:root{--navy:#071a2c;--blue:#0d3152;--ink:#111820;--muted:#5e6872;--line:#d8dde1;--paper:#f5f3ee;--white:#fff;--accent:#b8d7e8}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font-family:"Helvetica Neue","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:#fff}
a{color:inherit;text-decoration:none}
.site-header{height:86px;padding:0 4.2vw;display:flex;align-items:center;justify-content:space-between;background:#fff;position:relative;z-index:20;border-bottom:1px solid rgba(0,0,0,.1)}
.brand{display:flex;align-items:flex-end;gap:15px}
.brand-en{font:600 28px/1 Arial,sans-serif;letter-spacing:.18em}
.brand-cn{font-size:12px;letter-spacing:.22em;color:#59636c;padding-bottom:2px}
.site-nav{height:100%;display:flex;align-items:center;gap:34px;font-size:13px}
.site-nav>a{height:100%;display:flex;align-items:center;position:relative}
.site-nav>a:not(.nav-contact):after{content:"";height:2px;width:0;background:var(--ink);position:absolute;bottom:0;left:0;transition:.25s}
.site-nav>a:hover:after{width:100%}
.nav-contact{background:var(--navy);color:#fff;padding:0 28px;margin-left:10px;gap:28px}
.jump-icon{display:inline-flex;width:1.15em;height:1.15em;align-items:center;justify-content:center;flex:0 0 auto}
.jump-icon svg{display:block;width:100%;height:100%;overflow:visible;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:square;stroke-linejoin:miter}
.nav-contact .jump-icon{font-size:18px}
.menu-toggle{display:none;background:none;border:0}
.hero{height:calc(100vh - 86px);min-height:680px;position:relative;overflow:hidden;background:var(--navy);color:#fff}
.hero-image{width:100%;height:100%;object-fit:cover}
.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(2,15,29,.94) 0%,rgba(3,18,32,.63) 37%,rgba(2,15,29,.08) 73%),linear-gradient(0deg,rgba(2,15,29,.42),transparent 42%)}
.hero-content{position:absolute;left:8.3vw;top:50%;transform:translateY(-48%);max-width:780px}
.eyebrow{font-size:11px;letter-spacing:.25em;font-weight:600;margin:0 0 26px}
.hero h1{font:400 clamp(45px,5.4vw,78px)/1.13 Georgia,"Songti SC",serif;letter-spacing:-.035em;margin:0 0 28px}
.hero-copy{max-width:575px;font-size:17px;line-height:1.8;color:#d9e0e5;margin:0 0 38px}
.text-link{display:inline-flex;gap:36px;align-items:center;border-bottom:1px solid var(--ink);padding:0 0 9px;font-size:13px;font-weight:600;letter-spacing:.04em}
.text-link span{transition:.25s}
.text-link:hover span{transform:translateX(7px)}
.light-link{border-color:#fff}
.scroll-cue{position:absolute;right:4.2vw;bottom:34px;display:flex;align-items:center;gap:15px}
.scroll-cue span{font-size:9px;letter-spacing:.2em}
.scroll-cue i{display:block;width:48px;height:1px;background:#fff}
.section-pad{padding:120px 8.3vw}
.section-label{font-size:10px;font-weight:700;letter-spacing:.19em;text-transform:uppercase;margin-bottom:65px;color:#57636e}
.section-label-light{color:#adc2d2}
.intro{background:var(--paper)}
.intro-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:10vw}
.display-title{font:400 clamp(39px,4.3vw,66px)/1.15 Georgia,"Songti SC",serif;letter-spacing:-.035em;margin:0}
.intro-copy{padding-top:10px;font-size:16px;line-height:1.9;color:#4c5660}
.intro-copy p:first-child{margin-top:0}
.intro-copy .text-link{margin-top:26px;color:var(--ink)}
.services{background:var(--navy);color:#fff;padding-bottom:30px}
.services-head{display:grid;grid-template-columns:1.4fr .6fr;gap:9vw;padding-bottom:75px}
.services-head .display-title{max-width:850px}
.services-head>p{align-self:end;color:#bac7d1;line-height:1.8;margin:0}
.light{color:#fff}
.service-list{border-top:1px solid rgba(255,255,255,.25)}
