/* ── Hero ── */
    .sol-hub-hero {
      padding: 8rem 0 4rem;
      text-align: center;
    }
    .sol-hub-hero h1 {
      font-size: clamp(2.5rem, 5vw, 4rem);
      font-weight: 300;
      letter-spacing: -0.03em;
      line-height: 1.08;
      margin-bottom: 1.25rem;
    }
    .sol-hub-hero p {
      font-size: 1.125rem;
      font-weight: 300;
      color: var(--grey);
      max-width: 34rem;
      margin: 0 auto;
      line-height: 1.65;
    }

    /* ── Tab bar ── */
    .tab-bar {
      position: sticky;
      top: 4rem;
      z-index: 90;
      background: rgba(31,31,31,0.97);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
    }
    .tab-bar-inner {
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 0 var(--pad);
      display: flex;
      gap: 0;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }
    .tab-btn {
      flex-shrink: 0;
      padding: 1rem 1.5rem;
      font-size: 0.875rem;
      font-weight: 500;
      color: var(--grey);
      background: none;
      border: none;
      border-bottom: 2px solid transparent;
      cursor: pointer;
      transition: color 0.15s, border-color 0.15s;
      font-family: var(--f);
      white-space: nowrap;
    }
    .tab-btn:hover { color: var(--white); }
    .tab-btn.active {
      color: var(--salmon);
      border-bottom-color: var(--salmon);
      font-weight: 500;
    }

    /* ── Tab panels ── */
    .tab-panel {
      display: none;
      animation: fadeIn 0.3s ease;
    }
    .tab-panel.active { display: block; }

    /* ── Solution card layout ── */
    .sol-card-hero {
      padding: 4rem 0 3rem;
      border-bottom: 1px solid var(--border);
    }
    .sol-card-hero h2 {
      font-size: clamp(2rem, 4vw, 3rem);
      font-weight: 300;
      letter-spacing: -0.02em;
      line-height: 1.1;
      white-space: pre-line;
      margin-bottom: 1rem;
    }
    .sol-card-sub {
      font-size: 1.0625rem;
      font-weight: 300;
      color: var(--grey);
      max-width: 36rem;
      line-height: 1.7;
      margin-bottom: 2rem;
    }
    .sol-card-btns { display: flex; gap: 0.75rem; flex-wrap: wrap; }

    /* Stats row */
    .sol-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1px;
      background: var(--border);
      border-bottom: 1px solid var(--border);
    }
    .sol-stat {
      background: var(--dark-2);
      padding: 2rem 1.5rem;
      text-align: center;
    }
    .sol-stat-v {
      font-size: 2.25rem;
      font-weight: 600;
      background: var(--salmon-grad);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      line-height: 1;
      margin-bottom: 0.5rem;
    }
    .sol-stat-l {
      font-size: 0.75rem;
      color: var(--charcoal);
      font-family: var(--f-mono);
      line-height: 1.5;
    }

    /* Feature cards */
    .sol-features {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1rem;
    }
    .sol-feat {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--r-card);
      padding: 1.75rem 1.5rem;
      transition: border-color 0.2s, transform 0.2s;
    }
    .sol-feat:hover { border-color: var(--border-2); transform: translateY(-2px); }
    .sol-feat-icon { margin-bottom: 0.75rem; width: 28px; height: 28px; color: var(--grey); }
    .sol-feat-icon svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
    .sol-feat-t { font-size: 0.9375rem; font-weight: 500; color: var(--white); margin-bottom: 0.5rem; }
    .sol-feat-b { font-size: 0.8125rem; font-weight: 300; color: var(--charcoal); line-height: 1.65; }

    /* Deep link */
    .sol-deep {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--salmon);
      margin-top: 2rem;
      transition: gap 0.2s;
    }
    .sol-deep:hover { gap: 0.75rem; }

    /* ── Bottom CTA ── */
    .hub-cta {
      text-align: center;
    }
    .hub-cta h2 {
      font-size: clamp(2rem, 4vw, 2.75rem);
      font-weight: 300;
      letter-spacing: -0.015em;
      line-height: 1.1;
      margin-bottom: 1.25rem;
    }
    .hub-cta p {
      font-size: 1.125rem;
      font-weight: 300;
      color: var(--grey);
      max-width: 28rem;
      margin: 0 auto 2rem;
      line-height: 1.6;
    }

    @media (max-width: 767px) {
      .sol-stats { grid-template-columns: 1fr; }
      .sol-features { grid-template-columns: 1fr; }
      .tab-btn { padding: 0.875rem 1rem; font-size: 0.8125rem; }
    }