.xqgk{
    width: 100%;
    max-width: 1300px;
    margin: 4% auto 0 auto;
    padding: 2rem;
}
.xqgk_t{
    text-align: center;
}
.title-c {
    display: flex;
    gap: 1.5rem;
    margin: 0 auto 1.5rem;
    width: 85%; 
}
.title-item {
    flex: 1;
    padding: 0.75rem 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #334155;
    font-weight: 500;
    font-size: 22px;
    text-align: center;
    background-image: url(../images/gk02.png);
    background-size: 100% 100%;
}

.title-item.active {
    background-image: url(../images/gk01.png);
    background-size: 100% 100%;
    color: #345a99;
    font-size: 22px;
}
.paragraphs-c {
    width: 100%;
}
.paragraph-item {
    display: none;
}
.paragraph-item:first-child {
    display: block;
}
.paragraph-c {
    height: 250px;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 1rem;
    line-height: 1.6;
    color: #1e293b;
    word-wrap: break-word;
    word-break: break-all;
}
.paragraph-c p{
    text-indent: 2em;
    line-height: 2em;
}
.gk_tit{
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between; 
    font-size: 22px;
    line-height: 40px;
}
.gk-item {
    text-align: center;
    padding: 16px 20px;
    background-color: #f5faff;
    border: 1px solid #98bff8;
    white-space: nowrap;
    transition: all 0.3s ease;
}
.gk-item:hover {
    background-color: #325b8f;
    cursor: pointer;
}
.gk-item a{
    color: #325b8f ;
}
.gk-item:hover a{
    color: white;
}
.gk_pho{
    width: 100%;
    max-width: 1300px;
    margin: 3% auto 0 auto;
}
.gk_pho ul {
    display: flex; 
    justify-content: space-between; 
    width: 100%; 
  }
.gk_pho li{
    flex-shrink: 0;
    width: 32%;
    overflow: hidden;
}
.gk_pho img {
    display: block; 
    object-fit: cover;
    width: 100%;
    transform-origin: center; 
}
.gk_pho img:hover {
  transform: scale(1.08); 
}
.mllk{
    width: 100%;
    max-width: 1300px;
    margin: 4% auto 5% auto;
}
.dyts{
    width: 173px;
    height: 40px;
    background:url(../images/diytse.png) no-repeat center bottom;
    font-size: 22px;
    color: #325E93;
    line-height: 40px;
    text-align: center;
    margin-top: 25px;
}
.mllk_main{
    width: 100%;
    height: 360px;
    background: url(../images/dytsbg.jpg) no-repeat;
    background-size: cover;
    overflow: hidden;
    margin-top: 2%;
    display: flex;
    gap: 20px;
}
 /* 左侧导航区域 */
 .left-panel {
    width: 20%;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 20px;
  }

  .main-nav {
    list-style: none;
    font-size: 26px;
  }

  .main-nav-item {
    padding: 25px 10px;
    margin-bottom: 30px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    text-align: center;
    color: #333;
    position: relative;
    background-color: rgba(255, 255, 255, 0.284);
  }

  .main-nav-item:hover, .main-nav-item.active {
    background-color: #325E93;
    color: white;
    transform: translateX(5px);
  }

  .main-nav-item::after {
    content: ">";
    position: absolute;
    right: 15px;
    transition: transform 0.3s ease;
  }

  .main-nav-item:hover::after, .main-nav-item.active::after {
    transform: translateX(3px);
  }

  /* 右侧内容区域 */
  .right-panel {
    width: 75%;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 2% 0 0 5%;
  }

  .content-section {
    display: none;
    animation: fadeIn 0.4s ease;
  }

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

  .content-title {
    font-size: 24px;
    color: #333;
    margin-bottom: 30px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
  }

  .sub-titles {
    margin: 2% auto 0 auto;
  }

  .sub-title {
    display: inline-block;
    margin: 0 3% 2% 0;
    font-size: 18px;
    cursor: pointer;
    font-weight: 500;
    transition: color 0.3s ease;
    height: 56px;
    width: 155px;
    text-align: center; 
    padding-top: 1%;
  }

  .sub-title.active, .sub-title:hover {
    color: white;
    background:url(../images/nbbg.png) no-repeat; 
    text-decoration: none;
  }

  .sub-paragraphs {
    width: 85%; 
  }

  .sub-paragraph {
    padding: 15px;
    line-height: 2.2;
    display: none; 
    text-indent: 2em;
  }
  .sub-paragraph a{
    color:#4167a6;
  }

