/* 通用重置 */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Microsoft YaHei', Arial, sans-serif; background: #fff; color: #222; }


/* 右侧固定操作按钮 */
.side-actions {
  position: fixed;
  right: 20px;
  top: 40%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 9999;
}
.side-actions .side-btn {
  background: #f47920;
  color: #fff;
  text-decoration: none;
  padding: 14px 20px;
  border-radius: 999px;
  box-shadow: 0 6px 18px rgba(244, 121, 32, 0.3);
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  white-space: nowrap;
  min-width: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.side-actions .side-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(244, 121, 32, 0.4);
  background: #ff8a34;
}
.side-actions .side-btn:active {
  transform: translateY(0);
}

@media (max-width: 900px) {
  .side-actions {
    right: 12px;
    top: auto;
    bottom: 20px;
    transform: none;
  }
  .side-actions .side-btn {
    padding: 12px 16px;
    font-size: 14px;
    min-width: 140px;
  }
}

/* Banner */
.banner {
  position: relative;
  width: 100vw;
  background: #222;
  overflow: hidden;
  padding: 0;
  height: 660px;
  min-height: unset;
  display: block;
}
.banner-bg {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  position: absolute;
  left: 0;
  top: 0;
  background: #222;
  margin: 0;
  z-index: 1;
  transition: width 0.3s, height 0.3s;
}
.banner-content {
  position: absolute;
  top: clamp(24px, 5vw, 100px);   /* 最大100px，最小24px */
  left: clamp(24px, 8vw, 180px);  /* 最大180px，最小24px */
  z-index: 2;
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0;
  padding: 0;
  width: auto;
  max-width: 60vw;
}
.banner-title-en {
    font-size: clamp(28px, 3vw, 64px); /* 最大64px，最小28px */
    font-weight: 700;
    margin-bottom: 2vw;
    font-style: italic;
}
.banner-title-cn {
    font-size: clamp(18px, 2.2vw, 36px); /* 最大36px，最小18px */
    font-weight: 700;
    margin-bottom: 0.5vw;
}
.banner-title-desc {
    font-size: clamp(10px, 1vw, 20px); /* 最大20px，最小10px */
    font-weight: 400;
    margin-bottom: 1vw;
    line-height: 2.5;
}
@media (max-width: 900px) {
  .banner-title-desc {
    font-size: clamp(9px, 1.5vw, 16px);
  }
}
@media (max-width: 600px) {
  .banner-title-desc {
    font-size: clamp(8px, 2vw, 12px);
  }
}

/* 视频区块 */
.video-section {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f5f5f5;
    padding: 48px 0;
}
.video-bg {
    width: 600px;
    height: 340px;
    background: #ccc;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.video-play {
    width: 80px;
    height: 80px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}
.video-play::after {
    content: '';
    display: block;
    width: 0;
    height: 0;
    border-left: 32px solid #bbb;
    border-top: 20px solid transparent;
    border-bottom: 20px solid transparent;
    position: absolute;
    left: 24px;
    top: 20px;
}


/* 视频区块样式开始 */
.video-section {
  position: relative;
  width: 100vw;
  min-height: 600px;
  background: #fff;
  overflow: hidden;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: 80px;
  padding-bottom: 200px;
  margin-top: 60px;
}
.gear {
  position: absolute;
  z-index: 1;
}
.gear-left {
  left: -110px;
  top: 60px;
  width: 300px;
  height: auto;
}
.gear-right {
  right: -160px;
  bottom: 60px;
  width: 300px;
  height: auto;
}
.video-placeholder {
    width: 80vw;
    max-width: 1200px;
    aspect-ratio: 16/9;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: url('./app_images/应用界面截图.png') center center / cover no-repeat;
}
.video-placeholder video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 12px;
    background: #000;
}
.play-btn {
  width: 100px;
  height: 100px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
  transition: transform 0.2s;
  z-index: 3;
}
.play-btn:hover {
  transform: translate(-50%, -50%) scale(1.18);
}
.play-triangle {
  transition: fill 0.2s;
}
.play-btn:hover .play-triangle {
  fill: #fff;
}
.video-desc {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: none;
  box-shadow: none;
  margin-top: 80px;
  gap: 40px;
}
.video-desc-title {
  font-size: 2rem;
  font-weight: bold;
  color: #222;
  margin-bottom: 18px;
  text-align: center;
}
.video-desc-text {
  font-size: 1.1rem;
  color: #666;
  line-height: 1.8;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

/* 功能模块样式（整合到video-desc中） */
.video-desc .feature-modules-inner {
  width: 100%;
  max-width: 1200px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 40px;
}

.video-desc .feature-module {
  background: #f47920;
  padding: 50px 30px;
  border-radius: 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  min-height: 350px;
  box-shadow: 0 8px 32px rgba(244, 121, 32, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-desc .feature-module:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(244, 121, 32, 0.3);
}

