/* ============================================================
   时代秀科技（北京）有限公司 — 官网样式 v2
   设计语言：高级深蓝 / 柔和正蓝 / 大留白 / 细腻层次
   ============================================================ */

:root{
  /* 深蓝家族（同一色相，层次递进，不发黑） */
  --navy-950:#081A36;
  --navy-900:#0B2246;
  --navy-800:#0F2C58;
  --navy-700:#153A73;
  --navy-600:#1B4A8F;

  /* 品牌主蓝（柔和正蓝，去荧光） */
  --blue-600:#1E5EDB;
  --blue-500:#2E6FE8;
  --blue-400:#5B8FF0;
  --blue-100:#DCE8FB;
  --blue-50:#F0F5FD;

  /* 中性色 */
  --ink-900:#16233C;
  --ink-700:#2C3B58;
  --ink-500:#5A6A85;
  --ink-400:#8291A9;
  --line:#E4EAF3;
  --bg-soft:#F5F8FC;
  --bg-tint:#EDF3FA;
  --white:#FFFFFF;

  /* 阴影（蓝调柔影，不用黑影） */
  --sh-sm:0 2px 10px rgba(20,48,102,.06);
  --sh-md:0 10px 28px rgba(20,48,102,.10);
  --sh-lg:0 20px 48px rgba(16,42,94,.16);

  --radius:14px;
  --radius-lg:22px;
  --maxw:1180px;
  --nav-h:72px;
  --dur:6.5s; /* 轮播节奏，与 JS 保持一致 */
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink-700);
  background:var(--white);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
section{scroll-margin-top:calc(var(--nav-h) + 8px)}

/* ---------- 通用节标题 ---------- */
.section{padding:92px 0}
.sec-head{max-width:720px;margin:0 auto 56px;text-align:center}
.sec-head .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:3px;color:var(--blue-600);
  padding:6px 16px;border-radius:999px;background:var(--blue-50);
  border:1px solid var(--blue-100);margin-bottom:16px;
}
.sec-head .kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--blue-500)}
.sec-head h2{font-size:34px;font-weight:800;color:var(--ink-900);letter-spacing:-.3px;line-height:1.3}
.sec-head p{margin-top:14px;color:var(--ink-500);font-size:16px}
.sec-head.light h2{color:#fff}
.sec-head.light p{color:rgba(255,255,255,.72)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;border-radius:10px;font-weight:700;font-size:15px;
  border:0;transition:all .25s ease;white-space:nowrap;
}
.btn svg{transition:transform .25s}
.btn:hover svg{transform:translateX(3px)}
.btn-primary{background:var(--blue-600);color:#fff;box-shadow:0 8px 20px rgba(30,94,219,.28)}
.btn-primary:hover{background:var(--blue-500);transform:translateY(-2px);box-shadow:0 12px 26px rgba(30,94,219,.36)}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.42);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
.btn-line{background:#fff;color:var(--blue-600);border:1.5px solid var(--blue-100)}
.btn-line:hover{border-color:var(--blue-500);transform:translateY(-2px);box-shadow:var(--sh-sm)}

/* 滚动浮现 */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s ease;transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}

/* ============================================================
   导航
   ============================================================ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);
  transition:background .35s,box-shadow .35s,height .35s;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:42px;height:42px;border-radius:50%;box-shadow:0 3px 12px rgba(0,0,0,.22)}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:18px;font-weight:800;letter-spacing:1px;color:#fff;transition:color .3s}
.brand-text i{font-style:normal;font-size:10.5px;letter-spacing:2.5px;color:var(--blue-400);font-weight:600;transition:color .3s}

.menu{display:flex;align-items:center;gap:4px}
.menu > a{
  padding:10px 16px;border-radius:9px;font-size:15px;font-weight:500;
  color:rgba(255,255,255,.85);transition:all .25s;
}
.menu > a:hover{color:#fff;background:rgba(255,255,255,.12)}
.menu > a.cta{
  margin-left:10px;padding:10px 22px;background:var(--blue-600);color:#fff;font-weight:700;border-radius:10px;
  box-shadow:0 6px 16px rgba(30,94,219,.35);
}
.menu > a.cta:hover{background:var(--blue-500)}

/* 滚动后：白底玻璃 */
.nav.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line),0 8px 24px rgba(20,48,102,.08);height:64px}
.nav.scrolled .brand-text b{color:var(--ink-900)}
.nav.scrolled .brand-text i{color:var(--blue-500)}
.nav.scrolled .brand img{box-shadow:0 2px 8px rgba(20,48,102,.18)}
.nav.scrolled .menu > a{color:var(--ink-500)}
.nav.scrolled .menu > a:hover{color:var(--blue-600);background:var(--blue-50)}
.nav.scrolled .menu > a.cta{color:#fff}

