:root {
  --navy-950: #04121e;
  --navy-900: #071b2b;
  --navy-800: #0b2a40;
  --blue: #2d7ef7;
  --cyan: #45d7d2;
  --cyan-soft: #a6f7ef;
  --ink: #102637;
  --muted: #607384;
  --line: #dce7ee;
  --surface: #f4f8fa;
  --white: #ffffff;
  --shadow: 0 20px 60px rgba(12, 43, 64, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.section { padding: 112px 0; }
.section-dark { background: var(--navy-950); color: var(--white); }
.section-muted { background: var(--surface); }
.page-noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: .018;
  z-index: 999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E");
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: background .25s ease, box-shadow .25s ease, backdrop-filter .25s ease;
}
.site-header.scrolled {
  background: rgba(4, 18, 30, .88);
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 30px rgba(0,0,0,.16);
}
.nav-wrap { height: 82px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--white); }
.brand-mark { width: 44px; height: 44px; color: var(--cyan); }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 20px; letter-spacing: .14em; }
.brand-text small { font-size: 8px; letter-spacing: .2em; opacity: .66; margin-top: 5px; }
.site-nav { display: flex; align-items: center; gap: 34px; }
.site-nav a { color: rgba(255,255,255,.78); font-size: 14px; transition: color .2s ease; }
.site-nav a:hover { color: var(--cyan-soft); }
.site-nav .nav-contact { border: 1px solid rgba(69,215,210,.5); color: var(--cyan-soft); padding: 9px 17px; border-radius: 999px; }
.menu-toggle { display: none; width: 42px; height: 42px; border: 0; background: transparent; padding: 8px; }
.menu-toggle span { display: block; height: 2px; background: #fff; margin: 5px 0; transition: transform .2s ease, opacity .2s ease; }

