:root{
  --ink:#0e1726; --ink-2:#42506b; --ink-3:#7c8899;
  --navy:#0b1f3a; --navy-2:#132c4f; --gold:#c9a961; --gold-soft:#e8d7ae;
  --bg:#f6f7f9; --card:#fff; --line:#e6e9ef;
  --surface-1:#ffffff; --surface-2:#dfe7f2; --surface-line:rgba(14,23,38,.08);
  --shadow:0 1px 2px rgba(14,23,38,.05),0 10px 26px rgba(14,23,38,.08);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);line-height:1.6;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  -webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
section{padding:72px 0;background:var(--surface-1);position:relative}
section.alt{background:var(--surface-2)}
section.alt::before{content:"";position:absolute;inset:0 0 auto 0;height:1px;background:var(--surface-line)}
section.alt::after{content:"";position:absolute;inset:auto 0 0 0;height:1px;background:var(--surface-line)}
section + section::before{content:"";position:absolute;inset:0 0 auto 0;height:1px;background:var(--surface-line)}
.eyebrow{font-size:13px;letter-spacing:.18em;color:var(--gold);font-weight:600;margin:0 0 12px}
h2{font-size:30px;line-height:1.35;margin:0 0 10px;letter-spacing:-.01em}
.lead{color:var(--ink-2);font-size:16px;margin:0 0 36px;max-width:62ch}

/* top bar */
.bar{position:sticky;top:0;z-index:40;backdrop-filter:saturate(180%) blur(14px);
  background:rgba(246,247,249,.82);border-bottom:1px solid var(--line)}
.bar .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.02em}
.brand img{height:26px;width:auto;display:block}
.brand .bn{font-size:16px;font-weight:700;letter-spacing:.02em}
.hero-logo{height:84px;width:auto;margin:0 0 26px}
.foot-logo{height:66px;width:auto;margin:0 0 18px}
.brand small{font-weight:500;color:var(--ink-3);letter-spacing:.08em}
nav{display:flex;gap:26px}
nav a{color:var(--ink-2);text-decoration:none;font-size:14px}
nav a:hover{color:var(--navy)}

/* hero */
.hero{color:#fff;padding:104px 0 92px;position:relative;overflow:hidden;background:#0a1a30}
.hero .bg{position:absolute;inset:0;background-image:var(--hero);background-size:cover;
  background-position:center 28%;opacity:.55;filter:saturate(.85) contrast(1.06)}
.hero .veil{position:absolute;inset:0;background:
  linear-gradient(100deg,rgba(6,16,30,.97) 0%,rgba(8,24,45,.92) 34%,rgba(10,30,56,.72) 66%,rgba(10,30,56,.58) 100%)}
.hero .veil::after{content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,169,97,.55),transparent)}
.hero .wrap{position:relative;z-index:1}
.hero .kicker{font-size:13px;letter-spacing:.2em;color:var(--gold-soft);margin-bottom:18px}
.hero h1{font-size:clamp(34px,5vw,56px);line-height:1.15;margin:0 0 18px;letter-spacing:-.015em;font-weight:700}
.hero h1 span{color:var(--gold)}
.hero p{font-size:17px;color:rgba(255,255,255,.78);margin:0;max-width:34em}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:52px}
.stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:20px}
.stat b{display:block;font-size:34px;font-weight:700;letter-spacing:-.02em;line-height:1.1}
.stat b i{font-style:normal;font-size:15px;font-weight:500;color:rgba(255,255,255,.6);margin-left:4px}
.stat span{display:block;margin-top:6px;font-size:13px;color:rgba(255,255,255,.62);letter-spacing:.04em}

/* generic cards */
.grid{display:grid;gap:16px}
.g3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--card);border:1px solid rgba(14,23,38,.08);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card h3{margin:8px 0 6px;font-size:18px}
.card p{margin:0;color:var(--ink-2);font-size:14.5px}
.card .idx{font-size:12px;font-weight:700;color:var(--gold);letter-spacing:.14em}

/* projects table */
.projects{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.p{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#fff;
  border:1px solid rgba(14,23,38,.06);border-radius:14px;padding:16px 18px;box-shadow:var(--shadow)}
.p b{font-size:15px;font-weight:600}
.p em{font-style:normal;font-size:12.5px;color:var(--ink-3);display:block;margin-top:2px}
.badge{flex:none;background:var(--navy);color:#fff;border-radius:999px;padding:5px 11px;font-size:13px;font-weight:600}
.badge.gold{background:linear-gradient(135deg,#c9a961,#b18f4d)}

/* cases list */
.cases{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.case{display:block;width:100%;text-align:left;border:1px solid var(--line);background:#fff;
  border-radius:var(--radius);overflow:hidden;cursor:pointer;font-family:inherit;padding:0;
  box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.case:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(14,23,38,.13)}
.case .cover{aspect-ratio:16/9;overflow:hidden;background:#e9edf3;position:relative}
.case .cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case:hover .cover img{transform:scale(1.04)}
.case .cover .n{position:absolute;right:10px;top:10px;background:rgba(10,26,48,.72);color:#fff;
  font-size:12px;padding:4px 9px;border-radius:999px;backdrop-filter:blur(4px)}
.case .body{padding:16px 18px 18px}
.case h3{margin:0 0 6px;font-size:17px}
.case .meta{display:flex;gap:12px;font-size:12.5px;color:var(--ink-3)}
.case .go{margin-top:10px;font-size:13px;color:var(--navy);font-weight:600}
.case .go::after{content:" \2192"}

