:root{
  --navy:#0D1B3D;
  --navy-2:#123C67;
  --teal:#0F7F8C;
  --teal-2:#15A3A7;
  --gold:#D4A017;
  --ink:#18243F;
  --muted:#64748B;
  --line:#D8E2EF;
  --soft:#F7FAFC;
  --card:#FFFFFF;
  --shadow:0 16px 42px rgba(13,27,61,.10);
  --radius:18px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;color:var(--ink);font-family:"Inter","Source Han Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:#fff;line-height:1.65;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;height:auto}
.container{width:min(1180px,92vw);margin:0 auto}

.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{min-height:92px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:12px;color:var(--navy);min-width:0;flex-shrink:0}
.brand img{width:76px;height:76px;object-fit:contain;flex:0 0 auto}
.brand strong{display:block;font-size:28px;letter-spacing:.02em;line-height:1;font-weight:800;white-space:nowrap}
.brand span{display:block;font-size:13px;font-weight:700;margin-top:6px;color:#19284b;white-space:nowrap}
.nav{display:flex;align-items:center;gap:38px;font-size:17px;font-weight:700;color:#17213a;min-width:0}
.nav a{position:relative;padding:30px 2px 26px;white-space:nowrap;flex:0 0 auto}
.nav a::after{content:"";position:absolute;left:50%;bottom:14px;width:0;height:4px;border-radius:999px;background:var(--navy);transform:translateX(-50%);transition:.2s ease}
.nav a:hover::after,.nav a.active::after{width:34px}

.hero{position:relative;overflow:hidden;background:linear-gradient(120deg,#fff 0%,#fff 44%,#F3F8FC 100%);border-bottom:1px solid #E7EEF7}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% 32%,rgba(15,127,140,.14),transparent 32%),linear-gradient(90deg,rgba(13,27,61,.04) 1px,transparent 1px),linear-gradient(0deg,rgba(13,27,61,.04) 1px,transparent 1px);background-size:auto,42px 42px,42px 42px;opacity:.78;pointer-events:none}
.hero::after{content:"";position:absolute;left:-5vw;right:-5vw;bottom:-78px;height:180px;background:linear-gradient(135deg,rgba(230,239,249,.8),rgba(255,255,255,.95));clip-path:polygon(0 28%,22% 72%,48% 45%,72% 65%,100% 38%,100% 100%,0 100%)}
.hero-grid{position:relative;z-index:2;min-height:560px;display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,.92fr);align-items:center;gap:44px;padding:56px 0 92px}
.hero-copy{min-width:0}
.hero-copy h1{margin:0;color:var(--navy);font-size:clamp(40px,5vw,68px);letter-spacing:-.03em;line-height:1.12;font-weight:900}
.hero-en{font-size:25px;color:var(--navy);font-weight:500;margin:14px 0 24px}
.hero-tags{font-size:24px;color:var(--teal);font-weight:800;letter-spacing:.02em;margin:0 0 42px}
.hero-tags span{color:var(--navy);opacity:.65;margin:0 .35em}
.hero-actions{display:flex;gap:28px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:14px;min-width:170px;padding:16px 26px;border-radius:8px;border:2px solid transparent;font-weight:800;font-size:18px;box-shadow:0 10px 24px rgba(13,27,61,.08);transition:.2s ease}
.btn span{font-size:28px;line-height:0}
.btn.primary{background:linear-gradient(135deg,var(--navy),#053572);color:#fff}
.btn.ghost{background:#fff;color:var(--teal);border-color:var(--teal);box-shadow:none}
.btn:hover{transform:translateY(-2px)}
.hero-visual{height:440px;display:flex;align-items:center;justify-content:center;min-width:0}
.hero-visual svg{width:min(100%,560px);height:auto;filter:drop-shadow(0 24px 42px rgba(13,27,61,.12))}

.section{padding:48px 0}
.intro-cards{padding-top:64px;background:#fff}
.four-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.feature-card{background:#fff;border:1px solid #E3EAF3;border-radius:14px;padding:28px 28px 30px;box-shadow:var(--shadow);min-height:210px;position:relative;overflow:hidden;min-width:0}
.feature-card::before{content:"";position:absolute;inset:0 0 auto;height:4px;background:linear-gradient(90deg,var(--teal),#69C6CF);opacity:.95}
.feature-card.accent::before{background:linear-gradient(90deg,var(--gold),#F6C75E)}
.feature-icon{width:62px;height:62px;border-radius:50%;display:grid;place-items:center;background:#EAF7F8;color:var(--teal);font-size:32px;font-weight:800;margin-bottom:18px}
.feature-card.accent .feature-icon{background:#FFF5DD;color:var(--gold)}
.feature-card h3{margin:0 0 12px;color:var(--navy);font-size:25px;line-height:1.22}
.feature-card p{margin:0;color:#4D5F76;font-size:16px}

