.hub-hero {
      position: relative; padding: 96px 24px 0; overflow: hidden;
    }
    .hub-hero::before {
      content: ''; position: absolute; inset: 0;
      background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(6,182,212,0.15) 0%, transparent 65%);
      pointer-events: none;
    }
    .hub-hero-inner {
      max-width: 900px; margin: 0 auto; text-align: center;
      position: relative; z-index: 2; padding-bottom: 32px;
    }
    .hub-badge {
      display: inline-flex; align-items: center; gap: 7px;
      background: rgba(6,182,212,0.1); border: 1px solid rgba(6,182,212,0.3);
      border-radius: 99px; padding: 5px 14px; font-size: 0.78rem;
      font-weight: 600; color: #06b6d4; margin-bottom: 1.1rem;
    }
    .hub-title { font-size: clamp(1.6rem, 4vw, 2.8rem); font-weight: 800; color: #f4f4f5; line-height: 1.1; margin: 0 0 0.9rem; }
    .hub-sub { color: #71717a; font-size: 1rem; margin: 0 0 2rem; }

    .hub-tabbar {
      display: flex; justify-content: center; gap: 0;
      border-bottom: 1px solid #27272a;
      position: sticky; top: 64px;
      background: rgba(8,8,12,0.95); backdrop-filter: blur(20px);
      z-index: 100; padding: 0 24px;
      overflow-x: auto; -webkit-overflow-scrolling: touch;
    }
    .hub-tabbar::-webkit-scrollbar { display: none; }
    .hub-tab {
      display: flex; align-items: center; gap: 7px;
      padding: 14px 22px; border: none; border-bottom: 2px solid transparent;
      background: transparent; color: #71717a; font-size: 0.85rem; font-weight: 600;
      font-family: 'Sora', sans-serif; cursor: pointer; white-space: nowrap;
      transition: all 0.18s; margin-bottom: -1px;
    }
    .hub-tab:hover { color: #e4e4e7; }
    .hub-tab.active { color: #06b6d4; border-bottom-color: #06b6d4; }
    .hub-tab .tab-icon { font-size: 1rem; }

    .hub-panel { display: none; }
    .hub-panel.active { display: block; animation: panelIn 0.2s ease; }
    @keyframes panelIn { from { opacity:0; transform:translateY(6px); } to { opacity:1; transform:translateY(0); } }

    .hub-iframe-wrap { width: 100%; height: calc(100vh - 130px); border: none; display: block; }

    @media (max-width: 768px) {
      .hub-hero { padding: 84px 16px 0; }
      .hub-tabbar { padding: 0 8px; top: 56px; }
      .hub-tab { padding: 12px 14px; font-size: 0.78rem; }
    }

    /* ── Light mode ────────────────────────────────────────────────────────── */
    .light-mode .hub-tabbar {
      background: rgba(255,255,255,0.95);
      border-bottom-color: rgba(0,0,0,.08);
    }
    .light-mode .hub-title  { color: #0f172a; }
    .light-mode .hub-sub    { color: #475569; }
    .light-mode .hub-tab    { color: #64748b; }
    .light-mode .hub-tab:hover { color: #0f172a; }