/* ERCOT page — hero image + TDU regions section only.
         All other sections inherit from industries.css (loaded first). */

      body.page-ercot .hero { background-color: var(--color-midnight); background-image: url('../../hero-ercot-desktop.jpg'); background-image: url('../../hero-ercot-desktop.webp'); }

      /* "Why Texas Has Its Own Grid" — text variant of why-choose-section */
      .own-grid-copy {
        max-width: 860px;
        margin: 0 auto;
        text-align: left;
      }

      /* TDU Regions */
      .tdu-regions {
        padding: 5rem 4rem;
        background: var(--color-white);
        position: relative;
        z-index: 1;
        border-top: 1px solid rgba(40, 120, 192, 0.08);
      }

      .tdu-regions-container {
        max-width: 1100px;
        margin: 0 auto;
      }

      .tdu-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
      }

      .tdu-card {
        background: var(--color-white);
        border-radius: 16px;
        padding: 1.75rem 1.5rem;
        box-shadow: 0 4px 20px rgba(13, 27, 42, 0.05);
        border: 1px solid rgba(40, 120, 192, 0.07);
        transition: transform 0.25s ease, box-shadow 0.25s ease;
      }

      .tdu-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 10px 32px rgba(13, 27, 42, 0.1);
      }

      .tdu-card h3 {
        font-size: 1.15rem;
        font-weight: 700;
        color: var(--color-midnight);
        margin-bottom: 0.35rem;
      }

      .tdu-territory {
        font-size: 0.95rem;
        color: var(--color-slate);
        line-height: 1.6;
        margin-bottom: 1rem;
      }

      .tdu-pill {
        display: inline-block;
        background: rgba(232, 119, 34, 0.1);
        color: var(--color-accent);
        font-size: 0.78rem;
        font-weight: 700;
        padding: 0.25rem 0.65rem;
        border-radius: 999px;
        margin-bottom: 0.75rem;
      }

      .tdu-cities {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
      }

      .tdu-chip {
        background: #f5f5f7;
        border-radius: 10px;
        padding: 0.45rem 0.75rem;
        font-size: 0.85rem;
        font-weight: 600;
        color: var(--color-midnight);
        text-decoration: none;
      }

      a.tdu-chip {
        transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
      }

      a.tdu-chip:hover {
        background: rgba(232, 119, 34, 0.1);
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(232, 119, 34, 0.12);
      }

      span.tdu-chip {
        cursor: default;
      }

      .tdu-footnote {
        font-size: 0.9rem;
        color: var(--color-slate);
        line-height: 1.7;
        margin-top: 1.75rem;
      }

      .tdu-callout {
        margin-top: 1.5rem;
        border: 1px solid rgba(40, 120, 192, 0.12);
        border-radius: 14px;
        padding: 1.5rem 1.75rem;
      }

      /* Full community list — native <details>, summary styled like .faq-question */
      .tdu-full-list {
        margin-top: 2rem;
        border-top: 1px solid rgba(40, 120, 192, 0.12);
      }

      .tdu-full-list summary {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 1rem;
        padding: 1.5rem 0;
        cursor: pointer;
        font-size: 1.05rem;
        font-weight: 600;
        color: var(--color-midnight);
        list-style: none;
        transition: color 0.3s ease;
      }

      .tdu-full-list summary::-webkit-details-marker {
        display: none;
      }

      .tdu-full-list summary:hover {
        color: var(--color-primary);
      }

      .tdu-full-list summary svg {
        width: 20px;
        height: 20px;
        min-width: 20px;
        stroke: var(--color-primary);
        fill: none;
        stroke-width: 2;
        transition: transform 0.3s ease;
      }

      .tdu-full-list[open] summary svg {
        transform: rotate(180deg);
      }

      .tdu-group {
        margin-bottom: 1.25rem;
      }

      .tdu-group h4 {
        font-size: 0.95rem;
        font-weight: 700;
        color: var(--color-midnight);
        margin-bottom: 0.35rem;
      }

      .tdu-group p {
        font-size: 0.9rem;
        color: var(--color-slate);
        line-height: 1.8;
      }

      /* Responsive */
      @media (max-width: 1024px) {
        .tdu-regions { padding: 3.5rem 2rem; }
        .tdu-grid { grid-template-columns: 1fr 1fr; }
      }

      @media (max-width: 768px) {
        .tdu-regions { padding: 3rem 1.5rem; }
        .tdu-grid { grid-template-columns: 1fr; }
      }

      @media (max-width: 600px) {
        body.page-ercot .stats-strip-grid {
          grid-template-columns: 1fr;
        }

        body.page-ercot .stats-strip .intro-stat-card:not(:last-child) {
          border-right: none;
          border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }
      }