.video-desc .feature-module-icon {
  width: 70px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

.video-desc .feature-module-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.video-desc .feature-module-title {
  font-size: 1.6rem;
  font-weight: bold;
  color: #fff;
  margin: 0;
  line-height: 1.2;
}

.video-desc .feature-module-desc {
  font-size: 0.95rem;
  color: #fff;
  line-height: 1.7;
  text-align: justify;
  margin: 0;
  flex: 1;
  display: flex;
  align-items: center;
}
.video-title {
  font-size: 24px;
  font-weight: bold;
  color: #222;
  margin-bottom: 4px;
}
.video-subtitle {
  font-size: 14px;
  color: #666;
  margin-bottom: 32px;
  margin-left: 2px;
}
.video-features {
  display: flex;
  flex-direction: column;
  gap: 40px;
  width: 100%;
}
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 18px;
}
.feature-icon {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  margin-top: 2px;
}
.feature-text {
  flex: 1;
}
.feature-title {
  font-size: 17px;
  font-weight: bold;
  color: #333;
  margin-bottom: 4px;
}
.feature-desc {
  font-size: 15px;
  color: #444;
  line-height: 1.7;
}

.video-divider {
    width: 40px;
    height: 10px;
    background: #f47920;
    border-radius: 0px;
    margin: 0 0 80px 0;
  }

@media (max-width: 900px) {
  .video-placeholder, .video-desc {
    width: 90vw;
    max-width: 98vw;
  }
  .gear-left, .gear-right {
    width: 100px;
  }
  .video-title {
    font-size: 18px;
  }
  .feature-title {
    font-size: 15px;
  }
  .feature-desc {
    font-size: 13px;
  }
}
/* 视频区块样式结束 */

#main-video {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 12px;
  display: none;
}

/* section1.2 区块样式 */
.section1-2 {
  position: relative;
  width: 100vw;
  min-height: 520px;
  background: #D9CCBF;
  overflow-x: auto;
  overflow-y: visible;
  padding: 0 0 60px 0;
}
.section1-2-bg {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.section1-2-wave {
  width: 100vw;
  max-width: 100vw;
  min-width: 100vw;
  height: auto;
  display: block;
}
.section1-2-inner {
  position: relative;
  z-index: 2;
  width: 1200px;
  max-width: 1200px;
  min-width: 1200px;
  margin: 0 auto;
  padding: 48px 0 0 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

@media (max-width: 900px) {
  .section1-2-inner {
    width: 100vw;
    min-width: 0;
    max-width: 100vw;
    padding: 32px 0 0 0;
  }
  .section1-2-features {
    flex-direction: column;
    gap: 32px;
    align-items: center;
  }
  .s12-feature {
    flex-direction: column;
    align-items: center;
    width: 100vw;
    max-width: 100vw;
  }
  .s12-icon-wrap {
    margin: 0 auto 18px auto;
  }
  .s12-icon {
    width: 60px;
    height: 60px;
  }
  .s12-feature-title {
    height: auto;
    align-items: flex-end;
  }
  .s12-feature-desc {
    width: 90vw;
    height: auto;
    min-height: 60px;
    align-items: flex-start;
    text-align: left;
    padding-top: 18px;
  }
}
.section1-2-title {
  font-size: 28px;
  font-weight: bold;
  color: #222;
  text-align: center;
  margin-bottom: 8px;
  margin-top: 12px;
}
.section1-2-subtitle {
  font-size: 15px;
  color: #444;
  text-align: center;
  margin-bottom: 48px;
}
.section1-2-features {
  display: flex;
  flex-direction: row;
  justify-content: center;
  gap: 48px;
  width: 100%;
  margin-top: 12px;
  align-items: flex-start;
}
.s12-feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  width: 330px;
  max-width: 100vw;
}
.s12-icon-wrap {
  margin: 0 auto 18px auto;
}
.s12-icon {
  max-width: 170px;
  max-height: 170px;
  width: 170px;
  height: 170px;
  display: block;
  margin: 0 auto;
  object-fit: contain;
}
.s12-feature-desc {
  font-size: 13px;
  color: #444;
  background: #fff;
  border-radius: 12px;
  padding: 18px 18px 14px 18px;
  margin-top: 8px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  width: 330px;
  height: 148px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  text-align: left;
  padding-top: 18px;
  line-height: 1.9;
}
.s12-feature-title {
  font-size: 15px;
  font-weight: bold;
  color: #222;
  text-align: left;
  margin-bottom: 8px;
  margin-top: 0;
  height: auto;
  display: block;
}