/* case detail */
body.detail .bar,body.detail header,body.detail > section:not(#case-detail),body.detail footer{display:none}
#case-detail{padding:32px 0 72px}
#case-detail[hidden]{display:none}
.back{border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 16px;font-size:14px;
  color:var(--ink-2);cursor:pointer;font-family:inherit;transition:.18s}
.back:hover{border-color:#c9d2e0;color:var(--navy)}
.back.bottom{margin-top:30px}
.case-head h2{margin:20px 0 8px;font-size:30px}
.case-head .meta{display:flex;flex-wrap:wrap;gap:16px;color:var(--ink-2);font-size:14px;margin-bottom:24px}
.case-head .meta b{color:var(--ink);font-weight:600}
.slots{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.slot{position:relative;aspect-ratio:4/3;border-radius:12px;overflow:hidden;background:#e9edf3;cursor:zoom-in}
.slot img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.slot:hover img{transform:scale(1.05)}
.slot i{position:absolute;left:8px;bottom:8px;font-style:normal;font-size:11px;color:#fff;
  background:rgba(10,26,48,.62);padding:2px 7px;border-radius:6px}
.slot.ph{border:1.5px dashed #cfd6e2;background:#fbfcfe;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:4px;color:#9aa6b8;font-size:12.5px;cursor:default}
.slot.ph b{font-size:20px;color:#c3ccda;font-weight:600;line-height:1}

/* timeline */
.tl{position:relative;margin-top:8px;padding-left:26px}
.tl::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(var(--gold),#e3e7ee)}
.tl li{list-style:none;position:relative;padding:0 0 22px 8px}
.tl li:last-child{padding-bottom:0}
.tl li::before{content:"";position:absolute;left:-26px;top:7px;width:10px;height:10px;border-radius:50%;
  background:#fff;border:2px solid var(--gold)}
.tl b{display:block;font-size:15.5px}
.tl span{color:var(--ink-2);font-size:14px}

footer{background:var(--navy);color:rgba(255,255,255,.72);padding:44px 0;font-size:14px}
footer b{color:#fff;font-size:16px;display:block;margin-bottom:6px}

.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.6,.2,1)}
.reveal.in{opacity:1;transform:none}

#lb{position:fixed;inset:0;background:rgba(8,14,24,.92);display:none;align-items:center;
  justify-content:center;z-index:90;padding:24px;cursor:zoom-out}
#lb.on{display:flex}
#lb img{max-width:min(1200px,92vw);max-height:82vh;border-radius:10px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
#lb .cap{position:absolute;bottom:22px;color:rgba(255,255,255,.7);font-size:13px}

@media (max-width:900px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .g3,.projects{grid-template-columns:repeat(2,1fr)}
  .cases{grid-template-columns:1fr}
  .slots{grid-template-columns:repeat(2,1fr)}
  nav{display:none}
}
/* mobile refinements */
html{-webkit-text-size-adjust:100%}
body{overflow-x:hidden;padding-bottom:env(safe-area-inset-bottom)}
.bar{padding-top:env(safe-area-inset-top)}
button,a{-webkit-tap-highlight-color:transparent;touch-action:manipulation}

.chips{display:none}
@media (max-width:900px){
  .chips{display:flex;gap:6px;padding:9px 14px;overflow-x:auto;background:#fff;
    border-bottom:1px solid var(--line);position:sticky;top:calc(60px + env(safe-area-inset-top));
    z-index:39;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .chips::-webkit-scrollbar{display:none}
  .chips a{flex:none;font-size:12.5px;color:var(--ink-2);text-decoration:none;border:1px solid var(--line);
    border-radius:999px;padding:6px 11px;background:#fff;white-space:nowrap;line-height:1.35}
  .chips a:active{background:var(--navy);border-color:var(--navy);color:#fff}
  body.detail .chips{display:none}
}
@media (max-width:560px){
  .wrap{padding:0 18px}
  .bar .wrap{height:56px}
  .chips{top:calc(56px + env(safe-area-inset-top))}
  .brand{font-size:15px}
  .brand img{height:22px}
  .brand .bn{font-size:14.5px}
  .brand small{font-size:11px}
  .hero-logo{height:66px;margin-bottom:18px}
  .foot-logo{height:54px;margin-bottom:14px}
  section{padding:44px 0}
  .hero{padding:56px 0 48px}
  .hero h1{font-size:32px;line-height:1.22}
  .hero p{font-size:15px;max-width:100%}
  .hero .kicker{font-size:11.5px;letter-spacing:.16em;margin-bottom:12px}
  .stats{gap:10px;margin-top:26px}
  .stat{padding:14px;border-radius:12px}
  .stat b{font-size:26px}
  .stat b i{font-size:12px}
  .stat span{font-size:11.5px;margin-top:4px}
  h2{font-size:22px}
  .lead{font-size:14px;margin-bottom:22px}
  .projects,.g3{grid-template-columns:1fr}
  .card{padding:18px}
  .card h3{font-size:16px}
  .card p{font-size:14px}
  .p{padding:14px 16px}
  .case .body{padding:14px 16px}
  .case h3{font-size:15.5px}
  .case .go{margin-top:8px}
  .back{padding:8px 14px;font-size:13px}
  .case-head h2{font-size:22px;margin:16px 0 6px}
  .case-head .meta{gap:10px 14px;font-size:13px;margin-bottom:16px}
  .slots{gap:8px}
  .tl{padding-left:22px}
  .tl b{font-size:15px}
  .tl span{font-size:13.5px}
  .tl li{padding-bottom:18px}
  footer{padding:34px 0}
  footer b{font-size:15px}
  #lb{padding:12px}
  #lb img{max-height:76vh;border-radius:8px}
  #lb{flex-direction:column}
  #lb .cap{position:static;margin-top:12px;text-align:center;font-size:12px}
}

