:root {
    --primary-color: #1890FF;
    --secondary-color: #40A9FF;
    --accent-color: #096DD9;
    --background-color: #F0F2F5;
    --text-color: #262626;
    --text-muted: #8C8C8C;
    --card-shadow: 0 10px 20px rgba(24, 144, 255, 0.1);
    --hover-shadow: 0 20px 40px rgba(24, 144, 255, 0.15);
  }

  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
  }

  .navbar {
    background: rgba(255, 255, 255, 0.98);
    padding: 1rem 0;
    position: absolute;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    backdrop-filter: blur(20px);
    box-shadow: none;
    border-bottom: 1px solid rgba(24, 144, 255, 0.1);
  }

  .navbar.fixed {
    position: fixed;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  }

  .navbar-brand {
    color: var(--primary-color) !important;
    font-weight: 700;
    font-size: 1.35rem;
    position: relative;
    padding: 0.5rem 0;
    letter-spacing: -0.5px;
  }

  .navbar-brand::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
  }

  .navbar-brand:hover::after {
    transform: scaleX(1);
  }

  .nav-link {
    color: #1a1a1a !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease;
    position: relative;
    opacity: 0.8;
    letter-spacing: 0.2px;
  }

  .nav-link:hover,
  .nav-item.active .nav-link {
    color: var(--primary-color) !important;
    opacity: 1;
    transform: translateY(-1px);
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
  }

  .nav-link:hover::after,
  .nav-item.active .nav-link::after {
    width: 30px;
  }

  .btn-download {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 0.6rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(50, 150, 250, 0.2);
  }

  .btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(50, 150, 250, 0.3);
    color: white;
    text-decoration: none;
  }

  @media (max-width: 768px) {
    .navbar {
      background: rgba(255, 255, 255, 0.98);
    }
  }

  .hero-section {
    background: linear-gradient(135deg, #1890FF 0%, #40A9FF 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 0;
  }

  .hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: 
      radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 30%),
      radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.12) 0%, transparent 35%),
      radial-gradient(circle at 40% 80%, rgba(255, 255, 255, 0.18) 0%, transparent 40%);
    opacity: 0.8;
    animation: backgroundShimmer 15s ease-in-out infinite;
  }

  @keyframes backgroundShimmer {
    0% { background-position: 0% 0%; }
    50% { background-position: 100% 100%; }
    100% { background-position: 0% 0%; }
  }

  .hero-section::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: linear-gradient(45deg, 
      rgba(50, 150, 250, 0.2) 0%,
      rgba(31, 140, 235, 0.1) 50%,
      rgba(13, 115, 217, 0.2) 100%);
    pointer-events: none;
    mix-blend-mode: overlay;
  }

  .hero-content {
    position: relative;
    z-index: 1;
    color: white;
  }

  .hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.9) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }

  .hero-text {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2rem;
  }

  .version-badge {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    display: inline-block;
  }

  .mobile-preview {
    position: relative;
    max-width: 300px;
    margin: 0 auto;
  }

  .mobile-preview img {
    width: 100%;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
  }

  .stack-slider {
    position: relative;
    height: 600px;
    perspective: 1000px;
  }

  .stack-slider .slide {
    position: absolute;
    width: 300px;
    height: auto;
    top: 50%;
    left: 50%;
    transform-origin: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    visibility: hidden;
  }

  .stack-slider .slide.active {
    transform: translate(-50%, -50%) translateZ(0) rotate(0deg);
    opacity: 1;
    visibility: visible;
    z-index: 3;
  }

  .stack-slider .slide.prev {
    transform: translate(-80%, -50%) translateZ(-100px) rotate(-5deg);
    opacity: 0.6;
    visibility: visible;
    z-index: 2;
  }

  .stack-slider .slide.next {
    transform: translate(-20%, -50%) translateZ(-100px) rotate(5deg);
    opacity: 0.6;
    visibility: visible;
    z-index: 1;
  }

  .stack-slider .mobile-preview:hover img {
    transform: translateY(-10px);
  }

  .floating {
    animation: floating 4s ease-in-out infinite;
  }

  @keyframes floating {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
  }

  .btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(24, 144, 255, 0.2);
  }

  .btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 0.75rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .btn-primary:hover,
  .btn-outline:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(24, 144, 255, 0.3);
  }

  .section-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    letter-spacing: -0.5px;
  }
  
  .features-section {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff 0%, var(--background-color) 100%);
  }
  
  .features-section .mobile-preview {
    position: sticky;
    top: 120px;
  }

  .features-section .section-title {
    font-size: 2.25rem;
    margin-bottom: 1rem;
  }

  .features-section .text-muted {
    font-size: 1.1rem;
    margin-bottom: 3rem;
  }