.service-row{min-height:135px;padding:0 8.3vw;display:grid;grid-template-columns:7% 42% 1fr auto;align-items:center;border-bottom:1px solid rgba(255,255,255,.2);transition:.3s}
.service-row:hover{background:#0d2942;padding-left:9.1vw;padding-right:7.5vw}
.service-num{font:12px Georgia,serif;color:#9eb2c2}
.service-row h3{font:400 clamp(25px,2.3vw,36px) Georgia,"Songti SC",serif;margin:0}
.service-row p{color:#aebbc5;font-size:13px}
.row-arrow{font-size:24px}
.approach{background:#fff}
.approach-grid{display:grid;grid-template-columns:1fr 1fr;gap:10vw}
.approach-sticky{align-self:start;position:sticky;top:120px}
.approach-sticky .eyebrow{color:#63707b}
.steps{border-top:1px solid #9da5ac}
.step{display:grid;grid-template-columns:70px 1fr;gap:15px;padding:38px 0 45px;border-bottom:1px solid var(--line)}
.step>span{font:13px Georgia,serif;color:#71808c}
.step h3{font:400 29px Georgia,"Songti SC",serif;margin:0 0 14px}
.step p{color:var(--muted);line-height:1.8;margin:0}
.insights{background:var(--paper)}
.insights-title{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:70px}
.insights-title .section-label{margin:0}
.insight-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:8vw}
.abstract-visual{height:360px;background:linear-gradient(135deg,#0c2740 5%,#204f70 48%,#a8c4d4);position:relative;overflow:hidden;margin-bottom:30px}
.abstract-visual span{position:absolute;width:70%;height:150%;border:1px solid rgba(255,255,255,.6);border-radius:50%;top:-27%;left:42%;transform:rotate(24deg)}
.abstract-visual i{position:absolute;width:40%;height:120%;background:rgba(5,23,39,.47);top:-10%;left:30%;transform:skew(-16deg)}
.abstract-visual b{position:absolute;inset:65% -10% -30% 20%;background:rgba(255,255,255,.18);transform:rotate(-12deg)}
.insight-meta{font-size:10px;letter-spacing:.17em;color:#61717c;margin-bottom:13px}
.feature-insight h3{font:400 34px/1.3 Georgia,"Songti SC",serif;margin:0 0 16px}
.feature-insight p{color:var(--muted);line-height:1.8}
.feature-insight .text-link{margin-top:12px}
.insight-list{border-top:1px solid #929ba2}
.insight-list article{position:relative;padding:35px 55px 40px 0;border-bottom:1px solid #bac0c4}
.insight-list h3{font:400 24px/1.5 Georgia,"Songti SC",serif;margin:0}
.insight-list article>a{position:absolute;right:4px;top:50%;font-size:21px}
.about-banner{min-height:600px;background:var(--blue);color:#fff;display:grid;grid-template-columns:.8fr 1.2fr;align-items:center;padding:100px 8.3vw;overflow:hidden}
.about-mark{font:400 500px/1 Georgia,serif;color:rgba(255,255,255,.05);height:420px;margin-left:-50px}
.about-content{max-width:720px}
.about-content h2{font:400 clamp(36px,3.5vw,58px)/1.3 Georgia,"Songti SC",serif;margin:0 0 26px}
.about-content>p:not(.eyebrow){color:#c2d2dc;line-height:1.9;max-width:600px;margin-bottom:35px}
.contact{display:grid;grid-template-columns:.9fr 1.1fr;gap:10vw}
.contact-copy>p{color:var(--muted);line-height:1.8;max-width:480px;margin-top:30px}
.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:28px 24px;padding-top:15px}
.contact-form label{font-size:12px;font-weight:600}
.contact-form input,.contact-form select,.contact-form textarea{display:block;width:100%;border:0;border-bottom:1px solid #8e979e;background:transparent;padding:14px 0;font:15px inherit;border-radius:0;outline:none}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{border-color:var(--navy)}
.contact-form .full{grid-column:1/-1}
.contact-form button{width:190px;height:55px;border:0;background:var(--navy);color:#fff;font-weight:600;display:flex;justify-content:space-around;align-items:center;cursor:pointer}
.form-status{font-size:13px;color:#376247}
footer{background:#071521;color:#dfe7ec;padding:80px 8.3vw 30px}
