:host {
    display: block;
    background-color: #f0f5ff;
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
    background: linear-gradient(135deg, #e6f0ff 0%, #f5f9ff 100%);
    min-height: 100vh;
    padding: 20px 0;
  }
  
  /* 变量定义 */
  :root {
    --primary: #64a0ff;
    --primary-light: rgba(100, 160, 255, 0.1);
    --dark: #0a192f;
    --dark-light: #112240;
    --gray: #8892b0;
    --light-gray: #f8f9fa;
    --white: #ffffff;
    --blue: #64a0ff;
    --blue-light: rgba(100, 160, 255, 0.15);
    --yellow: #ffd43b;
    --orange: #ff922b;
    --purple: #9c36b5;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    --shadow-primary: 0 4px 20px rgba(100, 160, 255, 0.2);
  }
  
  /* 基础样式 */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
  }
  
  /* 容器样式 */
  .container {
    max-width: 480px;
    margin: 0 auto;
    padding: 0 16px 30px;
    position: relative;
  }
  
  /* 顶部导航 */
  .app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    margin-bottom: 15px;
    border-bottom: 1px solid rgba(10, 25, 47, 0.05);
  }
  
  .header-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 10px;
  }
  
  .header-title i {
    color: var(--primary);
    background: var(--primary-light);
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  /* 场景选择 */
  .scene-selector {
    background: var(--white);
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(100, 160, 255, 0.2);
  }
  
  .scene-options {
    display: flex;
    gap: 15px;
    margin-top: 10px;
  }
  
  .scene-option {
    flex: 1;
    padding: 15px;
    border-radius: 15px;
    background: var(--light-gray);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid rgba(100, 160, 255, 0.1);
  }
  
  .scene-option.active {
    background: var(--primary-light);
    border-color: var(--primary);
    box-shadow: var(--shadow-primary);
  }
  
  .scene-option i {
    font-size: 28px;
    margin-bottom: 10px;
    color: var(--primary);
  }
  
  .scene-option h3 {
    font-size: 16px;
    margin-bottom: 5px;
  }
  
  .scene-option p {
    font-size: 13px;
    color: var(--gray);
  }
  
  /* 对话聊天区 */
  .chat-area {
    background: var(--white);
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    height: 350px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
    border: 1px solid rgba(100, 160, 255, 0.2);
  }
  
  .chat-title, .input-title, .strategy-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(100, 160, 255, 0.1);
  }
  
  .chat-title i, .input-title i, .strategy-title i {
    color: var(--primary);
  }
  
  .chat-message {
    max-width: 85%;
    padding: 14px 18px;
    border-radius: 18px;
    position: relative;
    animation: fadeIn 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  }
  
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
  }
  
  .customer-message {
    background: linear-gradient(135deg, #e6f0ff, #ebf2ff);
    align-self: flex-start;
    border-bottom-left-radius: 5px;
    border-left: 3px solid var(--blue);
  }
  
  .assistant-message {
    background: linear-gradient(135deg, #e6f7ff, #ebf9ff);
    border: 1px solid rgba(100, 160, 255, 0.3);
    align-self: flex-end;
    border-bottom-right-radius: 5px;
    border-right: 3px solid var(--primary);
  }
  
  .message-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-weight: 600;
  }
  
  .customer-header .icon {
    background: var(--blue-light);
    color: var(--blue);
  }
  
  .assistant-header .icon {
    background: var(--primary-light);
    color: var(--primary);
  }
  
  .message-header .icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
  }
  
  .message-content {
    line-height: 1.5;
  }
  
  .message-time {
    font-size: 11px;
    color: var(--gray);
    margin-top: 8px;
    text-align: right;
  }
  
  /* 客户标签编辑区 */
  .tags-area {
    background: var(--light-gray);
    border-radius: 15px;
    padding: 15px;
    margin-top: 10px;
    border: 1px solid rgba(100, 160, 255, 0.1);
  }
  
  .tags-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
  }
  
  .tags-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
  }
  
  .input-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
  }
  
  .tag {
    background: var(--primary-light);
    color: var(--primary);
    padding: 6px 12px 6px 8px;
    border-radius: 20px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid rgba(100, 160, 255, 0.2);
  }
  
  .tag:hover {
    background: rgba(100, 160, 255, 0.3);
  }
  
  .tag .delete {
    font-size: 12px;
    margin-left: 5px;
    opacity: 0.7;
  }
  
  .tag .delete:hover {
    opacity: 1;
  }
  
  .add-tag {
    background: rgba(136, 146, 176, 0.1);
    color: var(--gray);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    transition: all 0.2s ease;
  }
  
