  <style>
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; overflow-x: hidden; }
    body { font-family: 'Inter', system-ui, sans-serif; color: #111827; background: #ffffff; overflow-x: hidden; }
    .font-serif { font-family: 'Merriweather', Georgia, serif; }

    /* ── Nav dropdown ── */
    .nav-dropdown { position: relative; display: inline-block; }
    .nav-dropdown-menu {
      display: none; position: absolute; top: 100%; left: 0;
      background: #3e2557; min-width: 200px; z-index: 50;
      border-top: 2px solid #6b1fad;
    }
    .nav-dropdown:hover .nav-dropdown-menu { display: block; }
    .nav-dropdown-menu a {
      display: block; padding: 10px 16px;
      color: #e5e7eb; font-size: 0.8125rem; letter-spacing: 0.01em;
      text-decoration: none; border-bottom: 1px solid rgba(255,255,255,0.08);
      transition: background 0.15s, color 0.15s;
    }
    .nav-dropdown-menu a:hover { background: #6b1fad; color: #fff; }

    /* ── Nav links ── */
    .nav-links-scroll { flex: 1 1 auto; min-width: 0; }
    .band-link {
      color: #e5e7eb; font-size: 0.8125rem; font-weight: 400;
      letter-spacing: 0.02em; text-decoration: none;
      display: flex; align-items: center; gap: 4px;
      padding: 0 2px; transition: color 0.15s;
    }
    .band-link:hover { color: #fff; }
    .nav-top-link {
      position: relative; text-decoration: none;
      font-size: 0.8125rem; font-weight: 500; color: #374151;
      letter-spacing: 0.01em; padding-bottom: 2px; transition: color 0.15s;
    }
    .nav-top-link::after {
      content: ''; position: absolute; bottom: -1px; left: 0;
      width: 0; height: 1px; background: #6b1fad; transition: width 0.2s;
    }
    .nav-top-link:hover { color: #6b1fad; }
    .nav-top-link:hover::after { width: 100%; }

    /* ── Search ── */
    .search-input {
      background: #fff; border: 1px solid rgba(255,255,255,0.3); color: #111827;
      padding: 6px 12px 6px 36px; font-size: 0.8125rem; font-family: 'Inter', sans-serif;
      outline: none; width: 240px; transition: border-color 0.15s;
    }
    .search-input:focus { border-color: #6b1fad; }
    .search-wrapper { position: relative; display: flex; align-items: center; }
    .search-icon {
      position: absolute; left: 10px; top: 50%; transform: translateY(-50%);
      color: #6b7280; pointer-events: none;
    }

    /* ── Volume tag ── */
    .volume-tag {
      display: inline-block; font-size: 0.7rem; font-weight: 600;
      letter-spacing: 0.07em; text-transform: uppercase;
      color: #6b1fad; border: 1px solid #6b1fad; padding: 1px 8px; margin-bottom: 8px;
    }

    /* ── Footer ── */
    .footer-link { color: #a5b4fc; text-decoration: none; font-size: 0.8rem; }
    .footer-link:hover { color: #fff; text-decoration: underline; }

    /* ── Issue meta ── */
    .issue-meta-item {
      border-left: 2px solid rgba(255,255,255,0.15);
      padding-left: 16px;
    }

    /* ── Article grid ── */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    @media (max-width: 1024px) { .article-grid { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 640px)  { .article-grid { grid-template-columns: 1fr; } }

    /* ── Article card ── */
    .article-card {
      background: #fff;
      border: 1px solid #e5e7eb;
      border-top: 3px solid #020c45;
      display: flex;
      flex-direction: column;
      transition: box-shadow 0.2s ease, border-top-color 0.2s ease, transform 0.2s ease;
    }
    .article-card:hover {
      box-shadow: 0 8px 28px rgba(2,12,69,0.11);
      border-top-color: #6b1fad;
      transform: translateY(-2px);
    }

