:root{
  --blue:#0a8fe0;
  --blue-deep:#0b6fb8;
  --cyan:#18b1f0;
  --ink:#16324a;
  --gray:#6b7f90;
  --gray-light:#94a6b4;
  --bg:#ffffff;
  --bg-soft:#f4f9fc;
  --line:#dce8f0;
  --grad:linear-gradient(135deg,#18b1f0 0%,#0a8fe0 55%,#0b6fb8 100%);
  --shadow:0 10px 40px rgba(10,143,224,.12);
  --radius:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- Nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:42px;width:auto}
.brand-name{font-size:19px;font-weight:700;letter-spacing:1px}
.brand-name b{color:#000}
.brand-sub{font-size:11px;color:var(--gray-light);letter-spacing:2px;display:block;margin-top:-3px}
.nav-links{display:flex;gap:34px;font-size:15px;color:var(--gray)}
.nav-links a{position:relative;padding:6px 0;transition:color .2s}
.nav-links a:hover{color:var(--blue)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--grad);border-radius:2px;transition:width .25s}
.nav-links a:hover::after{width:100%}
.nav-cta{background:var(--grad);color:#fff;padding:9px 22px;border-radius:999px;font-size:14px;font-weight:600;box-shadow:0 4px 14px rgba(10,143,224,.35);transition:transform .2s}
.nav-cta:hover{transform:translateY(-2px)}
/* ---------- 合作咨询弹窗 ---------- */
.modal-mask{position:fixed;inset:0;background:rgba(4,10,22,.68);backdrop-filter:blur(5px);display:none;align-items:center;justify-content:center;z-index:300;padding:20px}
.modal-mask.on{display:flex;animation:maskIn .25s ease}
@keyframes maskIn{from{opacity:0}to{opacity:1}}
.modal{width:430px;max-width:100%;background:linear-gradient(170deg,#141e33,#0b1424);border:1px solid rgba(120,170,255,.18);border-radius:20px;padding:34px 30px 26px;position:relative;color:#fff;box-shadow:0 30px 80px rgba(0,10,30,.6);animation:popIn .3s ease}
@keyframes popIn{from{opacity:0;transform:translateY(18px) scale(.97)}to{opacity:1;transform:none}}
.modal-close{position:absolute;top:14px;right:16px;width:34px;height:34px;border:none;background:rgba(255,255,255,.08);border-radius:50%;color:#cdd9ec;font-size:15px;cursor:pointer;transition:background .2s}
.modal-close:hover{background:rgba(255,255,255,.18)}
.modal-ic{width:66px;height:66px;margin:0 auto 18px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#1d3a63,#0e2038);border:1px solid rgba(90,170,255,.35);display:flex;align-items:center;justify-content:center;box-shadow:0 0 26px rgba(40,120,255,.3)}
.modal-ic svg{width:28px;height:28px;stroke:#4fd0ff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;filter:drop-shadow(0 0 6px rgba(79,208,255,.6))}
.modal h3{font-size:25px;font-weight:800;letter-spacing:1px}
.modal .sub{color:#93a7c4;font-size:14px;margin:6px 0 20px}
.mc-list{display:grid;gap:12px;margin-bottom:14px}
.mc-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:16px 14px;text-align:center;transition:border-color .2s}
.mc-card:hover{border-color:rgba(79,208,255,.4)}
.mc-card .who{display:flex;align-items:center;justify-content:center;gap:7px;font-size:16px;font-weight:700;color:#eaf2ff}
.mc-card .who svg{width:17px;height:17px;stroke:#4fd0ff;fill:none;stroke-width:2;stroke-linecap:round}
.mc-card .tel{display:block;font-size:26px;font-weight:800;background:linear-gradient(90deg,#57c2ff,#3f7bff);-webkit-background-clip:text;background-clip:text;color:transparent;margin:8px 0 2px;letter-spacing:1px;text-decoration:none}
.mc-card .wt{font-size:12px;color:#8ba0bf}
.mc-btns{display:grid;gap:10px}
.mc-call{display:flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(90deg,#39c2ff,#3f6bff);color:#fff;border:none;border-radius:12px;padding:13px;font-size:16px;font-weight:700;width:100%;cursor:pointer;text-decoration:none;transition:filter .2s,transform .2s}
.mc-call:hover{filter:brightness(1.08);transform:translateY(-1px)}
.mc-call svg{width:17px;height:17px;stroke:#fff;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.mc-later{display:flex;align-items:center;justify-content:center;gap:8px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);color:#c3d2e8;border:none;border-radius:12px;padding:12px;font-size:14px;width:100%;cursor:pointer;transition:background .2s}
.mc-later:hover{background:rgba(255,255,255,.12)}
.modal .mfoot{text-align:center;color:#7d92b3;font-size:13px;margin-top:16px;line-height:1.7}
.modal .mfoot b{color:#a9bdd9;font-weight:600}
/* ---------- 合作伙伴 ---------- */
.partner-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}
.partner{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 8px 12px;text-align:center;font-weight:800;font-size:15px;color:var(--ink);display:flex;flex-direction:column;gap:2px;transition:transform .2s,box-shadow .2s}
.partner:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.partner span{font-size:10px;color:var(--gray);font-weight:600;letter-spacing:1.5px}

