ul{
  margin-top: 0;
  margin-bottom: 0;
}

.container {
  display: grid;
    grid-template-columns: 1fr 1024px 1fr;
    grid-template-rows: 100px 1fr 64px;
    gap: 0px 0px;
    grid-auto-flow: row;
    grid-template-areas:
        "top top top"
        "sidebar-left main sidebar-right"
        "footer footer footer";
}

.main {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr;
  grid-template-rows: 64px 1fr;
  gap: 0px 0px;
  grid-template-areas:
    "logo logo logo . . . . nav nav nav nav nav nav nav nav"
    "item1 item1 item1 item1 item1 item1 item1 item1 item1 item1 item1 item1 item1 item2 item2";
  grid-area: main;
}

.item1 {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 56px 64px 1fr 66px;
  gap: 0px 0px;
  grid-auto-flow: row;
  grid-template-areas:
    "."
    "piece1"
    "main-box"
    ".";
  grid-area: item1;
}

.main-box {
  display: grid;
  grid-template-columns: 1fr 3fr;
  grid-template-rows: 1fr;
  gap: 0px 0px;
  grid-auto-flow: row;
  grid-template-areas: "piece3 casebox";
  background: #fff;
  padding: 12px;
  grid-area: main-box;
}

.piece3 {
  display: grid;
  grid-template-columns: 35px 1fr 1fr 1fr 1fr 35px;
  grid-template-rows: 10px 1fr 1fr 1fr 1fr 70px;
  gap: 0px 0px;
  grid-auto-flow: row;
  grid-template-areas:
    ". piece4 piece4 piece4 piece4 ."
    ". letter_about letter_years letter_years letter_years letter_years"
    ". . letter_years letter_years letter_years letter_years"
    ". . letter_years letter_years letter_years letter_years"
    ". . letter_years letter_years letter_years letter_years"
    ". letter_butterfly letter_butterfly letter_butterfly letter_butterfly .";
  grid-area: piece3;
  background: #1869ff;
}

.casebox {
  display: grid;
  grid-template-columns: 30px 1fr 30px;
  grid-template-rows: 30px 1fr 30px;
  gap: 0px 0px;
  grid-template-areas:
      ". . ."
      ". caselist ."
      ". . .";
  background: #fff;
  border: 10px solid #57a5f8;
  box-shadow: 10px 10px 20px rgb(0 29 84 / 30%);
  grid-area: casebox;
}

.caselist {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr 40px;
  gap: 0px 0px;
  grid-auto-flow: row;
  grid-template-areas:
      "listbox"
      "pagin";
  grid-area: caselist;
}

.listbox {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr 1rem 1fr;
  /* gap: 1rem 0px; */
  grid-auto-flow: row;
  grid-template-areas:
      "firstbox"
      "line"
      "secondbox";
  grid-area: listbox;
}

.line{
  grid-area: line;
}

.hhr {
  border-bottom: 1px dashed #d4cfcf;
  height: 2px;
  width: 100%;
}

.firstbox {
  display: grid;
  grid-template-columns: 3fr 7fr;
  grid-template-rows: 3fr 7fr;
  gap: 0px 0px;
  grid-auto-flow: row;
  grid-template-areas:
    ". ."
    ". .";
  grid-area: firstbox;
  text-decoration: none;
}

.firstbox:hover,
.secondbox:hover {
  -webkit-transition: all 0.5s ease-in-out 0.1s;
  -moz-transition: all 0.5s ease-in-out 0.1s;
  -ms-transition: all 0.5s ease-in-out 0.1s;
  -o-transition: all 0.5s ease-in-out 0.1s;
  transition: all 0.5s ease-in-out 0.1s;
  transform: scale(1.05, 1.05);
}

.secondbox div:first-child,
.firstbox div:first-child {
  grid-area: 1/1/3/2;
  color: #1869ff;
}

.idea_title {
  align-self: center;
  grid-area: 1/2/2/3;
  color: #191919;
  font-size: 16px;
  font-weight: 600;
}

.idea_content {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  color: #191919;
  font-size: 14px;
}

.secondbox {
  display: grid;
  grid-template-columns: 3fr 7fr;
  grid-template-rows: 3fr 7fr;
  gap: 0px 0px;
  grid-auto-flow: row;
  grid-template-areas:
    ". ."
    ". .";
  grid-area: secondbox;
  text-decoration: none;
}

.casespec {
  text-decoration: none;
}

.case_img {
  padding: 10px;
}

.case_img img {  
  max-width: 100%; /* 确保图片宽度不会超过其容器的宽度 */  
  height: auto; /* 保持图片的原始高度 */  
  object-fit: contain; /* 保持图片的长宽比，同时填充元素的整个内容框 */  
}

.case_title {
  padding: 4px;
  font-weight: 600;
  color: #3e3e3e;
}

.piece4 {
  background: #9bcc25;
  grid-area: piece4;
}

.letter_butterfly {
  width: 100px;
  height: 47px;
  background: url(../images/letter_butterfly.png) no-repeat;
  grid-area: letter_butterfly;
}

.letter_about {
  width: 14px;
  height: 45px;
  background: url(../images/letter_about.png) no-repeat;
  justify-self: end;
  align-self: end;
  grid-area: letter_about;
}

.letter_years {
  width: 94px;
  height: 249px;
  justify-self: center;
  align-self: center;
  background: url(../images/letter_years.png) no-repeat;
  grid-area: letter_years;
}

.piece1 {
  display: grid;
  grid-template-columns: 80px 1fr 160px;
  grid-template-rows: 1fr;
  gap: 0px 0px;
  grid-auto-flow: row;
  grid-template-areas: ". . .";
  grid-area: piece1;
}

.piece1 div {
  background: url(../images/dec-point2.png) repeat;
  grid-area: 1/2/2/3;
}

.item2 {
  display: grid;
  grid-template-columns: 1fr 50px;
  grid-template-rows: 200px 1fr 184px;
  gap: 0px 0px;
  grid-auto-flow: row;
  grid-template-areas:
    ". ."
    "piece2 ."
    ". .";
  grid-area: item2;
}

.piece2 {
  background: url(../images/dec-point2.png) repeat;
  grid-area: piece2;
}

.weapon {
  background: url(../images/weapon.png) no-repeat;
  width: 496px;
  height: 748px;
  justify-self: end;
  align-self: end;
  z-index: -1;
  grid-area: 2 / 2 / 3 / 4;
}

@media screen and (min-width: 1920px) {
  .container {
    height: 100vmin;
  }
  /* .bottom-line {
    position: relative;
    height: 2px;
    background-color: #1869ff;
    bottom: 0px;
  } */
}