.art-hero {
    padding: 160px var(--gutter) 80px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }
  .art-hero-inner { max-width: 800px; margin: 0 auto; }
  .art-meta {
    display: flex; gap: 16px; align-items: center;
    font-family: var(--font-mono); font-size: 11px;
    letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--muted); margin-bottom: 24px;
  }
  .art-meta .cat { color: var(--leaf); }
  .art-hero h1 { font-size: clamp(32px, 5vw, 64px); font-weight: 300; letter-spacing: -0.035em; line-height: 1.05; margin-bottom: 32px; }
  .art-lede { font-size: 18px; line-height: 1.6; color: var(--muted); max-width: 680px; }
  .art-cover { width: 100%; max-height: 480px; object-fit: cover; display: block; }
  .art-body { max-width: 800px; margin: 0 auto; padding: 72px var(--gutter); font-size: 17px; line-height: 1.75; color: var(--ink); }
  .art-body h2 { font-size: clamp(22px, 3vw, 30px); font-weight: 500; letter-spacing: -0.025em; margin: 56px 0 20px; line-height: 1.2; }
  .art-body h3 { font-size: 20px; font-weight: 500; margin: 40px 0 16px; }
  .art-body p { margin-bottom: 24px; }
  .art-body ul, .art-body ol { margin: 0 0 24px 24px; display: flex; flex-direction: column; gap: 8px; }
  .art-body li { line-height: 1.6; }
  .art-body strong { font-weight: 600; color: var(--ink); }
  .art-body h2:first-child { margin-top: 0; }
  .art-cta { background: var(--ink); color: var(--paper); padding: 72px var(--gutter); text-align: center; }
  .art-cta h2 { font-size: clamp(28px, 4vw, 48px); font-weight: 300; letter-spacing: -0.03em; margin-bottom: 16px; }
  .art-cta p { opacity: 0.7; margin-bottom: 32px; }
  .art-nav { display: flex; gap: 0; border-top: 1px solid var(--line); }
  .art-nav-item { flex: 1; padding: 40px 32px; display: flex; flex-direction: column; gap: 8px; text-decoration: none; color: var(--ink); transition: background 200ms; border-right: 1px solid var(--line); }
  .art-nav-item:last-child { border-right: none; }
  .art-nav-item:hover { background: var(--mist); }
  .art-nav-dir { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
  .art-nav-title { font-size: 15px; font-weight: 500; letter-spacing: -0.01em; line-height: 1.3; }
  .art-nav-next { text-align: right; }
  @media (max-width: 640px) { .art-nav { flex-direction: column; } .art-nav-item { border-right: none; border-bottom: 1px solid var(--line); } .art-nav-next { text-align: left; } }