.footer-top{display:flex;justify-content:space-between;padding-bottom:65px;border-bottom:1px solid rgba(255,255,255,.18)}
.footer-brand .brand-cn{color:#91a5b4}
.footer-top p{line-height:1.8;color:#9dafbb;margin:0}
.footer-grid{display:grid;grid-template-columns:1fr 1fr 2fr;padding:60px 0}
.footer-grid>div{display:flex;flex-direction:column;gap:14px}
.footer-grid h4{color:#fff;font-size:11px;letter-spacing:.15em;margin:0 0 8px}
.footer-grid a,.footer-grid span{font-size:13px;color:#9fb0bb}
.footer-bottom{padding-top:25px;border-top:1px solid rgba(255,255,255,.18);display:flex;justify-content:space-between;font-size:11px;color:#7f939f}
.footer-bottom div{display:flex;gap:25px}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.reveal.visible{opacity:1;transform:none}
@media(max-width:900px){.site-header{height:70px}
.brand-en{font-size:23px}
.site-nav{position:absolute;top:70px;left:0;right:0;height:auto;background:#fff;padding:25px 7vw 35px;display:none;flex-direction:column;align-items:flex-start;gap:0;border-top:1px solid #ddd}
.site-nav.open{display:flex}
.site-nav>a{height:auto;padding:14px 0;width:100%;font-size:15px}
.site-nav .nav-contact{margin:15px 0 0;padding:17px 20px}
.menu-toggle{display:block;width:35px;height:30px}
.menu-toggle span{display:block;height:1px;background:#111;margin:8px 0}
.hero{height:calc(100svh - 70px);min-height:620px}
.hero-image{object-position:60% center}
.hero-shade{background:linear-gradient(90deg,rgba(2,15,29,.93),rgba(2,15,29,.3)),linear-gradient(0deg,rgba(2,15,29,.45),transparent)}
.hero-content{left:7vw;right:7vw}
.hero h1{font-size:43px}
.hero-copy{font-size:15px}
.section-pad{padding:85px 7vw}
.section-label{margin-bottom:42px}
.intro-grid,.services-head,.approach-grid,.insight-grid,.contact{grid-template-columns:1fr}
.intro-grid{gap:45px}
.services-head{gap:35px}
.service-row{padding:25px 7vw;grid-template-columns:45px 1fr auto;min-height:120px}
.service-row p{grid-column:2/3;margin-bottom:0}
.service-row .row-arrow{grid-column:3;grid-row:1/3}
.service-row:hover{padding-left:7vw;padding-right:7vw}
.approach-grid{gap:60px}
.approach-sticky{position:static}
.insights-title{display:block}
.insights-title .section-label{margin-bottom:40px}
.insight-grid{gap:70px}
.about-banner{grid-template-columns:1fr;min-height:560px;position:relative}
.about-mark{position:absolute;font-size:420px;opacity:.75}
.about-content{position:relative}
.contact{gap:55px}
.footer-grid{grid-template-columns:1fr 1fr;gap:50px}
.footer-grid>div:last-child{grid-column:1/-1}
}
@media(max-width:560px){.brand-cn{display:none}
.hero h1{font-size:37px}
.hero-content{top:47%}
.scroll-cue{display:none}
.display-title{font-size:38px}
.service-row h3{font-size:25px}
.service-row p{font-size:12px}
.contact-form{grid-template-columns:1fr}
.contact-form .full{grid-column:auto}
.abstract-visual{height:260px}
.footer-top{display:block}
.footer-top p{margin-top:30px}
.footer-grid{grid-template-columns:1fr 1fr}
.footer-bottom{display:block;line-height:2}
.footer-bottom div{margin-top:8px}
}

/* R2 content and accessibility */
.skip-link{position:fixed;left:16px;top:-70px;z-index:100;background:#fff;color:#071a2c;padding:12px 18px;box-shadow:0 3px 18px rgba(0,0,0,.18)}
.skip-link:focus{top:14px}
.eyebrow,.section-label,.insight-meta{font-size:12px}
.site-nav,.text-link,.service-row p,.footer-grid a,.footer-grid span{font-size:14px}
.contact-form label{font-size:14px}
.footer-bottom{font-size:12px}
.site-nav a[aria-current="page"]:after{width:100%}
.faq{background:#fff}
.faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:10vw}
.faq-grid>div:first-child>p{color:var(--muted);line-height:1.8;margin-top:28px;max-width:440px}
