:root{
  --navy:#0B2545;
  --navy-2:#0A1F3D;
  --blue:#1E5BFF;
  --blue-2:#2563EB;
  --cyan:#4DA8FF;
  --sky:#7CC7FF;
  --bg:#FFFFFF;
  --bg-alt:#F5F8FC;
  --ink:#16263D;
  --muted:#5B6B82;
  --line:#E6EDF5;
  --white:#FFFFFF;
  --radius:18px;
  --shadow:0 20px 50px -20px rgba(11,37,69,.25);
  --shadow-sm:0 8px 24px -12px rgba(11,37,69,.18);
  --max:1180px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
ul{list-style:none}

.container{max-width:var(--max);margin:0 auto;padding:0 28px}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .35s ease, box-shadow .35s ease, padding .35s ease;
  padding:16px 0;
}
.site-header.scrolled{
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  box-shadow:0 8px 30px -18px rgba(11,37,69,.35);
  padding:10px 0;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;color:#fff;transition:color .3s;white-space:nowrap;flex-shrink:0}
.site-header.scrolled .brand{color:var(--navy)}
.brand-mark{display:grid;place-items:center}
.brand-text{display:flex;flex-direction:column;line-height:1.15;white-space:nowrap}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px}
.brand-text small{font-size:10.5px;opacity:.72;letter-spacing:.6px;font-weight:500}

.main-nav{display:flex;gap:4px;align-items:center;flex-wrap:nowrap}
.main-nav a{
  color:rgba(255,255,255,.85);
  font-size:14px;font-weight:500;padding:8px 12px;border-radius:8px;
  transition:background .25s,color .25s;
  white-space:nowrap;
}
.site-header.scrolled .main-nav a{color:var(--ink)}
.main-nav a:hover{background:rgba(30,91,255,.1);color:var(--cyan)}
.site-header.scrolled .main-nav a:hover{color:var(--blue)}
.main-nav a.active{color:var(--sky)}
.site-header.scrolled .main-nav a.active{color:var(--blue)}

.nav-toggle{display:none;background:none;border:0;cursor:pointer;width:40px;height:40px;flex-direction:column;justify-content:center;gap:5px;border-radius:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:currentColor;border-radius:2px;transition:.3s;color:#fff}
.site-header.scrolled .nav-toggle span{color:var(--navy)}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  background:linear-gradient(135deg,#0A1F3D 0%,#0B2545 38%,#123B73 74%,#1E5BFF 130%);
  color:#fff;overflow:hidden;padding:120px 0 80px;
}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.grid-lines{
  position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(124,199,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(124,199,255,.06) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 40%,#000 0%,transparent 72%);
  mask-image:radial-gradient(ellipse at 50% 40%,#000 0%,transparent 72%);
}
.glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55}
.glow-a{width:520px;height:520px;background:rgba(30,91,255,.55);top:-140px;right:-80px}
.glow-b{width:460px;height:460px;background:rgba(77,168,255,.4);bottom:-160px;left:-120px}
.hero-wave{position:absolute;bottom:0;left:0;right:0;width:100%;height:220px}
.wave-path{stroke:none}
.hero-content{position:relative;z-index:2}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;
  padding:8px 16px;border-radius:999px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);margin-bottom:26px;letter-spacing:.3px;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:#4DA8FF;box-shadow:0 0 0 4px rgba(77,168,255,.25);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 3px rgba(77,168,255,.25)}50%{box-shadow:0 0 0 8px rgba(77,168,255,.08)}}
.hero-title{font-size:clamp(34px,5.6vw,64px);line-height:1.12;font-weight:800;letter-spacing:-.5px;margin-bottom:22px}
.hero-title em{font-style:normal;background:linear-gradient(100deg,#7CC7FF,#4DA8FF 50%,#A8DCFF);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(16px,2.2vw,21px);color:rgba(255,255,255,.82);font-weight:400;letter-spacing:.5px;margin-bottom:34px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:58px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;font-size:15px;padding:14px 26px;border-radius:12px;
  transition:transform .25s,box-shadow .25s,background .25s;cursor:pointer;border:1px solid transparent;
}
.btn-primary{background:linear-gradient(100deg,#4DA8FF,#1E5BFF);color:#fff;box-shadow:0 12px 30px -10px rgba(30,91,255,.7)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px -10px rgba(30,91,255,.85)}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.25);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--blue);color:var(--blue)}
.btn-outline:hover{background:var(--blue);color:#fff}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:900px}
.stat{display:flex;align-items:baseline;gap:3px;flex-wrap:wrap}
.stat-num{font-size:clamp(28px,3.5vw,44px);font-weight:800;line-height:1}
.stat-unit{font-size:18px;font-weight:700;color:var(--sky)}
.stat-label{display:block;width:100%;font-size:13px;color:rgba(255,255,255,.72);margin-top:8px}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2}
.mouse{display:block;width:26px;height:42px;border:2px solid rgba(255,255,255,.55);border-radius:14px;position:relative}
.wheel{position:absolute;top:7px;left:50%;width:4px;height:9px;background:#4DA8FF;border-radius:3px;transform:translateX(-50%);animation:scroll 1.8s infinite}
@keyframes scroll{0%{opacity:1;transform:translate(-50%,0)}70%{opacity:0;transform:translate(-50%,14px)}100%{opacity:0}}

