/* 占位：若需将样式文件复制到 public/assets/，请移除本注释并粘贴 templets/assets/styles.css 的内容 */
/* 为保证页面可用性，这里直接复制样式：*/
:root { --primary: #3a7afe; --secondary: #6c757d; --bg: #f6f8fa; --text: #1f2328; --success: #28a745; --error: #d73a49; }
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; color: var(--text); background: var(--bg); }
.container { max-width: 980px; margin: 32px auto; padding: 0 16px; }
.card { background: #fff; border: 1px solid #e6e8eb; border-radius: 12px; box-shadow: 0 1px 2px rgba(0,0,0,0.04); overflow: hidden; }
.card-header { 
  padding: 14px 16px; border-bottom: 1px solid #eef0f2; font-weight: 600; font-size: 16px;
  display: flex; justify-content: space-between; align-items: center;
}
.card-body { padding: 16px; }

.header-links {
  display: flex; gap: 12px;
}

.header-link {
  color: #007bff; text-decoration: none; font-size: 14px; font-weight: 500;
  padding: 6px 12px; border-radius: 6px; transition: all 0.2s ease;
  border: 1px solid transparent;
}

.header-link:hover {
  background: #007bff; color: white; text-decoration: none;
  transform: translateY(-1px); box-shadow: 0 2px 8px rgba(0, 123, 255, 0.3);
}
.row { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 720px) { .row.cols-2 { grid-template-columns: repeat(2, 1fr); } }
label { display: block; font-size: 13px; margin-bottom: 6px; color: #5b6167; }
input[type="text"], input[type="password"], select, textarea { width: 100%; padding: 10px 12px; border: 1px solid #d0d7de; border-radius: 8px; outline: none; background: #fff; transition: border-color .2s, box-shadow .2s; }
input[type="text"]:focus, input[type="password"]:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(58,122,254,0.15); }
.radio-group { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
button { appearance: none; border: 1px solid transparent; padding: 10px 16px; border-radius: 10px; cursor: pointer; font-weight: 600; background: var(--primary); color: #fff; transition: transform .02s ease, opacity .2s; }
button:hover { opacity: .95; }
button:active { transform: translateY(1px); }
button.secondary { background: #fff; color: var(--text); border-color: #d0d7de; }
button[disabled] { opacity: .6; cursor: not-allowed; }
a.btn { display: inline-flex; align-items: center; padding: 10px 14px; background: #f8f9fa; color: #495057; text-decoration: none; border-radius: 8px; font-size: 14px; font-weight: 500; transition: all 0.2s; }
a.btn:hover { background: #e9ecef; }
a.btn.secondary { background: var(--secondary); color: white; }
a.btn.secondary:hover { opacity: 0.9; }
a.btn.success { background: var(--success); color: white; }
a.btn.success:hover { opacity: 0.9; }
a.btn.error { background: var(--error); color: white; cursor: pointer;}
a.btn.error:hover { opacity: 0.9; }
.number-box { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace; background: #0f172a; color: #e2e8f0; padding: 12px 14px; border-radius: 10px; letter-spacing: 0.3px; }
.muted { color: #8a919a; }
.footer { margin-top: 16px; font-size: 12px; color: #6b7280; text-align: center; }
.hr { height: 1px; background: #eef0f2; margin: 16px 0; }
.tag { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; background: #f1f5ff; color: #334155; border: 1px solid #dbe4ff; border-radius: 100px; font-size: 12px; }

/* 注册表单样式 */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 500; }
.form-group input { width: 100%; padding: 12px 16px; border: 1px solid #d0d7de; border-radius: 8px; font-size: 14px; transition: border-color 0.2s, box-shadow 0.2s; }
.form-group input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(58,122,254,0.15); outline: none; }
.captcha-row { display: flex; gap: 12px; align-items: flex-end; }
.captcha-input { flex: 1; }
.captcha-img { border: 1px solid #d0d7de; border-radius: 8px; cursor: pointer; height: 44px; background: #f6f8fa; display: flex; align-items: center; justify-content: center; font-size: 12px; color: #666; user-select: none; }
.btn-primary { width: 100%; background: var(--primary); color: white; border: none; padding: 12px; border-radius: 8px; font-size: 16px; font-weight: 500; cursor: pointer; transition: opacity 0.2s; }
.btn-primary:hover { opacity: 0.9; }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }
.login-link { text-align: center; margin-top: 20px; color: #666; }
.login-link a { color: var(--primary); text-decoration: none; }
.error-message { color: #d73a49; font-size: 14px; margin-top: 8px; }
.success-message { color: #28a745; font-size: 14px; margin-top: 8px; }

