:root {
      /* 方便以后一页一改 */
      --pc-bg: url("images/bg-pc.jpg");
      --m-bg:  url("images/bg-m.jpg");
      --card-padding: 24px;
      --gap: 50px;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  height: 100%;
  overflow-x: hidden;   /* 强制不让横向滚动条跑出来 */
  height: 100%;
  overflow: hidden;
}
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }

    .page {
      min-height: 100vh;
      background-position: center;
      background-size: cover;
      background-repeat: no-repeat;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }

    .pc-page {
      background-image: var(--pc-bg);
      display: none; /* JS 里按宽度切换 */
    }
    .mobile-page {
      background-image: var(--m-bg);
      display: none;
    }

    /* PC 布局 -------------------------------------------------- */
    .pc-wrap {
      max-width: var(--page-max-width);
      margin: 0 auto;
      padding: 40px 24px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .pc-card {
      width: 100%;
      background: rgba(255,255,255,0.0); /* 需要的话可以放半透明底 */
      padding: var(--card-padding);
      border-radius: 8px;
      /* outline: 1px solid rgba(0,0,0,0.1); 调试用 */
      
    }

    /* 顶部：左 logo + 右 3 个按钮图片 */
    .pc-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: var(--gap);
    }
    .pc-logo {
      flex: 0 0 auto;
      max-width: 260px;
    }
    .pc-logo img {
      display: block;
      width: 100%;
      height: auto;
    }

    .pc-header-right {
      display: flex;
      gap: 12px;
      align-items: center;
      flex: 0 0 auto;
    }
    .pc-header-right img {
      display: block;
      height: 50px;          /* 按需求改 */
      width: auto;
    }

    /* 主体区域：左 panel + 右大图 */
    .pc-main {
      display: grid;
      grid-template-columns: 1.4fr 2fr;  /* 左宽:右宽比例，随便调 */
      gap: var(--gap);
      margin-left: 10%;
    }

.pc-left {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}


.pc-left-bottom {
  display: flex;
  gap: var(--gap);
}
.pc-left-bottom > div {
  flex: 1;
}

    .pc-qrcode-box {
      background: rgba(255,255,255,0); /* 需要可换成纯色/全透明 */
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 8px;
    }
    #pc-qrcode {
      width: 100%;
      padding: 5px;
      background: #671a16;
      max-width: 200px;   /* 控制二维码最大尺寸 */
      aspect-ratio: 1 / 1;
    }
    /* qrcode.min.js 会往里面塞 <img> 或 <canvas>，撑满父元素 */
    #pc-qrcode img,
    #pc-qrcode canvas {
      width: 100%;
      height: 100%;
      display: block;
    }

.pc-left-top img {
  width: 100%;
  height: 100%;
  display: block;
  padding: 30px;
  object-fit: cover;
}
.pc-left-bottom-img img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}
.pc-right img {
  width: 80%;
  height: 100%;
  display: block;
  object-fit: cover;
  padding: 30px;
}

    /* MOBILE 布局 ---------------------------------------------- */
    .mobile-page {
      display: none;
    }

    .m-wrap {
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 16px 12px 24px;
    }

.m-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.m-logo {
  flex: 0 0 auto;
}

.m-logo img {
  width: 150px;   /* 手机 logo 宽度，自己看着调 */
}

.m-header-right {
  display: flex;
  gap: 8px;
  align-items: center;
}

.m-header-right img {
  height: 25px;   /* 手机按钮高度，自己改 */
  width: auto;
}
.m-bottom-download {
  width: 80%;
  margin: 0 10%;
}
.bottom_text{
    color: white;
    font-size: 80%;
    text-align: center;
}

.scan_text{
    color: white;
    font-size: 150%;
    text-align: center;
}

    /* 简单的响应式开关：<= 899 为手机 */
@media (min-width: 900px) {
  .pc-page { display: block; }
  .m-header { display: none; }   /* PC 不显示手机头部 */
}

@media (max-width: 899px) {
  .mobile-page { display: block; }
  .pc-header { display: none; }  /* 手机不显示 PC 头部，避免重复 */
}

.fade-box {
  position: relative;
  width: 100%;
  height: auto;
  overflow: hidden;
}

.fade-box img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: auto;
  opacity: 0;
  transition: opacity 1s ease;
}

.fade-box img.active {
  opacity: 1;
  position: relative; /* 保持变换不影响布局 */
}


.dl-mask {
    position: fixed;
    inset: 0;
    display: none;                /* 默认隐藏 */
    align-items: center;
    justify-content: center;
    z-index: 999;
}

.dl-mask-text {
    max-width: 80%;
    color: white;
	background: #000000e3;
	padding: 10px;
	border-radius: 20px;
    text-align: center;
}