:root {
  color-scheme: dark;
  --bg: #0a0a0f;
  --bg-alt: #111116;
  --panel: #101017;
  --panel-raised: #15151d;
  --text: #ffffff;
  --body: #c4c4cc;
  --muted: #8a8a95;
  --muted-dim: #80808b;
  --accent: #f4911e;
  --accent-hot: #ffa235;
  --border: #1e1e28;
  --border-strong: #2a2a35;
  --sans: "Space Grotesk", "Montserrat", system-ui, sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --jp: "Noto Sans JP", sans-serif;
  --glow-text: 0 0 10px rgba(244, 145, 30, 0.45), 0 0 26px rgba(244, 145, 30, 0.22);
  --glow-line: 0 0 10px rgba(244, 145, 30, 0.5), 0 0 28px rgba(244, 145, 30, 0.22);
  --content-width: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 78% 2%, rgba(244, 145, 30, 0.07), transparent 24rem),
    var(--bg);
  color: var(--body);
  font: 17px/1.75 var(--sans);
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black, transparent 58%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  opacity: 0.025;
  background: repeating-linear-gradient(to bottom, transparent 0, transparent 3px, #fff 4px);
}

::selection { background: var(--accent); color: var(--text); }

a { color: inherit; text-underline-offset: 0.2em; }

img { display: block; max-width: 100%; }

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--accent);
  color: var(--text);
  font: 600 0.72rem/1 var(--mono);
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
}

.skip-link:focus { top: 12px; }

.site-shell::before {
  content: "";
  position: fixed;
  inset: 0 0 auto;
  z-index: 30;
  height: 2px;
  background: var(--accent);
  box-shadow: var(--glow-line);
}

.site-header,
main,
.site-footer {
  width: min(var(--content-width), calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  min-height: 92px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 48px;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.site-brand { width: 150px; }

.site-nav {
  display: flex;
  justify-content: center;
  gap: clamp(22px, 4vw, 52px);
}

.site-nav a,
.site-footer__links a {
  position: relative;
  color: var(--muted);
  font: 500 0.68rem/1 var(--mono);
  letter-spacing: 0.2em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 180ms ease, text-shadow 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active,
.site-footer__links a:hover {
  color: var(--accent);
  text-shadow: var(--glow-text);
}

.site-nav a.is-active::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -12px;
  left: 0;
  height: 1px;
  background: var(--accent);
  box-shadow: var(--glow-line);
}

.system-status {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  color: var(--muted);
  font: 500 0.62rem/1 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.system-status span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: var(--glow-line);
}

main { padding-bottom: 120px; }

.microlabel {
  margin: 0 0 24px;
  color: var(--accent);
  font: 600 0.68rem/1.5 var(--mono);
  letter-spacing: 0.19em;
  text-shadow: var(--glow-text);
  text-transform: uppercase;
}

.microlabel span {
  color: var(--muted);
  font-family: var(--jp);
  letter-spacing: 0.3em;
  text-shadow: none;
}

.article-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: clamp(60px, 8vw, 120px);
  align-items: end;
  padding: 88px 0 76px;
  border-bottom: 1px solid var(--border);
}

.article-hero::before {
  content: "技";
  position: absolute;
  top: 18px;
  right: 350px;
  z-index: -1;
  color: rgba(255, 255, 255, 0.018);
  font: 700 18rem/1 var(--jp);
}

.back-link {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 64px;
  color: var(--muted);
  font: 500 0.68rem/1 var(--mono);
  letter-spacing: 0.16em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 180ms ease;
}

.back-link span { color: var(--accent); font-size: 1rem; }
.back-link:hover { color: var(--text); }

.article-hero h1,
.blog-hero h1 {
  max-width: 850px;
  margin: 0;
  color: var(--text);
  font: 600 clamp(3rem, 5.6vw, 5.8rem)/0.99 var(--sans);
  letter-spacing: -0.055em;
  text-wrap: balance;
}

.article-deck {
  max-width: 760px;
  margin: 34px 0 0;
  color: var(--body);
  font-size: 1.18rem;
  line-height: 1.65;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 36px;
  color: var(--muted);
  font: 500 0.66rem/1 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.article-meta > * {
  padding: 0 18px;
  border-left: 1px solid var(--border-strong);
}

.article-meta > :first-child { padding-left: 0; border-left: 0; }

.article-signal {
  position: relative;
  min-height: 330px;
  border: 1px solid rgba(244, 145, 30, 0.35);
  background: rgba(10, 10, 15, 0.88);
  box-shadow: 0 0 32px rgba(244, 145, 30, 0.08), inset 0 0 28px rgba(244, 145, 30, 0.025);
  clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
}

