#r1 {
  min-height: 1000px;
}
.question-title {
  display: flex;
  justify-content: center;
  margin: 130px 0 50px;
  padding: 100px 10px 0;
  font-weight: bold;
  color: #d70917;
  > * {
    font-size: 44px !important;
  }
  @media screen and (max-width: 700px) {
    > * {
      font-size: 25px !important;
    }
  }
}
@media screen and (max-width: 700px) {
  .question-title {
    margin: 0 0 50px;
  }
}

.question {
  padding: 0 5%;
  width: 100%;
}
@media screen and (max-width: 700px) {
  .question {
    padding: 0 5%;
    width: 100%;
  }
}

.tabs-container {
  border-bottom: 1px solid #e1e4e8;
}
@media screen and (max-width: 700px) {
  .tabs-container {
    padding: 0 10px;
  }
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tab {
  padding: 8px 0px;
  cursor: pointer;
  font-weight: 600;
  color: #555;
  font-size: 15px;
  border-bottom: 3px solid transparent;
  transition: all 0.3s ease;
  margin-right: 20px;
}
@media screen and (max-width: 700px) {
  .tab {
    padding: 5px;
    margin-right: 3px;
  }
}

.tab:hover {
  color: #d70917;
}

.tab.active {
  color: #d70917;
  border-bottom: 3px solid #d70917;
}

.content-container {
  padding: 30px;
}

.content-section {
  display: none;
}

.content-section.active {
  display: block;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.markdown-content {
  line-height: 1.8;
}

.markdown-content h2 {
  margin: 25px 0 15px;
  padding-bottom: 10px;
  font-size: 20px;
}

.markdown-content h2 .circle {
  font-weight: normal;
  margin-right: 10px;
  font-size: 20px;
}

.markdown-content h3 {
  font-size: 18px;
  margin: 20px 0 12px;
}
.markdown-content p,
.markdown-content span {
  font-size: 16px;
  margin-bottom: 16px;
}
@media screen and (max-width: 1000px) {
  .markdown-content h2 {
    font-size: 18px;
  }
  .markdown-content h3 {
    font-size: 16px;
  }
  .markdown-content p,
  .markdown-content span {
    font-size: 14px;
  }
}
@media screen and (max-width: 700px) {
  .markdown-content h2 {
    font-size: 16px;
  }
  .markdown-content h3 {
    font-size: 14px;
  }
  .markdown-content p,
  .markdown-content span {
    font-size: 12px;
  }
}
.markdown-content code {
  background-color: #f6f8fa;
  border-radius: 4px;
  padding: 2px 6px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.9em;
}

.markdown-content pre {
  background-color: #f6f8fa;
  border-radius: 6px;
  padding: 16px;
  overflow: auto;
  margin: 20px 0;
}

.markdown-content pre code {
  background: none;
  padding: 0;
}

.markdown-content blockquote {
  border-left: 4px solid #dfe2e5;
  color: #6a737d;
  margin: 20px 0;
  padding-left: 16px;
}

.markdown-content ul,
.markdown-content ol {
  margin: 16px 0;
  padding-left: 30px;
}

.markdown-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

.markdown-content th,
.markdown-content td {
  border: 1px solid #dfe2e5;
  padding: 12px;
  text-align: left;
}

.markdown-content th {
  background-color: #f6f8fa;
  font-weight: 600;
}

.markdown-content tr:nth-child(even) {
  background-color: #f9f9f9;
}

.manual {
  padding: 15px 25px;
  border: 0;
  border-radius: 30px;
  background: #e5e5e5;
  color: #555;
  margin-right: 20px;
}

.manual:hover {
  background-color: #d70917;
  color: #fff;
  cursor: pointer;
}

.manual i {
  margin-right: 7px;
}

.video {
  padding: 20px 35px;
  border-radius: 30px;
  background: #e5e5e5;
  color: #555;
}

.video:hover {
  background-color: #d70917;
  color: #fff;
  cursor: pointer;
}

.video i {
  margin-right: 10px;
}