:root {
  --ink: #17211f;
  --paper: #f2f3ed;
  --paper-deep: #e3e7df;
  --teal: #0c6058;
  --teal-dark: #08443f;
  --signal: #e05238;
  --line: rgba(23, 33, 31, 0.18);
  --muted: #5e6a66;
  --page-pad: clamp(1.25rem, 6vw, 5rem);
  --content: 76rem;
}

* { box-sizing: border-box; }

html {
  background: var(--paper);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent calc(100% - 1px), rgba(23, 33, 31, 0.045) 1px) 0 0 / 8.333vw 100%,
    var(--paper);
  font-family: "Manrope", sans-serif;
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }

.blog-header {
  display: flex;
  max-width: var(--content);
  min-height: 5rem;
  margin: 0 auto;
  padding: 0 var(--page-pad);
  border-bottom: 1px solid var(--line);
  align-items: center;
  justify-content: space-between;
}

.blog-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
}

.blog-mark {
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  color: #fff;
  background: var(--teal);
  font-family: "DM Mono", monospace;
  font-size: 0.7rem;
}

.blog-nav { display: flex; gap: 1.5rem; font-size: 0.85rem; font-weight: 700; }
.blog-nav a { border-bottom: 1px solid transparent; }
.blog-nav a:hover { border-color: currentColor; color: var(--teal); }

.blog-main {
  max-width: var(--content);
  margin: 0 auto;
  padding: clamp(4rem, 8vw, 7rem) var(--page-pad);
}

.blog-kicker,
.article-meta,
.article-number,
.system-label {
  color: var(--signal);
  font-family: "DM Mono", monospace;
  font-size: 0.68rem;
  font-weight: 500;
  text-transform: uppercase;
}

.blog-intro {
  display: grid;
  padding-bottom: clamp(3rem, 6vw, 5rem);
  grid-template-columns: minmax(9rem, 0.45fr) minmax(0, 1.55fr);
  gap: 2rem;
}

.blog-intro h1,
.article-hero h1 {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(2.8rem, 7vw, 6rem);
  font-weight: 500;
  line-height: 0.98;
}

.blog-intro p:last-child {
  max-width: 44rem;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.article-card {
  display: grid;
  padding: clamp(2rem, 4vw, 3.5rem) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  grid-template-columns: minmax(7rem, 0.35fr) minmax(0, 1.15fr) minmax(14rem, 0.5fr);
  gap: 2rem;
  align-items: start;
}

.article-card h2 {
  max-width: 18ch;
  margin: 0 0 1rem;
  font-size: clamp(1.8rem, 4vw, 3.3rem);
  font-weight: 500;
  line-height: 1.08;
}

.article-card p { margin: 0; color: var(--muted); }
.article-card-link { color: var(--teal); font-size: 0.85rem; font-weight: 700; }

.article-hero {
  display: grid;
  padding-bottom: clamp(3rem, 6vw, 5rem);
  grid-template-columns: minmax(0, 1.4fr) minmax(15rem, 0.6fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: end;
}

.article-meta { margin: 0 0 1rem; }
.article-deck { margin: 0; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.3rem); }

.system-figure {
  display: grid;
  min-height: 19rem;
  margin: 0;
  padding: 1.5rem;
  color: #fff;
  background:
    linear-gradient(rgba(119, 198, 185, 0.1) 1px, transparent 1px) 0 0 / 2.5rem 2.5rem,
    linear-gradient(90deg, rgba(119, 198, 185, 0.1) 1px, transparent 1px) 0 0 / 2.5rem 2.5rem,
    var(--teal-dark);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  align-items: center;
}

.system-node,
.system-core {
  display: grid;
  min-height: 4.5rem;
  padding: 0.75rem;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.35);
  text-align: center;
  font-size: 0.75rem;
}

.system-core {
  min-height: 7rem;
  color: var(--ink);
  background: #dbece6;
  font-weight: 700;
}

.system-figure figcaption {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.68rem;
  grid-column: 1 / -1;
}

.article-body {
  display: grid;
  padding-top: clamp(3rem, 6vw, 5rem);
  border-top: 1px solid var(--line);
  grid-template-columns: minmax(9rem, 0.45fr) minmax(0, 1.1fr) minmax(12rem, 0.45fr);
  gap: 2rem;
}

.article-content { max-width: 46rem; }
.article-content h2 { margin: 3rem 0 0.75rem; font-size: 1.65rem; line-height: 1.2; }
.article-content h2:first-child { margin-top: 0; }
.article-content p { margin: 0 0 1.25rem; }
.article-aside { padding-left: 1.25rem; border-left: 3px solid var(--signal); color: var(--muted); font-size: 0.82rem; }
.article-aside strong { display: block; margin-bottom: 0.5rem; color: var(--ink); }
.article-source { color: var(--teal); font-weight: 700; text-decoration: underline; text-underline-offset: 0.2rem; }

.blog-footer {
  display: flex;
  max-width: var(--content);
  min-height: 7rem;
  margin: 0 auto;
  padding: 1rem var(--page-pad);
  border-top: 1px solid var(--line);
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.8rem;
}

@media (max-width: 760px) {
  .blog-header { min-height: 4.5rem; }
  .blog-brand > span:last-child { display: none; }
  .blog-nav { gap: 1rem; }
  .blog-main { padding-top: 3rem; }
  .blog-intro,
  .article-card,
  .article-hero,
  .article-body { grid-template-columns: minmax(0, 1fr); }
  .article-card { gap: 1rem; }
  .article-hero { align-items: start; }
  .system-figure { min-height: 16rem; padding: 1rem; gap: 0.5rem; }
  .system-node { min-height: 3.75rem; padding: 0.4rem; font-size: 0.62rem; }
  .system-core { min-height: 5.5rem; font-size: 0.72rem; }
  .article-aside { margin-top: 1rem; }
  .blog-footer { align-items: flex-start; flex-direction: column; justify-content: center; gap: 0.25rem; }
}