:root{
  --navy:#0A1A3F;        /* 元墨蓝 */
  --navy-2:#0d2350;
  --blue:#2563EB;        /* 科技蓝 */
  --cyan:#22D3EE;        /* 数据青 */
  --ink:#0b1220;
  --paper:#f6f8fc;
  --line:#e6ecf5;
  --txt:#1f2a44;
  --txt-2:#5a6b8c;
  --white:#ffffff;
  --radius:18px;
  --shadow:0 18px 50px -22px rgba(10,26,63,.35);
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  color:var(--txt);background:var(--white);line-height:1.65;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:96px 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--blue);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cyan);border-radius:2px}
h2.title{font-size:34px;line-height:1.25;font-weight:800;color:var(--navy);margin:14px 0 12px;letter-spacing:-.5px}
.lead{color:var(--txt-2);font-size:16px;max-width:680px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:999px;font-weight:700;font-size:15px;cursor:pointer;border:1px solid transparent;transition:.25s}
.btn-primary{background:linear-gradient(120deg,var(--blue),var(--cyan));color:#fff;box-shadow:0 12px 30px -10px rgba(37,99,235,.7)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{background:rgba(255,255,255,.2)}
.btn-outline{background:#fff;color:var(--navy);border-color:var(--line)}
.btn-outline:hover{border-color:var(--blue);color:var(--blue)}

/* NAV */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{height:38px;width:auto}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{font-size:15px;font-weight:600;color:var(--txt);position:relative;padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--cyan);transition:.25s}
.nav-links a:hover::after{width:100%}
.nav-links a.active::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:14px}
.menu-btn{display:none;background:none;border:0;font-size:26px;color:var(--navy);cursor:pointer}

/* 科技感动效层（粒子网络 + 图片缓慢推拉） */
.fx{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:2;mix-blend-mode:screen}
@keyframes kenburns{
  0%{transform:scale(1.06) translate(0,0)}
  100%{transform:scale(1.2) translate(-2%,-1.5%)}
}

/* HERO */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:url('../品牌资产/产品配图/hero.png') center/cover no-repeat;transform:scale(1.06);animation:kenburns 26s ease-in-out infinite alternate}
.hero-scrim{position:absolute;inset:0;z-index:1;background:linear-gradient(105deg,rgba(8,16,38,.92) 0%,rgba(8,16,38,.72) 42%,rgba(8,16,38,.32) 100%)}
.hero .wrap{position:relative;z-index:3;width:100%}
.hero h1{font-size:clamp(34px,5vw,60px);line-height:1.12;font-weight:900;letter-spacing:-1px;max-width:880px;text-shadow:0 2px 30px rgba(8,16,38,.5)}
.hero h1 .hl{background:linear-gradient(120deg,var(--cyan),#7dd3fc);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{margin:22px 0 30px;font-size:18px;color:#cfe0ff;max-width:620px;text-shadow:0 2px 20px rgba(8,16,38,.5)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-pill{display:flex;gap:10px;margin-top:42px;flex-wrap:wrap}
.pill{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);font-size:14px;font-weight:600;color:#eaf2ff}
.pill i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}

/* STATS */
.stats{background:var(--navy);color:#fff}
.stats .grid{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;text-align:center}
.stat .num{font-size:40px;font-weight:900;background:linear-gradient(120deg,#fff,var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lbl{margin-top:6px;font-size:14px;color:#9fb3d9}

/* CORE */
.core{background:var(--paper)}
.core-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:42px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:.3s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-6px);border-color:#cfe0ff}
.card .ic{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;font-size:26px;background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;margin-bottom:18px}
.card h3{font-size:20px;color:var(--navy);margin-bottom:10px}
.card p{color:var(--txt-2);font-size:14.5px}
.card.engine{grid-column:span 3;background:linear-gradient(120deg,var(--navy),#102a63);color:#fff;border:0}
.card.engine .ic{background:linear-gradient(135deg,var(--cyan),#38bdf8);color:var(--navy)}
.card.engine h3{color:#fff}
.card.engine p{color:#c7d6f5}
.card.span2{grid-column:span 2}

