:root {
      --yellow: #ffd40f;
      --logo-accent: #ffd40f;
      --logo-text: #000;
      --ink: #000;
      --paper: #fff;
      --muted: rgba(0, 0, 0, 0.64);
      --rule: rgba(0, 0, 0, 0.18);
      --divider: rgba(0, 0, 0, 0.32);
      --sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
      --mono: "IBM Plex Mono", "Courier New", monospace;
      color-scheme: light;
    }

    :root[data-theme="dark"] {
      --logo-text: #f2f2ee;
      --ink: #f2f2ee;
      --paper: #0e0e0e;
      --muted: rgba(255, 255, 255, 0.66);
      --rule: rgba(255, 255, 255, 0.22);
      --divider: rgba(255, 255, 255, 0.32);
      color-scheme: dark;
    }

    *, *::before, *::after { box-sizing: border-box; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: var(--sans);
      font-size: 17px;
      line-height: 1.55;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; }
    h1, h2, h3, p { margin: 0; }
    :focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; box-shadow: 0 0 0 6px var(--yellow); }
    .skip-link { position: fixed; top: -100px; left: 16px; z-index: 300; display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px; background: var(--yellow); color: #000; border: 1px solid #000; font: 600 13px/1 var(--sans); text-decoration: none; }
    .skip-link:focus-visible { top: 12px; box-shadow: none; }
    .shell { width: min(1320px, calc(100% - clamp(32px, 6vw, 80px))); margin-inline: auto; }
    header { border-bottom: 1px solid var(--ink); }
    .header-shell { min-height: 72px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; padding-block: 6px; }
    .brand-group { display: flex; align-items: center; gap: 9px; }
    .brand { display: inline-flex; align-items: center; text-decoration: none; }
    .brand-logo { width: 32px; height: auto; display: block; }
    .brand-logo__accent { fill: var(--logo-accent); }
    .brand-logo__ink { fill: var(--logo-text); }
    .brand-divider { width: 1px; height: 18px; background: var(--divider); }
    .brand-label { display: inline-block; inline-size: 110px; font: 500 10px/1.2 var(--mono); letter-spacing: 0.04em; white-space: nowrap; }
    .theme-toggle { position: relative; display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; padding: 0; border: 0; border-radius: 50%; background: transparent; color: var(--ink); cursor: pointer; }
    .theme-toggle::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; }
    .theme-toggle:hover { background: var(--yellow); color: #000; }
    .theme-toggle svg { width: 16px; height: 16px; }
    .theme-toggle .icon-sun { display: none; }
    [data-theme="dark"] .theme-toggle .icon-sun { display: block; }
    [data-theme="dark"] .theme-toggle .icon-moon { display: none; }
    .header-actions { margin-left: auto; display: flex; align-items: center; }
    .lang-switcher { display: flex; align-items: center; gap: 2px; }
    .lang-switcher a { display: inline-flex; align-items: center; justify-content: center; min-width: 44px; min-height: 44px; color: var(--muted); font: 500 10px/1 var(--mono); letter-spacing: 0.06em; text-decoration: none; }
    .lang-switcher a:hover { color: var(--ink); }
    .lang-switcher a[aria-current="page"] { color: var(--ink); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; text-decoration-color: var(--yellow); }
    .lang-switcher span { color: var(--rule); font: 400 10px/1 var(--mono); }
    main { padding-block: clamp(56px, 9vw, 112px) clamp(72px, 10vw, 128px); }
    .kicker { margin: 0 0 12px; color: var(--muted); font: 500 10px/1.3 var(--mono); letter-spacing: 0.11em; text-transform: uppercase; }
    h1 { margin: 0 0 16px; font-size: clamp(2.8rem, 7vw, 5.2rem); font-weight: 600; line-height: 0.96; letter-spacing: -0.045em; }
    .lead { max-width: 54ch; margin: 0 0 34px; color: var(--muted); font-size: 17px; }
    .post-list { border-top: 1px solid var(--ink); }
    .post { display: grid; grid-template-columns: 100px minmax(0, 1fr); gap: 18px; align-items: baseline; padding: 18px 0; border-bottom: 1px solid var(--rule); }
    .post-meta { display: grid; gap: 4px; }
    .post time { color: var(--muted); font: 500 10px/1.4 var(--mono); letter-spacing: 0.05em; }
    .post-topic { color: var(--muted); font: 500 9px/1.4 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
    .post h2 { font-size: clamp(1.2rem, 2.4vw, 1.55rem); font-weight: 500; letter-spacing: -0.02em; line-height: 1.2; }
    .post h2 a { text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--divider); }
    .post h2 a:hover { text-decoration-color: var(--ink); }
    .note { margin-top: 18px; color: var(--muted); font: 400 10px/1.6 var(--mono); }
    .back { display: inline-flex; align-items: center; min-height: 44px; margin-top: 24px; font: 500 12px/1 var(--mono); text-decoration: underline; text-underline-offset: 4px; text-decoration-color: var(--divider); }
    footer { padding-block: 24px 40px; border-top: 1px solid var(--ink); color: var(--muted); font: 400 11px/1.5 var(--mono); }
    @media (max-width: 620px) {
      .header-shell { align-items: flex-start; }
      .header-actions { width: 100%; justify-content: flex-end; }
      .post { grid-template-columns: 1fr; gap: 6px; }
      .post-meta { grid-auto-flow: column; justify-content: start; gap: 10px; }
    }