:root {
    --paper:        oklch(98.2% 0.008 80);
    --paper-2:      oklch(96.5% 0.012 80);
    --ink:          oklch(20% 0.015 60);
    --ink-2:        oklch(40% 0.012 60);
    --ink-3:        oklch(60% 0.012 60);
    --rule:         oklch(85% 0.012 80);
    --accent:       oklch(53% 0.16 35);
    --accent-soft:  oklch(53% 0.16 35 / 0.12);
    --mark:         oklch(42% 0.08 150);
    --measure:      66ch;
    --pad-x:        clamp(20px, 5vw, 64px);
    --serif:        "Newsreader", "Iowan Old Style", Georgia, serif;
    --sans:         "Inter Tight", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    --mono:         "JetBrains Mono", ui-monospace, Menlo, monospace;
  }
  html[data-mode="dark"] {
    --paper:        oklch(15% 0.01 60);
    --paper-2:      oklch(19% 0.012 60);
    --ink:          oklch(94% 0.008 80);
    --ink-2:        oklch(72% 0.012 80);
    --ink-3:        oklch(54% 0.012 80);
    --rule:         oklch(28% 0.012 60);
    --accent:       oklch(72% 0.14 40);
    --accent-soft:  oklch(72% 0.14 40 / 0.16);
    --mark:         oklch(72% 0.11 150);
  }
  * { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; background: var(--paper); color: var(--ink); }
  body {
    font-family: var(--sans);
    font-size: 17px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    font-feature-settings: "ss01", "cv05", "cv11";
    transition: background-color .25s, color .25s;
  }
  a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
  a:hover { color: var(--accent); }
  ::selection { background: var(--accent-soft); }

  .site-head {
    max-width: 1040px;
    margin: 0 auto;
    padding: clamp(28px, 5vw, 56px) var(--pad-x) 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }
  .wordmark {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--mono);
    font-size: 12.5px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--ink-2);
    text-decoration: none;
  }
  .avatar {
    width: 30px; height: 30px;
    border-radius: 50%;
    background: var(--mark);
    color: var(--paper);
    display: inline-flex;
    align-items: center; justify-content: center;
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: 19px;
    line-height: 1;
    text-transform: none;
    letter-spacing: 0;
    padding: 1px 1px 0 0;
    flex-shrink: 0;
    transition: background .2s;
  }
  .wordmark:hover .avatar { background: var(--accent); }
  .site-nav {
    display: flex; align-items: center; gap: 22px;
    font-family: var(--mono); font-size: 12.5px;
    letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-2);
  }
  .site-nav a { text-decoration: none; }
  .site-nav a:hover { color: var(--accent); }
  .mode-toggle {
    appearance: none; border: 1px solid var(--rule); background: transparent;
    width: 30px; height: 30px; border-radius: 50%;
    cursor: pointer; color: var(--ink-2);
    display: inline-flex; align-items: center; justify-content: center;
    transition: border-color .2s, color .2s;
  }
  .mode-toggle:hover { color: var(--accent); border-color: var(--accent); }
  .mode-toggle svg { width: 14px; height: 14px; }
  html[data-mode="dark"] .mode-toggle .sun { display: none; }
  html[data-mode="light"] .mode-toggle .moon { display: none; }

  article {
    max-width: 1180px;
    margin: 0 auto;
    padding: clamp(40px, 7vw, 88px) var(--pad-x) 120px;
  }

  .article-meta {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--ink-3);
    margin-bottom: 28px;
    display: flex; gap: 18px; flex-wrap: wrap;
    align-items: center;
  }
  .article-meta time { font-variant-numeric: tabular-nums; }
  .article-meta .tag { color: var(--ink-2); }
  .article-meta .tag::before { content: "#"; opacity: 0.5; margin-right: 1px; }
  .article-meta .dot { color: var(--ink-3); opacity: 0.4; }

  .article-title {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(40px, 6vw, 76px);
    line-height: 1.05;
    letter-spacing: -0.022em;
    margin: 0 0 28px;
    max-width: 20ch;
    color: var(--ink);
    text-wrap: balance;
  }
  .article-dek {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(20px, 2vw, 24px);
    line-height: 1.45;
    color: var(--ink-2);
    max-width: 38ch;
    margin: 0 0 64px;
  }

  .article-body {
    display: grid;
    grid-template-columns: minmax(0, var(--measure)) minmax(0, 1fr);
    column-gap: clamp(28px, 5vw, 72px);
    align-items: start;
  }
  .article-body > * { grid-column: 1; }
  .article-body > aside.margin-note {
    grid-column: 2;
    align-self: start;
    font-family: var(--sans);
    font-size: 13.5px;
    line-height: 1.55;
    color: var(--ink-3);
    padding: 4px 0 0;
    border-top: 1px solid var(--rule);
    max-width: 30ch;
  }
  .article-body > aside.margin-note .label {
    display: block;
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 8px;
  }
  @media (max-width: 960px) {
    .article-body { grid-template-columns: 1fr; }
    .article-body > aside.margin-note {
      grid-column: 1;
      margin: 8px 0 24px;
      padding: 16px;
      background: var(--paper-2);
      border-top: 0;
      border-left: 2px solid var(--accent);
      max-width: 100%;
    }
  }

  .article-body p, .article-body ul, .article-body ol {
    font-family: var(--serif);
    font-size: 19px;
    line-height: 1.6;
    color: var(--ink);
    margin: 0 0 1.2em;
    text-wrap: pretty;
    hanging-punctuation: first;
  }
  .article-body p:first-of-type::first-line {
    font-variant-caps: small-caps;
    letter-spacing: 0.04em;
    color: var(--ink-2);
  }
  .article-body h2 {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 30px;
    line-height: 1.2;
    letter-spacing: -0.015em;
    margin: 2em 0 0.6em;
    color: var(--ink);
  }
  .article-body h3 {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: 22px;
    margin: 1.6em 0 0.4em;
    color: var(--ink);
  }
  .article-body blockquote {
    margin: 1.6em 0;
    padding: 0 0 0 24px;
    border-left: 2px solid var(--accent);
    font-family: var(--serif);
    font-style: italic;
    color: var(--ink-2);
    font-size: 22px;
    line-height: 1.45;
  }
  .article-body a { color: var(--ink); }
  .article-body img {
    max-width: 100%;
    height: auto;
    margin: 1.2em 0;
    border-radius: 2px;
  }
  .article-body sup a {
    text-decoration: none;
    font-family: var(--sans);
    font-size: 0.7em;
    color: var(--accent);
    font-weight: 600;
    padding: 0 2px;
  }

  .footnotes {
    margin-top: 88px;
    padding-top: 28px;
    border-top: 1px solid var(--rule);
    max-width: var(--measure);
    font-family: var(--sans);
  }
  .footnotes h2 {
    font-family: var(--mono);
    font-size: 11.5px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-3);
    margin: 0 0 16px;
    font-weight: 500;
  }
  .footnotes ol { padding-left: 1.6em; }
  .footnotes li {
    font-size: 14px;
    line-height: 1.6;
    color: var(--ink-2);
    margin-bottom: 10px;
  }

  .article-foot {
    max-width: var(--measure);
    margin: 88px 0 0;
    padding-top: 28px;
    border-top: 1px solid var(--rule);
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 24px;
    font-family: var(--mono);
    font-size: 11.5px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink-3);
  }
  .article-foot a { text-decoration: none; color: var(--ink-2); }
  .article-foot a:hover { color: var(--accent); }