/* 2025-12-19 */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Microsoft Yahei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.4;
  font-weight: normal;
}

ul,
li {
  list-style: none;
}

img {
  width: 100%;
  vertical-align: middle;
}

a {
  text-decoration: none;
  color: #000;
}

input,
button {
  outline: none;
}

html {
  font-size: 62.5%; /* 1rem = 10px */
}

body {
  line-height: 1.6;
  color: #000;
  background: #fff;
  font-size: 1.6rem;
}

.container {
  width: 100%;
  max-width: 1500px;
  margin: 0 auto;
}

.relative {
  position: relative;
}

.flex-align-center,
.flex-center-between {
  display: flex;
  align-items: center;
}

.flex-height-100p {
  justify-content: space-between;
  align-items: stretch;
}

.flex-center-between {
  justify-content: space-between;
}

.ellipsis {
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}

.ellipsis-2 {
  -webkit-line-clamp: 2;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  text-overflow: ellipsis;
  overflow: hidden;
}

.center {
  text-align: center;
}

a img {
  transition: all 0.3s;
}

a:hover img {
  transform: scale(1.1);
}

.img-100-percent {
  position: absolute;
  left: 0;
  top: 0;
  width: 100% !important;
  height: 100% !important;
}

/* 字号 */
.size-36 {
  font-size: 3.6rem;
  font-weight: 600;
}

.size-24 {
  font-size: 2.4rem;
}

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

/* 间隔 */
.margin-t-160 {
  margin-top: 16rem;
}

.margin-t-60 {
  margin-top: 6rem;
}

.margin-t-50 {
  margin-top: 5rem;
}

.margin-t-30 {
  margin-top: 3rem;
}

.margin-b-30 {
  margin-bottom: 3rem;
}

.margin-b-20 {
  margin-bottom: 2rem;
}

.margin-b-100 {
  margin-bottom: 10rem;
}

.padding-t-b-120 {
  padding: 12rem 0;
}

.padding-t-120 {
  padding-top: 12rem;
}

/* color */
.color-gray {
  color: #999 !important;
}

.color-black {
  color: #000 !important;
}

.color-red {
  color: #e50012 !important;
}

.color-white {
  color: white !important;
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: transparent;
  z-index: 9999;
}

.nav-container {
  justify-content: space-between;
  height: 14rem;
}

.logo {
  height: 100%;
}

.logo a {
  display: block;
  width: 22rem;
  height: 100%;
  background: url('../images/logo/logo_white.svg') left center no-repeat;
}

.nav-links {
  display: flex;
}

.nav-links li {
  position: relative;
  margin: 0 2.2rem;
}

.nav-links a {
  display: block;
  height: 14rem;
  line-height: 14rem;
  font-size: 1.8rem;
  color: white;
}

.nav-links a:hover {
  color: #e50012;
}

.nav-links a.cur:before,
.subnav a.cur:after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, 2rem);
  width: 2.6rem;
  height: 0.4rem;
  background: #e50012;
  border-radius: 0.3rem;
}

.nav-links a.cur:hover {
  color: white;
}

.nav-links dl {
  display: none;
}

.nav-links li:hover dl,
.cur dl {
  display: block;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1.4rem;
  background: #cb0010;
}

.nav-links li:hover dl:before,
.cur dl:before {
  content: '';
  position: absolute;
  top: -0.8rem;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 0.8rem 1rem 0.8rem;
  border-color: transparent transparent #cb0010 transparent;
}

.nav-links dl a {
  white-space: nowrap;
  height: auto;
  line-height: 3.6;
  font-size: 1.6rem;
  padding: 0 1.5rem;
}

.nav-links dl a:hover {
  color: #fff;
  background: #a70404;
}

.navbar-white,
.navbar-white .nav-links li:hover dl,
.navbar-white .cur dl {
  background: white;
}

.navbar-white {
  border-bottom: 1px solid #e5e5e5;
}

.navbar-white .logo a {
  background-image: url('../images/logo/logo_black.svg');
}

.navbar-white a,
.navbar-white .nav-links a.cur:hover {
  color: #000;
}

.navbar-white .nav-links li:hover dl:before,
.navbar-white .cur dl:before {
  content: none;
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.menu-toggle span {
  height: 3px;
  width: 2.5rem;
  background: #e50012;
  margin: 3px 0;
}

/* 标题 */
.title-wrap h1 {
  font-size: 3.4rem;
  color: #e50012;
  margin-bottom: 0.8rem;
}

.title-wrap p {
  font-family: 'PingFang SC', 'Arial', 'sans-serif';
  font-size: 1.4rem;
  font-weight: 600;
  color: #e50012;
  line-height: 1.6rem;
}

.desc-en {
  font-family: 'PingFang SC', 'Arial', 'sans-serif';
  font-size: 1.4rem;
  color: #d8d8d8;
}

.more,
.more-red {
  display: block;
  width: 14rem;
  height: 4rem;
  line-height: 4rem;
  text-align: center;
  border: 1px solid #000;
}

