:root {
      --cc-canvas:    #F2EADF;
      --cc-panel:     #FFF9F2;
      --cc-paper:     #FFFDF9;
      --cc-ink:       #1D2428;
      --cc-muted-ink: #5E666A;
      --cc-accent:    #954524;
      --cc-accent-ink:#FFFDF9;
      --cc-line:      #D7CCBE;
      --cc-steel:     #49606D;
      --cc-steel-tint:#E8EFEE;
      --cc-sage:      #4E5A46;
      --cc-warm-hl:   #E9C89A;
      --cc-shadow:    0 10px 18px rgba(61,36,23,0.08);
      --cc-mono:      ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, monospace;
      --measure:      680px;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html, body { margin: 0; padding: 0; }
    body {
      background: var(--cc-canvas);
      color: var(--cc-ink);
      font-family: 'SpaceGrotesk_500Medium', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 500;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; }

    /* Skip link */
    .skip-link {
      position: absolute; left: 16px; top: 16px; z-index: 50;
      background: var(--cc-ink); color: #fff;
      padding: 10px 16px; border-radius: 999px;
      text-decoration: none; font-size: 14px;
      transform: translateY(-160%); transition: transform 0.15s ease;
    }
    .skip-link:focus { transform: translateY(0); outline: 2px solid var(--cc-accent); outline-offset: 2px; }

    /* Top bar */
    .topbar-wrap { background: var(--cc-canvas); position: sticky; top: 0; z-index: 20; }
    .topbar {
      max-width: 1120px; margin: 0 auto;
      display: flex; align-items: center; justify-content: space-between;
      padding: 16px 24px;
      border-bottom: 1px solid var(--cc-line);
    }
    .topbar__brand {
      display: flex; align-items: center; gap: 10px;
      text-decoration: none; color: var(--cc-ink);
    }
    .topbar__logo { height: 26px; width: auto; display: block; }
    .topbar__brand b {
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 15px; letter-spacing: 0.1px;
    }
    .topbar__nav { display: flex; align-items: center; gap: 20px; }
    .topbar__nav a {
      font-family: 'SpaceGrotesk_500Medium', 'Space Grotesk', system-ui, sans-serif;
      font-size: 13px; color: var(--cc-muted-ink); text-decoration: none;
      letter-spacing: 0.1px;
    }
    .topbar__nav a.is-active { color: var(--cc-ink); }
    .topbar__cta {
      display: inline-flex; align-items: center; gap: 6px;
      background: var(--cc-accent); color: var(--cc-accent-ink) !important;
      border-radius: 999px; padding: 8px 14px;
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif !important;
      font-weight: 700 !important; font-size: 12px !important;
      letter-spacing: 0.4px; text-transform: uppercase;
    }

    /* Article shell */
    .article-shell {
      background: var(--cc-panel);
      border: 1px solid var(--cc-line);
      border-top: none;
      border-radius: 0 0 24px 24px;
      padding: 36px 0 64px;
      max-width: 1120px;
      margin: 0 auto;
    }
    .measure { max-width: var(--measure); margin: 0 auto; padding: 0 24px; }

    /* Breadcrumb */
    .crumb {
      font-family: var(--cc-mono); font-size: 12px;
      color: var(--cc-muted-ink); letter-spacing: 0.1px; margin: 0 0 28px;
    }
    .crumb a { color: var(--cc-muted-ink); text-decoration: none; }
    .crumb a:hover { color: var(--cc-accent); }
    .crumb .sep { opacity: 0.5; margin: 0 8px; }
    .crumb .here { color: var(--cc-ink); }

    /* Article hero */
    .article__eyebrow {
      display: inline-block;
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 10.5px; letter-spacing: 1.3px;
      text-transform: uppercase; color: var(--cc-accent); margin-bottom: 14px;
    }
    .article__h1 {
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 42px; line-height: 1.12;
      color: var(--cc-ink); margin: 0 0 18px; letter-spacing: -0.6px;
    }
    .article__meta {
      display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center;
      font-size: 12px; color: var(--cc-muted-ink);
      text-transform: uppercase; letter-spacing: 0.6px;
      padding-bottom: 22px; border-bottom: 1px solid var(--cc-line); margin-bottom: 36px;
    }
    .article__meta .dot {
      width: 3px; height: 3px; border-radius: 999px;
      background: currentColor; opacity: 0.6; flex-shrink: 0;
    }
    .prof {
      display: inline-flex; align-items: center; gap: 6px;
      border: 1px solid var(--cc-line); border-radius: 999px;
      padding: 3px 10px; font-size: 10.5px; color: var(--cc-ink);
      background: var(--cc-paper); letter-spacing: 0.8px;
    }
    .prof .swatch { width: 7px; height: 7px; border-radius: 999px; background: var(--cc-sage); flex-shrink: 0; }
    .prof.int .swatch { background: var(--cc-steel); }
    .prof.adv .swatch { background: var(--cc-ink); }