/* ---------- Hero ---------- */
.hero{padding:150px 0 70px;background:
  radial-gradient(900px 420px at 85% 10%,rgba(24,177,240,.12),transparent 60%),
  radial-gradient(700px 400px at 10% 90%,rgba(10,143,224,.08),transparent 60%),
  linear-gradient(180deg,#f7fbfe 0%,#ffffff 100%)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;border:1px solid #bfe3f7;background:#eff8fe;color:var(--blue-deep);font-size:13px;padding:6px 16px;border-radius:999px;margin-bottom:22px}
.hero-tag i{width:8px;height:8px;border-radius:50%;background:var(--cyan);display:inline-block;animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:44px;line-height:1.25;font-weight:800;letter-spacing:1px}
.hero h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{margin:18px 0 26px;font-size:17px;color:var(--gray);max-width:520px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 30px;border-radius:999px;font-size:15px;font-weight:600;transition:transform .2s,box-shadow .2s}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 20px rgba(10,143,224,.35)}
.btn-ghost{border:1.5px solid var(--blue);color:var(--blue-deep)}
.btn:hover{transform:translateY(-2px)}
.hero-robot{position:relative}
.hero-carousel{position:relative;background:none}
.hero-carousel .slide{display:none;width:100%;height:auto;border-radius:26px;box-shadow:0 26px 60px rgba(11,111,184,.15)}
.hero-carousel .slide.on{display:block;animation:fadeSlide .7s ease}
/* 首帧白底产品图：无边框、放大溢出、与页面背景自然融合 */
.hero-carousel .slide[src*="robot-hero"]{width:118%;max-width:none;margin:-7% 0 -7% -9%;border-radius:0;box-shadow:none;mix-blend-mode:multiply}
@keyframes fadeSlide{from{opacity:.25;transform:scale(1.015)}to{opacity:1;transform:scale(1)}}
.slide-cap{position:absolute;left:16px;bottom:16px;background:rgba(10,20,38,.72);backdrop-filter:blur(6px);color:#fff;font-size:12.5px;padding:7px 14px;border-radius:999px;letter-spacing:.5px;pointer-events:none}
.slide-cap b{color:#7cc4ff;font-weight:600;margin-right:6px}
.hero-dots{position:absolute;right:16px;bottom:20px;display:flex;gap:7px;background:rgba(10,20,38,.35);backdrop-filter:blur(4px);padding:7px 11px;border-radius:999px}
.hero-dots i{width:24px;height:4px;border-radius:4px;background:rgba(255,255,255,.5);cursor:pointer;transition:background .25s,width .25s}
.hero-dots i.on{background:#fff;width:32px}
/* 浮动标签改为图片下方静态排布，不遮挡画面 */
.hero-chips{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}
.hero-chip{flex:1;min-width:180px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:10px 14px;font-size:12px;color:var(--gray)}
.hero-chip b{display:block;font-size:14.5px;color:var(--ink)}