/* 登录认证区域样式 */
.auth-card { margin-bottom: 12px; }
.auth-card-body { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.auth-login-section { 
  display: flex; flex-direction: column; align-items: center; width: 100%; 
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-radius: 16px; padding: 30px 25px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.login-welcome {
  text-align: center; margin-bottom: 20px;
}

.login-welcome h3 {
  color: var(--primary); margin: 0 0 8px 0; font-size: 24px; font-weight: 700;
}

.login-welcome p {
  color: #666; margin: 0; font-size: 16px;
}

.auth-login-form { 
  display: flex; flex-direction: column; gap: 20px; width: 100%; max-width: 400px;
}

.input-group {
  display: flex; align-items: center;
}



.button-group {
  display: flex; flex-direction: column; gap: 12px; margin-top: 5px;
}

.btn-login {
  background: linear-gradient(135deg, var(--primary) 0%, #2968c4 100%);
  color: white; border: none; padding: 14px 24px; border-radius: 8px;
  font-size: 16px; font-weight: 600; cursor: pointer;
  transition: all 0.3s ease; box-shadow: 0 2px 10px rgba(58, 122, 254, 0.3);
}

.btn-login:hover:not(:disabled) {
  transform: translateY(-2px); box-shadow: 0 4px 20px rgba(58, 122, 254, 0.4);
}

.btn-login:disabled {
  opacity: 0.6; cursor: not-allowed; transform: none;
}

.btn-register {
  background: transparent; color: var(--primary); border: 2px solid var(--primary);
  padding: 12px 24px; border-radius: 8px; text-decoration: none; text-align: center;
  font-size: 16px; font-weight: 500; transition: all 0.3s ease;
}

.btn-register:hover {
  background: var(--primary); color: white; text-decoration: none;
}

.auth-error-message {
  background: #fee; color: #c33; padding: 10px 12px; border-radius: 6px;
  font-size: 14px; margin: 10px 0 0 0; border: 1px solid #fcc;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}


.auth-user-info { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; justify-content: space-between; width: 100%; }
.user-details { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.user-actions { display: flex; gap: 8px; align-items: center; }
.auth-input { min-width: 160px; }
.auth-note { font-size: 12px; }
.help-link { 
  display: flex; align-items: center; gap: 8px; color: var(--primary); 
  text-decoration: none; font-size: 14px; padding: 10px 16px; 
  border-radius: 8px; transition: all 0.2s ease; flex: 1; justify-content: center;
  background: rgba(58, 122, 254, 0.05); border: 1px solid rgba(58, 122, 254, 0.1);
}

.help-link:hover { 
  text-decoration: none; background: var(--primary); color: white;
  transform: translateY(-1px); box-shadow: 0 2px 8px rgba(58, 122, 254, 0.3);
}


.hint-text { font-size: 12px; margin-left: 10px; line-height: 20px; }
.tip-text { margin-top: 8px; }

/* 充值页面现代化样式 */
.back-link { color: var(--primary); text-decoration: none; font-size: 14px; }
.back-link:hover { text-decoration: underline; }

/* 充值容器 */
.recharge-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px 0;
}

/* 余额卡片 */
.balance-card {
  display: flex; align-items: center; gap: 16px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 24px; border-radius: 16px; margin-bottom: 32px;
  box-shadow: 0 8px 32px rgba(102, 126, 234, 0.3);
  animation: slideInUp 0.6s ease;
}

.balance-icon {
  font-size: 32px; filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.balance-info {
  flex: 1;
}

.balance-label {
  color: rgba(255, 255, 255, 0.8); font-size: 14px; margin-bottom: 4px;
}

.balance-amount {
  color: white; font-size: 28px; font-weight: 700;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* 区块头部 */
.section-header {
  margin-bottom: 24px; text-align: center;
}

.section-header h3 {
  margin: 0 0 8px 0; color: #2c3e50; font-size: 20px; font-weight: 600;
}

.section-header p {
  margin: 0; color: #7f8c8d; font-size: 14px;
}

/* 加载状态 */
.loading-state {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 40px; color: #7f8c8d;
}

.loading-spinner {
  width: 20px; height: 20px; border: 2px solid #ecf0f1;
  border-top: 2px solid var(--primary); border-radius: 50%;
  animation: spin 1s linear infinite;
}