    .card-body { padding: 22px 22px 0; flex: 1; display: flex; flex-direction: column; }

    .card-subject {
      font-size: 0.67rem; font-weight: 700; letter-spacing: 0.09em;
      text-transform: uppercase; color: #6b1fad; margin-bottom: 10px;
    }
    .card-title {
      font-family: 'Merriweather', Georgia, serif;
      font-size: 0.9375rem; font-weight: 700; color: #020c45;
      line-height: 1.5; margin-bottom: 9px; flex: 0;
    }
    .card-authors {
      font-size: 0.8rem; color: #374151; margin-bottom: 6px;
      font-style: italic; line-height: 1.4;
    }
    .card-doi {
      font-family: 'JetBrains Mono', monospace;
      font-size: 0.68rem; color: #9ca3af; margin-bottom: 12px;
      word-break: break-all;
    }
    .card-doi a { color: #9ca3af; text-decoration: none; transition: color 0.12s; }
    .card-doi a:hover { color: #6b1fad; text-decoration: underline; }

    .card-abstract {
      font-size: 0.8125rem; color: #6b7280; line-height: 1.65;
      flex: 1; margin-bottom: 0;
    }

    /* ── Card action area ── */
    .card-actions {
      padding: 14px 22px 18px;
      display: flex;
      gap: 8px;
      border-top: 1px solid #f3f4f6;
      margin-top: 16px;
    }

    .btn-read-html {
      flex: 1;
      display: inline-flex; align-items: center; justify-content: center; gap: 6px;
      background: #020c45; color: #fff; border: none;
      padding: 9px 12px; font-size: 0.75rem; font-family: 'Inter', sans-serif;
      font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase;
      text-decoration: none; cursor: pointer;
      transition: background 0.15s;
      white-space: nowrap;
    }
    .btn-read-html:hover { background: #6b1fad; }

    .btn-pdf {
      display: inline-flex; align-items: center; justify-content: center; gap: 6px;
      background: transparent; color: #374151;
      border: 1px solid #d1d5db;
      padding: 9px 12px; font-size: 0.75rem; font-family: 'Inter', sans-serif;
      font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase;
      text-decoration: none; cursor: pointer;
      transition: background 0.15s, border-color 0.15s, color 0.15s;
      white-space: nowrap;
    }
    .btn-pdf:hover { background: #f3f4f6; border-color: #9ca3af; color: #111827; }
    .btn-pdf.disabled {
      opacity: 0.35; cursor: not-allowed; pointer-events: none;
    }

    /* ── Loading / Error ── */
    #loading-state, #error-state, #empty-state {
      grid-column: 1 / -1;
      display: flex; flex-direction: column;
      align-items: center; justify-content: center;
      padding: 72px 24px; text-align: center;
    }
    .spinner {
      width: 34px; height: 34px;
      border: 3px solid #e5e7eb; border-top-color: #020c45;
      border-radius: 50%; animation: spin 0.7s linear infinite;
      margin-bottom: 18px;
    }
    @keyframes spin { to { transform: rotate(360deg); } }

    /* ── Guideline list ── */
    .guideline-list li { padding-left: 16px; position: relative; margin-bottom: 6px; font-size: 0.875rem; color: #374151; }
    .guideline-list li::before { content: '—'; position: absolute; left: 0; color: #3e2557; font-weight: 700; }

    /* ── Responsive nav ── */
    @media (max-width: 767px) {
      .header-right-nav { display: none !important; }
      .header-inner { padding-top: 12px !important; padding-bottom: 12px !important; }
      .nav-search-section { display: none !important; }
      .nav-band-inner { padding-left: 0 !important; padding-right: 0 !important; }
      .band-link { font-size: 0.75rem !important; }
      .nav-links-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; -ms-overflow-style: none; }
      .nav-links-scroll::-webkit-scrollbar { display: none; }
      .issue-meta-item { border-left: none !important; padding-left: 0 !important; }
    }
  </style>