/* ---------- Payload ---------- */
.payload{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:26px}
.pl-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 18px;text-align:center;transition:transform .25s,box-shadow .25s}
.pl-item:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.pl-item .pi{width:44px;height:44px;margin:0 auto 12px;border-radius:12px;background:linear-gradient(135deg,#eaf5ff,#dbeefc);display:flex;align-items:center;justify-content:center}
.pl-item .pi svg{width:23px;height:23px;fill:none;stroke:var(--blue);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.pl-item b{display:block;font-size:14.5px;margin-bottom:6px}
.pl-item span{font-size:12.5px;color:var(--gray);line-height:1.6}
@media(max-width:900px){.payload{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.payload{grid-template-columns:1fr}}

/* ---------- Brain Platform ---------- */
#brain{background:var(--bg-soft)}
.brain-feats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:50px}
.brain-feat{position:relative;overflow:hidden;background:linear-gradient(165deg,#0d1e38 0%,#10294a 55%,#0c1c33 100%);border:1px solid rgba(64,156,255,.28);border-radius:14px;padding:24px 22px 20px;transition:transform .25s,box-shadow .25s,border-color .25s}
.brain-feat::before{content:"";position:absolute;top:-46px;right:-46px;width:130px;height:130px;border-radius:50%;background:radial-gradient(circle,rgba(24,177,240,.22),transparent 68%);pointer-events:none}
.brain-feat::after{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,rgba(79,208,255,.85),transparent);opacity:.7}
.brain-feat:hover{transform:translateY(-5px);box-shadow:0 18px 44px rgba(8,40,80,.5);border-color:rgba(79,208,255,.55)}
.brain-feat .fi{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,rgba(24,177,240,.24),rgba(24,177,240,.07));border:1px solid rgba(79,208,255,.5);box-shadow:0 0 16px rgba(24,177,240,.28),inset 0 0 10px rgba(24,177,240,.15);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.brain-feat .fi svg{width:23px;height:23px;fill:none;stroke:#4fd0ff;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;filter:drop-shadow(0 0 5px rgba(79,208,255,.75))}
.brain-feat h3{font-size:16.5px;font-weight:700;margin-bottom:8px;color:#f2f8ff}
.brain-feat h3 em{font-style:normal;font-size:11px;color:#5fc6ff;background:rgba(24,177,240,.16);border:1px solid rgba(79,208,255,.35);border-radius:999px;padding:2px 9px;margin-left:8px;font-weight:600;vertical-align:2px}
.brain-feat p{font-size:13.5px;color:#a9c3de;line-height:1.75}
.shots{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.shot{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 10px 30px rgba(15,60,110,.08);transition:transform .25s,box-shadow .25s}
.shot:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.shot-bar{display:flex;align-items:center;gap:6px;padding:10px 14px;background:#f7fafd;border-bottom:1px solid var(--line)}
.shot-bar i{width:9px;height:9px;border-radius:50%}
.shot-bar i:nth-child(1){background:#ff5f57}.shot-bar i:nth-child(2){background:#febc2e}.shot-bar i:nth-child(3){background:#28c840}
.shot-bar span{margin-left:8px;font-size:12px;color:var(--gray);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.shot img{width:100%;display:block}
.shot-cap{padding:12px 16px 13px;border-top:1px solid var(--line);font-size:13px;color:var(--gray);line-height:1.6}
.shot-cap b{color:var(--ink);font-size:14px;display:block;margin-bottom:2px}
@media(max-width:900px){.brain-feats{grid-template-columns:1fr 1fr}.shots{grid-template-columns:1fr}}
@media(max-width:600px){.brain-feats{grid-template-columns:1fr}}

/* ---------- Sections ---------- */
section{padding:84px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 52px}
.sec-head .kicker{display:inline-block;font-size:13px;letter-spacing:4px;color:var(--blue);font-weight:600;margin-bottom:10px}
.sec-head h2{font-size:32px;font-weight:800;letter-spacing:1px}
.sec-head p{color:var(--gray);margin-top:12px;font-size:15.5px}
.sec-head .bar{width:52px;height:4px;border-radius:4px;background:var(--grad);margin:18px auto 0}

