/* ============ 智观信息官网 · 公共样式 ============ */
:root{
  --bg:#05070d;
  --bg2:#0a0f1c;
  --panel:rgba(255,255,255,.04);
  --line:rgba(255,255,255,.09);
  --txt:#eaf0fa;
  --muted:#93a1b8;
  --cyan:#00a0e9;
  --blue:#2b7bff;
  --deep:#0068b7;
  --grad:linear-gradient(90deg,#00a0e9,#2b7bff 55%,#7a5cff);
  --radius:18px;
  --nav-h:78px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--txt);
  font-family:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC",system-ui,-apple-system,sans-serif;
  overflow-x:hidden;line-height:1.7;
}
::selection{background:rgba(0,160,233,.35)}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.container{width:min(1240px,92%);margin:0 auto}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 顶部进度条 ---------- */
#progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:200;background:var(--grad);box-shadow:0 0 12px rgba(0,160,233,.7);transition:width .1s linear}

/* ---------- 导航 ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:100;transition:background .4s,border-color .4s;border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(6,9,18,.8);backdrop-filter:blur(18px);border-bottom-color:var(--line)}
.nav-inner{width:min(1400px,94%);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:var(--nav-h)}
.nav-logo{display:flex;align-items:center;gap:12px}
.nav-logo img{height:34px;width:auto}
.nav-links{display:flex;gap:4px;align-items:center}
.nav-links a{position:relative;padding:9px 15px;border-radius:10px;font-size:15px;color:#c6d2e6;transition:color .25s,background .25s}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-links a.active{color:#fff;background:rgba(0,160,233,.16);box-shadow:inset 0 0 0 1px rgba(0,160,233,.4)}
.nav-links a.active::after{content:"";position:absolute;left:15px;right:15px;bottom:4px;height:2px;border-radius:2px;background:var(--grad)}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px}
.burger span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;transition:.3s}

/* ---------- 按钮 ---------- */
.btn{padding:15px 40px;border-radius:999px;font-size:16px;font-weight:600;letter-spacing:2px;transition:transform .25s,box-shadow .25s,background .25s;cursor:pointer;display:inline-block;border:0;font-family:inherit}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 0 28px rgba(0,160,233,.45)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 8px 36px rgba(0,160,233,.65)}
.btn-ghost{border:1px solid rgba(255,255,255,.25);color:#dfe8f6;background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--cyan);color:#fff;background:rgba(0,160,233,.1);transform:translateY(-3px)}
.btn-sm{padding:11px 26px;font-size:14px}

/* ---------- 通用区块 ---------- */
section{padding:110px 0;position:relative}
section.tight{padding:70px 0}
.sec-tag{display:inline-block;font-size:13px;letter-spacing:6px;color:var(--cyan);border:1px solid rgba(0,160,233,.35);padding:6px 18px;border-radius:999px;margin-bottom:20px;background:rgba(0,160,233,.06)}
.sec-title{font-size:clamp(30px,4vw,48px);font-weight:800;letter-spacing:1px;line-height:1.3}
.sec-desc{margin-top:20px;color:var(--muted);font-size:16.5px;max-width:820px}
.sec-head{margin-bottom:60px}
.sec-head.center{text-align:center}
.sec-head.center .sec-desc{margin-left:auto;margin-right:auto}
.divider{height:1px;background:linear-gradient(90deg,transparent,rgba(0,160,233,.5),transparent)}

