@font-face {
  font-family: 'uisdc-title';
  src: url('../font/uisdc-title-black.ttf') format('truetype');
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Microsoft YaHei", "PingFang SC", sans-serif; background: #fff; min-width: 1688px; }
img { display: block; }
a { text-decoration: none; color: inherit; }
.container { width: 1240px; margin: 0 auto; position: relative; }

/* ===== Header ===== */
.header {
  height: 123px;
  background: linear-gradient(to bottom, #780000 0%, #f10000 100%);
  position: relative;
  z-index: 10;
}
.hd-logo { position: absolute; left: 5px; top: 30px; }
.hd-logo img { height: 64px; width: auto; }
.hd-phone {
  position: absolute; right: 3px; top: 29px;
  color: #fff; font-size: 24px; line-height: 1; font-weight: bold;
}
.hd-nav { position: absolute; right: 4px; top: 78px; }
.hd-nav a {
  position: relative;
  color: #fff; font-size: 17px; line-height: 1; font-weight: bold;
  margin-left: 41px; padding-bottom: 8px;
}
.hd-nav a:first-child { margin-left: 0; }
.hd-nav a::after {
  content: ''; position: absolute; left: 50%; bottom: 0;
  width: 0; height: 2px; background: #fff;
  transform: translateX(-50%);
  transition: width .25s;
}
.hd-nav a:hover::after, .hd-nav a.on::after { width: 100%; }

/* ===== Footer ===== */
.footer {
  height: 262px;
  background: linear-gradient(to bottom, #f10000 0%, #780000 100%);
  color: #fff;
}
.f-logo { position: absolute; left: 6px; top: 43px; }
.f-logo img { height: 64px; width: auto; }
.f-contact { position: absolute; left: 308px; top: 51px; }
.f-contact h3 { font-size: 20px; letter-spacing: 5px; font-weight: bold; line-height: 1; }
.f-contact p { font-size: 17px; font-weight: bold; line-height: 1; margin-top: 25px; }
.f-contact p.tel { margin-top: 14px; }
.f-qr { position: absolute; right: 5px; top: 30px; }
.f-qr img { width: 140px; height: 140px; }
.f-copy {
  font-weight: bold;
  position: absolute; left: 5px; top: 222px;
  font-size: 12px; color: rgb(197,146,146); line-height: 1;
}

/* ===== Video Modal ===== */
.video-modal {
  display: none; position: fixed; inset: 0; z-index: 999;
  background: rgba(0,0,0,.88);
}
.video-modal.show { display: block; }
.video-modal .inner {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 960px;
}
.video-modal .close {
  position: absolute; right: -40px; top: -36px;
  width: 32px; height: 32px; cursor: pointer;
  z-index: 10;
}
.video-modal .close::before,
.video-modal .close::after {
  content: ''; position: absolute; top: 50%; left: 50%;
  width: 24px; height: 2px; background: #ccc;
}
.video-modal .close::before { transform: translate(-50%,-50%) rotate(45deg); }
.video-modal .close::after  { transform: translate(-50%,-50%) rotate(-45deg); }
.video-modal .close:hover::before,
.video-modal .close:hover::after { background: #fff; }
.video-modal .player-wrap {
  position: relative; padding-bottom: 56.25%; background: #000; border-radius: 4px; overflow: hidden;
}
.video-modal .player-wrap #player-box { position: absolute; inset: 0; }
.video-modal .v-title {
  color: #fff; font-size: 18px; text-align: center; margin-top: 16px; line-height: 1;
}

/* ===== Section common ===== */
.sec-title {
  text-align: center;
  font-size: 24px;
  font-weight: bold;
  color: #222;
  line-height: 1;
}
.sec-uline { height: 2px; background: #e21818; margin: 14px auto 0; }
.ul-5 { width: 132px; }
.ul-4 { width: 105px; }
.more-btn {
  display: block;
  width: 143px; height: 43px;
  margin: 52px auto 0;
  border: 1px solid #444;
  text-align: center;
  line-height: 41px;
  font-size: 15px;
  color: #6a6a6a;
  background: transparent;
  transition: background .3s, color .3s, border-color .3s;
}
.more-btn:hover {
  background: #e21818;
  border-color: #e21818;
  color: #fff;
}

