/* LoreaTec blog — design B «Editorial» (PLAN-21, D16). One reading column, serif headings,
   a post list that works with or without photos. No third-party requests: system fonts for
   body text and Japanese headings, one self-hosted Latin serif for English. */
@font-face {
  font-family: "Source Serif 4";
  src: url("source-serif-4-latin.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --ink: #11161f;
  --text: #23293a;
  --muted: #5f6672;
  --line: #e7e3da;
  --link: #0552a8;
  --accent: #086ad8;
  --code: #f1eee7;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", Meiryo, Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif-en: "Source Serif 4", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --serif-ja: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, "Noto Serif JP", "Noto Serif CJK JP", serif;
  --col: 46rem;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c; --surface: #1b1f26; --ink: #f1efe9; --text: #dcdad4; --muted: #a2a8b2;
    --line: #2b313a; --link: #8cbcf7; --accent: #5ba4f5; --code: #22272f; color-scheme: dark;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.7 var(--sans); }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
img, video, iframe { max-width: 100%; }
img { height: auto; }
.skip { position: absolute; left: -9999px; top: 0; }
.skip:focus { left: 12px; top: 12px; z-index: 10; background: var(--surface); padding: 8px 12px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.wrap, .col {
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.wrap { max-width: 62rem; }
.col { max-width: calc(var(--col) + 32px); }
.lang-ja { --col: 47.5rem; }

/* header */
.site-head { border-bottom: 1px solid var(--line); }
.head-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 24px; padding-block: 16px; }
.brand { color: var(--ink); text-decoration: none; font-weight: 600; font-size: 18px; letter-spacing: -.01em; }
.brand-sub { font-weight: 400; color: var(--muted); }
.top-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 18px; font-size: 14px; }
.top-nav a { color: var(--ink); text-decoration: none; padding: 6px 0; }
.top-nav a:hover { color: var(--accent); }
.top-nav .icon-link { display: inline-flex; padding: 6px; margin: -6px 0; }
.top-nav .lang { font-weight: 600; }

/* type */
.eyebrow { margin: 0 0 10px; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.eyebrow a { color: inherit; text-decoration: none; }
.display, .list-h1, .post-title, .entry-title { color: var(--ink); text-wrap: balance; }
.display { margin: 0 0 26px; font: 600 clamp(2rem, 6vw, 3.2rem)/1.1 var(--serif-en); letter-spacing: -.015em; }
.list-h1 { margin: 0 0 18px; font: 600 clamp(1.8rem, 5vw, 2.6rem)/1.15 var(--serif-en); letter-spacing: -.01em; }
.post-title { margin: 0 0 8px; font: 600 clamp(2rem, 5.6vw, 3.1rem)/1.12 var(--serif-en); letter-spacing: -.02em; }
.lang-ja .display, .lang-ja .list-h1, .lang-ja .post-title { font-family: var(--serif-ja); letter-spacing: .02em; line-height: 1.45; font-feature-settings: "palt"; }
.lang-ja .display { font-size: clamp(1.7rem, 5vw, 2.5rem); }
.lang-ja .post-title { font-size: clamp(1.6rem, 4.6vw, 2.4rem); }
.lede, .sub { color: var(--muted); max-width: 38rem; }
.meta { margin: 0 0 8px; font-size: 14px; color: var(--muted); }
.meta a { color: var(--muted); }

main { padding-block: 48px 40px; }
.list main, .search-page main, .error404 main { padding-top: 56px; }

/* search + categories */
.search { display: flex; gap: 8px; margin: 0 0 22px; max-width: 34rem; }
.search input {
  flex: 1; min-width: 0; height: 46px; border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  border-radius: 6px; padding: 0 14px; font: inherit; font-size: 16px;
}
.search button { height: 46px; padding: 0 18px; border: 0; border-radius: 6px; background: var(--ink); color: var(--bg); font: inherit; font-weight: 600; cursor: pointer; }
.cats { display: flex; flex-wrap: wrap; gap: 4px 22px; padding: 12px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: 15px; }
.cats a { color: var(--ink); text-decoration: none; padding: 4px 0; border-bottom: 2px solid transparent; }
.cats a:hover { border-bottom-color: var(--accent); }
.cats a[aria-current] { font-weight: 600; border-bottom-color: var(--ink); }