/* ---------- Section scaffolding ---------- */
.section{padding:100px 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin:0 auto 58px;text-align:center}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:3px;color:var(--blue);text-transform:uppercase;margin-bottom:12px}
.section-title{font-size:clamp(28px,4vw,42px);font-weight:800;color:var(--navy);letter-spacing:-.5px;line-height:1.2}
.section-lead{font-size:17px;color:var(--muted);margin-top:14px}

/* ---------- TOC ---------- */
.toc-section{padding:70px 0 80px;background:var(--bg-alt);border-bottom:1px solid var(--line)}
.toc-section .eyebrow,.toc-section .section-title{color:var(--navy)}
.toc-section .eyebrow{color:var(--blue)}
.toc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:34px}
.toc-item{
  display:flex;align-items:center;gap:16px;padding:20px 22px;background:#fff;border-radius:14px;
  border:1px solid var(--line);font-weight:600;color:var(--ink);transition:.28s;
}
.toc-item .toc-num{font-size:13px;font-weight:800;color:var(--cyan);letter-spacing:1px;font-variant-numeric:tabular-nums}
.toc-item:hover{transform:translateY(-3px);border-color:var(--cyan);box-shadow:var(--shadow-sm)}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:center}
.about-copy .lead{font-size:19px;color:var(--ink);margin-bottom:28px}
.about-copy .lead strong{color:var(--blue)}
.check-list li{position:relative;padding-left:30px;margin-bottom:16px;font-size:15.5px;color:#33445c}
.check-list li::before{
  content:"";position:absolute;left:0;top:5px;width:20px;height:20px;border-radius:50%;
  background:rgba(30,91,255,.1) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%231E5BFF' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/12px no-repeat;
}
.check-list li strong{color:var(--navy)}
.about-visual{display:grid;place-items:center;position:relative;min-height:360px}
.tech-ring{position:relative;width:280px;height:280px;display:grid;place-items:center}
.ring{position:absolute;border-radius:50%;border:1.5px solid rgba(30,91,255,.2)}
.ring-1{inset:0;animation:spin 22s linear infinite}
.ring-2{inset:34px;border-color:rgba(77,168,255,.28);animation:spin 16s linear infinite reverse}
.ring-3{inset:68px;border-color:rgba(30,91,255,.34);border-style:dashed}
.ring-1::before,.ring-2::before{content:"";position:absolute;width:12px;height:12px;border-radius:50%;background:var(--cyan);top:-6px;left:50%;box-shadow:0 0 12px rgba(77,168,255,.8)}
.ring-core{position:relative;width:150px;height:150px;border-radius:50%;background:linear-gradient(135deg,#fff,#EFF5FF);display:grid;place-items:center;text-align:center;box-shadow:var(--shadow-sm);border:1px solid var(--line)}
.ring-core span{font-size:13px;color:var(--muted);margin-top:4px}
@keyframes spin{to{transform:rotate(360deg)}}
.chips{position:absolute;inset:0;pointer-events:none}
.chip{position:absolute;font-size:12.5px;font-weight:600;color:#fff;background:var(--blue);padding:7px 14px;border-radius:999px;box-shadow:var(--shadow-sm);animation:float 5s ease-in-out infinite}
.chip-1{top:12%;left:8%;animation-delay:0s}
.chip-2{top:38%;right:2%;animation-delay:1.2s}
.chip-3{bottom:14%;left:16%;animation-delay:2.3s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
.safety-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:60px}
.safety-item{display:flex;align-items:center;gap:13px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;font-size:14px;color:var(--muted)}
.safety-item .ico{font-size:24px}
.safety-item strong{display:block;color:var(--navy);font-size:15px}

