/* skinU 診断ロジック 説明CSS v3 - Readability Update */
:root {
  --ink: #0b1025;
  --muted: #4b5563;
  --border: #e5e7eb;
  --bg: #f9fafb; /* Slightly off-white for less glare */
  --card-bg: #ffffff;
  --accent: #0ea5e9;
  --maxw: 980px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px; /* Set base for rem units */
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", Roboto, Arial, sans-serif;
  font-size: 1.05rem; /* Slightly larger base font size */
  line-height: 1.75; /* Comfortable line spacing */
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2rem 1.5rem; /* More vertical padding */
}

h1, h2, h3, p, ul, ol, pre, .note, .grid {
  margin-top: 0;
  margin-bottom: 1.25rem; /* Consistent bottom margin for block elements */
}

h1 {
  font-size: 1.8rem;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

h2 {
  font-size: 1.5rem;
  line-height: 1.4;
  margin-top: 2.5rem; /* More space before sections */
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

h4 {
  font-size: 1.3rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid #0ea5e9;
  margin-top: 2.5rem;
  margin-bottom: 1.25rem;
}

p:last-child,
ul:last-child,
ol:last-child {
    margin-bottom: 0; /* Remove margin from last element in a container */
}

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

li {
  margin-bottom: 0.5rem;
}

.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.card {
  border: 1px solid var(--border);
  background: var(--card-bg);
  border-radius: 12px;
  padding: 1.5rem; /* More padding */
  margin-bottom: 1.5rem;
}

.note {
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 1rem;
  font-size: 0.95rem;
}

code, pre {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  background: #f7f7f9;
  border: 1px solid #eee;
  border-radius: 6px;
  font-size: 0.9rem;
}

code {
  padding: 0.2em 0.4em;
}

pre {
  padding: 1rem;
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin-top: 1rem;
  font-size: 0.95rem; /* Larger table font */
}

th, td {
  border: 1px solid var(--border);
  padding: 0.75rem; /* More padding in cells */
  text-align: left;
}

th {
  background: #f3f4f6;
  font-weight: 600;
}

.grid {
  display: grid;
  gap: 1.5rem; /* More gap */
}

.grid-2 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.tiny {
  font-size: 0.8rem;
  color: var(--muted);
}

@media print {
  html {
    font-size: 12pt;
  }
  .wrap {
    padding: 0;
    max-width: 100%;
  }
  .card, .note {
    page-break-inside: avoid;
    border: 1px solid #ccc;
    background: #fff;
  }
  h2 {
    margin-top: 2rem;
  }
}
/* 参考文献セクション */
#references {
  background: #fafafa;
  padding: 2rem;
  border-radius: 10px;
  border: 1px solid #ddd;
  font-family: "Noto Sans JP", sans-serif;
  line-height: 1.6;
}

#references h2 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid #444;
  padding-bottom: 0.5rem;
}

#references ul {
  list-style-type: decimal;
  padding-left: 1.5rem;
}

#references li {
  margin-bottom: 1.5rem;
  padding: 0.5rem 0;
  border-bottom: 1px dashed #ccc;
}

#references li:last-child {
  border-bottom: none;
}

#references a {
  color: #0066cc;
  text-decoration: underline;
  word-break: break-all; /* URLが長くても折り返す */
}

#references a:hover {
  color: #004080;
  text-decoration: none;
}

#references i {
  font-style: italic;
  color: #444;
}

#references br + * {
  color: #333;
  display: block;
  margin-top: 0.3rem;
  font-size: 0.95rem;
}