.hero { min-height: 840px; position: relative; overflow: hidden; display: flex; align-items: center; padding-top: 88px; }
.hero-grid, .contact-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(95, 214, 210, .05) 1px, transparent 1px), linear-gradient(90deg, rgba(95, 214, 210, .05) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.8), transparent 90%);
}
.hero-glow { position: absolute; border-radius: 50%; filter: blur(2px); }
.hero-glow-one { width: 620px; height: 620px; right: -130px; top: 70px; background: radial-gradient(circle, rgba(45,126,247,.18), rgba(45,126,247,0) 68%); }
.hero-glow-two { width: 520px; height: 520px; left: -260px; bottom: -180px; background: radial-gradient(circle, rgba(69,215,210,.12), rgba(69,215,210,0) 70%); }
.hero-layout { position: relative; z-index: 2; display: grid; grid-template-columns: 1.04fr .96fr; gap: 70px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: var(--cyan-soft); font-size: 12px; letter-spacing: .22em; font-weight: 700; text-transform: uppercase; }
.eyebrow span { display: inline-block; width: 30px; height: 2px; background: var(--cyan); }
.eyebrow.dark { color: #2f7180; }
.hero h1 { margin: 26px 0 24px; font-size: clamp(52px, 6vw, 82px); line-height: 1.08; letter-spacing: -.035em; }
.hero h1 em { font-style: normal; color: transparent; background: linear-gradient(90deg, var(--cyan-soft), #75b7ff); -webkit-background-clip: text; background-clip: text; }
.hero-lead { max-width: 690px; font-size: 18px; color: rgba(255,255,255,.68); margin-bottom: 34px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: 7px; font-size: 14px; font-weight: 700; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: var(--navy-950); background: linear-gradient(135deg, var(--cyan-soft), var(--cyan)); }
.btn-ghost { border: 1px solid rgba(255,255,255,.2); color: #fff; background: rgba(255,255,255,.02); }
.btn-ghost:hover { border-color: rgba(69,215,210,.65); }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.hero-tags span { color: rgba(255,255,255,.56); border-left: 2px solid rgba(69,215,210,.65); padding: 3px 12px; font-size: 12px; background: rgba(255,255,255,.025); }
.hero-visual { position: relative; min-height: 550px; display: flex; align-items: center; justify-content: center; }
.orbit { position: absolute; border: 1px solid rgba(69,215,210,.18); border-radius: 50%; }
.orbit-one { width: 450px; height: 450px; animation: spin 22s linear infinite; }
.orbit-two { width: 320px; height: 320px; border-style: dashed; animation: spinBack 18s linear infinite; }
.orbit-one::before, .orbit-two::before { content: ""; position: absolute; width: 8px; height: 8px; background: var(--cyan); border-radius: 50%; box-shadow: 0 0 18px var(--cyan); top: 30px; left: 78px; }
.device-card { position: relative; width: 258px; height: 390px; background: linear-gradient(145deg, #f9feff, #dfe8ed); border-radius: 20px; box-shadow: 0 35px 80px rgba(0,0,0,.42), inset 0 0 0 1px rgba(255,255,255,.8); padding: 28px 24px; z-index: 3; transform: perspective(1000px) rotateY(-8deg) rotateX(2deg); }
.device-topline { width: 50px; height: 4px; background: #9fb2bd; border-radius: 999px; margin: 0 auto 18px; }
.device-logo { color: #17394b; font-weight: 700; letter-spacing: .14em; font-size: 13px; text-align: center; }
.device-screen { background: #082335; border-radius: 10px; margin-top: 24px; padding: 15px; box-shadow: inset 0 0 0 1px rgba(89,228,218,.15); }
.screen-title { color: #9ef5ec; font-size: 11px; }
.waveform { height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 4px; }
.waveform span { display: block; width: 3px; border-radius: 5px; background: linear-gradient(to top, #2d7ef7, #6df5e7); animation: wave 1.3s ease-in-out infinite; }
.waveform span:nth-child(1) { height: 16px; } .waveform span:nth-child(2) { height: 30px; animation-delay: .1s; } .waveform span:nth-child(3) { height: 48px; animation-delay: .2s; } .waveform span:nth-child(4) { height: 22px; animation-delay: .3s; } .waveform span:nth-child(5) { height: 40px; animation-delay: .4s; } .waveform span:nth-child(6) { height: 18px; animation-delay: .5s; } .waveform span:nth-child(7) { height: 34px; animation-delay: .6s; } .waveform span:nth-child(8) { height: 12px; animation-delay: .7s; }
.screen-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.screen-metrics div { padding: 8px; background: rgba(255,255,255,.04); border-radius: 6px; }
.screen-metrics small { display: block; color: rgba(255,255,255,.42); font-size: 9px; }
.screen-metrics strong { color: #fff; font-size: 12px; }
.device-status { margin: 21px 0; display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 10px; color: #526978; }
.device-status span { width: 7px; height: 7px; background: #35c899; border-radius: 50%; box-shadow: 0 0 10px rgba(53,200,153,.8); }
.device-speaker { display: grid; grid-template-columns: repeat(4, 5px); justify-content: center; gap: 6px; }
.device-speaker i { width: 5px; height: 5px; background: #a6b4bc; border-radius: 50%; }
.sensor-chip { position: absolute; z-index: 4; display: grid; grid-template-columns: auto 1fr; column-gap: 9px; align-items: center; min-width: 145px; padding: 12px 14px; background: rgba(8,35,53,.86); border: 1px solid rgba(98,231,221,.22); border-radius: 9px; box-shadow: 0 14px 34px rgba(0,0,0,.26); backdrop-filter: blur(10px); }
.sensor-chip i { grid-row: 1 / 3; width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.sensor-chip span { font-size: 10px; color: rgba(255,255,255,.5); line-height: 1.2; }
.sensor-chip b { font-size: 13px; color: #fff; line-height: 1.25; }
.chip-one { left: 0; top: 110px; } .chip-two { right: -8px; top: 166px; } .chip-three { left: 32px; bottom: 72px; }
.visual-caption { position: absolute; bottom: 8px; font-size: 10px; color: rgba(255,255,255,.33); letter-spacing: .08em; }
.hero-bottom-line { position: absolute; bottom: 0; width: 100%; height: 1px; background: linear-gradient(90deg, transparent, rgba(69,215,210,.6), transparent); }

