/* =========================================================
   点接智能 · 站点样式
   PC + 移动端响应式
   ========================================================= */

:root{
  --c-blue:#0E5AE0;
  --c-blue-2:#2E7CF6;
  --c-blue-deep:#0A3E9E;
  --c-dark:#0A1626;
  --c-dark-2:#102138;
  --c-text:#15243B;
  --c-muted:#5E7189;
  --c-line:#E6EDF6;
  --c-soft:#F4F8FD;
  --c-accent:#F08A24;
  --radius:18px;
  --shadow-sm:0 2px 8px rgba(15,35,70,.05);
  --shadow-md:0 10px 30px rgba(15,35,70,.08);
  --shadow-lg:0 22px 60px rgba(10,30,70,.14);
  --wrap:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  scroll-padding-top:76px;
}

body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--c-text);
  background:#fff;
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
button{font:inherit;background:none;border:0;cursor:pointer;color:inherit;}

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
}

.pc-only{display:inline;}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:15px 30px;
  border-radius:999px;
  font-size:15.5px;
  font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
  will-change:transform;
}
.btn svg{width:18px;height:18px;flex:none;}
.btn-primary{
  background:linear-gradient(135deg,var(--c-blue-2),var(--c-blue) 55%,var(--c-blue-deep));
  color:#fff;
  box-shadow:0 12px 28px rgba(14,90,224,.30);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(14,90,224,.38);}
.btn-ghost{
  color:#fff;
  border:1.4px solid rgba(255,255,255,.42);
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(6px);
}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.7);transform:translateY(-2px);}
.btn-line{
  border:1.4px solid var(--c-line);
  color:var(--c-text);
  background:#fff;
}
.btn-line:hover{border-color:var(--c-blue);color:var(--c-blue);}
.btn-block{width:100%;}

/* =========================================================
   顶部导航
   ========================================================= */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:100;
  transition:background .35s var(--ease),box-shadow .35s var(--ease),backdrop-filter .35s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(14px);
  box-shadow:0 1px 0 rgba(15,35,70,.07),0 6px 24px rgba(15,35,70,.06);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:76px;
  transition:height .35s var(--ease);
}
.site-header.is-scrolled .nav-wrap{height:66px;}

.brand{display:flex;align-items:center;gap:11px;flex:none;}
.brand-mark{
  width:42px;height:42px;flex:none;
  display:grid;
  place-items:center;
  background:#fff;
  border-radius:11px;
  padding:5px;
  border:1px solid rgba(224,234,246,.9);
  box-shadow:0 4px 14px rgba(8,20,40,.18);
}
.brand-mark img{width:100%;height:100%;object-fit:contain;display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{
  font-size:18.5px;
  font-weight:700;
  letter-spacing:.1em;
  color:#fff;
  transition:color .35s var(--ease);
}
.brand-text em{
  font-style:normal;
  font-size:9px;
  letter-spacing:.18em;
  color:rgba(255,255,255,.62);
  margin-top:3px;
  transition:color .35s var(--ease);
}
.site-header.is-scrolled .brand-text strong{color:var(--c-text);}
.site-header.is-scrolled .brand-text em{color:var(--c-muted);}

.nav{display:flex;align-items:center;gap:4px;}
.nav a{
  position:relative;
  padding:9px 14px;
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,.86);
  border-radius:8px;
  transition:color .25s var(--ease),background .25s var(--ease);
}
.nav a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  background:var(--c-blue-2);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s var(--ease);
}
.nav a:hover{color:#fff;}
.nav a:hover::after{transform:scaleX(1);}
.site-header.is-scrolled .nav a{color:var(--c-text);}
.site-header.is-scrolled .nav a:hover{color:var(--c-blue);}

.nav-side{display:flex;align-items:center;gap:14px;flex:none;}
.nav-tel{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 20px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.03em;
  color:#fff;
  border:1.3px solid rgba(255,255,255,.35);
  transition:all .3s var(--ease);
}
.nav-tel svg{width:17px;height:17px;}
.nav-tel:hover{background:#fff;color:var(--c-blue);border-color:#fff;}
.site-header.is-scrolled .nav-tel{
  background:var(--c-blue);
  border-color:var(--c-blue);
  color:#fff;
  box-shadow:0 8px 20px rgba(14,90,224,.24);
}
.site-header.is-scrolled .nav-tel:hover{background:var(--c-blue-deep);border-color:var(--c-blue-deep);color:#fff;}

.burger{
  display:none;
  width:42px;height:42px;
  border-radius:10px;
  position:relative;
  flex:none;
}

.nav-mask{
  display:none;
  position:fixed;
  inset:0;
  z-index:94;
  background:rgba(6,14,28,.58);
  opacity:0;
  visibility:hidden;
  transition:opacity .35s var(--ease),visibility .35s var(--ease);
}
.nav-mask.is-on{opacity:1;visibility:visible;}

