* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 鼠标跟踪效果样式 */
#mouse-trail {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
}

#mouse-trail div {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  background: rgba(173, 216, 230, 0.3); /* 浅蓝色，固定颜色 */
  box-shadow: 0 0 10px rgba(173, 216, 230, 0.5);
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  color: #333;
  line-height: 1.6;
  background-color: #f8f9fa;
  position: relative;
  overflow-x: hidden;
}
.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 20px;
}
/* 导航栏 */
header {
  background-color: white;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
}
.logo-container {
  display: flex;
  align-items: center;
  justify-content: start;
}
.logoImg {
  width: 40px;
  height: 40px;
  margin-right: 10px;
  display: block;
}
.logo {
  font-size: 24px;
  font-weight: 900;
  color: #262626;
  text-decoration: none;
  display: block;
}
.nav-links {
  display: flex;
  list-style: none;
  align-items: center;
}
.nav-links li {
  margin-left: 30px;
}
.nav-links .active {
  border-radius: 16px;
  background-color: #e6effe;
  padding: 4px 12px;
  box-sizing: border-box;
}
.nav-links .active a {
  color: #2a80ff;
}
.nav-links a {
  text-decoration: none;
  color: #333;
  font-size: 16px;
  transition: color 0.3s;
}
.nav-links a:hover {
  color: #1a73e8;
}
/* Animate.css 基础支持样式 */
.animate__animated {
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

/* 动画完成后保持可见 */
.animate__animated.animate__fadeInUp,
.animate__animated.animate__fadeInLeft,
.animate__animated.animate__fadeInRight,
.animate__animated.animate__fadeIn,
.animate__animated.animate__slideInLeft,
.animate__animated.animate__slideInRight,
.animate__animated.animate__backInLeft,
.animate__animated.animate__flipInX,
.animate__animated.animate__tada,
.animate__animated.animate__zoomIn,
.animate__animated.animate__bounceIn,
.animate__animated.animate__rotateIn {
  opacity: 1;
}

/* 确保所有动画元素最终都可见 */
.animate__animated:not(.animate__infinite) {
  animation-fill-mode: forwards;
}

/* 英雄区 */
.hero {
  padding: 140px 125px 100px;
  background: url(./img/bg.png) no-repeat;
  background-size: 100%;
  margin-top: 60px;
  position: relative;
  overflow: hidden;
}
.tipsBox {
  margin-top: 288px;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  display: grid;
}
.tips-card {
  padding:12px;
  border-radius: 10px;
  display: flex;
  justify-content: start;
  align-items: center;
  background-color: #f7f8fa;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.tips-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(26, 115, 232, 0.1), transparent);
  transition: 0.5s;
}

.tips-card:hover::before {
  left: 100%;
}
.tips-card img {
  width: 60px;
  height: 60px;
  margin-right: 16px;
}
.tips-card .tipsContent .tipsTitle {
  font-size: 20px;
}
.hero h1 {
  font-size: 50px;
  margin-bottom: 20px;
  color: #262626;
}
.hero .hero-content p {
  font-size: 18px;
  margin-bottom: 168px;
  color: #455a64;
}
.btn-primary {
  background-color: #1a73e8;
  color: white;
  border: none;
  padding: 8px 30px;
  font-size: 16px;
  border-radius: 24px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: background-color 0.3s;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: 0.5s;
}

.btn-primary:hover::before {
  left: 100%;
}
.btn-secondary {
  background-color: white;
  color: #1a73e8;
  border: 1px solid #1a73e8;
  padding: 8px 30px;
  font-size: 16px;
  border-radius: 24px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  margin-left: 15px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.btn-secondary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(26, 115, 232, 0.1), transparent);
  transition: 0.5s;
}

.btn-secondary:hover::before {
  left: 100%;
}
/* 特点区块 */
.features {
  padding: 80px 0;
  text-align: center;
}
.section-title {
  font-size: 32px;
  margin-bottom: 60px;
  color: #1a237e;
  /* position: relative; */
  /* text-align: center; */
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
}
.titleLeft,
.titleRight {
  height: 12px;
  margin-top: 4px;
}

.features-grid {
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.feature-card {
  background-color: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(26, 115, 232, 0.1), transparent);
  transition: 0.5s;
}

