/* IBM Plex Mono · 自托管 latin 子集（共约 30KB），避免第三方 CDN 依赖 */
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:300;font-display:swap;src:url(../fonts/ibm-plex-mono-300.woff2) format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/ibm-plex-mono-400.woff2) format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/ibm-plex-mono-500.woff2) format('woff2')}

:root{
  --ink:#07080E; --ink-2:#0B0D18; --panel:#101324; --panel-2:#151935;
  --line:rgba(233,236,246,.09); --line-2:rgba(233,236,246,.18);
  --fg:#EDEFF7; --fg-2:#A7ADC2; --fg-3:#6C7391;
  --accent:#7836FF;
  --head:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:'IBM Plex Mono','SF Mono',Menlo,Consolas,monospace;
  --pad:max(5vw,28px);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{background:var(--ink);color:var(--fg);font-family:var(--head);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;line-height:1.7}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:var(--head);cursor:pointer;border:0;background:none;color:inherit}
::selection{background:var(--accent);color:#fff}

/* ---------- ambient ---------- */
.grain{position:fixed;inset:0;z-index:9998;pointer-events:none;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E")}
.aura{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.aura i{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.aura i:nth-child(1){width:640px;height:640px;left:-14%;top:6%;background:radial-gradient(circle,rgba(74,66,144,.55),transparent 68%)}
.aura i:nth-child(2){width:560px;height:560px;right:-10%;top:34%;background:radial-gradient(circle,rgba(54,91,146,.42),transparent 70%)}
.aura i:nth-child(3){width:520px;height:520px;left:38%;bottom:-14%;background:radial-gradient(circle,rgba(120,54,255,.16),transparent 70%)}

/* ---------- shared ---------- */
.wrap{max-width:1360px;margin:0 auto;padding:0 var(--pad);position:relative;z-index:2}
section{position:relative;z-index:2}
.eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:.22em;color:var(--accent);
  display:flex;align-items:center;gap:12px;text-transform:uppercase}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);opacity:.8}
h1,h2,h3,h4{font-family:var(--head);font-weight:600;letter-spacing:-.005em}
h2{font-size:clamp(28px,3.5vw,50px);line-height:1.3;margin:22px 0 0;font-weight:600}
h2 em{font-style:normal;color:var(--accent)}
.lede{color:var(--fg-2);font-size:16px;max-width:62ch;font-weight:300}
.btn{display:inline-flex;align-items:center;gap:10px;font-size:14px;font-weight:500;
  padding:15px 28px;border-radius:4px;border:1px solid transparent;
  transition:.35s cubic-bezier(.2,.7,.2,1);position:relative;letter-spacing:.02em}
.btn-p{background:var(--accent);color:#F6F4FF}
.btn-p:hover{box-shadow:0 0 0 1px var(--accent),0 14px 40px -12px rgba(120,54,255,.7);transform:translateY(-2px)}
.btn-g{border-color:var(--line-2);color:var(--fg)}
.btn-g:hover{border-color:var(--accent);color:var(--accent)}
.btn span{transition:transform .35s}
.btn:hover span{transform:translateX(4px)}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.head-row{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;flex-wrap:wrap}

/* ---------- nav ---------- */
header{position:fixed;top:0;left:0;right:0;z-index:100;transition:.4s}
header .bar{height:80px;display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--pad);max-width:1360px;margin:0 auto}
header.solid{background:rgba(7,8,14,.72);backdrop-filter:blur(18px) saturate(1.4);border-bottom:1px solid var(--line)}
.brand img{height:40px;width:auto;filter:brightness(1.85) saturate(1.05)}
nav{display:flex;gap:32px;align-items:center}
nav a{font-size:14px;color:var(--fg-2);position:relative;padding:6px 0;transition:.3s;letter-spacing:.02em}
nav a::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--accent);transition:.35s}
nav a:hover{color:var(--fg)} nav a:hover::after{width:100%}
nav a.on{color:var(--fg)} nav a.on::after{width:100%}
.cta-sm{padding:12px 22px;font-size:13.5px}
.burger{display:none;flex-direction:column;gap:5px;padding:8px}
.burger i{width:22px;height:1.5px;background:var(--fg);display:block}