/* 菜单展开时淡化左侧品牌标识 */
body.nav-open .brand{opacity:.28;transition:opacity .3s var(--ease);}
.burger span{
  position:absolute;
  left:10px;
  width:22px;height:2px;
  background:#fff;
  border-radius:2px;
  transition:transform .3s var(--ease),opacity .25s var(--ease),background .3s var(--ease),top .3s var(--ease);
}
.burger span:nth-child(1){top:14px;}
.burger span:nth-child(2){top:20px;}
.burger span:nth-child(3){top:26px;}
.burger.is-open span{background:var(--c-text);}
.burger.is-open span:nth-child(1){top:20px;transform:rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){top:20px;transform:rotate(-45deg);}
.site-header.is-scrolled .burger span{background:var(--c-text);}

/* =========================================================
   首屏
   ========================================================= */
.hero{
  position:relative;
  min-height:100vh;
  min-height:100svh;
  display:flex;
  align-items:center;
  overflow:hidden;
  background:var(--c-dark);
}
.hero-slides{position:absolute;inset:0;z-index:0;}
.hero-slide{
  position:absolute;
  inset:0;
  opacity:0;
  transition:opacity 1.1s var(--ease);
  will-change:opacity;
}
.hero-slide.is-active{opacity:1;}
.hero-slide img{
  width:100%;height:100%;
  object-fit:cover;
  object-position:center 42%;
  transform:scale(1.05);
  transition:transform 9s linear;
}
.hero-slide.is-active img{transform:scale(1);}
@keyframes heroZoom{
  from{transform:scale(1.06);}
  to{transform:scale(1);}
}
.hero-veil{
  position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(100deg,rgba(6,16,32,.93) 0%,rgba(6,16,32,.80) 38%,rgba(6,16,32,.42) 68%,rgba(6,16,32,.55) 100%),
    linear-gradient(to top,rgba(6,16,32,.85) 0%,rgba(6,16,32,0) 42%);
}
.hero-inner{
  position:relative;
  z-index:2;
  padding-top:120px;
  padding-bottom:120px;
  max-width:1248px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13.5px;
  letter-spacing:.14em;
  color:rgba(255,255,255,.82);
  font-weight:500;
  margin-bottom:26px;
  padding:8px 18px 8px 14px;
  border:1px solid rgba(255,255,255,.18);
  border-radius:999px;
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(4px);
}
.eyebrow .dot{
  width:7px;height:7px;border-radius:50%;
  background:#3DDC97;
  box-shadow:0 0 0 4px rgba(61,220,151,.18);
  animation:pulse 2.4s infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(61,220,151,.18);}
  50%{box-shadow:0 0 0 7px rgba(61,220,151,.06);}
}

.hero h1{
  font-size:clamp(30px,4.4vw,58px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:.01em;
  color:#fff;
  margin-bottom:26px;
  text-shadow:0 2px 30px rgba(0,0,0,.25);
}
.hero h1 .hl{
  background:linear-gradient(96deg,#8FC0FF 0%,#4E96FF 46%,#7FB2FF 100%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  color:transparent;
}
.hero .lead{
  font-size:clamp(15px,1.35vw,18px);
  line-height:1.9;
  color:rgba(255,255,255,.76);
  max-width:660px;
  margin-bottom:38px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:60px;}

.hero-stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  max-width:760px;
  border-top:1px solid rgba(255,255,255,.14);
  padding-top:28px;
}
.hero-stats li{
  padding-right:18px;
  border-right:1px solid rgba(255,255,255,.12);
}
.hero-stats li:last-child{border-right:0;}
.hero-stats b{
  display:block;
  font-size:clamp(24px,2.6vw,34px);
  font-weight:700;
  color:#fff;
  line-height:1.2;
  letter-spacing:.01em;
}
.hero-stats b .unit{
  display:inline;
  font-size:.52em;
  font-weight:600;
  margin-left:2px;
  color:#8FC0FF;
  letter-spacing:0;
  vertical-align:baseline;
}
.hero-stats span{
  display:block;
  font-size:13px;
  color:rgba(255,255,255,.58);
  margin-top:7px;
  letter-spacing:.04em;
}

.hero-scroll{
  position:absolute;
  left:50%;
  bottom:26px;
  transform:translateX(-50%);
  width:24px;height:38px;
  border:1.5px solid rgba(255,255,255,.32);
  border-radius:14px;
  z-index:2;
}
.hero-scroll i{
  position:absolute;
  left:50%;top:7px;
  width:3px;height:7px;
  margin-left:-1.5px;
  border-radius:2px;
  background:rgba(255,255,255,.75);
  animation:scrollDot 1.8s infinite;
}
@keyframes scrollDot{
  0%{opacity:0;transform:translateY(0);}
  35%{opacity:1;}
  100%{opacity:0;transform:translateY(14px);}
}

