@font-face {
  font-family: 'zhengwen';
  src: url('../fonts/zhengwen.otf') format('opentype');
}

@font-face {
  font-family: 'PingFang';
  src: local('PingFang SC'), local('Microsoft YaHei');
}

/* ---- 基础设置 ---- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  height: 100%;
  overflow: hidden;
  font-family: 'PingFang', sans-serif;
  touch-action: pan-y;
  /* background: linear-gradient(135deg, #fff3c8 0%, #ffe8a1 50%, #ffd966 100%); */
}

/* 强制横屏适配 */
@media screen and (orientation:portrait) {
  body {
    transform: rotate(90deg);
    transform-origin: center;
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100vh;
    height: 100vw;
    margin-left: -50vh;
    margin-top: -50vw;
  }
}

/* ---- 横向滑屏容器 ---- */
#box {
  width: 800%;
  height: 100%;
  display: flex;
  transition: transform .8s cubic-bezier(0.4, 0, 0.2, 1);
}

.screen {
  width: 12.5%;
  height: 100%;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

/* ---- 开篇画面 ---- */
#s0 {
  background-image: url(../img/s0/bg1.PNG);
  position: relative;
  overflow: hidden;
}

/* 历史轨道设计 */
.track-container {
  position: absolute;
  bottom: 15%;
  left: 0;
  right: 0;
  height: 8px;
  z-index: 1;
}

.track {
  position: absolute;
  top: 100%;
  left: 0%;
  right: 0%;
  height: 100%;
  background: linear-gradient(90deg,
    #8B4513 0%,
    #A0522D 20%,
    #8B4513 40%,
    #A0522D 60%,
    #8B4513 80%,
    #A0522D 100%);
  border-radius: 4px;
  box-shadow: 
    0 2px 10px rgba(139, 69, 19, 0.3),
    0 0 20px rgba(255, 255, 255, 0.5) inset;
}

.track-details {
  position: absolute;
  top: 60%;
  left: 10%;
  right: 10%;
  height: 2px;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 15px,
    #D2691E 15px,
    #D2691E 30px
  );
  transform: translateY(-50%);
}

/* 列车样式优化 */
.train {
  position: absolute;
  bottom: 10%;
  width: 90vw;
  height: 15vw;
  min-width: 900px;
  min-height: 300px;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  z-index: 2;
  filter: drop-shadow(5px 5px 15px rgba(0, 0, 0, 0.3));
  transform-origin: bottom center;
}
.train.left {
  left: -50vw;
  background-image: url(../img/s0/green-train.png);
  animation: moveLeft 6s cubic-bezier(0.2, 0.8, 0.3, 1) forwards;
}
.train.right {
  right: -50vw;
  background-image: url(../img/s0/speed-train.PNG);
  animation: moveRight 6s cubic-bezier(0.2, 0.8, 0.3, 1) forwards;
}
@keyframes moveLeft {
  to { 
    left: 7vw;
    transform: translateY(-5px);
  }
}
@keyframes moveRight {
  to { 
    right: 7vw;
    transform: translateY(-5px);
  }
}

/* 主文案 */
.text-box {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  text-align: center;
  color: #8B4513;
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: 0.3rem;
  font-family: 'zhengwen', serif;
  line-height: 1.4;
  opacity: 0;
  text-shadow: 
    2px 2px 4px rgba(255, 255, 255, 0.8),
    0 0 20px rgba(255, 217, 102, 0.5);
  animation: fadeInUp 1s ease-out 0.5s forwards;
  z-index: 10;
  padding: 20px 0;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(5px);
  border-radius: 0px;
  border-top: 3px solid rgba(210, 105, 30, 0.4);
  border-bottom: 3px solid rgba(210, 105, 30, 0.4);
  border-left: none;
  border-right: none;
}