.loading-spinner.small {
  width: 16px; height: 16px; border-width: 1.5px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 充值金额网格 */
.amount-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 16px; margin-bottom: 32px;
}

.amount-item {
  position: relative; cursor: pointer;
}

.amount-item input {
  position: absolute; opacity: 0; pointer-events: none;
}

.amount-card-modern {
  background: white; border: 2px solid #ecf0f1; border-radius: 12px;
  padding: 20px 16px; text-align: center; transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.amount-card-modern:hover {
  border-color: var(--primary); transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(58, 122, 254, 0.2);
}

.amount-item input:checked + .amount-card-modern {
  border-color: var(--primary); background: var(--primary); color: white;
  transform: translateY(-2px); box-shadow: 0 8px 24px rgba(58, 122, 254, 0.3);
}

.amount-value {
  font-size: 20px; font-weight: 700; margin-bottom: 4px;
}

.amount-label {
  font-size: 12px; opacity: 0.8;
}

/* 支付方式网格 */
.payment-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px; margin-bottom: 32px;
}

.payment-item {
  position: relative; cursor: pointer;
}

.payment-item input {
  position: absolute; opacity: 0; pointer-events: none;
}

.payment-card-modern {
  display: flex; align-items: center; gap: 12px;
  background: white; border: 2px solid #ecf0f1; border-radius: 12px;
  padding: 16px; transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.payment-card-modern:hover {
  border-color: var(--primary); transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(58, 122, 254, 0.2);
}

.payment-item input:checked + .payment-card-modern {
  border-color: var(--primary); background: var(--primary); color: white;
  transform: translateY(-2px); box-shadow: 0 8px 24px rgba(58, 122, 254, 0.3);
}

.payment-icon-modern {
  width: 40px; height: 40px; border-radius: 8px; display: flex;
  align-items: center; justify-content: center; flex-shrink: 0;
}

.payment-icon-modern.alipay {
  background: #1677ff; color: white;
}

.payment-icon-modern.wechat {
  background: #07c160; color: white;
}

.payment-item input:checked + .payment-card-modern .payment-icon-modern {
  background: rgba(255, 255, 255, 0.2);
}

.payment-info {
  flex: 1;
}

.payment-name {
  font-weight: 600; margin-bottom: 2px;
}

.payment-desc {
  font-size: 12px; opacity: 0.7;
}

/* 充值操作区域 */
.recharge-action {
  animation: slideInUp 0.4s ease;
}

.order-preview {
  background: #f8f9fa; border-radius: 12px; padding: 20px; margin-bottom: 20px;
  border: 1px solid #e9ecef;
}

.preview-item {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px;
}

.preview-item:last-child {
  margin-bottom: 0;
}

.preview-item span {
  color: #6c757d;
}

.preview-item strong {
  color: #2c3e50; font-weight: 600;
}

/* 充值按钮 */
.recharge-btn {
  width: 100%; background: linear-gradient(135deg, var(--primary) 0%, #2968c4 100%);
  color: white; border: none; border-radius: 12px; padding: 16px 24px;
  font-size: 16px; font-weight: 600; cursor: pointer; transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(58, 122, 254, 0.3);
  position: relative; overflow: hidden;
}

.recharge-btn:hover:not(:disabled) {
  transform: translateY(-2px); box-shadow: 0 8px 24px rgba(58, 122, 254, 0.4);
}

.recharge-btn:disabled {
  opacity: 0.7; cursor: not-allowed; transform: none;
}

.btn-loading {
  display: flex; align-items: center; justify-content: center; gap: 8px;
}

.btn-icon {
  margin-right: 8px;
}

/* 价格信息区域 */
.pricing-info {
  margin-top: 48px; background: white; border-radius: 16px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08); overflow: hidden;
}

.pricing-header {
  text-align: center; padding: 32px 24px 24px; 
  background: #f8f9fa;
}

.pricing-header h3 {
  margin: 0 0 8px 0; color: #2c3e50; font-size: 20px; font-weight: 600;
}

.pricing-header p {
  margin: 0; color: #7f8c8d; font-size: 14px;
}

.pricing-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1px; background: #f8f9fa; padding: 24px; padding-top: 0;
}

.pricing-tier {
  background: white; padding: 20px 16px; text-align: center; position: relative;
  border-radius: 8px; transition: all 0.3s ease;
}