/* 轮播项目标识与指示点 */
.hero-nav{
  position:absolute;
  right:26px;
  bottom:42px;
  z-index:3;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:12px;
}
.hero-project{
  font-size:12.5px;
  letter-spacing:.06em;
  color:rgba(255,255,255,.72);
  padding:7px 15px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(8,18,34,.42);
  backdrop-filter:blur(6px);
  white-space:nowrap;
}
.hero-dots{display:flex;gap:7px;}
.hero-dot{
  width:24px;
  height:3px;
  border-radius:2px;
  background:rgba(255,255,255,.26);
  padding:0;
  transition:background .35s var(--ease),width .35s var(--ease);
}
.hero-dot:hover{background:rgba(255,255,255,.5);}
.hero-dot.is-active{background:#fff;width:36px;}

/* =========================================================
   服务对象条
   ========================================================= */
.clients{
  background:#fff;
  border-bottom:1px solid var(--c-line);
}
.clients-wrap{
  display:flex;
  align-items:center;
  gap:34px;
  padding-top:26px;
  padding-bottom:26px;
  flex-wrap:wrap;
}
.clients-label{
  font-size:12.5px;
  letter-spacing:.2em;
  color:var(--c-muted);
  flex:none;
  padding-right:30px;
  border-right:1px solid var(--c-line);
  line-height:1.4;
}
.clients-list{
  display:flex;
  flex-wrap:wrap;
  gap:14px 34px;
  flex:1;
}
.clients-list li{
  font-size:15.5px;
  font-weight:600;
  color:#33465F;
  letter-spacing:.06em;
  position:relative;
  padding-left:14px;
}
.clients-list li::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:5px;height:5px;
  margin-top:-2.5px;
  border-radius:50%;
  background:var(--c-blue-2);
  opacity:.55;
}

/* =========================================================
   通用区块
   ========================================================= */
.section{padding:104px 0;}
.section-soft{background:var(--c-soft);}
/* 旗下业务专区：独立成带，与上下区块以描边 + 淡蓝色调明确分开 */
.section-subsidiary{
  position:relative;
  background:
    radial-gradient(880px 400px at 10% 0%,rgba(46,124,246,.11),transparent 62%),
    radial-gradient(720px 380px at 94% 100%,rgba(14,90,224,.08),transparent 66%),
    linear-gradient(180deg,#ECF3FF 0%,#F5F9FF 44%,#E9F1FD 100%);
  border-top:1px solid #DCE7F6;
  border-bottom:1px solid #DCE7F6;
}
.section-subsidiary::before{
  content:"";
  position:absolute;
  left:0;right:0;top:-1px;
  height:3px;
  background:linear-gradient(90deg,rgba(14,90,224,0) 0%,rgba(14,90,224,.55) 24%,rgba(46,124,246,.75) 52%,rgba(14,90,224,0) 100%);
}
.section-dark{
  background:linear-gradient(160deg,#0A1626 0%,#0D1F38 52%,#0A1930 100%);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.section-dark::before{
  content:"";
  position:absolute;
  top:-160px;right:-120px;
  width:560px;height:560px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(46,124,246,.26),transparent 68%);
  pointer-events:none;
}
.section-dark::after{
  content:"";
  position:absolute;
  bottom:-220px;left:-160px;
  width:620px;height:620px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(14,90,224,.18),transparent 70%);
  pointer-events:none;
}
.section-dark .wrap{position:relative;z-index:1;}

.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:56px;
  margin-bottom:56px;
}
.sec-head-center{
  display:block;
  text-align:center;
  max-width:720px;
  margin:0 auto 56px;
}
.sec-tag{
  display:inline-block;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--c-blue);
  margin-bottom:16px;
  padding-left:34px;
  position:relative;
}
.sec-tag::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:22px;height:2px;
  background:var(--c-blue);
  transform:translateY(-50%);
}
.sec-head-center .sec-tag{padding-left:0;}
.sec-head-center .sec-tag::before{display:none;}
.sec-tag.light{color:#7FB2FF;}
.sec-tag.light::before{background:#7FB2FF;}

.sec-title{
  font-size:clamp(24px,2.9vw,38px);
  line-height:1.34;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--c-text);
  text-wrap:balance;
}
.sec-title.light{color:#fff;}
.sec-desc{
  font-size:15.5px;
  line-height:1.9;
  color:var(--c-muted);
  max-width:430px;
  flex:none;
}
.sec-desc.light{color:rgba(255,255,255,.62);max-width:680px;margin:18px auto 0;}
.sec-head-center .sec-desc{max-width:560px;margin:18px auto 0;}