.section-title.centered{display:flex;align-items:center;justify-content:center;gap:18px;text-align:center;margin-bottom:26px;color:var(--navy)}
.section-title.centered span{display:block;width:118px;height:1px;background:linear-gradient(90deg,transparent,#8EB6CB)}
.section-title.centered span::after{content:"";display:block;width:8px;height:8px;margin:-3.5px auto;background:var(--teal);border-radius:50%}
.section-title h2{font-size:36px;line-height:1;margin:0;color:var(--navy);letter-spacing:.05em}
.section-title p{margin:8px 0 0;color:var(--navy);font-size:18px}
.section-title.simple{margin-top:12px}.section-title.simple h2{letter-spacing:.12em}
.research-home{background:linear-gradient(180deg,#fff 0%,#F8FBFE 100%);padding-top:18px}
.research-panels{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.research-panel{min-height:220px;border-radius:12px;padding:30px 34px;display:grid;grid-template-columns:160px minmax(0,1fr);gap:24px;align-items:center;color:#fff;box-shadow:0 18px 38px rgba(13,27,61,.18);overflow:hidden;position:relative;min-width:0}
.research-panel::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 90% 20%,rgba(255,255,255,.22),transparent 32%),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(0deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:auto,38px 38px,38px 38px;opacity:.8}
.research-panel>*{position:relative;z-index:1}
.panel-blue{background:linear-gradient(135deg,#061C42,#05306A)}.panel-teal{background:linear-gradient(135deg,#064A5B,#067D83)}
.research-panel h3{font-size:23px;line-height:1.35;margin:0 0 14px;color:#fff}
.research-panel ul{margin:0 0 16px;padding-left:20px}.research-panel li{margin:4px 0}.research-panel a{color:#6BE2E7;font-weight:800}
.panel-art{height:150px;border-radius:14px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);position:relative;overflow:hidden}
.panel-art::before{content:"";position:absolute;inset:18px;border-radius:50%;border:1px solid rgba(126,228,235,.6)}
.head-art::after{content:"";position:absolute;left:42px;top:30px;width:72px;height:96px;border:2px solid rgba(126,228,235,.9);border-radius:50% 46% 42% 50%;box-shadow:inset -20px 0 0 rgba(126,228,235,.12)}
.interaction-art::after{content:"";position:absolute;left:42px;top:38px;width:78px;height:62px;border:3px solid rgba(205,250,251,.85);border-radius:10px;box-shadow:48px 44px 0 -26px rgba(205,250,251,.85)}

.applications-home{padding-top:28px;padding-bottom:58px;background:#fff}
.app-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.app-card{display:grid;grid-template-columns:74px minmax(0,1fr);gap:18px;align-items:center;background:#fff;border:1px solid #E1EAF5;border-radius:12px;padding:22px 24px;box-shadow:0 10px 26px rgba(13,27,61,.06);min-width:0}
.app-card h3{margin:0 0 8px;font-size:20px;color:var(--navy);line-height:1.35}.app-card p{margin:0;color:#617087}.app-icon{width:58px;height:58px;border-radius:50%;background:#EDF7F8;position:relative}.app-icon::before{content:"";position:absolute;inset:15px;border:4px solid var(--teal);border-radius:8px}.app-icon.robot::before{border-color:var(--navy);border-radius:50% 50% 12px 12px}.app-icon.support::before{border-color:var(--teal);border-radius:50%}.app-icon.mobility::before{border-color:var(--gold);border-radius:12px}

.page-hero{background:linear-gradient(135deg,#F6FAFD,#fff);border-bottom:1px solid var(--line);padding:84px 0 62px}.page-hero .eyebrow{color:var(--teal);font-weight:900;letter-spacing:.12em;text-transform:uppercase}.page-hero h1{margin:0;color:var(--navy);font-size:54px}.page-hero p{font-size:20px;color:#516178}.page-content{background:#fff}.prose{max-width:920px}.prose h2{font-size:34px;color:var(--navy);border-left:5px solid var(--teal);padding-left:16px;margin:42px 0 18px}.prose h3{font-size:24px;color:var(--navy);margin:26px 0 8px}.prose p,.prose li{font-size:18px;color:#38465F}.prose ul{padding-left:25px}.prose a{color:var(--teal);font-weight:800}

.site-footer{background:linear-gradient(135deg,#061936,#082B58);color:#fff;margin-top:0}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:34px;padding:42px 0;align-items:start}.footer-brand{display:flex;gap:16px;align-items:center;min-width:0}.footer-brand img{width:86px;height:86px;background:#fff;border-radius:50%;padding:8px;flex:0 0 auto}.footer-brand strong{font-size:32px}.footer-brand p{margin:2px 0;color:#DDE8F5}.site-footer h3{margin:0 0 12px;color:#fff}.site-footer p{margin:6px 0;color:#DDE8F5;overflow-wrap:anywhere}.copyright{text-align:center;border-top:1px solid rgba(255,255,255,.15);padding:18px 0;color:#BFD0E5;font-size:14px}

