:root {
  --二级菜单色: rgb(47, 95, 69);
  --光标-默认: url("/Images/Common/鼠标-默认.cur"), auto;
  --光标-手指: url("/Images/Common/鼠标-指向.cur"), pointer;
  --中文字体: "Noto Sans SC", 微软雅黑，sans-serif;
  --代码字体: "JetBrains Mono", Consolas, monospace;
  --中文代码混合字体: "JetBrains Mono", Consolas, "Noto Sans SC", 微软雅黑, sans-serif;;
}

.top-banner {
  width: 100%;
  /* overflow: hidden; */
  top: 0;
  position: fixed;
  padding: 0 5vw;
  background-color: rgba(25, 28, 31, 0.8);
  height: 50px;
  display: flex;
  justify-content: space-between;
  z-index: 9999;
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  box-shadow: inset 0 -1px 0 0 #2f353a;
  font-family: var(--中文字体);
}

.导航左区 {
  width: fit-content;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 50px;
}

.nav-to-index {
  /* background-color: #00a060; */
  display: flex;
  max-width: 250px;
  height: 100%;
  overflow: hidden;
  position: relative;
  justify-content: center;
  align-items: center;
  padding: 0 1%;
  -webkit-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
}

.nav-to-index img {
  -webkit-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
}

.logo {
  height: 70%;
  object-fit: cover;
  transition: 0.3s;
  animation: logo-rotate linear 5s infinite;
}

@keyframes logo-rotate {
  from {
    transform: rotateZ(0deg);
    filter: hue-rotate(0deg) drop-shadow(2px 2px 5px rgba(0, 0, 0, 0.5));
  }
  to {
    transform: rotateZ(360deg);
    filter: hue-rotate(360deg) drop-shadow(2px 2px 5px rgba(0, 0, 0, 0.5));
  }
}

#logo-text {
  width: 80px;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

#logo-text-永,
#logo-text-恒 {
  width: 30px;
  height: 55%;
  overflow: hidden;
  filter: drop-shadow(2px 2px 5px #000);
}

#logo-text-永 > img,
#logo-text-恒 > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
}

#logo-text-永 > img {
  -webkit-mask-image: url(/Images/Index-Images/永.png);
  mask-image: url(/Images/Index-Images/永.png);
}

#logo-text-恒 > img {
  -webkit-mask-image: url(/Images/Index-Images/恒.png);
  mask-image: url(/Images/Index-Images/恒.png);
}

.nav-to-index:hover > .logo {
  filter: hue-rotate(140deg);
}

.nav-to-index::before {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  content: "";
  background: linear-gradient(90deg, rgba(169, 228, 178, 0) 10%, rgb(255, 255, 255) 50%, rgba(209, 253, 215, 0) 50%);
  background-size: 210% 100%;
  background-position: 105% 0;
  transition: 250ms;
}

.nav-to-index:hover::before {
  animation: 背景渐变刷墙 2s linear 1s infinite;
}

.nav-to-index::after {
  width: 100%;
  height: 4px;
  position: absolute;
  content: "";
  left: 0;
  bottom: 0;
  background-color: rgb(214, 193, 75);
  transform: scaleY(0);
  transform-origin: bottom center;
  transition: 0.25s;
}

.nav-to-index:hover::after {
  transform: scaleY(1);
}

@keyframes 背景渐变刷墙 {
  from {
    background-position: 105% 0;
    filter: grayscale(1) brightness(0);
  }
  to {
    background-position: -95% 0;
    filter: grayscale(1) brightness(1);
  }
}

.导航功能区 {
  height: 100%;
  /* background-color: brown; */
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 20px;
}

.菜单区 {
  height: 100%;

  .导航1级菜单列表 {
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 50px;

    .导航1级菜单 {
      height: 100%;
      width: 120px;
      display: flex;
      flex-direction: column;
      /* align-items: center; */

      .导航1级文本 {
        flex-shrink: 0;
        height: 100%;
        width: 100%;
        border-top: solid 8px transparent;
        border-bottom: solid 8px transparent;
        border-left: solid 12px transparent;
        border-right: solid 12px transparent;
        border-radius: 5px;
        display: flex;
        justify-content: center;
        align-items: center;
        color: #ddd;
        font-size: 0.9em;
        -webkit-user-select: none;
        user-select: none;
      }

      .导航1级文本 > i {
        font-size: 11px;
        rotate: z 180deg;
        transition: 250ms;
        color: gray;
      }

      .导航1级文本:hover {
        /* background-color: rgb(43, 50, 57); */
        background: linear-gradient(transparent 0%, transparent 100%) border-box,
          linear-gradient(rgb(66, 77, 88) 0%, rgb(66, 77, 88) 100%) padding-box;
        cursor: url("/Images/Common/鼠标-指向.cur"), pointer;
      }

      .导航1级文本:has(+ .导航2级菜单列表:hover) {
        /* background-color: rgb(43, 50, 57); */
        background: linear-gradient(transparent 0%, transparent 100%) border-box,
          linear-gradient(rgb(66, 77, 88) 0%, rgb(66, 77, 88) 100%) padding-box;
      }
    }
  }
}

.导航2级菜单列表 {
  width: fit-content;
  flex-shrink: 0;
  border-radius: 8px;
  visibility: hidden;
  opacity: 0;
  transition: 150ms ease-out;
  pointer-events: none;