/* ---------- hero ---------- */
.hero{min-height:100vh;display:flex;align-items:center;padding:132px 0 120px;overflow:hidden}
.hero .grid{display:grid;grid-template-columns:1fr 1.02fr;gap:52px;align-items:center;width:100%}
.hero .grid>*{min-width:0}
.hero h1{font-size:clamp(36px,5vw,70px);line-height:1.16;margin:26px 0 0;font-weight:600;letter-spacing:-.01em}
.hero h1 em{font-style:normal;position:relative;color:var(--accent)}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:.08em;height:1px;background:var(--accent);opacity:.5}
.hero p.lede{margin-top:26px;font-size:16.5px;line-height:1.85}
.hero .acts{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}
.hero .meta{margin-top:46px;display:flex;gap:34px;flex-wrap:wrap;
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--fg-3);text-transform:uppercase}
.hero .meta b{color:var(--fg-2);font-weight:400}

/* ---------- carousel ---------- */
.carousel{position:relative}
.viewport{position:relative;border-radius:6px;overflow:hidden}
.track{display:flex;width:100%;transition:transform .85s cubic-bezier(.22,.72,.14,1)}
.slide{flex:0 0 100%;min-width:0;display:flex;flex-direction:column}
.stage{position:relative;width:100%;aspect-ratio:16/10;display:flex;align-items:center;justify-content:center}
.stage .glow{position:absolute;width:80%;height:80%;border-radius:50%;
  background:radial-gradient(circle,rgba(120,54,255,.20),rgba(74,66,144,.22) 45%,transparent 72%);filter:blur(30px)}
.stage img{position:relative;width:98%;max-height:100%;object-fit:contain;
  filter:drop-shadow(0 34px 60px rgba(0,0,0,.72))}
.stage .ring{position:absolute;inset:5% 8%;border:1px solid var(--line);border-radius:50%;
  border-style:dashed;animation:spin 60s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.cap{display:flex;align-items:baseline;gap:14px;padding:16px 4px 0}
.cap .no{font-family:var(--mono);font-size:11px;color:var(--accent);letter-spacing:.16em}
.cap b{font-size:20px;font-weight:600;letter-spacing:.01em}
.cap i{font-style:normal;font-family:var(--mono);font-size:10.5px;color:var(--fg-3);letter-spacing:.1em;margin-left:auto}
/* banner 切换按钮已按要求移除，仅保留圆点指示 */
.ctrl{display:flex;align-items:center;justify-content:space-between;margin-top:14px;gap:20px}
.dots{display:flex;gap:9px;z-index:4}
.dots button{width:26px;height:2px;background:var(--line-2);transition:.4s;border-radius:2px}
.dots button.on{background:var(--accent);width:44px}
.count{font-family:var(--mono);font-size:11px;color:var(--fg-3);letter-spacing:.14em;z-index:4}
.count b{color:var(--accent);font-weight:400}
.waveband{position:absolute;left:0;right:0;bottom:0;height:170px;z-index:1;pointer-events:none;opacity:.5;
  -webkit-mask-image:linear-gradient(to bottom,transparent 0%,#000 34%);
  mask-image:linear-gradient(to bottom,transparent 0%,#000 34%)}
.waveband svg{width:100%;height:100%}

/* ---------- metrics ---------- */
.metrics{border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(16,19,36,.5),transparent)}
.metrics .row{display:grid;grid-template-columns:repeat(6,1fr)}
.metrics .m{padding:34px 6px 32px;border-right:1px solid var(--line)}
.metrics .m:last-child{border-right:0}
.metrics .n{font-size:clamp(23px,2.6vw,34px);font-weight:600;line-height:1;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums}
.metrics .n b{font-weight:600;color:var(--accent)}
.metrics .l{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;color:var(--fg-3);
  margin-top:12px;text-transform:uppercase}