/* ===== Grid / Card common ===== */
.grid3 {
  width: 1232px;
  display: grid;
  grid-template-columns: 388px 389px 389px;
  column-gap: 33px;
  row-gap: 34px;
}
.card { position: relative; overflow: hidden; }
.card > img { width: 100%; height: 265px; object-fit: cover; }
.card .cap {
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 45px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; color: #fff; line-height: 1;
  background: linear-gradient(to top, rgba(0,0,0,.55), rgba(0,0,0,0));
  z-index: 2; pointer-events: none;
}
.card .zoom {
  position: absolute; inset: 0; z-index: 3;
  background: rgba(0,0,0,.35);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity .3s;
}
.card:hover .zoom { opacity: 1; }
.card .zoom img { width: 63px; height: 63px; }
.grid2 {
  width: 1232px;
  margin: 35px auto 0;
  display: grid;
  grid-template-columns: 598px 599px;
  column-gap: 35px;
}
.grid2 .card > img { height: 352px; }
.card .hov {
  position: absolute; inset: 0; z-index: 3;
  background: rgba(0,0,0,.45);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 18px;
  opacity: 0; transition: opacity .3s;
}
.card:hover .hov { opacity: 1; }

/* ===== Index: Banner ===== */
.banner {
  margin-top: 9px;
  height: 818px;
  position: relative;
  overflow: hidden;
}
.bannerSwiper {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
}
.bannerSwiper .swiper-slide { position: relative; }
.bannerSwiper img,
.bannerSwiper video {
  width: 100%; height: 100%; object-fit: cover;
}
.bn-inner {
  position: absolute; inset: 0;
  width: 1240px; margin: 0 auto;
  pointer-events: none;
}
.bn-text { position: absolute; left: 5px; top: 330px; }
.bn-text .b1 { font-family: 'uisdc-title', 'Microsoft YaHei', sans-serif; font-weight: lighter; font-size: 34px; color: #f6f6f6; letter-spacing: 1px; line-height: 1; }
.bn-text .b2 { font-family: 'uisdc-title', 'Microsoft YaHei', sans-serif; font-weight: lighter; font-size: 66px; color: #e21818; letter-spacing: 3px; line-height: 1; margin-top: 33px; }
.bn-text .b3 { font-family: 'uisdc-title', 'Microsoft YaHei', sans-serif; font-weight: lighter; font-size: 34px; color: #fff; line-height: 1; margin-top: 30px; }
.bn-wm { position: absolute; left: 809px; top: 338px; }
.bn-wm img { width: 297px; height: auto; }
.bn-dots {
  position: absolute; bottom: 24px; left: 50%; z-index: 10;
  transform: translateX(-50%);
  display: flex; gap: 11px;
}
.bn-dot {
  width: 9px; height: 9px;
  background: rgba(255,255,255,.5);
  border-radius: 50%;
  cursor: pointer;
  transition: background .3s;
}
.bn-dot.active { background: #e21818; }

/* ===== Index: About ===== */
.about {
  margin-top: 8px;
  /* height: 819px; */
  padding-bottom: 200px;
  background: url(../images/about_bg.jpg) no-repeat center top / 100% 100%;
}
.ab-title { padding-top: 227px; text-align: center; }
.ab-title h2 { font-size: 25px; font-weight: bold; color: #fff; line-height: 1; }
.ab-uline { width: 104px; height: 3px; background: #e21818; margin: 12px auto 0; }
.ab-text { width: 1232px; margin: 45px auto 0; }
.ab-text p { font-size: 15px; line-height: 31px; color: #fff; letter-spacing: 1px; }
.ab-text p + p { margin-top: 50px; }

/* ===== Index: Enterprise ===== */
.sec-ent {
  background: url(../images/ent_bg.png) no-repeat center top / 100% 100%;
  padding: 88px 0 89px;
}
.sec-ent .grid3 { margin: 53px auto 0; }

/* ===== Index: Product ===== */
.sec-prod { background: #f5f2f2; padding: 88px 0 90px; }
.sec-prod .grid3 { margin: 52px auto 0; }

/* ===== Index: Short video ===== */
.sec-short { background: #fff; padding: 88px 0 88px; }
.sec-short .grid3 { margin: 53px auto 0; }

/* ===== Index: Clients ===== */
.sec-clients { background: #f5f2f2; padding: 89px 0 88px; }
.clients-wrap { width: 1228px; margin: 53px auto 0; position: relative; }
.clientsSwiper { width: 100%; }
.page-grid {
  display: grid;
  grid-template-columns: repeat(6, 188px);
  grid-template-rows: repeat(3, auto);
  gap: 20px;
}
.page-grid img { width: 188px; }
.c-arrow {
  position: absolute; top: 133px; z-index: 5; cursor: pointer;
}
.c-arrow.l { left: -43px; }
.c-arrow.r { right: -52px; }
.dots { text-align: center; margin-top: 53px; font-size: 0; line-height: 0; }
.dots .swiper-pagination-bullet {
  width: 9px; height: 9px;
  background: #cecece; opacity: 1;
  margin: 0 5.5px; border-radius: 50%;
  display: inline-block; vertical-align: middle;
}
.dots .swiper-pagination-bullet-active { background: #e21818; }

