* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Inter', sans-serif;
    }

    :root {
      --primary: #2563eb;
      --primary-light: #3b82f6;
      --bg-light: #ffffff;
      --bg-secondary-light: #f8fafc;
      --text-primary-light: #1e293b;
      --text-secondary-light: #64748b;
      --border-light: #e2e8f0;
      --bg-dark: #0f172a;
      --bg-secondary-dark: #1e293b;
      --text-primary-dark: #f1f5f9;
      --text-secondary-dark: #94a3b8;
      --border-dark: #334155;
    }

    body {
      background-color: var(--bg-secondary-light);
      color: var(--text-primary-light);
      transition: all 0.3s ease;
      line-height: 1.6;
    }

    body.dark {
      background-color: var(--bg-dark);
      color: var(--text-primary-dark);
    }

    .container {
      max-width: 1400px;
      margin: 0 auto;
      padding: 2rem 1.5rem;
    }

    .theme-toggle {
      position: fixed;
      top: 20px;
      right: 20px;
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: white;
      border: none;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(37,99,235,0.3);
      transition: all 0.3s ease;
      z-index: 100;
    }

    .theme-toggle:hover {
      background: var(--primary-light);
      transform: scale(1.05);
    }

    /* 轮播 */
    .slider-container {
      width: 100%;
      height: 400px;
      position: relative;
      overflow: hidden;
      border-radius: 20px;
      margin-bottom: 3rem;
      box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    }

    .slider-wrapper {
      height: 100%;
      display: flex;
      transition: transform 0.5s ease;
    }

    .slider-item {
      min-width: 100%;
      height: 100%;
      position: relative;
    }

    .slider-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .slider-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      /*background: linear-gradient(to right, rgba(0,0,0,0.6), rgba(0,0,0,0.3));*/
      display: flex;
      align-items: center;
      padding: 0 6rem;
      color: white;
    }

    .slider-text h2 {
      font-size: 2.8rem;
      margin-bottom: 1rem;
    }

    .slider-text p {
      font-size: 1.2rem;
      max-width: 600px;
    }

    .slider-dots {
      position: absolute;
      bottom: 25px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      gap: 10px;
    }

    .slider-dot {
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: rgba(255,255,255,0.5);
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .slider-dot.active {
      background: white;
      width: 35px;
      border-radius: 7px;
    }

    .slider-btn {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: rgba(255,255,255,0.3);
      color: white;
      border: none;
      font-size: 1.3rem;
      cursor: pointer;
      transition: all 0.3s ease;
      z-index: 10;
    }

    .slider-btn:hover {
      background: rgba(255,255,255,0.6);
      color: var(--primary);
    }

    .slider-prev { left: 30px; }
    .slider-next { right: 30px; }

    /* 头部 */
    .faq-header {
      text-align: center;
      margin-bottom: 2.5rem;
    }

    .faq-header h1 {
      font-size: 2.8rem;
      font-weight: 700;
      margin-bottom: 0.8rem;
      color: var(--primary);
    }

    .faq-header p {
      font-size: 1.2rem;
      color: var(--text-secondary-light);
      max-width: 800px;
      margin: 0 auto;
    }

    body.dark .faq-header p {
      color: var(--text-secondary-dark);
    }

    /* Tab */
    .tab-container {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 1rem;
      margin-bottom: 3rem;
    }

    .tab-btn {
      padding: 1.1rem 2rem;
      border: none;
      border-radius: 50px;
      background: var(--bg-light);
      color: var(--text-secondary-light);
      font-size: 1.1rem;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.3s ease;
      box-shadow: 0 2px 8px rgba(0,0,0,0.05);
      white-space: nowrap;
    }

    body.dark .tab-btn {
      background: var(--bg-secondary-dark);
      color: var(--text-secondary-dark);
    }

    .tab-btn.active {
      background: var(--primary);
      color: white;
      box-shadow: 0 4px 12px rgba(37,99,235,0.3);
    }

    .tab-btn:hover:not(.active) {
      background: rgba(37,99,235,0.08);
      color: var(--primary);
    }

    body.dark .tab-btn:hover:not(.active) {
      background: rgba(37,99,235,0.15);
    }