.burger{display:none;flex-direction:column;gap:5px;background:transparent;border:0;padding:10px}
.burger span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s}
.nav.scrolled .burger span{background:var(--ink-900)}
.nav.open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.open .burger span:nth-child(2){opacity:0}
.nav.open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============================================================
   首屏轮播
   ============================================================ */
.hero{position:relative;height:100vh;min-height:640px;overflow:hidden;background:var(--navy-900)}
@supports(height:100svh){.hero{height:100svh}}

.slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity 1.1s ease,visibility 1.1s;z-index:1}
.slide.active{opacity:1;visibility:visible;z-index:2}
.slide-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scale(1.06);transition:transform 7s ease-out}
.slide.active .slide-bg{transform:scale(1)}
.slide-shade{position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(8,26,54,.82) 0%,rgba(8,26,54,.55) 45%,rgba(8,26,54,.18) 75%,rgba(8,26,54,.30) 100%),
             linear-gradient(180deg,rgba(8,26,54,.55) 0%,transparent 30%,rgba(8,26,54,.62) 100%);
}

.slide-inner{
  position:relative;z-index:3;height:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px;
  display:flex;flex-direction:column;justify-content:center;align-items:flex-start;
}
.slide .k{ /* 眉标 */
  display:inline-flex;align-items:center;gap:9px;
  font-size:13.5px;font-weight:700;letter-spacing:2.5px;color:#CFE0FA;
  padding:8px 18px;border-radius:999px;border:1px solid rgba(255,255,255,.28);
  background:rgba(10,30,64,.42);backdrop-filter:blur(6px);margin-bottom:22px;
}
.slide .k::before{content:"";width:7px;height:7px;border-radius:50%;background:#6FA3F2;box-shadow:0 0 0 3px rgba(111,163,242,.25)}
.slide h1{
  font-size:clamp(34px,4.6vw,58px);font-weight:800;color:#fff;line-height:1.22;
  letter-spacing:-.5px;max-width:720px;text-wrap:balance;
  text-shadow:0 2px 24px rgba(4,12,28,.5);
}
.slide .desc{
  margin-top:20px;font-size:clamp(15px,1.4vw,17.5px);color:rgba(255,255,255,.86);
  max-width:600px;text-shadow:0 1px 14px rgba(4,12,28,.5);
}
.slide .acts{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}

/* 首屏文案入场上浮 */
.slide .k,.slide h1,.slide .desc,.slide .acts{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.slide.active .k{opacity:1;transform:none;transition-delay:.25s}
.slide.active h1{opacity:1;transform:none;transition-delay:.4s}
.slide.active .desc{opacity:1;transform:none;transition-delay:.55s}
.slide.active .acts{opacity:1;transform:none;transition-delay:.7s}

/* 轮播控件 */
.hero-arrows{position:absolute;z-index:6;bottom:44px;right:40px;display:flex;gap:12px}
.arrow{
  width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.35);
  background:rgba(10,30,64,.45);backdrop-filter:blur(6px);color:#fff;
  display:grid;place-items:center;transition:.25s;
}
.arrow:hover{background:var(--blue-600);border-color:var(--blue-600)}
.dots{position:absolute;z-index:6;left:0;right:0;bottom:56px;display:flex;justify-content:center;gap:10px}
.dot{width:34px;height:4px;border-radius:99px;border:0;padding:0;background:rgba(255,255,255,.30);overflow:hidden}
.dot i{display:block;height:100%;width:100%;background:#fff;transform:scaleX(0);transform-origin:left;border-radius:99px}
.dot.active i{animation:dotfill var(--dur) linear forwards}
.hero:hover .dot.active i{animation-play-state:paused}
@keyframes dotfill{to{transform:scaleX(1)}}

