:root {
  --bg: #101513;
  --panel: #161d1a;
  --ink: #f1f3ed;
  --muted: #98a39c;
  --line: #2a332f;
  --accent: #b8f05c;
  --shell: 62rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 18px;
  line-height: 1.85;
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.skip-link { position: absolute; z-index: 10; top: 12px; left: 12px; padding: 8px 12px; background: var(--accent); color: var(--bg); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.shell { width: 100%; max-width: var(--shell); margin-inline: auto; padding-inline: 2.5rem; }

.site-header { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.wordmark { display: inline-flex; align-items: center; font: 700 1.05rem ui-monospace, monospace; letter-spacing: -.02em; }
.avatar { width: 30px; height: 30px; margin-right: 10px; object-fit: contain; }
.prompt { color: var(--accent); }
.cursor { display: inline-block; width: 7px; height: 1.1em; margin-left: 5px; vertical-align: -.2em; background: var(--accent); }
nav { display: flex; gap: clamp(18px, 3vw, 38px); font: 500 .82rem ui-monospace, monospace; color: var(--muted); }
nav a:hover, nav a:focus-visible { color: var(--accent); }

.eyebrow { margin: 0 0 18px; color: var(--accent); font: 600 .76rem ui-monospace, monospace; letter-spacing: .14em; text-transform: uppercase; }
.page-head h1 { margin: 0; font-size: clamp(1.65rem, 4vw, 2.15rem); line-height: 1.45; letter-spacing: -.03em; }

.rule { height: 1px; background: var(--line); position: relative; }
.rule span { position: absolute; right: 0; top: -15px; padding-left: 12px; background: var(--bg); color: #667169; font: .72rem ui-monospace, monospace; }
.home-section { padding-block: 76px 104px; }
.home-intro { margin-bottom: 64px; }
.home-intro .eyebrow { margin-bottom: 12px; }
.home-intro h1 { margin: 0; font-size: clamp(1.65rem, 4vw, 2.15rem); line-height: 1.45; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 42px; }
.section-heading h2 { margin: 0; font-size: 1.2rem; line-height: 1.3; letter-spacing: -.02em; }
.text-link, .back-link { color: var(--muted); font: 500 .78rem ui-monospace, monospace; }
.back-link { font-size: 1rem; }
.text-link:hover, .back-link:hover { color: var(--accent); }

.post-list { border-top: 1px solid var(--line); }
.post-row { display: grid; grid-template-columns: 120px 1fr auto; gap: 30px; align-items: start; padding: 28px 4px; border-bottom: 1px solid var(--line); }
.post-row time { color: var(--muted); font: .75rem ui-monospace, monospace; padding-top: 5px; }
.post-row h2, .post-row h3 { margin: 0; font-size: 1.125rem; line-height: 1.45; letter-spacing: -.01em; }
.post-row h2 a:hover, .post-row h3 a:hover { color: var(--accent); }
.post-row p { margin: .65rem 0 0; color: var(--muted); font-size: 1rem; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px 14px; margin-top: 12px; }
.tag { color: var(--accent); font: 500 .78rem ui-monospace, monospace; }
.tag:hover, .tag:focus-visible { text-decoration: underline; text-underline-offset: 3px; }
.row-arrow { color: var(--muted); font-size: 1.2rem; }
.post-row:hover .row-arrow { color: var(--accent); transform: translate(2px, -2px); }
.post-row:focus-within .row-arrow { color: var(--accent); }

.page-head { padding-block: 90px 64px; border-bottom: 1px solid var(--line); }
.page-head > p:last-child { max-width: 580px; margin: 28px 0 0; color: var(--muted); font-size: 1.05rem; }
.listing { padding-block: 56px 120px; }
.taxonomy-list { border-top: 1px solid var(--line); }
.taxonomy-item { display: flex; justify-content: space-between; gap: 20px; padding: 22px 4px; border-bottom: 1px solid var(--line); }
.taxonomy-item span:first-child { color: var(--accent); }
.taxonomy-item span:last-child { color: var(--muted); font: .78rem ui-monospace, monospace; }
.taxonomy-item:hover span { color: var(--ink); }
.article { padding-block: 3rem 5rem; }
.article-head { padding-bottom: 2rem; border-bottom: 1px solid var(--line); }
.article-head h1 { margin: 40px 0 18px; font-size: clamp(1.65rem, 4vw, 2.15rem); line-height: 1.45; letter-spacing: -.03em; }
.article-description { margin: 0 0 1.25rem; color: var(--muted); font-size: 1.125rem; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 26px; margin-top: 25px; color: var(--muted); font: 1rem ui-monospace, monospace; }
.article-meta .tag-list { margin-top: 0; }
.prose { padding-top: 2rem; font-size: inherit; line-height: 1.85; }
.prose h1, .prose h2, .prose h3, .prose h4, .prose h5, .prose h6 { line-height: 1.45; }
.prose h2 { margin: 2.75rem 0 1rem; font-size: 1.4rem; letter-spacing: -.035em; }
.prose h2::before { content: "# "; color: var(--accent); font-family: ui-monospace, monospace; }
.prose h3 { margin: 1.8rem 0 .65rem; font-size: 1.12rem; letter-spacing: -.02em; }
.prose h3::before { content: "## "; color: var(--accent); font-family: ui-monospace, monospace; opacity: 0.8; }
.prose p, .prose ul, .prose ol { color: #c8cfc9; }
.prose p, .prose ul, .prose ol, .prose figure { margin: 0 0 1.25rem; }
.prose ul, .prose ol { padding-left: 1.5em; }
.prose li + li { margin-top: .4rem; }
.prose li > ul, .prose li > ol { margin-top: .4rem; margin-bottom: 0; }
.prose blockquote { margin: 1.5rem 0; padding: .8rem 1.1rem; border-left: 3px solid var(--line); background: var(--panel); }
.prose blockquote > :last-child { margin-bottom: 0; }
.prose table { display: block; max-width: 100%; overflow-x: auto; margin: 1.5rem 0; border-collapse: collapse; }
.prose th, .prose td { padding: .65rem .8rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { background: var(--panel); }
.prose img { display: block; max-width: 100%; height: auto; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose code { padding: .15em .35em; background: var(--panel); color: #ccec9a; font: .9em ui-monospace, monospace; }
.prose pre { overflow-x: auto; margin: 1.5rem 0; padding: 1rem; line-height: 1.65; overflow-wrap: normal; border: 1px solid var(--line); background: #0b0f0d !important; }
.prose pre code { padding: 0; background: transparent; }
.related-posts { display: block; font: inherit; margin-top: 3rem; padding-top: 28px; border-top: 1px solid var(--line); }
.related-posts h2 { margin: 0 0 16px; font-size: 1rem; }
.related-posts ul { margin: 0; padding-left: 1.3em; color: var(--muted); }
.related-posts li + li { margin-top: 8px; }
.related-posts a:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.related-posts a span { color: var(--accent); }