.faq-list{border-top:1px solid #9da5ac}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:30px;padding:29px 0;font:400 22px/1.5 Georgia,"Songti SC",serif}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary span{font:300 24px Arial;transition:.25s}
.faq-list details[open] summary span{transform:rotate(45deg)}
.faq-list details p{color:var(--muted);line-height:1.9;margin:0;padding:0 55px 28px 0}
.consent{display:flex!important;align-items:flex-start;gap:10px;font-weight:400!important;line-height:1.6;color:var(--muted)}
.consent input{width:17px!important;height:17px;margin:2px 0 0;flex:0 0 auto}
.consent a{text-decoration:underline;color:var(--ink)}
.honeypot{position:absolute!important;left:-9999px!important}
.form-error{color:#9b2d28}
.form-success{color:#376247}
.page-hero{background:var(--navy);color:#fff;padding:100px 8.3vw 110px}
.page-hero .eyebrow{color:#adc2d2}
.page-hero h1{max-width:950px}
.page-hero>p{max-width:650px;color:#c4d0d9;font-size:17px;line-height:1.9;margin:28px 0 0}
.page-main{min-height:60vh}
.content-intro{display:grid;grid-template-columns:.75fr 1.25fr;gap:10vw}
.content-intro p{font-size:18px;line-height:1.9;color:var(--muted);margin-top:0}
.detail-list{border-top:1px solid #89949c}
.detail-card{scroll-margin-top:30px;display:grid;grid-template-columns:8% 34% 1fr;gap:35px;padding:58px 0;border-bottom:1px solid var(--line)}
.detail-card>span{font:13px Georgia,serif;color:#74818b}
.detail-card h2{font:400 31px/1.3 Georgia,"Songti SC",serif;margin:0}
.detail-card p{line-height:1.85;color:var(--muted);margin:0 0 20px}
.detail-card ul{padding-left:18px;color:#3e4952;line-height:2}
.scope-note{background:var(--paper);padding:30px;margin-top:35px;font-size:14px;line-height:1.8;color:#58636c}
.cta-strip{background:#0d3152;color:#fff;padding:85px 8.3vw;display:flex;justify-content:space-between;align-items:center;gap:50px}
.cta-strip h2{font:400 clamp(32px,3.5vw,52px)/1.25 Georgia,"Songti SC",serif;margin:0}
.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.value-card{background:#fff;padding:42px 35px;min-height:260px}
.value-card span{font-size:12px;color:#71808c}
.value-card h2{font:400 26px Georgia,"Songti SC",serif;margin:34px 0 18px}
.value-card p{color:var(--muted);line-height:1.8}
.network-band{background:var(--paper)}
.network-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:10vw}
.network-list{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid #9da5ac}
.network-list div{padding:27px 0;border-bottom:1px solid var(--line);font:400 23px Georgia,serif}
.article-list{max-width:1000px}
.article{scroll-margin-top:30px;padding:65px 0;border-top:1px solid #9da5ac}
.article h2{font:400 clamp(29px,3vw,44px)/1.3 Georgia,"Songti SC",serif;margin:10px 0 25px}
.article .article-body{max-width:760px;color:#4e5b65;font-size:17px;line-height:1.95}
.article .article-body h3{color:var(--ink);font:400 23px Georgia,"Songti SC",serif;margin:35px 0 12px}
.legal{max-width:1050px}
.legal .display-title{margin-bottom:18px}
.legal-status{display:inline-block;background:#e9edf0;color:#46535d;padding:8px 11px;font-size:12px;letter-spacing:.08em;margin-bottom:55px}
.legal section{padding:28px 0;border-top:1px solid var(--line)}
.legal h2{font:400 25px Georgia,"Songti SC",serif;margin:0 0 15px}
.legal p,.legal li{color:var(--muted);line-height:1.9}
.legal .text-link{margin-top:35px}
@media(max-width:900px){.faq-grid,.content-intro,.network-grid{grid-template-columns:1fr;gap:55px}.detail-card{grid-template-columns:45px 1fr}.detail-card>div{grid-column:2}.cta-strip{display:block}.cta-strip .text-link{margin-top:35px}.values-grid{grid-template-columns:1fr}.network-list{grid-template-columns:1fr 1fr}.page-hero{padding:75px 7vw 80px}}