/* 侧边文案 */
.side-text {
  position: absolute;
  top: 55%;
  transform: translateY(-50%);
  width: 25%;
  min-width: 300px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(15px);
  border-radius: 20px;
  border: 2px solid #D2691E;
  box-shadow: 
    0 10px 30px rgba(139, 69, 19, 0.2),
    0 0 40px rgba(255, 255, 255, 0.5) inset;
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0;
  transform: translateY(-50%) scale(0.9);
  z-index: 4;
}
.side-text.show {
  opacity: 1;
  transform: translateY(-50%) scale(1);
}
.side-text.left {
  left: 8.5%;
}
.side-text.right {
  right: 8.5%;
}
.side-text h3 {
  color: #8B4513;
  font-family: 'zhengwen', serif;
  font-size: 1.3rem;
  margin-bottom: 10px;
  text-align: center;
  border-bottom: 2px solid #D2691E;
  padding-bottom: 10px;
}
.side-text p {
  color: #795548;
  font-size: 1rem;
  line-height: 1.5;
  text-align: justify;
}
/* 其他文案 */
.center-text, .ticket-text {
  position: absolute;
  top: 50%; 
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60%; 
  padding: 20px 30px; 
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px); /* Safari支持 */
  border-radius: 12px;
  border-top: 4px solid #D2691E;
  border-bottom: 4px solid #D2691E;
  box-shadow: 
    0 8px 25px rgba(139, 69, 19, 0.1),
    0 0 20px rgba(255, 255, 255, 0.5) inset; /* 添加内发光增强可读性 */
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.6s ease-out;
  z-index: 5;
}

.center-text p, .ticket-text p {
  color: #5D4037;
  font-size: 1rem; 
  font-family: 'zhengwen', sans-serif; /* 使用更简洁的字体 */
  line-height: 1.25; /* 适当增加行高 */
  margin-bottom: 0;
  font-weight: 300;
}
/* 车票文案特殊样式 */
.ticket-text {
  background: linear-gradient(to right, 
    rgba(255, 255, 255, 0.25) 0%,
    rgba(255, 248, 225, 0.3) 100%);
  border-top: 4px solid #8B4513;
  border-bottom: 4px solid #8B4513;
  position: relative;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
/* 车票角标装饰 - 模拟车票的穿孔效果 */
.ticket-text::before,
.ticket-text::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  background: transparent;
  border: 2px solid #D2691E;
  border-radius: 50%;
}
.ticket-text::before {
  top: -10px;
  left: -10px;
}
.ticket-text::after {
  top: -10px;
  right: -10px;
}

/* 进度指示器 */
.progress-indicator {
  position: absolute;
  bottom: 5%;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  max-width: 500px;
  z-index: 10;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(139, 69, 19, 0.2);
  border-radius: 3px;
  margin-bottom: 15px;
  overflow: hidden;
}

.progress-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #8B4513, #D2691E);
  border-radius: 3px;
  transition: width 0.5s ease;
}

.tip {
  text-align: center;
  color: #795548;
  font-size: 1rem;
  font-family: 'PingFang', sans-serif;
  opacity: 0.9;
  animation: pulse 2s infinite ease-in-out;
}

/* 开始按钮 */
.start-btn {
  position: absolute;
  bottom: 30%;
  left: 50%;
  transform: translateX(-50%);
  padding: 16px 48px;
  font-size: 1.4rem;
  font-family: 'zhengwen', serif;
  color: #fff;
  background: linear-gradient(135deg, #8B4513, #D2691E);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
  box-shadow: 
    0 8px 20px rgba(139, 69, 19, 0.4),
    0 0 20px rgba(255, 217, 102, 0.3) inset;
  z-index: 10;
}

.start-btn:hover {
  transform: translateX(-50%) translateY(-2px);
  box-shadow: 
    0 12px 25px rgba(139, 69, 19, 0.5),
    0 0 30px rgba(255, 217, 102, 0.4) inset;
}

.start-btn:active {
  transform: translateX(-50%) translateY(0);
}

/* 滑动提示 */
.swipe-hint {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #8B4513;
  opacity: 0;
  animation: fadeIn 1s ease-out 4s forwards;
  z-index: 10;
}

