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

body{
  display: flex;
  flex-direction: column;
  background-color: rgb(0, 0, 0);
  font-family: Arial, sans-serif;
  transition: background-color 0.3s, color 0.3s;
  position: relative;
}

p{
  font-weight: 100;
  margin: 0 80px;
}

.logo-container {
  position: relative;
  margin-top: 50px;
  width: 100%;
  display: flex;
  justify-content: center;
}

.logo-container img {
  width: 120px; /* 定义 logo 的宽度 */
  height: auto; /* 根据宽度自动调整高度 */
}



.social-buttons {
  position: relative;
  margin-top: 50px;
  display: flex;
  flex-direction: column;
  align-items: center;
  
}

.social-button {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center; /* 文字水平居中 */

  min-width: 240px;
  margin-bottom: 10px;
  padding: 15px 20px;
  background-color: #000000; /* 荧光颜色 */
  border: 1px solid #ffffff; /* 初始无描边 */
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s ease;

}

.social-button img {
  width: 14px; /* 图标大小 */
  margin-right: 10px;
}

.social-button span {
  color: #ffffff; /* 文字颜色 */
  font-weight: bold;
  
}

.social-button:hover {
  border-color: #ffffff; /* hover时描边颜色 */
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.8); /* hover时发光效果 */
}

.social-button a {
  text-decoration: none; /* 去掉链接的下划线 */
  color: inherit; /* 保持链接文字的默认颜色 */
  text-align: center; /* 文字水平居中 */

}

.social-button a:hover {
  text-decoration: underline; /* 鼠标悬停时显示下划线 */
}


.tagline {
  position: relative;
  margin-top: 20px;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
}

:root{
  --index: calc(1vw + 1vh);
  --transition: cubic-bezier(.1, .7, 0, 1);
}

body{
  background-color: #000000;
}

.wrapper{
  display: flex;
  align-items: center;
  justify-content: center;
  height: 70vh;
}

.items{
  display: flex;
  gap: 0.4rem;
  perspective: calc(var(--index) * 35);
}

.item{
  width: calc(var(--index) * 3);
  height: calc(var(--index) * 12);
  background-color: #222;
  background-size: cover;
  background-position: center;
  cursor: pointer;
  filter: grayscale(1) brightness(.5);
  transition: transform 1.25s var(--transition), filter 3s var(--transition), width 1.25s var(--transition);
  will-change: transform, filter, rotateY, width;
}

.item::before, .item::after{
  content: '';
  position: absolute;
  height: 100%;
  width: 20px;
  right: calc(var(--index) * -1);
}

.item::after{
  left: calc(var(--index) * -1);
}

.items .item:hover{
  filter: inherit;
  transform: translateZ(calc(var(--index) * 10));
}

/*Right*/

.items .item:hover + *{
  filter: inherit;
  transform: translateZ(calc(var(--index) * 8.5)) rotateY(35deg);
  z-index: -1;
}

.items .item:hover + * + *{
  filter: inherit;
  transform: translateZ(calc(var(--index) * 5.6)) rotateY(40deg);
  z-index: -2;
}

.items .item:hover + * + * + *{
  filter: inherit;
  transform: translateZ(calc(var(--index) * 2.5)) rotateY(30deg);
  z-index: -3;
}

.items .item:hover + * + * + * + *{
  filter: inherit;
  transform: translateZ(calc(var(--index) * .6)) rotateY(15deg);
  z-index: -4;
}


/*Left*/

.items .item:has( + :hover){
  filter: inherit;
  transform: translateZ(calc(var(--index) * 8.5)) rotateY(-35deg);
}

.items .item:has( + * + :hover){
  filter: inherit;
  transform: translateZ(calc(var(--index) * 5.6)) rotateY(-40deg);
}

.items .item:has( + * + * + :hover){
  filter: inherit;
  transform: translateZ(calc(var(--index) * 2.5)) rotateY(-30deg);
}

.items .item:has( + * + * + * + :hover){
  filter: inherit;
  transform: translateZ(calc(var(--index) * .6)) rotateY(-15deg);
}

.items .item:active, .items .item:focus {
width: 18vw;
filter: inherit;
z-index: 100;
transform: translateZ(calc(var(--index) * 10));
  margin: 0 .45vw;
}


.stars {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.star {
  position: absolute;
  background-color: white;
  border-radius: 50%;
  opacity: 0.8;
  pointer-events: none;
  animation: moveStars 20s linear infinite;
}

@keyframes moveStars {
  from {
      transform: translateY(100%);
  }
  to {
      transform: translateY(-100%);
  }
}

.footer {
  background-color: #000000;
  color: #ffffff;
  padding: 20px;
  text-align: center;
  margin-top: auto; /* 让 footer 粘在底部 */
}

.footer a {
  color: #ffffff;
  text-decoration: none;
  transition: color 0.3s;
  margin-bottom: 10px;
}

.footer a:hover {
  color: #CCCCCC; /* 悬停时颜色 */
}