/* Codeswitch brand, look C "photoreal warm". Used by index.html and index-zh-cn.html only; inner pages keep style.css. */
@font-face{font-family:"Fraunces";font-weight:600;font-style:normal;font-display:swap;src:url(fonts/fraunces-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Fraunces";font-weight:700;font-style:normal;font-display:swap;src:url(fonts/fraunces-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"Inter";font-weight:400;font-style:normal;font-display:swap;src:url(fonts/inter-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Inter";font-weight:500;font-style:normal;font-display:swap;src:url(fonts/inter-latin-500-normal.woff2) format("woff2")}
@font-face{font-family:"Inter";font-weight:600;font-style:normal;font-display:swap;src:url(fonts/inter-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Inter";font-weight:700;font-style:normal;font-display:swap;src:url(fonts/inter-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"CS Noto Sans SC";font-weight:400;font-style:normal;font-display:swap;src:url(fonts/noto-sans-sc-chinese-simplified-400-normal.woff2) format("woff2")}
@font-face{font-family:"CS Noto Sans SC";font-weight:500;font-style:normal;font-display:swap;src:url(fonts/noto-sans-sc-chinese-simplified-500-normal.woff2) format("woff2")}
@font-face{font-family:"CS Noto Sans SC";font-weight:700;font-style:normal;font-display:swap;src:url(fonts/noto-sans-sc-chinese-simplified-700-normal.woff2) format("woff2")}

:root{
  --paper:#FAF8F4; --paper-2:#F1EEE6; --card:#FFFFFF; --line:#E2DDD0;
  --navy:#14213A; --ink:#14213A; --muted:#4F5A6E;
  --accent:#1F5E57; --accent-2:#8FD9BC; --wash:#E6F0EC;
  --f-display:"Fraunces",Georgia,"Times New Roman",serif;
  --f-body:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --r:10px; color-scheme:light;
}
html:lang(zh-Hans){--f-display:"Fraunces","CS Noto Sans SC","Songti SC","Noto Serif SC",serif;--f-body:"Inter","CS Noto Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.6;-webkit-text-size-adjust:100%}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:600;line-height:1.12;margin:0;text-wrap:balance;letter-spacing:-.01em}
html:lang(zh-Hans) h1,html:lang(zh-Hans) h2,html:lang(zh-Hans) h3,html:lang(zh-Hans) h4{font-weight:700;letter-spacing:0}
p{margin:0}
.wrap{width:100%;max-width:1080px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.eyebrow{font-size:.74rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
html:lang(zh-Hans) .eyebrow{letter-spacing:.08em}
.lede{font-size:1.08rem;color:var(--muted);max-width:62ch}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}

/* header */
.top{position:sticky;top:0;z-index:20;background:rgba(250,248,244,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:62px}
.brandlock{display:flex;align-items:center;gap:10px;text-decoration:none}
.brandlock img{width:38px;height:auto}
.brandlock .word{font-family:var(--f-display);font-weight:600;font-size:1.25rem}
.links{display:flex;align-items:center;gap:6px}
.links a{text-decoration:none;font-weight:500;font-size:.93rem;padding:9px 12px;border-radius:999px}
.links a.nav-link{display:none}
.links a:hover{background:var(--paper-2)}
.links a.cta{background:var(--navy);color:#fff}
.links a.cta:hover{background:var(--accent)}
.lang{display:flex;gap:2px;background:var(--paper-2);border-radius:999px;padding:3px;margin-left:4px}
.lang a{padding:6px 10px;font-size:.85rem}
.lang a.on{background:var(--card);box-shadow:0 1px 0 var(--line)}
.brandlock,.brandlock .word,.links a{white-space:nowrap}
@media(max-width:480px){
  .top .wrap{gap:6px}
  .brandlock{gap:8px}
  .brandlock img{width:34px}
  .brandlock .word{font-size:1.05rem}
  .links{gap:2px}
  .links a{padding:8px 10px;font-size:.88rem}
  .lang{margin-left:2px}.lang a{padding:5px 8px;font-size:.8rem}
}
@media(min-width:860px){.links a.nav-link{display:inline-block}}

