.carousel-inner {
  height: 500px;
}
.carousel-control {
  height: 488px;
  margin-top: 12px;
}

.container-fluid {
  margin-top: 65px !important;
}
ul a {
  font-size: 16px !important;
}

/* App Showcase 样式 */
.app-showcase {
  max-width: 1200px;
  /* margin: 80px auto 60px; */
  padding: 0 20px;
}

/* 应用头部 */
.app-header {
  text-align: center;
  margin-top: 90px;
  margin-bottom: 60px;
  padding: 40px 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 20px;
  color: white;
  box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.app-title {
  font-size: 48px;
  font-weight: bold;
  margin: 0 0 15px 0;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.app-subtitle {
  font-size: 24px;
  margin: 0;
  opacity: 0.95;
  font-weight: 300;
}

/* 应用简介 */
.app-intro {
  margin-bottom: 60px;
  text-align: center;
}

.app-intro h2 {
  font-size: 32px;
  color: #333;
  margin-bottom: 20px;
  position: relative;
  display: inline-block;
  padding-bottom: 10px;
}

.app-intro h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  border-radius: 2px;
}

.intro-text {
  font-size: 18px;
  line-height: 1.8;
  color: #555;
  max-width: 800px;
  margin: 0 auto;
}

/* 核心特色 */
.app-features {
  margin-bottom: 60px;
}

.app-features h2 {
  font-size: 32px;
  color: #333;
  margin-bottom: 40px;
  text-align: center;
  position: relative;
  display: inline-block;
  width: 100%;
  padding-bottom: 10px;
}

.app-features h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  border-radius: 2px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.feature-item {
  background: white;
  padding: 35px 25px;
  border-radius: 15px;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  border: 1px solid #f0f0f0;
}

.feature-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 30px rgba(102, 126, 234, 0.2);
  border-color: #667eea;
}

.feature-icon {
  font-size: 48px;
  margin-bottom: 20px;
}

.feature-item h3 {
  font-size: 22px;
  color: #333;
  margin-bottom: 15px;
  font-weight: 600;
}

.feature-item p {
  font-size: 15px;
  color: #666;
  line-height: 1.6;
  margin: 0;
}

/* 应用截图 */
.app-screenshots {
  margin-bottom: 60px;
}

.app-screenshots h2 {
  font-size: 32px;
  color: #333;
  margin-bottom: 40px;
  text-align: center;
  position: relative;
  display: inline-block;
  width: 100%;
  padding-bottom: 10px;
}

.app-screenshots h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  border-radius: 2px;
}

.screenshots-grid {
    display: flex;
  /* display: grid; */
  /* grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); */
  gap: 30px;
  justify-items: center;
}

.screenshot-item {
  text-align: center;
  transition: all 0.3s ease;
}

.screenshot-item:hover {
  transform: scale(1.05);
}

.screenshot-item img {
  width: 100%;
  max-width: 280px;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  transition: all 0.3s ease;
}

.screenshot-item:hover img {
  box-shadow: 0 15px 40px rgba(102, 126, 234, 0.3);
}

.screenshot-desc {
  margin-top: 15px;
  font-size: 16px;
  color: #555;
  font-weight: 500;
}

/* CTA 区域 */
.app-cta {
  text-align: center;
  padding: 40px 20px;
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  border-radius: 15px;
  margin-top: 40px;
  margin-bottom: 40px;
  box-shadow: 0 8px 20px rgba(245, 87, 108, 0.3);
}

.cta-text {
  font-size: 22px;
  color: white;
  margin: 0;
  font-weight: 500;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .app-title {
    font-size: 36px;
  }

  .app-subtitle {
    font-size: 18px;
  }

  .app-intro h2,
  .app-features h2,
  .app-screenshots h2 {
    font-size: 26px;
  }

  .intro-text {
    font-size: 16px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .screenshots-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
  }

  .screenshot-item img {
    max-width: 220px;
  }

  .cta-text {
    font-size: 18px;
  }
}