/* ---------- Product versions ---------- */
.version-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:56px}
.version-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;transition:.3s;position:relative;overflow:hidden}
.version-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--cyan)}
.version-card.featured{border-color:var(--cyan);box-shadow:0 22px 50px -24px rgba(30,91,255,.5)}
.version-top{margin-bottom:20px}
.version-tag{display:inline-block;font-size:12px;font-weight:800;padding:4px 11px;border-radius:7px;color:#fff;margin-bottom:14px;letter-spacing:1px}
.tag-4g{background:linear-gradient(100deg,#3B82F6,#1E5BFF)}
.tag-wifi{background:linear-gradient(100deg,#22C1A3,#168F77)}
.tag-ble{background:linear-gradient(100deg,#8B5CF6,#6D3FD0)}
.version-card h3{font-size:23px;font-weight:800;color:var(--navy)}
.version-comm{font-size:13.5px;color:var(--muted);margin-top:3px}
.version-card ul{margin:0 0 18px}
.version-card ul li{position:relative;padding-left:22px;margin-bottom:9px;font-size:14.5px;color:#33445c}
.version-card ul li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;background:var(--cyan)}
.version-use{font-size:13px;color:var(--blue);background:rgba(30,91,255,.07);padding:10px 14px;border-radius:10px;font-weight:600}
.version-battery{display:flex;align-items:center;justify-content:center;gap:10px;background:linear-gradient(100deg,#22C1A3,#168F77);border-radius:12px;padding:12px 14px;margin:2px 0 14px;color:#fff;box-shadow:0 10px 24px -12px rgba(22,143,119,.7)}
.version-battery .battery-num{font-size:28px;font-weight:800;line-height:1;letter-spacing:-.5px;font-variant-numeric:tabular-nums}
.version-battery .battery-num small{font-size:14px;font-weight:700;margin-left:1px}
.version-battery .battery-txt{font-size:12.5px;font-weight:600;line-height:1.25;opacity:.96;text-align:left}
.version-battery .battery-txt b{display:block;font-size:13.5px}
.common-features{margin-bottom:24px}
.common-features h3{font-size:19px;color:var(--navy);margin-bottom:22px}
.common-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.common-item{background:rgba(255,255,255,.7);border:1px dashed var(--line);border-radius:14px;padding:22px;text-align:center}
.common-item .ico{font-size:30px;display:block;margin-bottom:10px}
.common-item strong{display:block;font-size:15px;color:var(--navy);margin-bottom:4px}
.common-item p{font-size:13px;color:var(--muted)}
.gateway-callout{display:flex;align-items:center;gap:24px;background:linear-gradient(100deg,#0B2545,#123B73);border-radius:var(--radius);padding:30px 34px;color:#fff;margin-top:16px}
.gateway-icon{font-size:38px;background:rgba(255,255,255,.1);border-radius:14px;width:66px;height:66px;display:grid;place-items:center;flex:none}
.gateway-copy h3{font-size:20px;margin-bottom:6px}
.gateway-copy p{font-size:14.5px;color:rgba(255,255,255,.8)}
.gateway-copy strong{color:var(--sky)}
.gateway-callout .btn{margin-left:auto;flex:none}

/* ---------- Params ---------- */
.params-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:40px;align-items:stretch}
.params-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.param-row{display:flex;justify-content:space-between;gap:20px;padding:16px 24px;border-bottom:1px solid var(--line);font-size:15px}
.param-row:last-child{border-bottom:0}
.param-label{color:var(--muted);flex:none}
.param-value{font-weight:600;color:var(--navy);text-align:right}
.params-highlight{display:flex;flex-direction:column;gap:24px}
.accuracy-card{background:linear-gradient(135deg,#0B2545,#1E5BFF);border-radius:var(--radius);padding:32px;text-align:center;color:#fff;display:grid;place-items:center}
.accuracy-ring{--p:98;width:160px;height:160px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--sky) calc(var(--p)*1%),rgba(255,255,255,.15) 0)}
.ring-inner{width:126px;height:126px;border-radius:50%;background:#0F2C55;display:grid;place-items:center;align-content:center}
.ring-inner strong{font-size:38px;font-weight:800;line-height:1}
.ring-inner span{font-size:12px;color:rgba(255,255,255,.75);margin-top:4px}
.accuracy-card p{font-size:14px;color:rgba(255,255,255,.85);margin-top:18px;max-width:240px}
.accuracy-card strong{color:var(--sky)}
.protocol-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.protocol-card h4{font-size:16px;color:var(--navy);margin-bottom:16px}
.protocol-tags{display:flex;flex-wrap:wrap;gap:9px}
.protocol-tags span{font-size:13px;font-weight:600;padding:7px 13px;background:rgba(30,91,255,.08);color:var(--blue);border-radius:8px}

