/* ten-narrates — Swiss: grid, Helvetica, one red. */

:root {
  --paper: #fdfdfb;
  --ink: #191919;
  --ink-soft: #55534e;
  --line: #e6e4dd;
  --accent: #e30613;
  --code-bg: #17181c;
  --code-ink: #e8e6e1;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--accent); }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------- top bar ---------- */

.topbar {
  border-bottom: 1px solid var(--line);
}
.topbar .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  height: 64px;
}
.wordmark {
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.02em;
  text-decoration: none;
}
.wordmark .dot { color: var(--accent); }
.topnav { font-size: 14px; color: var(--ink-soft); }
.topnav a { margin-left: 20px; color: var(--ink-soft); text-decoration: none; }
.topnav a:hover { color: var(--ink); }

/* ---------- home ---------- */

.hero { padding: 96px 0 72px; }
.hero .kicker {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 20px;
}
.hero h1 {
  font-size: clamp(40px, 6vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin: 0 0 24px;
  max-width: 18ch;
}
.hero p {
  font-size: 19px;
  color: var(--ink-soft);
  max-width: 52ch;
  margin: 0;
}

.articles { padding: 0 0 96px; }
.articles h2 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 8px;
}
.article-row {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  gap: 24px;
  align-items: baseline;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
}
.article-row:last-child { border-bottom: 1px solid var(--line); }
.article-row .date { font-size: 14px; color: var(--ink-soft); font-variant-numeric: tabular-nums; }
.article-row h3 {
  font-size: 24px;
  letter-spacing: -0.015em;
  margin: 0 0 6px;
  font-weight: 700;
}
.article-row p { margin: 0; color: var(--ink-soft); font-size: 15px; max-width: 60ch; }
.article-row .arrow { font-size: 20px; color: var(--accent); transition: transform 0.15s ease; }
.article-row:hover .arrow { transform: translateX(4px); }
.article-row:hover h3 { text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 6px; }

/* ---------- article ---------- */

.article { max-width: 720px; margin: 0 auto; padding: 72px 24px 96px; }

.article .meta {
  display: flex;
  gap: 16px;
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 40px;
  font-variant-numeric: tabular-nums;
}
.article .meta .series { color: var(--accent); font-weight: 700; }

.article h1 {
  font-size: clamp(34px, 5vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.025em;
  font-weight: 700;
  margin: 0 0 32px;
}

.article h2 {
  font-size: 26px;
  letter-spacing: -0.015em;
  font-weight: 700;
  margin: 64px 0 20px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.article h2::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--accent);
  margin-right: 12px;
}

.article h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 40px 0 12px;
}

.article p { margin: 0 0 20px; }
.article ul, .article ol { margin: 0 0 20px; padding-left: 24px; }
.article li { margin-bottom: 8px; }
.article li::marker { color: var(--accent); }

.article code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: #f0efe9;
  padding: 2px 6px;
  border-radius: 3px;
}

.figure {
  margin: 32px 0;
}
.figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 4px;
}
.figure.illustration img { border: none; }
.figure figcaption {
  font-size: 14px;
  color: var(--ink-soft);
  margin-top: 10px;
}

.codeblock {
  margin: 24px 0;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid #2a2b31;
}
.codeblock .lang {
  background: #1f2026;
  color: #8b8a84;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 16px;
  border-bottom: 1px solid #2a2b31;
}
.codeblock pre {
  margin: 0;
  background: var(--code-bg);
  color: var(--code-ink);
  padding: 16px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.65;
}
.codeblock pre code { background: none; padding: 0; font-size: inherit; }

/* ---------- footer ---------- */

.footer {
  border-top: 1px solid var(--line);
  padding: 32px 0 48px;
  font-size: 14px;
  color: var(--ink-soft);
}
.footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer a { color: var(--ink-soft); text-decoration: none; }
.footer a:hover { color: var(--ink); }

/* ---------- small screens ---------- */

@media (max-width: 640px) {
  body { font-size: 16px; }
  .hero { padding: 64px 0 48px; }
  .article-row { grid-template-columns: 1fr; gap: 8px; }
  .article-row .arrow { display: none; }
  .article { padding-top: 48px; }
}