  .导航2级菜单 {
    width: fit-content;
    display: flex;
    flex-direction: column;
    translate: 0 110px;
    background-color: rgb(23, 28, 33);
    border-radius: 5px;
    overflow: hidden;
    transition: 150ms ease-out;
    box-shadow: 0 5px 30px 5px #0008, inset 0 0 0 1px var(--二级菜单色);

    .导航2级链接 {
      width: 150px;
      padding: 15px 22px;
      display: flex;
      justify-content: flex-start;
      align-items: center;
      font-size: 0.85em;
      -webkit-user-select: none;
      user-select: none;
    }
  }

  .导航2级链接:hover {
    background-color: var(--二级菜单色);
  }
}

.贡献区 {
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 25px;
}

.贡献分区 {
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  --贡献区文本颜色: lightblue;
  color: var(--贡献区文本颜色);
  flex-grow: 1;
  font-size: 18px;
  outline: none;
}

.贡献分区:hover {
  --贡献区文本颜色: lightcyan;
  cursor: url("/Images/Common/鼠标-指向.cur"), pointer;
  filter: drop-shadow(0 0 10px white) drop-shadow(0 0 10px white) drop-shadow(0 0 10px white);
  /*box-shadow: 0 0 10px 0 white;*/
}

.贡献分区:visited {
  color: var(--贡献区文本颜色);
}

.贡献分区:link {
  color: var(--贡献区文本颜色);
}

.贡献分区 > :where(.fa-brands, .fa-solid) {
  transition: scale 125ms;
}

.捐赠对话框 {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh !important;
  background-color: #123b;
  backdrop-filter: blur(20px);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 100px;
  opacity: 0;
  transition: 250ms;
}

.捐赠对话框关闭按钮 {
  position: absolute;
  top: 25px;
  right: 25px;
  width: 40px;
  height: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  border: solid 2px #555;
  background-color: transparent;
  color: white;
  border-radius: 5px;
  transition: 125ms;
}

.捐赠对话框关闭按钮:hover {
  border: solid 2px #777;
  background-color: #345;
}

.捐赠对话框关闭按钮:active {
  border: solid 2px #999;
  background-color: #567;
}

.乞讨图文区 {
  height: 30%;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 50px;
}

.乞讨图容器 {
  width: min(35%, 500px);
  height: 100%;
}

.乞讨图 {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.乞讨文本区 {
  width: min(35%, 500px);
  height: 100%;
  padding-top: 50px;
  color: white;
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.乞讨标题 {
  font-size: 2rem;
  color: gold;
}

.收款码区 {
  width: min(90%, 800px);
  height: min(40%, 500px);
  display: flex;
  justify-content: center;
  gap: 5%;
}

.收款码容器 {
  width: 50%;
  height: 100%;
  flex-shrink: 0;
}

.收款码 {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.平面图对话框 {
  position: fixed;
  width: 100%;
  height: 100vh;
  top: 50%;
  left: 50%;
  translate: -50% -50%;
  margin: 0 !important;
  background-color: transparent;
  /*background-image: linear-gradient(#4565 0%, #abc5 100%);
  backdrop-filter: blur(15px) brightness(50%);*/
  border: none;
  outline: none;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.平面图对话框::backdrop {
  backdrop-filter: blur(20px) brightness(50%);
}

.平面图链接 {
  display: flex;
  justify-content: center;
  align-items: center;
}

.学校平面图 {
  width: 100%;
  height: 95vh;
  object-fit: contain;
  transition: 125ms;
}

.关闭平面图 {
  width: 45px;
  height: 45px;
  border-radius: 5px;
  background-color: #6782;
  position: absolute;
  top: 20px;
  right: 30px;
  border: solid 2px #bcd4;
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
  font-size: 18px;
  box-shadow: 2px 2px 5px 0 #000a;
}

.关闭平面图:hover {
  background-color: #678;
  border: solid 2px #bcd;
  color: white;
}

.平面图版权超链接 {
  position: absolute;
  bottom: 12px;
  right: 12px;
  padding: 10px 20px;
  border-radius: 5px;
  background-color: #345;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  outline: solid 1px #fff5;
}

.平面图作者 {
  color: lightskyblue;
}

/* <!-- ------------------ ↓ 响应式设计 ------------------- --> */
@media only screen and (width < 1200px) {
  .菜单区 .导航1级菜单列表 {
    padding: 0 15px;
  }

  .菜单区 .导航1级菜单列表 .导航1级菜单 {
    width: 100px;
  }

  .菜单区 .导航1级菜单列表 .导航1级菜单 .导航1级文本 {
    font-size: 0.85em;
  }
}

@media only screen and (max-width: 1000px) {
  .top-banner {
    position: relative;
  }

  .logo {
    /* background-color: #e60073; */
    height: 50%;
    aspect-ratio: 1;
    object-fit: cover;
  }

  #logo-text-永,
  #logo-text-恒 {
    width: 25px;
    height: 45%;
  }
}

@media only screen and (max-width: 750px) {
  .导航功能区 {
    width: 450px;
    gap: 0;
  }
}

@media only screen and (max-width: 550px) {
  .top-banner {
    padding: 0 2%;
  }

  .菜单区 .导航1级菜单列表 {
    padding: 0 0 0 10px;
  }

  .菜单区 .导航1级菜单列表 .导航1级菜单 {
    width: 90px;
  }

  .导航功能区 {
    width: 350px;
    gap: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
  }
}

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