/* ---------- Gateway ---------- */
.gateway-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:48px}
.gateway-features h3{font-size:22px;color:var(--navy);margin-bottom:20px}
.gateway-visual{display:grid;place-items:center;min-height:320px}
.hub-node{position:relative;width:280px;height:280px}
.hub-core{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:116px;height:116px;border-radius:50%;background:linear-gradient(135deg,#1E5BFF,#0B2545);display:grid;place-items:center;align-content:center;color:#fff;font-size:24px;z-index:2;box-shadow:0 16px 34px -12px rgba(30,91,255,.7)}
.hub-core span{font-size:13px;margin-top:2px}
.node{position:absolute;width:22px;height:22px;border-radius:50%;background:#fff;border:2px solid var(--cyan);box-shadow:0 0 0 5px rgba(77,168,255,.12);animation:nodePulse 2.6s infinite}
.n1{top:0;left:50%;animation-delay:0s}
.n2{top:22%;right:4%;animation-delay:.4s}
.n3{bottom:18%;right:4%;animation-delay:.8s}
.n4{bottom:0;left:50%;animation-delay:1.2s}
.n5{bottom:18%;left:4%;animation-delay:1.6s}
.n6{top:22%;left:4%;animation-delay:2s}
@keyframes nodePulse{0%,100%{box-shadow:0 0 0 4px rgba(77,168,255,.14)}50%{box-shadow:0 0 0 10px rgba(77,168,255,.03)}}
.eco-title{margin:0 0 22px}
.eco-title h3{font-size:19px;color:var(--navy)}
.eco-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.eco-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;text-align:center;transition:.3s}
.eco-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:var(--cyan)}
.eco-item .ico{font-size:30px;display:block;margin-bottom:10px}
.eco-item strong{display:block;font-size:15px;color:var(--navy)}
.eco-item p{font-size:13px;color:var(--muted)}

/* ---------- Scene map ---------- */
.scene-map{position:relative;min-height:520px;margin:0 auto;max-width:900px}
.scene-map-center{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:170px;height:170px;
  border-radius:50%;background:linear-gradient(135deg,#1E5BFF,#0B2545);color:#fff;
  display:grid;place-items:center;text-align:center;font-size:18px;font-weight:700;line-height:1.4;
  box-shadow:0 24px 60px -20px rgba(30,91,255,.7);z-index:2;
}
.scene-node{
  position:absolute;display:flex;flex-direction:column;align-items:center;gap:6px;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:13px 16px;
  box-shadow:var(--shadow-sm);font-weight:600;color:var(--navy);transition:.3s;z-index:3;font-size:24px;
}
.scene-node:hover{transform:translateY(-5px);border-color:var(--cyan);box-shadow:var(--shadow)}
.scene-node span{font-size:13px}
.s-1{top:4%;left:2%}
.s-2{top:2%;left:50%;transform:translateX(-50%)}
.s-3{top:4%;right:2%}
.s-4{bottom:20%;left:0}
.s-5{bottom:10%;left:22%}
.s-6{bottom:2%;left:50%;transform:translateX(-50%)}
.s-7{bottom:10%;right:22%}
.s-8{bottom:20%;right:0}
.s-9{top:40%;right:-1%}
.scene-node:hover.s-2,.scene-node:hover.s-6{transform:translateX(-50%) translateY(-5px)}

/* ---------- Solutions ---------- */
.solution-block{background:#fff;border:1px solid var(--line);border-radius:20px;padding:40px 42px;margin-bottom:34px;transition:.3s}
.solution-block:hover{box-shadow:var(--shadow-sm)}
.solution-head{display:flex;align-items:center;gap:20px;margin-bottom:26px}
.solution-ico{font-size:36px;width:66px;height:66px;border-radius:16px;background:linear-gradient(135deg,rgba(30,91,255,.1),rgba(77,168,255,.16));display:grid;place-items:center;flex:none}
.solution-head h3{font-size:24px;color:var(--navy)}
.solution-tag{font-size:14px;color:var(--muted);margin-top:2px}
.pain-gain{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.col{padding:24px;border-radius:14px}
.col.pain{background:#FFF7F6;border:1px solid #F8E4E1}
.col.gain{background:#F2F8FF;border:1px solid #DFEDFF}
.col h4{font-size:15px;font-weight:700;margin-bottom:14px;letter-spacing:.5px}
.col.pain h4{color:#D0524A}
.col.gain h4{color:var(--blue)}
.col ul li{position:relative;padding-left:20px;margin-bottom:10px;font-size:14.5px;color:#33445c}
.col ul li::before{content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:50%;background:var(--cyan)}
.col.pain ul li::before{background:#E18A82}
.apply{font-size:13.5px;color:var(--muted);margin-top:12px;padding-top:12px;border-top:1px dashed rgba(0,0,0,.08)}
.apply strong{color:var(--navy)}
.value-line{margin-top:22px;text-align:center;font-size:15.5px;font-weight:600;color:var(--blue);background:rgba(30,91,255,.06);padding:14px;border-radius:12px}