.link-inline{
  color:var(--c-blue);
  border-bottom:1px solid rgba(14,90,224,.32);
  transition:border-color .25s var(--ease);
}
.link-inline:hover{border-bottom-color:var(--c-blue);}

/* =========================================================
   主营业务卡片
   ========================================================= */
.svc-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:26px;
}
.svc-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
.svc-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:transparent;
}
.svc-media{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#EAF0F8;
}
.svc-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(10,22,38,.34),rgba(10,22,38,0) 55%);
}
.svc-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .7s var(--ease);
}
.svc-media img.focus-top{object-position:center 34%;}
.svc-media img.focus-mid{object-position:center 42%;}
.svc-card:hover .svc-media img{transform:scale(1.05);}

.svc-body{
  position:relative;
  padding:34px 34px 36px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.svc-icon{
  position:absolute;
  top:-30px;right:30px;
  width:60px;height:60px;
  border-radius:16px;
  background:#fff;
  border:1px solid var(--c-line);
  box-shadow:var(--shadow-md);
  display:grid;
  place-items:center;
  color:var(--c-blue);
}
.svc-icon svg{width:28px;height:28px;}
.svc-body h3{
  font-size:21px;
  font-weight:700;
  letter-spacing:.04em;
  margin-bottom:12px;
  padding-right:70px;
}
.svc-body > p{
  font-size:15px;
  line-height:1.86;
  color:var(--c-muted);
  margin-bottom:20px;
}
.svc-list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:9px 18px;
  margin-top:auto;
  padding-top:18px;
  border-top:1px dashed var(--c-line);
}
.svc-list li{
  font-size:14px;
  color:#3E5169;
  position:relative;
  padding-left:16px;
  line-height:1.6;
}
.svc-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--c-blue-2);
  transform:rotate(45deg);
  opacity:.7;
}

/* =========================================================
   旗下业务专区
   ========================================================= */
.sub-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.sub-card{
  position:relative;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
.sub-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-lg);
  border-color:transparent;
}
.sub-flag{
  position:absolute;
  top:16px;left:16px;
  z-index:2;
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.1em;
  color:#fff;
  background:rgba(8,18,34,.55);
  border:1px solid rgba(255,255,255,.22);
  backdrop-filter:blur(6px);
  border-radius:6px;
  padding:4px 10px;
}
.sub-media{
  aspect-ratio:16/9;
  overflow:hidden;
  background:#EAF0F8;
}
.sub-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .7s var(--ease);
}
.sub-card:hover .sub-media img{transform:scale(1.04);}
.sub-body{
  padding:28px 30px 30px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.sub-body h3{
  font-size:20px;
  font-weight:700;
  letter-spacing:.03em;
  margin-bottom:10px;
}
.sub-body > p{
  font-size:14.5px;
  line-height:1.85;
  color:var(--c-muted);
  margin-bottom:18px;
}
.sub-list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:9px 18px;
  margin-top:auto;
  padding-top:18px;
  border-top:1px dashed var(--c-line);
}
.sub-list li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  color:#3E5169;
  line-height:1.6;
}
.sub-list li::before{
  content:"";
  position:absolute;
  left:0;top:8px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--c-blue-2);
  opacity:.75;
}
.sub-cta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  margin-top:26px;
  padding:22px 28px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:14px;
}
.sub-cta p{
  font-size:14.5px;
  color:var(--c-muted);
}
.sub-actions{display:flex;gap:10px;flex:none;}
.sub-actions .btn{padding:12px 26px;font-size:14.5px;}

/* =========================================================
   品牌
   ========================================================= */
.brand-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  margin-bottom:32px;
}
.brand-grid li{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.1);
  border-radius:16px;
  padding:36px 20px;
  text-align:center;
  transition:background .35s var(--ease),border-color .35s var(--ease),transform .35s var(--ease);
}
.brand-grid li:hover{
  background:rgba(46,124,246,.14);
  border-color:rgba(127,178,255,.42);
  transform:translateY(-4px);
}
.brand-cn{
  display:block;
  font-size:clamp(19px,2vw,25px);
  font-weight:700;
  letter-spacing:.14em;
  color:#fff;
  margin-bottom:8px;
}
.brand-en{
  display:block;
  font-size:10.5px;
  letter-spacing:.28em;
  color:rgba(255,255,255,.42);
  font-weight:500;
}
.brand-note{
  text-align:center;
  font-size:14px;
  color:rgba(255,255,255,.44);
  letter-spacing:.03em;
}

/* =========================================================
   案例
   ========================================================= */
.case-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.case-card{
  grid-column:span 1;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
.case-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:transparent;
}
.case-wide{grid-column:span 2;}
.case-wide .case-media{aspect-ratio:21/9;}
.case-tall .case-media{aspect-ratio:4/5;}