/* print: list only, one section per page */
@media print{
  section,section.alt{background:#fff!important}
  section.alt::before,section.alt::after{display:none}
  .bar{display:flex}
  nav{display:none}
  .reveal{opacity:1!important;transform:none!important}
  .hero{padding:44px 0 40px;min-height:152mm;display:flex;align-items:center}
  .hero h1{font-size:46px}
  .hero p{font-size:15px}
  .stats{margin-top:28px;grid-template-columns:repeat(4,1fr)}
  .stat{padding:14px}
  .stat b{font-size:28px}
  section{padding:34px 0;break-before:page}
  section h2{font-size:26px;margin-bottom:6px}
  .lead{margin-bottom:20px;font-size:14.5px}
  .g3{grid-template-columns:repeat(3,1fr)}
  .projects{grid-template-columns:repeat(3,1fr)}
  .cases{grid-template-columns:repeat(2,1fr)}
  .card{padding:16px;box-shadow:none}
  .case,.slot{break-inside:avoid}
  #case-detail{display:none!important}
  @page{size:A4 landscape;margin:10mm}
}

/* ---------- capability carousel ---------- */
.carousel{position:relative;border-radius:20px;overflow:hidden;background:#0b1f3a;
  box-shadow:0 18px 50px rgba(14,23,38,.18);touch-action:pan-y}
.track{display:flex;transition:transform .65s cubic-bezier(.22,.61,.36,1);will-change:transform}
.slide{flex:0 0 100%;position:relative;aspect-ratio:16/9;margin:0;overflow:hidden}
.slide img{width:100%;height:100%;object-fit:cover;display:block}
.slide.contain{background:#0a1626}
.slide.contain .blur{position:absolute;inset:-60px;background-size:cover;background-position:center;
  filter:blur(34px) brightness(.32) saturate(.85);transform:scale(1.15)}
.slide.contain img{position:relative;object-fit:contain}
.slide figcaption{position:absolute;inset:auto 0 0 0;padding:70px 28px 22px;color:#fff;
  background:linear-gradient(to top,rgba(5,13,24,.92),rgba(5,13,24,.42) 58%,transparent)}
.slide .tag{display:inline-block;font-size:11.5px;letter-spacing:.14em;padding:3px 10px;margin-bottom:8px;
  border:1px solid rgba(201,169,97,.5);border-radius:999px;color:var(--gold-soft);
  background:rgba(201,169,97,.14)}
.slide h3{margin:0 0 4px;font-size:19px;letter-spacing:.01em}
.slide p{margin:0;font-size:13.5px;color:rgba(255,255,255,.76)}
.cbtn{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(255,255,255,.26);background:rgba(8,18,32,.42);color:#fff;font-size:26px;
  line-height:1;cursor:pointer;display:grid;place-items:center;backdrop-filter:blur(6px);
  transition:background .2s,border-color .2s;font-family:inherit}
.cbtn:hover{background:rgba(8,18,32,.72);border-color:rgba(255,255,255,.48)}
.cbtn.prev{left:14px}.cbtn.next{right:14px}
.dots{position:absolute;right:20px;bottom:20px;display:flex;gap:7px}
.dots button{width:7px;height:7px;border:0;padding:0;border-radius:50%;cursor:pointer;
  background:rgba(255,255,255,.42);transition:width .25s,background .25s}
.dots button.on{width:20px;border-radius:4px;background:var(--gold)}
@media (max-width:560px){
  .carousel{border-radius:14px}
  .slide{aspect-ratio:4/3}
  .slide figcaption{padding:54px 16px 15px}
  .slide h3{font-size:16px}
  .slide p{font-size:12.5px;line-height:1.5}
  .cbtn{width:34px;height:34px;font-size:20px}
  .cbtn.prev{left:8px}.cbtn.next{right:8px}
  .dots{right:14px;bottom:12px}
}
@media print{
  .carousel{box-shadow:none;border-radius:12px}
  .cbtn,.dots{display:none}
  .slide:not(:first-child){display:none}
}