@media(max-width:1180px){
  .container{width:min(1040px,92vw)}
  .header-inner{gap:18px}
  .nav{gap:24px;font-size:16px}
  .hero-grid{grid-template-columns:minmax(0,1fr) minmax(320px,.85fr);gap:24px}
  .four-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .research-panel{grid-template-columns:120px minmax(0,1fr);padding:26px}
}

@media(max-width:860px){
  .container{width:min(100% - 28px,760px)}
  .site-header{position:sticky}
  .header-inner{min-height:auto;display:grid;grid-template-columns:1fr;gap:8px;padding:10px 0 8px}
  .brand{gap:10px;max-width:100%}
  .brand img{width:54px;height:54px}
  .brand strong{font-size:22px}
  .brand span{font-size:12px;white-space:normal;line-height:1.25;max-width:260px}
  .nav{width:100%;gap:0;overflow-x:auto;overflow-y:hidden;padding:0 0 4px;scrollbar-width:none;-webkit-overflow-scrolling:touch;justify-content:flex-start;border-top:1px solid rgba(216,226,239,.7)}
  .nav::-webkit-scrollbar{display:none}
  .nav a{padding:10px 16px 12px;font-size:15px}
  .nav a::after{bottom:4px;height:3px}
  .nav a:hover::after,.nav a.active::after{width:24px}

  .hero::after{display:none}
  .hero-grid{grid-template-columns:1fr;min-height:auto;gap:16px;padding:34px 0 42px;text-align:left}
  .hero-copy h1{font-size:clamp(34px,10vw,48px);letter-spacing:-.02em}
  .hero-en{font-size:18px;margin:10px 0 16px;line-height:1.45}
  .hero-tags{font-size:18px;margin:0 0 26px;line-height:1.8}
  .hero-actions{gap:12px}
  .btn{min-width:0;flex:1 1 150px;padding:12px 18px;font-size:16px}
  .hero-visual{height:auto;max-height:320px;overflow:hidden;justify-content:center;opacity:.95}
  .hero-visual svg{width:min(92vw,390px);filter:drop-shadow(0 14px 28px rgba(13,27,61,.10))}

  .section{padding:34px 0}
  .intro-cards{padding-top:34px}
  .four-grid,.research-panels,.app-grid,.footer-grid{grid-template-columns:1fr}
  .feature-card{min-height:auto;padding:22px 22px 24px}
  .feature-icon{width:50px;height:50px;font-size:26px;margin-bottom:12px}
  .feature-card h3{font-size:22px}
  .section-title.centered{margin-bottom:20px}
  .section-title.centered span{display:none}
  .section-title h2{font-size:30px}
  .section-title p{font-size:16px}
  .research-panel{grid-template-columns:1fr;min-height:auto;padding:24px 22px}
  .panel-art{display:none}
  .research-panel h3{font-size:21px}
  .app-card{grid-template-columns:60px minmax(0,1fr);padding:18px}
  .app-card h3{font-size:18px}
  .app-icon{width:50px;height:50px}

  .page-hero{padding:46px 0 36px}.page-hero h1{font-size:38px}.page-hero p{font-size:17px}.prose h2{font-size:27px}.prose h3{font-size:21px}.prose p,.prose li{font-size:16px}
  .footer-grid{gap:22px;padding:34px 0}.footer-brand img{width:64px;height:64px}.footer-brand strong{font-size:26px}
}

@media(max-width:520px){
  .container{width:min(100% - 22px,500px)}
  .brand img{width:48px;height:48px}.brand strong{font-size:20px}.brand span{font-size:11px;max-width:220px}
  .nav a{font-size:14px;padding:9px 14px 11px}
  .hero-grid{padding:28px 0 34px}.hero-copy h1{font-size:32px;line-height:1.16}.hero-en{font-size:16px}.hero-tags{font-size:16px;line-height:1.75}
  .hero-tags span{margin:0 .2em}.btn{width:100%;flex-basis:100%;padding:12px 16px}.hero-visual{max-height:260px}.hero-visual svg{width:92vw}
  .feature-card,.research-panel,.app-card{border-radius:12px}
  .feature-card p,.research-panel li,.app-card p{font-size:15px}
  .research-panel ul{padding-left:18px}.app-card{grid-template-columns:1fr}.app-icon{margin-bottom:2px}
  .site-footer{text-align:left}.footer-brand{align-items:flex-start}.copyright{font-size:12px;padding:14px 10px}
}