:root{
  --bg:#f7f7f4;
  --paper:#fbfbf8;
  --ink:#10100f;
  --muted:#70716d;
  --soft:#a9aaa5;
  --line:rgba(16,16,15,.105);
  --line-strong:rgba(16,16,15,.18);
  --shadow:0 24px 80px rgba(32,32,28,.05);
  --max:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);background:var(--bg);
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  line-height:1.65;letter-spacing:.005em;
}
a{color:inherit;text-decoration:none}
button,a{ -webkit-tap-highlight-color:transparent }
img{max-width:100%;display:block}
.wrap{width:min(calc(100% - 48px),var(--max));margin:0 auto}
.serif,h1,h2,h3,.brand,.article-title{font-family:Georgia,"Times New Roman","Songti SC","STSong",serif}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(247,247,244,.86);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(16,16,15,.055)}
.nav{min-height:74px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:28px}
.brand{font-size:31px;letter-spacing:-.045em;font-weight:400}
.nav-center,.nav-right,.social-mini,.language{display:flex;align-items:center}
.nav-center{gap:42px;font-size:13px}
.nav-center a,.nav-right a{transition:opacity .2s ease}
.nav-center a:hover,.nav-right a:hover{opacity:.48}
.nav-right{justify-content:flex-end;gap:24px}
.social-mini{gap:17px;font-size:11px;color:var(--muted)}
.language{gap:7px;font-size:12px;white-space:nowrap}
.language .sep{color:var(--soft)}
.mobile-nav{display:none}

/* Hero */
.hero{min-height:650px;display:grid;grid-template-columns:.86fr 1.14fr;align-items:center;border-bottom:1px solid var(--line);overflow:hidden}
.hero-copy{padding:96px 0 92px 28px;position:relative;z-index:2}
.eyebrow{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-bottom:29px}
h1{font-size:clamp(56px,5.7vw,84px);font-weight:400;line-height:1.03;letter-spacing:-.055em;margin:0;max-width:650px}
html[lang="en"] h1{font-size:clamp(48px,5.1vw,76px);line-height:1.01}
.hero-deck{max-width:600px;margin:30px 0 0;color:#5d5e5a;font-size:16px;line-height:1.85}
.hero-actions{display:flex;gap:13px;margin-top:35px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:26px;min-height:46px;padding:0 20px;border:1px solid var(--line-strong);font-size:13px;transition:all .22s ease;background:rgba(255,255,255,.34)}
.btn.dark{background:#11110f;color:#fff;border-color:#11110f}
.btn:hover{transform:translateY(-1px);box-shadow:0 9px 24px rgba(0,0,0,.06)}
.hero-art{height:100%;min-height:650px;position:relative;overflow:hidden;background:linear-gradient(180deg,#fafaf7 0%,#f6f7f4 55%,#f2f3ef 100%)}
.hero-art::before{content:"";position:absolute;inset:58% -8% -18% -10%;background:repeating-radial-gradient(ellipse at 48% 8%,rgba(117,120,115,.09) 0 1px,transparent 2px 14px);opacity:.55;transform:scaleY(.58)}
.flow{position:absolute;left:5%;top:18%;width:112%;height:54%;filter:drop-shadow(0 30px 28px rgba(68,69,65,.07))}
.flow::before,.flow::after{content:"";position:absolute;inset:0;border:2px solid rgba(125,128,123,.28);border-radius:50% 44% 54% 46% / 42% 56% 44% 58%;transform:rotate(-6deg) skewX(-8deg);background:linear-gradient(115deg,rgba(255,255,255,.82),rgba(255,255,255,.18) 44%,rgba(160,163,157,.10) 57%,rgba(255,255,255,.78));box-shadow:inset 0 0 0 1px rgba(255,255,255,.82),inset 16px 14px 32px rgba(255,255,255,.58)}
.flow::after{inset:11% 3% 9% 6%;border-color:rgba(84,86,82,.16);background:transparent;transform:rotate(9deg) skewX(-13deg);opacity:.86}
.hero-mark{position:absolute;right:7%;bottom:7%;font-size:10px;letter-spacing:.16em;color:#9b9c97;text-transform:uppercase}

/* Sections */
.section{padding:84px 0;border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:32px;margin-bottom:36px}
.section-head h2{font-size:31px;line-height:1.15;font-weight:400;letter-spacing:-.035em;margin:0}
.section-link{font-size:12px;color:var(--muted)}
.section-link:hover{color:var(--ink)}

.research-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:60px}
.research-list{border-top:1px solid var(--line)}
.research-row{display:grid;grid-template-columns:105px 1fr auto;gap:30px;align-items:center;min-height:150px;padding:26px 0;border-bottom:1px solid var(--line);transition:background .2s ease}
.research-row:hover{background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.46),rgba(255,255,255,0))}
.research-num{font-family:Georgia,"Times New Roman",serif;font-size:54px;color:#b8b9b4;font-weight:400;letter-spacing:-.03em;padding-left:10px}
.research-meta{font-size:11px;color:#9a9b96;margin-bottom:8px;letter-spacing:.04em;text-transform:uppercase}
.research-title{font-family:Georgia,"Times New Roman","Songti SC",serif;font-size:23px;line-height:1.38;font-weight:400;margin:0}
.research-summary{font-size:13px;color:var(--muted);margin-top:7px;max-width:680px}
.research-cta{font-size:12px;color:var(--muted);white-space:nowrap;padding-right:10px}
.research-row:hover .research-cta{color:var(--ink)}
.questions{border-left:1px solid var(--line);padding-left:40px}
.questions h3{font-size:25px;font-weight:400;margin:0 0 18px;letter-spacing:-.025em}
.question{display:flex;justify-content:space-between;gap:22px;padding:20px 0;border-bottom:1px solid var(--line);font-size:14px}
.question span:last-child{color:var(--muted)}
.question:hover{color:var(--muted)}

