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

    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
      background: #111111;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    .topbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 2.5rem;
      height: 60px;
      background: #000;
      border-bottom: 3px solid #CC1F1F;
      flex-shrink: 0;
    }

    .logo {
      font-size: 22px;
      font-weight: 700;
      color: #fff;
      letter-spacing: -0.5px;
      text-transform: uppercase;
      text-decoration: none;
    }

    .logo span {
      color: #CC1F1F;
    }

    .topbar-right {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      color: rgba(255, 255, 255, 0.4);
    }

    .topbar-right i {
      font-size: 14px;
    }

    .page {
      flex: 1;
      display: flex;
      align-items: flex-start;
      justify-content: center;
      padding: 3rem 2rem;
      gap: 24px;
    }

    .contact-info {
      width: 280px;
      flex-shrink: 0;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .info-card {
      background: #000;
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 8px;
      padding: 1.5rem;
    }

    .info-card .info-icon {
      width: 36px;
      height: 36px;
      border: 1px solid rgba(204, 31, 31, 0.4);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #CC1F1F;
      font-size: 17px;
      margin-bottom: 12px;
    }

    .info-card .info-label {
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: rgba(255, 255, 255, 0.4);
      margin-bottom: 6px;
    }

    .info-card .info-value {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      line-height: 1.5;
    }

    .info-card .info-detail {
      font-size: 12px;
      color: rgba(255, 255, 255, 0.35);
      margin-top: 4px;
      line-height: 1.5;
    }

    .card {
      width: 100%;
      max-width: 480px;
      background: #fff;
      border-radius: 8px;
      padding: 2.5rem 2.5rem 2rem;
    }

    .card-header {
      margin-bottom: 1.75rem;
    }

    .card-tag {
      display: inline-block;
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: #fff;
      background: #CC1F1F;
      padding: 3px 8px;
      border-radius: 3px;
      margin-bottom: 0.75rem;
    }

    .card-title {
      font-size: 24px;
      font-weight: 700;
      color: #111;
      margin-bottom: 6px;
      letter-spacing: -0.5px;
    }

    .card-sub {
      font-size: 13px;
      color: #777;
      line-height: 1.5;
    }

    .divider-line {
      height: 1px;
      background: #E8E8E8;
      margin: 1.5rem 0;
    }

    .form-row {
      display: flex;
      gap: 14px;
    }

    .form-row .form-group {
      flex: 1;
    }

    .form-group {
      margin-bottom: 14px;
    }

    .form-label {
      display: block;
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      color: #444;
      margin-bottom: 6px;
    }

    .input-wrap {
      position: relative;
    }

    .input-wrap i {
      position: absolute;
      left: 11px;
      top: 50%;
      transform: translateY(-50%);
      font-size: 16px;
      color: #AAA;
      pointer-events: none;
    }

    .form-input {
      width: 100%;
      padding: 10px 11px 10px 36px;
      font-size: 14px;
      border: 1.5px solid #E0E0E0;
      border-radius: 6px;
      background: #FAFAFA;
      color: #111;
      outline: none;
      transition: border-color 0.15s, background 0.15s;
    }

    .form-input.no-icon {
      padding-left: 11px;
    }

    .form-input:focus {
      border-color: #CC1F1F;
      background: #fff;
    }

    .form-input::placeholder {
      color: #C0C0C0;
    }

    .form-select {
      width: 100%;
      padding: 10px 11px;
      font-size: 14px;
      border: 1.5px solid #E0E0E0;
      border-radius: 6px;
      background: #FAFAFA;
      color: #111;
      outline: none;
      appearance: none;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 12px center;
      cursor: pointer;
      transition: border-color 0.15s, background 0.15s;
    }

    .form-select:focus {
      border-color: #CC1F1F;
      background: #fff;
    }

    .form-textarea {
      width: 100%;
      padding: 10px 11px;
      font-size: 14px;
      border: 1.5px solid #E0E0E0;
      border-radius: 6px;
      background: #FAFAFA;
      color: #111;
      outline: none;
      resize: vertical;
      min-height: 100px;
      font-family: inherit;
      transition: border-color 0.15s, background 0.15s;
    }

    .form-textarea:focus {
      border-color: #CC1F1F;
      background: #fff;
    }

    .form-textarea::placeholder {
      color: #C0C0C0;
    }

    .btn-primary {
      width: 100%;
      background: #CC1F1F;
      color: #fff;
      border: none;
      border-radius: 6px;
      padding: 13px;
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      cursor: pointer;
      transition: background 0.15s;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      margin-top: 20px;
    }

    .btn-primary:hover {
      background: #A81818;
    }

    .btn-primary i {
      font-size: 16px;
    }

    .btn-primary .spinner {
      display: none;
      width: 16px;
      height: 16px;
      border: 2px solid rgba(255, 255, 255, 0.3);
      border-top-color: #fff;
      border-radius: 50%;
      animation: spin 0.6s linear infinite;
    }

