:root{color-scheme:dark;--bg:#080b11;--panel:#10151f;--line:#242b38;--muted:#9ba5b7;--blue:#5579ff;--white:#f4f6fb;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--white);line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{font:inherit}a,button,summary{ -webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid #8ba4ff;outline-offset:6px}h1,h2,h3,p{margin:0 0 20px}h1,h2,h3{line-height:1.3;letter-spacing:-.035em}h1{font-size:clamp(36px,4.8vw,68px);font-weight:650}h2{font-size:clamp(28px,3vw,40px);font-weight:600}h3{font-size:21px;font-weight:550}p{color:var(--muted)}em{font-style:normal;color:#7592ff}small{font-size:12px}.wrap{width:min(1200px,calc(100% - 80px));margin:auto}.skip{position:fixed;left:20px;top:-100px;background:var(--blue);padding:12px;z-index:100}.skip:focus{top:10px}header{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line);background:#080b11ee;backdrop-filter:blur(20px)}.header-inner{height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:10px;font-size:25px;font-weight:650;letter-spacing:-1px;white-space:nowrap}.brand img{width:38px;height:38px;object-fit:contain;border-radius:4px;background:white}.brand small{font-size:14px;font-weight:400;letter-spacing:0}.brand span{display:flex;align-items:baseline;gap:8px}nav{display:flex;align-items:center;gap:25px;font-size:13px;color:#bec5d2}nav a:hover,nav a[aria-current]{color:#809aff}.nav-cta{border:1px solid #465b9c;padding:9px 15px;border-radius:4px;color:white}.menu{display:none}.hero{overflow:hidden;background:radial-gradient(ellipse at 78% 50%,#12234a88,transparent 55%)}.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;align-items:center;min-height:680px;gap:24px;padding-top:64px;padding-bottom:70px}.badge{display:inline-block;color:#a9baff;border:1px solid #344879;padding:5px 11px;font-size:12px;border-radius:4px;margin-bottom:35px;background:#19234755}.eyebrow{font:11px/1.7 ui-monospace,SFMono-Regular,monospace;letter-spacing:2px;color:#7895ff;margin-bottom:20px}.hero h1{font-size:clamp(38px,4.3vw,61px);line-height:1.28;margin-bottom:25px}.lead{font-size:17px;line-height:1.9;max-width:750px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:30px;background:var(--blue);padding:13px 23px;border:1px solid var(--blue);border-radius:4px;font-size:14px;color:white;transition:background .2s,transform .2s}.button:hover{background:#6c8bff;transform:translateY(-2px)}.button.secondary{background:transparent;border-color:#3a455c}.network-art{height:470px;position:relative;background:radial-gradient(circle,#22489855,transparent 63%);isolation:isolate}.network-art:before{content:"";position:absolute;inset:0;background-image:radial-gradient(#4d6baa55 1px,transparent 1px);background-size:22px 22px;mask-image:radial-gradient(ellipse,black,transparent 72%)}.orbit{position:absolute;border:1px solid #4566aa55;border-radius:50%;left:50%;top:47%;transform:translate(-50%,-50%) rotate(-30deg);width:390px;height:250px;box-shadow:0 0 40px #14284d33}.orbit-two{width:270px;height:370px;transform:translate(-50%,-50%) rotate(-35deg)}.core{position:absolute;top:47%;left:50%;transform:translate(-50%,-50%);width:120px;height:140px;background:linear-gradient(140deg,#f4f7ff,#9caac4);border-radius:25px;box-shadow:12px 20px 0 #52627e,0 25px 85px 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var(--line);padding-block:22px;font-size:11px;color:#637188;display:flex;justify-content:space-between;gap:16px}.page-hero{padding-block:85px 60px}.page-hero h1{max-width:950px}.top-zero{padding-top:0}.steps{display:grid;grid-template-columns:repeat(5,1fr);list-style:none;padding:0;gap:25px;margin-top:45px}.steps span{display:block;border-top:1px solid #3d4f75;padding-top:20px;color:#7796ff;font:14px