:root{
  --navy:#17374B;
  --navy-ink:#1B3A57;
  --green:#4F6954;
  --gold:#B38C47;
  --paper:#FBFBFB;
  --surface:#FFFFFF;
  --line:#D8DDE2;
  --line-soft:#E7EAEC;
  --body:#3E5464;
  --muted:#6B7A85;
  --wrap:1120px;
  --sans:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--body);
  font-family:var(--sans);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--navy-ink);text-decoration:none}
a:hover{color:var(--green)}
h1,h2,h3{color:var(--navy-ink);font-weight:600;line-height:1.25;margin:0}
h1{font-size:2rem;letter-spacing:-.01em}
h2{font-size:1.3rem}
h3{font-size:1.05rem}
p{margin:0 0 1rem}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:8px 14px;border:1px solid var(--navy)}
.eyebrow{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 .8rem}
.rule{width:56px;height:2px;background:var(--gold);border:0;margin:1.1rem 0}

/* ---------- header ---------- */
.site-head{background:var(--paper);border-bottom:1px solid var(--line-soft);position:sticky;top:0;z-index:20}
.head-in{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px;max-width:var(--wrap);margin:0 auto}
.brand{display:flex;align-items:center;gap:11px}
.brand img{width:38px;height:38px}
.brand-name{font-size:1.08rem;font-weight:600;color:var(--navy);letter-spacing:.01em;line-height:1.15}
.brand-sub{font-size:.7rem;color:var(--muted);letter-spacing:.02em}
.nav{display:flex;align-items:center;gap:22px;font-size:.92rem}
.nav a{color:var(--body)}
.nav a.on{color:var(--navy-ink);box-shadow:inset 0 -2px 0 var(--gold)}
.lang{font-size:.82rem;color:var(--muted);border-left:1px solid var(--line);padding-left:18px}
.lang a{color:var(--muted)}
.lang .cur{color:var(--navy-ink);font-weight:600}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:4px;color:var(--navy);
  font:inherit;font-size:.85rem;padding:6px 12px;cursor:pointer}

/* ---------- under construction ---------- */
.nav details.uc{position:relative}
.nav details.uc summary{list-style:none;cursor:pointer;color:var(--body);display:inline-flex;
  align-items:center;gap:6px;-webkit-tap-highlight-color:transparent}
.nav details.uc summary::-webkit-details-marker{display:none}
.nav details.uc summary::after{content:"";width:5px;height:5px;border-right:1.5px solid var(--muted);
  border-bottom:1.5px solid var(--muted);transform:rotate(45deg) translateY(-2px)}
.nav details.uc[open] summary{color:var(--navy-ink)}
.nav details.uc[open] summary::after{transform:rotate(-135deg) translateY(-2px)}
.uc-pop{position:absolute;top:calc(100% + 12px);left:-16px;width:250px;max-width:78vw;z-index:40;
  background:var(--surface);border:1px solid var(--line);border-top:2px solid var(--gold);
  border-radius:4px;padding:14px 16px;font-size:.85rem;line-height:1.55;color:var(--body);
  box-shadow:0 8px 22px rgba(23,55,75,.12)}
.uc-pop b{display:block;font-size:.7rem;letter-spacing:.11em;text-transform:uppercase;
  color:var(--navy-ink);margin-bottom:6px}
.uc-note{border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:4px;
  background:var(--surface);padding:20px 22px;max-width:56ch;font-size:.95rem}
.uc-note b{display:block;font-size:.7rem;letter-spacing:.11em;text-transform:uppercase;
  color:var(--navy-ink);margin-bottom:7px}
.strip span > a{color:inherit}

/* ---------- hero ---------- */
.hero{position:relative;border-bottom:1px solid var(--line-soft);overflow:hidden}
.hero-bg{position:absolute;inset:0 0 0 auto;width:52%;background:#DFE3E5 center/cover no-repeat}
.hero-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,var(--paper) 0%,rgba(251,251,251,.92) 26%,rgba(251,251,251,.45) 62%,rgba(251,251,251,.15) 100%)}
.hero-in{position:relative;max-width:var(--wrap);margin:0 auto;padding:56px 24px 52px}
.hero h1{max-width:70%}
.hero h1 .accent{color:var(--green)}
.hero-sub{font-size:.98rem;color:var(--navy-ink);margin:0 0 .9rem}
.hero-lead{max-width:50%;color:var(--body);font-size:.95rem}
.btns{display:flex;flex-wrap:wrap;gap:10px;margin-top:1.6rem}
.btn{display:inline-block;font-size:.92rem;padding:10px 20px;border:1px solid var(--navy);color:var(--navy);
  background:transparent;border-radius:3px}
.btn:hover{background:var(--navy);color:#fff}
.btn.ghost{border-color:var(--line);color:var(--body)}
.btn.ghost:hover{background:transparent;border-color:var(--navy);color:var(--navy)}

