$primary-color: #2d5f2e;
$secondary-color: #f4a261;
$accent-color: #e76f51;
$text-color: #333;
$bg-color: #fff;
$transition-duration: 0.3s;
$hero-height-mobile: 200px;
$hero-gradient-height: 30%;

html {
  font-size: 14px;
}

body {
  font-family: "Microsoft YaHei", Arial, sans-serif;
  overflow-x: hidden;
  overflow-y: scroll;
  margin: 0;
  padding: 0;
  background-color: #fff;
  color: #333;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
.PC{
  display:block;
}
.MB{
  display:none;
}
@keyframes scaleLoop {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes scrollMove {
  0% { transform: translateX(-50%) translateY(0); opacity: 1; }
  100% { transform: translateX(-50%) translateY(20px); opacity: 0; }
}

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

.pulsate-fwd {
  animation: scaleLoop 1s ease-in-out infinite both;
}

.hover-zoom {
  transition: transform 0.5s ease;
}

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

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

/* ============================================ */
/* 加载页面样式 - Loader */
/* ============================================ */
#loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #fff;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease;
}

#loader-content {
  text-align: center;
}

#loading-text {
  font-size: 2rem;
  color: #333;
  margin-bottom: 20px;
}

.loading-char {
  display: inline-block;
  margin: 0 5px;
}

.loading-dots {
  display: inline-block;
}

.loading-dots span {
  animation: blink 1s ease-in-out infinite;
}

.loading-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.loading-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

#loader-progress {
  width: 200px;
  height: 4px;
  background-color: #ddd;
  margin: 0 auto 10px;
  border-radius: 2px;
  overflow: hidden;
}

#loader-bar {
  height: 100%;
  width: 0;
  background-color: #2d5f2e;
  transition: width 0.3s ease;
}

#loader-percentage {
  font-size: 1rem;
  color: #666;
}

/* ============================================ */
/* 开屏区域样式 - Hero Section */
/* ============================================ */
.hero-section {
  position: relative;
  width: 100%;
  /* min-height: 100vh; */
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 底部渐变蒙层 - 实现图片到正文的平滑过渡 */
.hero-gradient {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 18%;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.8) 50%, rgba(255, 255, 255, 1) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100vh;
}

/* 开屏元素样式 - Logo、Series、Title */
.hero-logo,
.hero-series,
.hero-title1,
.hero-title2 {
  opacity: 0;
  position: absolute;
}

.hero-logo {
  left: 78.85%;
  top: 3.5%;
  width: 14.99%;
  max-width: 288px;
  height: auto;
}

.hero-series {
  left: 10.91%;
  top: 15.15%;
  width: 8.8%;
  max-width: 169px;
  height: auto;
}

.hero-title1 {
  left: 22.58%;
  top: 14.39%;
  width: 37.11%;
  max-width: 655px;
  height: auto;
}

.hero-title2 {
  left: 34.61%;
  top: 30.07%;
  width: 43.83%;
  max-width: 784px;
  height: auto;
}

/* 滚动引导箭头 */
.scroll-indicator {
  position: absolute;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

.scroll-arrow {
  width: 30px;
  height: 50px;
  border: 2px solid #666;
  border-radius: 25px;
  position: relative;
}

.scroll-arrow::after {
  content: '';
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 12px;
  background-color: #666;
  border-radius: 3px;
  animation: scrollMove 1s ease-in-out infinite;
}

/* ============================================ */
/* 移动端顶部导航 - Mobile Header */
/* ============================================ */
.mobile-header {
  display: none;
  position: absolute;
  top: auto;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  z-index: 50;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.mobile-header.sticky {
  position: fixed;
  top: 0;
  z-index: 100;
}

.mobile-nav {
  display: flex;
  justify-content: space-around;
  padding: 5px 0;
}

.nav-item {
  text-decoration: none;
  color: #0051c3;
  background-color: transparent;
  font-size: 1rem;
  padding: 5px 10px;
  border-radius: 20px;
  transition: all 0.3s ease;
}

.nav-item.active {
  color: #fff;
  background-color: #0051c3;
}

/* ============================================ */
/* 桌面端侧边导航 - Sidebar Navigation */
/* ============================================ */
.sidebar-nav {
  position: fixed;
  left: auto;
  right: 0;
  top: 75%;
  transform: translateY(-50%);
  z-index: 90;
  opacity: 0;
  transform: translateY(-50%) translateX(-60px);
}

.sidebar-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.sidebar-bg img {
  width: 200px;
  height: auto;
}

.sidebar-links {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  padding: 0px 10px;
}

.sidebar-link {
  display: flex;
  justify-content: center;
  padding: 10px 0;
  opacity: 0.6;
  transition: opacity 0.3s ease;
}

.sidebar-link.active,
.sidebar-link:hover {
  opacity: 1;
}

.sidebar-link img {
  width: 184px;
  height: auto;
}

/* ============================================ */
/* 正文区域样式 - Content Section */
/* ============================================ */
.content-section {
  width: 100%;
  position: relative;
  background: url(/zhuanti/img/zt2615_btmbg.png) no-repeat center bottom;
  background-size: 100%;
}

/* ============================================ */
/* 引言部分 - Introduction Section */
/* ============================================ */
.intro-section {
  position: relative;
  width: 100%;
  min-height: 300px;
}