.pricing-tier:hover {
  transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.pricing-tier.popular {
  border: 2px solid #f39c12; background: linear-gradient(135deg, #fff 0%, #fef9e7 100%);
}

.pricing-tier.premium {
  border: 2px solid #e74c3c; background: linear-gradient(135deg, #fff 0%, #fdf2f2 100%);
}

.tier-badge {
  position: absolute; top: -8px; left: 50%; transform: translateX(-50%);
  background: #f39c12; color: white; font-size: 10px; font-weight: 600;
  padding: 4px 8px; border-radius: 4px;
}

.pricing-tier.premium .tier-badge {
  background: #e74c3c;
}

.tier-range {
  font-size: 12px; color: #7f8c8d; margin-bottom: 8px; font-weight: 500;
}

.tier-price {
  font-size: 18px; font-weight: 700; color: #2c3e50;
}

.tier-price span {
  font-size: 12px; font-weight: 400; color: #7f8c8d;
}

.pricing-notes {
  padding: 24px; background: #f8f9fa;
}

.note-item {
  display: flex; align-items: flex-start; gap: 8px; margin-bottom: 12px;
  font-size: 14px; line-height: 1.5;
}

.note-item:last-child {
  margin-bottom: 0;
}

.note-item.important {
  color: #e74c3c; font-weight: 500;
}

.note-icon {
  flex-shrink: 0;
}

/* 动画 */
@keyframes slideInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 弹窗样式 */
.modal-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.5); z-index: 1000;
  display: flex; align-items: center; justify-content: center;
}

.modal-content {
  background: white; border-radius: 8px; box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  width: 90%; max-width: 400px; overflow: hidden;
}

.modal-header {
  padding: 20px; border-bottom: 1px solid #eee; display: flex; 
  justify-content: space-between; align-items: center;
}

.modal-header h3 {
  margin: 0; color: var(--primary); font-size: 18px;
}

.modal-close {
  background: none; border: none; font-size: 24px; cursor: pointer;
  color: #999; line-height: 1; padding: 0; width: 24px; height: 24px;
}

.modal-close:hover {
  color: #666;
}

.modal-body {
  padding: 20px;
}

.modal-body label {
  display: block; margin-bottom: 10px; color: #333; font-weight: 500;
}

.modal-input {
  width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 4px;
  font-size: 16px; box-sizing: border-box;
}

.modal-input:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.2);
}

.modal-footer {
  padding: 20px; border-top: 1px solid #eee; display: flex; gap: 10px; justify-content: flex-end;
}

.modal-footer .btn {
  padding: 10px 20px; min-width: 80px;
}

.btn.primary {
  background: var(--primary); color: white;
}

.btn.primary:hover:not(:disabled) {
  background: #3a7bc8;
}

.btn.primary:disabled {
  background: #ccc; cursor: not-allowed;
}

/* 帮助页面样式 */
.help-section {
  margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid #eee;
}

.help-section:last-child {
  border-bottom: none;
}

.help-section h3 {
  color: var(--primary); margin-bottom: 15px; font-size: 18px;
}

.help-section ul {
  margin: 10px 0; padding-left: 20px;
}

.help-section li {
  margin-bottom: 8px; line-height: 1.6;
}

.warning-box {
  background: #fff3cd; border: 1px solid #ffeaa7; border-radius: 8px; padding: 20px; margin: 15px 0;
}

.warning-box h4 {
  color: #856404; margin: 0 0 10px 0;
}

.faq-item {
  background: #f8f9fa; border-radius: 8px; padding: 15px; margin: 10px 0;
}

.faq-item h4 {
  color: var(--primary); margin: 0 0 8px 0; font-size: 16px;
}

.faq-item p {
  margin: 0; color: #555;
}

/* 关键词示例区域样式 */
.keyword-examples {
  background: #f8f9fa; border-radius: 8px; padding: 20px; margin: 15px 0;
  border-left: 4px solid var(--primary);
}

.keyword-examples h5 {
  color: var(--primary); margin: 0 0 15px 0; font-size: 16px; font-weight: 600;
}

.example-item {
  background: white; border-radius: 6px; padding: 15px; margin: 10px 0;
  border: 1px solid #e9ecef; font-family: 'Courier New', monospace;
}

.example-item strong {
  color: #333; font-weight: 600;
}

.keyword-warning {
  background: #fff3cd; border: 1px solid #ffeaa7; border-radius: 6px; 
  padding: 15px; margin: 15px 0; color: #856404;
}

