body,
html {
  font-family: "montserrat", "roboto", "pht";
  font-size: 10px;
  line-height: 1.4286;
}

.bg-f2f2f2{
  background: #f2f2f2;
}

.container {
  margin-right: auto;
  margin-left: auto;
  padding-left: 15px;
  padding-right: 15px;
  width: 90%;
}

.container-all {
  margin-right: auto;
  margin-left: auto;
  width: 90%;
}

.title-top {
  display: inline-block;
  vertical-align: middle;
  font-size: 1.6rem;
  line-height: 40px;
  margin-right: 5px;
  color: #505050;
}
.title-environmental {
  line-height: 1.6;
  font-size: 1.8rem;
}

.container-roll {
  display: flex;
  align-items: flex-start;
  margin: 0 auto;
  padding: 20px 0;
}
.sidebar {
  position: sticky;
  top: 20px;
  align-self: flex-start;
}

.line-f2f2f2 {
  border: 1px solid #f2f2f2;
}

.content {
  flex: 1;
}

.content-section {
  background: #fafafa;
  border: 1px solid #ddd;
  border-radius: 8px;
  margin-bottom: 40px;
  padding: 20px;
}

.content-section h2 {
  margin-bottom: 10px;
}

/* 侧边栏 */

.title-left {
  vertical-align: middle;
  font-size: 1.6rem;
  color: #505050;
}

.line-l {
  border-left: 4px solid #333030;
  padding-left: 10px;
}

.nav-left {
  margin: 0 20px;
  padding: 10px;
  border-bottom: 1px solid #f2f2f2;
}

.nav-left > a:hover {
  color: #d6c9c9;
}

.hover-d6c9c6:hover {
  color: #d6c9c9;
}

.btn-page {
  display: inline-block;
  vertical-align: top;
  font-size: 1.4rem;
  text-align: center;
  padding: 0 6px;
  line-height: 38px;
  height: 40px;
  min-width: 40px;
  border: 1px solid #f2f2f2;
  margin: 0 5px 5px 5px;
  color: #505050;
  background-color: #fff;
  transition: all 0.5s ease;
}

.btn-page-choose {
  display: inline-block;
  vertical-align: top;
  font-size: 1.4rem;
  text-align: center;
  padding: 0 6px;
  line-height: 38px;
  height: 40px;
  min-width: 40px;
  border: 1px solid #f2f2f2;
  margin: 0 5px 5px 5px;
  color: #fff;
  background-color: #333030;
}

.btn-page:hover {
  background: #333030;
  color: #fff;
}

.bg-333030 {
  background: #333030;
}

.t-18 {
  font-size: 1.8rem;
}

.t-line-1 {
  margin-bottom: 0;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  overflow: hidden;
  display: -webkit-box;
  font-size: 1.6rem;
  margin-top: 0;
  height: 25px;
  margin-top: 5px;
}

.t-line-2 {
  margin-bottom: 0;
  color: #6c6c6c;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  display: -webkit-box;
  font-size: 1.6rem;
  margin-top: 0;
  height: 45px;
  margin-top: 5px;
}

.t-body-title {
  font-size: 24px;
  line-height: 1.6;
  color: #505050;
}

.body p {
  padding: 10px 0;
  line-height: 1.6;
  font-size: 1.6rem;
  color: #505050;
}
.body-ml-30 {
  margin-left: 30px;
}
@media (max-width: 768px) {
  .title {
    line-height: 1.6;
    font-size: 1.8rem;
  }

  .title-top {
    font-size: 1.4rem;
    line-height: 30px;
  }

  .title-environmental {
    font-size: 1.6rem;
  }

  .mt-5 {
    margin-top: 5px;
  }

  .lf-bk {
    display: inline-block;
    max-width: 30px;
    min-width: 3px;
    width: 40%;
    height: 2px;
    background-color: #888;
    border-radius: 10px;
  }

  .ct-dot {
    display: inline-block;
    background-color: #888;
    width: 6px;
    height: 6px;
    min-width: 6px;
    position: relative;
    margin: 0 4px 0 4px;
    border-radius: 50%;
    transform: translateY(-2px);
  }

