {
  font-size: 0.75em;
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 0.5rem;
  display: block;
  margin: 1.25rem auto 0;
}

.article-body .article-image-caption {
  display: block;
  margin-top: 0.5rem;
  text-align: center;
  font-size: 0.82rem;
  line-height: 1.6;
  color: #6b7280;
}


*{box-sizing:border-box}html{color-scheme:light}body{margin:0;background:#f9fafb;color:#111827;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.6;letter-spacing:0}a{color:inherit;text-decoration:none}button,input{font:inherit}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #0f766e;outline-offset:3px}.site-header{max-width:1152px;margin:auto;padding:22px 20px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid #e5e7eb}.brand{font-size:22px;font-weight:700;white-space:nowrap}.site-header nav{display:flex;flex-wrap:wrap;gap:20px;font-size:14px}.site-header nav a[aria-current],a:hover{color:#0f766e}.library{max-width:1152px;margin:auto;padding:32px 20px}.library-heading{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;border-bottom:1px solid #e5e7eb;padding-bottom:24px}.library-heading h1{font-size:30px;margin:0;line-height:1.4}.library-heading form{display:flex;gap:8px;width:320px;max-width:100%}input[type=search]{width:100%;min-width:0;border:1px solid #d1d5db;border-radius:4px;padding:8px 12px;background:white}button{display:flex;align-items:center;justify-content:center;width:42px;height:42px;flex:none;border:0;border-radius:4px;background:#0f766e;color:white;cursor:pointer}.result-count{font-size:14px;color:#6b7280}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.card{min-width:0;background:#fff;border:1px solid #e5e7eb;border-radius:8px;overflow:hidden;display:block}.card:hover{border-color:#0f766e}.cover{width:100%;aspect-ratio:16/9;object-fit:cover;background:#f3f4f6;display:block}.card-body{padding:20px}.meta{display:flex;flex-wrap:wrap;gap:14px;font-size:12px;color:#6b7280}.card h2{font-size:18px;line-height:1.6;margin:12px 0;color:#111827;overflow-wrap:anywhere}.card p{font-size:14px;line-height:1.8;color:#4b5563;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:12px 0}.keywords{font-size:12px;color:#6b7280;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.pagination{display:flex;justify-content:center;align-items:center;gap:20px;margin:32px 0;font-size:14px}.pagination a,.pagination>span:empty{width:40px;height:40px;display:flex;align-items:center;justify-content:center}.pagination a{border:1px solid #d1d5db;border-radius:4px}.empty{padding:40px 0;color:#6b7280}.detail{max-width:800px;margin:auto;padding:32px 20px}.breadcrumb{font-size:14px;color:#6b7280;display:flex;gap:8px;flex-wrap:wrap}.article-header{padding:28px 0;border-bottom:1px solid #e5e7eb}.article-header h1{font-size:30px;line-height:1.45;margin:16px 0;overflow-wrap:anywhere}.article-header p{color:#4b5563;line-height:1.8}.tags{display:flex;flex-wrap:wrap;gap:12px;font-size:13px;color:#0f766e}.article-body{padding:20px 0;min-width:0;overflow-wrap:anywhere}.article-body table{display:block;max-width:100%;overflow:auto}.article-body pre{max-width:100%}.article-body h2:first-child{margin-top:16px}.channels,.related{margin-top:32px;padding:24px 0;border-top:1px solid #e5e7eb}.channels figure{margin:0}.channels img{object-fit:contain;max-width:100%}.channels figcaption{font-size:14px;color:#4b5563;margin-top:8px}.related h2{font-size:20px}.related>a{display:block;padding:8px 0;color:#0f766e}.site-footer{max-width:1152px;margin:auto;padding:24px 20px;border-top:1px solid #e5e7eb;color:#6b7280;font-size:14px}.hljs-keyword,.hljs-selector-tag{color:#9d174d}.hljs-string,.hljs-attr{color:#047857}.hljs-number,.hljs-title{color:#1d4ed8}.hljs-comment{color:#6b7280}@media(max-width:900px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.site-header{align-items:flex-start;flex-direction:column;gap:12px}.site-header nav{gap:16px}.grid{grid-template-columns:minmax(0,1fr)}.library,.detail{padding:24px 16px}.library-heading form{width:100%}.article-header h1,.library-heading h1{font-size:26px}}
/* Channel codes retain their aspect ratio and names wrap on narrow screens. */
.channels{display:flex;flex-wrap:wrap;gap:32px}.channels figure{flex:0 1 240px;min-width:0;max-width:100%}.channels img{display:block;width:160px;height:160px;object-fit:contain}.channels figcaption{overflow-wrap:anywhere}