.split-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; align-items: start; }
.section-heading h2 { margin: 18px 0 16px; font-size: clamp(36px, 4vw, 54px); line-height: 1.18; letter-spacing: -.02em; }
.section-heading > p { color: var(--muted); max-width: 640px; margin: 0; }
.section-heading.center { text-align: center; max-width: 760px; margin: 0 auto 54px; }
.section-heading.center .eyebrow { justify-content: center; }
.about-content > p { color: #4f6575; font-size: 17px; margin: 0 0 20px; }
.about-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 36px; }
.about-metrics div { padding: 20px 16px; border-top: 2px solid var(--cyan); background: var(--surface); }
.about-metrics strong { display: block; color: var(--ink); margin-bottom: 8px; }
.about-metrics span { color: var(--muted); font-size: 12px; }

.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service-card { min-height: 265px; padding: 30px; background: #fff; border: 1px solid #e5edf2; border-radius: 12px; box-shadow: 0 8px 30px rgba(16,38,55,.045); transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease; }
.service-card:hover { transform: translateY(-6px); border-color: rgba(45,126,247,.28); box-shadow: var(--shadow); }
.icon-wrap { width: 46px; height: 46px; border-radius: 10px; background: linear-gradient(135deg, rgba(69,215,210,.15), rgba(45,126,247,.10)); display: grid; place-items: center; margin-bottom: 30px; }
.icon-wrap svg { width: 27px; height: 27px; fill: none; stroke: #167e91; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.service-card h3 { font-size: 19px; margin: 0 0 12px; }
.service-card p { color: var(--muted); font-size: 14px; margin: 0; }
.service-card-accent { display: flex; flex-direction: column; justify-content: space-between; color: #fff; background: linear-gradient(145deg, #0a2e44, #0b5b67); border-color: transparent; }
.service-card-accent p { color: rgba(255,255,255,.64); }
.service-card-accent a { color: var(--cyan-soft); font-weight: 700; font-size: 14px; }
.service-card-accent a span { margin-left: 6px; }
.mini-label { font-size: 10px; letter-spacing: .18em; color: var(--cyan-soft); }

.product-section { position: relative; overflow: hidden; }
.product-section::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 18% 50%, rgba(45,126,247,.16), transparent 32%); }
.product-layout { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 95px; align-items: center; }
.product-panel { position: relative; max-width: 500px; padding: 26px; border: 1px solid rgba(88,219,210,.18); border-radius: 14px; background: linear-gradient(145deg, rgba(11,42,64,.82), rgba(4,18,30,.96)); box-shadow: 0 35px 80px rgba(0,0,0,.32); }
.product-panel::after { content: ""; position: absolute; inset: 10px; border: 1px solid rgba(255,255,255,.035); border-radius: 10px; pointer-events: none; }
.panel-head { display: flex; justify-content: space-between; align-items: center; color: rgba(255,255,255,.72); font-size: 13px; }
.panel-head i { font-style: normal; color: #70f3df; font-size: 10px; }
.panel-house { height: 290px; display: grid; place-items: center; position: relative; overflow: hidden; }
.panel-house svg { width: 260px; }
.scan-line { position: absolute; width: 78%; height: 1px; background: linear-gradient(90deg, transparent, #6df5e7, transparent); box-shadow: 0 0 14px #6df5e7; animation: scan 4s ease-in-out infinite; }
.panel-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.panel-kpis div { padding: 13px; border-radius: 8px; background: rgba(255,255,255,.04); }
.panel-kpis b { display: block; color: #fff; font-size: 15px; }
.panel-kpis span { color: rgba(255,255,255,.42); font-size: 10px; }
.product-copy h2 { font-size: clamp(38px, 4vw, 56px); line-height: 1.15; margin: 20px 0 24px; }
.product-copy > p { color: rgba(255,255,255,.63); font-size: 16px; }
.feature-list { list-style: none; padding: 0; margin: 30px 0; }
.feature-list li { display: grid; grid-template-columns: 48px 1fr; gap: 14px; padding: 17px 0; border-bottom: 1px solid rgba(255,255,255,.08); }
.feature-list li > span { color: var(--cyan); font-size: 11px; padding-top: 4px; }
.feature-list strong { display: block; font-size: 16px; margin-bottom: 3px; }
.feature-list p { margin: 0; color: rgba(255,255,255,.48); font-size: 13px; }
.tech-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.tech-badges span { padding: 6px 11px; border: 1px solid rgba(109,245,231,.2); border-radius: 999px; color: rgba(255,255,255,.58); font-size: 11px; }

