/* ── GitHub page overrides ── */
    .pub-hero {
      position: relative;
      padding: 160px 0 80px;
      overflow: hidden;
    }
    .pub-hero-bg {
      position: absolute;
      inset: 0;
      background-image: url('../gfx/molecular-foundation.png');
      background-size: cover;
      background-position: center;
      filter: brightness(0.4) saturate(1.1);
      z-index: 0;
    }
    .pub-hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(5,13,26,0.5) 0%, rgba(5,13,26,0.95) 100%);
      z-index: 1;
    }
    .pub-hero-content { position: relative; z-index: 2; }

    /* ── Publication card (reused) ── */
    .pub-card {
      background: var(--card-bg);
      border: 1px solid var(--border-glow);
      border-radius: 12px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      height: 100%;
      backdrop-filter: blur(8px);
      transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    }
    .pub-card:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
      box-shadow: 0 12px 40px rgba(0,198,255,0.12);
    }

    .pub-graphic {
      width: 100%;
      height: 110px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 0.25rem;
      font-family: 'Rajdhani', sans-serif;
    }
    .pub-graphic .venue-abbr {
      font-size: 1.6rem;
      font-weight: 700;
      letter-spacing: 0.05em;
      color: #fff;
      text-shadow: 0 2px 12px rgba(0,0,0,0.5);
    }
    .pub-graphic .venue-year {
      font-size: 0.75rem;
      letter-spacing: 0.15em;
      color: rgba(255,255,255,0.7);
    }

    .pub-body { padding: 1.2rem; display: flex; flex-direction: column; flex: 1; }
    .pub-number { font-size: 0.7rem; color: var(--accent); letter-spacing: 0.15em; margin-bottom: 0.4rem; }
    .pub-title {
      font-family: 'Rajdhani', sans-serif;
      font-size: 1rem;
      font-weight: 600;
      color: #fff;
      line-height: 1.35;
      margin-bottom: 0.5rem;
      text-decoration: none;
      display: block;
    }
    .pub-title:hover { color: var(--accent); }
    .pub-venue {
      font-size: 0.72rem;
      letter-spacing: 0.06em;
      color: var(--text-light);
      opacity: 0.65;
      margin-bottom: 0.7rem;
    }
    .pub-summary {
      font-size: 0.82rem;
      color: var(--text-light);
      opacity: 0.75;
      line-height: 1.55;
      flex: 1;
      margin-bottom: 0.8rem;
    }
    .pub-link {
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
      font-size: 0.75rem;
      color: var(--accent);
      text-decoration: none;
      letter-spacing: 0.05em;
      margin-top: auto;
      opacity: 0.85;
      transition: opacity 0.2s;
    }
    .pub-link:hover { opacity: 1; color: var(--accent); text-decoration: underline; }

    /* Repo card backgrounds */
    .bg-gh-green  { background: linear-gradient(135deg, #001a0d 0%, #002a14 100%); }
    .bg-gh-blue   { background: linear-gradient(135deg, #00091a 0%, #001433 100%); }
    .bg-gh-teal   { background: linear-gradient(135deg, #0b2a2a 0%, #0d3d3d 100%); }
    .bg-gh-orange { background: linear-gradient(135deg, #1a0a00 0%, #2a1200 100%); }
    .bg-gh-purple { background: linear-gradient(135deg, #0d001a 0%, #1a0030 100%); }
    .bg-gh-red    { background: linear-gradient(135deg, #1a0000 0%, #2d0000 100%); }
    .bg-gh-indigo { background: linear-gradient(135deg, #030818 0%, #080f2a 100%); }

    .accent-gh-green  { color: #81c784; }
    .accent-gh-blue   { color: #90caf9; }
    .accent-gh-teal   { color: #4dd0e1; }
    .accent-gh-orange { color: #ffb74d; }
    .accent-gh-purple { color: #ce93d8; }
    .accent-gh-red    { color: #ef9a9a; }
    .accent-gh-indigo { color: #9fa8da; }