/* ---------- Products ---------- */
#products{background:var(--bg-soft)}
.prod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.prod-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.prod-card.flagship{grid-column:1/-1;display:grid;grid-template-columns:1fr 1.1fr;gap:34px;align-items:center}
.prod-visual{background:linear-gradient(160deg,#f2f9fe,#e8f4fb);border-radius:12px;padding:14px}
.prod-visual img{width:100%;height:auto;border-radius:10px;display:block}
.prod-visual .prod-sub{margin-top:12px}
.prod-sub-cap{margin-top:8px;font-size:12px;color:var(--gray);text-align:center;letter-spacing:.5px}
.prod-kicker{font-size:12px;letter-spacing:3px;color:var(--cyan);font-weight:700;margin-bottom:6px}
.prod-card h3{font-size:22px;font-weight:800}
.prod-card h3 em{font-style:normal;font-size:13px;color:var(--gray-light);font-weight:500;margin-left:8px}
.prod-card>p{color:var(--gray);font-size:14.5px;margin:12px 0 16px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{border:1px solid #bfe0f5;color:var(--blue-deep);background:#f2f9fe;border-radius:999px;padding:4px 14px;font-size:12.5px}
.spec-table{margin-top:18px;border-top:1px dashed var(--line)}
.spec-table li{display:flex;justify-content:space-between;padding:9px 2px;border-bottom:1px dashed var(--line);font-size:13.5px}
.spec-table li span:first-child{color:var(--gray-light)}
.spec-table li span:last-child{font-weight:600;color:var(--ink)}

/* ---------- Scenarios ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene{background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:transform .25s,box-shadow .25s;position:relative;overflow:hidden}
.scene::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);opacity:0;transition:opacity .25s;z-index:2}
.scene:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.scene:hover::before{opacity:1}
.scene-img{height:172px;overflow:hidden}
.scene-img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .45s ease}
.scene:hover .scene-img img{transform:scale(1.06)}
.scene-body{padding:22px 26px 26px}
.scene-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(150deg,#eaf6fd,#d9eefb);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.scene-icon svg{width:30px;height:30px;stroke:var(--blue-deep);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.scene h3{font-size:18px;font-weight:700;margin-bottom:4px}
.scene h4{font-size:12.5px;color:var(--cyan);font-weight:600;letter-spacing:1px;margin-bottom:10px}
.scene p{font-size:14px;color:var(--gray)}
.scene .feat{margin-top:14px;display:flex;flex-wrap:wrap;gap:6px}
.scene .feat span{font-size:11.5px;color:var(--gray-light);border:1px solid var(--line);border-radius:999px;padding:2px 10px}

/* ---------- Tech ---------- */
#tech{background:linear-gradient(180deg,#0d2b45 0%,#0a2238 100%);color:#fff}
#tech .sec-head h2{color:#fff}
#tech .sec-head p{color:#9db8cc}
#tech .sec-head .kicker{color:var(--cyan)}
.tech-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.tech{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:28px 24px;transition:background .25s,transform .25s}
.tech:hover{background:rgba(24,177,240,.12);transform:translateY(-5px)}
.tech-icon{width:52px;height:52px;border-radius:13px;background:rgba(24,177,240,.15);border:1px solid rgba(24,177,240,.35);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.tech-icon svg{width:26px;height:26px;stroke:var(--cyan);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tech h3{font-size:17px;font-weight:700;margin-bottom:8px}
.tech p{font-size:13.5px;color:#9db8cc}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.about-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.about-brand img{height:44px;width:auto}
.about-brand .ab-cn{font-size:20px;font-weight:800;letter-spacing:.5px;color:#000;line-height:1.25}
.about-brand .ab-en{font-size:10.5px;color:var(--gray-light);letter-spacing:2px;line-height:1.25;margin-top:1px}
.about h3{font-size:24px;font-weight:800;margin-bottom:14px}
.about p{color:var(--gray);font-size:15px;margin-bottom:12px}
.about-points{margin-top:20px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.point{display:flex;gap:12px;align-items:flex-start}
.point svg{flex:none;width:22px;height:22px;stroke:var(--blue);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;margin-top:3px}
.point b{font-size:14.5px;display:block}
.point span{font-size:12.5px;color:var(--gray-light)}
.about-card{background:linear-gradient(160deg,#f2f9fe,#e6f3fb);border:1px solid var(--line);border-radius:var(--radius);padding:34px}
.about-card h4{font-size:16px;font-weight:700;color:var(--blue-deep);margin-bottom:16px;display:flex;align-items:center;gap:10px}
.about-card h4::before{content:"";width:4px;height:18px;border-radius:4px;background:var(--grad)}
.about-card li{display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px dashed #c8e2f2;font-size:14px}
.about-card li:last-child{border-bottom:none}
.about-card li span:first-child{color:var(--gray)}
.about-card li span:last-child{font-weight:600}

