:root {
    --paper:   #F4F1EA;
    --paper-2: #ECE7DC;
    --rule:    #CFC6B3;
    --ink:     #1A1F2C;
    --ink-2:   #3A4151;
    --muted:   #6E6657;
    --rust:    #8B3A2E;
    --sans:  "Helvetica Neue", Helvetica, Arial, sans-serif;
    --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
    --pad-x: clamp(28px, 6vw, 96px);
  }
  * { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; }
  body {
    font-family: var(--sans);
    color: var(--ink);
    background: var(--paper);
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }
  a { color: var(--rust); text-decoration: none; }
  a:hover { text-decoration: underline; }

  .nav { border-bottom: 1px solid var(--rule); background: var(--paper); }
  .nav-inner {
    max-width: 1000px; margin: 0 auto; padding: 20px var(--pad-x);
    display: flex; align-items: center; justify-content: space-between;
  }
  .brand {
    font-family: var(--serif); font-style: italic; font-weight: 500; font-size: 21px;
    display: flex; align-items: baseline; gap: 10px; color: var(--ink);
  }
  .brand .mark { width: 9px; height: 9px; border-radius: 50%; background: var(--rust); display: inline-block; }
  .nav a.back { font-size: 14px; letter-spacing: 0.04em; color: var(--ink-2); }

  .wrap { max-width: 820px; margin: 0 auto; padding: 72px var(--pad-x) 96px; }

  .eyebrow {
    font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase;
    color: var(--rust); font-weight: 600; margin: 0 0 20px;
  }
  h1 {
    font-family: var(--sans); font-size: clamp(38px, 6vw, 58px); font-weight: 500;
    letter-spacing: -0.02em; line-height: 1.05; margin: 0 0 24px; color: var(--ink);
  }
  .meta {
    font-family: var(--serif); font-style: italic; font-size: 17px; color: var(--muted);
    border-bottom: 1px solid var(--rule); padding-bottom: 32px; margin-bottom: 8px;
  }

  .group {
    font-family: var(--sans); font-size: 13px; letter-spacing: 0.2em; text-transform: uppercase;
    color: var(--rust); font-weight: 600;
    margin: 64px 0 4px; padding-bottom: 14px; border-bottom: 2px solid var(--ink);
  }
  .group .sub {
    display: block; font-family: var(--serif); font-style: italic; font-size: 15px;
    letter-spacing: 0.02em; text-transform: none; color: var(--muted); margin-top: 8px; font-weight: 400;
  }

  h2 {
    font-family: var(--sans); font-size: 22px; font-weight: 500; letter-spacing: -0.01em;
    color: var(--ink); margin: 40px 0 12px;
    display: flex; gap: 14px; align-items: baseline;
  }
  h2 .n {
    font-family: var(--serif); font-style: italic; font-size: 17px; color: var(--rust); font-weight: 400;
    flex: 0 0 auto;
  }
  p { margin: 0 0 16px; color: var(--ink-2); }
  ul { margin: 0 0 16px; padding-left: 22px; color: var(--ink-2); }
  li { margin-bottom: 8px; }
  strong { color: var(--ink); font-weight: 600; }
  .ai-flag {
    display: inline-block; font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase;
    color: var(--rust); font-weight: 700; background: rgba(139,58,46,0.09);
    border: 1px solid rgba(139,58,46,0.25); border-radius: 999px; padding: 3px 10px;
    vertical-align: middle; margin-left: 10px;
  }

  footer { background: var(--ink); color: rgba(244,241,234,0.55); padding: 32px 0; font-size: 13px; }
  .foot-inner {
    max-width: 1000px; margin: 0 auto; padding: 0 var(--pad-x);
    display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  }
  .foot-inner .brand-foot { font-family: var(--serif); font-style: italic; font-size: 17px; color: var(--paper); }