.keyword-warning strong {
  color: #d63384; font-weight: 700;
}

/* 指定号码说明区域样式 */
.specify-number-info {
  background: #f0f8ff; border-radius: 8px; padding: 20px; margin: 15px 0;
  border-left: 4px solid #007bff;
}

.specify-number-info > p:first-child {
  color: #007bff; font-weight: 600; margin: 0 0 10px 0; font-size: 16px;
}

.specify-number-info > p:nth-child(2) {
  color: #333; line-height: 1.6; margin: 0 0 20px 0;
}

.usage-scenario {
  background: white; border-radius: 6px; padding: 15px; margin: 15px 0;
  border: 1px solid #e3f2fd;
}

.usage-scenario h5 {
  color: #1976d2; margin: 0 0 10px 0; font-size: 15px; font-weight: 600;
}

.usage-scenario ul {
  margin: 0; padding-left: 20px;
}

.usage-scenario li {
  color: #555; line-height: 1.5; margin-bottom: 5px;
}

.specify-tips {
  background: #e8f5e8; border-radius: 6px; padding: 15px; margin: 15px 0;
  border: 1px solid #c8e6c9;
}

.specify-tips h5 {
  color: #2e7d32; margin: 0 0 8px 0; font-size: 15px; font-weight: 600;
}

.specify-tips p {
  color: #2e7d32; margin: 0; line-height: 1.5; font-size: 14px;
}

/* 重要提醒样式 */
.important-notice {
  background: linear-gradient(135deg, #4caf50 0%, #2e7d32 100%);
  color: white !important; padding: 12px 16px; border-radius: 8px;
  margin: 10px 0 !important; font-weight: 600;
  box-shadow: 0 3px 10px rgba(76, 175, 80, 0.3);
  border-left: 4px solid #1b5e20;
}

.important-notice strong {
  color: #fff3e0; text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

/* 功能介绍页面样式 */
.platform-intro {
  background: linear-gradient(145deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  border-radius: 24px; padding: 60px 40px; margin: 30px 0; text-align: center;
  position: relative; overflow: hidden;
  box-shadow: 0 20px 60px rgba(102, 126, 234, 0.3);
}

.platform-intro::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.1) 0%, transparent 50%);
  pointer-events: none;
}

.intro-icon {
  font-size: 72px; margin-bottom: 25px; display: block;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.intro-content {
  position: relative; z-index: 1;
}

.intro-content h3 {
  color: white; margin-bottom: 25px; font-size: 32px; font-weight: 700;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
  letter-spacing: -0.5px;
}

.intro-desc {
  font-size: 20px; line-height: 1.7; color: rgba(255,255,255,0.95); 
  margin-bottom: 40px; max-width: 900px; margin-left: auto; margin-right: auto;
  text-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.intro-desc strong {
  color: #fff; font-weight: 700;
  background: rgba(255, 255, 255, 0.2);
  padding: 2px 8px; border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.3);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

.intro-highlights {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); 
  gap: 25px; margin-top: 40px;
}

.highlight-item {
  display: flex; align-items: center; justify-content: flex-start; 
  background: rgba(255,255,255,0.15); border-radius: 16px; padding: 25px; 
  backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.2);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative; overflow: hidden;
}

.highlight-item::before {
  content: '';
  position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.5s ease;
}

.highlight-item:hover::before {
  left: 100%;
}

.highlight-item:hover {
  transform: translateY(-5px) scale(1.02);
  background: rgba(255,255,255,0.25);
  box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

.highlight-icon {
  font-size: 28px; margin-right: 15px; min-width: 40px;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.highlight-item span:last-child {
  color: white; font-weight: 600; font-size: 16px; line-height: 1.4;
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.use-cases {
  margin: 50px 0; padding: 50px 40px; 
  background: linear-gradient(135deg, #2c3e50 0%, #34495e 50%, #2c3e50 100%); 
  border-radius: 20px; color: white; position: relative; overflow: hidden;
  box-shadow: 0 15px 35px rgba(44, 62, 80, 0.4);
}

.use-cases::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.05"><circle cx="30" cy="30" r="2"/></g></g></svg>');
  pointer-events: none;
}

.use-cases h3 {
  color: white; text-align: center; margin-bottom: 35px; font-size: 26px; font-weight: 700;
  position: relative; z-index: 1;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.case-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 25px;
  position: relative; z-index: 1;
}

.case-item {
  background: rgba(255,255,255,0.12); border-radius: 16px; padding: 30px 25px; text-align: center;
  backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.15);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative; overflow: hidden;
}