/* ---------- Contact ---------- */
#contact{background:var(--bg-soft)}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;text-align:center;transition:transform .25s,box-shadow .25s}
.contact-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.contact-card .ic{width:54px;height:54px;margin:0 auto 16px;border-radius:14px;background:var(--grad);display:flex;align-items:center;justify-content:center}
.contact-card .ic svg{width:26px;height:26px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.contact-card b{font-size:16px}
.contact-card p{font-size:14px;color:var(--gray);margin-top:6px}

/* ---------- Footer ---------- */
footer{background:#0d2b45;color:#8fa9bd;padding:52px 0 28px;font-size:13.5px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:44px;margin-bottom:36px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.foot-brand img{height:36px}
.foot-brand b{color:#fff;font-size:17px}
footer h5{color:#fff;font-size:14.5px;margin-bottom:14px}
footer li{margin-bottom:9px}
footer a:hover{color:var(--cyan)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;color:#6d8aa0;font-size:12.5px}
.foot-bottom a{color:#6d8aa0;border-bottom:1px solid rgba(109,138,160,.45);padding-bottom:1px;transition:color .2s,border-color .2s}
.foot-bottom a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

/* ---------- FAQ（SEO 内容区） ---------- */
.faq-list{max-width:980px;margin:34px auto 0;display:grid;gap:12px}
.qa{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 22px;transition:border-color .2s,box-shadow .2s}
.qa[open]{border-color:#bfe0f5;box-shadow:0 10px 28px rgba(10,143,224,.09)}
.qa summary{list-style:none;cursor:pointer;padding:18px 0;font-size:16.5px;font-weight:700;color:var(--ink);display:flex;gap:12px;align-items:flex-start}
.qa summary::-webkit-details-marker{display:none}
.qa summary::before{content:"Q";flex:none;width:22px;height:22px;border-radius:7px;background:var(--grad);color:#fff;font-size:12.5px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:2px}
.qa summary::after{content:"+";margin-left:auto;color:var(--blue);font-weight:800;font-size:18px;line-height:1}
.qa[open] summary::after{content:"-"}
.qa .ans{padding:0 0 20px 34px;color:var(--gray);font-size:14.5px;line-height:1.9}
.qa .ans b{color:var(--ink)}
.faq-note{margin-top:26px;text-align:center;color:var(--gray-light);font-size:13.5px}
/* ---------- 页脚关键词云 ---------- */
.foot-kw{margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1)}
.foot-kw h5{color:#fff;font-size:14.5px;margin-bottom:14px}
.kw-cloud{display:flex;flex-wrap:wrap;gap:8px}
.kw-cloud a{font-size:12.5px;color:#8fa8bd;border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:4px 11px;transition:color .2s,border-color .2s,background .2s}
.kw-cloud a:hover{color:#fff;border-color:rgba(79,208,255,.5);background:rgba(79,208,255,.08)}
/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.on{opacity:1;transform:none}

@media (max-width:960px){
  .hero-grid,.prod-card.flagship,.about-grid{grid-template-columns:1fr}
  .prod-grid{grid-template-columns:1fr}
  .scene-grid,.contact-grid{grid-template-columns:repeat(2,1fr)}
  .tech-grid{grid-template-columns:repeat(2,1fr)}
  .nav-links{display:none}
  .hero h1{font-size:32px}
  section{padding:60px 0}
}
@media (max-width:560px){
  .scene-grid,.contact-grid{grid-template-columns:1fr}
}

/* ========== 内页样式（build v2） ========== */
.more-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;color:var(--blue);border-bottom:1px solid transparent;transition:border-color .2s}
.more-link:hover{border-bottom-color:var(--blue)}
.faq-more{margin-top:14px;text-align:center}
.prod-link{display:inline-flex;align-items:center;gap:8px;margin-top:20px;padding:12px 26px;border-radius:999px;background:var(--grad);color:#fff;font-size:14.5px;font-weight:700;box-shadow:0 8px 20px rgba(10,143,224,.22);transition:transform .2s,box-shadow .2s}
.prod-link:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(10,143,224,.3)}
.scene h3 a,.scene h4 a{color:inherit;text-decoration:none}
.scene h3 a:hover{color:var(--blue)}
.scene-img a{display:block;height:100%}
.scene-img img{transition:transform .5s}
.scene:hover .scene-img img{transform:scale(1.05)}