  .features-list {
    padding: 1rem 0;
  }

  .feature-item {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(24, 144, 255, 0.1);
    transform: translateY(0);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
  }
  
  .feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
    border-color: rgba(24, 144, 255, 0.2);
  }
  
  .feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    flex-shrink: 0;
  }
  
  .feature-content {
    flex: 1;
  }
  
  .feature-content h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-color);
  }
  
  .feature-content p {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-muted);
    margin-bottom: 0;
  }
  
  .contact-section {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--background-color) 0%, #fff 100%);
    position: relative;
    overflow: hidden;
  }
  
  .contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: 
      radial-gradient(circle at 20% 20%, rgba(24, 144, 255, 0.03) 0%, transparent 30%),
      radial-gradient(circle at 80% 50%, rgba(24, 144, 255, 0.02) 0%, transparent 35%);
    pointer-events: none;
  }

  .contact-section .section-title {
    font-size: 2.25rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    position: relative;
  }

  .contact-section p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-muted);
    margin-bottom: 2rem;
  }

  .contact-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
  }

  .contact-buttons .btn {
    padding: 0.75rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 160px;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .contact-buttons .btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    color: white;
    box-shadow: 0 4px 15px rgba(24, 144, 255, 0.2);
  }

  .contact-buttons .btn-outline-primary {
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
  }

  .contact-buttons .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(24, 144, 255, 0.2);
  }

  .contact-section .mobile-preview {
    position: relative;
    max-width: 280px;
    margin: 0 auto;
    transform: perspective(1000px) rotateY(-15deg);
    transition: all 0.5s ease;
  }

  .contact-section .mobile-preview:hover {
    transform: perspective(1000px) rotateY(-5deg) translateY(-10px);
  }

  .contact-section .mobile-preview img {
    width: 100%;
    border-radius: 24px;
    box-shadow: 
      20px 20px 60px rgba(24, 144, 255, 0.1),
      -20px -20px 60px rgba(255, 255, 255, 0.8);
  }

  @media (max-width: 768px) {
    .contact-section {
      padding: 4rem 1.5rem;
      text-align: center;
    }

    .contact-section .section-title {
      font-size: 2rem;
      margin-bottom: 1rem;
    }

    .contact-section p {
      font-size: 1rem;
      margin-bottom: 2rem;
    }

    .contact-buttons {
      flex-direction: column;
      align-items: stretch;
      gap: 1rem;
      margin: 2rem auto;
      max-width: 280px;
    }

    .contact-buttons .btn {
      width: 100%;
      padding: 0.875rem 1rem;
      font-size: 1rem;
      margin: 0 !important;
      border-radius: 12px;
      height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
    }

    .contact-buttons .btn-primary,
    .contact-buttons .btn-outline-primary {
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      border: none;
      color: white;
    }

    .contact-buttons .btn-outline-primary {
      background: transparent;
      border: 2px solid var(--primary-color);
      color: var(--primary-color);
    }

    .contact-section .mobile-preview {
      margin-top: 3rem;
      transform: none;
      max-width: 240px;
    }

    .contact-section .mobile-preview:hover {
      transform: translateY(-10px);
    }

    /* 底栏移动端优化 */
    .footer {
      padding: 3rem 1.5rem 2rem;
      text-align: center;
    }

    .footer-logo {
      font-size: 1.5rem;
      margin-bottom: 1rem;
    }

    .footer-description {
      font-size: 0.95rem;
      line-height: 1.6;
      margin: 0 auto 1.5rem;
      max-width: 300px;
    }

    .footer-links {
      flex-direction: column;
      align-items: center;
      gap: 1rem;
      margin-bottom: 2rem;
    }

    .footer-link {
      font-size: 1rem;
      padding: 0.5rem 1rem;
      display: inline-block;
    }

    .footer-divider {
      margin: 1.5rem auto;
      width: 80%;
      opacity: 0.1;
    }

    .copyright {
      flex-direction: column;
      align-items: center;
      gap: 1rem;
      font-size: 0.9rem;
    }

    .copyright div {
      text-align: center;
    }

    .copyright a {
      display: inline-block;
      padding: 0.5rem 1rem;
    }
  }

  .footer {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    padding: 3rem 0 1.5rem;
    position: relative;
    overflow: hidden;
  }

  .footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
      radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 30%),
      radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 35%);
    opacity: 0.8;
    pointer-events: none;
  }

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

  .footer-logo {
    font-size: 1.75rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
    display: inline-block;
    background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .footer-description {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
    max-width: 500px;
  }

  .footer-links {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
  }

  .footer-link {
    color: rgba(255, 255, 255, 0.9) !important;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
  }

  .footer-link:hover {
    color: white !important;
    transform: translateY(-2px);
    text-decoration: none !important;
  }