@media (max-width: 900px) {
  .section1-2-inner {
    padding: 32px 2vw 0 2vw;
  }
  .section1-2-features {
    flex-direction: column;
    gap: 32px;
    align-items: center;
  }
  .s12-feature {
    flex-direction: column;
    align-items: center;
    width: 100vw;
    max-width: 100vw;
  }
  .s12-icon-wrap {
    margin: 0 auto 18px auto;
  }
  .s12-icon {
    width: 60px;
    height: 60px;
  }
  .s12-feature-title {
    height: auto;
    align-items: flex-end;
  }
  .s12-feature-desc {
    width: 90vw;
    height: auto;
    min-height: 60px;
    align-items: flex-start;
    text-align: left;
    padding-top: 18px;
  }
}

/* section1.3 区块样式 */
.section1-3 {
  width: 100vw;
  background: #fff;
  padding: 64px 0 80px 0;
  box-sizing: border-box;
}
.section1-3-title-group {
  text-align: center;
  margin-bottom: 48px;
}
.section1-3-title {
  font-size: 28px;
  font-weight: bold;
  color: #222;
  margin-bottom: 8px;
}
.section1-3-subtitle {
  font-size: 15px;
  color: #666;
  margin-bottom: 18px;
}
.section1-3-divider {
  width: 50px;
  height: 8px;
  background: #f47920;
  border-radius: 0;
  margin: 0 auto;
}
.section1-3-cards {
  display: flex;
  flex-direction: row;
  justify-content: center;
  gap: 48px;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
}
.s13-card {
  position: relative;
  background: #363636;
  border-radius: 28px;
  width: 340px;
  min-height: 340px;
  padding: 36px 32px 36px 32px;
  box-sizing: border-box;
  color: #fff;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: flex-start;
}
.s13-card:first-child .s13-card-icon {
  opacity: 1;
}
.s13-card:nth-child(2) .s13-card-icon {
  opacity: 1;
}
.s13-card:nth-child(3) .s13-card-icon {
  opacity: 1;
}
.s13-card:nth-child(4) .s13-card-icon {
  opacity: 1;
}
.s13-card-title {
  font-size: 15px;
  font-weight: bold;
  color: #fff;
  background: #f47920;
  border-radius: 16px;
  padding: 8px 22px;
  margin-bottom: 18px;
  display: inline-block;
  white-space: nowrap;
}
.s13-card-desc {
  font-size: 14px;
  color: #fff;
  line-height: 2.2;
  z-index: 2;
}
.s13-card-icon {
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 200px;
  height: 200px;
  opacity: 0.12;
  z-index: 1;
  pointer-events: none;
}

@media (max-width: 900px) {
  .banner-content {
    top: clamp(12px, 16vw, 60px);
    left: clamp(12px, 4vw, 64px);
    max-width: 90vw;
  }
  .banner-title-en {
    font-size: clamp(20px, 5vw, 40px);
  }
  .banner-title-cn {
    font-size: clamp(14px, 3.5vw, 24px);
  }
  .banner-title-desc {
    font-size: 2vw;
  }
  .video-section {
    padding-top: 32px;
    padding-bottom: 80px;
  }
  .video-placeholder, .video-desc {
    width: 98vw;
    max-width: 100vw;
  }
  .video-title {
    font-size: 18px;
  }
  .feature-title {
    font-size: 15px;
  }
  .feature-desc {
    font-size: 13px;
  }
  .section1-2-inner, .section1-3-cards {
    width: 100vw;
    min-width: 0;
    max-width: 100vw;
    padding: 0 2vw;
    flex-direction: column;
    gap: 32px;
    align-items: center;
  }
  .s12-feature, .s13-card {
    width: 98vw;
    max-width: 100vw;
  }
  .s12-icon, .s13-card-icon {
    width: 60px;
    height: 60px;
  }
  .section1-2-title, .section1-3-title {
    font-size: 20px;
  }
  .section1-2-subtitle, .section1-3-subtitle {
    font-size: 13px;
  }
  
  /* 功能模块响应式 */
  .video-desc .feature-modules-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .video-desc .feature-module {
    padding: 40px 24px;
    min-height: 320px;
  }
  
  .video-desc .feature-module-icon {
    width: 60px;
    height: 60px;
  }
  
  .video-desc .feature-module-title {
    font-size: 1.4rem;
  }
  
  .video-desc .feature-module-desc {
    font-size: 0.9rem;
  }
}

@media (max-width: 600px) {
  .banner-content {
    top: clamp(4px, 24vw, 32px);
    left: clamp(8px, 4vw, 24px);
    max-width: 96vw;
  }
  .banner-title-en {
    font-size: clamp(16px, 7vw, 28px);
  }
  .banner-title-cn {
    font-size: clamp(10px, 5vw, 16px);
  }
  .banner-title-desc {
    font-size: 3vw;
  }
  .video-title {
    font-size: 15px;
  }
  .feature-title {
    font-size: 13px;
  }
  .feature-desc {
    font-size: 11px;
  }
  .section1-2-title, .section1-3-title {
    font-size: 16px;
  }
  .section1-2-subtitle, .section1-3-subtitle {
    font-size: 11px;
  }
  
