body {
  position: relative;
}

/* .logo-container {
  width: 10%;
  aspect-ratio: 1;
  overflow: hidden;
  margin: 150px auto;
}

.logo-container > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: logo-rotate linear 5s infinite;
} */

@keyframes logo-rotate {
  from {
    transform: rotateZ(0deg);
    filter: hue-rotate(0deg);
  }
  to {
    transform: rotateZ(360deg);
    filter: hue-rotate(360deg);
  }
}

.purpose-container {
  /* background-color: rgb(134, 76, 0); */
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  overflow: auto;
}

.purpose-container::before {
  position: absolute;
  content: "";
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: no-repeat center/cover url("/Images/Purpose/宗旨页背景.jpg");
  filter: brightness(50%);
}

.purpose {
  /* background-color: rgb(15, 88, 90); */
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 25px;
  position: relative;
}

.purpose img {
  -webkit-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
}

.purpose > p:nth-child(1) {
  /* background-color: rgb(9, 100, 185); */
  text-align: center;
  font-size: 4rem;
  font-weight: bolder;
  color: rgb(74, 170, 248);
  max-width: 100%;
  transition: 0.25s;
  /* display: flex;
  align-items: center; */
}

.purpose > p:nth-child(1) img {
  height: 65px;
  aspect-ratio: 1;
  vertical-align: baseline;
  transform: translateY(10%);
  -webkit-mask-size: 100%;
  mask-size: 100%;
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
}

.pp-01 > p:nth-child(1) > .logo {
  vertical-align: middle;
}

.pp-01 > p:nth-child(1) > .logo > img {
  height: 1.2em;
}

.purpose > p:nth-child(1) img[alt="永恒Logo"] {
  animation: logo-rotate linear 5s infinite;
}

.purpose > p:nth-child(1) > img:nth-of-type(1) {
  margin: 0 5px 0 0;
  -webkit-mask-image: url(/Images/Index-Images/永.png);
  mask-image: url(/Images/Index-Images/永.png);
}

.purpose > p:nth-child(1) > img:nth-of-type(2) {
  -webkit-mask-image: url(/Images/Index-Images/恒.png);
  mask-image: url(/Images/Index-Images/恒.png);
}

@keyframes logo-rotate {
  from {
    transform: rotateZ(0deg);
    filter: hue-rotate(0deg);
  }
  to {
    transform: rotateZ(360deg);
    filter: hue-rotate(360deg);
  }
}

.explain-list a {
  color: aquamarine;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.pp-01 li > span:not(.技术, .正斜杠) {
  font-size: 1.2em;
  font-weight: bolder;
  color: tomato;
}

.技术 {
  font-family: Consolas, monospace;
  font-size: 1.1em;
  color: rgb(76, 131, 193);
}

.pp-01 li > em {
  color: rgb(248, 241, 100);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.purpose > p:nth-child(1) span {
  color: orange;
  font-size: 1.1em;
}

.pp-05 > p:nth-child(1) {
  text-align: center;
  line-height: 1.15em;
}

.purpose a:hover {
  filter: hue-rotate(60deg) brightness(70%);
  -webkit-user-select: none;
  user-select: none;
}

.purpose::before {
  position: absolute;
  width: 100%;
  height: 100%;
  content: "";
  left: 0;
  top: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: -1;
  /* filter: opacity(0.55) blur(3px); */
}

.explain-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.explain-list > li {
  font-size: 1.5rem;
  padding: 0 0 0 0.5rem;
}

.explain-list > li > strong {
  color: rgb(123, 255, 131);
}

.pp-01 > .explain-list > li {
  list-style-type: "\1F47B";
}

.pp-02 > .explain-list > li {
  list-style-type: "\1f44d";
}

.pp-03 > .explain-list > li {
  list-style-type: "\1f37a";
}

.pp-04 > .explain-list > li {
  list-style-type: "\1F525";
}

.pp-05 > .explain-list > li {
  list-style-type: "\260E";
}

.pp-04 > p:nth-child(1) a {
  position: relative;
}

.pp-04 > p:nth-child(1) a:hover {
  filter: hue-rotate(0);
}

.pop-up {
  visibility: hidden;
  opacity: 0;
  width: 90px;
  height: 90px;
  border-radius: 100px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: -50%;
  z-index: -1;
  font-size: 1rem !important;
  color: white !important;
  background: linear-gradient(#111, #252525);
  transition: opacity 0.5s ease-out, top 0.5s ease-out, box-shadow 0.25s ease-out;
}

.pop-up:hover {
  box-shadow: inset 0px 1px 1px 0 rgb(149, 149, 149);
}

.pp-04 > p:nth-child(1) a:hover .pop-up {
  visibility: visible;
  opacity: 1;
  top: -110%;
}

.selector-outer {
  width: 500px;
  height: 50px;
  padding: 2px;
  background-color: burlywood;
  background: linear-gradient(135deg, burlywood 30%, gold 90%);
  position: fixed;
  bottom: 2.5%;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 50px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 1px 1px 10px 0 rgba(0, 0, 0, 0.5);
}

.selector-inner {
  width: 100%;
  height: 100%;
  border-radius: 50px;
  /* background-color: rgb(6, 97, 127); */
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3px;
  position: relative;
}

.选择器浮动层 {
  position: absolute;
  height: 100%;
  border-radius: 50px;
  background-color: black;
  left: 0;
  z-index: -1;
  /* transition: 0.25s; */
  visibility: hidden;
  filter: opacity(0);
}

.宗旨选择器 {
  flex-grow: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 50px;
  height: 100%;
  color: black;
  -webkit-user-select: none;
  user-select: none;
  transition: 0.2s;
  /* position: relative; */
}

.宗旨选择器:hover {
  cursor: url("/Images/Common/鼠标-指向.cur"), pointer;
  background-color: rgba(0, 0, 0, 0.25) !important;
}

/* <!-- ------------------ ↓ 响应式设计 ------------------- --> */
@media screen and (max-width: 1000px) {
  .logo-container {
    width: 200px;
  }

  .purpose-container {
    max-width: none;
    width: 100%;
  }

  .purpose {
    width: 100%;
  }

  .purpose > p:nth-child(1) {
    font-size: 1.5rem;
  }

  .purpose > p:nth-child(1) img {
    height: 25px;
  }

  .explain-list {
    width: 70%;
  }

  .explain-list > li {
    font-size: 1em;
    width: 100%;
  }

  .selector-outer {
    width: 300px;
    height: 35px;
    font-size: 0.6rem;
  }
}

/* <!-- ------------------ ↑ 响应式设计 ------------------- --> */