:root {
	  --primary-silver: #C0C0C0;
	  --dark-silver: #8A8A8A;
	  --light-silver: #E8E8E8;
	  --accent-green: #4ADE80;
	  --accent-green-light: #86EFAC;
	  --dark-bg: #0F0F0F;
	  --card-bg: #ffffff;
	  --card-border: #ececec;
	  --text-primary: #4ADE80;
	  --text-secondary: #A0A0A0;
	  --error-red: #EF4444;
	  --success-green: #22C55E;
  }
  
  .step-indicator {
	  display: flex;
	  justify-content: center;
	  gap: 20px;
	  margin-bottom: 40px;
	  flex-wrap: wrap;
  }
  
  .step {
	  display: flex;
	  align-items: center;
	  gap: 10px;
	  padding: 12px 24px;
	  background: var(--card-bg);
	  border: 3px solid var(--accent-green);
	  border-radius: 50px;
	  font-size: 0.9rem;
	  color: var(--accent-green);
	  transition: all 0.3s ease;
  }
  
  .step-text {
	font-weight: 700;
  }
  
  .step.active {
	  border-color: var(--accent-green);
	  color: #fff;
	  box-shadow: 0 0 20px rgba(74, 222, 128, 0.2);
	  background-color: var(--accent-green);
  }
  
  .step.completed {
	  border-color: var(--success-green);
	  background: var(--success-green);
	  color: #fff;
  }
  
  .step-number {
	  width: 28px;
	  height: 28px;
	  border-radius: 50%;
	  background: var(--accent-green);
	  display: flex;
	  align-items: center;
	  justify-content: center;
	  font-weight: 600;
	  font-size: 0.85rem;
	  color: #fff;
  }
  
  .step.active .step-number {
	  background: #fff;
	  color: var(--accent-green)
  }
  
  .step.completed .step-number {
	  background: #fff;
	  color: var(--success-green);
  }
  
  .section {
	  display: none;
	  animation: fadeIn 0.5s ease;
  }
  
  .section.active {
	  display: block;
  }
  
  @keyframes fadeIn {
	  from { opacity: 0; transform: translateY(20px); }
	  to { opacity: 1; transform: translateY(0); }
  }
  
  .plans-grid {
	  display: grid;
	  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	  gap: 30px;
	  margin-bottom: 30px;
  }
  
  .plan-card {
	  background: linear-gradient(145deg, var(--card-bg), #f6f6f6);
	  border: 15px solid var(--card-border);
	  border-radius: 20px;
	  padding: 40px 30px;
	  cursor: pointer;
	  transition: all 0.4s ease;
	  position: relative;
	  overflow: hidden;
  }
  
  .plan-card::before {
	  content: '';
	  position: absolute;
	  top: 0;
	  left: 0;
	  right: 0;
	  height: 4px;
	  background: linear-gradient(90deg, var(--primary-silver), var(--accent-green));
	  opacity: 0;
	  transition: opacity 0.3s ease;
  }
  
  .plan-card:hover {
	  transform: translateY(-5px);
	  border-color: rgba(74, 222, 128, 0.5);
  }
  
  .plan-card.selected {
	  border-color: var(--accent-green);
	  box-shadow: 0 0 40px rgba(74, 222, 128, 0.3);
  }
  
  .plan-card.selected::before {
	  opacity: 1;
  }
  
  .plan-badge {
	  position: absolute;
	  top: 20px;
	  right: 20px;
	  background: linear-gradient(135deg, var(--accent-green), var(--accent-green-light));
	  color: var(--dark-bg);
	  padding: 6px 14px;
	  border-radius: 20px;
	  font-size: 0.75rem;
	  font-weight: 700;
	  text-transform: uppercase;
  }
  
  .plan-icon {
	  width: 60px;
	  height: 60px;
	  background: linear-gradient(135deg, var(--card-border), var(--card-bg));
	  border-radius: 16px;
	  display: flex;
	  align-items: center;
	  justify-content: center;
	  margin-bottom: 20px;
	  font-size: 1.8rem;
  }
  
  .plan-title {
	  font-size: 1.5rem;
	  font-weight: 700;
	  margin-bottom: 10px;
	  color: var(--light-silver);
  }
  
  .plan-price {
	  font-size: 3rem;
	  font-weight: 800;
	  margin-bottom: 5px;
	  background: linear-gradient(135deg, var(--text-primary), var(--primary-silver));
	  -webkit-background-clip: text;
	  -webkit-text-fill-color: transparent;
	  background-clip: text;
  }
  