  .add-tag:hover {
    background: rgba(136, 146, 176, 0.2);
  }
  
  /* 输入工作区 */
  .input-area {
    background: var(--white);
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(100, 160, 255, 0.2);
  }
  
  .role-selector {
    display: flex;
    background: var(--light-gray);
    border-radius: 12px;
    padding: 4px;
    margin-bottom: 15px;
  }
  
  .role-btn {
    flex: 1;
    padding: 10px;
    text-align: center;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
  }
  
  .role-btn.active {
    background: var(--white);
    box-shadow: var(--shadow);
    color: var(--primary);
  }
  
  .input-field {
    position: relative;
  }
  
  .text-input {
    width: 100%;
    height: 120px;
    padding: 15px;
    border-radius: 15px;
    border: 1px solid rgba(136, 146, 176, 0.2);
    background: var(--light-gray);
    resize: none;
    font-size: 16px;
    color: var(--dark);
    transition: all 0.3s ease;
  }
  
  .text-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(100, 160, 255, 0.2);
  }
  
  /* 策略卡片组 */
  .strategy-area {
    margin-bottom: 25px;
  }
  
  .cards-container {
    position: relative;
    height: 320px;
    perspective: 1000px;
  }
  
  .strategy-card {
    position: absolute;
    width: 100%;
    height: 280px;
    border-radius: 20px;
    padding: 25px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), 
                opacity 0.4s ease, 
                box-shadow 0.3s ease;
    backface-visibility: hidden;
    cursor: pointer;
    border: 1px solid rgba(100, 160, 255, 0.2);
  }
  
  .card-aggressive {
    background: linear-gradient(135deg, #eef6ff, #f0f8ff);
    border-top: 4px solid var(--blue);
    z-index: 30;
  }
  
  .card-neutral {
    background: linear-gradient(135deg, #fff9e6, #fffbf0);
    border-top: 4px solid var(--yellow);
    transform: translateY(20px) scale(0.95);
    z-index: 20;
  }
  
  .card-conservative {
    background: linear-gradient(135deg, #f9f0ff, #fdf5ff);
    border-top: 4px solid var(--purple);
    transform: translateY(40px) scale(0.9);
    z-index: 10;
  }
  
  .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
  }
  
  .card-title {
    font-size: 18px;
    font-weight: 700;
  }
  
  .card-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
  }
  
  .card-content {
    flex: 1;
    overflow-y: auto;
    padding-right: 10px;
  }
  
  .card-content p {
    margin-bottom: 15px;
    line-height: 1.7;
    color: #333;
  }
  
  .card-highlight {
    background: rgba(10, 25, 47, 0.05);
    padding: 12px 15px;
    border-radius: 12px;
    border-left: 3px solid var(--primary);
    margin: 15px 0;
    font-weight: 500;
    line-height: 1.6;
  }
  
  .card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid rgba(136, 146, 176, 0.1);
  }
  
  .card-hint {
    font-size: 14px;
    color: var(--gray);
  }
  
  /* 卡片导航点 */
  .card-navigation {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 15px;
  }
  
  .card-nav-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--light-gray);
    cursor: pointer;
    transition: all 0.2s ease;
  }
  
  .card-nav-btn.active {
    background: var(--primary);
    transform: scale(1.2);
  }
  
  /* 操作按钮 */
  .action-buttons {
    display: flex;
    gap: 15px;
    margin-top: 25px;
  }
  
  .action-btn {
    flex: 1;
    height: 50px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
  }
  
  .save-btn {
    background: var(--primary);
    color: var(--dark);
    border: none;
    box-shadow: 0 4px 15px rgba(100, 160, 255, 0.3);
  }
  
  .save-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(100, 160, 255, 0.4);
  }
  
  .history-btn {
    background: var(--white);
    color: var(--dark);
    border: 2px solid var(--primary);
    box-shadow: 0 4px 15px rgba(100, 160, 255, 0.1);
  }
  
  .history-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(100, 160, 255, 0.2);
  }
  
  /* 响应式调整 */
  @media (max-width: 380px) {
    .container {
      padding: 0 12px 25px;
    }
    
    .scene-options {
      flex-direction: column;
    }
    
    .cards-container {
      height: 300px;
    }
    
    .strategy-card {
      height: 260px;
      padding: 20px;
    }
    
    .chat-area {
      height: 320px;
    }
  }