/* PRODUCTS — 整屏幻灯片 + 侧边导航点 */
.products{position:relative;padding:0;background:#fff}
.products .prod-intro{padding:96px 0 36px}
.prod-dots{position:fixed;right:26px;top:50%;transform:translateY(-50%);z-index:55;display:flex;flex-direction:column;gap:15px;opacity:0;pointer-events:none;transition:opacity .35s}
.prod-dots.show{opacity:1;pointer-events:auto}
.pdot{width:13px;height:13px;border-radius:50%;border:2px solid var(--blue);background:transparent;cursor:pointer;padding:0;position:relative;transition:.25s;flex:none}
.pdot.active{background:var(--blue);transform:scale(1.3);box-shadow:0 0 0 5px rgba(37,99,235,.16)}
.pdot::after{content:attr(data-name);position:absolute;right:24px;top:50%;transform:translateY(-50%);white-space:nowrap;background:var(--navy);color:#fff;font-size:12.5px;font-weight:600;padding:6px 11px;border-radius:8px;opacity:0;pointer-events:none;transition:.2s;box-shadow:var(--shadow)}
.pdot:hover::after{opacity:1}
.slide{height:92vh;position:relative;overflow:hidden;scroll-margin-top:72px;margin-bottom:8vh}
.prod-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.06);animation:kenburns 28s ease-in-out infinite alternate}
.slide.rev .prod-bg{animation-direction:alternate-reverse}
.prod-scrim{position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(8,16,38,.9) 0%,rgba(8,16,38,.62) 36%,rgba(8,16,38,.18) 68%,rgba(8,16,38,.08) 100%)}
.slide.rev .prod-scrim{background:linear-gradient(270deg,rgba(8,16,38,.9) 0%,rgba(8,16,38,.62) 36%,rgba(8,16,38,.18) 68%,rgba(8,16,38,.08) 100%)}
.slide .idx{position:absolute;right:3vw;bottom:5vh;font-size:clamp(120px,18vw,260px);font-weight:900;color:rgba(255,255,255,.07);line-height:.8;z-index:1;user-select:none;pointer-events:none}
.slide-content{position:relative;z-index:3;height:100%;display:flex;align-items:center}
.slide-content .wrap{display:flex;align-items:center}
.slide-text{max-width:545px}
.slide.rev .slide-text{margin-left:auto}
.slide-text .ptag{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:rgba(34,211,238,.16);color:#aef0ff;font-size:13px;font-weight:700;letter-spacing:.5px}
.slide-text .ptag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}
.slide-text h3{font-size:clamp(30px,3.6vw,48px);color:#fff;font-weight:900;margin:18px 0 16px;letter-spacing:-.5px;line-height:1.15;text-shadow:0 2px 30px rgba(8,16,38,.55)}
.slide-text p.desc{font-size:17px;color:#cdd9f2;line-height:1.8;text-shadow:0 1px 18px rgba(8,16,38,.5)}
.slide-text .chips{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}
.slide-text .chip{font-size:13.5px;padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.12);color:#dbe9ff;font-weight:600;border:1px solid rgba(255,255,255,.25);backdrop-filter:blur(2px)}
.slide-text .more{display:inline-flex;align-items:center;gap:6px;margin-top:28px;color:var(--cyan);font-weight:700;font-size:15px}
.slide-text .more:hover{color:#7dd3fc}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:12.5px;padding:5px 11px;border-radius:999px;background:#eef4ff;color:var(--blue);font-weight:600;border:1px solid #dbe7ff}

/* ALGO */
.algo{background:var(--navy);color:#fff}
.algo .eyebrow{color:var(--cyan)}
.algo h2.title{color:#fff}
.algo .lead{color:#a9bbdd}
.algo-tabs{display:flex;gap:10px;flex-wrap:wrap;margin:28px 0 8px}
.algo-tab{padding:9px 16px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:#dce7fb;font-size:14px;font-weight:600;cursor:pointer;transition:.2s}
.algo-tab:hover{background:rgba(34,211,238,.18);border-color:var(--cyan)}
.algo-tree{margin-top:22px;display:grid;gap:12px}
.algo-cat{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:14px;overflow:hidden}
.algo-cat-head{width:100%;display:flex;align-items:center;gap:14px;padding:18px 20px;background:none;border:0;color:#fff;cursor:pointer;text-align:left;font-size:16px;font-weight:700}
.algo-cat-head .dot{width:10px;height:10px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan);flex:none}
.algo-cat-name{flex:1}
.algo-cat-count{font-size:13px;color:#9fb3d9;font-weight:600}
.algo-cat-head .chev{transition:.3s;color:#9fb3d9;font-size:20px}
.algo-cat.open .algo-cat-head .chev{transform:rotate(90deg)}
.algo-cat-body{max-height:0;overflow:hidden;transition:max-height .4s ease}
.algo-cat.open .algo-cat-body{max-height:2000px}
.algo-l1{border-top:1px solid rgba(255,255,255,.08)}
.algo-l1-head{width:100%;display:flex;align-items:center;gap:10px;padding:13px 20px 13px 44px;background:none;border:0;color:#e6eefc;cursor:pointer;text-align:left;font-size:15px;font-weight:600}
.algo-l1-head .algo-l1-count{margin-left:auto;font-size:12px;color:#8fa6cf;background:rgba(34,211,238,.15);padding:2px 9px;border-radius:999px}
.algo-l1-head .chev{transition:.3s;color:#8fa6cf}
.algo-l1.open .algo-l1-head .chev{transform:rotate(90deg)}
.algo-l1-body{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 44px 16px}
.algo-l1.open .algo-l1-body{max-height:900px}
.algo-item{display:inline-block;margin:5px 6px 0 0;padding:5px 12px;border-radius:8px;background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.25);color:#d7f3fb;font-size:13px}