/* 全宽横向案例卡 */
.case-full{
  grid-column:span 3;
  flex-direction:row;
  align-items:stretch;
}
.case-full .case-media{
  flex:0 0 40%;
  aspect-ratio:auto;
  min-height:300px;
}
.case-full .case-media img{object-position:center 32%;}
.case-full .case-body{
  flex:1;
  justify-content:center;
  padding:34px 44px;
}
.case-full .case-body > p{flex:none;font-size:15px;margin-bottom:22px;}
.case-full .case-body h3{font-size:22px;margin-bottom:14px;}
.case-full .case-body .case-meta{margin-top:0;}

.case-media{
  position:relative;
  aspect-ratio:3/2;
  overflow:hidden;
  background:#EAF0F8;
}
.case-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(10,22,38,.42),rgba(10,22,38,0) 52%);
}
.case-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .7s var(--ease);
}
.case-card:hover .case-media img{transform:scale(1.045);}

.case-body{
  padding:24px 26px 26px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.case-tag{
  align-self:flex-start;
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--c-blue);
  background:rgba(14,90,224,.075);
  border-radius:6px;
  padding:4px 10px;
  margin-bottom:14px;
}
.case-body h3{
  font-size:17.5px;
  font-weight:700;
  line-height:1.5;
  letter-spacing:.01em;
  margin-bottom:10px;
}
.case-wide .case-body h3{font-size:21px;}
.case-body > p{
  font-size:14.5px;
  line-height:1.85;
  color:var(--c-muted);
  margin-bottom:18px;
  flex:1;
}
.case-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  padding-top:16px;
  border-top:1px dashed var(--c-line);
}
.case-meta li{
  font-size:12.5px;
  color:#54677F;
  background:var(--c-soft);
  border-radius:6px;
  padding:5px 11px;
  letter-spacing:.02em;
}
.case-meta b{color:var(--c-blue);font-weight:700;}

/* =========================================================
   优势
   ========================================================= */
.adv-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:1px;
  background:var(--c-line);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  overflow:hidden;
}
.adv-item{
  background:#fff;
  padding:38px 32px 40px;
  transition:background .35s var(--ease);
}
.adv-item:hover{background:#FBFDFF;}
.adv-no{
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--c-blue-2);
  margin-bottom:18px;
  font-variant-numeric:tabular-nums;
}
.adv-item h3{
  font-size:17.5px;
  font-weight:700;
  margin-bottom:11px;
  letter-spacing:.02em;
}
.adv-item p{
  font-size:14.5px;
  line-height:1.85;
  color:var(--c-muted);
}

/* =========================================================
   流程
   ========================================================= */
.steps{
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:18px;
  counter-reset:step;
}
.steps li{
  position:relative;
  padding:32px 24px 30px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:14px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.steps li:hover{
  transform:translateY(-4px);
  border-color:rgba(46,124,246,.4);
  box-shadow:var(--shadow-md);
}
.steps li::after{
  content:"";
  position:absolute;
  top:46px;
  right:-13px;
  width:8px;height:8px;
  border-top:1.6px solid var(--c-line);
  border-right:1.6px solid var(--c-line);
  transform:rotate(45deg);
  z-index:1;
}
.steps li:last-child::after{display:none;}
.step-no{
  display:block;
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  color:#fff;
  background:linear-gradient(135deg,var(--c-blue-2),var(--c-blue));
  width:34px;height:26px;
  border-radius:7px;
  display:grid;
  place-items:center;
  margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.steps h3{
  font-size:16.5px;
  font-weight:700;
  margin-bottom:9px;
  letter-spacing:.03em;
}
.steps p{
  font-size:13.8px;
  line-height:1.8;
  color:var(--c-muted);
}

/* =========================================================
   联系我们
   ========================================================= */
.contact{
  background:linear-gradient(150deg,#081327 0%,#0C1E38 48%,#0A1A31 100%);
  padding:104px 0;
  position:relative;
  overflow:hidden;
}
.contact::before{
  content:"";
  position:absolute;
  top:-180px;right:-140px;
  width:640px;height:640px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(46,124,246,.22),transparent 66%);
}

/* 顶部：标题在左，导语在右 */
.contact-head{
  position:relative;
  z-index:1;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:64px;
  margin-bottom:56px;
}
.contact-title{
  font-size:clamp(25px,3vw,38px);
  line-height:1.4;
  font-weight:700;
  color:#fff;
  letter-spacing:.01em;
}
.contact-lead{
  font-size:15.5px;
  line-height:1.9;
  color:rgba(255,255,255,.6);
  max-width:520px;
  padding-bottom:4px;
}