.article-signal__bar {
  display: flex;
  justify-content: space-between;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font: 500 0.58rem/1 var(--mono);
  letter-spacing: 0.14em;
}

.article-signal__bar span:last-child { color: var(--accent); }
.article-signal dl { margin: 0; padding: 18px; }
.article-signal dl div { display: grid; grid-template-columns: 65px 1fr; gap: 15px; padding: 8px 0; }
.article-signal dt, .article-signal dd { margin: 0; font: 500 0.62rem/1.3 var(--mono); letter-spacing: 0.08em; }
.article-signal dt { color: var(--muted-dim); }
.article-signal dd { overflow: hidden; color: var(--body); text-overflow: ellipsis; text-transform: uppercase; }
.article-signal dd.status-live { color: var(--accent); }

.article-signal__prompt {
  position: absolute;
  right: 18px;
  bottom: 14px;
  left: 18px;
  margin: 0;
  color: var(--muted-dim);
  font: 0.64rem/1.9 var(--mono);
}

.article-signal__prompt span { color: var(--accent); animation: blink 1s steps(1) infinite; }

@keyframes blink { 50% { opacity: 0; } }

.article-layout {
  display: grid;
  grid-template-columns: 76px minmax(0, 800px) 1fr;
  gap: 48px;
  padding: 96px 0 48px;
}

.article-rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100%;
  color: var(--accent);
  font: 600 0.62rem/1 var(--mono);
}

.article-rail i {
  width: 1px;
  min-height: 160px;
  flex: 1;
  margin: 18px 0;
  background: linear-gradient(var(--accent), var(--border) 18%, var(--border) 82%, transparent);
}

.article-rail b {
  color: var(--muted-dim);
  font: 500 1rem/1 var(--jp);
  writing-mode: vertical-rl;
}

.article-content { min-width: 0; }

.article-content > p:first-child {
  margin-top: 0;
  color: var(--text);
  font-size: 1.18rem;
  line-height: 1.75;
}

.article-content p,
.article-content li {
  color: var(--body);
  font-size: 1.04rem;
  line-height: 1.82;
}

.article-content p { margin: 0 0 1.4em; }
.article-content ul { margin: 0 0 1.75em; padding-left: 1.3em; }
.article-content li { margin: 0.45em 0; padding-left: 0.35em; }
.article-content li::marker { color: var(--accent); }

.article-content h2,
.article-content h3,
.article-content h4 {
  position: relative;
  color: var(--text);
  font-family: var(--sans);
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.article-content h2 {
  margin: 3.4em 0 1em;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: clamp(1.65rem, 3vw, 2.15rem);
  line-height: 1.2;
}

.article-content h2::before {
  content: "//";
  display: block;
  margin-bottom: 12px;
  color: var(--accent);
  font: 600 0.62rem/1 var(--mono);
  letter-spacing: 0.12em;
  text-shadow: var(--glow-text);
}

.article-content h3 { margin: 2.4em 0 0.75em; font-size: 1.3rem; }
.article-content h4 { margin: 2em 0 0.65em; font-size: 1.08rem; }

.article-content strong { color: var(--text); font-weight: 600; }

.article-content a {
  color: var(--accent);
  text-decoration-color: rgba(244, 145, 30, 0.42);
  transition: color 180ms ease, text-shadow 180ms ease;
}

.article-content a:hover { color: var(--accent-hot); text-shadow: var(--glow-text); }

pre {
  position: relative;
  margin: 28px 0 34px;
  overflow-x: auto;
  padding: 54px 24px 24px;
  border: 1px solid var(--border-strong);
  border-top-color: rgba(244, 145, 30, 0.55);
  border-radius: 0;
  background: #07070b;
  box-shadow: 0 16px 55px rgba(0, 0, 0, 0.25), inset 0 1px rgba(244, 145, 30, 0.08);
  scrollbar-color: var(--accent) var(--panel);
}

pre::before {
  content: "CODE // " attr(data-language);
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  padding: 13px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--muted-dim);
  font: 500 0.56rem/1 var(--mono);
  letter-spacing: 0.16em;
}

code {
  color: #e7e7ec;
  font-family: var(--mono);
  font-size: 0.82em;
  line-height: 1.7;
  tab-size: 2;
}

p code, li code {
  padding: 0.14em 0.38em;
  border: 1px solid var(--border);
  background: var(--panel-raised);
  color: #f1c18a;
}