/* post lists */
.entries { display: flex; flex-direction: column; }
.entry { display: flex; gap: 24px; align-items: flex-start; padding: 28px 0; border-bottom: 1px solid var(--line); }
.entry-text { flex: 1 1 auto; min-width: 0; }
.entry-title { margin: 0 0 8px; font: 600 1.6rem/1.24 var(--serif-en); letter-spacing: -.01em; }
.lang-ja .entry-title { font: 700 1.35rem/1.55 var(--serif-ja); letter-spacing: .02em; font-feature-settings: "palt"; }
.entry-title a { color: var(--ink); text-decoration: none; }
.entry-title a:hover { color: var(--link); text-decoration: underline; }
.entry-excerpt { margin: 0; color: var(--text); font-size: 16px; line-height: 1.65; overflow-wrap: anywhere; }
.entry-thumb { flex: 0 0 168px; }
.entry-thumb img { display: block; width: 168px; height: 126px; object-fit: cover; border-radius: 4px; background: var(--code); }
@media (max-width: 560px) {
  .entry { gap: 14px; }
  .entry-thumb { flex-basis: 96px; }
  .entry-thumb img { width: 96px; height: 72px; }
  .entry-title { font-size: 1.3rem; }
  .lang-ja .entry-title { font-size: 1.15rem; }
}
.pager { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px; padding-top: 28px; font-size: 15px; }
.pager-older { justify-self: end; font-weight: 600; }
.pager-newer { font-weight: 600; }
.pager-nums { display: flex; flex-wrap: wrap; gap: 4px; justify-content: center; color: var(--muted); }
.pager-nums a, .pager-nums span { display: inline-flex; align-items: center; justify-content: center; min-width: 32px; min-height: 32px; padding: 0 4px; }
.pager-newer, .pager-older { display: inline-flex; align-items: center; min-height: 32px; }
.pager-nums [aria-current] { color: var(--ink); font-weight: 700; }
@media (max-width: 560px) { .pager { grid-template-columns: 1fr 1fr; } .pager-nums { grid-column: 1 / -1; grid-row: 2; } }