/* hero: photo on top, copy below on mobile; copy over a navy fade on desktop */
.hero-photo{position:relative}
.hero-photo img{width:100%;height:min(46vh,340px);object-fit:cover;object-position:35% center}
.hero-photo:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,33,58,0) 45%,rgba(20,33,58,.5))}
.hero{padding:28px 0 36px}
.hero-copy{display:flex;flex-direction:column;gap:14px}
.hero h1{font-size:clamp(2.2rem,8.6vw,3.9rem);line-height:1.05}
.hero .sub{font-size:1.08rem;color:var(--muted);max-width:54ch}
.ctarow{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:999px;font-weight:600;text-decoration:none;background:var(--navy);color:#fff}
.btn:hover{background:var(--accent)}
.btn.ghost{background:transparent;color:var(--navy);border:1px solid var(--navy)}
.btn.ghost:hover{background:var(--paper-2)}
@media(min-width:900px){
  .hero-photo img{height:560px;object-position:center 45%}
  .hero{padding:0;margin-top:-170px;position:relative;z-index:2}
  .hero h1{font-size:clamp(2rem,3.6vw,2.9rem)}
  .hero-copy{background:var(--paper);padding:40px 44px;width:100%;max-width:560px;margin-left:auto;border-radius:var(--r);border:1px solid var(--line)}
}

/* mission */
.mission{padding:64px 0 8px}
.mission .wrap{display:grid;gap:12px}
.mission h2{font-size:clamp(1.55rem,4.4vw,2.2rem);max-width:24ch}
.mission .lede{margin-top:2px}

/* Base band */
.base{margin:56px 0 0;background:var(--navy);color:#E9EDF5}
.base .wrap{display:grid;gap:16px;padding-top:44px;padding-bottom:44px}
.base .eyebrow{color:var(--accent-2)}
.base h2{font-size:clamp(1.6rem,5vw,2.4rem);color:#fff}
.base p{max-width:60ch;color:#B9C3D6}
.tiles{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
.tiles span{border:1px solid rgba(255,255,255,.28);color:#fff;padding:7px 15px;border-radius:999px;font-weight:500;font-size:.93rem}

/* products */
.products{padding:64px 0 8px;display:grid;gap:68px}
.prod{display:grid;gap:20px}
.prod .shot{border-radius:var(--r);overflow:hidden;border:1px solid var(--line);background:var(--card)}
.prod .shot img{width:100%;height:auto}
.prod .txt{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.prod h3{font-size:clamp(1.55rem,5vw,2.1rem)}
.prod .txt p{color:var(--muted);max-width:58ch}
.prod .txt p b{color:var(--ink)}
.tag{display:inline-block;font-size:.72rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}
html:lang(zh-Hans) .tag{letter-spacing:.04em}
.link{font-weight:600;color:var(--accent);text-decoration:none;border-bottom:1px solid var(--accent)}
.link:hover{color:var(--navy);border-color:var(--navy)}
@media(min-width:860px){
  .prod.has-shot{grid-template-columns:1.15fr 1fr;align-items:center;gap:44px}
  .prod.flip .shot{order:2}
}
.subs{display:grid;gap:16px;margin-top:6px}
@media(min-width:700px){.subs{grid-template-columns:1fr 1fr}}
.sub-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.sub-card .b{padding:16px 18px 20px;display:flex;flex-direction:column;gap:6px}
.sub-card h4{font-size:1.15rem}
.sub-card p{font-size:.96rem;color:var(--muted)}

/* more from the studio */
.more{padding:72px 0 8px}
.more h2{font-size:clamp(1.4rem,4vw,1.9rem);margin:8px 0 18px}
.more-grid{display:grid;gap:14px}
@media(min-width:700px){.more-grid{grid-template-columns:1fr 1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.card h3{font-size:1.3rem}
.card p{color:var(--muted);font-size:.98rem}

/* services */
.services{padding:72px 0 8px}
.services h2{font-size:clamp(1.5rem,4.4vw,2.1rem);max-width:26ch;margin:8px 0 12px}
.svc-grid{display:grid;gap:14px;margin-top:22px}
@media(min-width:700px){.svc-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1000px){.svc-grid{grid-template-columns:repeat(4,1fr)}}

/* build + contact */
.build{margin-top:72px;background:var(--wash);border-block:1px solid #CFE0D9}
.build .wrap{padding-top:44px;padding-bottom:44px;display:grid;gap:14px}
.build h2{font-size:clamp(1.5rem,4.4vw,2.1rem)}
.build p{max-width:62ch;color:#3A4D5E}
.contact{padding:72px 0 64px}
.contact .box{background:var(--navy);color:#fff;border-radius:var(--r);padding:36px 26px;display:grid;gap:14px}
.contact h2{font-size:clamp(1.5rem,5vw,2.3rem);color:#fff;max-width:22ch}
.contact p{color:#B9C3D6;max-width:56ch}
.contact .btn{background:var(--accent-2);color:#0B2A1F}
.contact .btn:hover{background:#B3E8D2}
.mail{font-weight:600;user-select:all}