    /* Prose */
    .prose { font-size: 18px; line-height: 1.7; color: var(--cc-ink); }
    .prose p { margin: 0 0 22px; }
    .prose h2 {
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 26px; line-height: 1.2; letter-spacing: -0.3px;
      color: var(--cc-ink); margin: 48px 0 14px; scroll-margin-top: 80px;
    }
    .prose h3 {
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 19px; line-height: 1.3;
      color: var(--cc-ink); margin: 32px 0 10px;
    }
    .prose a {
      color: var(--cc-accent);
      text-decoration-line: underline; text-decoration-thickness: 1px;
      text-underline-offset: 3px;
      text-decoration-color: color-mix(in srgb, var(--cc-accent) 50%, transparent);
    }
    .prose a:hover { text-decoration-color: var(--cc-accent); }
    .prose ul, .prose ol { padding-left: 22px; margin: 0 0 24px; }
    .prose li { margin-bottom: 8px; }
    .prose li::marker { color: var(--cc-muted-ink); }
    .prose code {
      font-family: var(--cc-mono); font-size: 0.9em;
      background: var(--cc-paper); border: 1px solid var(--cc-line);
      padding: 1px 6px; border-radius: 4px;
    }
    .prose pre {
      font-family: var(--cc-mono); font-size: 14px; line-height: 1.55;
      background: var(--cc-paper); border: 1px solid var(--cc-line);
      border-left: 3px solid var(--cc-steel); border-radius: 10px;
      padding: 14px 18px; overflow-x: auto; margin: 8px 0 26px;
      color: var(--cc-ink);
    }
    .prose pre code { background: none; border: none; padding: 0; }
    .prose blockquote {
      margin: 22px 0; padding: 2px 0 2px 20px;
      border-left: 3px solid var(--cc-accent);
      font-style: italic; color: var(--cc-muted-ink); font-size: 17px;
    }
    .prose table { width: 100%; border-collapse: collapse; margin: 4px 0 30px; font-size: 15px; }
    .prose thead th {
      text-align: left;
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 11px; letter-spacing: 0.7px; text-transform: uppercase;
      color: var(--cc-muted-ink); padding: 10px 12px; border-bottom: 1px solid var(--cc-line);
    }
    .prose tbody td { padding: 12px; border-bottom: 1px solid var(--cc-line); color: var(--cc-ink); vertical-align: top; }
    .prose tbody tr:last-child td { border-bottom: none; }
    .prose tbody tr:nth-child(even) td { background: rgba(255,253,249,0.6); }
    .prose td:first-child {
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; width: 30%;
    }

    /* Calculator CTA card */
    .calc-cta {
      margin: 48px auto 0; padding: 26px 28px;
      background: var(--cc-ink); color: var(--cc-muted-ink);
      border-radius: 20px; position: relative; overflow: hidden;
    }
    .calc-cta::before {
      content: ""; position: absolute; right: -80px; top: -80px;
      width: 220px; height: 220px; border-radius: 50%;
      background: var(--cc-accent); opacity: 0.12;
    }
    .calc-cta .eyebrow {
      color: var(--cc-accent);
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 10.5px; letter-spacing: 1.3px;
      text-transform: uppercase; display: block; margin-bottom: 10px;
    }
    .calc-cta h3 {
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 24px; line-height: 1.2;
      color: var(--cc-paper); margin: 0 0 6px; letter-spacing: -0.2px;
    }
    .calc-cta p { font-size: 14px; line-height: 1.55; margin: 0 0 18px; max-width: 52ch; }
    .calc-cta__row { display: flex; gap: 10px; flex-wrap: wrap; }
    .calc-cta__btn {
      display: inline-flex; align-items: center; gap: 8px;
      background: var(--cc-accent); color: var(--cc-accent-ink);
      border-radius: 999px; padding: 11px 18px; text-decoration: none;
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 13px; letter-spacing: 0.3px; text-transform: uppercase;
    }
    .calc-cta__btn.sec {
      background: transparent; color: var(--cc-paper);
      border: 1px solid rgba(255,253,249,0.3);
    }

    /* Related articles */
    .related { margin: 56px auto 0; max-width: var(--measure); padding: 0 24px; }
    .related__label {
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 10.5px; letter-spacing: 1.3px; text-transform: uppercase;
      color: var(--cc-accent); margin-bottom: 14px;
    }
    .related__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .related-card {
      background: var(--cc-paper); border: 1px solid var(--cc-line);
      border-radius: 14px; padding: 16px 18px;
      text-decoration: none; color: inherit; display: block;
      transition: border-color 180ms ease;
    }
    .related-card:hover { border-color: var(--cc-accent); }
    .related-card__eyebrow {
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 9.5px; letter-spacing: 1.3px; text-transform: uppercase;
      color: var(--cc-muted-ink); margin-bottom: 6px;
    }
    .related-card h4 {
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 16px; line-height: 1.3; color: var(--cc-ink);
      margin: 0 0 6px;
    }
    .related-card p { font-size: 13px; line-height: 1.45; color: var(--cc-muted-ink); margin: 0; }

