:root{--primary:#6366f1;--primary-dark:#4f46e5;--primary-light:#818cf8;--secondary:#06b6d4;--accent:#f472b6;--dark:#0f172a;--dark-light:#1e293b;--gray:#64748b;--gray-light:#94a3b8;--light:#f8fafc;--white:#ffffff;--gradient-1:linear-gradient(135deg,#6366f1 0%,#8b5cf6 50%,#06b6d4 100%);--gradient-2:linear-gradient(135deg,#0f172a 0%,#1e293b 100%);}
*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;background:var(--dark);color:var(--light);line-height:1.6;overflow-x:hidden;}
a{text-decoration:none;}
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(15,23,42,.8);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.1);}
.nav-container{max-width:1400px;margin:0 auto;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;}
.logo{display:flex;align-items:center;gap:.75rem;}
.logo-icon{width:40px;height:40px;background:var(--gradient-1);border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.25rem;color:#fff;}
.logo-text{font-size:1.5rem;font-weight:700;background:var(--gradient-1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.nav-links{display:flex;gap:2.5rem;list-style:none;}
.nav-links a{color:var(--gray-light);font-weight:500;transition:color .3s;position:relative;}
.nav-links a:hover{color:#fff;}
.nav-links a.active{color:#fff;}
.nav-links a.active::after{content:'';position:absolute;bottom:-4px;left:0;right:0;height:2px;background:var(--gradient-1);border-radius:1px;}
.lang-switcher{position:relative;margin-left:1.5rem;}
.lang-current{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:8px;color:#fff;font-size:.875rem;cursor:pointer;transition:all .3s;}
.lang-current:hover{background:rgba(255,255,255,.2);}
.lang-current::after{content:'\25BC';font-size:.625rem;}
.lang-dropdown{position:absolute;top:100%;right:0;margin-top:.5rem;background:var(--dark-light);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:.5rem;min-width:140px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .3s;z-index:1001;}
.lang-switcher:hover .lang-dropdown,.lang-dropdown.show{opacity:1;visibility:visible;transform:translateY(0);}
.lang-option{display:flex;align-items:center;gap:.75rem;padding:.625rem 1rem;border-radius:8px;cursor:pointer;transition:all .2s;font-size:.875rem;color:var(--gray-light);}
.lang-option:hover{background:rgba(99,102,241,.2);color:#fff;}
.lang-option.active{background:var(--gradient-1);color:#fff;}
.mobile-menu-btn{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;}
.mobile-sidebar{position:fixed;top:0;right:-100%;width:min(320px,85vw);height:100vh;background:var(--dark-light);z-index:1002;padding:5rem 2rem 2rem;transition:right .35s ease;border-left:1px solid rgba(255,255,255,.1);}
.mobile-sidebar.open{right:0;}
.mobile-sidebar ul{list-style:none;}
.mobile-sidebar li{margin-bottom:1.25rem;}
.mobile-sidebar a{color:var(--gray-light);font-size:1.05rem;font-weight:500;}
.mobile-sidebar a:hover{color:#fff;}
.mobile-close{position:absolute;top:1.25rem;right:1.25rem;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;}
.mobile-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1001;opacity:0;visibility:hidden;transition:all .3s;}
.mobile-overlay.show{opacity:1;visibility:visible;}
.page-header{padding:10rem 2rem 6rem;text-align:center;background:var(--gradient-2);position:relative;overflow:hidden;}
.page-header::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 20% 50%,rgba(99,102,241,.15) 0%,transparent 50%),radial-gradient(circle at 80% 50%,rgba(6,182,212,.15) 0%,transparent 50%);pointer-events:none;}
.page-header .crumb{display:inline-block;padding:.375rem 1rem;border:1px solid rgba(99,102,241,.4);border-radius:999px;font-size:.8125rem;color:var(--primary-light);background:rgba(99,102,241,.12);margin-bottom:1.5rem;position:relative;z-index:1;letter-spacing:.05em;}