/* ---------- 滚动渐显 ---------- */
.reveal{opacity:0;transform:translateY(38px);transition:opacity .8s cubic-bezier(.2,.6,.2,1),transform .8s cubic-bezier(.2,.6,.2,1)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}.d4{transition-delay:.4s}.d5{transition-delay:.5s}.d6{transition-delay:.6s}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:170px 20px 100px;overflow:hidden}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.48;
  mask-image:radial-gradient(ellipse 78% 72% at 50% 45%,#000 30%,transparent 82%);
  -webkit-mask-image:radial-gradient(ellipse 78% 72% at 50% 45%,#000 30%,transparent 82%);
  animation:slowZoom 26s ease-in-out infinite alternate}
@keyframes slowZoom{from{transform:scale(1)}to{transform:scale(1.12)}}
#particles{position:absolute;inset:0;width:100%;height:100%}
.hero-glow{position:absolute;border-radius:50%;filter:blur(110px);opacity:.55;pointer-events:none}
.hero-glow.g1{width:640px;height:640px;background:rgba(0,104,183,.45);top:-180px;left:-120px;animation:drift 14s ease-in-out infinite alternate}
.hero-glow.g2{width:520px;height:520px;background:rgba(0,160,233,.3);bottom:-140px;right:-100px;animation:drift 18s ease-in-out infinite alternate-reverse}
.hero-glow.g3{width:420px;height:420px;background:rgba(122,92,255,.22);top:34%;left:56%;animation:drift 22s ease-in-out infinite alternate}
@keyframes drift{from{transform:translate(0,0) scale(1)}to{transform:translate(70px,40px) scale(1.12)}}
.hero-grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,170,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 75% 65% at 50% 42%,#000 35%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 75% 65% at 50% 42%,#000 35%,transparent 78%)}
.hero-inner{position:relative;z-index:2;max-width:1080px}
.hero-badge{display:inline-flex;align-items:center;gap:9px;border:1px solid rgba(0,160,233,.4);background:rgba(0,160,233,.08);padding:8px 20px;border-radius:999px;font-size:13px;color:#7fd4ff;letter-spacing:2px;margin-bottom:34px;backdrop-filter:blur(6px)}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{font-size:clamp(44px,7vw,92px);font-weight:800;line-height:1.16;letter-spacing:2px}
.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 26px rgba(0,160,233,.35))}
.hero p.sub{margin:30px auto 0;max-width:780px;color:#b9c6da;font-size:clamp(16px,2vw,20px);letter-spacing:5px}
.hero-actions{margin-top:52px;display:flex;gap:18px;justify-content:center;flex-wrap:wrap}
.hero-scroll{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);z-index:2;color:#5d6c85;font-size:12px;letter-spacing:3px;display:flex;flex-direction:column;align-items:center;gap:10px}
.hero-scroll .line{width:1px;height:44px;background:linear-gradient(#00a0e9,transparent);animation:scrollLine 2s infinite}
@keyframes scrollLine{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- 数据条 ---------- */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(0,104,183,.08),rgba(5,7,13,0))}
.stats-grid{display:grid;grid-template-columns:repeat(6,1fr)}
.stat{padding:54px 10px;text-align:center;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat .num{font-size:clamp(28px,3.4vw,46px);font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .num small{font-size:.55em}
.stat .lab{margin-top:6px;color:var(--muted);font-size:14px;letter-spacing:1px}

/* ---------- 卡片 ---------- */
.card{position:relative;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);overflow:hidden;transition:transform .4s,border-color .4s,box-shadow .4s;display:flex;flex-direction:column}
.card::after{content:"";position:absolute;inset:0;opacity:0;transition:opacity .4s;pointer-events:none;
  background:radial-gradient(600px circle at var(--mx,50%) var(--my,50%),rgba(0,160,233,.12),transparent 45%)}
.card:hover{transform:translateY(-8px);border-color:rgba(0,160,233,.5);box-shadow:0 20px 50px rgba(0,0,0,.45)}
.card:hover::after{opacity:1}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0b1220}
.card-media img{width:100%;height:100%;object-fit:cover;opacity:.96;transition:transform .7s,opacity .4s}
.card:hover .card-media img{transform:scale(1.08);opacity:1}
.card-media .veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,13,0) 55%,rgba(5,7,13,.5))}
.card-body{padding:34px 34px 38px;flex:1;display:flex;flex-direction:column}
.card .idx{font-size:13px;color:#4c6a8f;letter-spacing:3px;font-weight:700}
.card h3{margin-top:12px;font-size:24px;font-weight:700;letter-spacing:1px}
.card h3 em{font-style:normal;font-size:12.5px;color:var(--cyan);margin-left:10px;letter-spacing:2px}
.card p{margin-top:14px;color:var(--muted);font-size:15px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag{font-size:12.5px;color:#9fc9e8;border:1px solid rgba(0,160,233,.3);padding:4px 12px;border-radius:999px;background:rgba(0,160,233,.06)}
.card-link{margin-top:22px;color:var(--cyan);font-size:14px;letter-spacing:1px;transition:transform .3s;display:inline-block}
.card:hover .card-link{transform:translateX(6px)}
.biz-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split-img{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line)}
.split-img img{width:100%;height:100%;object-fit:cover;opacity:1;transition:transform .8s}
.split-img:hover img{transform:scale(1.05)}
.split-img .frame{position:absolute;inset:14px;border:1px solid rgba(0,160,233,.35);border-radius:12px;pointer-events:none}
.feat-list{list-style:none;margin-top:28px;display:grid;gap:16px}
.feat-list li{display:flex;gap:14px;color:#c3cfdf;font-size:15.5px}
.feat-list li b{color:#fff}
.feat-list li::before{content:"◈";color:var(--cyan);flex-shrink:0}