/* 面包屑 */
.crumb{padding:104px 0 0;font-size:13px;color:var(--gray-light)}
.crumb a{color:var(--gray);transition:color .2s}
.crumb a:hover{color:var(--blue)}
.crumb i{font-style:normal;margin:0 9px;color:#c3d3df}

/* 内页页头 */
.page-head{padding:20px 0 44px}
.page-head .kicker{margin-bottom:16px}
.page-head h1{font-size:40px;line-height:1.28;font-weight:800;letter-spacing:-.5px;max-width:1000px}
.page-head h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-head .lead{margin-top:20px;font-size:16px;color:var(--gray);max-width:940px;line-height:2}
.page-head .tags{margin-top:24px}

/* 内页分区 */
.page-sec{padding:56px 0;border-top:1px solid var(--line)}
.page-sec:first-of-type{border-top:0}
.page-sec h2{font-size:27px;font-weight:800;margin-bottom:10px;letter-spacing:-.3px}
.page-sec .sub{color:var(--gray);font-size:15px;margin-bottom:32px;max-width:860px;line-height:1.9}

/* 痛点卡片 */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.pain{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 24px;transition:border-color .2s,box-shadow .2s}
.pain:hover{border-color:#bfe0f5;box-shadow:0 12px 30px rgba(10,143,224,.08)}
.pain b{display:block;font-size:16px;margin-bottom:9px}
.pain b::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--grad);margin-right:9px;vertical-align:middle}
.pain p{color:var(--gray);font-size:14px;line-height:1.9}

/* 方案构成 */
.plan-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.plan{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;position:relative;transition:border-color .2s,box-shadow .2s}
.plan:hover{border-color:#bfe0f5;box-shadow:0 12px 30px rgba(10,143,224,.08)}
.plan .no{position:absolute;top:16px;right:20px;font-size:26px;font-weight:800;color:#e9f4fc;line-height:1}
.plan b{display:block;font-size:15.5px;margin-bottom:9px;padding-right:30px}
.plan p{color:var(--gray);font-size:13.5px;line-height:1.85}

/* 成效数据 */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.kpi{background:linear-gradient(180deg,#f5fafe,#fff);border:1px solid var(--line);border-radius:14px;padding:26px 20px;text-align:center}
.kpi b{display:block;font-size:31px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2}
.kpi span{display:block;margin-top:9px;color:var(--gray);font-size:13.5px;line-height:1.7}

/* 相关内链卡片 */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rel{display:block;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 24px;transition:border-color .2s,box-shadow .2s,transform .2s}
.rel:hover{border-color:#bfe0f5;box-shadow:0 14px 32px rgba(10,143,224,.1);transform:translateY(-3px)}
.rel b{display:block;font-size:16px;margin-bottom:8px;color:var(--ink)}
.rel span{color:var(--gray);font-size:13.5px;line-height:1.8;display:block}
.rel i{display:block;margin-top:13px;font-style:normal;font-size:13px;font-weight:700;color:var(--blue)}

/* 内页 CTA */
.cta-wrap{padding:0 0 72px}
.cta-box{background:linear-gradient(120deg,#062a4d,#0a4d7d 55%,#0a8fe0);border-radius:22px;padding:50px 46px;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.cta-box h3{font-size:25px;font-weight:800;margin-bottom:11px;letter-spacing:-.3px}
.cta-box p{color:#c8e6fb;font-size:14.5px;line-height:1.9;max-width:660px}
.cta-box .btn{flex:none}
.cta-box .btn-primary{background:#fff;color:#0a6fbf;box-shadow:0 8px 22px rgba(0,0,0,.18)}
.cta-box .btn-primary:hover{background:#eaf6ff}

