.registration-hero {
    background:
      radial-gradient(circle at var(--mx, 72%) var(--my, 22%), rgba(209, 170, 115, 0.18), transparent 24%),
      radial-gradient(circle at 18% 18%, rgba(47, 143, 138, 0.14), transparent 32%),
      linear-gradient(135deg, #fdfaf4, #f5efe3 56%, #ecdfca);
    overflow: hidden;
    padding: 156px 0 72px;
    position: relative;
  }

  .registration-hero::before {
    background-image:
      linear-gradient(rgba(214, 168, 79, 0.08) 1px, transparent 1px),
      linear-gradient(90deg, rgba(47, 158, 158, 0.06) 1px, transparent 1px);
    background-size: 38px 38px;
    content: "";
    inset: 0;
    mask-image: linear-gradient(180deg, black, transparent 88%);
    pointer-events: none;
    position: absolute;
  }

  .registration-hero-grid {
    align-items: center;
    display: grid;
    gap: clamp(28px, 5vw, 72px);
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.72fr);
    position: relative;
    z-index: 1;
  }

  .registration-copy h1 {
    color: var(--midnight);
    font-family: "Noto Sans TC", Inter, system-ui, sans-serif;
    font-size: clamp(2.15rem, 4.8vw, 4rem);
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1.14;
    margin: 0;
    max-width: 900px;
  }

  .registration-copy p {
    color: rgba(22, 53, 45, 0.8);
    font-size: clamp(1.02rem, 1.7vw, 1.22rem);
    line-height: 1.9;
    margin: 24px 0 0;
    max-width: 760px;
  }

  .registration-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 24px;
  }

  .registration-hero-card {
    position: relative;
  }

  .registration-hero-card-inner {
    background:
      linear-gradient(145deg, rgba(22, 53, 45, 0.94), rgba(33, 68, 58, 0.9)),
      radial-gradient(circle at top right, rgba(209, 170, 115, 0.22), transparent 32%);
    border: 1px solid rgba(209, 170, 115, 0.24);
    border-radius: 8px;
    box-shadow: 0 28px 80px rgba(22, 53, 45, 0.24);
    color: var(--white);
    overflow: hidden;
    padding: 30px;
    position: relative;
  }

  .registration-hero-card-inner::after {
    background: linear-gradient(135deg, rgba(124, 110, 230, 0.18), transparent 42%);
    content: "";
    inset: 0;
    pointer-events: none;
    position: absolute;
  }

  .card-kicker {
    color: var(--gold);
    display: block;
    font-size: 2.76rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
  }

  .registration-hero-card ol {
    counter-reset: none;
    display: grid;
    gap: 16px;
    margin: 0;
    padding-left: 0;
    position: relative;
    z-index: 1;
    list-style: none;
  }

  .registration-hero-card li {
    align-items: flex-start;
    color: rgba(249, 250, 251, 0.94);
    display: grid;
    gap: 12px;
    grid-template-columns: auto 1fr;
    line-height: 1.8;
  }

  .registration-hero-card li strong {
    color: var(--gold);
    font-size: 1.32rem;
    line-height: 1.2;
    min-width: 1.8em;
  }

  .registration-hero-note {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: rgba(249, 250, 251, 0.92);
    line-height: 1.8;
    margin-top: 22px;
    padding: 18px;
    position: relative;
    z-index: 1;
  }

  .registration-overview {
    background: linear-gradient(180deg, #f9f4ea, #f4eee2 58%, #f8f4ed);
  }

  .registration-overview-grid {
    align-items: start;
    display: grid;
    gap: clamp(24px, 4vw, 40px);
    grid-template-columns: minmax(280px, 0.36fr) minmax(0, 1fr);
  }

  .registration-sidebar {
    display: grid;
    gap: 18px;
    position: sticky;
    top: 118px;
  }

  .sidebar-card {
    padding: 24px 22px;
  }

  .sidebar-card h2 {
    color: var(--midnight);
    font-family: "Noto Sans TC", Inter, system-ui, sans-serif;
    font-size: 1.22rem;
    margin: 0 0 14px;
  }

  .sidebar-card ul {
    color: var(--slate);
    display: grid;
    gap: 10px;
    line-height: 1.85;
    margin: 0;
    padding-left: 1.25em;
  }

  .sidebar-card .bullet-list {
    list-style: disc;
    padding-left: 1.4em;
  }

  .sidebar-support p {
    color: var(--slate);
    margin: 0 0 18px;
  }

  .sidebar-support .btn {
    margin-bottom: 12px;
  }

  .registration-form-shell :global(.section-header) {
    margin-bottom: 22px;
  }

  .form-frame {
    overflow: hidden;
  }

  .form-frame-top {
    align-items: center;
    background: linear-gradient(180deg, rgba(22, 53, 45, 0.98), rgba(33, 68, 58, 0.96));
    display: flex;
    gap: 18px;
    justify-content: space-between;
    padding: 18px 22px;
  }

  .form-frame-heading {
    display: grid;
    gap: 4px;
  }

  .form-frame-heading strong {
    color: var(--ivory);
    font-size: 2.04rem;
    font-weight: 800;
    line-height: 1.1;
  }

  .form-frame-heading span {
    color: rgba(249, 250, 251, 0.72);
    font-size: 0.92rem;
  }

  .registration-form {
    background: rgba(255, 255, 255, 0.96);
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: clamp(24px, 4vw, 42px);
  }

  .registration-form label {
    color: var(--midnight);
    display: grid;
    font-weight: 700;
    gap: 8px;
  }

  .registration-form input,
  .registration-form select,
  .registration-form textarea {
    background: #fff;
    border: 1px solid rgba(22, 53, 45, 0.2);
    border-radius: 6px;
    color: var(--ink);
    min-height: 50px;
    padding: 11px 13px;
    width: 100%;
  }

  .registration-form textarea {
    min-height: 130px;
    resize: vertical;
  }

  .registration-form input:focus,
  .registration-form select:focus,
  .registration-form textarea:focus {
    border-color: var(--teal);
    box-shadow: 0 0 0 3px rgba(47, 143, 138, 0.14);
    outline: none;
  }

  .registration-form .form-wide {
    grid-column: 1 / -1;
  }

  .registration-form .form-success,
  .registration-form .form-error {
    margin: 0;
    padding: 14px 16px;
  }

  .registration-form .form-success {
    background: rgba(59, 143, 20, 0.1);
    color: #2f7610;
  }

  .registration-form .form-error {
    background: rgba(180, 35, 24, 0.08);
    color: #912018;
  }

  @media (max-width: 1080px) {
    .registration-overview-grid {
      grid-template-columns: 1fr;
    }

    .registration-sidebar {
      position: static;
    }
  }

  @media (max-width: 880px) {
    .registration-hero-grid {
      grid-template-columns: 1fr;
    }
  }

  @media (max-width: 720px) {
    .registration-hero {
      padding-top: 132px;
    }

    .registration-form {
      grid-template-columns: 1fr;
    }

    .registration-form .form-wide {
      grid-column: auto;
    }
  }