.scroll-hint{
  position:absolute;z-index:6;left:50%;bottom:96px;transform:translateX(-50%);
  color:rgba(255,255,255,.65);font-size:12px;letter-spacing:3px;
  display:flex;flex-direction:column;align-items:center;gap:8px;pointer-events:none;
}
.scroll-hint::after{content:"";width:1.5px;height:34px;background:linear-gradient(rgba(255,255,255,.7),transparent);animation:drop 2s ease infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}55%{transform:scaleY(1);transform-origin:top}56%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ============================================================
   关于我们 / 总部
   ============================================================ */
.about{background:#fff}
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.about-copy .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:3px;
  color:var(--blue-600);padding:6px 16px;border-radius:999px;background:var(--blue-50);
  border:1px solid var(--blue-100);margin-bottom:16px;
}
.about-copy .kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--blue-500)}
.about-copy h2{font-size:33px;font-weight:800;color:var(--ink-900);line-height:1.35;margin-bottom:18px}
.about-copy h2 em{font-style:normal;color:var(--blue-600)}
.about-copy p{color:var(--ink-500);font-size:15.5px;margin-bottom:16px}
.vm-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}
.vm{background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:18px 16px;transition:.25s}
.vm:hover{border-color:var(--blue-100);box-shadow:var(--sh-sm);transform:translateY(-3px)}
.vm b{display:flex;align-items:center;gap:7px;color:var(--blue-600);font-size:13.5px;letter-spacing:2px;margin-bottom:7px}
.vm b::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--blue-500)}
.vm span{font-size:13px;color:var(--ink-500);line-height:1.65}

.about-visual{position:relative}
.about-visual .frame{
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--sh-lg);
  border:1px solid var(--line);
}
.about-visual .frame img{width:100%;height:440px;object-fit:cover;transition:transform .8s ease}
.about-visual:hover .frame img{transform:scale(1.04)}
.badge-card{
  position:absolute;left:-26px;bottom:34px;background:#fff;border-radius:14px;
  box-shadow:var(--sh-md);border:1px solid var(--line);padding:16px 20px;
  display:flex;align-items:center;gap:13px;
}
.badge-card .ic{width:42px;height:42px;border-radius:11px;background:var(--blue-50);display:grid;place-items:center;color:var(--blue-600)}
.badge-card b{display:block;font-size:14.5px;color:var(--ink-900)}
.badge-card span{font-size:12.5px;color:var(--ink-400)}

/* ============================================================
   数据条带
   ============================================================ */
.stats{
  position:relative;color:#fff;overflow:hidden;
  background:linear-gradient(115deg,var(--navy-900) 0%,var(--navy-700) 58%,var(--navy-600) 100%);
}
.stats::before{content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 30%,#000 70%,transparent);
          mask-image:linear-gradient(90deg,transparent,#000 30%,#000 70%,transparent);}
.stats-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:56px 0}
.stat{text-align:center;padding:0 10px;position:relative}
.stat + .stat::before{content:"";position:absolute;left:0;top:18%;height:64%;width:1px;background:rgba(255,255,255,.14)}
.stat b{font-size:44px;font-weight:800;line-height:1.1;letter-spacing:-1px;
  background:linear-gradient(180deg,#fff 30%,#BFD6F8);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat span{display:block;margin-top:8px;font-size:13.5px;letter-spacing:2px;color:rgba(255,255,255,.72)}

/* ============================================================
   四大业务
   ============================================================ */
.biz{background:var(--bg-soft)}
.biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.biz-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:all .3s ease;position:relative;
}
.biz-card::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--blue-600),var(--blue-400));transform:scaleX(0);transform-origin:left;transition:transform .35s ease}
.biz-card:hover{transform:translateY(-8px);box-shadow:var(--sh-md);border-color:transparent}
.biz-card:hover::after{transform:scaleX(1)}
.biz-media{position:relative;aspect-ratio:16/10;overflow:hidden}
.biz-media img{width:100%;height:100%;object-fit:cover;transition:transform .7s ease}
.biz-card:hover .biz-media img{transform:scale(1.07)}
.biz-media .no{
  position:absolute;left:14px;top:14px;font-size:12px;font-weight:800;letter-spacing:1px;
  color:#fff;background:rgba(8,26,54,.55);backdrop-filter:blur(6px);
  padding:5px 11px;border-radius:999px;border:1px solid rgba(255,255,255,.25);
}
.biz-body{padding:24px 22px 26px;display:flex;flex-direction:column;flex:1}
.biz-body h3{font-size:20px;font-weight:800;color:var(--ink-900)}
.biz-body .en{font-size:11.5px;letter-spacing:1.6px;color:var(--ink-400);margin:5px 0 12px;font-weight:600}
.biz-body p{font-size:14px;color:var(--ink-500);line-height:1.75;flex:1}
.biz-body .more{
  margin-top:18px;display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:700;color:var(--blue-600);
}
.biz-body .more svg{transition:transform .25s}
.biz-card:hover .more svg{transform:translateX(4px)}