  .footer-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: white;
    transform: scaleX(0);
    transition: transform 0.3s ease;
  }

  .footer-link:hover::after {
    transform: scaleX(1);
  }

  .footer-divider {
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: 1.5rem 0;
  }

  .copyright {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .copyright a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
  }

  .copyright a:hover {
    color: white;
    text-decoration: none;
    opacity: 0.9;
  }

  @media (max-width: 768px) {
    .footer {
      padding: 2.5rem 0 1.5rem;
    }
    
    .footer-links {
      flex-direction: column;
      gap: 0.75rem;
      margin-bottom: 1.5rem;
    }
    
    .copyright {
      flex-direction: column;
      text-align: center;
      gap: 0.75rem;
    }
  }

  .pricing-section {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--background-color) 0%, #fff 100%);
  }

  .pricing-section .card {
    border-radius: 24px;
    padding: 2.5rem;
    background: white;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(24, 144, 255, 0.1);
  }

  .price-tag {
    color: var(--primary-color);
  }

  .popular {
    transform: translateY(-15px);
    border: 2px solid var(--primary-color) !important;
  }

  .popular-badge {
    background: var(--primary-color);
    font-weight: 600;
    letter-spacing: 0.5px;
    padding: 0.5rem 1.25rem;
    border-radius: 20px;
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(24, 144, 255, 0.2);
  }

  .card-body {
    padding: 1rem !important;
  }

  .card-body .py-3 {
    padding-top: 1rem !important;
    padding-bottom: 1rem !important;
  }

  .list-unstyled.mb-4 {
    margin-bottom: 2rem !important;
  }

  .btn.rounded-pill {
    padding: 0.75rem 1rem;
    font-size: 1rem;
    min-width: 140px;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  @media (max-width: 768px) {
    .btn.rounded-pill {
      padding: 0.75rem 1rem;
      min-width: 120px;
    }
  }

  .timeline {
    position: relative;
    max-width: 900px;
    margin: 3rem auto 0;
  }

  .timeline-item {
    padding: 3rem;
    background: white;
    border-radius: 24px;
    margin-bottom: 2.5rem;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(24, 144, 255, 0.1);
    transition: all 0.3s ease;
  }

  .timeline-item:hover {
    box-shadow: var(--hover-shadow);
    border-color: rgba(24, 144, 255, 0.2);
  }

  .timeline-content h4 {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
  }

  .timeline-content .text-muted {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    display: block;
  }

  .timeline-content ul li {
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
    color: var(--text-muted);
    line-height: 1.6;
  }

  .card {
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(0);
    position: relative;
  }

  .card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #3296FA 0%, #1F8CEB 100%);
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: -1;
    border-radius: 16px;
  }

  .card:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 40px rgba(50, 150, 250, 0.1);
  }

  .card:hover::before {
    opacity: 0.05;
  }

  .price-tag {
    position: relative;
    display: inline-block;
  }

  .price-tag .h1 {
    position: relative;
    z-index: 1;
    transition: all 0.3s ease;
  }

  .price-tag::before {
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    background: var(--primary-color);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 0;
    opacity: 0.1;
  }

  .card:hover .price-tag::before {
    width: 120px;
    height: 120px;
  }

  .popular::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, #3296FA 0%, #1F8CEB 100%);
    border-radius: 16px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.5s ease;
  }

  .popular:hover {
    transform: translateY(-25px);
  }

  .popular:hover::after {
    opacity: 0.03;
  }

  .btn-outline-primary {
    position: relative;
    overflow: hidden;
    z-index: 1;
  }

  .btn-outline-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--primary-color);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.5s ease;
    z-index: -1;
  }

  .btn-outline-primary:hover::before {
    width: 300px;
    height: 300px;
  }

  .btn-outline-primary:hover {
    color: white;
    border-color: transparent;
  }

  /* 移动端优化样式 */
  @media (max-width: 768px) {
    .navbar {
      display: none;
    }

    .hero-section {
      min-height: 100vh;
      padding: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      background: linear-gradient(165deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    }

    .hero-content {
      padding: 3rem 1.5rem;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100vh;
      max-width: 100%;
      margin: 0 auto;
    }

    .version-badge {
      background: rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(10px);
      padding: 0.75rem 1.5rem;
      border-radius: 50px;
      font-size: 0.9rem;
      margin-bottom: 2.5rem;
      color: white;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    }

    .version-badge .icon {
      font-size: 1.1rem;
    }

    .hero-title {
      font-size: 2.8rem;
      margin-bottom: 1.5rem;
      background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.9) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

    .hero-text {
      font-size: 1.25rem;
      color: white;
      opacity: 0.95;
      margin-bottom: 2.5rem;
      line-height: 1.6;
      font-weight: 500;
    }