.more-red {
  color: #fff;
  background: #e50012;
  border: none;
}

/* footer */
footer {
  margin-top: 17rem;
  font-size: 1.4rem;
  color: #fff;
}

footer a {
  color: #fff;
  white-space: nowrap;
}

.footer-wrap-1 {
  padding: 7rem 0 6rem;
  background: #a70404;
}

.partner-links {
  padding-bottom: 3rem;
  border-bottom: 2px solid #990303;
  line-height: 2;
}

.partner-links a {
  margin: 0 1.5rem;
}

.footer-info {
  padding-top: 3rem;
  border-top: 2px solid #af1d1d;
  line-height: 2;
}

.footer-logo {
  width: 18rem;
}

.footer-wrap-2 {
  line-height: 1.8;
  padding: 1.3rem 0;
  background: #990303;
}

/* list */
.column-2 {
  width: 45.8%;
}

.column-2 > div + div {
  margin-top: 6rem;
}

.column-2-small {
  width: 36.43%;
}

.cont-text {
  font-size: 1.4rem;
  line-height: 3rem;
}

/************************* 响应式 *************************/
@media (min-width: 2880px) and (max-width: 3840px) {
  html {
    font-size: 75%;
  }

  .container {
    max-width: 2306px;
  }
}

@media (max-width: 1600px) {
  .container {
    max-width: 1200px;
  }

  .nav-container {
    height: 8.4rem;
  }

  .logo a {
    width: 18rem;
  }

  .nav-links li {
    margin: 0 1.5rem;
  }

  .nav-links a {
    height: 8.4rem;
    line-height: 8.4rem;
  }
}

@media (max-width: 1200px) {
  .container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .margin-t-160 {
    margin-top: 12rem;
  }

  .margin-t-60 {
    margin-top: 4.5rem;
  }

  .margin-t-50 {
    margin-top: 3.75rem;
  }

  .margin-t-30 {
    margin-top: 2.25rem;
  }

  .margin-b-30 {
    margin-bottom: 2.25rem;
  }

  .margin-b-20 {
    margin-bottom: 1.5rem;
  }

  .margin-b-100 {
    margin-bottom: 7.5rem;
  }

  .padding-t-b-120 {
    padding: 9rem 0;
  }

  .padding-t-120 {
    padding-top: 9rem;
  }

  .swiper-banner,
  .banner-wrap {
    margin-top: 8.4rem;
  }

  .navbar {
    background: #fff;
  }

  .logo a {
    background-image: url('../images/logo/logo_black.svg');
  }

  .nav-links {
    position: fixed;
    top: 8.4rem;
    left: -100%;
    width: 100%;
    height: auto;
    background: #fff;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 2rem 0;
    transition: left 0.5s;
    box-shadow: 0 1rem 1rem rgba(0, 0, 0, 0.1);
    border-top: 1px solid #eee;
  }

  .nav-links.active {
    left: 0;
  }

  .nav-links a {
    color: #222;
    display: inline;
    font-size: 1.6rem;
    line-height: 1.6;
  }

  .nav-links a.cur:before {
    content: none;
  }

  .nav-links a.cur,
  .nav-links a.cur:hover {
    color: #e50012;
  }

  .nav-links li {
    margin: 1.5rem 0;
    width: 100%;
    padding: 0 1.5rem;
  }

  .open-dl {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 1.5rem;
  }

  .open-dl:before,
  .open-dl:after {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 0;
    width: 100%;
    height: 0.3rem;
    background: #e50012;
    transition: all 0.3s;
  }

  .open-dl:after {
    transform: translateY(-50%) rotate(90deg);
  }

  .cur .open-dl:after {
    width: 0;
  }

  .nav-links li:hover dl {
    display: none;
  }

  .nav-links li.cur dl {
    display: block;
    position: relative;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
    background: #fff;
  }

  .nav-links li:hover dl:before,
  .cur dl:before {
    content: none;
  }

  .menu-toggle {
    display: flex;
  }

  .title-wrap h1 {
    font-size: 2.8rem;
  }
}

/* 移动设备 屏幕宽度小于768px */
@media (max-width: 768px) {
  html {
    font-size: 56.25%; /* 9px - 保持1rem=9px，微调整体比例 */
  }

  .margin-t-160 {
    margin-top: 8rem;
  }

  .margin-t-60 {
    margin-top: 3rem;
  }

  .margin-t-50 {
    margin-top: 2.5rem;
  }

  .margin-t-30 {
    margin-top: 1.5rem;
  }

  .margin-b-30 {
    margin-bottom: 1.5rem;
  }

  .margin-b-20 {
    margin-bottom: 1rem;
  }

  .margin-b-100 {
    margin-bottom: 5rem;
  }

  .padding-t-b-120 {
    padding: 6rem 0;
  }

  .padding-t-120 {
    padding-top: 6rem;
  }

  .banner-wrap {
    position: relative;
    height: 20rem;
    overflow: hidden;
  }

  .banner-wrap img {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: auto;
    height: 100%;
  }

  footer {
    margin-top: 8.5rem;
    text-align: center;
  }

  .footer-wrap-1 {
    padding: 3.5rem 0;
  }

  .footer-info {
    flex-direction: column;
  }

  .footer-logo {
    display: none;
  }

  .footer-wrap-2 .container {
    flex-direction: column;
  }
}

/* 移动设备 屏幕宽度小于480px */
@media (max-width: 480px) {
}