.scenario-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 52px; }
.scenario-card { position: relative; min-height: 310px; padding: 26px; border: 1px solid var(--line); background: #fff; overflow: hidden; }
.scenario-card::after { content: ""; position: absolute; width: 120px; height: 120px; right: -60px; bottom: -60px; background: radial-gradient(circle, rgba(69,215,210,.16), transparent 70%); }
.scenario-no { color: #a7b7c2; font-size: 11px; letter-spacing: .12em; }
.scenario-icon { width: 86px; height: 86px; margin: 34px 0 26px; position: relative; }
.scenario-icon::before, .scenario-icon::after { content: ""; position: absolute; }
.quake::before { left: 0; top: 42px; width: 86px; height: 2px; background: #67cfc9; }
.quake::after { left: 2px; top: 18px; width: 82px; height: 50px; clip-path: polygon(0 52%, 12% 52%, 20% 24%, 30% 78%, 42% 41%, 53% 55%, 64% 12%, 76% 74%, 87% 50%, 100% 50%, 100% 56%, 90% 56%, 77% 84%, 64% 24%, 54% 65%, 43% 52%, 30% 91%, 20% 38%, 14% 59%, 0 59%); background: linear-gradient(90deg, #2d7ef7, #45d7d2); }
.flood::before { inset: 12px 8px 15px; border: 3px solid #4dcfc8; border-radius: 50% 50% 55% 45%; transform: rotate(45deg); }
.flood::after { left: 8px; right: 8px; bottom: 8px; height: 26px; background: repeating-radial-gradient(ellipse at 12px 100%, transparent 0 10px, rgba(45,126,247,.65) 11px 13px, transparent 14px 22px); }
.slope::before { left: 7px; bottom: 12px; width: 74px; height: 58px; background: linear-gradient(145deg, transparent 0 37%, #76cfc4 38% 41%, transparent 42%), linear-gradient(145deg, transparent 0 53%, #2d7ef7 54% 58%, transparent 59%); border-left: 3px solid #5fc8c0; transform: skewX(-14deg); }
.slope::after { right: 4px; top: 12px; width: 11px; height: 11px; border-radius: 50%; background: #2d7ef7; box-shadow: -17px 15px 0 #45d7d2, -5px 32px 0 #2d7ef7; }
.building::before { left: 17px; top: 6px; width: 52px; height: 72px; border: 3px solid #54cbc3; background: repeating-linear-gradient(to bottom, transparent 0 13px, rgba(45,126,247,.18) 14px 16px); }
.building::after { left: 26px; top: 17px; width: 8px; height: 8px; background: #2d7ef7; box-shadow: 25px 0 #2d7ef7, 0 18px #45d7d2, 25px 18px #45d7d2, 0 36px #2d7ef7, 25px 36px #2d7ef7; }
.scenario-card h3 { margin: 0 0 11px; font-size: 18px; }
.scenario-card p { margin: 0; color: var(--muted); font-size: 13px; }

.flow-section { padding-top: 92px; padding-bottom: 92px; }
.flow-wrap { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; gap: 18px; align-items: center; }
.flow-wrap > i { font-style: normal; color: #8eacb8; }
.flow-item { padding: 24px 18px; background: #fff; border: 1px solid #dfeaf0; text-align: center; border-radius: 10px; }
.flow-item span { display: block; color: var(--blue); font-size: 10px; letter-spacing: .12em; }
.flow-item b { display: block; margin: 8px 0 4px; }
.flow-item small { color: var(--muted); }