/* ---------- 服务模式 ---------- */
.model-node{position:relative;border:1px solid rgba(0,160,233,.3);border-radius:14px;background:rgba(8,14,28,.75);padding:20px 26px;margin-bottom:18px;display:flex;align-items:center;gap:18px;transition:border-color .3s,transform .3s,box-shadow .3s;backdrop-filter:blur(4px)}
.model-node:hover{border-color:var(--cyan);transform:translateX(10px);box-shadow:0 0 26px rgba(0,160,233,.25)}
.model-node .k{min-width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:var(--grad);font-weight:800;font-size:19px;color:#fff;box-shadow:0 0 18px rgba(0,160,233,.4)}
.model-node h4{font-size:17.5px;letter-spacing:1px}
.model-node p{color:var(--muted);font-size:13.5px;margin-top:3px}
.model-node::after{content:"";position:absolute;left:25px;bottom:-19px;width:1px;height:18px;background:linear-gradient(rgba(0,160,233,.6),transparent)}
.model-node:last-child::after{display:none}
.model-visual{position:relative;border-radius:22px;overflow:hidden;border:1px solid var(--line);min-height:520px}
.model-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.68}
.model-visual .inner{position:relative;padding:40px 34px}

/* ---------- 产品 ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.prod{position:relative;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.015));transition:transform .4s,border-color .4s;display:flex;flex-direction:column}
.prod:hover{transform:translateY(-8px);border-color:rgba(122,92,255,.55)}
.prod-media{aspect-ratio:16/9;overflow:hidden;position:relative;background:#0b1220}
.prod-media img{width:100%;height:100%;object-fit:cover;opacity:.96;transition:transform .7s,opacity .4s}
.prod:hover .prod-media img{transform:scale(1.1);opacity:1}
.prod-media .veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,13,.05) 55%,rgba(5,7,13,.5))}
.prod-body{padding:26px 26px 30px}
.prod .icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(0,160,233,.12);border:1px solid rgba(0,160,233,.3);margin-bottom:18px}
.prod .icon svg{width:25px;height:25px;stroke:#7fd4ff;fill:none;stroke-width:1.6}
.prod h3{font-size:19px;font-weight:700}
.prod p{margin-top:10px;color:var(--muted);font-size:14px}
.prod .glowline{position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad);opacity:0;transition:opacity .4s}
.prod:hover .glowline{opacity:1}

/* ---------- 行业 ---------- */
.ind-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.ind{border:1px solid var(--line);border-radius:14px;padding:26px 18px;text-align:center;background:var(--panel);transition:all .35s;position:relative;overflow:hidden}
.ind:hover{background:rgba(0,160,233,.1);border-color:rgba(0,160,233,.5);transform:translateY(-5px)}
.ind .no{font-size:12px;color:#41608a;letter-spacing:2px}
.ind h4{margin-top:8px;font-size:17px;letter-spacing:2px}
.ind p{margin-top:8px;font-size:12.5px;color:var(--muted)}
.bg-strip{position:relative}
.bg-strip .bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.35}
.bg-strip .veil{position:absolute;inset:0;background:linear-gradient(180deg,var(--bg) 0%,rgba(5,7,13,.55) 30%,rgba(5,7,13,.55) 70%,var(--bg) 100%)}
.bg-strip>.container{position:relative;z-index:2}