.case-item::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, #3498db, #9b59b6, #e74c3c);
  transform: scaleX(0); transition: transform 0.3s ease;
}

.case-item:hover::before {
  transform: scaleX(1);
}

.case-item:hover {
  transform: translateY(-8px);
  background: rgba(255,255,255,0.18);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.case-item h4 {
  color: white; margin: 0 0 15px 0; font-size: 18px; font-weight: 600;
  text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.case-item p {
  color: rgba(255,255,255,0.85); margin: 0; font-size: 15px; line-height: 1.6;
}

.advantages {
  margin: 50px 0; padding: 0 20px;
}

.advantages h3 {
  text-align: center; margin-bottom: 40px; color: var(--primary); 
  font-size: 28px; font-weight: 700; position: relative;
}

.advantages h3::after {
  content: '';
  position: absolute; bottom: -10px; left: 50%; transform: translateX(-50%);
  width: 80px; height: 3px; background: linear-gradient(90deg, var(--primary), #9b59b6);
  border-radius: 2px;
}

.advantage-list {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 25px;
}

.advantage-item {
  display: flex; align-items: center; 
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%); 
  border-radius: 16px; padding: 25px; position: relative; overflow: hidden;
  border: 1px solid #e9ecef;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.advantage-item::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: linear-gradient(180deg, var(--primary), #9b59b6, #e74c3c);
}

.advantage-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.15);
  background: linear-gradient(135deg, #ffffff 0%, #f0f8ff 100%);
}

.advantage-icon {
  font-size: 32px; margin-right: 20px; min-width: 50px;
  background: linear-gradient(135deg, var(--primary), #9b59b6);
  background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.advantage-content h4 {
  margin: 0 0 8px 0; color: var(--primary); font-size: 18px; font-weight: 600;
}

.advantage-content p {
  margin: 0; color: #555; font-size: 15px; line-height: 1.5;
}

.getting-started {
  margin: 50px 0; padding: 50px 40px; 
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 50%, #4facfe 100%); 
  border-radius: 20px; position: relative; overflow: hidden;
  box-shadow: 0 20px 60px rgba(240, 147, 251, 0.3);
}

.getting-started::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: 
    radial-gradient(circle at 30% 70%, rgba(255,255,255,0.1) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(255,255,255,0.1) 0%, transparent 50%);
  pointer-events: none;
}

.getting-started h3 {
  text-align: center; margin-bottom: 40px; color: white; 
  font-size: 28px; font-weight: 700; position: relative; z-index: 1;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.steps {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 25px;
  position: relative; z-index: 1;
}

.step {
  display: flex; align-items: flex-start; 
  background: rgba(255,255,255,0.15); border-radius: 16px; padding: 25px;
  backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.2);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.step:hover {
  transform: translateY(-5px);
  background: rgba(255,255,255,0.25);
  box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

.step-number {
  background: linear-gradient(135deg, #667eea, #764ba2); 
  color: white; width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; 
  font-weight: bold; margin-right: 20px; min-width: 40px;
  font-size: 18px; box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.step-content h4 {
  margin: 0 0 10px 0; color: white; font-size: 18px; font-weight: 600;
  text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.step-content p {
  margin: 0; color: rgba(255,255,255,0.9); font-size: 15px; line-height: 1.6;
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.payment-card { flex-direction: column; gap: 5px; }
.payment-icon { font-size: 20px; }

.order-summary { margin-top: 30px; }
.summary-card { background: #f8f9fa; padding: 20px; border-radius: 8px; margin-bottom: 20px; font-size: 14px;}
.summary-card h5 { margin-bottom: 15px; color: #333; }
.summary-item { display: flex; justify-content: space-between; margin-bottom: 10px; padding: 5px 0; }
.summary-item:last-child { border-top: 1px solid #ddd; padding-top: 10px; margin-top: 10px; font-weight: bold; }
.summary-item .amount { color: var(--primary); font-weight: bold; }

/* 响应式布局 */
@media (max-width: 768px) {
  .auth-login-section { padding: 25px 15px; }
  .login-welcome h3 { font-size: 20px; }
  .auth-login-form { max-width: 100%; }
  .auth-user-info { flex-direction: column; align-items: stretch; gap: 12px; }
  .user-details { justify-content: center; }
  .user-actions { justify-content: center; }
  .amount-options, .payment-options { grid-template-columns: repeat(2, 1fr); }
}