    /* Footer */
    .foot {
      margin: 60px auto 0; max-width: 1120px;
      padding: 26px 24px 0; border-top: 1px solid var(--cc-line);
      display: flex; flex-wrap: wrap; gap: 12px 22px; align-items: center;
      font-size: 12px; color: var(--cc-muted-ink);
    }
    .foot a { color: var(--cc-muted-ink); text-decoration: none; }
    .foot a:hover { color: var(--cc-accent); }
    .foot .spacer { flex: 1; }
    .foot .mark { height: 20px; width: auto; opacity: 0.7; }

    /* Article index */
    .index-shell {
      background: var(--cc-panel); border: 1px solid var(--cc-line);
      border-top: none; border-radius: 0 0 24px 24px;
      padding: 44px 0 54px; max-width: 1120px; margin: 0 auto;
    }
    .index__hero { max-width: 880px; margin: 0 auto 40px; padding: 0 24px; }
    .index__hero .eyebrow {
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 10.5px; letter-spacing: 1.3px; text-transform: uppercase;
      color: var(--cc-accent); margin-bottom: 10px; display: block;
    }
    .index__hero h1 {
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 46px; line-height: 1.1; color: var(--cc-ink);
      margin: 0 0 12px; letter-spacing: -0.6px;
    }
    .index__hero p { font-size: 17px; line-height: 1.55; color: var(--cc-muted-ink); margin: 0; max-width: 56ch; }
    .index__filters {
      max-width: 880px; margin: 0 auto 16px; padding: 0 24px 14px;
      display: flex; gap: 8px; flex-wrap: wrap; align-items: center;
      border-bottom: 1px solid var(--cc-line);
    }
    .index__filters b {
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 10.5px; letter-spacing: 1.1px; text-transform: uppercase;
      color: var(--cc-muted-ink); margin-right: 6px;
    }
    .tag {
      display: inline-block;
      font-family: 'SpaceGrotesk_500Medium', 'Space Grotesk', system-ui, sans-serif;
      font-size: 11px; letter-spacing: 0.5px; text-transform: uppercase;
      color: var(--cc-muted-ink); background: transparent;
      border: 1px solid var(--cc-line); border-radius: 999px; padding: 3px 10px;
      cursor: pointer; transition: background 140ms ease, color 140ms ease, border-color 140ms ease;
    }
    button.tag { appearance: none; font: inherit; line-height: inherit; }
    .tag[aria-pressed="true"] {
      background: var(--cc-accent); color: #fff; border-color: var(--cc-accent);
    }
    .index__list { max-width: 880px; margin: 0 auto; padding: 0 24px; }
    .entry {
      display: grid; grid-template-columns: 72px 1fr auto;
      gap: 20px; padding: 26px 0; border-bottom: 1px solid var(--cc-line);
      align-items: start;
    }
    .entry:last-child { border-bottom: none; }
    .entry__date {
      font-family: var(--cc-mono); color: var(--cc-muted-ink);
      font-size: 12px; letter-spacing: 0.1px; text-align: right; line-height: 1.4; padding-top: 4px;
    }
    .entry__date .day { color: var(--cc-ink); display: block; font-size: 22px; font-weight: 500; }
    .entry__date .mon { text-transform: uppercase; letter-spacing: 0.8px; font-size: 10.5px; }
    .entry__body a.title {
      display: block;
      font-family: 'SpaceGrotesk_700Bold', 'Space Grotesk', system-ui, sans-serif;
      font-weight: 700; font-size: 22px; line-height: 1.25; color: var(--cc-ink);
      margin: 0 0 6px; text-decoration: none; letter-spacing: -0.2px;
    }
    .entry__body a.title:hover { color: var(--cc-accent); }
    .entry__body p { font-size: 15px; line-height: 1.55; color: var(--cc-muted-ink); margin: 0 0 10px; max-width: 60ch; }
    .entry__meta {
      display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center;
      font-size: 11px; color: var(--cc-muted-ink);
      letter-spacing: 0.5px; text-transform: uppercase;
    }
    .entry__meta .dot { width: 3px; height: 3px; border-radius: 999px; background: currentColor; opacity: 0.55; flex-shrink: 0; }
    .entry__prof { display: inline-flex; align-items: center; gap: 5px; }
    .entry__prof .swatch { width: 7px; height: 7px; border-radius: 999px; background: var(--cc-sage); flex-shrink: 0; }
    .entry__prof.int .swatch { background: var(--cc-steel); }
    .entry__prof.adv .swatch { background: var(--cc-ink); }
    .entry__read {
      align-self: start; padding-top: 6px;
      font-family: var(--cc-mono); font-size: 12px; color: var(--cc-muted-ink);
      text-align: right; white-space: nowrap;
    }
    .entry__read b { color: var(--cc-ink); font-weight: 500; }

    [hidden] { display: none !important; }

    @media (max-width: 640px) {
      .article__h1 { font-size: 30px; }
      .index__hero h1 { font-size: 32px; }
      .related__grid { grid-template-columns: 1fr; }
      .entry { grid-template-columns: 1fr; gap: 10px; }
      .entry__date { text-align: left; display: flex; gap: 8px; align-items: baseline; padding: 0; }
      .entry__date .day { font-size: 14px; display: inline; }
      .entry__read { text-align: left; padding: 0; }
      .topbar__nav a:not(.topbar__cta) { display: none; }
    }