  /* 功能模块小屏幕响应式 */
  .video-desc .feature-modules-inner {
    gap: 20px;
  }
  
  .video-desc .feature-module {
    padding: 32px 20px;
    min-height: 300px;
    gap: 16px;
  }
  
  .video-desc .feature-module-icon {
    width: 50px;
    height: 50px;
  }
  
  .video-desc .feature-module-title {
    font-size: 1.2rem;
  }
  
  .video-desc .feature-module-desc {
    font-size: 0.85rem;
  }
}

/* 技术优势区块样式 */
.tech-advantages {
    width: 100%;
    background: #f5f5f5;
    padding: 80px 0;
}

.tech-advantages-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}

.tech-advantages-header {
    margin-bottom: 60px;
}

.tech-advantages-title {
    font-size: 2.5rem;
    font-weight: bold;
    color: #222;
    margin-bottom: 8px;
}

.tech-advantages-subtitle {
    font-size: 1.2rem;
    color: #222;
    font-weight: normal;
}

.tech-advantages-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.advantage-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.advantage-icon {
    flex-shrink: 0;
    margin-top: 8px;
}

.advantage-circle {
    width: 16px;
    height: 16px;
    border: 2px solid #f47920;
    border-radius: 50%;
    background: transparent;
}

.advantage-text {
    flex: 1;
}

.advantage-title {
    font-size: 1.3rem;
    font-weight: bold;
    color: #222;
    margin-bottom: 12px;
    line-height: 1.4;
}

.advantage-desc {
    font-size: 1rem;
    color: #222;
    line-height: 1.8;
    text-align: justify;
}

/* 响应式设计 */
@media (max-width: 900px) {
    .tech-advantages {
        padding: 60px 0;
    }
    
    .tech-advantages-inner {
        padding: 0 20px;
    }
    
    .tech-advantages-title {
        font-size: 2rem;
    }
    
    .tech-advantages-subtitle {
        font-size: 1rem;
    }
    
    .advantage-item {
        gap: 16px;
    }
    
    .advantage-title {
        font-size: 1.1rem;
    }
    
    .advantage-desc {
        font-size: 0.95rem;
    }
}

@media (max-width: 600px) {
    .tech-advantages {
        padding: 40px 0;
    }
    
    .tech-advantages-inner {
        padding: 0 16px;
    }
    
    .tech-advantages-title {
        font-size: 1.8rem;
    }
    
    .tech-advantages-subtitle {
        font-size: 0.9rem;
    }
    
    .advantage-item {
        flex-direction: column;
        gap: 12px;
    }
    
    .advantage-icon {
        margin-top: 0;
    }
    
    .advantage-title {
        font-size: 1rem;
    }
    
    .advantage-desc {
        font-size: 0.9rem;
    }
}

/* 功能模块区块样式 */
.feature-modules {
    width: 100%;
    padding: 80px 0;
}

.feature-modules-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-module {
    background: #f47920;
    padding: 60px 40px;
    border-radius: 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    min-height: 400px;
    box-shadow: 0 8px 32px rgba(244, 121, 32, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-module:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(244, 121, 32, 0.3);
}

.feature-module-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
}

.feature-module-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.feature-module-title {
    font-size: 1.8rem;
    font-weight: bold;
    color: #fff;
    margin: 0;
    line-height: 1.2;
}

.feature-module-desc {
    font-size: 1rem;
    color: #fff;
    line-height: 1.8;
    text-align: justify;
    margin: 0;
    flex: 1;
    display: flex;
    align-items: center;
}

/* 响应式设计 */
@media (max-width: 900px) {
    .feature-modules {
        padding: 60px 0;
    }
    
    .feature-modules-inner {
        padding: 0 20px;
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .feature-module {
        padding: 40px 32px;
        min-height: 350px;
    }
    
    .feature-module-icon {
        width: 60px;
        height: 60px;
    }
    
    .feature-module-title {
        font-size: 1.5rem;
    }
    
    .feature-module-desc {
        font-size: 0.95rem;
    }
}

@media (max-width: 600px) {
    .feature-modules {
        padding: 40px 0;
    }
    
    .feature-modules-inner {
        padding: 0 16px;
        gap: 20px;
    }
    
    .feature-module {
        padding: 32px 24px;
        min-height: 320px;
        gap: 20px;
    }
    
    .feature-module-icon {
        width: 50px;
        height: 50px;
    }
    
    .feature-module-title {
        font-size: 1.3rem;
    }
    
    .feature-module-desc {
        font-size: 0.9rem;
    }
}