  .plan-price span {
	  font-size: 1.2rem;
	  font-weight: 400;
  }
  
  .plan-period {
	  color: var(--text-secondary);
	  font-size: 0.95rem;
	  margin-bottom: 25px;
  }
  
  .plan-features {
	  list-style: none;
  }
  
  .plan-features li {
	  padding: 10px 0;
	  color: var(--text-secondary);
	  display: flex;
	  align-items: center;
	  gap: 12px;
	  font-size: 0.95rem;
  }
  
  .plan-features li::before {
	  content: '✓';
	  color: var(--accent-green);
	  font-weight: bold;
  }
  
  .crypto-grid {
	  display: grid;
	  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
	  gap: 15px;
	  margin-bottom: 30px;
  }
  
  .crypto-card {
	  background: var(--card-bg);
	  border: 2px solid var(--card-border);
	  border-radius: 16px;
	  padding: 25px 20px;
	  cursor: pointer;
	  transition: all 0.3s ease;
	  text-align: center;
  }
  
  .crypto-card:hover {
	  transform: translateY(-3px);
	  border-color: var(--accent-green);
	  background: rgba(74, 222, 128, 0.05);
	  box-shadow: 0 0 30px rgba(74, 222, 128, 0.2);
  }
  
  .crypto-card.selected {
	  border-color: var(--accent-green);
	  background: rgba(74, 222, 128, 0.05);
	  box-shadow: 0 0 30px rgba(74, 222, 128, 0.2);
  }
  
  .crypto-icon {
	  width: 50px;
	  height: 50px;
	  margin: 0 auto 15px;
	  border-radius: 50%;
	  display: flex;
	  align-items: center;
	  justify-content: center;
	  font-size: 1.5rem;
	  font-weight: bold;
  }
  
  .crypto-icon.trx { background: linear-gradient(135deg, #FF0013, #FF6B6B); }
  .crypto-icon.btc { background: linear-gradient(135deg, #F7931A, #FFB84D); }
  .crypto-icon.eth { background: linear-gradient(135deg, #627EEA, #8B9FEF); }
  .crypto-icon.usdt { background: linear-gradient(135deg, #26A17B, #4ECFA8); }
  
  .crypto-name {
	  font-weight: 600;
	  font-size: 1rem;
	  margin-bottom: 5px;
  }
  
  .crypto-network {
	  font-size: 0.8rem;
	  color: var(--text-secondary);
  }
  
  .payment-details {
	  background: var(--card-bg);
	  border: 1px solid var(--card-border);
	  border-radius: 20px;
	  padding: 40px;
	  margin-bottom: 30px;
  }
  
  .amount-display {
	  text-align: center;
	  margin-bottom: 30px;
	  padding-bottom: 30px;
	  border-bottom: 1px solid var(--card-border);
  }
  
  .amount-label {
	  color: var(--text-secondary);
	  font-size: 0.9rem;
	  margin-bottom: 10px;
  }
  
  .amount-value {
	  font-size: 2.5rem;
	  font-weight: 700;
	  color: var(--accent-green);
  }
  
  .amount-usd {
	  color: var(--text-secondary);
	  font-size: 1rem;
	  margin-top: 5px;
  }
  
  .qr-section {
	  display: flex;
	  flex-direction: column;
	  align-items: center;
	  gap: 25px;
	  margin-bottom: 30px;
  }
  
  .qr-code {
	  background: white;
	  padding: 20px;
	  border-radius: 16px;
	  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  }
  
  .qr-code img {
	  width: 200px;
	  height: 200px;
	  display: block;
  }
  
  .wallet-address {
	  width: 100%;
  }
  
  
  .wallet-label {
	  color: var(--text-secondary);
	  font-size: 0.85rem;
	  margin-bottom: 10px;
	  text-align: center;
  }
  
  .wallet-input-group {
	  display: flex;
	  gap: 10px;
  }
  
  .wallet-input {
	  flex: 1;
	  background: #fff;
	  border: 1px solid var(--card-border);
	  border-radius: 12px;
	  padding: 15px 20px;
	  color: #000);
	  font-family: 'Courier New', monospace;
	  font-size: 1.3rem;
	  outline: none;
  }
  
  .btn-group > button.btn-secondary:hover {
	background-color: var(--success-green);
  }
  
  .copy-btn {
	  background: linear-gradient(135deg, var(--accent-green), var(--accent-green-light));
	  border: none;
	  border-radius: 12px;
	  padding: 15px 25px;
	  color: var(--dark-bg);
	  font-weight: 600;
	  cursor: pointer;
	  transition: all 0.3s ease;
	  white-space: nowrap;
  }
  