/* ---------- 案例 ---------- */
.case-marquee{overflow:hidden;position:relative;padding:8px 0;mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.case-track{display:flex;gap:22px;width:max-content;animation:marquee 42s linear infinite}
.case-marquee:hover .case-track{animation-play-state:paused}
@keyframes marquee{to{transform:translateX(-50%)}}
.case{width:390px;flex-shrink:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);overflow:hidden;transition:border-color .35s,transform .35s;display:flex;flex-direction:column}
.case:hover{border-color:rgba(0,160,233,.5);transform:translateY(-5px)}
.case-media{height:130px;overflow:hidden;position:relative;background:#0b1220}
.case-media img{width:100%;height:100%;object-fit:cover;opacity:.95;transition:transform .7s,opacity .4s}
.case:hover .case-media img{transform:scale(1.08);opacity:1}
.case-media .veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,13,.08) 45%,rgba(5,7,13,.55))}
.case-body{padding:26px 28px 30px}
.case .co{font-size:20px;font-weight:700;letter-spacing:1px}
.case .co span{font-size:12px;color:var(--cyan);margin-left:10px;letter-spacing:2px}
.case p{margin-top:12px;color:var(--muted);font-size:14px;min-height:132px}
.case .metric{margin-top:14px;display:flex;gap:26px}
.case .metric div b{display:block;font-size:23px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800}
.case .metric div span{font-size:12px;color:var(--muted)}

/* ---------- 城市 ---------- */
.city-cloud{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.city{border:1px solid var(--line);border-radius:999px;padding:9px 22px;font-size:14.5px;color:#c3cfdf;background:rgba(255,255,255,.04);transition:all .3s}
.city:hover{border-color:var(--cyan);color:#fff;background:rgba(0,160,233,.12);box-shadow:0 0 16px rgba(0,160,233,.3)}
.city.hq{background:var(--grad);color:#fff;border-color:transparent;font-weight:700;box-shadow:0 0 20px rgba(0,160,233,.4)}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:20px;padding-left:34px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:1px;background:linear-gradient(rgba(0,160,233,.7),rgba(122,92,255,.4),transparent)}
.tl-item{position:relative;padding:0 0 34px 0}
.tl-item::before{content:"";position:absolute;left:-31px;top:7px;width:11px;height:11px;border-radius:50%;background:var(--cyan);box-shadow:0 0 14px rgba(0,160,233,.9)}
.tl-item .y{font-size:13px;letter-spacing:3px;color:var(--cyan);font-weight:700}
.tl-item h4{margin-top:6px;font-size:18.5px}
.tl-item p{margin-top:6px;color:var(--muted);font-size:14.5px}

/* ---------- 资质 ---------- */
.qual-grid{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}
.qual{border:1px solid var(--line);border-radius:12px;padding:16px 30px;background:var(--panel);font-size:15px;letter-spacing:1px;color:#c9d5e6;display:flex;align-items:center;gap:10px;transition:all .3s}
.qual::before{content:"✔";color:var(--cyan);font-size:13px}
.qual:hover{border-color:rgba(0,160,233,.5);transform:translateY(-3px)}

/* ---------- 加入我们 ---------- */
.join{text-align:center;border:1px solid rgba(0,160,233,.3);border-radius:26px;overflow:hidden;position:relative;padding:90px 40px}
.join .jb{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
.join .jv{position:absolute;inset:0;background:radial-gradient(700px 300px at 50% 0,rgba(0,160,233,.28),transparent),linear-gradient(180deg,rgba(5,7,13,.5),rgba(5,7,13,.78))}
.join>*{position:relative;z-index:2}
.join h2{font-size:clamp(28px,4vw,44px);font-weight:800}
.join p{margin-top:18px;color:#b9c6da;max-width:660px;margin-left:auto;margin-right:auto}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:8px;letter-spacing:1px}
.field input,.field select,.field textarea{
  width:100%;padding:14px 16px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--txt);font-size:15px;font-family:inherit;transition:border-color .3s,background .3s}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--cyan);background:rgba(0,160,233,.06)}
.field.full{grid-column:1/-1}
.form-note{margin-top:18px;font-size:13px;color:#5d6c85}