/* 中部：四列联系方式，每列顶部一条发丝线 */
.contact-list{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:32px;
}
.contact-list li{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding-top:26px;
  border-top:1px solid rgba(255,255,255,.16);
  transition:border-color .35s var(--ease);
}
.contact-list li:hover{border-top-color:rgba(143,192,255,.5);}
.contact-list li:hover .ci-icon{background:rgba(46,124,246,.3);border-color:rgba(127,178,255,.42);}
.ci-icon{
  width:38px;height:38px;
  flex:none;
  border-radius:11px;
  background:rgba(46,124,246,.16);
  border:1px solid rgba(127,178,255,.24);
  display:grid;
  place-items:center;
  color:#8FC0FF;
  margin-top:1px;
}
.ci-icon svg{width:19px;height:19px;}
.contact-list em{
  display:block;
  font-style:normal;
  font-size:12px;
  letter-spacing:.16em;
  color:rgba(255,255,255,.4);
  margin-bottom:5px;
}
.contact-list strong,.contact-list .ci-tel{
  display:block;
  font-size:17px;
  font-weight:600;
  color:#fff;
  letter-spacing:.03em;
  line-height:1.45;
}
.contact-list .ci-tel{
  font-size:19px;
  letter-spacing:.06em;
  font-variant-numeric:tabular-nums;
  transition:color .25s var(--ease);
}
.contact-list .ci-tel:hover{color:#8FC0FF;}
.contact-list p{
  font-size:13px;
  line-height:1.7;
  color:rgba(255,255,255,.45);
  margin-top:6px;
}

/* 底部：横跨整行的行动卡 */
.contact-card{
  position:relative;
  z-index:1;
  margin-top:54px;
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:44px;
  background:linear-gradient(110deg,#FFFFFF 0%,#F1F7FF 100%);
  border-radius:18px;
  padding:24px 36px;
  box-shadow:0 30px 70px rgba(0,0,0,.34);
  overflow:hidden;
}
.contact-card::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:4px;
  background:linear-gradient(180deg,var(--c-blue-2),var(--c-blue) 52%,#7FB2FF);
}
.cc-qr{
  display:flex;
  align-items:center;
  gap:16px;
  min-width:0;
}
.cc-qr img{
  width:96px;height:96px;
  flex:none;
  display:block;
  border-radius:8px;
  border:1px solid var(--c-line);
  background:#fff;
}
.cc-qr-text{min-width:0;}
.cc-qr-text strong{
  display:block;
  font-size:14.5px;
  font-weight:600;
  color:var(--c-text);
  line-height:1.5;
  letter-spacing:.01em;
  margin-bottom:6px;
}
.cc-qr-text span{
  display:block;
  font-size:12.6px;
  line-height:1.7;
  color:#67798F;
}
.cc-call{
  min-width:0;
  padding-left:44px;
  border-left:1px dashed #D3E1F2;
}
.cc-label{
  font-size:12px;
  letter-spacing:.12em;
  color:var(--c-blue);
  font-weight:700;
  margin-bottom:8px;
}
.cc-tel{
  display:block;
  font-size:clamp(26px,3vw,34px);
  font-weight:700;
  letter-spacing:.04em;
  color:var(--c-text);
  line-height:1.16;
  font-variant-numeric:tabular-nums;
  transition:color .25s var(--ease);
}
.cc-tel:hover{color:var(--c-blue);}
.cc-sub{
  font-size:13px;
  color:var(--c-muted);
  margin-top:8px;
}
.cc-actions{
  display:flex;
  gap:10px;
  flex:none;
}
.cc-actions .btn{padding:13px 24px;font-size:14.5px;}

.contact-note{
  position:relative;
  z-index:1;
  margin-top:20px;
  font-size:13.2px;
  line-height:1.7;
  color:rgba(255,255,255,.42);
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  background:#071021;
  color:rgba(255,255,255,.55);
  padding-top:64px;
}
.footer-wrap{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:52px;
}
.brand-footer .brand-text strong{color:#fff;}
.brand-footer .brand-text em{color:rgba(255,255,255,.4);}
.footer-brand p{
  font-size:13.8px;
  line-height:1.9;
  color:rgba(255,255,255,.44);
  margin-top:20px;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:#fff;
  letter-spacing:.1em;
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col li{
  font-size:13.8px;
  color:rgba(255,255,255,.5);
  line-height:1.7;
}
.footer-col a{transition:color .25s var(--ease);}
.footer-col a:hover{color:#8FC0FF;}
.footer-bar{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0;
}
.footer-bar .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bar p{
  font-size:12.8px;
  color:rgba(255,255,255,.34);
  letter-spacing:.03em;
}