/* ---------- statement ---------- */
.statement{padding:140px 0 120px}
.statement .q{font-size:clamp(25px,3.7vw,52px);line-height:1.42;max-width:25ch;font-weight:600;letter-spacing:-.005em}
.statement .q mark{background:none;color:var(--fg);position:relative}
.statement .q mark::after{content:"";position:absolute;left:-2px;right:-2px;bottom:6px;height:.34em;
  background:rgba(120,54,255,.18);z-index:-1}
.statement .side{margin-top:52px;display:grid;grid-template-columns:repeat(3,1fr);gap:40px;
  border-top:1px solid var(--line);padding-top:34px}
.statement .side p{color:var(--fg-2);font-size:14.5px;font-weight:300;margin-top:10px}
.statement .side h4{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--accent);font-weight:500}

/* ---------- products ---------- */
.products{padding:120px 0}
.pgrid{margin-top:66px;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sysband{margin-top:18px;border:1px solid var(--line);border-radius:5px;
  background:linear-gradient(90deg,rgba(21,25,53,.52),rgba(16,19,36,.18));
  display:grid;grid-template-columns:1.08fr 1fr;gap:44px;padding:46px 44px;align-items:center}
.sysband>*{min-width:0}
.sflow{display:flex;align-items:center;flex-wrap:wrap;gap:0}
.sflow .sf{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--fg-2);
  display:flex;align-items:center;gap:9px;text-transform:uppercase}
.sflow .sf i{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);flex:none}
.sflow .sl{flex:1;min-width:22px;height:1px;margin:0 13px;opacity:.75;
  background:linear-gradient(90deg,var(--accent),var(--line-2))}
.sdesc{margin-top:24px;font-size:13.5px;color:var(--fg-3);font-weight:300;letter-spacing:.02em}
.sysbd .no{font-family:var(--mono);font-size:10.5px;color:var(--fg-3);letter-spacing:.18em}
.sysbd h3{font-size:23px;font-weight:600;margin:12px 0 12px}
.sysbd p{color:var(--fg-2);font-size:13.8px;font-weight:300;line-height:1.75;max-width:44ch}
.pcard{border:1px solid var(--line);border-radius:5px;overflow:hidden;background:linear-gradient(180deg,rgba(21,25,53,.42),transparent);
  transition:.5s cubic-bezier(.2,.7,.2,1);display:flex;flex-direction:column}
.pcard:hover{border-color:rgba(120,54,255,.55);transform:translateY(-6px)}
.pcard .pic{position:relative;aspect-ratio:16/11;display:flex;align-items:center;justify-content:center;padding:16px;
  background:radial-gradient(ellipse at 50% 55%,rgba(120,54,255,.14),transparent 68%)}
.pcard .pic img{max-height:100%;width:auto;max-width:94%;object-fit:contain;
  filter:drop-shadow(0 20px 34px rgba(0,0,0,.6));transition:.6s cubic-bezier(.2,.7,.2,1)}
.pcard:hover .pic img{transform:scale(1.045)}
.pcard .bd{padding:22px 24px 28px;border-top:1px solid var(--line);flex:1}
.pcard .no{font-family:var(--mono);font-size:10.5px;color:var(--fg-3);letter-spacing:.18em}
.pcard h3{font-size:19px;font-weight:600;margin:11px 0 9px}
.pcard p{color:var(--fg-2);font-size:13.4px;font-weight:300;line-height:1.72}
.pcard .sys{aspect-ratio:16/11;display:flex;flex-direction:column;justify-content:center;gap:9px;padding:22px 24px}
.pcard .sys .row{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:10.5px;
  letter-spacing:.1em;color:var(--fg-2);text-transform:uppercase}
.pcard .sys .row i{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none;box-shadow:0 0 8px var(--accent)}
.pcard .sys .row s{flex:1;height:1px;background:linear-gradient(90deg,var(--line-2),transparent);text-decoration:none}

