.article-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: clamp(24px, 3vw, 40px);
    align-items: start;
  }
  .article-layout .toc {
    position: static;
    max-height: none;
    overflow: visible;
  }

  /* Featured image */
  .article-hero {
    aspect-ratio: 21/9;
    border-radius: 20px;
    background:
      radial-gradient(60% 80% at 70% 30%, color-mix(in oklab, var(--accent) 30%, transparent) 0%, transparent 60%),
      radial-gradient(40% 60% at 20% 80%, color-mix(in oklab, var(--warm) 18%, transparent) 0%, transparent 60%),
      linear-gradient(135deg, var(--brand-navy) 0%, var(--ink-elev) 100%);
    border: 1px solid var(--ink-line-2);
    margin-bottom: 56px;
    position: relative;
    overflow: hidden;
  }
  .article-hero::before {
    content: "";
    position: absolute; inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.06) 1px, transparent 0);
    background-size: 28px 28px;
    mask-image: radial-gradient(ellipse 90% 80% at 50% 50%, black 30%, transparent 80%);
  }
  .article-hero-tag {
    position: absolute;
    top: 28px; left: 28px;
    z-index: 2;
    padding: 8px 14px;
    background: rgba(15, 22, 38, 0.75);
    backdrop-filter: blur(10px);
    border: 1px solid var(--ink-line-2);
    border-radius: 999px;
    font-family: var(--sans);
    font-weight: 500;
    font-size: 12px;
    color: var(--accent-soft);
    text-transform: uppercase;
    letter-spacing: 0.1em;
  }
  .article-hero-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
  }
  .article-hero.has-image::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(
      to top,
      color-mix(in oklab, var(--brand-navy) 55%, transparent) 0%,
      transparent 55%
    );
    pointer-events: none;
  }
  .article-hero.has-image::before {
    opacity: 0.35;
  }

  /* Author card */
  .author-card {
    display: flex;
    gap: 20px;
    align-items: center;
    padding: 24px 26px;
    background: var(--ink-elev);
    border: 1px solid var(--ink-line);
    border-radius: 16px;
    margin: 60px 0;
  }
  .author-avatar {
    width: 60px; height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--brand-navy) 0%, var(--accent) 100%);
    display: grid; place-items: center;
    font-family: var(--display);
    font-weight: 500;
    font-size: 20px;
    color: #fff;
    flex-shrink: 0;
  }
  .author-name {
    font-family: var(--display);
    font-weight: 500;
    font-size: 17px;
    color: var(--fg-100);
    letter-spacing: -0.01em;
    margin: 0 0 4px;
  }
  .author-role { font-size: 13px; color: var(--fg-400); margin: 0; }

  /* Share strip */
  .share-strip {
    margin: 48px 0 0;
    padding: 24px 0;
    border-top: 1px solid var(--ink-line);
    border-bottom: 1px solid var(--ink-line);
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
  }
  .share-label {
    font-family: var(--sans);
    font-weight: 500;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--fg-400);
  }
  .share-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
  .share-btn {
    width: 38px; height: 38px;
    border-radius: 999px;
    background: rgba(127,127,127,0.05);
    border: 1px solid var(--ink-line);
    display: grid; place-items: center;
    color: var(--fg-200);
    transition: all .3s;
    cursor: pointer;
    font: inherit;
    padding: 0;
  }
  .share-btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
  .share-btn--copy {
    width: auto;
    min-height: 38px;
    padding: 0 16px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--sans);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.01em;
    color: var(--fg-200);
    white-space: nowrap;
  }
  .share-btn--copy.is-copied {
    background: color-mix(in oklab, var(--accent) 14%, transparent);
    border-color: color-mix(in oklab, var(--accent) 40%, transparent);
    color: var(--accent-soft);
  }
  .share-btn--copy .share-btn-text {
    line-height: 1;
  }