/* ---------- 联系卡片 ---------- */
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cc{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:32px 28px;transition:border-color .3s,transform .3s}
.cc:hover{border-color:rgba(0,160,233,.5);transform:translateY(-5px)}
.cc h4{font-size:13px;letter-spacing:4px;color:var(--cyan)}
.cc .val{margin-top:14px;font-size:19px;font-weight:700}
.cc .sub{margin-top:6px;color:var(--muted);font-size:14px}
.cc .sub a{color:#bcd9f5;text-decoration:none;border-bottom:1px dashed rgba(0,160,233,.45);transition:color .25s,border-color .25s}
.cc .sub a:hover{color:#fff;border-color:#fff}
footer ul li a{color:#bcd9f5;text-decoration:none;border-bottom:1px dashed rgba(0,160,233,.45);transition:color .25s,border-color .25s}
footer ul li a:hover{color:#fff;border-color:#fff}

/* ---------- 页脚 ---------- */
footer{border-top:1px solid var(--line);background:#04060b;padding:80px 0 36px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:50px}
.foot-logo img{height:38px;width:auto}
.foot-grid p,.foot-grid a{color:var(--muted);font-size:14px}
.foot-grid h5{color:#fff;font-size:15.5px;letter-spacing:2px;margin-bottom:20px}
.foot-grid ul{list-style:none;display:grid;gap:12px}
.foot-grid a:hover{color:var(--cyan)}
.foot-bottom{margin-top:60px;padding-top:26px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#5d6c85;font-size:13px}
.foot-bottom a{color:#8fa3c0;text-decoration:none;transition:color .25s}
.foot-bottom a:hover{color:#fff}

/* ---------- 返回顶部 ---------- */
#backtop{position:fixed;right:28px;bottom:28px;z-index:90;width:48px;height:48px;border-radius:50%;border:1px solid rgba(0,160,233,.4);background:rgba(8,14,28,.85);color:var(--cyan);font-size:18px;cursor:pointer;opacity:0;pointer-events:none;transition:all .35s;backdrop-filter:blur(8px)}
#backtop.show{opacity:1;pointer-events:auto}
#backtop:hover{background:var(--grad);color:#fff;box-shadow:0 0 22px rgba(0,160,233,.5)}

/* ---------- 响应式 ---------- */
@media(max-width:1080px){
  .stats-grid{grid-template-columns:repeat(3,1fr)}
  .stat{border-top:1px solid var(--line)}
  .stat:nth-child(3n+1){border-left:0}
  .stat:nth-child(-n+3){border-top:0}
  .biz-grid,.split,.contact-cards{grid-template-columns:1fr}
  .split{gap:40px}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .ind-grid{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .nav-links{position:fixed;top:var(--nav-h);right:0;width:min(320px,82vw);height:calc(100vh - var(--nav-h));
    background:rgba(6,9,18,.97);backdrop-filter:blur(20px);flex-direction:column;align-items:flex-start;
    padding:28px 24px;gap:6px;transform:translateX(100%);transition:transform .35s;border-left:1px solid var(--line)}
  .nav-links.open{transform:none}
  .nav-links a{font-size:16px;padding:12px 14px;width:100%}
  .burger{display:block}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(odd){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .stat:nth-child(-n+3){border-top:0}
  .prod-grid,.ind-grid{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr}
  .case{width:300px}
  section{padding:80px 0}
  .nav-logo img{height:28px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}