  .rt-bk {
    display: inline-block;
    max-width: 30px;
    min-width: 3px;
    width: 40%;
    height: 2px;
    background-color: #888;
    border-radius: 10px;
  }

  .news-bk {
    display: inline-block;
    max-width: 11px;
    min-width: 3px;
    width: 40%;
    height: 2px;
    background-color: #888;
    border-radius: 10px;
  }
  .news-bk {
    display: inline-block;
    max-width: 11px;
    min-width: 3px;
    width: 40%;
    height: 2px;
    background-color: #888;
    border-radius: 10px;
  }

  .controls {
    display: none;
  }

  .dots {
    margin-bottom: -20px;
  }

  .xs-1-2 {
    width: 50%;
  }

  .hover-gallery-responsive {
    flex-wrap: wrap;
  }

  .hover-gallery-responsive .image-box {
    width: 47%;
    flex: none !important;
    transform: none !important;
    box-shadow: none !important;
  }

  .hover-gallery-responsive .image-box:hover {
    transform: none;
    box-shadow: none;
  }
}
@media (min-width: 480px) {
  .container-all {
    width: 93%;
  }
}

@media (min-width: 768px) {
  .container-all {
    width: 720px;
  }

  .hover-gallery {
    height: 500px;
  }

  .container-all > video {
    max-height: 324px;
  }
}
@media (max-width: 992px) {
  .describe {
    padding-bottom: 60px;
  }

  .environmental {
    display: block;
    text-align: center;
  }
  .environmental-img {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }

  .body-1-2 {
    width: 50%;
  }

  .sidebar {
    display: none;
  }

  .body-ml-30 {
    margin-left: 0;
  }
}
@media (min-width: 992px) {
  .container-all {
    width: 940px;
  }

  .container-all > video {
    max-height: 423px;
  }

  .body-1-3 {
    width: 33.3px;
  }
}

@media (min-width: 1200px) {
  .container-all {
    width: 1140px;
  }
  .container-all > video {
    max-height: 513px;
  }

  .grid-environment {
    width: 33.3%;
  }
}
@media (max-width: 1200px) {
  .grid-environment {
    width: 50%;
  }
}
@media (min-width: 1440px) {
  .container-all {
    width: 1460px;
  }

  .container-all > video {
    max-height: 612px;
  }
}
@media (min-width: 1680px) {
  .container-all {
    width: 1580px;
  }
}
.lf-bk {
  display: inline-block;
  max-width: 60px;
  min-width: 3px;
  width: 40%;
  height: 2px;
  background-color: #888;
  border-radius: 10px;
}

.ct-dot {
  display: inline-block;
  background-color: #888;
  width: 6px;
  height: 6px;
  min-width: 6px;
  position: relative;
  margin: 0 4px 0 4px;
  border-radius: 50%;
  transform: translateY(-2px);
}

.rt-bk {
  display: inline-block;
  max-width: 60px;
  min-width: 3px;
  width: 40%;
  height: 2px;
  background-color: #888;
  border-radius: 10px;
}

.news-bk {
  display: inline-block;
  max-width: 25px;
  min-width: 3px;
  width: 40%;
  height: 2px;
  background-color: #888;
  border-radius: 10px;
}

.news-bk {
  display: inline-block;
  max-width: 25px;
  min-width: 3px;
  width: 40%;
  height: 2px;
  background-color: #888;
  border-radius: 10px;
}

.c-bk {
  display: block;
  height: 3px;
  width: 50px;
  background: #333030;
  margin: 0 auto;
  z-index: 10;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  -o-transition: all 0.3s;
  transition: all 0.3s;
}

.title {
  margin: 0;
  padding: 0;
  font-size: 3.2rem;
  line-height: 1.8;
  color: #333030;
  text-transform: capitalize;
  font-weight: normal;
  margin-bottom: 30px;
}


.main.container-fluid,
.main.container {
  padding-left: 15px !important;
  padding-right: 15px !important;
}
@media (max-width: 768px) {
  .title {
    line-height: 1.6;
    font-size: 1.8rem;
  }
  .mt-5 {
    margin-top: 5px;
  }
  .lf-bk {
    display: inline-block;
    max-width: 30px;
    min-width: 3px;
    width: 40%;
    height: 2px;
    background-color: #888;
    border-radius: 10px;
  }