.header-resolve { margin: 2em 0; }
.header-resolve-step { position: relative; padding: 20px 22px; border: 1px solid var(--line); background: var(--panel); }
.header-resolve-step + .header-resolve-step { margin-top: 24px; }
.header-resolve-step + .header-resolve-step::before { content: "↓"; position: absolute; top: -27px; left: 50%; color: var(--accent); font: 700 20px ui-monospace, monospace; transform: translateX(-50%); }
.header-resolve-heading { display: flex; align-items: center; gap: 10px; line-height: 1.4; }
.header-resolve-heading strong { font-size: .95rem; }
.header-resolve-number { display: grid; width: 26px; height: 26px; flex: none; place-items: center; border-radius: 50%; background: var(--accent); color: var(--bg); font: 700 .8rem ui-monospace, monospace; }
.header-resolve-timing { margin-left: auto; color: var(--muted); font-size: .76rem; white-space: nowrap; }
.header-resolve-source { color: var(--accent); font: .76rem ui-monospace, monospace; white-space: nowrap; }
.header-resolve-flow { display: flex; align-items: center; gap: 12px; margin-top: 16px; }
.header-resolve-node { min-width: 0; padding: 10px 14px; border: 1px solid #39473c; background: #101513; font-size: .85rem; overflow-wrap: anywhere; }
.header-resolve-detail { display: block; margin-top: 3px; color: var(--muted); font-size: .78rem; }
.header-resolve-node code, .header-resolve figcaption code { padding: 0; background: none; }
.header-resolve-arrow { flex: none; color: var(--accent); font: 700 1.2rem ui-monospace, monospace; }
.header-resolve figcaption { margin-top: 10px; color: var(--muted); font-size: .83rem; line-height: 1.6; }

.site-footer { border-top: 1px solid var(--line); color: var(--muted); font: .7rem ui-monospace, monospace; }
.footer-inner { min-height: 110px; display: flex; align-items: center; justify-content: space-between; }
.footer-inner a:hover { color: var(--accent); }
.error-page { min-height: 55vh; padding-block: 100px; }
.error-page h1 { margin: 0; font-size: clamp(1.8rem, 3.5vw, 2.5rem); line-height: 1.3; }
.error-page > p:not(.eyebrow) { margin: 20px 0 28px; color: var(--muted); }

@media (max-width: 720px) {
  .shell { padding-inline: 1.1rem; }
  .header-inner { min-height: 66px; }
  nav { gap: 14px; }
  .home-section { padding-block: 60px 80px; }
  .home-intro { margin-bottom: 48px; }
  .section-heading { align-items: start; }
  .post-row { grid-template-columns: 1fr auto; gap: 8px 20px; }
  .post-row time { grid-column: 1 / -1; }
  .page-head { padding-block: 72px 50px; }
  .article { padding-block: 2rem 3rem; }
  .header-resolve-heading { flex-wrap: wrap; }
  .header-resolve-timing { width: 100%; margin-left: 36px; }
  .header-resolve-source { margin-left: 36px; }
  .header-resolve-flow { flex-direction: column; align-items: stretch; gap: 4px; }
  .header-resolve-arrow { align-self: center; transform: rotate(90deg); }
  .footer-inner { flex-direction: column; justify-content: center; align-items: start; gap: 4px; }
}

@media (max-width: 600px) {
  body { font-size: 17px; }
}

@media (prefers-reduced-motion: no-preference) {
  a, .row-arrow { transition: color .18s ease, border-color .18s ease, transform .18s ease; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}