* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

@font-face {
  font-family: 'Routed Gothic';
  src: local('Routed Gothic'), url('fonts/routed-gothic.ttf') format('truetype');
}


body,
html {
  height: 100%;
  font-family: Routed Gothic;
}

#resizer {
  border-style: dashed;
  /* 设置边框样式为虚线 */
  border-width: 1px;
  /* 设置边框宽度 */
  cursor: ew-resize;
  /* 设置光标样式为水平调整 */
}

/* .resizer {
  width: 5px;
  background-color: #888;
  cursor: ew-resize;
} */


.container {
  display: flex;
  height: 100%;
}

.sidebar {
  background-color: white;
  color: black;
  width: 25%;
  overflow-y: auto;
}

.projects-submenu .subtab {
  padding-left: 50px;

}



.tab,
.subtab {
  padding: 15px;
  cursor: pointer;
}

.tab:hover,
.subtab:hover {
  background-color: #F3F3F3;
}

.projects-submenu {
  display: none;
  background-color: white;
}


.tab.active+.projects-submenu {
  display: block;
}



.content {
  flex-grow: 1;
  background-color: #f0f0f0;
  padding: 20px;
  overflow-y: auto;
}

#matter-canvas {
  width: 100%;
  height: 100%;
}


.content-tab {
  display: none;
}

/* 默认样式适用于大屏幕 */
.content-tab {
  max-width: 800px;
  /* 限制内容宽度，使其不至于过宽 */
  margin: 0 auto;
  /* 居中内容 */
  padding: 20px;
}

/* 在小屏幕上应用不同的样式 */
@media (max-width: 768px) {
  .content-tab {
    padding: 10px;
  }

  .content-tab h1 {
    font-size: 24px;
    /* 标题字体大小适应小屏幕 */
  }

  .content-tab p {
    font-size: 16px;
    /* 段落字体大小适应小屏幕 */
  }
}

.content-tab h1 {
  font-size: 36px;
  line-height: 1.2;
  padding-bottom: 1em;
}

.content-tab p {
  font-size: 18px;
  line-height: 1.5;
  padding-bottom: 1em;
}

.content-tab img {
  max-width: 100%;
  /* 图片宽度最大不超过父元素 */
  height: auto;
  /* 高度自动调整 */
}



.content-tab.active {
  display: block;
}

.button {
  display: inline-block;
  padding: 0.5rem 2rem;
  /* 上下留0.5rem，左右留2rem */
  background: #FFFFFF;
  color: #333;
  text-decoration: none;
  /* 取消默认的下划线 */
  border: none;
  border-radius: 20px;
  box-shadow: inset 4px 4px 10px rgba(96, 96, 96, 0.25);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  /* 让文字垂直居中 */
  transition: box-shadow 0.3s ease;
  margin-bottom: 2rem;
}

.button:hover {
  box-shadow: 4px 4px 10px rgba(96, 96, 96, 0.25);
}