  .sub-paragraph:first-child {
    display: block;
  }
  .sub-paragraph-whyc{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    text-indent: 0;
  }
  .whyc-item a{
    color: #333333;
  }
  .whyc-item a:hover{
    color: #337ab7;
  }
  .hyfz{
    margin:3% auto 0 auto;
    width: 100%;
    max-width: 1300px;
    background: url(../images/book_down.png) no-repeat center top;
    background-size: 100%;
    padding: 1.5% 0 3% 0;
  }
  .hyfz_t{
    width: 173px;
    height: 40px;
    background:url(../images/diytse.png) no-repeat center bottom;
    font-size: 22px;
    color: #325E93;
    line-height: 40px;
    text-align: center;
    margin:0 auto 3% auto;
}

.hyfz_p ul {
  display: flex; 
  justify-content: space-between; 
  width: 80%; 
  margin: 0 auto;
}
.hyfz_p li{
  flex-shrink: 0;
  width: 20%;
  overflow: hidden;
}
.hyfz_p img {
  display: block; 
  object-fit: cover;
  width: 100%;
  transform-origin: center; 
}
.hyfz_p p{
  color: white;
  background-color: #355E92;
  line-height: 2;
  width: 60%;
  text-align: center;
  margin: 0 auto 8% auto;
}
.custom-rectangle {
  width: 90%; 
  height: 10px;
  background-color: #844c0e;
  box-shadow: -5px 5px 4px 2px rgba(88, 51, 9, 0.53);
  margin: 0 auto;
}


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

  @media (max-width: 768px) {
    .xqgk {
      width: 95%;
      padding:0;
      margin: 2% auto 0;
  }
  
  .title-c {
      width: 100%;
      gap: 0.5rem;
      overflow-x: auto;
      padding-bottom: 0.5rem;
  }
  
  .title-item,
  .title-item.active {
      font-size: 16px;
      padding: 0.5rem 0.75rem;
      white-space: nowrap; 
  }
  
  .paragraph-c {
      height: 200px;
      padding: 0.75rem;
  }
  
  .paragraph-c p {
      text-indent: 1.5em;
      line-height: 1.8em;
      font-size: 14px;
  }
    .gk_tit {
      flex-direction: column;
      font-size: 18px;
      justify-content: flex-start;
      margin-top: 5%;
  }
  
  .gk-item {
      padding: 10px 15px;
      white-space: normal;
      width: 100%;
      margin-bottom: 10px;
      box-sizing: border-box;
  }
  
  .gk_tit .gk-item:last-child {
      margin-bottom: 0;
  }
  

  .dyts {
    width: 140px;
    height: 35px;
    font-size: 18px;
    margin: 15px auto;
  }

  .mllk_main {
    flex-direction: column;
    height: auto;
    gap: 10px;
    margin-top: 5%;
  }

  .left-panel {
    width: 100%;
    padding: 10px;
  }

  .main-nav {
    font-size: 20px;
    display: flex;
    justify-content: space-around;
    padding: 0;
  }

  .main-nav-item {
    padding: 10px 5px;
    margin-bottom: 0;
    flex: 1;
    margin: 0 5px;
  }

  .main-nav-item::after {
    right: 5px;
  }

  .right-panel {
    width: 100%;
    padding: 5% 3%;
  }

  .sub-title {
    width: 110px;
    height: 45px;
    font-size: 16px;
    margin: 0 2% 3% 0;
    padding-top: 3%;
  }

  .sub-paragraphs {
    width: 94%;
  }

  .sub-paragraph {
    padding: 10px 5px;
    line-height: 2;
    font-size: 14px;
  }

  .sub-paragraph-whyc {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    font-size: 14px;
  }
  .hyfz {
    margin: 5% auto 0 auto;
    padding: 3% 0 6% 0;
    background-size: 100% 100%; 
    background-position: center top; 
  
  }

  .hyfz_t {
    width: 140px; 
    height: 34px; 
    font-size: 18px; 
    line-height: 34px; 
    margin: 0 auto 6% auto; 
  }

  .hyfz_p ul {
    width: 92%; 
    flex-wrap: wrap; 
    gap: 4%; 
    padding: 0 4%;
  }

  .hyfz_p li {
    width: 48%; 
    margin-bottom: 6%; 
  }

  .hyfz_p p {
    width: 75%; 
    font-size: 14px; 
    line-height: 1.9; 
    margin: 0 auto 6% auto; 
  }

  .custom-rectangle {
    width: 92%; 
    height: 8px; 
    box-shadow: -3px 3px 3px 1px rgba(88, 51, 9, 0.53); 
  }
  }
 
 
  @media (max-width: 480px) {
    .main-nav {
      font-size: 16px;
    }

    .sub-title {
      width: 90px;
      font-size: 14px;
      margin: 0 1% 3% 0;
    }

    .sub-paragraph-whyc {
      grid-template-columns: 1fr;
    }
  }