/* ---------- keyword strip ---------- */
.strip{background:var(--navy);color:#E8EEF2}
.strip-in{max-width:none;margin:0;padding:12px 32px;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;gap:9px 18px;font-size:.71rem;
  letter-spacing:.11em;text-transform:uppercase;font-weight:600}
.strip span{display:flex;align-items:center;gap:8px}
.strip svg{width:16px;height:16px;flex:none;color:#8FA894}
.strip .sep{color:#3A5C74}

/* ---------- sections ---------- */
section{padding:46px 0}
section + section{border-top:1px solid var(--line-soft)}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:1.8rem}
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:20px 18px}
.card h3{margin:12px 0 7px}
.card p{font-size:.92rem;color:var(--body);margin:0}
.card svg{width:24px;height:24px;color:var(--green)}
a.card:hover{border-color:var(--navy)}

/* ---------- project cards ---------- */
.pcard{background:var(--surface);border:1px solid var(--line);border-radius:6px;overflow:hidden;display:block}
.pcard:hover{border-color:var(--navy)}
.pcard .thumb{aspect-ratio:16/9;background:#EDF0F2;display:flex;align-items:center;justify-content:center;
  color:#9AA7B0;font-size:.75rem}
.pcard .thumb img{width:100%;height:100%;object-fit:cover}
.pcard .pc-body{padding:14px 16px 18px}
.pcard .meta{font-size:.74rem;color:var(--muted);letter-spacing:.03em}
.pcard h3{font-size:.98rem;margin-top:6px}

/* ---------- article / project detail ---------- */
.page-head{padding:52px 0 18px}
.crumb{font-size:.85rem;color:var(--muted);margin-bottom:1.1rem}
.two-col{display:grid;grid-template-columns:230px minmax(0,1fr);gap:40px;padding-bottom:64px}
.side{border-top:2px solid var(--navy);padding-top:16px;font-size:.9rem}
.side dt{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:2px}
.side dd{margin:0 0 15px;color:var(--navy-ink)}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{font-size:.76rem;border:1px solid var(--line);border-radius:3px;padding:3px 9px;color:var(--body)}
.badge{display:inline-block;font-size:.72rem;background:#EEF2F5;color:var(--navy);border-radius:3px;
  padding:2px 9px;margin-top:5px}
.main-col{border-top:2px solid var(--navy);padding-top:16px}
.main-col h2{font-size:1.05rem;margin:1.7rem 0 .5rem}
.main-col h2:first-child{margin-top:0}
.figs{display:grid;gap:14px;margin-bottom:1.6rem}
.fig{aspect-ratio:16/9;background:#EDF0F2;border-radius:4px;display:flex;align-items:center;justify-content:center;
  color:#9AA7B0;font-size:.78rem}
.fig img{width:100%;height:100%;object-fit:cover;border-radius:4px}
.note{border-left:3px solid var(--gold);background:#FAF7F1;padding:14px 18px;font-size:.9rem;margin:1.6rem 0}
.note strong{color:var(--navy-ink)}
.todo{background:#FFF6E5;color:#7A5A12;border:1px dashed #D9B36A;border-radius:3px;padding:0 5px}
.prose{max-width:62ch}
.prose li{margin-bottom:.4rem}

/* ---------- platform callout ---------- */
.callout{border:1px solid var(--line);border-radius:6px;padding:18px 20px;background:var(--surface);
  display:flex;justify-content:space-between;gap:18px;align-items:center;flex-wrap:wrap}
.callout .lab{font-size:.7rem;letter-spacing:.11em;text-transform:uppercase;color:var(--muted)}
.callout .nm{font-size:1rem;font-weight:600;color:var(--navy-ink)}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
.cline{margin-bottom:1.2rem}
.cline .lab{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.cline .val{font-size:1.05rem;color:var(--navy-ink)}
.nospam{display:none}
.tel{display:inline-flex;gap:.34em}