/* Prism tokens use the same neon palette as the rest of the dojo. */
.token.comment,
.token.prolog,
.token.doctype,
.token.cdata { color: #777784; font-style: italic; }
.token.punctuation { color: #a6a6b2; }
.token.namespace { opacity: 0.8; }
.token.property,
.token.tag,
.token.constant,
.token.symbol,
.token.deleted { color: #ff7b72; }
.token.boolean,
.token.number { color: #e7a95e; }
.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted { color: #9bdc8c; }
.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string { color: #70c7d4; }
.token.atrule,
.token.attr-value,
.token.keyword { color: #f4911e; }
.token.function,
.token.class-name { color: #e8d477; }
.token.regex,
.token.important,
.token.variable { color: #d7a8ff; }
.token.important,
.token.bold { font-weight: 700; }
.token.italic { font-style: italic; }
.token.entity { cursor: help; }

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 72px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.tags span {
  padding: 7px 11px;
  border: 1px solid var(--border-strong);
  color: var(--muted);
  font: 500 0.61rem/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tags span::before { content: "#"; margin-right: 3px; color: var(--accent); }

.article-outro {
  position: relative;
  max-width: 980px;
  margin: 100px auto 0;
  padding: 58px 64px;
  overflow: hidden;
  border: 1px solid rgba(244, 145, 30, 0.4);
  background: linear-gradient(120deg, rgba(244, 145, 30, 0.08), transparent 58%), var(--panel);
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

.article-outro::after {
  content: "道";
  position: absolute;
  right: 35px;
  bottom: -25px;
  color: rgba(244, 145, 30, 0.09);
  font: 700 11rem/1 var(--jp);
}

.article-outro h2 { max-width: 700px; margin: 0; color: var(--text); font: 600 clamp(2rem, 4vw, 3.35rem)/1.08 var(--sans); letter-spacing: -0.04em; }
.article-outro > p:not(.microlabel) { max-width: 620px; margin: 20px 0 32px; color: var(--muted); }
.article-outro a { position: relative; z-index: 1; color: var(--accent); font: 600 0.68rem/1 var(--mono); letter-spacing: 0.12em; text-decoration: none; text-transform: uppercase; }
.article-outro a span { display: inline-block; margin-left: 8px; transition: transform 180ms ease; }
.article-outro a:hover span { transform: translateX(5px); }

.blog-hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 80px;
  align-items: end;
  min-height: 530px;
  padding: 110px 0 86px;
  border-bottom: 1px solid var(--border);
}

.blog-hero::after {
  content: "知";
  position: absolute;
  right: 0;
  bottom: -35px;
  z-index: -1;
  color: rgba(255, 255, 255, 0.025);
  font: 700 23rem/1 var(--jp);
}

.blog-hero h1 em { color: var(--accent); font-style: normal; text-shadow: var(--glow-text); }
.blog-hero > div:first-child > p:last-child { max-width: 660px; margin: 34px 0 0; color: var(--muted); font-size: 1.14rem; }

.blog-hero__stats {
  display: flex;
  gap: 22px;
  align-items: flex-end;
  padding: 24px 0 10px 28px;
  border-left: 1px solid var(--accent);
}

.blog-hero__stats > span { color: var(--text); font: 500 4.7rem/0.78 var(--mono); letter-spacing: -0.08em; }
.blog-hero__stats p { margin: 0; color: var(--muted); font: 500 0.63rem/1.8 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; }
.blog-hero__stats b { color: var(--accent); font-weight: 500; }

.blog-feed { padding: 100px 0 40px; }

.blog-feed > header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 42px;
}

.blog-feed > header .microlabel { margin-bottom: 16px; }
.blog-feed > header h2 { margin: 0; color: var(--text); font: 600 clamp(2.1rem, 4vw, 3.4rem)/1 var(--sans); letter-spacing: -0.045em; }
.blog-feed > header > p { margin: 0; color: var(--muted-dim); font: 500 0.63rem/1.7 var(--mono); letter-spacing: 0.08em; text-align: right; text-transform: uppercase; }

.post-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--border-strong); border-left: 1px solid var(--border-strong); }
.post-card { min-width: 0; border-right: 1px solid var(--border-strong); border-bottom: 1px solid var(--border-strong); background: rgba(16, 16, 23, 0.65); }
.post-card:only-child { grid-column: 1 / -1; }
.post-card:only-child .post-card__link { min-height: 350px; }
.post-card:only-child h2,
.post-card:only-child h2 + p { max-width: 680px; }

.post-card__link {
  position: relative;
  min-height: 390px;
  display: flex;
  flex-direction: column;
  padding: 36px;
  overflow: hidden;
  text-decoration: none;
  transition: background-color 200ms ease, box-shadow 200ms ease;
}

.post-card__link::after {
  content: "→";
  position: absolute;
  right: -15px;
  bottom: -45px;
  color: rgba(255, 255, 255, 0.025);
  font: 500 12rem/1 var(--sans);
  transition: color 200ms ease, transform 200ms ease;
}

