/* 鴨川AI検索ラボ — 最小構成。JSなし。 */

:root {
  --ink:      #1a1a1a;
  --sub:      #666;
  --line:     #e0ddd6;
  --paper:    #fbfaf7;
  --accent:   #2c4a52;   /* 鴨川の水の色 */
  --mark:     #b8462f;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans",
               "Noto Sans JP", "Yu Gothic", sans-serif;
  font-size: 17px;
  line-height: 1.85;
  font-feature-settings: "palt";
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- header --- */

header {
  border-bottom: 1px solid var(--line);
  padding: 28px 0;
  margin-bottom: 56px;
}

header .wrap {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
}

.brand {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink);
}

.brand span {
  display: block;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--sub);
  text-transform: uppercase;
  margin-top: 3px;
}

nav a {
  color: var(--sub);
  text-decoration: none;
  margin-left: 18px;
  font-size: 14px;
}

nav a:hover { color: var(--accent); }

.langs {
  font-size: 12px;
  color: var(--sub);
}

.langs a {
  color: var(--sub);
  text-decoration: none;
  margin-left: 8px;
}

.langs a[aria-current="true"] {
  color: var(--ink);
  font-weight: 700;
}

/* --- type --- */

h1 {
  font-size: 30px;
  line-height: 1.45;
  letter-spacing: 0.01em;
  margin: 0 0 8px;
}

h2 {
  font-size: 21px;
  margin: 64px 0 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  line-height: 1.5;
}

h3 {
  font-size: 17px;
  margin: 36px 0 12px;
  color: var(--accent);
}

.lede {
  font-size: 18px;
  color: var(--sub);
  margin: 0 0 40px;
  line-height: 1.7;
}

.meta {
  font-size: 13px;
  color: var(--sub);
  margin-bottom: 48px;
}

p { margin: 0 0 22px; }

a { color: var(--accent); }

strong {
  font-weight: 700;
  background: linear-gradient(transparent 62%, #f5e6c8 62%);
}

blockquote {
  margin: 28px 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--mark);
  color: var(--sub);
  font-size: 16px;
}

blockquote strong { color: var(--ink); }

/* --- tables --- */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
}

th, td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  font-weight: 700;
  border-bottom: 2px solid var(--ink);
  white-space: nowrap;
}

td.c, th.c { text-align: center; }

/* --- misc --- */

.callout {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 20px 24px;
  margin: 32px 0;
  font-size: 16px;
}

.callout p:last-child { margin-bottom: 0; }

ul { padding-left: 1.3em; margin: 0 0 22px; }
li { margin-bottom: 8px; }

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 56px 0;
}

.post-list { list-style: none; padding: 0; }

.post-list li {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.post-list a {
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
  display: block;
  margin-bottom: 4px;
}

.post-list .date {
  font-size: 13px;
  color: var(--sub);
}

footer {
  margin-top: 96px;
  padding: 32px 0 64px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--sub);
}

footer p { margin: 0 0 8px; }

@media (max-width: 600px) {
  body { font-size: 16px; }
  h1 { font-size: 24px; }
  h2 { font-size: 19px; }
  .wrap { padding: 0 18px; }
  table { font-size: 13px; }
  th, td { padding: 8px 6px; }
}