.intro-bg {
  position: absolute;
  top: 0;
  left: 10%;
  width: 90%;
  height: 100%;
  max-width: 1500px;
  z-index: 0;
}

.intro-bg img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.intro-container {
  position: relative;
  z-index: 1;
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 40px;
  display: flex;
  /* gap: 40px; */
  flex-direction: column;
  background: url(/zhuanti/img/zt2615_introbg.png) no-repeat bottom right;
  background-size: cover;
}

.intro-title {
  flex-shrink: 0;
}

.intro-title img {
  width: 100px;
  height: auto;
}

.intro-content {
  flex: 1;
  color: #333;
  line-height: 1.8;
  margin-top: -1%;
  padding-bottom: 2%;
}

.intro-content p {
  /* margin-bottom: 15px; */
  font-size: 1.1rem;
  text-indent: 2rem;
  font-family: "KaiTi", "楷体", serif;
  font-weight: bold;
}

/* ============================================ */
/* 内容小节样式 - Section Items */
/* ============================================ */
.content-section-item {
  max-width: 1200px;
  margin: 40px auto;
  padding: 0 20px;
}

.section-title {
  text-align: center;
  margin-bottom: 20px;
}

.section-title img {
  width: 36%;
  max-width: 700px;
  height: auto;
}

.section-content {
  color: #333;
  line-height: 1.8;
}

.section-content p {
  text-align: justify;
  margin-bottom: 20px;
  font-size: 1rem;
  line-height: 2;
}
.section-content p video {
    width: 80%;
    height: auto;
    margin: 2% auto;
}

p {}

.image-wrapper {
  margin: 30px 0;
  text-align: center;
}

.image-wrapper img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* ============================================ */
/* 底部区域 - Footer Section */
/* ============================================ */
.footer-section {
      opacity: 1;
      width: 100%;
      max-width: 1680px;
      box-sizing: border-box;
      padding: 60px 0;
      display: flex;
      flex-direction: row;
      flex-wrap: nowrap;
      align-items: center;
      color: #3f3f3f;
}
.footLeft {
    width: 50%;
    padding-right: 40px;
    text-align: right;
    font-size: 26px;
    font-weight: bold;
    line-height: 2;
    box-sizing: border-box;
    border-right: 4px solid #5f5f5f;
}

.footRight {
    width: 50%;
    padding-left: 40px;
    line-height: 1.5;
    box-sizing: border-box;
    text-align: center;
    font-size: 16px;
    font-weight: 400;
}
.footRight p {
    float: left;
}

/* ============================================ */
/* 响应式样式 - Mobile (<= 767px) */
/* ============================================ */
@media (max-width: 767px) {
  .PC{
  display:none;
}
.MB{
  display:block;
}
  .hero-section {
  min-height: 300px;
  height: auto;
  }

  .hero-bg {
    height: auto;
  }

  .hero-gradient {
    display: none;
  }

  .hero-content {
    min-height: 300px;
    padding: 0px;
    height: auto;
  }

  .hero-logo,
  .hero-series,
  .hero-title1,
  .hero-title2 {
    opacity: 1;
  }

  .hero-logo {
    left: auto !important;
    top: auto !important;
    right: 10px;
    top: 10px !important;
    width: 20%;
    max-width: 90px;
  }

  .hero-series {
    left: 10px !important;
    top: 10px !important;
    width: 50px;
    max-width: 50px;
  }

  .hero-title1 {
    left: 21% !important;
    top: 18% !important;
    width: 56%;
    max-width: 300px;
  }

  .hero-title2 {
    left: 26% !important;
    top: 36% !important;
    width: 66%;
    max-width: 300px;
  }

  .scroll-indicator {
    display: none;
  }

  .mobile-header {
    display: block;
    left: 0;
  }

  .mobile-header.sticky {
    position: fixed;
    top: 0;
  }

  .sidebar-nav {
    display: none;
  }

  .content-section {
    padding-top: 0;
  
  }

  .intro-container {
    flex-direction: column;
    /* gap: 20px; */
    padding: 20px;
    margin-top: 10%;
  }

  .intro-title {
    text-align: left;
  }

  .intro-title img {
    width: 24%;
  }

  .intro-content p {
    font-size: 1rem;
  }

  .section-title img {
    width: 70%;
  }

  .section-content p {
    font-size: 1rem;
  }
  .footer-section {
      max-width: none;
      flex-direction: column-reverse;
      padding: 20px 0 50px 0;
}
.footLeft {
    width: 100%;
    font-size: 1rem;
    padding-right: 0px;
    text-align: center;
}

.footRight {
    width: 100%;
    padding-left: 0px;
    line-height: 2;
    font-size: 0.8rem;
    padding-bottom: 1rem;
}
.footRight p {width: 100%;}
}

/* ============================================ */
/* 响应式样式 - Tablet (768px - 1024px) */
/* ============================================ */
@media (min-width: 768px) and (max-width: 1024px) {
  .intro-container {
    flex-direction: column;
    align-items: left;
    /* gap: 20px; */
  }

  .intro-title {
    text-align: left;
  }

  .section-title img {
    width: 250px;
  }
}

/* ============================================ */
/* 显示更多按钮 */
/* ============================================ */
div.show-more {
  text-align: right;
  padding-right: 10%;
  font-size: 18px;
  cursor: pointer;
}

div.show-more a {
  color: #d93835;
}