monospace;margin-bottom:25px}.steps h3{font-size:18px}.steps p{font-size:13px}.wide-image{margin-top:32px}.case-layout{display:grid;grid-template-columns:250px 1fr;gap:90px;align-items:start}.case-layout aside{border-top:1px solid var(--line);padding-top:25px}.case-layout aside h3{font-size:18px}.case-layout aside p{font-size:13px}.case-layout aside strong{font-weight:400;color:#d2dbec}.prose{margin-bottom:45px}.prose h2{font-size:26px}.prose p{line-height:2}.breadcrumb{padding-top:40px;font-size:12px;color:#79869b}.breadcrumb a{color:#a6b8ef}.breadcrumb+.page-hero{padding-top:40px}.credential img{height:290px;object-fit:contain;background:#e9edf4;padding:10px}.documents{margin-top:35px}.documents a{display:flex;justify-content:space-between;gap:20px;padding:25px 0;border-bottom:1px solid var(--line);color:#b6c7f7;font-size:14px}.faq{max-width:850px}details{border-bottom:1px solid var(--line);padding-block:23px}summary{cursor:pointer;font-size:18px;list-style:none;padding-right:35px;position:relative}summary:after{content:'+';position:absolute;right:5px;color:#86a1ff}details[open] summary:after{content:'−'}details p{margin:20px 0 0;font-size:15px}hr{border:0;border-top:1px solid var(--line);margin-block:25px}.notice{border-left:2px solid #5c7fef;padding:5px 0 5px 22px;margin-block:30px}.notice h3{font-size:17px}.notice p{margin:0}.checklist{list-style:none;padding:0;color:#aab5c8;font-size:14px}.checklist li{padding:12px 0;border-bottom:1px solid #263044}.checklist li:before{content:'✓';color:#7896ff;margin-right:10px}@media(min-width:1500px){.hero-grid{min-height:740px}}@media(max-width:1100px){nav{gap:14px;font-size:12px}.brand{font-size:21px}.brand small{display:none}.hero-grid{grid-template-columns:1.1fr .9fr}.network-art{transform:scale(.88)}.split{gap:35px}.case-layout{gap:45px}}@media(max-width:800px){.wrap{width:calc(100% - 40px)}.header-inner{height:72px}.brand small{display:inline}.menu{display:block;border:1px solid #354361;background:transparent;color:white;border-radius:4px;width:40px;height:38px}nav{display:none;position:absolute;top:72px;left:0;right:0;background:#0d131f;padding:22px;flex-direction:column;align-items:stretch;gap:0;border-bottom:1px solid var(--line)}nav.open{display:flex}nav a{padding:12px;font-size:14px}.nav-cta{margin-top:10px}.hero-grid{grid-template-columns:1fr;padding-top:50px;gap:12px;padding-bottom:40px}.hero 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16px;gap:16px;font-size:13px}.network-art{height:365px;margin-top:18px}.orbit-one{width:310px;height:220px}.orbit-two{width:225px;height:290px}.core{width:90px;height:110px;border-radius:20px}.core strong{font-size:50px}.node{padding:10px 13px;gap:8px}.node span{font-size:12px}.n1{left:6%;top:5%}.n2{top:25%}.n3{top:56%}.n4{top:73%}.three,.two{grid-template-columns:1fr}.section-top{display:block}.section-top .text-link{margin-top:18px}.card{padding:26px}.number{margin-bottom:24px}.case-art{height:235px}.footer-grid{grid-template-columns:1fr 1fr;padding-block:40px}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:8px}.desktop{display:none}.steps{gap:15px}.steps h3{font-size:16px}.cta{padding:60px 0}.cta p:not(.eyebrow){font-size:14px}.documents a{font-size:12px}.credential img{height:300px}.breadcrumb{font-size:11px}.page-hero h1{overflow-wrap:anywhere}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
/* Version 2: typography, animated topology, contact details and image galleries. */
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/* Officially featured Jiangyin case study */
