/* 基础样式 */
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: 'Roboto', 'Inter', sans-serif;
      }
      
      body {
        min-height: 100vh;
        color: #333;
        background-color: #fff;
      }
      
      .container {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
      }
      
      /* 导航栏样式 */
      header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 50;
        transition: all 0.3s ease;
        padding: 15px 0;
      }
      
      header.scrolled {
        background-color: rgba(255, 255, 255, 0.9);
        backdrop-filter: blur(10px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        padding: 10px 0;
      }
      
      .nav-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
      }
      
      .logo {
        display: flex;
        align-items: center;
        gap: 10px;
      }
      
      .logo-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
/*        background-color: #ef4444;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-weight: bold;
        font-size: 18px */;
		background-image: url('../img/logo.png');
		background-size: cover;
      }
      
      .logo-text {
        font-size: 20px;
        font-weight: bold;
        color: #ef4444;
      }
      
      nav ul {
        display: flex;
        gap: 32px;
        list-style: none;
      }
      
      nav a {
        text-decoration: none;
        color: #4b5563;
        font-weight: 500;
        transition: color 0.3s ease;
      }
      
      nav a:hover {
        color: #ef4444;
      }
      
      /* 主内容区域样式 */
      main {
        padding-top: 120px;
        padding-bottom: 80px;
      }
      
      /* 英雄区域样式 */
      .hero {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 40px;
        margin-bottom: 80px;
        margin-top: 80px;
      }
      
      @media (min-width: 768px) {
        .hero {
          flex-direction: row;
          justify-content: space-between;
        }
      }
      
      .hero-content {
        flex: 1;
        max-width: 600px;
      }
      
      .badge {
        display: inline-block;
        padding: 4px 16px;
        border-radius: 999px;
        background-color: #fee2e2;
        color: #dc2626;
        font-size: 14px;
        font-weight: 500;
        margin-bottom: 16px;
      }
      
      .hero-title {
        font-size: 40px;
        font-weight: bold;
        color: #111827;
        line-height: 1.2;
        margin-bottom: 16px;
      }
      
      .hero-title span {
        color: #ef4444;
      }
      
      .hero-description {
        font-size: 18px;
        color: #6b7280;
        margin-bottom: 32px;
        max-width: 500px;
      }
      
      .download-buttons {
        display: flex;
        flex-direction: column;
        gap: 16px;
        margin-bottom: 24px;
      }
      
      @media (min-width: 640px) {
        .download-buttons {
          flex-direction: row;
        }
      }
      
      .download-button {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 12px 24px;
        border-radius: 12px;
        font-weight: 500;
        text-decoration: none;
        transition: all 0.3s ease;
        transform: translateY(0);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
      }
      
      .download-button:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
      }
      
      .android-button {
        background-color: #ef4444;
        color: white;
      }
      
      .android-button:hover {
        background-color: #dc2626;
      }
      
      .ios-button {
        background-color: #1f2937;
        color: white;
      }
      
      .ios-button:hover {
        background-color: #111827;
      }
      
      .button-icon {
        font-size: 24px;
      }
      
      .button-text {
        text-align: left;
      }
      
      .button-subtext {
        font-size: 12px;
        opacity: 0.8;
      }
      
      .button-maintext {
        font-weight: bold;
        font-size: 16px;
      }
      
      .security-info {
        display: flex;
        align-items: center;
        gap: 8px;
        color: #6b7280;
        font-size: 14px;
      }
      
      .security-icon {
        color: #10b981;
      }
      
      .hero-image {
        flex: 1;
        display: flex;
        justify-content: center;
      }
      
      .app-screenshot {
        position: relative;
        max-width: 300px;
        border-radius: 32px;
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        transform: rotate(2deg);
        transition: transform 0.5s ease;
        z-index: 10;
      }
      
      .app-screenshot:hover {
        transform: rotate(0);
      }
      
      .image-background {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.2));
        border-radius: 32px;
        filter: blur(32px);
        z-index: -1;
      }
      
      /* 功能特点区域样式 */
      .features {
        padding: 80px 0;
      }
      
      .section-title {
        text-align: center;
        font-size: 32px;
        font-weight: bold;
        color: #111827;
        margin-bottom: 8px;
      }
      
      .section-title span {
        color: #ef4444;
      }
      
      .section-description {
        text-align: center;
        color: #6b7280;
        max-width: 700px;
        margin: 0 auto 48px;
      }
      
      .features-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 24px;
      }
      
      @media (min-width: 768px) {
        .features-grid {
          grid-template-columns: repeat(3, 1fr);
        }
      }
      
      .feature-card {
        padding: 24px;
        border-radius: 16px;
        background-color: white;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
        transition: all 0.3s ease;
      }
      
      .feature-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
      }
      
      .feature-icon {
        width: 56px;
        height: 56px;
        border-radius: 16px;
        background-color: #fee2e2;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #ef4444;
        font-size: 24px;
        margin-bottom: 16px;
      }
      
      .feature-title {
        font-size: 20px;
        font-weight: bold;
        color: #111827;
        margin-bottom: 8px;
      }
      
      .feature-description {
        color: #6b7280;
        font-size: 16px;
      }
      
      /* CTA区域样式 */
      .cta-section {
        padding: 80px 0;
        background: linear-gradient(90deg, #ef4444, #dc2626);
        border-radius: 32px;
        color: white;
        margin: 80px 0;
        position: relative;
        overflow: hidden;
      }
      
      .cta-background {
        position: absolute;
        top: 0;
        right: 0;
        width: 33%;
        height: 100%;
        background-color: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        transform: skewX(12deg) translateX(20%);
      }
      
      .cta-content {
        position: relative;
        z-index: 10;
        max-width: 800px;
        margin: 0 auto;
        text-align: center;
        padding: 0 20px;
      }
      
      .cta-title {
        font-size: 36px;
        font-weight: bold;
        margin-bottom: 16px;
      }
      
      .cta-description {
        font-size: 18px;
        color: #ffedd5;
        margin-bottom: 32px;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
      }
      
      .cta-buttons {
        display: flex;
        flex-direction: column;
        gap: 16px;
        justify-content: center;
      }
      
      @media (min-width: 640px) {
        .cta-buttons {
          flex-direction: row;
        }
      }
      
      .cta-button {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 12px 32px;
        border-radius: 12px;
        font-weight: 500;
        text-decoration: none;
        transition: all 0.3s ease;
        transform: translateY(0);
      }
      
      .cta-button:hover {
        transform: translateY(-3px);
      }
      
      .primary-cta {
        background-color: white;
        color: #dc2626;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
      }
      
      .primary-cta:hover {
        background-color: #f9fafb;
      }
      
      .secondary-cta {
        background-color: transparent;
        color: white;
        border: 2px solid rgba(255, 255, 255, 0.8);
      }
      
      .secondary-cta:hover {
        background-color: rgba(255, 255, 255, 0.1);
      }
      
      /* 页脚样式 */
      footer {
        background-color: #1f2937;
        color: white;
        padding: 48px 0;
      }
      
      .footer-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 24px;
      }
      
      .footer-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 16px;
      }
      
      .social-links {
        display: flex;
        gap: 24px;
        margin-bottom: 16px;
      }
      
      .social-link {
        color: #9ca3af;
        font-size: 24px;
        transition: color 0.3s ease;
      }
      
      .social-link:hover {
        color: white;
      }
      
      .copyright {
        color: #9ca3af;
        font-size: 14px;
      }