/* ---------- More scenarios ---------- */
.more-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.more-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;transition:.3s;display:flex;flex-direction:column}
.more-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--cyan)}
.more-ico{font-size:32px;width:58px;height:58px;border-radius:14px;background:rgba(30,91,255,.08);display:grid;place-items:center;margin-bottom:16px}
.more-card h4{font-size:17px;color:var(--navy);margin-bottom:10px}
.more-card ul{margin-bottom:14px}
.more-card ul li{position:relative;padding-left:18px;margin-bottom:7px;font-size:13.5px;color:#44556c}
.more-card ul li::before{content:"";position:absolute;left:0;top:7px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.more-use{font-size:12.5px;color:var(--blue);font-weight:600;margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}

/* ---------- Advantages ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:56px}
.adv-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;transition:.3s}
.adv-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-sm);border-color:var(--cyan)}
.adv-ico{font-size:30px;display:block;margin-bottom:14px}
.adv-card h4{font-size:18px;color:var(--navy);margin-bottom:8px}
.adv-card p{font-size:14px;color:var(--muted)}
.compare-title{font-size:19px;color:var(--navy);text-align:center;margin-bottom:24px}
.compare-table{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm)}
.compare-head,.compare-row{display:grid;grid-template-columns:1.1fr 1.2fr 1.2fr;text-align:center}
.compare-head{background:linear-gradient(100deg,#0B2545,#123B73);color:#fff;font-weight:700;font-size:15px}
.compare-head span{padding:16px}
.compare-row span{padding:15px;font-size:14.5px;color:#33445c;border-top:1px solid var(--line)}
.compare-row .hl{background:rgba(30,91,255,.05);color:var(--blue);font-weight:600}
.compare-head .hl{background:rgba(30,91,255,.28);color:#fff}
.compare-row span:first-child{font-weight:600;color:var(--navy)}

/* ---------- Support ---------- */
.support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.support-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;text-align:center;transition:.3s}
.support-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-sm);border-color:var(--cyan)}
.support-item .ico{font-size:32px;display:block;margin-bottom:14px}
.support-item h4{font-size:17px;color:var(--navy);margin-bottom:7px}
.support-item p{font-size:13.5px;color:var(--muted)}

/* ---------- Cases & vision ---------- */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:32px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px 28px;transition:.3s;display:flex;flex-direction:column}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--cyan)}
.case-tag{display:inline-block;align-self:flex-start;font-size:12px;font-weight:700;color:var(--blue);background:rgba(30,91,255,.08);padding:5px 12px;border-radius:999px;margin-bottom:16px}
.case-card h4{font-size:19px;color:var(--navy);margin-bottom:10px}
.case-card p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:18px}
.case-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}
.case-meta li{font-size:12.5px;color:#33445c;background:var(--bg-alt);padding:6px 11px;border-radius:8px;border:1px solid var(--line)}
.vision-panel{background:linear-gradient(120deg,#0B2545,#123B73);border-radius:20px;padding:40px 42px;color:#fff;display:flex;gap:40px;align-items:center;justify-content:space-between}
.vision-copy{max-width:600px}
.vision-copy h3{font-size:22px;margin-bottom:12px;color:var(--sky)}
.vision-copy p{font-size:15px;color:rgba(255,255,255,.85);line-height:1.8}
.vision-points{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;max-width:340px}
.vision-points span{font-size:14px;font-weight:600;padding:11px 20px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18)}

/* ---------- Product visual ---------- */
.product-visual{background:linear-gradient(135deg,#FFFFFF,#EDF4FF);border:1px solid var(--line);border-radius:22px;padding:38px 42px;margin-bottom:52px;overflow:hidden;box-shadow:var(--shadow-sm)}
.product-visual-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:18px;flex-wrap:wrap}
.product-visual-head h3{font-size:20px;color:var(--navy)}
.product-visual-head span{font-size:13px;color:var(--muted)}
.product-stage{position:relative;display:flex;align-items:center;justify-content:center}
.product-stage svg{width:100%;height:auto}
.product-caption{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:6px}
.product-caption span{font-size:12.5px;color:var(--muted);background:#fff;border:1px solid var(--line);padding:6px 13px;border-radius:999px}