/* =========================================================
   移动端底部条
   ========================================================= */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:90;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--c-line);
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  gap:10px;
}
.mb-call,.mb-quote{
  flex:1;
  height:48px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15.5px;
  font-weight:600;
  letter-spacing:.04em;
}
.mb-call{
  background:linear-gradient(135deg,var(--c-blue-2),var(--c-blue));
  color:#fff;
  box-shadow:0 8px 18px rgba(14,90,224,.26);
}
.mb-call svg{width:17px;height:17px;}
.mb-quote{
  background:var(--c-soft);
  color:var(--c-text);
  border:1px solid var(--c-line);
}

/* =========================================================
   滚动进入动画
   ========================================================= */
.reveal{
  opacity:0;
  transform:translateY(26px);
  transition:opacity .75s var(--ease),transform .75s var(--ease);
}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* =========================================================
   响应式：1180 / 1024 / 900 / 768 / 560
   ========================================================= */
@media (max-width:1180px){
  .nav a{padding:8px 10px;font-size:14.2px;}
  .nav-tel span{display:none;}
  .nav-tel{padding:11px;}
  .contact-head{gap:44px;}
  .contact-list{gap:26px;}
  .contact-card{gap:32px;padding:22px 30px;}
  .cc-call{padding-left:32px;}
}

@media (max-width:1024px){
  .section{padding:84px 0;}
  .contact{padding:84px 0;}
  .contact-card{gap:26px;padding:22px 26px;}
  .cc-call{padding-left:26px;}
  .cc-qr img{width:84px;height:84px;}
  .cc-qr-text strong{font-size:13.6px;}
  .cc-tel{font-size:29px;}
  .cc-actions .btn{padding:12px 18px;font-size:14px;}
  .sec-head{gap:36px;margin-bottom:44px;}
  .sec-desc{max-width:340px;font-size:14.5px;}
  .hero-stats{max-width:100%;}
  .svc-grid{gap:20px;}
  .svc-body{padding:30px 28px 32px;}
  .case-grid{gap:20px;}
  .adv-item{padding:32px 26px 34px;}
  .footer-wrap{grid-template-columns:1.4fr 1fr 1fr;gap:36px;}
  .footer-col:last-child{grid-column:span 3;display:flex;gap:34px;flex-wrap:wrap;align-items:center;}
  .footer-col:last-child h4{margin-bottom:0;}
  .footer-col:last-child ul{grid-auto-flow:column;gap:26px;}
}

@media (max-width:900px){
  .nav{
    position:fixed;
    top:0;right:0;
    width:min(86vw,340px);
    height:100vh;
    height:100svh;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    padding:96px 26px 40px;
    gap:0;
    box-shadow:-20px 0 60px rgba(10,30,70,.16);
    transform:translateX(102%);
    transition:transform .4s var(--ease);
    z-index:95;
  }
  .nav.is-open{transform:translateX(0);}
  .nav a{
    color:var(--c-text);
    font-size:16.5px;
    padding:17px 4px;
    border-bottom:1px solid var(--c-line);
    border-radius:0;
    font-weight:600;
  }
  .nav a::after{display:none;}
  .nav a:hover{color:var(--c-blue);background:none;}
  .burger{display:block;z-index:96;}
  .nav-tel{display:none;}
  .nav-mask{display:block;}

  .hero-inner{padding-top:110px;padding-bottom:100px;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 0;}
  .hero-stats li:nth-child(2){border-right:0;}
  .hero-stats li:nth-child(3){padding-left:0;}

  .sec-head{display:block;}
  .sec-desc{max-width:none;margin-top:18px;}

  .svc-grid{grid-template-columns:1fr;}
  .sub-grid{grid-template-columns:1fr;}
  .brand-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
  .brand-grid li{padding:28px 14px;}

  .case-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
  .case-wide{grid-column:span 2;}
  .case-wide .case-media{aspect-ratio:16/9;}
  .case-tall .case-media{aspect-ratio:4/5;}
  .case-full{grid-column:span 2;flex-direction:column;}
  .case-full .case-media{flex:none;aspect-ratio:16/10;min-height:0;}
  .case-full .case-media img{object-position:center 34%;}

  .adv-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps li::after{display:none;}

  .contact-head{display:block;margin-bottom:40px;}
  .contact-lead{max-width:none;margin-top:18px;padding-bottom:0;}
  .contact-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 32px;}
  .contact-card{grid-template-columns:minmax(0,1fr) auto;gap:20px 30px;}
  .cc-actions{grid-column:1 / -1;display:grid;grid-template-columns:1fr 1fr;}

  .footer-wrap{grid-template-columns:1fr 1fr;gap:34px;}
  .footer-col:last-child{grid-column:span 2;flex-direction:column;align-items:flex-start;gap:14px;}
  .footer-col:last-child ul{grid-auto-flow:row;gap:10px;}

  body{padding-bottom:0;}
  .mobile-bar{display:flex;}
  body{padding-bottom:76px;}
}