/* ---------- tech ---------- */
.tech{padding:120px 0;border-top:1px solid var(--line)}
.flow{margin-top:70px;display:grid;grid-template-columns:repeat(4,1fr);position:relative}
.flow::before{content:"";position:absolute;top:34px;left:6%;right:6%;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-2) 12%,var(--line-2) 88%,transparent)}
.flow .step{position:relative;padding-right:26px}
.flow .dot{width:9px;height:9px;border-radius:50%;background:var(--ink);border:1px solid var(--accent);
  position:relative;z-index:2;margin:30px 0 0 -1px}
.flow .dot::after{content:"";position:absolute;inset:-6px;border-radius:50%;background:var(--accent);opacity:.18}
.flow .idx{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--accent);margin-top:22px}
.flow h3{font-size:22px;margin:10px 0 12px;font-weight:600}
.flow p{color:var(--fg-2);font-size:14px;font-weight:300;line-height:1.75;max-width:30ch}
.tgrid{margin-top:76px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.tcard{background:var(--ink);padding:34px 32px 38px;transition:.45s;position:relative}
.tcard:hover{background:var(--panel)}
.tcard::after{content:"";position:absolute;left:0;top:0;width:0;height:1px;background:var(--accent);transition:.5s}
.tcard:hover::after{width:100%}
.tcard .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--fg-3)}
.tcard h4{font-size:17px;font-weight:600;margin:14px 0 10px}
.tcard p{color:var(--fg-2);font-size:13.5px;font-weight:300;line-height:1.72}

/* ---------- software ---------- */
.software{padding:120px 0;border-top:1px solid var(--line);
  background:linear-gradient(180deg,transparent,rgba(16,19,36,.42) 40%,transparent)}
.software .grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px;align-items:center}
.software .grid>*{min-width:0}
.feats{margin-top:38px}
.feat{border-top:1px solid var(--line);padding:20px 0;display:grid;grid-template-columns:auto 1fr;gap:20px}
.feat .num{font-family:var(--mono);font-size:11px;color:var(--accent);padding-top:5px}
.feat h4{font-size:16px;font-weight:600;margin-bottom:6px}
.feat p{color:var(--fg-2);font-size:13.4px;font-weight:300;line-height:1.7}
.metrics-mini{margin-top:30px;display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.metrics-mini div{background:var(--ink);padding:17px 19px}
.metrics-mini .v{font-family:var(--mono);font-size:18px;color:var(--accent);font-variant-numeric:tabular-nums}
.metrics-mini .k{font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:var(--fg-3);margin-top:8px}
.phones{display:flex;gap:24px;justify-content:center;align-items:flex-end;position:relative}
.phone{width:29%;border-radius:24px;overflow:hidden;border:1px solid var(--line-2);
  box-shadow:0 40px 80px -30px rgba(0,0,0,.9);background:#000;transition:.6s cubic-bezier(.2,.7,.2,1);
  position:relative}
.phone .lab{position:absolute;top:0;left:0;right:0;padding:8px 0;text-align:center;
  font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;color:#fff;background:rgba(10,11,20,.72);
  backdrop-filter:blur(6px);text-transform:uppercase;z-index:2}
.phone:nth-child(1){transform:translateY(22px) rotate(-3deg)}
.phone:nth-child(2){z-index:3;width:38%;transform:translateY(-10px)}
.phone:nth-child(3){transform:translateY(22px) rotate(3deg)}
.phone:hover{transform:translateY(0) rotate(0)}

/* ---------- scenarios ---------- */
.scen{padding:120px 0;border-top:1px solid var(--line)}
.scengrid{margin-top:64px;display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.scard{background:var(--ink);padding:36px 26px 40px;transition:.45s;position:relative;overflow:hidden}
.scard:hover{background:var(--panel-2)}
.scard .no{font-family:var(--mono);font-size:10.5px;color:var(--fg-3);letter-spacing:.16em}
.scard h4{font-size:19px;margin:18px 0 10px;font-weight:600}
.scard p{color:var(--fg-2);font-size:13px;font-weight:300;line-height:1.68}
.scard .wave{position:absolute;right:-12px;bottom:-4px;width:104px;opacity:.2;color:var(--accent)}