/* 场景总览大卡 */
.sc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.sc-card{display:block;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s}
.sc-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(10,143,224,.12);border-color:#bfe0f5}
.sc-card .th{height:150px;overflow:hidden}
.sc-card .th img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.sc-card:hover .th img{transform:scale(1.06)}
.sc-card .bd{padding:22px 24px 26px}
.sc-card .bd h3{font-size:18px;font-weight:800;margin-bottom:6px;color:var(--ink)}
.sc-card .bd h4{font-size:12px;color:var(--cyan);font-weight:600;letter-spacing:1px;margin-bottom:11px}
.sc-card .bd p{color:var(--gray);font-size:13.8px;line-height:1.85}
.sc-card .bd i{display:block;margin-top:14px;font-style:normal;font-size:13px;font-weight:700;color:var(--blue)}

@media (max-width:960px){
  .plan-grid,.kpi-grid{grid-template-columns:repeat(2,1fr)}
  .rel-grid,.sc-grid{grid-template-columns:repeat(2,1fr)}
  .page-head h1{font-size:31px}
  .cta-box{padding:36px 26px}
}
@media (max-width:560px){
  .pain-grid,.plan-grid,.kpi-grid,.rel-grid,.sc-grid{grid-template-columns:1fr}
  .page-head h1{font-size:26px}
  .crumb{padding-top:92px}
}

/* ========== 二期样式（build v3：具身大脑 / 关于我们 / 案例） ========== */
.about-more{margin-top:22px}
.intro p{color:var(--gray);font-size:14.5px;line-height:2;margin-bottom:12px}
.intro p:last-child{margin-bottom:0}
.intro b{color:var(--ink)}
.page-note{margin-top:20px;padding:16px 20px;background:#f7fbfe;border:1px dashed #cfe6f7;border-radius:12px;font-size:13.2px;color:var(--gray);line-height:1.85}
.page-note b{color:var(--ink)}
.tl{position:relative;margin-top:16px;padding-left:26px}
.tl::before{content:"";position:absolute;left:4px;top:10px;bottom:10px;width:2px;background:linear-gradient(180deg,#39c2ff,#dbeaf7)}
.tl-item{position:relative;padding-bottom:24px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-26px;top:4px;width:9px;height:9px;border-radius:50%;background:#fff;border:3px solid var(--blue)}
.tl-item .yr{display:inline-block;font-size:12px;font-weight:800;color:var(--blue);letter-spacing:1.4px;margin-bottom:6px}
.tl-item b{display:block;font-size:16px;margin-bottom:7px}
.tl-item p{color:var(--gray);font-size:13.8px;line-height:1.9;max-width:920px}
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .2s,box-shadow .2s,transform .2s}
.case-card:hover{border-color:#bfe0f5;box-shadow:0 16px 34px rgba(10,143,224,.1);transform:translateY(-3px)}
.case-card .th{height:188px;overflow:hidden;background:#eef6fc}
.case-card .th img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s}
.case-card:hover .th img{transform:scale(1.05)}
.case-card .bd{padding:22px 24px 24px}
.case-card .meta{display:inline-block;font-size:12px;font-weight:800;color:var(--blue);letter-spacing:.6px;background:#eaf5fd;border-radius:999px;padding:3px 11px}
.case-card h3{font-size:17.5px;margin:12px 0 10px;line-height:1.45}
.case-card p{color:var(--gray);font-size:13.6px;line-height:1.88}
.case-rows{margin-top:16px;border-top:1px dashed var(--line);padding-top:14px;display:grid;gap:9px}
.case-rows div{display:flex;gap:9px;font-size:13.2px;line-height:1.75}
.case-rows i{font-style:normal;flex:none;font-weight:800;color:var(--blue);min-width:48px}
.case-rows span{color:var(--gray)}
.arch{display:grid;gap:12px}
.arch-row{display:grid;grid-template-columns:158px 1fr;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 22px;transition:border-color .2s,box-shadow .2s}
.arch-row:hover{border-color:#bfe0f5;box-shadow:0 12px 30px rgba(10,143,224,.08)}
.arch-row .lb{font-weight:800;font-size:15px;color:var(--ink)}
.arch-row .lb em{display:block;font-style:normal;font-size:11px;color:var(--gray-light);letter-spacing:1.4px;font-weight:700;margin-top:5px}
.arch-row .dg{color:var(--gray);font-size:13.6px;line-height:1.85}
@media(max-width:960px){.case-grid{grid-template-columns:1fr}.arch-row{grid-template-columns:1fr;gap:8px}}