/* ============================================================
   低空经济
   ============================================================ */
.low{background:#fff}
.low-band{
  display:grid;grid-template-columns:1.05fr .95fr;
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--sh-lg);
  background:linear-gradient(120deg,var(--navy-900) 0%,var(--navy-800) 55%,var(--navy-700) 100%);
  position:relative;
}
.low-band::before{content:"";position:absolute;inset:0;opacity:.45;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:40px 40px;
  -webkit-mask-image:radial-gradient(circle at 20% 30%,#000,transparent 75%);
          mask-image:radial-gradient(circle at 20% 30%,#000,transparent 75%);}
.low-copy{position:relative;padding:56px 54px;color:#fff}
.low-copy .newtag{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:2.5px;color:var(--navy-900);
  background:linear-gradient(100deg,#9CC8FF,#5B8FF0);padding:6px 15px;border-radius:999px;margin-bottom:18px;
}
.low-copy h2{font-size:31px;font-weight:800;line-height:1.35;margin-bottom:14px}
.low-copy .lead{color:rgba(255,255,255,.78);font-size:15px;margin-bottom:28px}
.low-items{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:30px}
.low-item{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.13);border-radius:12px;padding:16px 16px;transition:.25s}
.low-item:hover{background:rgba(255,255,255,.13);transform:translateY(-3px)}
.low-item .ic{width:38px;height:38px;border-radius:10px;background:rgba(122,166,240,.18);display:grid;place-items:center;color:#9CC8FF;margin-bottom:11px}
.low-item b{display:block;font-size:14.5px;margin-bottom:3px}
.low-item span{font-size:12.5px;color:rgba(255,255,255,.62);line-height:1.6}
.low-copy .btn-primary{box-shadow:0 10px 26px rgba(0,0,0,.3)}
.low-media{position:relative;min-height:420px}
.low-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.low-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--navy-800) 0%,transparent 30%)}
.float-card{
  position:absolute;z-index:3;right:28px;bottom:30px;background:rgba(255,255,255,.96);
  border-radius:14px;box-shadow:var(--sh-md);padding:16px 20px;min-width:210px;
}
.float-card b{font-size:24px;font-weight:800;color:var(--blue-600);display:block;line-height:1.2}
.float-card span{font-size:12.5px;color:var(--ink-400);letter-spacing:1px}

/* ============================================================
   核心能力
   ============================================================ */
.cap{background:var(--bg-soft)}
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cap-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 30px;transition:all .3s ease;position:relative;overflow:hidden;
}
.cap-card:hover{transform:translateY(-6px);box-shadow:var(--sh-md)}
.cap-card .num{
  font-size:15px;font-weight:800;letter-spacing:2px;color:var(--blue-600);
  display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;
}
.cap-card .num::after{content:"";width:34px;height:2px;background:linear-gradient(90deg,var(--blue-600),transparent);border-radius:2px}
.cap-card h3{font-size:20px;font-weight:800;color:var(--ink-900);margin-bottom:10px}
.cap-card p{font-size:14px;color:var(--ink-500);line-height:1.8}
.cap-card ul{margin-top:16px;border-top:1px dashed var(--line);padding-top:14px}
.cap-card li{font-size:13.5px;color:var(--ink-500);padding:5px 0 5px 20px;position:relative}
.cap-card li::before{content:"";position:absolute;left:2px;top:13px;width:7px;height:7px;border-radius:50%;
  background:var(--blue-100);box-shadow:0 0 0 2.5px var(--blue-50)}

/* ============================================================
   新闻动态
   ============================================================ */
.news{background:#fff}
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px}
.news-head h2{font-size:32px;font-weight:800;color:var(--ink-900);letter-spacing:-.3px}
.news-head .sub{color:var(--ink-400);font-size:14px;margin-top:8px}
.news-head .more{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:700;color:var(--blue-600);padding:10px 20px;border:1.5px solid var(--blue-100);border-radius:10px;transition:.25s;flex-shrink:0}
.news-head .more:hover{border-color:var(--blue-500);background:var(--blue-50)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:all .3s ease;
}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--sh-md)}
.news-media{aspect-ratio:16/9;overflow:hidden;position:relative}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .7s ease}
.news-card:hover .news-media img{transform:scale(1.06)}
.news-media .tag{
  position:absolute;left:14px;top:14px;font-size:12px;font-weight:700;color:#fff;
  background:rgba(30,94,219,.88);backdrop-filter:blur(4px);padding:5px 12px;border-radius:999px;
}
.news-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1}
.news-body time{font-size:12.5px;color:var(--ink-400);letter-spacing:1px}
.news-body h3{font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.55;margin:9px 0 10px;transition:color .25s}
.news-card:hover .news-body h3{color:var(--blue-600)}
.news-body p{
  font-size:13.5px;color:var(--ink-500);line-height:1.75;flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body .more{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:700;color:var(--blue-600)}
.news-body .more svg{transition:transform .25s}
.news-card:hover .more svg{transform:translateX(4px)}