.page-header h1{font-size:3.5rem;font-weight:700;margin-bottom:1rem;position:relative;z-index:1;}
.page-header h1 span{background:var(--gradient-1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.page-header p{font-size:1.25rem;color:var(--gray-light);max-width:760px;margin:0 auto;position:relative;z-index:1;}
.content-section{padding:6rem 2rem;max-width:1200px;margin:0 auto;}
.content-section.tight{padding-top:0;}
.section-title{font-size:2.5rem;font-weight:700;margin-bottom:1.5rem;text-align:center;}
.section-title span{background:var(--gradient-1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.section-subtitle{text-align:center;color:var(--gray-light);font-size:1.125rem;max-width:760px;margin:0 auto 4rem;}
.panel{background:rgba(30,41,59,.3);border-radius:32px;padding:4rem;margin-bottom:6rem;}
.arch-layers{display:flex;flex-direction:column;gap:2rem;}
.arch-layer{background:rgba(30,41,59,.8);border:1px solid rgba(255,255,255,.1);border-radius:20px;padding:2rem;position:relative;}
.arch-layer::before{content:'';position:absolute;left:50%;bottom:-2rem;width:2px;height:2rem;background:var(--gradient-1);transform:translateX(-50%);}
.arch-layer:last-child::before{display:none;}
.arch-layer.highlight{border-color:rgba(99,102,241,.55);background:linear-gradient(135deg,rgba(99,102,241,.14),rgba(6,182,212,.10));}
.arch-layer-header{display:flex;align-items:center;gap:1rem;margin-bottom:1rem;}
.arch-layer-icon{width:48px;height:48px;background:var(--gradient-1);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;flex-shrink:0;}
.arch-layer h3{font-size:1.25rem;font-weight:600;}
.arch-layer p{color:var(--gray-light);margin-bottom:1.25rem;}
.arch-components{display:flex;flex-wrap:wrap;gap:.75rem;}
.arch-component{background:rgba(99,102,241,.15);border:1px solid rgba(99,102,241,.3);border-radius:12px;padding:.625rem 1.25rem;font-size:.875rem;color:var(--primary-light);}
.cap-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2rem;}
.cap-card{display:block;background:rgba(30,41,59,.5);border:1px solid rgba(255,255,255,.1);border-radius:24px;padding:2.5rem;transition:all .3s;position:relative;overflow:hidden;color:var(--light);}
.cap-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient-1);opacity:0;transition:opacity .3s;}
.cap-card:hover{transform:translateY(-8px);border-color:var(--primary-light);box-shadow:0 20px 40px rgba(99,102,241,.2);}
.cap-card:hover::before{opacity:1;}
.cap-num{font-size:3rem;font-weight:700;color:rgba(99,102,241,.25);position:absolute;top:1.25rem;right:1.75rem;line-height:1;}
.cap-icon{width:56px;height:56px;background:var(--gradient-1);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.75rem;margin-bottom:1.25rem;}
.cap-card h3{font-size:1.375rem;font-weight:600;margin-bottom:.75rem;color:var(--light);}
.cap-card p{color:var(--gray-light);font-size:.9375rem;line-height:1.7;margin-bottom:1.25rem;}
.cap-tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.25rem;}
.cap-more{color:var(--primary-light);font-size:.875rem;font-weight:600;}
.cap-more::after{content:' \2192';}
.tech-tags{display:flex;flex-wrap:wrap;gap:.5rem;}
.tech-tag{background:rgba(99,102,241,.2);padding:.375rem .75rem;border-radius:6px;font-size:.75rem;color:var(--primary-light);}
.stats-section{background:var(--gradient-2);padding:6rem 2rem;}
.stats-container{max-width:1200px;margin:0 auto;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;}
.stat-card{text-align:center;padding:2rem;background:rgba(30,41,59,.5);border:1px solid rgba(255,255,255,.1);border-radius:20px;}
.stat-number{font-size:3rem;font-weight:700;background:var(--gradient-1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem;}
.stat-label{color:var(--gray-light);font-size:.9375rem;}