/* ===== Case: Banner ===== */
.case-banner {
  height: 260px;
  background: url(../images/case_banner_bg.jpg) no-repeat center / cover;
  position: relative;
}
.case-banner .container { height: 100%; }
.cb-text { position: absolute; left: 5px; top: 50%; transform: translateY(-50%); }
.cb-text h1 { font-family: 'uisdc-title', 'Microsoft YaHei', sans-serif; font-weight: lighter; font-size: 38px; color: #fff; line-height: 1; letter-spacing: 2px; }
.cb-text h1 .red { color: #e21818; }
.cb-text p { font-family: 'uisdc-title', 'Microsoft YaHei', sans-serif; font-weight: lighter; font-size: 20px; color: rgba(255,255,255,.75); line-height: 1; margin-top: 12px; letter-spacing: 1px; }

/* ===== Case: List ===== */
.case-list { background: #fff; padding: 100px 0 120px; }
.case-title { text-align: center; }
.case-title h2 { font-family: 'Microsoft YaHei', sans-serif; font-size: 38px; color: #222; line-height: 1; }
.case-title p { font-family: 'Microsoft YaHei', sans-serif; font-size: 14px; color: #999; letter-spacing: 2px; margin-top: 10px; text-transform: lowercase; }
.case-list .grid3 { margin: 100px auto 0; }

/* ===== Case: Load more ===== */
.load-wrap { text-align: center; margin-top: 52px; }
.load-btn {
  display: inline-block;
  width: 143px; height: 43px;
  border: 1px solid #444;
  line-height: 41px;
  font-size: 15px;
  color: #6a6a6a;
  background: transparent;
  cursor: pointer;
  transition: background .3s, color .3s, border-color .3s;
}
.load-btn:hover { background: #e21818; border-color: #e21818; color: #fff; }
.load-end { display: none; height: 43px; line-height: 43px; font-size: 14px; color: #999; }

/* ===== Hero (Contact / Partner) ===== */
.hero {
  height: 380px;
  background: radial-gradient(ellipse at 50% 0%, #2b3a55 0%, #151e30 55%, #0d1422 100%);
  display: flex; align-items: center; justify-content: center;
  text-align: center;
}
.hero h1 { font-size: 36px; font-weight: bold; color: red; letter-spacing: 2px; }
.hero p { font-size: 16px; color: rgba(255,255,255,.55); margin-top: 18px; letter-spacing: 1px; }

/* ===== Contact: Cards ===== */
.contact-cards { background: #f7f8fa; }
.images-row {
  width: 1240px; margin: 0 auto;
}
.images-row img {
  width: 100%; display: block;
}

/* ===== Contact: CTA banner ===== */
.cta-banner {
  width: 1240px; margin: 0 auto;
  background: radial-gradient(ellipse at 50% 40%, #e01c1c 0%, #c10f0f 60%, #a80c0c 100%);
  border-radius: 12px;
  text-align: center;
  padding: 60px 40px 55px;
}
.cta-banner h2 { font-size: 26px; font-weight: bold; color: #fff; }
.cta-banner p {
  font-size: 14px; color: rgba(255,255,255,.75); line-height: 1.9;
  width: 620px; margin: 18px auto 0;
}
.cta-banner .btn {
  display: inline-block;
  margin-top: 30px;
  padding: 13px 36px;
  background: #fff; color: #e21818;
  font-size: 15px; font-weight: bold;
  border-radius: 4px;
  transition: transform .3s, box-shadow .3s;
}
.cta-banner .btn:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0,0,0,.2); }

/* ===== Partner: Logo grid ===== */
.partners { background: #fff; padding: 90px 0 95px; }
.logo-grid {
  width: 1228px; margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(6, 188px);
  gap: 20px;
}
.logo-grid a {
  display: block;
  border: 1px solid #e8e8e8;
  border-radius: 4px;
  overflow: hidden;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.logo-grid a:hover {
  transform: translateY(-3px);
  border-color: #d0d0d0;
  box-shadow: 0 6px 18px rgba(0,0,0,.12);
}
.logo-grid img { width: 188px; }

/* ===== Partner: CTA ===== */
.cta { background: #f7f8fa; padding: 90px 0 100px; text-align: center; }
.cta h2 { font-size: 30px; font-weight: bold; color: #333; }
.cta p {
  font-size: 15px; color: #999; line-height: 1.9;
  width: 560px; margin: 20px auto 0;
}
.cta .btn {
  display: inline-block;
  margin-top: 35px;
  padding: 13px 38px;
  background: #e21818; color: #fff;
  font-size: 15px; font-weight: bold;
  border-radius: 4px;
  transition: background .3s;
}
.cta .btn:hover { background: #c11414; }