/* ============================================================
   客户
   ============================================================ */
.clients{background:var(--bg-soft)}
.clients-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.client{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 16px;text-align:center;
  transition:.25s;
}
.client b{display:block;font-size:15px;font-weight:700;color:var(--ink-900);line-height:1.5}
.client span{display:block;margin-top:5px;font-size:12px;color:var(--ink-400);letter-spacing:1px}
.client:hover{transform:translateY(-4px);box-shadow:var(--sh-sm);border-color:var(--blue-100)}
.client:hover b{color:var(--blue-600)}

/* ============================================================
   联系我们
   ============================================================ */
.contact{
  position:relative;color:#fff;overflow:hidden;
  background:linear-gradient(118deg,var(--navy-950) 0%,var(--navy-800) 55%,var(--navy-700) 100%);
}
.contact::before{content:"";position:absolute;inset:0;opacity:.4;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(circle at 25% 45%,#000,transparent 72%);
          mask-image:radial-gradient(circle at 25% 45%,#000,transparent 72%);}
.contact-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.contact-copy .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:3px;
  color:#9CC8FF;padding:6px 16px;border-radius:999px;background:rgba(122,166,240,.12);
  border:1px solid rgba(122,166,240,.3);margin-bottom:16px;
}
.contact-copy .kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:#9CC8FF}
.contact-copy h2{font-size:32px;font-weight:800;line-height:1.4;margin-bottom:14px}
.contact-copy > p{color:rgba(255,255,255,.72);font-size:15px;margin-bottom:32px;max-width:440px}
.info-row{display:flex;gap:16px;align-items:flex-start;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.info-row:last-child{border-bottom:0}
.info-row .ic{width:46px;height:46px;border-radius:12px;background:rgba(122,166,240,.14);border:1px solid rgba(122,166,240,.25);display:grid;place-items:center;color:#9CC8FF;flex-shrink:0}
.info-row b{display:block;font-size:13px;color:rgba(255,255,255,.6);letter-spacing:1px;margin-bottom:3px}
.info-row span{font-size:15.5px;font-weight:600;letter-spacing:.3px}

.form-card{background:#fff;border-radius:var(--radius-lg);padding:38px 34px;box-shadow:var(--sh-lg);color:var(--ink-700)}
.form-card h3{font-size:21px;font-weight:800;color:var(--ink-900);margin-bottom:6px}
.form-card .tip{font-size:13px;color:var(--ink-400);margin-bottom:24px}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{margin-bottom:15px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-700);margin-bottom:7px}
.field label i{color:#D64545;font-style:normal;margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:10px;border:1.5px solid var(--line);
  background:var(--bg-soft);font-size:14px;font-family:inherit;color:var(--ink-900);
  transition:border-color .2s,box-shadow .2s,background .2s;appearance:none;
}
.field textarea{resize:vertical;min-height:104px}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-400)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--blue-500);background:#fff;box-shadow:0 0 0 3.5px rgba(30,94,219,.12);
}
.form-card .btn-primary{width:100%;margin-top:6px;padding:15px}
.form-note{
  display:none;margin-top:14px;padding:11px 14px;border-radius:10px;font-size:13.5px;
  background:#EDFAF3;color:#1B7A46;border:1px solid #BFE8CF;
}
.form-note.show{display:block}
/* 合作咨询表单的三种状态：正在提交 / 成功 / 失败。
   提交态也要 display:block，否则用户点了提交看不到任何反馈，会以为页面卡了。 */
.form-note.showing,
.form-note.ok,
.form-note.err{display:block}
.form-note.ok{background:#EDFAF3;color:#1B7A46;border:1px solid #BFE8CF}
.form-note.err{background:#FEF0F0;color:#B32424;border:1px solid #F5C4C4}
.form-note.showing{background:#F2F6FF;color:#37435C;border:1px solid #D9E4F7}

/* ============================================================
   页脚
   ============================================================ */
.footer{background:var(--navy-950);color:rgba(255,255,255,.62);padding:64px 0 28px}
.foot-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:44px}
.foot-brand .brand{margin-bottom:16px}
.foot-brand p{font-size:13.5px;line-height:1.8;max-width:300px}
.foot-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:1px}
.foot-col a{display:block;font-size:13.5px;padding:5.5px 0;color:rgba(255,255,255,.62);transition:.2s}
.foot-col a:hover{color:#9CC8FF;transform:translateX(3px)}
.foot-col .sub-line{font-size:13.5px;padding:5.5px 0;line-height:1.6}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-top:24px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;font-size:12.5px;
}
.foot-bottom a{color:rgba(255,255,255,.62)}
.foot-bottom a:hover{color:#9CC8FF}