.advantage-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; }
.advantage-list article { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.advantage-list article > span { color: var(--blue); font-size: 11px; letter-spacing: .12em; padding-top: 5px; }
.advantage-list h3 { margin: 0 0 8px; font-size: 19px; }
.advantage-list p { color: var(--muted); margin: 0; font-size: 14px; }

.contact-section { position: relative; overflow: hidden; padding: 94px 0; }
.contact-section::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 82% 10%, rgba(45,126,247,.18), transparent 34%); }
.contact-inner { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 80px; align-items: center; }
.contact-inner h2 { font-size: clamp(34px, 4vw, 52px); line-height: 1.2; margin: 18px 0; }
.contact-inner p { color: rgba(255,255,255,.58); }
.contact-card { padding: 30px; background: rgba(255,255,255,.05); border: 1px solid rgba(109,245,231,.16); border-radius: 12px; backdrop-filter: blur(10px); }
.contact-card span { display: block; color: rgba(255,255,255,.48); font-size: 12px; }
.contact-card a { display: block; margin: 12px 0; font-size: clamp(22px, 3vw, 32px); color: var(--cyan-soft); font-weight: 700; }
.contact-card small { color: rgba(255,255,255,.45); }
.site-footer { background: #020b12; color: rgba(255,255,255,.46); padding: 34px 0; }
.footer-inner { display: flex; justify-content: space-between; gap: 30px; align-items: center; }
.footer-brand { display: flex; flex-direction: column; }
.footer-brand strong { color: rgba(255,255,255,.78); font-size: 14px; }
.footer-brand span, .footer-right { font-size: 11px; }
.footer-right { display: flex; flex-direction: column; text-align: right; gap: 4px; }
.footer-right a { color: rgba(255,255,255,.75); }
.footer-filing { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 18px; font-size: 12px; }
.footer-filing a { color: rgba(255,255,255,.68); }
.footer-filing a:hover { color: var(--cyan-soft); }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes spinBack { to { transform: rotate(-360deg); } }
@keyframes wave { 0%,100% { transform: scaleY(.62); opacity: .55; } 50% { transform: scaleY(1); opacity: 1; } }
@keyframes scan { 0%,100% { top: 24%; opacity: .25; } 50% { top: 73%; opacity: 1; } }

@media (max-width: 1000px) {
  .hero { min-height: auto; padding: 150px 0 100px; }
  .hero-layout, .product-layout, .split-layout, .advantage-layout, .contact-inner { grid-template-columns: 1fr; }
  .hero-layout { gap: 40px; }
  .hero-copy { max-width: 720px; }
  .hero-visual { min-height: 520px; }
  .product-layout { gap: 56px; }
  .product-panel { margin: 0 auto; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-wrap { grid-template-columns: 1fr 1fr; }
  .flow-wrap > i { display: none; }
  .contact-inner { gap: 34px; }
}

@media (max-width: 760px) {
  .container { width: min(100% - 32px, 1180px); }
  .section { padding: 78px 0; }
  .nav-wrap { height: 72px; }
  .brand-text strong { font-size: 17px; }
  .brand-text small { display: none; }
  .brand-mark { width: 38px; height: 38px; }
  .menu-toggle { display: block; position: relative; z-index: 102; }
  .site-nav { position: fixed; inset: 0; background: rgba(4,18,30,.97); display: flex; flex-direction: column; justify-content: center; gap: 25px; transform: translateX(100%); transition: transform .25s ease; }
  .site-nav.open { transform: translateX(0); }
  .site-nav a { font-size: 18px; }
  .menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle.active span:nth-child(2) { opacity: 0; }
  .menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero { padding-top: 125px; }
  .hero h1 { font-size: 47px; }
  .hero-lead { font-size: 16px; }
  .hero-visual { transform: scale(.86); margin: -25px -40px -45px; }
  .sensor-chip { min-width: 132px; }
  .chip-one { left: 8px; } .chip-two { right: 8px; } .chip-three { left: 26px; }
  .section-heading h2 { font-size: 38px; }
  .about-metrics, .service-grid, .scenario-grid { grid-template-columns: 1fr; }
  .service-card { min-height: auto; }
  .scenario-card { min-height: 280px; }
  .flow-wrap { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-right { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}