/* ---------- cooperation ---------- */
.coop{padding:110px 0;border-top:1px solid var(--line)}
.coopgrid{margin-top:60px;display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.ccard{background:var(--ink);padding:38px 30px 44px;transition:.45s}
.ccard:hover{background:var(--panel-2)}
.ccard .ic{width:44px;height:44px;border:1px solid var(--line-2);border-radius:50%;display:flex;
  align-items:center;justify-content:center;color:var(--accent);font-family:var(--mono);font-size:13px;transition:.45s}
.ccard:hover .ic{background:var(--accent);color:#F6F4FF;border-color:var(--accent)}
.ccard h4{font-size:17px;font-weight:600;margin:24px 0 11px}
.ccard p{color:var(--fg-2);font-size:13.4px;font-weight:300;line-height:1.74}

/* ---------- roadmap ---------- */
.road{padding:120px 0;border-top:1px solid var(--line)}
.tl{margin-top:74px;display:grid;grid-template-columns:repeat(3,1fr);gap:46px;position:relative}
.tl::before{content:"";position:absolute;top:5px;left:0;right:0;height:1px;background:var(--line-2)}
.tl .node{padding-top:34px;position:relative}
.tl .node::before{content:"";position:absolute;top:0;left:0;width:11px;height:11px;border-radius:50%;
  background:var(--ink);border:1px solid var(--line-2)}
.tl .node.on::before{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 6px rgba(120,54,255,.14)}
.tl .ph{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--accent)}
.tl h3{font-size:23px;margin:14px 0 18px;font-weight:600}
.tl ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.tl li{color:var(--fg-2);font-size:13.6px;font-weight:300;padding-left:18px;position:relative}
.tl li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:1px;background:var(--accent);opacity:.7}

/* ---------- about ---------- */
.about{padding:120px 0 130px;border-top:1px solid var(--line)}
.about .grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.about .grid>*{min-width:0}
.wall{position:relative;border:1px solid var(--line);overflow:hidden;border-radius:5px}
.wall img{width:100%;filter:saturate(.85) brightness(.82);transition:1.4s cubic-bezier(.2,.7,.2,1)}
.wall:hover img{transform:scale(1.045)}
.wall::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,8,14,.2),rgba(7,8,14,.6))}
.about h3{font-size:clamp(22px,2.4vw,32px);line-height:1.5;margin:20px 0 0;font-weight:600}
.about .grp{margin-top:34px}
.about .grp .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--accent)}
.about .grp p{color:var(--fg-2);font-size:14px;font-weight:300;margin-top:11px;line-height:1.8}
.about .stats{margin-top:38px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.about .stats div{background:var(--ink);padding:20px 18px}
.about .stats .v{font-size:26px;font-weight:600;line-height:1;font-variant-numeric:tabular-nums}
.about .stats .n{font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:var(--fg-3);margin-top:9px}
.about .certs{margin-top:26px;display:flex;flex-wrap:wrap;gap:8px}
.about .certs span{font-family:var(--mono);font-size:10.5px;color:var(--fg-2);border:1px solid var(--line-2);padding:7px 12px;border-radius:3px}