  .copy-btn:hover {
	  transform: scale(1.05);
	  box-shadow: 0 5px 20px rgba(74, 222, 128, 0.4);
  }
  
  .form-group {
	  margin-bottom: 25px;
  }
  
  .form-label {
	  display: block;
	  color: var(--text-secondary);
	  font-size: 0.9rem;
	  margin-bottom: 10px;
	  font-weight: 500;
  }
  
  .form-input {
	  width: 100%;
	  background: var(--white-bg);
	  border: 2px solid var(--card-border);
	  border-radius: 12px;
	  padding: 16px 20px;
	  color: var(--text-primary);
	  font-size: 1rem;
	  outline: none;
	  transition: all 0.3s ease;
  }
  
  .form-input:focus {
	  border-color: var(--accent-green);
	  box-shadow: 0 0 20px rgba(74, 222, 128, 0.1);
  }
  
  .form-input::placeholder {
	  color: var(--dark-silver);
  }
  
  .file-upload {
	  position: relative;
	  background: var(--white-bg);
	  border: 2px dashed var(--card-border);
	  border-radius: 12px;
	  padding: 40px;
	  text-align: center;
	  cursor: pointer;
	  transition: all 0.3s ease;
  }
  
  .file-upload:hover {
	  border-color: var(--accent-green);
	  background: rgba(74, 222, 128, 0.02);
  }
  
  .file-upload.has-file {
	  border-color: var(--success-green);
	  border-style: solid;
  }
  
  .file-upload input {
	  position: absolute;
	  top: 0;
	  left: 0;
	  width: 100%;
	  height: 100%;
	  opacity: 0;
	  cursor: pointer;
  }
  
  .file-upload-icon {
	  font-size: 2.5rem;
	  margin-bottom: 15px;
  }
  
  .file-upload-text {
	  color: var(--text-secondary);
	  font-size: 0.95rem;
  }
  
  .file-upload-hint {
	  color: var(--dark-silver);
	  font-size: 0.8rem;
	  margin-top: 10px;
  }
  
  .file-name {
	  color: var(--success-green);
	  font-weight: 500;
	  margin-top: 10px;
  }
  
  .recaptcha-container {
	  display: flex;
	  justify-content: center;
	  margin: 30px 0;
  }
  
  .btn {
	  width: 100%;
	  padding: 18px 30px;
	  border: none;
	  border-radius: 14px;
	  font-size: 1.1rem;
	  font-weight: 600;
	  cursor: pointer;
	  transition: all 0.3s ease;
	  display: flex;
	  align-items: center;
	  justify-content: center;
	  gap: 10px;
  }
  
  .btn-primary {
	  background: linear-gradient(135deg, var(--accent-green), var(--accent-green-light));
	  color: #fff;
	  box-shadow: 0 10px 30px rgba(74, 222, 128, 0.3);
  }
  
  .btn-primary:hover:not(:disabled) {
	  transform: translateY(-2px);
	  box-shadow: 0 15px 40px rgba(74, 222, 128, 0.4);
  }
  
  .btn-primary:disabled {
	  opacity: 0.5;
	  cursor: not-allowed;
	  transform: none;
  }
  
  .btn-secondary {
	  background: var(--card-bg);
	  color: var(--text-primary);
	  border: 2px solid var(--text-primary);
  }
  
  .btn-secondary:hover {
	  border-color: var(--text-primary);
  }
  
  .btn-group {
	  display: flex;
	  gap: 15px;
	  margin-top: 30px;
  }
  
  .btn-group .btn {
	  flex: 1;
  }
  
  .modal-overlay {
	  position: fixed;
	  top: 0;
	  left: 0;
	  right: 0;
	  bottom: 0;
	  background: rgba(0, 0, 0, 0.8);
	  display: none;
	  align-items: center;
	  justify-content: center;
	  z-index: 1000;
	  padding: 20px;
  }
  
  .modal-overlay.active {
	  display: flex;
  }
  
  .modal-payment {
	  background: var(--card-bg);
	  border: 1px solid var(--card-border);
	  border-radius: 24px;
	  padding: 50px 40px;
	  max-width: 500px;
	  width: 100%;
	  text-align: center;
	  animation: modalIn 0.4s ease;
  }
  
  @keyframes modalIn {
	  from { opacity: 0; transform: scale(0.9); }
	  to { opacity: 1; transform: scale(1); }
  }
  