  .ct-dot {
    display: inline-block;
    background-color: #888;
    width: 6px;
    height: 6px;
    min-width: 6px;
    position: relative;
    margin: 0 4px 0 4px;
    border-radius: 50%;
    transform: translateY(-2px);
  }

  .rt-bk {
    display: inline-block;
    max-width: 30px;
    min-width: 3px;
    width: 40%;
    height: 2px;
    background-color: #888;
    border-radius: 10px;
  }

  .news-bk {
    display: inline-block;
    max-width: 11px;
    min-width: 3px;
    width: 40%;
    height: 2px;
    background-color: #888;
    border-radius: 10px;
  }
  .news-bk {
    display: inline-block;
    max-width: 11px;
    min-width: 3px;
    width: 40%;
    height: 2px;
    background-color: #888;
    border-radius: 10px;
  }

  .controls {
    display: none;
  }

  .dots {
    margin-bottom: -20px;
  }

  .xs-1-2 {
    width: 50%;
  }

  .hover-gallery-responsive {
    flex-wrap: wrap;
  }

  .hover-gallery-responsive .image-box {
    width: 47%;
    flex: none !important;
    transform: none !important;
    box-shadow: none !important;
  }

  .hover-gallery-responsive .image-box:hover {
    transform: none;
    box-shadow: none;
  }
}
@media (min-width: 480px) {
  .container {
    width: 93%;
  }
}

@media (min-width: 768px) {
  .container {
    width: 720px;
  }

  .hover-gallery {
    height: 500px;
    overflow: hidden;
  }

  .container > video {
    max-height: 324px;
  }
}
@media (max-width: 992px) {
  .describe {
    padding-bottom: 60px;
  }

  .environmental {
    display: block;
    text-align: center;
  }
  .environmental-img {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }
}
@media (min-width: 992px) {
  .container {
    width: 940px;
  }

  .container > video {
    max-height: 423px;
  }
}

@media (min-width: 1200px) {
  .container {
    width: 1140px;
  }
  .container > video {
    max-height: 513px;
  }
}

@media (min-width: 1440px) {
  .container {
    width: 1460px;
  }

  .container > video {
    max-height: 612px;
  }
}

.navigation {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  background: linear-gradient(90deg, #595959, #2d2b27);
  transition: background 0.3s ease;
}

.navigation.scrolled {
  background: rgba(0, 0, 0, 0.7); /* 你要的纯黑半透明 */
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.navigation a {
  color: #fff;
  text-decoration: none;
  cursor: pointer;
}

.header {
  display: flex;
  width: 95%;
  margin: 0 auto;
  align-items: center;
  position: relative;
}

.logo-link {
  width: 15%;
  vertical-align: middle;
  display: inline-block;
  transition: all 0.3s;
}

.logo {
  display: inline-block;
  max-width: 100%;
  max-height: 100%;
  overflow: hidden;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  transition: all 0.3s;
}

.loaded {
  opacity: 1;
}

.collapse {
  display: none;
}

.navbar-ul {
  height: auto;
  display: table;
  margin: 0 auto;
}

.navigation > ul {
  overflow: auto;
  list-style: none;
}

.navigation .navbar-ul > li {
  font-size: 1.6rem;
  display: table-cell;
  vertical-align: middle;
  text-align: center;
  position: relative;
  float: left;
  margin: 0 5px;
  cursor: pointer;
  text-transform: uppercase;
  perspective: 500px;
}

.navigation .navbar-ul > li > a {
  color: #d6cece;
  display: block;
  padding: 33px 5px;
}

.navigation .subnavs {
  display: none;
  position: absolute;
}

.navigation .lv-2 {
  position: absolute;
  z-index: 1001;
  overflow: inherit;
  padding-top: 33px;
  top: 58px;
  left: 0;
  width: max-content;
  border-top: 2px solid #333030;
}