.feature-card:hover::before {
  left: 100%;
}
.feature-icon {
  /* font-size: 40px; */
  width: 60px;
  color: #1a73e8;
  margin-bottom: 20px;
}
.feature-title {
  font-size: 26px;
  margin-bottom: 15px;
  color: #262626;
}
.feature-desc {
  color: #898989;
  font-size: 18px;
}
/* 核心功能 */
.core-functions {
  padding: 80px 0;
  background-color: white;
}
.tabs {
  display: flex;
  justify-content: space-around;
  margin-bottom: 50px;
  border-bottom: 2px solid #e0e0e0;
}
.tab {
  padding: 15px 30px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  color: #666;
  border-bottom: 3px solid transparent;
  transition: all 0.3s;
}
.tab.active {
  color: #1a73e8;
  border-bottom-color: #1a73e8;
}
.tab-content {
  display: none;
  text-align: center;
}
.tab-content.active {
  display: block;
}
/* 用户评价 */
.testimonials {
  padding: 80px 0;
  background-color: #f5f5f5;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  padding: 24px;
}
.testimonial-card {
  background-color: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.testimonial-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(26, 115, 232, 0.1), transparent);
  transition: 0.5s;
}

.testimonial-card:hover::before {
  left: 100%;
}
.testimonial-card .testimonial-header {
  display: flex;
  justify-content: start;
  gap: 16px;
}
.testimonial-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #e0e0e0;
  margin: 0 0 20px;
}
.testimonial-text {
  color: #666;
  margin-bottom: 20px;
  line-height: 1.8;
}
.testimonial-name {
  font-weight: 500;
  color: #262626;
  font-size: 20px;
}
.testimonial-company {
  color: #888;
  font-size: 16px;
}
.testimonial-rating {
  color: #ffc107;
  margin-top: 24px;
  text-align: right;
}
/* 用户来源 */
.users {
  padding: 80px 0;
  text-align: center;
}
.universities {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
  margin-top: 40px;
}
.university-logo {
  width: 100px;
  height: 100px;
  background-color: white;
  border-radius: 5px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #666;
  font-size: 12px;
  font-weight: bold;
  transition: transform 0.3s;
  position: relative;
  overflow: hidden;
}

.university-logo::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(26, 115, 232, 0.1), transparent);
  transition: 0.5s;
}

.university-logo:hover::before {
  left: 100%;
}
/* 页脚 */
footer {
  background-color: #061323;
  color: white;
  padding: 50px 0 20px;
}
.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 30px;
}
.footer-logo {
  font-size: 24px;
  font-weight: bold;
  margin-bottom: 20px;
}
.footer-desc {
  color: #b0bec5;
  margin-bottom: 20px;
  font-size: 14px;
}
.footer-title {
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 20px;
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: #b0bec5;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s;
}
.footer-links a:hover {
  color: white;
}
.copyright {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid #37474f;
  color: #b0bec5;
  font-size: 14px;
}
footer {
  background-color: #061323;
  color: white;
  padding: 60px 0 40px;
}

.footer-content {
  display: flex;
  justify-content: center;
  align-items: start;
  gap: 60px;
  max-width: 1400px;
  margin: 0 auto;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 600;
  color: white;
}

.footer-brand .footer-logo-img {
  width: 60px;
  height: 60px;
}

.footer-column {
  text-align: center;
}

.footer-column1 {
  text-align: left;
}

.footer-column .footer-title {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 20px;
  color: white;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: white;
}

.footer-qrcode {
  text-align: center;
}

.footer-qrcode img {
  width: 100px;
  height: 100px;
  padding: 8px;
  border-radius: 8px;
  margin-bottom: 10px;
}

.footer-qrcode p {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}
/* 科技感增强样式 */
*::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

*::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

*::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg,#ebeced, #ebeced);
  border-radius: 4px;
}

*::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #ebeced, #ebeced);
}

/* 光效动画 */
@keyframes glow {
  0% {
    box-shadow: 0 0 5px rgba(26, 115, 232, 0.3);
  }
  50% {
    box-shadow: 0 0 20px rgba(26, 115, 232, 0.6);
  }
  100% {
    box-shadow: 0 0 5px rgba(26, 115, 232, 0.3);
  }
}

.glow-effect {
  animation: glow 2s ease-in-out infinite;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .tipsBox,
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero h1 {
    font-size: 32px;
  }
  .features-grid,.tipsBox {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}