  .modal-icon {
	  width: 80px;
	  height: 80px;
	  background: linear-gradient(135deg, var(--success-green), var(--accent-green-light));
	  border-radius: 50%;
	  display: flex;
	  align-items: center;
	  justify-content: center;
	  margin: 0 auto 25px;
	  font-size: 2.5rem;
  }
  
  .modal-title {
	  font-size: 1.8rem;
	  font-weight: 700;
	  margin-bottom: 20px;
	  color: var(--text-primary);
  }
  
  .modal-text {
	  color: var(--text-secondary);
	  font-size: 1rem;
	  line-height: 1.8;
	  margin-bottom: 25px;
  }
  
  .modal-ref {
	  background: var(--dark-bg);
	  border: 1px solid var(--card-border);
	  border-radius: 12px;
	  padding: 20px;
	  margin-bottom: 30px;
  }
  
  .modal-ref-label {
	  color: var(--text-secondary);
	  font-size: 0.85rem;
	  margin-bottom: 8px;
  }
  
  .modal-ref-value {
	  font-size: 1.8rem;
	  font-weight: 700;
	  color: var(--accent-green);
	  font-family: 'Courier New', monospace;
  }
  
  .support-link {
	  display: inline-flex;
	  align-items: center;
	  gap: 8px;
	  color: var(--accent-green);
	  text-decoration: none;
	  font-weight: 500;
	  padding: 12px 24px;
	  border: 1px solid var(--accent-green);
	  border-radius: 10px;
	  transition: all 0.3s ease;
	  margin-top: 30px;
  }
  
  .support-link:hover {
	  background: var(--accent-green);
	  color: var(--dark-bg);
  }
  
  .footer {
	  text-align: center;
	  margin-top: 60px;
	  padding-top: 30px;
	  border-top: 1px solid var(--card-border);
  }
  
  .footer a {
	  color: var(--accent-green);
	  text-decoration: none;
	  font-weight: 500;
	  display: inline-flex;
	  align-items: center;
	  gap: 8px;
	  transition: all 0.3s ease;
  }
  
  .footer a:hover {
	  color: var(--accent-green-light);
  }
  
  .error-message {
	  background: rgba(239, 68, 68, 0.1);
	  border: 1px solid var(--error-red);
	  color: var(--error-red);
	  padding: 15px 20px;
	  border-radius: 12px;
	  margin-bottom: 20px;
	  display: none;
  }
  
  .error-message.show {
	  display: block;
  }

  .required-badge {
      background: var(--error-red);
      color: #fff;
      padding: 3px 10px;
      border-radius: 12px;
      font-size: 0.7rem;
      font-weight: 600;
      margin-left: 8px;
      text-transform: uppercase;
  }

  .field-hint {
      color: var(--text-secondary);
      font-size: 0.8rem;
      margin-top: 8px;
      padding-left: 5px;
  }

  .error-modal .modal-icon {
      background: linear-gradient(135deg, var(--error-red), #f87171);
  }

  .error-modal .modal-title {
      color: var(--error-red);
  }

  .modal-overlay .modal-payment {
      max-width: 480px;
  }
  
  .loading-spinner {
	  display: none;
	  width: 24px;
	  height: 24px;
	  border: 3px solid var(--dark-bg);
	  border-top-color: transparent;
	  border-radius: 50%;
	  animation: spin 1s linear infinite;
  }
  
  @keyframes spin {
	  to { transform: rotate(360deg); }
  }
  
  .btn.loading .loading-spinner {
	  display: block;
  }
  
  .btn.loading .btn-text {
	  display: none;
  }
  
  @media (max-width: 768px) {
	  .container {
		  padding: 20px 15px;
	  }
	  
	  .header h1 {
		  font-size: 1.8rem;
	  }
	  
	  .step {
		  padding: 10px 16px;
		  font-size: 0.8rem;
	  }
	  
	  .step-text {
		  display: none;
	  }
	  
	  .plan-card {
		  padding: 30px 20px;
	  }
	  
	  .plan-price {
		  font-size: 2.2rem;
	  }
	  
	  .payment-details {
		  padding: 25px 20px;
	  }
	  
	  .qr-code img {
		  width: 160px;
		  height: 160px;
	  }
	  
	  .wallet-input-group {
		  flex-direction: column;
	  }
	  
	  .btn-group {
		  flex-direction: column;
	  }
	  
	  .modal {
		  padding: 35px 25px;
	  }
  }