.navigation ul {
  overflow: auto;
  list-style: none;
}

.navigation .navbar-ul > li > a:hover {
  color: #979db0;
}

.icon-drop {
  width: 16px;
  transition: filter 0.3s ease;
  filter: brightness(0) saturate(100%) invert(94%) sepia(6%) saturate(145%)
    hue-rotate(186deg) brightness(89%) contrast(84%);
}

.icon-drop:hover {
  filter: brightness(0) saturate(100%) invert(74%) sepia(5%) saturate(855%)
    hue-rotate(182deg) brightness(95%) contrast(90%);
}

.navigation .subnavs li {
  z-index: 1002;
  background: linear-gradient(90deg, #595959, #2d2b27);
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  -o-transition: all 0.3s;
  transition: all 0.3s;
}

.navigation .lv-2 > li {
  position: relative;
  display: block;
  line-height: 40px;
  height: 40px;
  font-size: 1.6rem;
}

.navigation .subnavs li a {
  position: relative;
  opacity: 0.9;
  text-transform: initial;
  display: block;
}

.navigation a {
  color: #fff;
  text-decoration: none;
  cursor: pointer;
}

.had-subnav:hover .subnavs {
  display: block;
}
.nav-item {
  position: relative;
}

/* 下拉菜单默认隐藏 */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: linear-gradient(90deg, #595959, #2d2b27);
  list-style: none;
  padding: 0.5rem 0;
  display: none;
  min-width: 120px;
  z-index: 998;
}

.dropdown li a {
  display: block;
  padding: 0.5rem 0;
  color: #d6cece;
  text-decoration: none;
  white-space: nowrap;
}

.dropdown li a:hover {
  color: #979db0;
}

/* 悬浮显示下拉 */
.nav-item:hover .dropdown {
  display: block;
}

.navigation .language {
  position: absolute;
  right: 60px;
  top: 33px;
  color: #fff;
  cursor: pointer;
  margin-right: 10px;
  height: 56px;
  font-size: 1.4rem;
}

.iconflag {
  width: 29px;
  height: 20px;
  background-repeat: no-repeat;
  background-position: 0 0;
  line-height: 20px;
  float: left;
  margin: 2px 2px 0 0;
}

.icon-search {
  position: absolute;
  right: 25px;
  top: 30px;
  line-height: 18px;
  cursor: pointer;
  color: #fff;
  width: 25px;
  display: none;
}

.icon-hamburger {
  margin: 10px 0 25px 0;

  margin-left: 100px;
  display: none;
}

.icon-hamburger img {
  width: 25px;
  height: 25px;
  transition: transform 0.3s ease;
}

.lang-drop {
  position: relative;
  cursor: pointer;
}

.lang-drop .list {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  width:30rem;
  background: rgba(53, 52, 48, 0.9);
  z-index: 10;
  grid-template-columns: 50% 50%;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.lang-drop:hover .list {
  display: grid;
}

.lang-drop .list li {
  color: #fff;
  padding: 0.8rem;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lang-drop .list li:hover {
  background: #333030;
  transition: all 0.5s;
}

.search-fixed {
  width: 50px;
  height: 100px;
  position: fixed;
  top: 50%;
  right: 0;
  display: none;
}

.icon-search2 {
  padding: 12px;
  background: #333030;
}

.icon-search2 img {
  width: 25px;
  align-items: center;
}

.icon-search2:hover {
  background: #000;
}

.go-top-btn {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s;
}

.go-top-btn.show {
  opacity: 1;
  visibility: visible;
}

.search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(128, 128, 128, 0.8);
  z-index: 1000;
  opacity: 0;
  transform: scale(1.02);
  pointer-events: none;
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.search-overlay.active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.search-box {
  display: flex;
  align-items: center;
  position: absolute;
  top: 35%;
  width: 80%;
  margin: 0 0 0 5%;
  padding: 0.75rem 1rem;
  border-radius: 8px;
}

.search-btn {
  width: 50px;
  height: 40px;
  border: none;
  background: #333030;
  cursor: pointer;
  padding: 0;
  margin-right: 0.75rem;
  display: flex;
  align-items: center;
}