.chip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;}
.chip-card{background:rgba(30,41,59,.5);border:1px solid rgba(255,255,255,.1);border-radius:24px;padding:2rem;transition:all .3s;}
.chip-card:hover{transform:translateY(-8px);border-color:var(--primary-light);box-shadow:0 20px 40px rgba(99,102,241,.2);}
.chip-card h3{font-size:1.125rem;font-weight:600;margin-bottom:.375rem;}
.chip-card .chip-tag{display:inline-block;font-size:.75rem;color:var(--secondary);background:rgba(6,182,212,.12);border:1px solid rgba(6,182,212,.3);border-radius:6px;padding:.25rem .625rem;margin-bottom:1rem;}
.chip-card p{color:var(--gray-light);font-size:.875rem;line-height:1.7;}
.os-wrap{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:stretch;}
.os-stack{display:flex;flex-direction:column;gap:1rem;}
.os-layer{border:1px solid rgba(255,255,255,.1);background:rgba(30,41,59,.6);border-radius:16px;padding:1.25rem 1.5rem;}
.os-layer.hl{border-color:rgba(99,102,241,.6);background:linear-gradient(135deg,rgba(99,102,241,.18),rgba(6,182,212,.12));}
.os-layer h4{font-size:1rem;font-weight:600;margin-bottom:.25rem;}
.os-layer p{color:var(--gray-light);font-size:.875rem;}
.model-list{display:flex;flex-direction:column;gap:1rem;}
.model-item{display:flex;gap:1rem;background:rgba(30,41,59,.6);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:1.25rem 1.5rem;align-items:flex-start;}
.model-dot{width:10px;height:10px;border-radius:50%;background:var(--gradient-1);margin-top:.45rem;flex-shrink:0;}
.model-item h4{font-size:.9375rem;font-weight:600;margin-bottom:.125rem;}
.model-item p{color:var(--gray-light);font-size:.875rem;}
.pipeline{display:flex;gap:1rem;align-items:stretch;}
.pipe-step{flex:1;background:rgba(30,41,59,.6);border:1px solid rgba(255,255,255,.1);border-radius:20px;padding:1.75rem 1.5rem;position:relative;transition:all .3s;}
.pipe-step:hover{transform:translateY(-6px);border-color:var(--primary-light);}
.pipe-step.hl{border-color:rgba(99,102,241,.6);background:linear-gradient(135deg,rgba(99,102,241,.16),rgba(6,182,212,.10));}
.pipe-step .step-n{font-size:.75rem;font-weight:700;color:var(--secondary);letter-spacing:.1em;margin-bottom:.5rem;}
.pipe-step h4{font-size:1.0625rem;font-weight:600;margin-bottom:.5rem;}
.pipe-step p{color:var(--gray-light);font-size:.8125rem;line-height:1.6;}
.pipe-arrow{display:flex;align-items:center;color:var(--primary-light);font-size:1.25rem;flex-shrink:0;}
.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;}
.split-card{background:rgba(30,41,59,.5);border:1px solid rgba(255,255,255,.1);border-radius:24px;padding:2.5rem;position:relative;overflow:hidden;}
.split-card::before{content:'';position:absolute;top:0;left:0;bottom:0;width:4px;background:var(--gradient-1);}
.split-card h3{font-size:1.375rem;font-weight:600;margin-bottom:.375rem;}
.split-card .sub{color:var(--secondary);font-size:.875rem;margin-bottom:1.5rem;}
.split-card ul{list-style:none;}
.split-card li{color:var(--gray-light);font-size:.9375rem;line-height:1.7;padding-left:1.25rem;position:relative;margin-bottom:.875rem;}
.split-card li::before{content:'';position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:50%;background:var(--gradient-1);}
.split-card li strong{color:var(--light);font-weight:600;}
.ota-band{background:linear-gradient(135deg,rgba(99,102,241,.12),rgba(6,182,212,.08));border:1px solid rgba(99,102,241,.35);border-radius:24px;padding:2.5rem;}
.ota-band h3{font-size:1.25rem;font-weight:600;margin-bottom:1.5rem;}
.ota-pills{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;}
.ota-pill{background:rgba(15,23,42,.7);border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:1.5rem;}
.ota-pill h4{font-size:1rem;font-weight:600;margin-bottom:.375rem;color:var(--primary-light);}