/* Products */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.product-card{min-height:275px;padding:27px;background:rgba(255,255,255,.42);border:1px solid rgba(16,16,15,.075);display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 12px 35px rgba(30,30,26,.018)}
.product-kicker{font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:var(--soft);margin-bottom:30px}
.product-card h3{font-size:25px;font-weight:400;margin:0 0 13px;letter-spacing:-.03em}
.product-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.8}
.product-foot{margin-top:28px;padding-top:18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}
.product-card:hover{border-color:var(--line-strong)}

/* About/follow */
.split{display:grid;grid-template-columns:1fr .92fr;gap:80px}
.about-lead{font-family:Georgia,"Times New Roman","Songti SC",serif;font-size:clamp(28px,3vw,43px);line-height:1.45;letter-spacing:-.035em;margin:0}
.about-copy{margin-top:28px;color:var(--muted);max-width:680px;font-size:15px;line-height:1.9}
.follow{border-left:1px solid var(--line);padding-left:42px}
.follow h3{font-size:25px;font-weight:400;margin:0 0 16px}
.follow-note{font-size:13px;color:var(--muted);margin-bottom:20px}
.follow-link{display:grid;grid-template-columns:86px 1fr auto;gap:18px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line);font-size:13px}
.follow-link .handle{color:var(--muted)}
.follow-link:hover .handle{color:var(--ink)}

/* Inner pages */
.inner-hero{padding:110px 0 62px;border-bottom:1px solid var(--line)}
.inner-hero .eyebrow{margin-bottom:18px}
.inner-hero h1{font-size:clamp(48px,5.3vw,76px)}
.inner-deck{max-width:720px;color:var(--muted);font-size:17px;margin-top:24px}
.index-list{max-width:960px}
.index-item{padding:34px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:105px 1fr;gap:28px}
.index-item h2{font-size:28px;font-weight:400;margin:0 0 8px}
.index-item p{color:var(--muted);font-size:14px;margin:0;max-width:700px}
.status{margin-top:14px;font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:#9a9b96}
.page-grid{display:grid;grid-template-columns:240px 1fr;gap:62px}
.page-label{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);padding-top:8px}
.page-copy{max-width:820px}
.page-copy h2{font-size:36px;font-weight:400;margin:0 0 18px}
.page-copy p{color:var(--muted);font-size:15px;line-height:1.95}
.page-copy + .page-copy{margin-top:54px;padding-top:54px;border-top:1px solid var(--line)}

/* Footer */
.site-footer{padding:44px 0 56px;color:var(--muted)}
.footer-top{display:grid;grid-template-columns:1.2fr 1.8fr 1fr;gap:50px;padding-bottom:38px;border-bottom:1px solid var(--line)}
.footer-brand .brand{display:inline-block;margin-bottom:8px}
.footer-brand p{font-size:12px;margin:0}
.footer-nav{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.footer-col strong{display:block;color:var(--ink);font-size:12px;font-weight:500;margin-bottom:10px}
.footer-col a{display:block;font-size:12px;padding:4px 0}
.footer-col a:hover{color:var(--ink)}
.footer-social{display:flex;justify-content:flex-end;gap:16px;flex-wrap:wrap;font-size:11px}
.footer-bottom{display:flex;justify-content:space-between;gap:24px;padding-top:24px;font-size:10px;letter-spacing:.03em}

@media(max-width:960px){
  .nav{grid-template-columns:1fr auto}.nav-center{display:none}.social-mini{display:none}
  .hero{grid-template-columns:1fr;min-height:auto}.hero-copy{padding:82px 0 54px}.hero-art{min-height:390px;height:390px}.flow{top:8%;left:8%;height:66%;width:105%}
  .research-layout{grid-template-columns:1fr}.questions{border-left:0;border-top:1px solid var(--line);padding:34px 0 0}
  .product-grid{grid-template-columns:1fr}.split{grid-template-columns:1fr;gap:52px}.follow{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:34px}
  .footer-top{grid-template-columns:1fr}.footer-social{justify-content:flex-start}
}
@media(max-width:650px){
  .wrap{width:min(calc(100% - 28px),var(--max))}.site-header{position:static}.nav{min-height:64px}.brand{font-size:26px}.nav-right{gap:12px}.language{font-size:11px}
  .hero-copy{padding:68px 0 44px}.hero-copy{padding-left:0}.eyebrow{margin-bottom:20px}h1,html[lang="en"] h1{font-size:clamp(45px,14vw,63px)}.hero-deck{font-size:15px}.hero-art{min-height:290px;height:290px}
  .section{padding:66px 0}.section-head{margin-bottom:24px}.section-head h2{font-size:28px}.research-row{grid-template-columns:68px 1fr;gap:16px;min-height:138px}.research-num{font-size:40px;padding-left:0}.research-cta{grid-column:2;padding-right:0}.research-title{font-size:21px}.research-summary{font-size:12px}
  .questions{padding-top:28px}.question{font-size:13px}.product-card{min-height:245px}.split{gap:44px}.follow-link{grid-template-columns:72px 1fr auto;gap:10px}
  .inner-hero{padding:76px 0 50px}.inner-hero h1{font-size:44px}.page-grid{grid-template-columns:1fr;gap:18px}.index-item{grid-template-columns:68px 1fr;gap:15px}.footer-nav{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column}.footer-social{gap:12px}
}