/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a {
    text-decoration: none;
}
body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
    min-height: 100vh;
    min-width: 1400px;
    background: url('../images/bottom-bg.png') no-repeat bottom center #fff;
}

/* 容器样式 */
.container {
    max-width: 1920px;
    margin: 0 auto;
    padding: 0 30px;
}

/* 英雄区域样式 */
.hero {
    background: url('../images/top-bg.png') no-repeat center center;
    background-size: cover;
    padding: 45px 0 54px;
}

.hero-header {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo {
    position: absolute;
    top: -20px;
    left: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    width: 46px;
    height: 46px;
}

.logo span {
    font-size: 20px;
    color: #1A1A1A;
    font-weight: 400;
}

.hero-title {
    position: relative;
    display: flex;
    align-items: center;
    letter-spacing: 4px;
    gap: 12px;
}

.hero-title h1 {
    font-size: 48px;
    color: #1A1A1A;
    margin: 0;
    font-weight: 700;

}

.version-tag {
    position: absolute;
    right: -150px;
    top: -14px;
    background: linear-gradient(90deg, #6934FF 0%, #F8239E 100%);

    color: white;
    border: none;
    width: 150px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-size: 20px;
    font-weight: 700;
    border-radius: 20px 20px 20px 0;
}

.hero-subtitle {
    text-align: center;
    margin-bottom: 20px;
    letter-spacing: 4px;
}

.hero-subtitle p {
    font-size: 20px;
    color: #1A1A1A;
    margin: 0;
}

.feature-tabs {
    display: flex;
    justify-content: center;
    gap: 0;
}

.tab-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 220px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    border-radius: 20px 20px 0 0;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 24px;
    color: #fff;
    font-weight: bold;
    box-shadow: 0px -4px 10px 0px #00000040;
}

.tab-item img {
    max-width: 30px;
}

.tab-item.active {
    background: #09AD56;
    color: white;
}

.tab-item:not(.active) {
    background: rgba(255,255,255,0.9);
    color: #1A1A1A;
}

.tab-item:hover:not(.active) {
    background: #09AD56;
    color: #fff;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    column-gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.software-preview {
    display: flex;
    justify-content: center;
}

.software-preview img {
    width: 100%;
    width: 600px;
    border-radius: 18px;
    transition: all 0.3s ease;
}

.software-preview img:hover {
}

.info-panel {
  width: 520px;
  text-align: center;
}

.info-panel h2 {
    font-size: 40px;
    color: #1a1a1a;
    margin-bottom: 26px;
    font-weight: 700;
}

.info-panel .description {
    font-size: 20px;
    color: #1A1A1A;
    margin-bottom: 52px;
    font-weight: 400;
}

.download-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.main-download-btn {
    margin: 0 auto;
    display: flex;
    align-items: center;
    width: 320px;
    height: 76px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(90deg, #FFB254 0%, #FF901E 100%);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 36px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    align-self: flex-start;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 8px 20px rgba(255, 144, 30, 0.4);
}

.main-download-btn img {
    width: 34px;
    height: 36px;
    position: relative;
    top: 2px;
}

.main-download-btn:hover {
    background: linear-gradient(90deg, #FF5552 0%, #FF901E 100%);
}

.system-requirements {
    justify-content: center;
    display: flex;
    gap: 20px;
    margin-top: 5px;
}

.system-requirements span {
    font-size: 16px;
    color: #666666;
    font-weight: 400;
}

/* 头部区域 */
.header {
    padding: 30px 0 40px 0;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.logo {
    position: absolute;
    top: -20px;
    left: 0;
    display: flex;
    align-items: center;
}

.logo img {
    height: 35px;
    width: auto;
}

.header-title {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-title h1 {
    font-size: 32px;
    font-weight: 700;
    color: #1976D2;
    margin: 0;
}

.version-btn {
    background: linear-gradient(45deg, #E91E63, #AD1457);
    color: white;
    border: none;
    padding: 8px 16px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 15px;
    cursor: pointer;
}

.header-subtitle {
    text-align: center;
    margin-bottom: 30px;
}

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

.feature-nav {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.feature-nav .nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: #ffffff;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border: 1px solid #e0e0e0;
    justify-content: center;
}

.feature-nav .nav-item:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.feature-nav .nav-item.active {
    background: #4CAF50;
    border-color: #4CAF50;
    color: white;
}

.feature-nav .nav-item.active span {
    color: white;
}

.feature-nav .nav-item img {
    width: 20px;
    height: 20px;
}

.feature-nav .nav-item span {
    font-size: 14px;
    color: #333;
    font-weight: 500;
    white-space: nowrap;
}

/* 主内容区域 */
.main-content {
    padding: 40px 0 60px 0;
}

.content-wrapper {
    display: flex;
    align-items: center;
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.content-left {
    flex: 1.5;
}

.content-right {
    flex: 1;
}

.product-interface {
    text-align: left;
}

.product-interface img {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.product-info {
    text-align: center;
}

.product-info h2 {
    font-size: 32px;
    font-weight: 700;
    color: #333;
    margin-bottom: 25px;
    line-height: 1.2;
}