@media(max-width:560px){.faq-list summary{font-size:19px}.detail-card{grid-template-columns:34px 1fr;gap:15px}.network-list{grid-template-columns:1fr}.page-hero h1{font-size:40px}}

/* R4 form alignment and language menu */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.site-nav{gap:26px}
.header-actions{height:100%;display:flex;align-items:center;gap:28px}
.language-select{height:100%;display:flex;align-items:center;position:relative}
.language-select select{-webkit-appearance:none;appearance:none;border:0;background:transparent;color:var(--ink);font:600 12px/1 "Helvetica Neue","PingFang SC","Microsoft YaHei",Arial,sans-serif;letter-spacing:.04em;padding:12px 22px 12px 4px;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='%23111820' stroke-width='1.4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 5px center}
.language-select select:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.contact-form{align-items:start}
.contact-form>label:not(.consent):not(.honeypot){display:grid;grid-template-rows:auto 52px;gap:10px;width:100%;align-self:start}
.contact-form input,.contact-form select{height:52px;min-height:52px;padding:0 36px 0 0;line-height:52px;-webkit-appearance:none;appearance:none;border:0;border-bottom:1px solid #8e979e;border-radius:0;background-color:transparent}
.contact-form select{cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%235e6872' stroke-width='1.5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 6px center}
.contact-form textarea{min-height:128px;height:128px;padding:14px 0;resize:vertical}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:0;border-bottom:2px solid var(--navy)}
.lang-en .display-title,.lang-en .hero h1,.lang-en .service-row h3,.lang-en .step h3,.lang-en .feature-insight h3,.lang-en .about-content h2,.lang-en .faq-list summary,.lang-en .detail-card h2,.lang-en .value-card h2,.lang-en .article h2,.lang-en .legal h2{font-family:Georgia,"Times New Roman",serif}
@media(max-width:1100px) and (min-width:901px){.site-header{padding-left:3vw;padding-right:3vw}.brand-cn{display:none}.site-nav{gap:18px}.nav-contact{padding:0 22px;margin-left:0}}
@media(max-width:900px){.site-nav .language-select{height:auto;width:100%;padding:8px 0}.site-nav .language-select select{font-size:15px;width:100%;padding:14px 28px 14px 0;background-position:right 4px center}.header-actions{gap:16px}.contact-form>label:not(.consent):not(.honeypot){grid-template-rows:auto 50px}}

/* R5 consent checkbox repair */
.contact-form .consent{display:flex!important;align-items:flex-start;justify-content:flex-start;justify-self:start;width:100%;gap:14px;cursor:pointer;text-align:left}
.contact-form .consent input[type="checkbox"]{-webkit-appearance:none!important;appearance:none!important;width:22px!important;height:22px!important;min-width:22px!important;min-height:22px!important;margin:1px 0 0!important;padding:0!important;border:1.5px solid #6c7780!important;border-radius:3px!important;background-color:#fff!important;background-image:none!important;cursor:pointer;flex:0 0 22px;line-height:normal!important}
.contact-form .consent input[type="checkbox"]:checked{border-color:var(--navy)!important;background-color:var(--navy)!important;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='11' viewBox='0 0 14 11'%3E%3Cpath d='M1.5 5.5L5.3 9 12.5 1.5' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")!important;background-repeat:no-repeat!important;background-position:center!important}
.contact-form .consent input[type="checkbox"]:focus-visible{outline:2px solid var(--blue)!important;outline-offset:3px}
.contact-form .consent span{display:block;flex:1;line-height:1.65}
.contact-form button:disabled{opacity:.65;cursor:wait}