*, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    :root {
      --bg: #f8fafc;
      --bg-card: #ffffff;
      --text: #0f172a;
      --text-muted: #64748b;
      --text-light: #94a3b8;
      --primary: #eab308;
      --primary-hover: #ca8a04;
      --primary-light: #fef9c3;
      --primary-border: #fde047;
      --accent-blue: #2563eb;
      --border: #e2e8f0;
      --border-subtle: #f1f5f9;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
      --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.08);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --success: #16a34a;
      --danger: #dc2626;
    }

    body.dark-theme {
      --bg: #0b0f19;
      --bg-card: #131b2e;
      --text: #f8fafc;
      --text-muted: #94a3b8;
      --text-light: #64748b;
      --border: #1e293b;
      --border-subtle: #172033;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
      --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
      --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    }

    html, body {
      overflow-x: hidden;
      max-width: 100%;
    }

    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.6;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      transition: background-color 0.25s ease, color 0.25s ease;
    }

    /* ── STICKY SITE HEADER ── */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: var(--bg-card);
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      backdrop-filter: blur(12px);
    }

    .header-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 12px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

    .header-brand {
      display: flex;
      align-items: center;
      text-decoration: none;
    }

    .brand-logo-img {
      height: 42px;
      width: auto;
      max-width: 190px;
      object-fit: contain;
    }

    .header-nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn-nav-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 14px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text);
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      text-decoration: none;
      transition: all 0.2s ease;
      cursor: pointer;
    }

    .btn-nav-link:hover {
      border-color: var(--primary);
      background: var(--primary-light);
      color: #854d0e;
    }

    body.dark-theme .btn-nav-link:hover {
      background: rgba(234, 179, 8, 0.15);
      color: #fef08a;
    }

    .btn-theme-toggle {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      border: 1px solid var(--border);
      background: var(--bg);
      color: var(--text);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .btn-theme-toggle:hover {
      border-color: var(--primary);
      background: var(--primary-light);
    }

    /* ── HERO BANNER ── */
    .hero-section {
      background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg) 100%);
      border-bottom: 1px solid var(--border);
      padding: 36px 20px 42px;
    }

    .hero-container {
      max-width: 1080px;
      margin: 0 auto;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 16px;
    }

    .breadcrumb a {
      color: inherit;
      text-decoration: none;
      transition: color 0.15s;
    }

    .breadcrumb a:hover {
      color: var(--primary-hover);
      text-decoration: underline;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      color: #854d0e;
      background: #fef08a;
      padding: 4px 12px;
      border-radius: 999px;
      margin-bottom: 12px;
    }

    body.dark-theme .hero-badge {
      color: #fef08a;
      background: rgba(234, 179, 8, 0.2);
    }

    .hero-title {
      font-family: 'Poppins', sans-serif;
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text);
      letter-spacing: -0.02em;
      margin-bottom: 10px;
    }

    .hero-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 680px;
      line-height: 1.5;
    }

    /* ── MAIN CONTENT & GRID ── */
    .main-container {
      max-width: 1080px;
      margin: -24px auto 60px;
      padding: 0 20px;
      width: 100%;
      flex: 1;
    }

    .support-grid {
      display: grid;
      grid-template-columns: 1fr 340px;
      gap: 28px;
      align-items: start;
    }

    @media (max-width: 860px) {
      .support-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 1.8rem;
      }
    }

    /* ── FORM CARD ── */
    .support-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-xl);
      position: relative;
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    @media (max-width: 600px) {
      .header-inner {
        padding: 10px 12px;
        gap: 8px;
      }
      .brand-logo-img {
        height: 32px;
        max-width: 120px;
      }
      .header-nav-actions {
        gap: 6px;
      }
      .btn-nav-link {
        padding: 6px 9px;
        font-size: 0.78rem;
      }
      .btn-nav-link span {
        display: none;
      }
      .btn-theme-toggle {
        width: 32px;
        height: 32px;
      }
      .hero-container {
        padding: 0 14px;
      }
      .support-container {
        padding: 0 14px 48px;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .support-card {
        padding: 22px 14px;
      }
    }

    label {
      display: block;
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 6px;
    }