/* INDUSTRIES */
.ind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:42px}
.ind{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;transition:.3s}
.ind:hover{border-color:var(--blue);transform:translateY(-4px)}
.ind .em{font-size:24px}
.ind h4{margin:10px 0 6px;color:var(--navy);font-size:17px}
.ind p{color:var(--txt-2);font-size:13.5px}

/* LLM */
.llm{background:linear-gradient(160deg,#0a1a3f,#102a63);color:#fff}
.llm .eyebrow{color:var(--cyan)}
.llm h2.title{color:#fff}
.llm .lead{color:#a9bbdd}
.llm-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:42px}
.llm-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:24px;transition:.3s}
.llm-card:hover{border-color:var(--cyan);transform:translateY(-4px)}
.llm-card h4{color:#fff;font-size:18px;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.llm-card h4 .n{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--cyan),#38bdf8);color:var(--navy);display:grid;place-items:center;font-size:14px;font-weight:800;flex:none}
.llm-card p{color:#c2d2f0;font-size:14px}

/* ABOUT */
.about{background:var(--paper)}
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center;margin-top:42px}
.about-img{height:420px;border-radius:22px;background:url('../品牌资产/产品配图/about.png') center/cover no-repeat;box-shadow:var(--shadow)}
.about h2.title{margin-top:0}
.adv{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:24px 0}
.adv .a{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;text-align:center}
.adv .a .em{font-size:26px}
.adv .a b{display:block;color:var(--navy);margin-top:6px;font-size:15px}
.adv .a span{font-size:12.5px;color:var(--txt-2)}
.biz{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;margin-top:8px}
.biz h4{color:var(--navy);margin-bottom:12px;font-size:16px}
.biz dl{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;font-size:14px}
.biz dt{color:var(--txt-2);white-space:nowrap}
.biz dd{color:var(--txt);font-weight:600}
.mission{margin-top:18px;font-size:15px;color:var(--txt-2);background:#fff;border-left:4px solid var(--cyan);padding:16px 18px;border-radius:0 12px 12px 0}

/* CONTACT */
.contact{background:var(--navy);color:#fff}
.contact .eyebrow{color:var(--cyan)}
.contact h2.title{color:#fff}
.contact .lead{color:#a9bbdd}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;margin-top:42px}
.c-info .row{display:flex;align-items:flex-start;gap:14px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.c-info .row .ic{width:42px;height:42px;border-radius:12px;background:rgba(34,211,238,.15);display:grid;place-items:center;font-size:20px;flex:none}
.c-info .row b{display:block;font-size:15px;color:#fff}
.c-info .row span{font-size:14px;color:#a9bbdd}
.c-info .row a{color:var(--cyan)}
.qr{background:#fff;border-radius:18px;padding:24px;text-align:center;color:var(--navy)}
.qr img{width:200px;height:200px;object-fit:cover;margin:0 auto 12px;border-radius:12px}
.qr .cap{font-size:14px;font-weight:600;color:var(--navy)}
.qr .sub{font-size:12.5px;color:var(--txt-2);margin-top:4px}
.form-note{font-size:12.5px;color:var(--txt-2);margin-top:10px}

/* WECHAT / WHY */
.wechat-card{position:relative}
.qr-tip{font-size:12px;color:var(--blue);background:#eef4ff;padding:8px 12px;border-radius:8px;margin-top:12px;line-height:1.4}
.why-box{background:#fff;border-radius:18px;padding:22px;color:var(--txt);border:1px solid var(--line)}
.why-box h4{color:var(--navy);margin-bottom:12px;font-size:16px}
.why-box ul{list-style:none}
.why-box li{position:relative;padding-left:20px;margin:8px 0;font-size:14px;color:var(--txt-2)}
.why-box li::before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:800}