/* 返回顶部 */
.totop{
  position:fixed;right:26px;bottom:30px;z-index:90;width:46px;height:46px;border-radius:50%;
  background:var(--blue-600);color:#fff;border:0;display:grid;place-items:center;
  box-shadow:0 10px 24px rgba(30,94,219,.4);opacity:0;visibility:hidden;transform:translateY(14px);
  transition:.3s;
}
.totop.show{opacity:1;visibility:visible;transform:none}
.totop:hover{background:var(--blue-500)}

/* ============================================================
   响应式
   ============================================================ */
@media(max-width:1080px){
  .biz-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid{gap:44px}
  .low-copy{padding:44px 38px}
}
@media(max-width:920px){
  .section{padding:68px 0}
  .about-grid,.contact-grid{grid-template-columns:1fr}
  .about-visual{order:-1}
  .about-visual .frame img{height:320px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:30px;padding:46px 0}
  .stat + .stat::before{display:none}
  .cap-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto}
  .news-head{flex-direction:column;align-items:flex-start}
  .clients-grid{grid-template-columns:repeat(2,1fr)}
  .low-band{grid-template-columns:1fr}
  .low-media{min-height:300px;order:-1}
  .low-media::after{background:linear-gradient(180deg,transparent 55%,var(--navy-800) 100%)}
  .foot-top{grid-template-columns:1fr 1fr;gap:30px}
  .hero-arrows{display:none}
  .scroll-hint{display:none}
  .dots{bottom:30px}
  .badge-card{left:14px;bottom:14px}
}
@media(max-width:768px){
  .burger{display:flex}
  .menu{
    position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;
    background:rgba(9,26,52,.98);backdrop-filter:blur(16px);
    padding:12px 22px 20px;border-bottom:1px solid rgba(255,255,255,.1);
    display:none;box-shadow:0 24px 40px rgba(4,12,28,.4);
  }
  .nav.open .menu{display:flex}
  .nav.scrolled .menu{background:rgba(255,255,255,.98);border-bottom-color:var(--line)}
  .nav.scrolled .menu > a{color:var(--ink-700)}
  .nav.scrolled .menu > a:hover{background:var(--blue-50)}
  .menu > a{padding:13px 14px;font-size:15.5px}
  .menu > a.cta{margin:8px 0 0;text-align:center}
  .brand-text b{font-size:16.5px}
  .brand img{width:38px;height:38px}
  .vm-row{grid-template-columns:1fr}
  .low-items{grid-template-columns:1fr}
  .low-copy{padding:36px 26px}
  .f-row{grid-template-columns:1fr}
  .slide .acts .btn{padding:13px 22px;font-size:14px}
}
@media(max-width:520px){
  .wrap{padding:0 20px}
  .biz-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat b{font-size:34px}
  .foot-top{grid-template-columns:1fr}
  .sec-head h2{font-size:26px}
  .news-head h2{font-size:26px}
  .form-card{padding:28px 22px}
}

/* ============================================================
   二级页面：页头 / 面包屑
   ============================================================ */
.page-head{
  position:relative;color:#fff;overflow:hidden;
  padding:calc(var(--nav-h) + 58px) 0 58px;
  background:linear-gradient(118deg,var(--navy-950) 0%,var(--navy-800) 58%,var(--navy-700) 100%);
}
.page-head::before{content:"";position:absolute;inset:0;opacity:.4;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(circle at 80% 20%,#000,transparent 70%);
          mask-image:radial-gradient(circle at 80% 20%,#000,transparent 70%);}
.page-head .inner{position:relative;max-width:var(--maxw);margin:0 auto;padding:0 28px}
.crumb{display:flex;align-items:center;gap:9px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:16px}
.crumb a{transition:color .2s}
.crumb a:hover{color:#9CC8FF}
.crumb span{opacity:.5}
.page-head h1{font-size:clamp(28px,3.6vw,40px);font-weight:800;letter-spacing:-.3px;line-height:1.3}
.page-head .lead{margin-top:12px;color:rgba(255,255,255,.72);font-size:15.5px;max-width:680px}
.page-head .meta-row{display:flex;flex-wrap:wrap;gap:24px;align-items:center;margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.62)}
.page-head .meta-row .tag{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:1px;color:#fff;
  background:rgba(30,94,219,.9);padding:5px 14px;border-radius:999px;
}