    .required-mark {
      color: var(--danger);
      margin-left: 2px;
    }

    .field-hint {
      font-size: 0.78rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    input[type="text"],
    input[type="email"],
    input[type="tel"],
    select,
    textarea {
      width: 100%;
      padding: 12px 14px;
      font-family: inherit;
      font-size: 0.95rem;
      color: var(--text);
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      outline: none;
      transition: all 0.2s ease;
    }

    input:focus,
    select:focus,
    textarea:focus {
      border-color: var(--accent-blue);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
      background: var(--bg-card);
    }

    textarea {
      resize: vertical;
      min-height: 140px;
      line-height: 1.5;
    }

    .auth-prefill-badge {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--success);
      background: rgba(22, 163, 74, 0.1);
      padding: 3px 8px;
      border-radius: 6px;
      margin-bottom: 16px;
    }

    .btn-submit {
      width: 100%;
      padding: 14px 24px;
      font-family: 'Inter', sans-serif;
      font-size: 1rem;
      font-weight: 700;
      color: #0f172a;
      background: var(--primary);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      transition: all 0.2s ease;
      box-shadow: 0 4px 12px rgba(234, 179, 8, 0.3);
    }

    .btn-submit:hover:not(:disabled) {
      background: var(--primary-hover);
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(234, 179, 8, 0.4);
    }

    .btn-submit:disabled {
      opacity: 0.65;
      cursor: not-allowed;
      transform: none;
    }

    /* ── ALERT MESSAGES ── */
    .alert {
      padding: 14px 16px;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      display: flex;
      align-items: flex-start;
      gap: 10px;
      margin-bottom: 20px;
    }

    .alert-error {
      background: rgba(239, 68, 68, 0.12);
      border: 1px solid rgba(239, 68, 68, 0.3);
      color: var(--danger);
    }

    /* ── SUCCESS STATE CARD ── */
    .success-card {
      text-align: center;
      padding: 40px 24px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-xl);
      animation: fadeIn 0.3s ease-out;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(8px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .success-icon-wrap {
      width: 72px;
      height: 72px;
      border-radius: 50%;
      background: rgba(22, 163, 74, 0.15);
      color: var(--success);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
    }

    .success-title {
      font-family: 'Poppins', sans-serif;
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 8px;
    }

    .ticket-badge-box {
      background: var(--bg);
      border: 2px dashed var(--primary);
      border-radius: var(--radius-md);
      padding: 16px;
      max-width: 360px;
      margin: 20px auto;
    }

    .ticket-label {
      font-size: 0.78rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--text-muted);
      margin-bottom: 4px;
    }

    .ticket-number-display {
      font-family: monospace;
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--accent-blue);
      letter-spacing: 0.08em;
    }

    .success-note {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 28px;
    }

    .success-actions {
      display: flex;
      justify-content: center;
      gap: 12px;
      flex-wrap: wrap;
    }

    /* ── SIDEBAR INFO CARDS ── */
    .sidebar-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-bottom: 20px;
      box-shadow: var(--shadow-sm);
    }

    .sidebar-title {
      font-size: 1rem;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .info-list {
      list-style: none;
    }

    .info-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.86rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .info-list li i {
      color: var(--accent-blue);
      flex-shrink: 0;
      margin-top: 2px;
    }

    /* ── SITE FOOTER ── */
    .site-footer {
      background: var(--bg-card);
      border-top: 1px solid var(--border);
      padding: 30px 20px 24px;
      margin-top: auto;
      text-align: center;
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .footer-links {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-bottom: 12px;
      flex-wrap: wrap;
    }

    .footer-links a {
      color: inherit;
      text-decoration: none;
      transition: color 0.15s;
    }

    .footer-links a:hover {
      color: var(--primary-hover);
      text-decoration: underline;
    }

.sup-crumb-current { color: var(--text); font-weight: 600; }
.sup-order-optional { font-weight: 400; color: var(--text-muted); }
.sup-field-hint-row { display: flex; justify-content: space-between; }
.sup-success-sub { color: var(--text-muted); font-size: 0.95rem; margin-top: 4px; }
.sup-reset-btn { background: var(--bg); border: 1px solid var(--border); }
.sup-home-btn { width: auto; padding: 10px 20px; font-size: 0.9rem; }
.sup-footer-link { font-weight: 700; color: var(--text); }
.sup-footer-sub { font-size: 0.8rem; color: var(--text-light); }
.sup-alert-icon { width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; }
.sup-icon-primary { color: var(--primary); }
.sup-icon-accent { color: var(--accent-blue); }