.search-btn img {
  width: 25px;
  height: 25px;
}

.search-box input {
  width: 100%;
  padding: 1.3rem;
  font-size: 1.2rem;
  border: 1px solid #ccc;
}

.close-btn {
  position: absolute;
  top: 1rem;
  right: 1em;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: #e3e3e3;
  width: 2.5rem;
  height: 2.5rem;
  z-index: 1001; /* 确保盖在 search-box 上面 */
}

@media (min-width: 768px) {
  .navigation .navbar-ul > li > a {
    color: #d6cece;
  }

  .navigation .navbar-ul .lv-2 > li {
    color: #d6cece;
  }

  .navigation .navbar-ul .lv-2 li a,
  .navigation .navbar-ul .lv-3 li a {
    color: #d6cece;
  }

  .search-fixed {
    display: block;
  }
}



@media (min-width: 1200px) {
  .navigation .collapse {
    width: 75%;
    padding: 0 10px;
    display: block;
    color: #d6cece;
  }

  .subnavs {
    border-top: 0;
  }

  .navigation li > .subnavs {
    transition: all 0.3s ease-in-out;
    transform: scale(0.8) rotateY(30deg);
    transform-origin: center 0;
    opacity: 0;
    display: block;
    visibility: hidden;
  }

  .icon-search {
    display: block;
  }
}

@media (max-width: 1200px) {
  .navigation .collapse {
    background: rgba(0, 0, 0, 0.5);
    position: fixed;
    top: 60px;
    bottom: 0;
    right: 0;
    left: 0;
    height: auto !important;
    overflow: auto;
    z-index: 20;
  }

  .subnavs {
    transition: all 0.3s ease-in-out;
    transform: scale(0.8) rotateY(30deg);
    transform-origin: center 0;
    opacity: 0;
    display: block;
    visibility: hidden;
  }

  .icon-hamburger {
    display: flex;
    justify-content: flex-end;
  }
}

.menu-overlay {
  position: fixed;
  margin-top: 60px;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.5);
  display: none;
  z-index: 999;
  transition: opacity 0.5s ease;
}

.menu-overlay.active {
  display: flex;
}

.list-hamburger {
  font-size: 12px;
  line-height: 20px;
  color: #fff;
  background: rgba(24, 24, 24, 0.9);
}

.list-hamburger > li > p {
  padding-top: 3px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.menu-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 2rem;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.menu-buttons button {
  padding: 1rem 2rem;
  font-size: 1.2rem;
  background-color: #444;
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s;
}

.menu-buttons button:hover {
  background-color: #666;
}

.ul-hamburger {
  display: block;
  background: rgba(24, 24, 24, 0.9);
  padding-bottom: 35px;
}

.ul-hamburger > li > a {
  color: #d6cece;
  display: block;
  padding: 12px;
  font-size: 14px;
}

.ul-hamburger > li > a:hover {
  color: #979db0;
}

/* 底部 */
.form-contact-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 32px;
  background: #fff;
  border-radius: 8px;
}

.form-contact-title {
  text-align: center;
  font-size: 22px;
  margin-bottom: 30px;
  color: #111;
  font-weight: bold;
}

.form-container {
  max-width: 800px;
  margin: auto;
  font-size: 14px;
  font-weight: bold;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.form-label {
  width: 30%;
  text-align: right;
  padding-right: 10px;
  box-sizing: border-box;
}

.form-label span {
  color: red;
}

.form-field {
  width: 60%;
  box-sizing: border-box;
}

.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 14px;
}

select[multiple] {
  height: auto; /* 浏览器有时候会默认 2~4 行 */
}

.from-submit {
  width: 100%;
  padding: 6px;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}

@media (max-width: 600px) {
  .form-label {
    width: 100%;
    text-align: left;
    margin-bottom: 4px;
  }
  .form-field {
    width: 100%;
  }
}

.bottom-txt {
  font-size: 1.6rem;
}

.gap {
    gap: 10px
}

.omit{
    padding-left: 5px;
    overflow: hidden;
    white-space: nowrap;
}

.submit{
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
}

.mt-40{
  margin-top: 40px;
}

.mb-60{
  margin-bottom:60px
}