/* single post */
.post-head { margin-bottom: 28px; }
.prose { font-size: 18px; line-height: 1.85; color: var(--text); overflow-wrap: anywhere; }
.lang-en .prose { font-family: var(--serif-en); font-size: 20px; line-height: 1.65; }
.lang-ja .prose { line-height: 2; letter-spacing: .03em; }
.prose > * { margin-top: 0; margin-bottom: 1.25em; }
.prose h2, .prose h3, .prose h4 { color: var(--ink); line-height: 1.3; margin: 1.8em 0 .6em; font-family: var(--sans); letter-spacing: -.005em; }
.lang-ja .prose h2, .lang-ja .prose h3 { font-family: var(--serif-ja); letter-spacing: .02em; }
.prose h2 { font-size: 1.4em; }
.prose h3 { font-size: 1.2em; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin: 0 0 .5em; }
.prose blockquote { margin: 1.6em 0; padding: .2em 0 .2em 1.1em; border-left: 3px solid var(--line); color: var(--muted); font-style: italic; }
.prose pre, .prose code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .86em; background: var(--code); border-radius: 4px; }
.prose code { padding: .1em .35em; }
.prose pre { padding: 14px 16px; overflow-x: auto; line-height: 1.5; }
.prose pre code { padding: 0; background: none; }
.prose table { border-collapse: collapse; width: 100%; font-size: .9em; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--line); padding: .45em .6em; text-align: left; vertical-align: top; }
.prose hr, .prose .wp-block-separator { border: 0; border-top: 1px solid var(--line); margin: 2em 0; }
.prose figure { margin: 2em 0; }
.prose figure img, .prose p > img, .prose a > img { border-radius: 4px; }
.prose figcaption, .prose .wp-caption-text, .prose .wp-element-caption { margin-top: .5em; font: 14px/1.5 var(--sans); color: var(--muted); text-align: center; }
.prose .aligncenter { display: block; margin-left: auto; margin-right: auto; text-align: center; }
.prose .alignleft { float: left; margin: .3em 1.4em 1em 0; max-width: 50%; }
.prose .alignright { float: right; margin: .3em 0 1em 1.4em; max-width: 50%; }
.prose .wp-caption { max-width: 100%; }
.prose .has-text-align-center { text-align: center; }
.prose .has-text-align-right { text-align: right; }
.prose::after { content: ""; display: table; clear: both; }
.prose .wp-block-gallery, .prose .gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 200px), 1fr)); gap: 8px; margin: 2em 0; }
.prose .wp-block-gallery figure, .prose .gallery figure, .prose .gallery .gallery-item { margin: 0; }
.prose .wp-block-gallery img, .prose .gallery img { width: 100%; height: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.prose .gallery dl, .prose .gallery dt, .prose .gallery dd { margin: 0; }
.prose .gallery br { display: none; }
.prose .wp-block-video video { width: 100%; border-radius: 4px; background: #000; }
.prose .wp-block-embed iframe, .prose iframe[src*="youtube"], .prose iframe[src*="vimeo"] { width: 100%; aspect-ratio: 16 / 9; height: auto; border: 0; }
.prose .wp-block-columns { display: flex; flex-wrap: wrap; gap: 1.5em; }
.prose .wp-block-column { flex: 1 1 14em; min-width: 0; }
.prose .wp-block-button__link { display: inline-block; padding: .55em 1.1em; border-radius: 6px; background: var(--ink); color: var(--bg); text-decoration: none; font: 600 16px/1.4 var(--sans); }
.prose img.wp-smiley, .prose img.emoji { display: inline; width: 1em; height: 1em; margin: 0 .07em; vertical-align: -.1em; border-radius: 0; }

.post-foot { margin-top: 40px; font-size: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; margin: 0 0 28px; }
.tags span { color: var(--muted); font-size: 13px; letter-spacing: .1em; text-transform: uppercase; margin-right: 4px; }
.tags a { font-size: 14px; }
.related { border-top: 1px solid var(--line); padding-top: 26px; }
.related h2 { margin: 0 0 12px; font: 500 13px/1.4 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.related ul { list-style: none; margin: 0; padding: 0; }
.related li { border-bottom: 1px solid var(--line); }
.related a { display: block; padding: 12px 0; color: var(--ink); text-decoration: none; font: 1.25rem/1.4 var(--serif-en); }
.lang-ja .related a { font: 1.1rem/1.6 var(--serif-ja); }
.related a:hover { color: var(--link); }
.adjacent { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding-top: 26px; font-size: 15px; }
.adjacent a { color: var(--ink); text-decoration: none; line-height: 1.45; }
.adjacent a span { display: block; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.adjacent a[rel="next"] { text-align: right; }
.adjacent a:hover { color: var(--link); }
@media (max-width: 560px) { .adjacent { grid-template-columns: 1fr; } .adjacent a[rel="next"] { text-align: left; } }

/* footer */
.site-foot { border-top: 1px solid var(--line); margin-top: 32px; }
.site-foot .wrap { padding-block: 30px 40px; font-size: 14px; line-height: 1.9; color: var(--muted); }
.site-foot p { margin: 0; }
.site-foot .foot-strong { color: var(--ink); font-weight: 600; margin-bottom: 4px; }
.site-foot a { color: var(--ink); }

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }
@media print { .site-head, .site-foot, .pager, .related, .adjacent, .search, .cats { display: none; } body { background: #fff; color: #000; } }