.description {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 35px;
    text-align: left;
}

.download-area {
    margin-top: 40px;
    text-align: center;
}
@keyframes spread {
    0% {
      transform: scale(0);
      -webkit-transform: scale(0);
      -moz-transform: scale(0);
      transform: scale(0);
      opacity: 1;
    }
    100% {
      transform: scale(2);
      -webkit-transform: scale(2);
      -moz-transform: scale(2);
      transform: scale(2);
      opacity: 0;
    }
  }
.round-animation {
    position: absolute;
    top: 50%;
    left: 50%;
    background: rgba(255, 255, 255, 0.2);
    width: 280px;
    height: 280px;
    border-radius: 50%;
    margin-left: -140px;
    margin-top: -140px;
    animation: spread 1.5s infinite both;
  }
  a {
    position: relative;
    overflow: hidden;
  }
.download-btn {
    background: linear-gradient(45deg, #FF9800, #FF6F00);
    color: white;
    border: none;
    width: 320px;
    height: 76px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    box-shadow: 0 8px 20px rgba(255, 152, 0, 0.4);
}

.download-btn img {
    width: 34px;
    height: 36px;
    position: relative;
    top: 2px;
    filter: brightness(0) invert(1);
}

.download-btn:hover {
    transform: translateY(-3px);
    background: linear-gradient(90deg, #FF5552 0%, #FF901E 100%);

}

.system-info {
    margin-top: 20px;
}

.system-info p {
    font-size: 13px;
    color: #999;
    margin: 0;
}

/* 功能特性区域 */
.features {
    padding: 30px 0 80px;
    background: #fff;
}

.section-title {
    font-size: 40px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 37px;
    color: #1A1A1A;
}

.problem-list {
    width: 1200px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin: 0 auto 40px;
}

.problem-item {
    width: 590px;
    text-align: center;
    transition: transform 0.3s ease;
}

.problem-item:hover {
    transform: translateY(-3px);
}

.problem-icon {
    width: 100%;
}

.problem-icon img {
    width: 100%;
    height: auto;
    border-radius: 12px;
}

.solution-section {
    background: #f8f9fa;
    padding: 60px 40px;
    border-radius: 20px;
}

.solution-content {
    display: flex;
    gap: 60px;
    align-items: center;
    margin-bottom: 40px;
}

.solution-left {
    flex: 1;
}

.solution-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.solution-left h3 {
    font-size: 28px;
    margin-bottom: 15px;
    color: #333;
}

.solution-left p {
    font-size: 16px;
    color: #666;
    margin-bottom: 30px;
}

.before-after {
    display: flex;
    align-items: center;
    gap: 20px;
}

.before, .after {
    text-align: center;
}

.before img, .after img {
    width: 120px;
    height: 80px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 10px;
}

.arrow {
    width: 40px;
    height: 20px;
}

.feature-box {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.feature-icon {
    margin-bottom: 20px;
}

.feature-icon img {
    width: 60px;
    height: 60px;
}

.feature-box h4 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.feature-box p {
    color: #666;
    margin-bottom: 20px;
}

.learn-more {
    background: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
}

.feature-illustration img {
    width: 100%;
    max-width: 300px;
}
.hero-content-swiper {
    overflow: hidden;
}
.download-center {
    text-align: center;
}

/* 产品对比区域 */
.comparison {
    padding: 60px 0;
    background: #F6F9FE;
}

.comparison .section-title {
    color: #1A1A1A;
    font-size: 40px;
    font-weight: bold;
    margin-bottom: 50px;
}

.comparison-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    margin-bottom: 30px;
}

.comparison-before,
.comparison-after {
    text-align: center;
}

.comparison-before h3,
.comparison-after h3 {
    font-size: 24px;
    color: #1A1A1A;
    margin-bottom: 15px;
    font-weight: bold;
}

.comparison-before img,
.comparison-after img {
    width: 100%;
    max-width: 350px;
    height: auto;
    border-radius: 15px;
}

.comparison-arrow {
    width: 60px;
    margin: 46px 0 0;
}
.small-btn {
    width: 280px;
    height: 58px;
    font-size: 32px;
}

/* 产品优势区域 */
.advantages {
    padding: 100px 0;
}

.advantages-grid {
    width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 60px;
}

.advantage-item {
    text-align: left;
    padding: 25px 20px;
    background: #ffffff;
    border-radius: 12px;
    transition: transform 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    border: 1px solid #f0f0f0;
}

.advantage-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.advantage-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.advantage-icon {
    margin: 0;
}

.advantage-icon img {
    display: block;
    width: 40px;
    height: 40px;
}

.advantage-item h4 {
    font-size: 24px;
    margin: 0;
    color: #1A1A1A;
    font-weight: 700;
}

.advantage-item p {
    color: #1A1A1A;
    line-height: 1.5;
    font-size: 16px;
    min-height: 48px;
    margin-bottom: 12px;
}

.use-link {
    color: #006AFE;
    text-decoration: none;
    font-size: 16px;
    font-weight: 400;
    transition: color 0.3s ease;
}