/* ---------- Installation diagram ---------- */
.install-diagram{background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px 36px;margin-top:32px;box-shadow:var(--shadow-sm)}
.install-diagram-head{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.install-diagram-head h3{font-size:19px;color:var(--navy)}
.install-diagram-head .ico{font-size:24px}
.install-diagram p.lead{font-size:14px;color:var(--muted);margin-bottom:24px}
.install-stack{display:flex;flex-direction:column;gap:0;max-width:720px;margin:0 auto}
.install-layer{position:relative;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:600;color:var(--navy)}
.layer-person{height:64px;background:linear-gradient(180deg,#EAF3FF,#D9E9FF);border:1px solid #C7DEFF;font-size:30px}
.layer-mattress{height:78px;background:linear-gradient(180deg,#FFF,#EEF1F6);border:1px solid var(--line);border-radius:16px;margin:2px 0}
.layer-sensor{height:42px;background:linear-gradient(180deg,#4DA8FF,#1E5BFF);border:1px solid #1E5BFF;color:#fff;font-size:13px;box-shadow:0 0 0 6px rgba(30,91,255,.12);margin:0}
.layer-frame{height:34px;background:linear-gradient(180deg,#D7DEE8,#C4CDDA);border:1px solid #B9C3D2;color:var(--muted);font-size:12px;border-radius:8px;margin-top:2px}
.install-note{margin-top:22px;display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.install-note span{font-size:13px;color:var(--muted);background:var(--bg-alt);border:1px solid var(--line);padding:7px 14px;border-radius:999px}

/* ---------- Platform section (dashboard + architecture) ---------- */
.platform-block{margin-bottom:56px}
.platform-block:last-child{margin-bottom:0}
.platform-subtitle{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.platform-subtitle .p-ico{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,rgba(30,91,255,.1),rgba(77,168,255,.16));display:grid;place-items:center;font-size:24px;flex:none}
.platform-subtitle h3{font-size:21px;color:var(--navy)}
.platform-subtitle p{font-size:13.5px;color:var(--muted);margin-top:2px}

/* Dashboard mockup */
.dashboard{border-radius:22px;overflow:hidden;background:#07182E;color:#E6F0FF;box-shadow:0 30px 70px -30px rgba(7,24,46,.6);border:1px solid rgba(77,168,255,.22)}
.dash-topbar{display:flex;align-items:center;gap:14px;padding:14px 20px;background:linear-gradient(180deg,#0B2545,#081D38);border-bottom:1px solid rgba(124,199,255,.14)}
.dash-topbar .dash-logo{display:flex;align-items:center;gap:9px;font-weight:700;font-size:14px}
.dash-topbar .dash-logo .dot{width:9px;height:9px;border-radius:50%;background:#4DA8FF;box-shadow:0 0 0 4px rgba(77,168,255,.2)}
.dash-topbar .dash-title{margin-left:auto;font-size:13px;color:rgba(230,240,255,.72);letter-spacing:.5px}
.dash-topbar .dash-time{font-variant-numeric:tabular-nums;font-size:13px;color:#7CC7FF}
.dash-body{display:grid;grid-template-columns:220px 1fr 250px;gap:0;min-height:480px}
.dash-col{padding:18px}
.dash-col.left{border-right:1px solid rgba(124,199,255,.12)}
.dash-col.right{border-left:1px solid rgba(124,199,255,.12)}
.dash-col-title{font-size:12px;font-weight:700;letter-spacing:1.5px;color:#7CC7FF;margin-bottom:14px}
.bed-list{display:flex;flex-direction:column;gap:10px}
.bed-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;background:rgba(255,255,255,.04);border:1px solid rgba(124,199,255,.08);font-size:13px}
.bed-item .bd{width:8px;height:8px;border-radius:50%;flex:none}
.bed-item .bd.ok{background:#22C55E;box-shadow:0 0 0 3px rgba(34,197,94,.18)}
.bed-item .bd.warn{background:#F5A623;box-shadow:0 0 0 3px rgba(245,166,35,.18)}
.bed-item .bd.alert{background:#FF5C5C;box-shadow:0 0 0 3px rgba(255,92,92,.18)}
.bed-item .bmeta{margin-left:auto;text-align:right;font-size:11.5px;color:rgba(230,240,255,.55)}
.bed-item .bmeta b{display:block;font-size:13px;color:#E6F0FF;font-variant-numeric:tabular-nums}
.dash-main{display:flex;flex-direction:column;gap:14px}
.dash-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.kpi{padding:14px;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid rgba(124,199,255,.1)}
.kpi .k-label{font-size:11.5px;color:rgba(230,240,255,.6)}
.kpi .k-val{font-size:24px;font-weight:800;font-variant-numeric:tabular-nums;margin-top:2px}
.kpi .k-val small{font-size:13px;font-weight:500;color:rgba(230,240,255,.6)}
.kpi .k-val.c-cyan{color:#22D3EE}.kpi .k-val.c-green{color:#22C55E}.kpi .k-val.c-amber{color:#F5A623}
.wave-panel{background:rgba(255,255,255,.04);border:1px solid rgba(124,199,255,.1);border-radius:14px;padding:16px 18px}
.wave-panel .wp-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.wave-panel .wp-head b{font-size:14px}
.wave-panel .wp-head span{font-size:12px;color:rgba(230,240,255,.55)}
.wave-panel svg{width:100%;height:78px;display:block}
.wave-grid{stroke:rgba(124,199,255,.14);stroke-width:1}
.wave-line{fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.wave-hr{stroke:#22D3EE;filter:drop-shadow(0 0 4px rgba(34,211,238,.5))}
.wave-br{stroke:#4DA8FF;filter:drop-shadow(0 0 4px rgba(77,168,255,.5))}
.dash-footer{display:flex;gap:12px;align-items:center;padding:0 18px 18px}
.dash-footer .legend{display:flex;gap:16px;font-size:12px;color:rgba(230,240,255,.6)}
.dash-footer .legend i{display:inline-block;width:14px;height:3px;border-radius:2px;vertical-align:middle;margin-right:6px}
.alert-list{display:flex;flex-direction:column;gap:10px}
.alert-item{padding:11px 12px;border-radius:10px;background:rgba(255,92,92,.08);border:1px solid rgba(255,92,92,.2);font-size:12.5px}
.alert-item.warn{background:rgba(245,166,35,.08);border-color:rgba(245,166,35,.22)}
.alert-item .at{display:block;font-size:11px;color:rgba(230,240,255,.5);margin-top:3px}
.alert-item b{color:#FF9D9D}.alert-item.warn b{color:#FFC876}