.post-card__link:hover { background: rgba(244, 145, 30, 0.035); box-shadow: inset 0 0 0 1px rgba(244, 145, 30, 0.45); }
.post-card__link:hover::after { color: rgba(244, 145, 30, 0.09); transform: translate(8px, -8px); }

.post-card__meta { display: flex; justify-content: space-between; color: var(--muted-dim); font: 500 0.6rem/1 var(--mono); letter-spacing: 0.1em; }
.post-card__meta > span { color: var(--accent); }
.post-card__topic { margin: 52px 0 13px; color: var(--accent); font: 600 0.6rem/1 var(--mono); letter-spacing: 0.16em; text-transform: uppercase; }
.post-card h2 { max-width: 540px; margin: 0; color: var(--text); font: 600 clamp(1.7rem, 3vw, 2.45rem)/1.12 var(--sans); letter-spacing: -0.035em; }
.post-card h2 + p { max-width: 560px; margin: 20px 0 34px; color: var(--muted); font-size: 0.98rem; line-height: 1.7; }
.post-card__footer { position: relative; z-index: 1; display: flex; justify-content: space-between; margin-top: auto; color: var(--muted-dim); font: 500 0.6rem/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; }
.post-card__footer b { color: var(--accent); font-weight: 600; }

.site-footer {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 34px 80px;
  padding: 70px 0 48px;
  border-top: 1px solid var(--border);
  color: var(--muted);
}

.site-footer__brand img { width: 145px; }
.site-footer__brand p { max-width: 390px; margin: 18px 0 0; color: var(--muted-dim); font-size: 0.8rem; }
.site-footer__motto { align-self: start; justify-self: end; margin: 5px 0 0; color: var(--muted-dim); font: 500 0.63rem/1.8 var(--mono); letter-spacing: 0.18em; text-transform: uppercase; }
.site-footer__motto span { color: var(--accent); font-family: var(--jp); }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 26px; padding-top: 24px; border-top: 1px solid var(--border); }
.site-footer__legal { margin: 0; padding-top: 24px; border-top: 1px solid var(--border); color: var(--muted-dim); font: 0.58rem/1.4 var(--mono); letter-spacing: 0.1em; text-align: right; text-transform: uppercase; }

@media (max-width: 940px) {
  .site-header { grid-template-columns: auto 1fr; }
  .site-nav { justify-content: end; }
  .system-status { display: none; }
  .article-hero { grid-template-columns: 1fr; }
  .article-hero::before { right: 0; }
  .article-signal { display: none; }
  .article-layout { grid-template-columns: 42px minmax(0, 800px); gap: 28px; }
  .article-rail { grid-column: 1; }
  .article-content { grid-column: 2; }
  .blog-hero { grid-template-columns: 1fr; gap: 50px; }
  .blog-hero__stats { justify-self: start; }
  .post-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .site-header, main, .site-footer { width: min(100% - 32px, var(--content-width)); }
  .site-header { min-height: 76px; gap: 20px; }
  .site-brand { width: 118px; }
  .site-nav { gap: 18px; }
  .site-nav a { font-size: 0.59rem; letter-spacing: 0.12em; }
  .site-nav a:nth-child(2), .site-nav a:nth-child(4) { display: none; }
  .article-hero { padding: 52px 0 54px; }
  .back-link { margin-bottom: 50px; }
  .article-hero h1, .blog-hero h1 { font-size: clamp(2.6rem, 13vw, 4rem); line-height: 1.01; }
  .article-deck { margin-top: 26px; font-size: 1.05rem; }
  .article-meta { row-gap: 12px; line-height: 1.4; }
  .article-meta > * { padding-inline: 10px; }
  .article-meta > :last-child { display: none; }
  .article-layout { display: block; padding-top: 62px; }
  .article-rail { display: none; }
  .article-content p, .article-content li { font-size: 1rem; }
  .article-content > p:first-child { font-size: 1.08rem; }
  pre { margin-inline: -16px; padding: 52px 16px 20px; }
  code { font-size: 0.77em; }
  .article-outro { margin-top: 72px; padding: 42px 28px; }
  .article-outro::after { right: -25px; }
  .blog-hero { min-height: auto; padding: 78px 0 64px; }
  .blog-hero__stats > span { font-size: 3.8rem; }
  .blog-feed { padding-top: 70px; }
  .blog-feed > header { align-items: start; }
  .blog-feed > header > p { display: none; }
  .post-card__link { min-height: 360px; padding: 28px; }
  .post-card__topic { margin-top: 42px; }
  .site-footer { grid-template-columns: 1fr; padding-top: 54px; }
  .site-footer__motto { justify-self: start; }
  .site-footer__legal { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}