.swipe-arrow {
  font-size: 2.5rem;
  margin-bottom: 10px;
  animation: swipeHint 1.5s infinite ease-in-out;
}

.swipe-hint span {
  font-family: 'PingFang', sans-serif;
  font-size: 0.9rem;
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

/* 响应式调整 */
@media screen and (min-width: 1400px) {
  .text-box{
	  font-size: 3.5rem;
  }
  .center-text, .ticket-text {
    width: 60%; 
    max-width: 800px; 
    padding: 20px 30px;
  }
  .center-text p, .ticket-text p {
    font-size: 1.2rem; 
  }
  .track-container{
  	bottom: 15%;
  }
  .train{
  	bottom: 10%;
  }
}
@media screen and (max-width: 1400px) and (min-width: 1200px)  {
  .text-box { font-size: 2.5rem; }
  .side-text { width: 28%; min-width: 280px; }
  .center-text, .ticket-text {
      width: 65%;
      padding: 20px 30px;
  	top: 50%;
    }
    .center-text p, .ticket-text p {
      font-size: 1.2rem;
    }
	.track-container{
		bottom: 15%;
	}
	.train{
		bottom: 8%;
	}
}
@media screen and (max-width: 1200px) and (min-width: 992px) {
  .center-text, .ticket-text {
    width: 60%;
    padding: 22px 35px;
    top: 50%; 
  }
  .center-text p, .ticket-text p {
    font-size: 1.1rem;
  }
  .ticket-text::before,
  .ticket-text::after {
    width: 18px;
    height: 18px;
  }
  .track-container{
  	bottom: 15%;
  }
  .train{
	  bottom: 4%;
  }
  
}
@media screen and (max-width: 992px) and (min-width: 768px) {
  .text-box { font-size: 2rem; padding: 10px 0; top: 10%;}
  .side-text { width: 35%; min-width: 250px; padding: 20px; }
  .center-text, .ticket-text {
    width: 75%;
    padding: 20px 30px;
    top: 40%;
    border-top: 3px solid #D2691E;
    border-bottom: 3px solid #D2691E;
  }
  .center-text p, .ticket-text p {
    font-size: 1.2rem;
    line-height: 1.4;
  }
  .ticket-text {
    border-top: 3px solid #8B4513;
    border-bottom: 3px solid #8B4513;
  }
  .ticket-text::before,
  .ticket-text::after {
    width: 16px;
    height: 16px;
    border-width: 1.5px;
  }
  .ticket-text::before {
    top: -8px;
    left: -8px;
  }
  .ticket-text::after {
    top: -8px;
    right: -8px;
  }
  .track-container{
  	bottom: 15%;
  }
  .train{
	  width: 90vw;
	  min-width: 100px;
  	  bottom: -3%;
  }
  @keyframes moveLeft {
      to { 
        left: 3vw ; 
      }
    }
    @keyframes moveRight {
      to { 
        right: 3vw ; 
      }
    }
}
@media screen and (max-width: 768px) {
  .text-box { font-size: 2rem; padding: 10px 0; }
  .side-text { width: 35%; min-width: 250px; padding: 20px; }
  .train{
	  width: 60vw;
	  height: 15vh;
	  min-width: 400px;
	  min-height: 150px;
	  bottom: 2%;
  }
  @keyframes moveLeft {
      to { 
        left: 3vw ; /* 更靠近左侧 */
      }
    }
    @keyframes moveRight {
      to { 
        right: 3vw ; /* 更靠近右侧 */
      }
    }
  }
@media screen and (orientation:portrait) and ((max-width: 1200px) and (min-width: 992px)) {
  /* 在强制横屏模式下 */
  .center-text, .ticket-text {
    width: 70%; 
    padding: 20px 30px;
	top: 50%;
  }
  