.official-badge{display:inline-block;margin-bottom:28px;padding:8px 13px;border:1px solid #3b68a3;border-radius:5px;background:#142b4980;color:#afd0ff;font-size:12px}.official-badge:hover{background:#213d62}.official-hero .eyebrow{margin-bottom:15px}.official-cover img{width:100%;aspect-ratio:16/8;object-fit:cover}.project-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:32px 0 16px;padding:24px 0;border-block:1px solid var(--line)}.project-metrics div{padding-left:24px;border-left:1px solid var(--line)}.project-metrics div:first-child{padding-left:0;border-left:0}.project-metrics dt{font-size:36px;line-height:1.3;color:#b7cdff}.project-metrics dd{margin:8px 0 0;font-size:13px;color:var(--muted)}.metric-note{font-size:12px;color:#8e9cb1}.project-photo{margin-bottom:42px}.source-note{padding:24px;border:1px solid var(--line);border-radius:6px;background:#111b2b}.source-note h3{font-size:17px}.source-note p{font-size:13px;line-height:1.9}.customer-cards .case-art{height:220px}.customer-cards .case-copy{padding:24px}.customer-cards h3{font-size:20px}.customer-cards .wave{gap:5px}.official-card{border-color:#385d94}.official-card .case-art>span{background:#124078e8;color:#dbeaff}@media(max-width:800px){.customer-cards{grid-template-columns:1fr}.customer-cards .case-art{height:auto;aspect-ratio:16/9}.project-metrics dt{font-size:28px}.project-metrics{gap:12px}.project-metrics div{padding-left:12px}}@media(max-width:520px){.project-metrics dt{font-size:24px}.project-metrics dd{font-size:11px}.official-cover img{aspect-ratio:16/10}.official-badge{font-size:11px}}
/* Brand wordmark, Earth artwork and contextual line icons. */
.brand{display:inline-flex;align-items:center;gap:10px;line-height:1;letter-spacing:0}.brand .brand-en{display:block;font-size:26px;font-weight:700;line-height:1.15;letter-spacing:-.9px}.brand .brand-cn{display:block;font-size:20px;font-weight:500;line-height:1.15;letter-spacing:.02em}.earth-visual{position:relative;min-width:0;align-self:stretch;display:flex;align-items:center;isolation:isolate}.earth-image{width:125%;max-width:none;height:560px;object-fit:cover;object-position:65% 50%;margin-left:-10%;mask-image:linear-gradient(to right,transparent,black 13%,black 92%,transparent);border:0}.earth-visual:after{content:'';position:absolute;inset:0;pointer-events:none;background:linear-gradient(0deg,#080b11,transparent 22%,transparent 85%,#080b11);z-index:1}.hero{background:radial-gradient(ellipse at 75% 45%,#10234388,transparent 65%),#080b11}.hero-grid{grid-template-columns:1fr 1.15fr;gap:20px}.hero-grid>div:first-child{position:relative;z-index:2}.earth-caption{position:absolute;bottom:32px;left:12%;z-index:2;display:grid;gap:8px}.earth-caption span{font:10px ui-monospace,monospace;letter-spacing:2px;color:#a4c8f0}.earth-caption small{color:#7d98b7;font-size:12px}.item-icon{width:29px;height:29px;flex-shrink:0;display:block;color:#8bacff}.icon-tile{width:52px;height:52px;border:1px solid #354e7b;border-radius:12px;display:grid;place-items:center;background:linear-gradient(140deg,#20375e,#142039)}.item-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:25px}.item-heading .number{margin:0;color:#6e809e;font-size:11px;letter-spacing:1px}.card:has(.item-heading){transition:border-color .2s}.card:has(.item-heading):hover{border-color:#486496}.step-heading{display:flex;align-items:center;justify-content:space-between;border-top:1px solid #3d4f75;padding-top:20px;margin-bottom:25px}.steps .step-heading span{border:0;padding:0;margin:0}.steps .step-heading .item-icon{width:27px;height:27px}.office-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.office-card{display:flex;align-items:flex-start;gap:20px;padding:27px;border:1px solid var(--line);border-radius:8px;background:#101723}.office-card h3{font-size:18px;margin-bottom:12px}.office-card p{margin:0;font-size:14px;line-height:1.9;overflow-wrap:anywhere}.office-card .item-icon{width:24px;height:24px;margin-top:2px}.channel-card .item-icon{margin-bottom:25px}.channel-card span{display:block;margin-top:15px;font-size:13px;color:#91a6cb}.channel-card:hover{border-color:#486496}.network-resource{display:flex;align-items:flex-start;gap:28px;background:linear-gradient(130deg,#14213b,#10151f);border:1px solid #2a4067;border-radius:10px;padding:38px}.network-resource>.item-icon{width:42px;height:42px}.network-resource h2{font-size:30px}.network-resource p{font-size:15px}.icp-link:hover{color:#a4baff}.copyright{flex-wrap:wrap}.contact-grid{align-items:start}.contact-grid .qr-grid{max-width:480px}.office-section{scroll-margin-top:100px}@media(max-width:1100px){.brand .brand-en{font-size:23px}.brand .brand-cn{font-size:18px}.header-inner{gap:15px}.earth-image{height:500px}}@media(max-width:800px){.hero-grid{grid-template-columns:1fr;gap:15px}.earth-visual{min-height:350px}.earth-image{height:auto;aspect-ratio:3/2;width:100%;max-width:100%;margin:0;object-position:center}.earth-caption{left:8%;bottom:25px}.brand .brand-cn{display:block}.office-grid{grid-template-columns:1fr}.network-resource{padding:25px}.network-resource h2{font-size:26px}}@media(max-width:520px){.brand .brand-en{font-size:24px}.brand .brand-cn{font-size:18px}.earth-visual{min-height:280px}.earth-image{height:300px;aspect-ratio:auto;object-fit:cover;object-position:65% center}.earth-caption{bottom:10px;left:5%}.earth-caption span{font-size:8px;letter-spacing:1.2px}.earth-caption small{font-size:10px}.office-card{padding:22px;gap:14px}.network-resource{display:block}.network-resource>.item-icon{margin-bottom:22px}.network-resource h2{font-size:25px}.channel-grid{grid-template-columns:1fr}}

/* Homepage-wide Earth backdrop: restrained contrast behind all main content. */
.home-main{position:relative;isolation:isolate;background:#080b11;overflow:hidden}
.home-main::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background-image:url("assets/hero/earth-network.png");background-repeat:no-repeat;background-position:center;background-size:cover;background-attachment:fixed;opacity:.27}
.home-main .hero{background:linear-gradient(90deg,rgba(8,11,17,.55),rgba(8,11,17,.08))}
.home-main .hero-grid{grid-template-columns:1fr;min-height:660px;padding-top:85px;padding-bottom:85px}
.home-main .hero-grid>div{max-width:680px}
.home-main .trust{background:rgba(13,17,25,.65)}
.home-main .subtle{background:rgba(12,16,24,.62)}
.home-main .cta{background:linear-gradient(120deg,rgba(12,18,32,.78),rgba(20,36,65,.65))}
@media(max-width:800px){.home-main .hero-grid{min-height:560px;padding-top:65px;padding-bottom:65px}.home-main::before{background-position:62% center;opacity:.23}}
@media(max-width:520px){.home-main .hero-grid{min-height:530px;padding-top:45px;padding-bottom:55px}.home-main .hero{background:rgba(8,11,17,.18)}}

/* Local brand typography: identical type size and line box for both names. */
@font-face{font-family:"UI Sans";src:url("font/ui-sans-v9-regular.woff2") format("woff2");font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:"UI Sans";src:url("font/ui-sans-v9-bold.woff2") format("woff2");font-style:normal;font-weight:700;font-display:swap}
header .brand{--brand-size:22px;font-family:"UI Sans",Lato,sans-serif;align-items:center;gap:10px}
header .brand .brand-en,header .brand .brand-cn{font-family:inherit;font-size:var(--brand-size);font-weight:700;line-height:1.2;letter-spacing:0;display:block}
@media(max-width:1100px){header .brand{--brand-size:20px}}
@media(max-width:520px){header .brand{--brand-size:20px}}

/* Brand weight requested for both language labels. */
.brand .brand-en,.brand .brand-cn,header .brand .brand-en,header .brand .brand-cn{font-weight:100}