/* ---------- footer ---------- */
.site-foot{background:var(--navy);color:#C3D0DA;font-size:.86rem;margin-top:0}
.foot-in{max-width:var(--wrap);margin:0 auto;padding:38px 24px 30px;display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.site-foot a{color:#C3D0DA}
.site-foot a:hover{color:#fff}
.site-foot strong{color:#fff;font-weight:600}
.foot-title{font-size:.7rem;letter-spacing:.11em;text-transform:uppercase;color:#7E96A6;margin-bottom:.7rem}
.foot-bottom{border-top:1px solid #24506E;font-size:.78rem;color:#7E96A6}
.foot-bottom .fb-in{max-width:var(--wrap);margin:0 auto;padding:14px 24px;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- responsive ---------- */
@media (max-width:900px){
  h1{font-size:1.9rem}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .two-col{grid-template-columns:1fr;gap:26px}
  .hero-bg{width:100%;opacity:.3}
  .hero-bg::after{background:linear-gradient(90deg,var(--paper) 0%,rgba(251,251,251,.55) 100%)}
  .foot-in{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--paper);
    border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;gap:0;padding:8px 24px 16px}
  .nav.open{display:flex}
  .nav a{padding:9px 0;width:100%}
  .lang{border:0;padding:9px 0}
  .nav-toggle{display:block}
  .site-head{position:relative}
  .g3,.g2,.contact-grid{grid-template-columns:1fr}
  .hero-in{padding:48px 24px 44px}
  .foot-in{grid-template-columns:1fr}
  section{padding:42px 0}
}

@media (max-width:640px){
  .uc-pop{position:static;width:100%;max-width:100%;box-shadow:none;margin:2px 0 8px;left:0}
  .nav details.uc{width:100%}
  .nav details.uc summary{padding:9px 0}
}

/* ---------- five-up small case cards ---------- */
.g5{grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.pcard.sm .thumb{aspect-ratio:16/9}
.pcard.sm .pc-body{padding:10px 12px 13px}
.pcard.sm .meta{font-size:.68rem}
.pcard.sm h3{font-size:.85rem;line-height:1.35;margin-top:4px}
.pcard.gated{cursor:default}
.pcard.gated:hover{border-color:var(--line)}
.uc-tag{font-size:.68rem;letter-spacing:.11em;text-transform:uppercase;color:var(--muted);
  border:1px solid var(--line);border-radius:3px;padding:3px 10px}

/* ---------- platform card in the expertise grid ---------- */
.card.plat{border-color:#C9D3DA;background:#F4F7F9;position:relative}
.card.plat svg{color:var(--gold)}
.card.plat .plat-lab{display:inline-block;margin-top:11px;font-size:.66rem;letter-spacing:.11em;
  text-transform:uppercase;color:var(--gold)}
.card.plat:hover{border-color:var(--gold)}

/* ---------- footer LinkedIn ---------- */
.site-foot a.li{display:inline-flex;align-items:center;gap:7px}
.li-ico{width:16px;height:16px;flex:none}

@media (max-width:900px){
  .g5{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:640px){
  .g5{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .pcard.sm h3{font-size:.8rem}
}

.g4{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
@media (max-width:900px){.g4{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:640px){.g4{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}}

/* ---------- case study carousel ---------- */
.carousel{position:relative}
.c-track{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;
  scroll-behavior:smooth;padding-bottom:4px;scrollbar-width:none}
.c-track::-webkit-scrollbar{display:none}
.c-track > *{flex:0 0 calc((100% - 3*14px)/4);scroll-snap-align:start}
.c-nav{position:absolute;top:50%;transform:translateY(-50%);width:34px;height:34px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);color:var(--navy);
  font-size:1.25rem;line-height:1;cursor:pointer;z-index:5;
  box-shadow:0 2px 8px rgba(23,55,75,.12)}
.c-nav:hover{border-color:var(--navy)}
.c-nav[disabled]{opacity:.25;cursor:default;box-shadow:none}
.c-nav.prev{left:-15px}
.c-nav.next{right:-15px}
@media (max-width:900px){
  .c-track > *{flex-basis:calc((100% - 2*14px)/3)}
}
@media (max-width:640px){
  .c-track > *{flex-basis:calc((100% - 14px)/2)}
  .c-nav{display:none}
}