html {
  overflow-y: auto;
  scrollbar-width: none;
  /* Firefox */
  -ms-overflow-style: none;
  /* IE 10+ */
}
/* WebKit 浏览器（Chrome, Safari, Edge） */
html::-webkit-scrollbar {
  display: none;
  /* 隐藏滚动条 */
}
.color {
  color: skyblue;
}
body {
  font-size: 16px;
  background: #1a1a1a;
  margin: 0;
  padding: 20px;
  font-family: 'Segoe UI', system-ui;
  color: #e0e0e0;
  overflow: auto;
  scrollbar-width: none;
  height: 100%;
}
@media (max-width: 450px) {
  body {
    font-size: 12px;
  }
}
ul {
  padding-left: 40px;
  margin-left: 0;
}
@media (max-width: 450px) {
  ul {
    padding-left: 10px;
    margin-left: 0;
    list-style: none;
    /* 去掉默认符号 */
  }
  ul li::before {
    content: "• ";
    /* 手动添加项目符号 */
    color: #e0e0e0;
  }
  ul li li::before {
    content: "◇ ";
    /* 手动添加项目符号 */
    color: #e0e0e0;
  }
}
.container {
  background: #393939;
  border-radius: 15px;
  padding: 2rem;
  max-width: 1200px;
  margin: 2rem auto;
  width: 90%;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}
@media (max-width: 450px) {
  .container {
    width: 85%;
    padding: 1.2rem;
    margin: 1rem auto;
  }
}
.qe {
  border-radius: 5px;
  border-left: 3px solid #6c6c6c;
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
  background: rgba(26, 26, 26, 0.3);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
@media (max-width: 450px) {
  .qe {
    margin: 0.5rem 0;
    padding: 1rem 1rem;
  }
}
.qe:hover {
  border-left-color: #7eb8ff;
  background: rgba(26, 26, 26, 0.4);
  transform: translateX(5px);
  box-shadow: -3px 0 10px rgba(0, 0, 0, 0.2);
}
.top {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  margin: 1.5rem 0;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.top-header {
  padding: 1rem;
  display: flex;
  align-items: center;
  cursor: pointer;
  position: relative;
  transition: inherit;
}
@media (max-width: 450px) {
  .top-header {
    font-size: 16px;
  }
}
.top-header::after {
  content: "▶";
  position: absolute;
  right: 1rem;
  transition: inherit;
  color: rgba(224, 224, 224, 0.6);
}
.top-content {
  max-height: 0;
  overflow: auto;
  transition: inherit;
  padding: 0 1.5rem 0;
  overflow-y: auto;
  scrollbar-width: none;
  /* Firefox */
  -ms-overflow-style: none;
  /* IE 10+ */
}
.top-content::-webkit-scrollbar {
  display: none;
}
.top:hover {
  border-color: rgba(126, 184, 255, 0.3);
  background: rgba(77, 77, 77, 0.2);
}
.top:hover .top-header {
  background: rgba(77, 77, 77, 0.15);
}
.top:hover .top-header::after {
  transform: rotate(90deg);
  color: #7eb8ff;
}
.top:hover .top-content {
  max-height: 400px;
  padding: 1rem 1.5rem 0;
}
a {
  color: #7eb8ff;
  text-decoration: none;
  position: relative;
  transition: background-size 0.3s ease-in-out, background-color 0.3s ease-in-out;
  padding: 0.2rem 0.4rem;
  border-radius: 10px 10px 0 0;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 1px;
  background-repeat: no-repeat;
  background-position: left bottom;
}
a:hover {
  background-color: rgba(126, 184, 255, 0.1);
  background-size: 100% 1px;
}
a:focus {
  outline: none;
}