.use-link:hover {
    color: #357ABD;
}

/* 选择理由区域 */
.why-choose {
    padding: 0 0 50px;
}

.why-choose .section-title {
    color: #333;
    margin-bottom: 40px;
    text-align: center;
}

.reasons-grid {
    display: flex;
    justify-content: center;
    column-gap: 20px;
}

.reason-item {
    text-align: center;
    padding: 25px 20px 32px;
    background: #ffffff;
    border-radius: 15px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    border: 1px solid #f0f0f0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    max-width: 285px;
}

.reason-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.reason-icon {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    border-radius: 50%;
}



.reason-icon img {
    width: 60px;
    height: 60px;
}

.reason-item h4 {
    font-size: 24px;
    margin-bottom: 27px;
    color: #1A1A1A;
    font-weight: 700;
}

.reason-item p {
    color: #1A1A1A;
    line-height: 24px;
    font-size: 16px;
    font-weight: 400;
    text-align: left;
}

/* 平台安全认证区域 */
.platform {
    padding-bottom: 45px;
}

.platform-title {
    text-align: center;
    font-size: 20px;
    color: #18285E;
    margin-bottom: 28px;
    font-weight: 400;
}

.platform-certifications {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 50px;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 15px;
    width: 200px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    border-radius: 10px;
}

.cert-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.cert-name {
    font-size: 20px;
    color: #18285E;
    font-weight: 400;
}

/* 悬浮底部下载栏 */
.floating-bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #ffffff;
    box-shadow: 0px -4px 4px 0px #00000040;
    z-index: 1000;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    height: 100px;
}

.floating-bottom.show {
    transform: translateY(0);
}

.floating-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
}

.floating-left {
    display: flex;
    align-items: center;
    gap: 10px;
}
.tag-list {
    display: flex;
    align-items: center;
    column-gap: 10px;
}
.tag-list .tag-item {
   width: 100px;
   height: 26px;
   display: flex;
   align-items: center;
   justify-content: center;
   background: #f0f0f0;
   border-radius: 6px;
   font-size: 16px;
   color: #fff;
   background-color: #FCC136;
}
.tag-list .tag-item:last-child {
    background-color: #09AD56;
}
.floating-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-icon img {
    width: 70px;
    height: 70px;
    object-fit: contain;
}

.floating-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.floating-info h4 {
    font-size: 32px;
    color: #1A1A1A;
    margin: 0 0 7px 0;
    font-weight: 700;
    line-height: 36px;
}

.floating-details {
    padding-left: 40px;
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 2px;
}

.floating-details span {
    font-size: 16px;
    color: #1A1A1A;
    line-height: 28px;
    white-space: nowrap;
}

.floating-right {
    flex-shrink: 0;
}

.floating-download-btn {
    border: 0.2px solid;
    width: 280px;
    height: 58px;
    gap: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(90deg, #FFB355 0%, #FFA138 100%);    
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 32px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    text-decoration: none;
    box-shadow: 0 6px 16px rgba(255, 179, 85, 0.4);
}
.floating-download-btn img {
    width: 32px;
    position: relative;
    top: 2px;
}

.floating-download-btn:hover {
    background: linear-gradient(135deg, #ff6b00 0%, #ff5500 100%);
    box-shadow: 0 4px 12px rgba(255, 138, 0, 0.4);
    transform: translateY(-1px);
}

/* 底部 */
.footer {
    background: #1E293B;
    color: white;
    padding: 20px 0;
    text-align: center;
}

.footer-content p {
    font-size: 24px;
    color: #fff;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .container {
        max-width: 1200px;
        padding: 0 15px;
    }
    
    .hero-content {
        gap: 40px;
    }
    
    .hero-title h1 {
        font-size: 40px;
    }
    
    .section-title {
        font-size: 32px;
    }
}

@media (max-width: 768px) {
    .nav-wrapper {
        flex-direction: column;
        gap: 20px;
    }
    
    .nav {
        gap: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-title h1 {
        font-size: 32px;
    }
    
    .subtitle {
        font-size: 18px;
    }
    
    .feature-tabs {
        justify-content: center;
    }
    
    .tab-item {
        min-width: 100px;
        padding: 15px;
    }
    
    .solution-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .comparison-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .comparison-arrow {
        transform: rotate(90deg);
    }
    
    .before-after {
        justify-content: center;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 40px;
    }
    
    .advantages-grid,
    .reasons-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-details {
        grid-template-columns: 1fr;
    }
    
    .feature-detail-item {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .hero-title h1 {
        font-size: 28px;
    }
    
    .subtitle {
        font-size: 16px;
    }
    
    .download-btn {
        padding: 15px 30px;
        font-size: 16px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .problem-list {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .solution-section {
        padding: 40px 20px;
    }
    
    .feature-tabs {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tab-item {
        min-width: auto;
    }
}
.software-preview img,
.problem-icon img {
    transition: all 0.25s ease;
    transform-origin: center;
}
.software-preview img:hover,
.problem-icon img:hover {
    transform: scale(1.05) translateY(-5px);
}