/* ---------- final + footer ---------- */
.final{padding:140px 0;text-align:center;position:relative;overflow:hidden;border-top:1px solid var(--line)}
.final h2{font-size:clamp(30px,4.4vw,60px);margin-bottom:0}
.final p{color:var(--fg-2);margin:24px auto 0;max-width:46ch;font-weight:300}
.final .acts{display:flex;gap:14px;justify-content:center;margin-top:40px;flex-wrap:wrap}
.final .wavebg{position:absolute;left:0;right:0;top:50%;transform:translateY(-50%);opacity:.14;pointer-events:none}
footer{border-top:1px solid var(--line);padding:66px 0 32px;position:relative;z-index:2}
footer .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
footer .brand{margin-bottom:18px}
footer .brand img{height:38px}
footer .about2{color:var(--fg-3);font-size:13px;font-weight:300;max-width:34ch;line-height:1.8}
footer h5{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--fg-3);margin-bottom:18px;text-transform:uppercase}
footer ul{list-style:none;display:flex;flex-direction:column;gap:11px}
footer li a{font-size:13.5px;color:var(--fg-2);transition:.3s}
footer li a:hover{color:var(--accent)}
footer .bot{margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:var(--fg-3)}

@media(max-width:1180px){
  .pgrid,.tgrid{grid-template-columns:repeat(2,1fr)}
  .sysband{grid-template-columns:1fr;gap:28px;padding:34px 30px}
  .scengrid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:1080px){
  .hero .grid,.software .grid,.about .grid{grid-template-columns:1fr;gap:52px}
  .metrics .row{grid-template-columns:repeat(3,1fr)}
  .metrics .m:nth-child(3){border-right:0}
  .flow,.coopgrid,.tl{grid-template-columns:repeat(2,1fr)}
  .about .stats{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:680px){
  nav{display:none}
  .burger{display:flex}
  header .bar{height:66px}
  .brand img{height:32px}
  .cta-sm{padding:10px 14px;font-size:12.5px}
  .hero{padding:104px 0 84px}
  .hero h1{font-size:clamp(29px,8.4vw,40px)}
  .hero .meta{gap:9px 20px;font-size:10px;letter-spacing:.1em}
  .hero .acts .btn{flex:1 1 auto;justify-content:center}
  .metrics .row{grid-template-columns:repeat(2,1fr)}
  .metrics .m:nth-child(3){border-right:1px solid var(--line)}
  .metrics .m:nth-child(2n){border-right:0}
  .metrics .m{padding:24px 4px}
  .pgrid,.tgrid,.flow,.coopgrid,.tl,.statement .side,.metrics-mini,footer .cols,.about .stats{grid-template-columns:1fr}
  .sysband{padding:26px 22px}
  .scengrid{grid-template-columns:1fr}
  .statement .q{font-size:clamp(20px,5.8vw,27px)}
  .phones{gap:8px}.phone{width:30%;border-radius:16px}
  .phone:nth-child(2){width:38%;transform:translateY(-6px)}
  .phone .lab{font-size:8px}
  .cbtn{display:none}
  .cap b{font-size:17px} .cap i{display:none}
  .statement,.products,.tech,.software,.scen,.coop,.road,.about{padding:78px 0}
  .final{padding:92px 0}
  footer{padding:50px 0 26px}
}

/* ===== 生产补充：图片自适应 / 无障碍 / 移动端抽屉 ===== */
picture{display:contents}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-9999px;top:0;z-index:9999;background:var(--accent);color:#fff;
  padding:13px 22px;font-size:14px;border-radius:0 0 4px 0}
.skip:focus{left:0}
.drawer{position:fixed;inset:0;z-index:99;padding:104px var(--pad) 44px;
  background:rgba(7,8,14,.975);-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);
  display:flex;flex-direction:column;opacity:0;transform:translateY(-10px);
  transition:opacity .28s cubic-bezier(.2,.7,.2,1),transform .28s cubic-bezier(.2,.7,.2,1);overflow-y:auto}
.drawer.on{opacity:1;transform:none}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{font-size:19px;font-weight:500;color:var(--fg);padding:17px 2px;
  border-bottom:1px solid var(--line);transition:.25s}
.drawer-nav a:hover{color:var(--accent)}
.drawer .btn{margin-top:30px;justify-content:center;padding:16px 24px}
.burger i{transition:transform .3s,opacity .3s}
.burger.on i:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger.on i:nth-child(2){opacity:0}
.burger.on i:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.btn:focus-visible,a:focus-visible{outline-offset:2px}