@media (max-width:560px){
  .wrap{padding:0 18px;}
  html{scroll-padding-top:66px;}
  .nav-wrap{height:66px;}
  .brand-mark{width:38px;height:38px;padding:4px;border-radius:10px;}
  .brand-text strong{font-size:16.5px;}
  .brand-text em{font-size:8px;}

  .section{padding:64px 0;}
  .contact{padding:64px 0;}
  .sec-title{font-size:23px;}
  .sec-head{margin-bottom:34px;}

  .hero{min-height:92svh;}
  .hero-inner{padding-top:100px;padding-bottom:88px;}
  .eyebrow{font-size:11.5px;letter-spacing:.08em;padding:7px 14px 7px 11px;}
  .hero h1{font-size:27px;line-height:1.36;margin-bottom:20px;}
  .hero .lead{font-size:14.5px;line-height:1.85;margin-bottom:30px;}
  .hero-actions{gap:10px;margin-bottom:44px;}
  .btn{padding:13px 24px;font-size:14.5px;flex:1;min-width:0;}
  .hero-actions .btn{flex:1 1 auto;}
  .hero-stats{padding-top:22px;gap:22px 0;}
  .hero-stats b{font-size:26px;}
  .hero-stats span{font-size:11.8px;}
  .hero-scroll{display:none;}
  .pc-only{display:none;}

  .clients-wrap{gap:16px;padding-top:20px;padding-bottom:20px;}
  .clients-label{border-right:0;padding-right:0;width:100%;}
  .clients-list{gap:10px 22px;}
  .clients-list li{font-size:14px;}

  .svc-body{padding:28px 22px 28px;}
  .svc-body h3{font-size:19px;}
  .svc-list{grid-template-columns:1fr;gap:8px;}
  .sub-body{padding:24px 22px 26px;}
  .sub-body h3{font-size:18px;}
  .sub-list{grid-template-columns:1fr;gap:8px;}
  .sub-cta{flex-direction:column;align-items:flex-start;gap:16px;padding:20px 22px;}
  .sub-actions{width:100%;}
  .sub-actions .btn{flex:1;}

  .hero-nav{right:16px;bottom:22px;gap:9px;}
  .hero-project{font-size:11px;padding:6px 12px;letter-spacing:.02em;}
  .hero-dot{width:18px;}
  .hero-dot.is-active{width:26px;}
  .svc-icon{width:52px;height:52px;top:-26px;right:20px;border-radius:14px;}
  .svc-icon svg{width:24px;height:24px;}

  .brand-grid{gap:10px;}
  .brand-cn{font-size:17px;letter-spacing:.1em;}
  .brand-en{font-size:9px;letter-spacing:.2em;}
  .brand-grid li{padding:24px 10px;}
  .brand-note{font-size:12.5px;}

  .case-grid{grid-template-columns:1fr;gap:16px;}
  .case-wide{grid-column:span 1;}
  .case-full{grid-column:span 1;flex-direction:column;}
  .case-full .case-body{padding:22px 20px 24px;}
  .case-full .case-body h3{font-size:18px;}
  .case-wide .case-media{aspect-ratio:3/2;}
  .case-wide .case-body h3{font-size:17.5px;}
  .case-tall .case-media{aspect-ratio:16/10;}
  .case-body{padding:20px 20px 22px;}

  .adv-grid{grid-template-columns:1fr;}
  .adv-item{padding:28px 22px 30px;}
  .steps{grid-template-columns:1fr;gap:12px;}
  .steps li{padding:26px 22px;}

  .contact-title{font-size:24px;}
  .contact-lead{font-size:14.5px;margin-top:16px;}
  .contact-list{grid-template-columns:1fr;gap:0;}
  .contact-list li{padding:18px 0 2px;gap:13px;}
  .contact-list .ci-tel{font-size:19px;}
  .ci-icon{width:36px;height:36px;border-radius:10px;}
  .ci-icon svg{width:18px;height:18px;}
  .contact-card{grid-template-columns:1fr;gap:18px;padding:22px 20px;border-radius:16px;margin-top:34px;}
  .cc-qr{gap:13px;}
  .cc-qr img{width:88px;height:88px;}
  .cc-call{padding-left:0;border-left:0;padding-top:18px;border-top:1px dashed #D3E1F2;}
  .cc-tel{font-size:28px;}
  .cc-actions{grid-column:auto;}
  .contact-note{font-size:12.6px;margin-top:16px;}
  .cc-qr-text span{font-size:12.2px;}

  .footer-wrap{grid-template-columns:1fr;gap:30px;padding-bottom:38px;}
  .footer-col:last-child{grid-column:span 1;}
  .footer-bar .wrap{flex-direction:column;gap:6px;text-align:center;}
}