/* 需求登记表卡片（飞书问卷 QR） */
.reg-card{background:#fff;border-radius:18px;padding:30px;text-align:center;color:var(--navy)}
.reg-card img{width:230px;height:230px;object-fit:cover;margin:0 auto 16px;border-radius:14px}
.reg-card .cap{font-size:17px;font-weight:800;color:var(--navy)}
.reg-card .sub{margin-top:6px;font-size:13.5px;color:var(--txt-2)}
.reg-card .btn{width:100%;justify-content:center;margin-top:18px}

/* FOOTER */
footer{background:#060f24;color:#9fb3d9;padding:54px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px}
footer .brand img{height:34px;filter:brightness(0) invert(1)}
footer h5{color:#fff;font-size:15px;margin-bottom:14px}
footer ul{list-style:none}
footer ul li{margin:8px 0;font-size:14px}
footer ul li a:hover{color:var(--cyan)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.foot-bottom a{color:var(--cyan)}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* 子页通用区块 */
.page-hero{position:relative;min-height:46vh;display:flex;align-items:center;color:#fff;overflow:hidden;background:linear-gradient(120deg,var(--navy),#102a63)}
.page-hero .fx{opacity:.5}
.page-hero .wrap{position:relative;z-index:3}
.page-hero h1{font-size:clamp(30px,4.4vw,52px);font-weight:900;letter-spacing:-1px;text-shadow:0 2px 30px rgba(8,16,38,.5)}
.page-hero p{margin-top:16px;font-size:17px;color:#cfe0ff;max-width:680px}
.prod-list{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:42px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.3s;display:flex;flex-direction:column}
.pcard:hover{transform:translateY(-6px);border-color:#cfe0ff}
.pcard .pic{height:200px;background-size:cover;background-position:center;position:relative}
.pcard .pic .tag{position:absolute;left:16px;top:16px;padding:6px 14px;border-radius:999px;background:rgba(34,211,238,.18);color:#aef0ff;font-size:12.5px;font-weight:700;backdrop-filter:blur(2px)}
.pcard .body{padding:22px 24px 26px}
.pcard h3{font-size:21px;color:var(--navy);margin-bottom:10px}
.pcard p{color:var(--txt-2);font-size:14.5px;line-height:1.7}
.pcard .chips{margin-top:16px}
.sol-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:42px}
.sol{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;transition:.3s}
.sol:hover{transform:translateY(-4px);border-color:var(--blue)}
.sol .em{font-size:28px}
.sol h3{margin:10px 0 8px;color:var(--navy);font-size:20px}
.sol p{color:var(--txt-2);font-size:14.5px;line-height:1.7}
.sol .kv{margin-top:14px;font-size:13.5px;color:var(--blue);font-weight:600}
.breadcrumb{padding:18px 0 0;font-size:13.5px;color:var(--txt-2)}
.breadcrumb a{color:var(--blue)}
.breadcrumb a:hover{text-decoration:underline}

@media(max-width:980px){
  .stats .grid{grid-template-columns:repeat(2,1fr);gap:30px}
  .core-grid{grid-template-columns:1fr}
  .card.engine,.card.span2{grid-column:span 1}
  .ind-grid{grid-template-columns:repeat(2,1fr)}
  .slide{height:auto;min-height:92vh;margin-bottom:8vh}
  .slide-content{align-items:flex-end;padding-bottom:72px}
  .slide.rev .slide-text{margin-left:0}
  .slide .prod-scrim{background:linear-gradient(0deg,rgba(8,16,38,.94) 0%,rgba(8,16,38,.55) 42%,rgba(8,16,38,.15) 100%)}
  .slide.rev .prod-scrim{background:linear-gradient(0deg,rgba(8,16,38,.94) 0%,rgba(8,16,38,.55) 42%,rgba(8,16,38,.15) 100%)}
  .prod-dots{display:none}
  .llm-grid{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .prod-list,.sol-list{grid-template-columns:1fr}
}
@media(max-width:680px){
  section{padding:64px 0}
  .nav-links{position:fixed;inset:72px 0 auto 0;background:#fff;flex-direction:column;padding:18px 24px;gap:14px;box-shadow:var(--shadow);transform:translateY(-120%);transition:.3s;border-bottom:1px solid var(--line)}
  .nav-links.open{transform:none}
  .menu-btn{display:block}
  .ind-grid{grid-template-columns:1fr}
  .hero h1{font-size:32px}
}