/* Architecture diagram */
.arch-diagram{background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px 36px;box-shadow:var(--shadow-sm)}
.arch-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;align-items:stretch}
.arch-layer{position:relative;padding:18px 16px;text-align:center}
.arch-layer .al-tag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:1px;color:var(--blue);background:rgba(30,91,255,.08);padding:4px 11px;border-radius:999px;margin-bottom:14px}
.arch-node{background:var(--bg-alt);border:1px solid var(--line);border-radius:12px;padding:15px 12px;margin-bottom:10px;font-size:14px;font-weight:600;color:var(--navy);min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px}
.arch-node small{font-size:11.5px;font-weight:500;color:var(--muted)}
.arch-node.hub{background:linear-gradient(135deg,#0B2545,#123B73);color:#fff;border-color:transparent}
.arch-node.hub small{color:rgba(255,255,255,.7)}
.arch-arrow{display:flex;align-items:center;justify-content:center;color:var(--cyan);font-size:20px;height:100%}
.arch-protocols{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-top:22px;padding-top:20px;border-top:1px dashed var(--line)}
.arch-protocols span{font-size:12.5px;color:var(--muted);background:var(--bg-alt);border:1px solid var(--line);padding:6px 13px;border-radius:999px}
.arch-protocols b{color:var(--blue);font-weight:600}

/* ---------- Footer ---------- */
.site-footer{position:relative;background:linear-gradient(160deg,#081A33,#0B2545 55%,#123B73);color:#fff;padding:90px 0 50px;overflow:hidden}
.footer-bg{position:absolute;inset:0;background-image:radial-gradient(rgba(124,199,255,.12) 1px,transparent 1px);background-size:28px 28px;-webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000,transparent 70%);mask-image:radial-gradient(ellipse at 50% 0%,#000,transparent 70%)}
.footer-content{position:relative;z-index:2;text-align:center}
.footer-brand .brand{justify-content:center;color:#fff;margin-bottom:26px}
.footer-claim{font-size:clamp(22px,3.4vw,34px);font-weight:700;letter-spacing:-.3px;max-width:760px;margin:0 auto 28px;line-height:1.4}
.footer-meta{display:flex;justify-content:center;gap:22px;flex-wrap:wrap;font-size:15px;color:rgba(255,255,255,.82);margin-bottom:34px}
.footer-meta a{color:var(--sky);font-weight:600;border-bottom:1px solid rgba(124,199,255,.4);padding-bottom:1px}
.footer-meta a:hover{color:#fff}
.copyright{font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- Reveal animations ---------- */
.reveal{transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.js .reveal{opacity:0;transform:translateY(28px)}
.js .reveal.in{opacity:1;transform:none}

/* ---------- Language switcher ---------- */
.lang-switch{display:flex;align-items:center}
.lang-select{appearance:none;-webkit-appearance:none;background-color:transparent;border:1px solid currentColor;border-radius:9px;color:inherit;font-family:var(--font);font-size:13px;font-weight:600;padding:6px 28px 6px 11px;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%234DA8FF' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 9px center}
.site-header:not(.scrolled) .lang-select{color:#fff;border-color:rgba(255,255,255,.45)}
.site-header:not(.scrolled) .lang-select option{color:var(--ink)}
.site-header.scrolled .lang-select{color:var(--navy);border-color:var(--line)}
.lang-select:hover{border-color:var(--cyan)}