/* ---------- 业务体系页组件 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc{position:relative;border:1px solid var(--line);border-radius:16px;padding:28px 26px;background:rgba(255,255,255,.02);transition:transform .35s,border-color .35s,background .35s;overflow:hidden}
.svc:hover{transform:translateY(-6px);border-color:rgba(0,160,233,.45);background:rgba(0,160,233,.05)}
.svc .flag,.ai .flag{position:absolute;top:18px;right:18px;font-size:12px;letter-spacing:2px;color:#8ff0ff;background:rgba(0,160,233,.12);border:1px solid rgba(0,160,233,.35);padding:4px 12px;border-radius:999px}
.svc .flag.aux,.ai .flag.aux{color:#9fb4d6;background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.15)}
.svc h3{font-size:18.5px;margin-bottom:14px}
.svc ul{color:var(--muted);font-size:14px;line-height:1.9;padding-left:0;list-style:none}
.svc li{padding-left:18px;position:relative}
.svc li::before{content://;position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--grad)}
.svc .mode{margin-top:16px;padding-top:14px;border-top:1px dashed rgba(255,255,255,.12);font-size:13.5px;color:#9fb4d6}
.svc .mode b{color:#8ff0ff;font-weight:600}
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ai{position:relative;border:1px solid var(--line);border-radius:16px;padding:26px;background:linear-gradient(180deg,rgba(0,160,233,.05),rgba(255,255,255,.015));transition:transform .35s,border-color .35s;overflow:hidden}
.ai:hover{transform:translateY(-6px);border-color:rgba(0,160,233,.5)}
.ai h3{font-size:18px;margin:10px 40px 10px 0}
.ai p{color:var(--muted);font-size:14px;line-height:1.8}
.ai .chips,.layer .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.ai .chips span,.layer .chips span{font-size:12.5px;color:#bcd9f5;border:1px solid rgba(0,160,233,.3);background:rgba(0,160,233,.07);padding:4px 10px;border-radius:999px}
.ai .val{margin-top:14px;font-size:13.5px;color:#8ff0ff}
.ai .val b{color:#fff;font-weight:700}
.arch-stack{max-width:880px;margin:0 auto;display:flex;flex-direction:column}
.layer{border:1px solid rgba(0,160,233,.28);border-radius:14px;padding:22px 26px;background:rgba(0,104,183,.07);margin-bottom:14px;display:grid;grid-template-columns:90px 1fr;gap:18px;align-items:start}
.layer:hover{border-color:rgba(0,160,233,.55)}
.layer .ln{font-size:32px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.layer h3{font-size:17px}
.layer p{color:var(--muted);font-size:13.5px;margin-top:4px}
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.scene{border:1px solid var(--line);border-radius:14px;padding:22px 20px;background:rgba(255,255,255,.02);transition:transform .35s,border-color .35s}
.scene:hover{border-color:rgba(0,160,233,.45);transform:translateY(-5px)}
.scene h3{font-size:16px}
.scene p{color:var(--muted);font-size:13px;margin-top:8px;line-height:1.7}
.scene .m{margin-top:14px;font-weight:800;font-size:20px}
.matrix-wrap{overflow-x:auto}
.matrix{width:100%;border-collapse:collapse;font-size:13.5px;min-width:860px}
.matrix th{background:rgba(0,104,183,.32);color:#fff;font-weight:600;text-align:left;padding:14px 16px;letter-spacing:1px;white-space:nowrap}
.matrix td{padding:14px 16px;border-bottom:1px solid var(--line);color:var(--muted);vertical-align:top;line-height:1.7}
.matrix td:first-child{color:#fff;font-weight:700;white-space:nowrap}
.matrix tr:hover td{background:rgba(0,160,233,.05)}
.matrix .lv{display:inline-block;font-size:12px;color:#8ff0ff;border:1px solid rgba(0,160,233,.4);border-radius:999px;padding:2px 10px;margin-right:8px}
.base-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.base{border:1px solid var(--line);border-radius:14px;padding:24px;background:rgba(255,255,255,.02)}
.base h3{font-size:16px;margin-bottom:12px;color:#8ff0ff}
.base ul{list-style:none;color:var(--muted);font-size:13.5px;line-height:2;padding-left:0}
.base li::before{content:/›/;margin-right:8px;color:var(--cyan)}
.path-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.path{position:relative;border:1px solid var(--line);border-radius:14px;padding:30px 22px 24px;background:linear-gradient(180deg,rgba(0,160,233,.06),rgba(255,255,255,.015));transition:transform .35s,border-color .35s}
.path:hover{transform:translateY(-5px);border-color:rgba(0,160,233,.5)}
.path .n{position:absolute;top:-16px;left:20px;width:34px;height:34px;border-radius:10px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;box-shadow:0 6px 18px rgba(0,160,233,.5)}
.path .st{font-size:12px;letter-spacing:3px;color:#8ff0ff}
.path h3{font-size:17px;margin:10px 0}
.path p{color:var(--muted);font-size:13.5px;line-height:1.8}
@media(max-width:980px){.svc-grid,.ai-grid,.base-grid,.path-grid,.scene-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.svc-grid,.ai-grid,.base-grid,.path-grid,.scene-grid{grid-template-columns:1fr}.layer{grid-template-columns:1fr}}