  .center-text p, .ticket-text p {
    font-size: 1.1rem;
  }
  .train{
	  bottom: 8%;
  }
}
@media screen and (orientation:portrait) and ((max-width: 992px) and (min-width: 768px)) {
  /* 在强制横屏模式下 */
  .center-text, .ticket-text {
    width: 70%; 
    padding: 20px 30px;
	top: 50%;
  }
  
  .center-text p, .ticket-text p {
    font-size: 1.1rem;
  }
  .train{
	  bottom: 8%;
  }
  @keyframes moveLeft {
      to { 
        left: 5vw ; 
      }
    }
    @keyframes moveRight {
      to { 
        right: 5vw ; 
      }
    }
}
@media screen and (orientation:portrait) and ((max-width: 768px) and (min-width: 576px)) {
  /* 在强制横屏模式下 */
  .center-text, .ticket-text {
    width: 70%; 
    padding: 20px 30px;
	top: 50%;
  }
  .center-text p, .ticket-text p {
    font-size: 1rem;
  }
  .train{
	  width: 90vw;
	  min-width: 350px;
	  bottom: 10%;
  }
  @keyframes moveLeft {
      to { 
        left: 5% ; 
      }
    }
    @keyframes moveRight {
      to { 
        right: 5% ; 
      }
    }
	.start-btn{
		font-size: 1.1rem;
		padding: 12px 36px;
		border-radius: 40px;
	}
}
@media screen and (orientation:portrait) and ((max-width: 576px) and (min-width: 400px)) {
  /* 在强制横屏模式下 */
  .text-box{
	  top: 10%;
  }
  .side-text{
	  width: 38%;
	  top: 48%;
  }
  .side-text h3{
  	  font-size: 1.1rem;
  }
  .center-text, .ticket-text {
    width: 75%; 
    padding: 20px 30px;
	top: 45%;
  }
  .center-text p, .ticket-text p {
    font-size: 1rem;
  }
  .track-container{
	  bottom: 18%;
  }
  .train{
	  width: 90vw;
	  height: 20vh;
	  min-width: 500px;
	  min-height: 180px;
	  bottom: 8%;
  }
  @keyframes moveLeft {
      to { 
        left: 8% ; 
      }
    }
    @keyframes moveRight {
      to { 
        right: 8% ; 
      }
    }
	.start-btn{
		font-size: 1.1rem;
		padding: 12px 36px;
		border-radius: 40px;
	}
}
@media screen and (orientation:portrait) and (max-width: 400px)  {
  /* 在强制横屏模式下 */
  .text-box{
	  top: 10%;
	  font-size: 1.5rem;
  }
  .side-text{
	  width: 38%;
	  top: 48%;
	  padding: 15px;
  }
  .side-text h3{
  	  font-size: 1.1rem;
  }
  .side-text p{
  	  font-size: 0.8rem;
  }
  .center-text, .ticket-text {
    width: 75%; 
    padding: 15px 25px;
	top: 40%;
  }
  .center-text p, .ticket-text p {
    font-size: 1rem;
  }
  .track-container{
	  bottom: 20%;
  }
  .train{
	  width: 90vw;
	  height: 20vh;
	  min-width: 500px;
	  min-height: 180px;
	  bottom: 8%;
  }
  @keyframes moveLeft {
      to { 
        left: 8% ; 
      }
    }
    @keyframes moveRight {
      to { 
        right: 8% ; 
      }
    }
	.start-btn{
		font-size: 1.1rem;
		padding: 12px 36px;
		border-radius: 40px;
	}
}
/* 高对比度模式适配 */
@media (prefers-contrast: high) {
  .center-text, .ticket-text {
    background: rgba(255, 255, 255, 0.98);
    border-color: #8B4513;
  }
  .center-text p, .ticket-text p {
    color: #3E2723; /* 更深色的文字 */
  }
}
/* 减少动画模式适配 */
@media (prefers-reduced-motion: reduce) {
  .center-text, .ticket-text {
    transition: none;
  }
}
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}