.bt-featured {
      --primary: #2c3e50;
      --text: #0f172a;
      --muted: #64748b;
      --card: #eef2f6;
      --white: #fff;

      color: var(--text);
      padding: 28px 0;
  }

  .bt-featured * {
      box-sizing: border-box
  }

  .bt-wrap {
      width: min(1400px, 100%);
      margin: 0 auto;
      padding: 0 16px;
  }

  /* Header */
  .bt-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 18px;
      width: 65%;
  }

  .bt-featured .bt-kicker {
      font-size: 27px;
      font-weight: 800;
      text-transform: uppercase;
      margin: 0 0 6px;
  }

  .bt-title {
      font-size: 40px;
      line-height: 1.05;
      font-weight: 900;
      margin: 0;
      color: var(--primary);
  }

  .bt-nav {
      display: flex;
      gap: 10px;
  }

  .bt-nav button {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      border: 0;
      background: linear-gradient(90deg, #2C3E50 0%, #4CA1AF 100%);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 0;
      padding: 0;
      line-height: 1;
      margin-right: 0;
  }

  .bt-nav svg {
      width: 20px;
      height: 20px;
      display: block;
  }

  .bt-nav button:hover {
      transform: translateY(-1px);
      filter: brightness(.95)
  }

  .bt-nav svg {
      width: 20px;
      height: 20px
  }

  /* Layout */
  .bt-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      align-items: stretch;
  }

  .bt-grid {
      position: relative;
  }

  /* Gallery */
  .bt-gallery {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      height: 600px;
  }

  .bt-card {
      position: relative;
      border-radius: 18px;
      overflow: hidden;
      background: #ddd;
      min-height: 250px;
  }

  .bt-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transform: scale(1);
      transition: transform .5s ease;
  }

  .bt-card:hover img {
      transform: scale(1.06)
  }

  .bt-overlay {
      position: absolute;
      inset: auto 0 0 0;
      padding: 18px 18px 16px;
      background: linear-gradient(to top, rgba(0, 0, 0, .88), rgba(0, 0, 0, .55), rgba(0, 0, 0, 0));
      opacity: 0;
      transform: translateY(6px);
      transition: opacity .25s ease, transform .25s ease;
  }

  .bt-card:hover .bt-overlay {
      opacity: 1;
      transform: translateY(0)
  }

  .bt-overlay .bt-line {
      border-left: 4px solid #fff;
      padding-left: 12px;
  }

  .bt-overlay h3 {
      margin: 0;
      color: #fff;
      font-size: 16px;
      font-weight: 800;
      line-height: 1.25;
  }

  /* Form panel */
  .bt-form {
      position: relative;
      border-radius: 34px;
      padding: 35px 20px;
      background: var(--card);
      overflow: hidden;
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, .65);
  }

  /* dotted background like screenshot */
  .bt-form::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: radial-gradient(rgba(15, 23, 42, .22) 1px, transparent 1px);
      background-size: 18px 18px;
      opacity: .18;
      pointer-events: none;
  }

  .bt-form-inner {
      position: relative;
      z-index: 1;
      height: 100%;
      display: flex;
      flex-direction: column;
  }

  .bt-form-head {
      text-align: center;
      margin-bottom: 14px;
  }

  .bt-form-head h3 {
      margin: 0 0 6px;
      font-size: 22px;
      font-weight: 900;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: .04em;
  }

  .bt-form-head p {
      margin: 0;
      font-size: 12px;
      font-weight: 800;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: .08em;
  }

  .bt-fields {
      display: flex;
      flex-direction: column;
      gap: 12px;
      flex: 1;
      margin-bottom: 0;
  }

  .bt-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
  }

  .bt-label {
      display: block;
      font-size: 13px;
      font-weight: 800;
      color: var(--primary);
      margin: 0 0 6px;
      padding-left: 4px;
  }

  .bt-input {
      border-radius: 6px !important;
  }

  .bt-input,
  .bt-textarea {
      width: 100%;
      border: 0;
      background: var(--white);
      border-radius: 10px;
      padding: 12px 12px;
      font-size: 14px;
      outline: none;
      box-shadow: 0 1px 0 rgba(2, 6, 23, .06);
  }

  .bt-textarea {
      resize: none;
      min-height: 120px;
      overflow: auto;
  }

  .bt-submit {
      margin-top: 16px;
  }

  .bt-submit button {
      width: 100%;
      border: 0;
      border-radius: 999px;
      padding: 14px 16px;
      background: linear-gradient(90deg, #2C3E50 0%, #4CA1AF 100%);
      color: #fff;
      font-size: 14px;
      font-weight: 900;
      cursor: pointer;
      box-shadow: 0 14px 26px rgba(30, 100, 180, .28);
      transition: transform .15s ease, filter .15s ease;
  }

  .bt-submit button:hover {
      transform: translateY(-1px);
      filter: brightness(.95)
  }

  .bt-featured .sc--title-home {
      margin-bottom: 0;
  }

  .mess__error .alert-err {
      color: #2c3e50;
  }

  .bt-nav {
      display: none
  }

  /* mặc định: PC dùng grid, ẩn swiper */
  .bt-gallery--swiper {
      display: none;
  }

  /* slide: 2 box dọc */
  .bt-featured-swiper__slide {
      display: flex;
      flex-direction: column;
      gap: 14px;
  }


  /* Responsive */
  @media (max-width: 1024px) {
      .bt-grid {
          grid-template-columns: 1fr
      }

      .bt-gallery {
          min-height: auto
      }
  }

  @media (max-width: 768px) {
      .bt-title {
          font-size: 32px
      }

      .bt-row {
          grid-template-columns: 1fr
      }

      .bt-nav {
          display: flex
      }


      .bt-head {
          width: 100%;
      }

      .bt-nav button {
          width: 36px;
          height: 36px;
      }

      .bt-nav svg {
          width: 16px;
          height: 16px;
      }

      .bt-featured .bt-kicker {
          font-size: 22px;
      }

      .bt-gallery {
          grid-template-columns: 1fr;
          height: auto;
      }

      .bt-gallery--grid {
          display: none;
      }

      .bt-gallery--swiper {
          display: block;
      }

      .bt-featured-swiper {
          width: 100%;
      }

      .bt-gallery {
          height: auto;
      }

      /* tránh dư khoảng trắng */

      .bt-card img {
          height: 300px;
      }


  }