/* 当前页导航高亮 */
.menu > a.active{background:rgba(255,255,255,.14);font-weight:700}
.nav.scrolled .menu > a.active{background:var(--blue-50);color:var(--blue-600)}

/* ============================================================
   列表页：筛选 / 列表 / 分页
   ============================================================ */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:34px}
.filter-btn{
  padding:9px 20px;border-radius:999px;border:1.5px solid var(--line);background:#fff;
  font-size:14px;font-weight:600;color:var(--ink-500);transition:.25s;
}
.filter-btn:hover{border-color:var(--blue-500);color:var(--blue-600)}
.filter-btn.on{background:var(--blue-600);border-color:var(--blue-600);color:#fff;box-shadow:0 6px 16px rgba(30,94,219,.28)}

.list-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;font-size:13.5px;color:var(--ink-400)}
.list-head b{color:var(--ink-700)}

.news-list .item{
  display:grid;grid-template-columns:300px 1fr;gap:28px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:all .28s ease;margin-bottom:18px;
}
.news-list .item:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:transparent}
.news-list .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-tint)}
.news-list .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .7s ease}
.news-list .item:hover .thumb img{transform:scale(1.06)}
.news-list .thumb .cat{
  position:absolute;left:12px;top:12px;font-size:12px;font-weight:700;color:#fff;
  background:rgba(30,94,219,.88);padding:4px 12px;border-radius:999px;
}
.news-list .text{padding:22px 26px 22px 0;display:flex;flex-direction:column;justify-content:center}
.news-list .text time{font-size:12.5px;color:var(--ink-400);letter-spacing:1px}
.news-list .text h3{font-size:19px;font-weight:700;color:var(--ink-900);line-height:1.5;margin:9px 0 10px;transition:color .25s}
.news-list .item:hover .text h3{color:var(--blue-600)}
.news-list .text p{font-size:14px;color:var(--ink-500);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-list .text .more{margin-top:14px;display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:700;color:var(--blue-600)}

.pager{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:44px;flex-wrap:wrap}
.pager a,.pager span{
  min-width:40px;height:40px;padding:0 13px;display:grid;place-items:center;
  border-radius:10px;border:1.5px solid var(--line);background:#fff;
  font-size:14px;font-weight:600;color:var(--ink-500);transition:.25s;
}
.pager a:hover{border-color:var(--blue-500);color:var(--blue-600)}
.pager .on{background:var(--blue-600);border-color:var(--blue-600);color:#fff}
.pager .gap{border:0;background:transparent}

.empty-tip{display:none;text-align:center;padding:60px 20px;color:var(--ink-400);font-size:15px}
.empty-tip.show{display:block}

/* ============================================================
   内容页（文章详情）
   ============================================================ */
.article-hero{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--sh-md);margin-bottom:34px}
.article-hero img{width:100%;aspect-ratio:21/9;object-fit:cover}

/* 正文容器与全站统一宽度（--maxw）保持一致：
   老板要求详情页所有区块上下左右对齐——880px 的窄栏会让正文比
   页头文字、相关阅读卡片都窄一截，看起来“没对齐”。 */
.article-wrap{max-width:var(--maxw);margin:0 auto}
.article-body{font-size:16.5px;line-height:1.95;color:var(--ink-700)}
.article-body > p{margin-bottom:20px}
.article-body h2{
  font-size:24px;font-weight:800;color:var(--ink-900);line-height:1.4;
  margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--blue-600);
}
.article-body h3{font-size:19px;font-weight:700;color:var(--ink-900);margin:28px 0 12px}
.article-body ul,.article-body ol{margin:0 0 22px}
.article-body li{padding:6px 0 6px 22px;position:relative}
.article-body ul > li::before{content:"";position:absolute;left:2px;top:16px;width:7px;height:7px;border-radius:50%;background:var(--blue-400)}
.article-body strong{color:var(--ink-900);font-weight:700}
/* —— 后台编辑器(wangEditor)产出的内容规范化 ——
   版式必须和手工排版的静态页完全一致，所以这里下重手：
   正文里的图片一律与文字同宽、圆角居中；空段落不占位；
   链接用主题蓝。内联样式已在 site_builder._clean_content 里剥掉，
   这两道防线缺一不可，别删。 */
.article-body img{max-width:100%;height:auto;display:block;margin:26px auto;border-radius:14px;box-shadow:var(--sh-sm)}
.article-body p:empty{display:none}
.article-body a{color:var(--blue-600);font-weight:700}
.article-body a:hover{text-decoration:underline}
.article-body blockquote{
  margin:28px 0;padding:20px 26px;background:var(--blue-50);
  border-left:4px solid var(--blue-500);border-radius:0 12px 12px 0;
  color:var(--ink-700);font-size:15.5px;line-height:1.85;
}
.article-figure{margin:30px 0}
.article-figure img{width:100%;border-radius:14px}
.article-figure figcaption{text-align:center;font-size:13px;color:var(--ink-400);margin-top:10px;letter-spacing:.5px}
.figure-2{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:30px 0}
.figure-2 img{width:100%;border-radius:14px;aspect-ratio:4/3;object-fit:cover}
.figure-2 figcaption{grid-column:1/-1;text-align:center;font-size:13px;color:var(--ink-400);margin-top:2px;letter-spacing:.5px}

