h1 {
    font-size: 48px;
    background: linear-gradient(90deg, #ff6b6b, #feca57, #48dbfb, #ff9ff3, #ff6b6b);
    background-size: 300% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: flow 4s linear infinite;
    text-align: center;
}
@keyframes flow {
  0%   { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

.java-download {
    text-decoration: none;
}

#B2{
  text-align: center;
  border-top:  solid 2px #999;
}

.C1{
  color: #666;
}


.B4{
  text-align: center;
}

.C2{
  font-size: 16px;
  text-align: center;
  border-top: solid 1.5px #999;
  flex: 1;
}

.C3{
  font-size: 16px;
  text-align: center;
  flex: 1;
}

.D0{
    display: flex;
    flex-direction: row;
    gap: 14px;
    margin: 0 20px;
}

.D1{
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
    background: #fff;
    border: 1px solid #e3e6ea;
    border-radius: 10px;
    padding: 16px 20px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.2s, border-color 0.2s;
}

.D1:hover {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-color: #ccc;
}

.B2{
    text-align: center;
    flex: 1;
    font-size: 14px;
}

.B2 ul{
    list-style-position: inside;
    padding-left: 0;
}

.E1{
  font-size: 16px;
}

.E0{
  font-size: 16px;
}

.E1{
  margin-left: 60px;
  margin-right: 60px;
  margin: 0 auto;
}

.E2{
  text-align: center;
  margin-top: 10px;
}

.E3{
  font-size: 16px;
  text-align: center;
  flex: 1;

}

.B1{
  text-align: center;
  flex: 1;
  font-size: 14px;
}

.B1-0{
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 0 0 calc(50% - 7px);
    background: #fff;
    border: 1px solid #e3e6ea;
    border-radius: 10px;
    padding: 16px 20px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.2s, border-color 0.2s;
}

.B1-0:hover {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-color: #ccc;
}

.B1-1{
      display: flex;
    flex-direction: row;
    gap: 14px;
    margin: 0 20px;
    justify-content: center;
}

.B1-2{
  margin-top: 20px;
}

.F2{
  margin-left: 20px;
  margin-right: 20px;
  margin: 0 auto;
}

.F3{
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 14px;
  margin: 10px 40px;
  justify-content: center;
}

.F4{
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 0 0 200px;
    text-decoration: none;
    color: #333;
    background: #fff;
    border: 1px solid #e3e6ea;
    border-radius: 10px;
    padding: 16px 20px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.2s, border-color 0.2s;
}

.F4:hover {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-color: #ccc;
}

.F5{
    text-align: center;
    flex: 1;
    font-size: 14px;
}

.F6{
    margin: 4px 0 0;
    color: #999;
    font-size: 12px;
}

.F5 p img{
    width: 24px;
    height: 24px;
    vertical-align: middle;
    margin-right: 4px;
}

.F5 ul{
    list-style-position: inside;
    padding-left: 0;
}

.F1{
  margin-left: 40px;
  margin-right: 40px;
  margin: 0 auto;
}

/* ===== 手机/窄屏适配 ===== */
@media (max-width: 600px) {
    .F3 {
        margin: 10px 16px;
    }
    .F4 {
        flex: 0 0 calc(50% - 7px);
    }
}

/* ===== 刷新按钮 + 跳转链接(条状,各占一半) ===== */
.G1 {
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

#refreshBtn,
.B1 a {
    flex: 1;
    text-align: center;
    padding: 10px 0;
    border-radius: 6px;
    text-decoration: none;
    font-size: 15px;
    box-sizing: border-box;
}

#refreshBtn {
    background: #4a90d9;
    color: #fff;
    border: none;
    cursor: pointer;
}

#refreshBtn:hover {
    background: #3a7bc8;
}

.B1 a {
    background: #c74634;
    color: #fff;
}

.B1 a:hover {
    background: #a83626;
}

.Z1{
  text-align: center;
  margin-top: 10px;
  color: #666;
  font-size: 10px;
}