.ota-pill p{color:var(--gray-light);font-size:.875rem;line-height:1.6;}
.callout{margin-top:2rem;background:rgba(6,182,212,.08);border:1px solid rgba(6,182,212,.3);border-radius:20px;padding:1.75rem 2rem;display:flex;gap:1rem;align-items:flex-start;}
.callout .ic{font-size:1.5rem;}
.callout p{color:var(--light);font-size:1rem;line-height:1.7;}
.callout p strong{background:var(--gradient-1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}

.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;}
.tech-card{background:rgba(30,41,59,.5);border:1px solid rgba(255,255,255,.1);border-radius:24px;padding:2.5rem;transition:all .3s;}
.tech-card:hover{transform:translateY(-8px);border-color:var(--primary-light);box-shadow:0 20px 40px rgba(99,102,241,.2);}
.tech-icon{width:64px;height:64px;background:var(--gradient-1);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:2rem;margin-bottom:1.5rem;}
.tech-card h3{font-size:1.25rem;font-weight:600;margin-bottom:1rem;}
.tech-card p{color:var(--gray-light);font-size:.9375rem;line-height:1.7;margin-bottom:1.5rem;}
.research-section{background:rgba(30,41,59,.3);padding:6rem 2rem;}
.research-container{max-width:1200px;margin:0 auto;}
.research-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;}
.research-item{text-align:center;padding:2rem;}
.research-icon{width:80px;height:80px;background:rgba(99,102,241,.2);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem;margin:0 auto 1.5rem;}
.research-item h4{font-size:1.125rem;font-weight:600;margin-bottom:.75rem;}
.research-item p{color:var(--gray-light);font-size:.875rem;line-height:1.6;}
@media(max-width:1024px){.tech-grid{grid-template-columns:repeat(2,1fr);}.research-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:768px){.tech-grid{grid-template-columns:1fr;}.research-grid{grid-template-columns:1fr;}}
.footer{background:var(--dark);border-top:1px solid rgba(255,255,255,.1);padding:4rem 2rem 2rem;}
.footer-container{max-width:1400px;margin:0 auto;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:4rem;margin-bottom:4rem;}
.footer-brand p{color:var(--gray-light);margin:1rem 0;max-width:300px;}
.footer-links h4{font-size:1rem;font-weight:600;margin-bottom:1.5rem;}
.footer-links ul{list-style:none;}
.footer-links li{margin-bottom:.75rem;}
.footer-links a{color:var(--gray-light);transition:color .3s;}
.footer-links a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:2rem;display:flex;justify-content:space-between;align-items:center;color:var(--gray);font-size:.875rem;}
.footer-bottom a{color:var(--gray);}
.subnav{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center;position:relative;z-index:2;}
.subnav a{padding:.5rem 1.25rem;border-radius:999px;border:1px solid rgba(255,255,255,.15);color:var(--gray-light);font-size:.875rem;transition:all .25s;background:rgba(15,23,42,.6);}
.subnav a:hover{color:#fff;border-color:var(--primary-light);}
.subnav a.active{background:var(--gradient-1);color:#fff;border-color:transparent;}
@media(max-width:1024px){.chip-grid{grid-template-columns:repeat(2,1fr);}.stats-grid{grid-template-columns:repeat(2,1fr);}.cap-grid,.os-wrap,.split-grid,.ota-pills{grid-template-columns:1fr;}.footer-grid{grid-template-columns:repeat(2,1fr);}.pipeline{flex-direction:column;}.pipe-arrow{justify-content:center;transform:rotate(90deg);}}
@media(max-width:768px){.nav-links{display:none;}.mobile-menu-btn{display:block;}.page-header h1{font-size:2.25rem;}.chip-grid{grid-template-columns:1fr;}.stats-grid{grid-template-columns:1fr;}.footer-grid{grid-template-columns:1fr;gap:2rem;}.panel{padding:2rem;}.content-section{padding:4rem 1.25rem;}.section-title{font-size:1.875rem;}.footer-bottom{flex-direction:column;gap:1rem;text-align:center;}}