.article-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:40px;padding-top:26px;border-top:1px solid var(--line)}
.tag-chip{font-size:13px;padding:6px 15px;border-radius:999px;background:var(--blue-50);color:var(--blue-600);border:1px solid var(--blue-100);transition:.25s}
.tag-chip:hover{background:var(--blue-600);color:#fff}

.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px}
.article-nav a{padding:16px 22px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:14.5px;color:var(--ink-700);transition:.25s}
.article-nav a:hover{border-color:var(--blue-500);box-shadow:var(--sh-sm);color:var(--blue-600)}
.article-nav a b{display:block;font-size:12px;color:var(--ink-400);margin-bottom:5px;letter-spacing:1.5px}
.article-nav .next-link{text-align:right}

/* ============================================================
   解决方案：列表 / 详情
   ============================================================ */
.sol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.sol-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:all .3s ease;
}
.sol-card:hover{transform:translateY(-8px);box-shadow:var(--sh-md)}
.sol-card .thumb{aspect-ratio:16/9;overflow:hidden}
.sol-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .7s ease}
.sol-card:hover .thumb img{transform:scale(1.06)}
.sol-card .body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}
.sol-card .body .cat{font-size:12px;letter-spacing:1.6px;color:var(--ink-400);font-weight:600}
.sol-card .body h3{font-size:19px;font-weight:800;color:var(--ink-900);margin:8px 0 10px}
.sol-card .body p{font-size:14px;color:var(--ink-500);line-height:1.75;flex:1}
.sol-card .body .more{margin-top:16px;display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:700;color:var(--blue-600)}

.step-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:40px 0}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;transition:.28s}
.step:hover{transform:translateY(-5px);box-shadow:var(--sh-sm);border-color:var(--blue-100)}
.step .no{width:38px;height:38px;border-radius:11px;background:var(--blue-600);color:#fff;display:grid;place-items:center;font-weight:800;font-size:15px;margin-bottom:14px;box-shadow:0 6px 14px rgba(30,94,219,.28)}
.step b{display:block;font-size:16px;color:var(--ink-900);margin-bottom:6px}
.step span{font-size:13.5px;color:var(--ink-500);line-height:1.7}

.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center;margin:48px 0}
.feature-split.reverse .f-media{order:-1}
.f-media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--sh-md)}
.f-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.f-text h3{font-size:25px;font-weight:800;color:var(--ink-900);margin-bottom:14px;line-height:1.4}
.f-text p{font-size:15px;color:var(--ink-500);line-height:1.85;margin-bottom:16px}
.f-text ul{list-style:none}
.f-text li{font-size:14.5px;color:var(--ink-700);padding:7px 0 7px 26px;position:relative}
.f-text li::before{
  content:"";position:absolute;left:0;top:13px;width:15px;height:15px;border-radius:50%;
  background:var(--blue-50) url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231E5EDB' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center/11px no-repeat;
}

/* 二级页响应式补充 */
@media(max-width:1080px){
  .sol-grid{grid-template-columns:repeat(2,1fr)}
  .step-flow{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:920px){
  .news-list .item{grid-template-columns:1fr}
  .news-list .thumb{aspect-ratio:16/9}
  .news-list .text{padding:20px 22px 24px}
  .feature-split{grid-template-columns:1fr;gap:30px}
  .feature-split.reverse .f-media{order:0}
  .article-nav{grid-template-columns:1fr}
  .article-nav .next-link{text-align:left}
}
@media(max-width:768px){
  .page-head{padding:calc(var(--nav-h) + 40px) 0 40px}
  .sol-grid{grid-template-columns:1fr}
}
@media(max-width:520px){
  .step-flow{grid-template-columns:1fr}
  .figure-2{grid-template-columns:1fr}
  .article-hero img{aspect-ratio:16/9}
}

/* 尊重系统减动效 */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001s !important;transition-duration:.001s !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}