html,
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  overflow: scroll;
}

::-webkit-scrollbar {
  display: none;
}

button {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #3E88EC;
  outline: none;
  border: none;
  cursor: pointer;
}

button:hover {
  background-color: #4190F4;
}

button.mobile {
  background: #fff;
  color: #3E88EC;
}

.topic-h1 {
  display: none;
}

/* 公用header */
.common-header {
  width: 100vw;
  height: 90px;
  background-color: rgba(21, 21, 27, 1);
}

.common-menu-tabs {
  display: none;
}

.common-header-content {
  width: 100%;
  height: 88px;
  max-width: 1200px;
  margin-left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.common-header-logo {
  width: auto;
  height: 56px;
  cursor: pointer;
}

.common-header-menu {
  display: none;
  cursor: pointer;
}

.ribbon {
  width: auto;
  height: 100%;
  display: flex;
  column-gap: 40px;
}

.header-download {
  width: 128px;
  height: 40px;
  margin: auto 0;
  border-radius: 20px;
  position: relative;
  overflow: hidden;
}

.header-download-logo {
  width: 20px;
  height: 20px;
  margin-top: 2px;
}

.header-download span {
  color: #fff;
}

/* 首屏 */
.acceleration_engine {
  position: relative;
  width: 100vw;
  height: 1680px;
  background-color: rgba(20, 20, 23, 1);
  overflow: hidden;
}

.engine-scroll {
  width: 100vw;
  height: auto;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%); /* 水平居中 */
  animation: scrollUp linear infinite;
  animation-duration: 40s; /* 假设图片高度为 100px，则 10s 内滚动 100px */
}

.engine-scroll img {
  width: 100%;
  height: auto;
}

@keyframes scrollUp {
  from {
    transform: translateY(0) translateX(-50%);
  }
  to {
    transform: translateY(-300px) translateX(-50%); /* 移动到第一张图片的高度 */
  }
}

/* 上半部分 */
.engine-top {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 600px;
  background: linear-gradient(
    rgba(20, 20, 23, 1),
    rgba(20, 20, 23, 0.8),
    rgba(20, 20, 23, 1)
  );
}

.engine-top-content-title {
  width: 867px;
  height: auto;
  margin-top: 227px;
  margin-left: 50%;
  transform: translateX(-50%);
}

.engine-download {
  width: 360px;
  height: 90px;
  margin-top: 64px;
  margin-left: 50%;
  transform: translateX(-50%);
  border-radius: 45px;
  overflow: hidden;
}

.engine-download::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3); /* 白色波纹颜色 */
    transform: translate(-50%, -50%);
    opacity: 1;
    border-radius: 50%;
    animation: ripple 1.5s infinite;
}

@keyframes ripple {
  0% {
    width: 0;
    height: 0;
    opacity: 1;
  }
  100% {
    width: 420px; /* 设置为大于按钮实际宽度的值，以确保覆盖整个按钮 */
    height: 420px;
    opacity: 0;
  }
}

.engine-download img {
  width: 48px;
  height: 44px;
  margin-top: 4px;
}

.engine-download span {
  font-size: 26px;
  color: #fff;
}

/* 下半部分 */
.engine-bottom {
  position: absolute;
  top: 600px;
  left: 0;
  width: 100vw;
  height: 1080px;
  background: linear-gradient(
    rgba(20, 20, 23, 1),
    rgba(20, 20, 23, 0.8),
    rgba(1, 1, 1, 1)
  );
}

.engine-bottom-sports {
  width: 1200px;
  height: auto;
  margin-top: 253px;
  margin-left: 50%;
  transform: translateX(-50%);
}

/* 精细调整 畅快游戏 */
.stable-module {
  width: 100vw;
  height: auto;
  background: rgba(1, 1, 1, 1);
  padding: 80px 0 57px 0;
}

.stable {
  width: 1200px;
  height: auto;
  margin-left: 50%;
  transform: translateX(-50%);
}

/* 超高性价比 福利不停 */
.synchronous-module {
  width: 100vw;
  height: auto;
  background: rgba(1, 1, 1, 1);
  padding: 57px 0 57px 0;
}

.synchronous {
  width: 1200px;
  height: auto;
  margin-left: 50%;
  transform: translateX(-50%);
}

/* 海量游戏 免费加速 */
.magnanimity-module {
  width: 100vw;
  height: auto;
  background: rgba(1, 1, 1, 1);
  padding: 57px 0 57px 0;
}

.magnanimity {
  width: 1200px;
  height: auto;
  margin-left: 50%;
  transform: translateX(-50%);
}

/* 无限可能 免费下载 */
.footer-download-module {
  width: 100vw;
  height: auto;
  background: rgba(1, 1, 1, 1);
  padding: 60px 0 60px 0;
  position: relative;
}

.footer-download {
  width: 1200px;
  height: auto;
  margin-left: 50%;
  transform: translateX(-50%);
}

.footer-download-btn {
  width: 264px;
  height: 60px;
  font-size: 20px;
  font-weight: 700;
  margin: auto 0;
  border-radius: 30px;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  right: calc(50vw - 500px);
  overflow: hidden;
}

.footer-download-logo {
  width: 30px;
  height: 30px;
  margin-top: 2px;
}

.footer-download-btn span {
  color: #fff;
}

/* 底部 IPO */
.footer-module {
  background-color: rgba(24, 24, 24, 1);
  padding: 53px 0 49px 0;
}

.footer-content {
  width: 1200px;
  margin-left: 50%;
  transform: translateX(-50%);
}

.footer-content-img {
  display: flex;
  align-items: center;
}

.footer-content-logo {
  width: auto;
  height: 40px;
}

.footer-content-title {
  width: 289px;
  height: auto;
  margin-left: 16px;
}

.footer-text {
  font-weight: 400;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-advice {
  font-weight: 400;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 28px;
}

.footer-protocol {
  font-weight: 400;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 8px;
  display: flex;
  align-items: center;
  column-gap: 8px;
}

.footer-protocol span {
  cursor: pointer;
}

.copy-column {
  margin-top: 40px;
}

.copyright {
  font-weight: 400;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
}

.permit {
  font-weight: 400;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-right: 16px;
}