    /* FAQ */
    .faq-wrapper {
      background: var(--bg-light);
      border-radius: 20px;
      box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05);
      overflow: hidden;
      transition: all 0.3s ease;
      margin-bottom: 2rem;
    }

    body.dark .faq-wrapper {
      background: var(--bg-secondary-dark);
      box-shadow: 0 10px 25px -5px rgba(0,0,0,0.2);
    }

    .faq-item {
      border-bottom: 1px solid var(--border-light);
      transition: all 0.3s ease;
      display: none;
    }

    body.dark .faq-item {
      border-bottom: 1px solid var(--border-dark);
    }

    .faq-item:last-child { border-bottom: none; }
    .faq-item.show { display: block; }

    .faq-question {
      padding: 1.8rem 2.5rem;
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      cursor: pointer;
      font-weight: 600;
      font-size: 1.15rem;
      transition: all 0.3s ease;
    }

    .faq-question:hover {
      background: rgba(37,99,235,0.03);
    }

    body.dark .faq-question:hover {
      background: rgba(37,99,235,0.08);
    }

    .faq-question i {
      color: var(--primary);
      transition: transform 0.3s ease;
      font-size: 1.2rem;
      margin-top: 3px;
    }

    /* 序号样式 */
    .num-icon {
      margin-right: 10px;
      color: var(--primary);
      font-weight: 700;
      min-width: 24px;
      display: inline-block;
    }

    /* 问 答 图标 */
    .ask-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 26px;
      height: 26px;
      background-color: var(--primary);
      color: #fff;
      font-size: 14px;
      font-weight: bold;
      border-radius: 4px;
      margin-right: 12px;
      flex-shrink: 0;
    }

    .answer-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 26px;
      height: 26px;
      background-color: #10b981;
      color: #fff;
      font-size: 14px;
      font-weight: bold;
      border-radius: 4px;
      margin-right: 12px;
      flex-shrink: 0;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      color: var(--text-secondary-light);
    }

    body.dark .faq-answer {
      color: var(--text-secondary-dark);
    }

    .faq-answer-content {
      padding: 0 2.5rem 1.8rem;
      font-size: 1.1rem;
      display: flex;
      align-items: flex-start;
    }

    .faq-item.active .faq-question { color: var(--primary); }
    .faq-item.active .faq-question i { transform: rotate(180deg); }
    .faq-item.active .faq-answer { max-height: 500px; }

    /* 分页样式 */
    .pagination {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 0.6rem;
      margin-top: 2rem;
      flex-wrap: wrap;
    }

    .page-btn {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      border: 1px solid var(--border-light);
      background: var(--bg-light);
      color: var(--text-primary-light);
      font-size: 1rem;
      cursor: pointer;
      transition: all 0.2s ease;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    body.dark .page-btn {
      background: var(--bg-secondary-dark);
      color: var(--text-primary-dark);
      border-color: var(--border-dark);
    }

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

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

    .page-btn:disabled {
      opacity: 0.4;
      cursor: not-allowed;
    }

    /* 响应式 */
    @media (max-width: 1200px) {
      .container { max-width: 95%; }
      .slider-container { height: 360px; }
    }

    @media (max-width: 768px) {
      .slider-container { height: 260px; }
      .slider-overlay { padding: 0 2rem; }
      .slider-text h2 { font-size: 1.8rem; }
      .faq-header h1 { font-size: 2.2rem; }
      .tab-btn { padding: 0.8rem 1.4rem; font-size: 1rem; }
      .faq-question { padding: 1.4rem 1.6rem; font-size: 1.05rem; align-items: center; }
      .faq-answer-content { padding: 0 1.6rem 1.4rem; }
      .theme-toggle { width: 42px; height: 42px; font-size: 1.1rem; }
    }

    @media (max-width: 480px) {
      .slider-container { height: 220px; }
      .faq-header h1 { font-size: 1.9rem; }
      .container { padding: 1.5rem 1rem; }
    }