/* ---------- RTL support (Arabic, Urdu) ---------- */
[dir="rtl"] body{direction:rtl;text-align:right}
[dir="rtl"] .hero-content,[dir="rtl"] .section-head,[dir="rtl"] .about-copy,[dir="rtl"] .product-info{text-align:right}
[dir="rtl"] .check-list li,[dir="rtl"] .feature-list li,[dir="rtl"] .scenario-card ul li,
[dir="rtl"] .more-card ul li,[dir="rtl"] .col ul li,[dir="rtl"] .case-meta li{padding-left:0;padding-right:20px}
[dir="rtl"] .check-list li::before{left:auto;right:0}
[dir="rtl"] .feature-list li::before,[dir="rtl"] .scenario-card ul li::before,
[dir="rtl"] .more-card ul li::before,[dir="rtl"] .col ul li::before{left:auto;right:0}
[dir="rtl"] .hero-actions,[dir="rtl"] .hero-stats{direction:rtl}
[dir="rtl"] .param-row{direction:rtl}
[dir="rtl"] .product-block .product-info{text-align:right}

@media(max-width:600px){
  .lang-switch{margin-left:auto}
  .lang-select{font-size:12px;padding:5px 24px 5px 9px}
}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:min(78vw,340px);
    flex-direction:column;align-items:stretch;gap:4px;padding:92px 24px 30px;
    background:var(--navy);transform:translateX(100%);transition:transform .35s ease;
  }
  .main-nav.open{transform:translateX(0)}
  .main-nav a{color:#fff!important;font-size:16px;padding:13px 14px}
  .main-nav a:hover{background:rgba(255,255,255,.08);color:var(--cyan)!important}
  .nav-toggle{display:flex}
  .about-grid,.gateway-grid,.params-grid,.pain-gain{grid-template-columns:1fr}
  .about-visual{min-height:320px}
  .version-grid,.eco-grid,.support-grid,.adv-grid,.cases-grid{grid-template-columns:repeat(2,1fr)}
  .more-grid{grid-template-columns:repeat(2,1fr)}
  .vision-panel{flex-direction:column;align-items:flex-start;gap:24px}
  .vision-points{justify-content:flex-start;max-width:none}
  .safety-strip{grid-template-columns:repeat(2,1fr)}
  .toc-grid{grid-template-columns:repeat(2,1fr)}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:26px}
  .gateway-callout{flex-direction:column;text-align:center}
  .gateway-callout .btn{margin-left:0}
}
@media(max-width:600px){
  .container{padding:0 18px}
  .section{padding:70px 0}
  .hero{padding:110px 0 70px}
  .hero-title{font-size:32px}
  .version-grid,.eco-grid,.support-grid,.adv-grid,.common-grid,.safety-strip,.toc-grid,.more-grid,.cases-grid{grid-template-columns:1fr}
  .scene-map{min-height:640px}
  .scene-node{padding:10px 12px}
  .scene-node span{font-size:12px}
  .s-9{top:auto;right:auto;top:30%;left:0}
  .s-1{top:0;left:0}
  .s-3{top:0;right:0}
  .s-2{top:12%}
  .s-4{bottom:28%;left:0}
  .s-8{bottom:28%;right:0}
  .s-5{bottom:38%;left:12%}
  .s-7{bottom:38%;right:12%}
  .s-6{bottom:12%}
  .compare-head,.compare-row{grid-template-columns:1fr 1.3fr 1.3fr}
  .compare-head span,.compare-row span{font-size:13px;padding:13px 8px}
  .solution-block{padding:28px 20px}
  .footer-claim{font-size:22px}
}

@media(max-width:960px){
  .dash-body{grid-template-columns:1fr}
  .dash-col.left{border-right:0;border-bottom:1px solid rgba(124,199,255,.12)}
  .dash-col.right{border-left:0;border-top:1px solid rgba(124,199,255,.12)}
  .dash-kpis{grid-template-columns:repeat(2,1fr)}
  .arch-flow{grid-template-columns:repeat(2,1fr);row-gap:8px}
  .arch-arrow{transform:rotate(90deg);height:28px}
}
@media(max-width:600px){
  .product-visual{padding:24px 18px}
  .product-visual-head{flex-direction:column;align-items:flex-start;gap:4px}
  .install-diagram{padding:24px 18px}
  .arch-flow{grid-template-columns:1fr}
  .arch-arrow{transform:rotate(90deg);height:24px}
  .dashboard{border-radius:16px}
  .dash-topbar{flex-wrap:wrap}
  .dash-topbar .dash-title{margin-left:0;width:100%}
  .dash-kpis{grid-template-columns:repeat(2,1fr)}
  .kpi .k-val{font-size:20px}
}