    .hero-buttons {
      display: flex;
      flex-direction: column;
      gap: 1rem;
      width: 100%;
      max-width: 280px;
      margin: 0 auto;
    }

    .hero-buttons .btn {
      width: 100%;
      padding: 1rem 0;
      font-size: 1.1rem;
      font-weight: 600;
      border-radius: 50px;
      transition: all 0.3s ease;
      margin: 0 !important;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
    }

    .hero-buttons .btn-primary {
      background: white;
      color: var(--primary-color);
      box-shadow: 0 4px 15px rgba(50, 150, 250, 0.1);
      border: none;
      transition: all 0.3s ease;
    }

    .hero-buttons .btn-outline {
      background: rgba(255, 255, 255, 0.15);
      border: 2px solid rgba(255, 255, 255, 0.9);
      color: white;
      backdrop-filter: blur(5px);
      transition: all 0.3s ease;
    }

    .hero-buttons .btn-primary:hover {
      background: rgba(255, 255, 255, 0.95);
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
    }

    .hero-buttons .btn-outline:hover {
      background: rgba(255, 255, 255, 0.2);
      transform: translateY(-2px);
    }

    /* 功能区域移动端优化 */
    .features-section {
      padding: 4rem 1.5rem;
    }

    .section-title {
      font-size: 2rem;
      margin-bottom: 1rem;
      color: var(--primary-color);
    }

    .feature-item {
      padding: 1.5rem;
      gap: 1rem;
    }

    .feature-icon {
      width: 48px;
      height: 48px;
      font-size: 20px;
    }

    .feature-content h4 {
      font-size: 1.1rem;
      margin-bottom: 0.5rem;
      color: var(--text-color);
    }

    .feature-content p {
      font-size: 0.95rem;
      line-height: 1.5;
      color: var(--text-muted);
    }

    /* 会员价格卡片移动端优化 */
    .pricing-section .card {
      padding: 2rem;
      margin-bottom: 2rem;
    }

    .price-tag .h1 {
      font-size: 2.5rem;
      font-weight: 700;
    }

    .popular {
      transform: none;
      margin: 2rem 1rem;
    }

    .popular-badge {
      font-weight: 600;
      padding: 0.35rem 1.25rem;
    }

    /* 联系我们区域移动端优化 */
    .contact-section {
      padding: 4rem 1.5rem;
    }

    .contact-buttons {
      display: flex;
      flex-direction: column;
      gap: 1rem;
      max-width: 280px;
      margin: 2rem auto 0;
    }

    .contact-buttons .btn {
      width: 100%;
      padding: 1rem;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
    }

    /* 底部版权区域移动端优化 */
    .footer {
      padding: 3rem 1.5rem 2rem;
    }

    .footer h4 {
      font-size: 1.75rem;
      margin-bottom: 1rem;
    }

    .footer p {
      font-size: 1rem;
      line-height: 1.6;
    }

    .copyright {
      margin-top: 2rem;
      font-size: 0.9rem;
      opacity: 0.9;
    }
  }

  /* 桌面端样式调整 */
  @media (min-width: 769px) {
    .hero-section {
      padding-top: 80px;
    }
  }

  /* 添加移动端动画效果 */
  @media (max-width: 768px) {
    .feature-item {
      transform: translateY(20px);
      opacity: 0;
      animation: fadeInUp 0.6s ease forwards;
    }

    @keyframes fadeInUp {
      to {
        transform: translateY(0);
        opacity: 1;
      }
    }

    .feature-item:nth-child(2) {
      animation-delay: 0.2s;
    }

    .feature-item:nth-child(3) {
      animation-delay: 0.4s;
    }

    /* 添加触摸反馈效果 */
    .btn:active,
    .card:active,
    .feature-item:active {
      transform: scale(0.98);
    }
  }

  /* 调整各个section的上边距 */
  .features-section,
  .pricing-section,
  .contact-section {
    padding-top: 120px !important;
    /* margin-top: -80px; */
  }

  .updates-section {
    padding: 120px 0;
    background: white;
    scroll-margin-top: 80px;  /* 添加滚动偏移量 */
  }

  /* 全局滚动偏移量 */
  .features-section,
  .pricing-section,
  .contact-section {
    scroll-margin-top: 100px;
  }

  /* 更新记录部分的标题和内容间距调整 */
  .updates-section .text-center {
    padding-top: 20px;
  }

  .timeline {
    position: relative;
    max-width: 900px;
    margin: 2rem auto 0;  /* 减小顶部边距 */
  }

  /* 确保首个时间线项目不会被导航栏遮挡 */
  .timeline-item:first-child {
    margin-top: 1rem;
  }

  /* 统一section样式 */
  section {
    min-height: 100vh;
    padding: 6rem 0;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
  }