footer{border-top:1px solid var(--line);padding:30px 0 40px;color:var(--muted);font-size:.92rem}
footer .wrap{display:grid;gap:14px}
.fl{display:flex;flex-wrap:wrap;gap:6px 18px}
.fl a{text-decoration:none;font-weight:500}
.fl a:hover{color:var(--accent)}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* architecture */
.arch{padding:64px 0 8px}
.arch .wrap{display:grid;gap:22px}
.arch h2{font-size:clamp(1.5rem,4.6vw,2.2rem);max-width:22ch}
.arch .lede{max-width:56ch}
.arch .copy{display:grid;gap:14px;align-items:start;justify-items:start}
.archfig{margin:0;max-width:440px;width:100%;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--paper)}
.archfig svg{display:block;width:100%;height:auto}
@media(min-width:900px){.arch .wrap{grid-template-columns:1fr 440px;align-items:center;gap:56px}}

/* hero split (square photo) */
.hero-split .hero-photo img{height:340px;object-position:center 40%}
@media(min-width:900px){
 .hero-split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;max-width:1180px;margin:0 auto;padding:48px 24px}
 .hero-split .hero-photo img{height:auto;aspect-ratio:1/1;border-radius:var(--r);box-shadow:0 18px 50px rgba(20,33,58,.18);object-position:center}
 .hero-split .hero-photo:after{display:none}
 .hero-split .hero{margin-top:0;padding:0}
 .hero-split .hero .wrap{padding:0;max-width:none}
 .hero-split .hero-copy{background:none;border:0;padding:0;max-width:none;margin:0}
 .hero-split .hero h1{font-size:clamp(2.2rem,3.8vw,3.2rem)}
}

/* base detail */
.bgrid{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(min(100%,250px),1fr));margin-top:10px}
.bcard{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:var(--r);padding:18px}
.bcard h3{font-size:1.02rem;color:#fff;margin:0 0 6px;font-family:Inter,system-ui,sans-serif;font-weight:600}
.bcard p{font-size:.93rem;margin:0;color:#B9C3D6}
.bstack{font:500 .82rem/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--accent-2)!important;margin:4px 0 12px}
.bconn{font-size:1.25rem;color:#fff;margin:14px 0 0}
.bsteps{list-style:none;counter-reset:s;margin:0;padding:0;display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr))}
.bsteps li{counter-increment:s;background:rgba(143,217,188,.1);border:1px solid rgba(143,217,188,.35);border-radius:var(--r);padding:16px 16px 16px 54px;position:relative;display:flex;flex-direction:column;gap:4px}
.bsteps li:before{content:counter(s);position:absolute;left:14px;top:14px;width:28px;height:28px;border-radius:50%;background:var(--accent-2);color:var(--navy);font-weight:700;display:grid;place-items:center}
.bsteps b{color:#fff}.bsteps span{font-size:.92rem;color:#B9C3D6}
.bnote{font-size:.93rem;margin:0}
@media(min-width:900px){.hero-split{max-width:1040px;padding:48px 0;gap:48px}.bgrid{grid-template-columns:repeat(3,1fr)}}
.svc-consult{margin-top:22px;padding:16px 18px;border:1px dashed var(--line);border-radius:var(--r);background:var(--paper-2,#F1EEE6);color:var(--ink)}.svc-consult .link{font-weight:600;white-space:nowrap}

/* how it works */
.flows{display:grid;gap:12px;margin-top:6px}
.flow{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:var(--r);padding:16px 18px}
.flow h3{font:600 .8rem Inter,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-2);margin:0 0 10px}
.chain{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.node{background:rgba(143,217,188,.12);border:1px solid rgba(143,217,188,.4);color:#fff;border-radius:999px;padding:6px 14px;font-size:.92rem}
.arr{color:var(--accent-2);font-weight:700}
.bgrid.two{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))!important}
.under{margin-top:8px;border-top:1px solid rgba(255,255,255,.16);padding-top:12px}
.under summary{cursor:pointer;color:#fff;font-weight:600;padding:6px 0;list-style:none}
.under summary:before{content:"+ ";color:var(--accent-2)}.under[open] summary:before{content:"– "}
.under>*{margin-top:12px}
@media(min-width:900px){.hero-split .hero-photo img{aspect-ratio:5/4}}
.hero-split .hero-photo img{object-position:center}
@media(min-width:900px){.hero-split{grid-template-columns:1.15fr .85fr}.hero-split .hero-photo img{aspect-ratio:1500/920}}
.uc{margin:6px 0 8px;padding-left:1.1em;display:grid;gap:6px;font-size:.95rem}.uc b{color:var(--ink)}
.ucases{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));margin-top:14px}
.ucase{border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:var(--r);padding:14px 16px;background:var(--paper)}
.ucase h4{margin:0 0 4px;font-size:1.05rem}.ucase p{margin:0;font-size:.93rem;color:var(--muted)}