    .btn-primary.loading .spinner {
      display: block;
    }

    .btn-primary.loading .btn-text,
    .btn-primary.loading .btn-icon {
      display: none;
    }

    @keyframes spin {
      to {
        transform: rotate(360deg);
      }
    }

    .error-message {
      display: none;
      background: #FEF2F2;
      border: 1px solid #FECACA;
      border-radius: 6px;
      padding: 10px 14px;
      margin-bottom: 14px;
      font-size: 13px;
      color: #991B1B;
      align-items: center;
      gap: 8px;
    }

    .error-message.visible {
      display: flex;
    }

    .error-message i {
      font-size: 16px;
      flex-shrink: 0;
    }

    .success-message {
      display: none;
      background: #F0FDF4;
      border: 1px solid #BBF7D0;
      border-radius: 6px;
      padding: 10px 14px;
      margin-bottom: 14px;
      font-size: 13px;
      color: #166534;
      align-items: center;
      gap: 8px;
    }

    .success-message.visible {
      display: flex;
    }

    .success-message i {
      font-size: 16px;
      flex-shrink: 0;
    }

    .back-link {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-top: 1.5rem;
      font-size: 13px;
      color: #CC1F1F;
      text-decoration: none;
      justify-content: center;
    }

    .back-link:hover {
      text-decoration: underline;
    }

    .back-link i {
      font-size: 16px;
    }

    .bottombar {
      background: #000;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 12px 2.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-shrink: 0;
    }

    .bottombar-left {
      font-size: 11px;
      color: rgba(255, 255, 255, 0.3);
    }

    .bottombar-right {
      display: flex;
      gap: 20px;
    }

    .bottombar-right a {
      font-size: 11px;
      color: rgba(255, 255, 255, 0.3);
      text-decoration: none;
      cursor: pointer;
    }

    .bottombar-right a:hover {
      color: rgba(255, 255, 255, 0.6);
    }

    @media (max-width: 768px) {
      .page {
        flex-direction: column;
        align-items: center;
      }

      .contact-info {
        width: 100%;
        max-width: 480px;
        flex-direction: row;
        flex-wrap: wrap;
      }

      .info-card {
        flex: 1;
        min-width: 200px;
      }
    }

    @media (max-width: 480px) {
      .topbar {
        padding: 0 1.25rem;
      }

      .page {
        padding: 1.5rem 1.25rem;
      }

      .card {
        padding: 2rem 1.5rem 1.5rem;
      }

      .form-row {
        flex-direction: column;
        gap: 0;
      }

      .contact-info {
        flex-direction: column;
      }

      .info-card {
        min-width: unset;
      }

      .bottombar {
        padding: 12px 1.25rem;
        flex-direction: column;
        gap: 8px;
        text-align: center;
      }
    }

    .nav-icon-btn,
    .theme-btn {
      border: none;
      background: transparent;
      color: inherit;
      cursor: pointer;
      padding: 0.45rem;
      border-radius: 999px;
      transition: background 0.2s, color 0.2s, opacity 0.2s;
    }

    .nav-icon-btn:hover,
    .theme-btn:hover {
      opacity: 0.8;
      background: rgba(255, 255, 255, 0.08);
    }

    body.light {
      background: #F5F7FA;
      color: #111;
    }

    body.light .topbar,
    body.light .topnav {
      background: #fff;
      border-color: #E5E7EB;
      color: #111;
    }

    body.light .topbar-right,
    body.light .topnav-right {
      color: rgba(0, 0, 0, 0.65);
    }

    body.light .logo {
      color: #111;
    }

    body.light .logo span {
      color: #CC1F1F;
    }

    body.light a,
    body.light .nav-link {
      color: #111;
    }

    body.light .info-card {
      background: #fff;
      border-color: #E8E8E8;
    }

    body.light .info-card .info-label {
      color: rgba(0, 0, 0, 0.45);
    }

    body.light .info-card .info-value {
      color: #111;
    }

    body.light .info-card .info-detail {
      color: rgba(0, 0, 0, 0.45);
    }

    body.light .bottombar {
      background: #fff;
      border-top-color: #E8E8E8;
    }

    body.light .bottombar-left {
      color: rgba(0, 0, 0, 0.4);
    }

    body.light .bottombar-right a {
      color: rgba(0, 0, 0, 0.4);
    }

    body.light .bottombar-right a:hover {
      color: #111;
    }

    body.light .nav-icon-btn,
    body.light .theme-btn {
      color: rgba(0, 0, 0, 0.4);
    }

    body.light .nav-icon-btn:hover,
    body.light .theme-btn:hover {
      color: #111;
      background: rgba(0, 0, 0, 0.04);
    }
    /* Honeypot — invisible to real users, filled by naive spam bots. */
    .hp-field { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }