:root{
  --bg:#07110e;
  --bg2:#0a1a15;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.09);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.72);
  --line: rgba(255,255,255,.12);
  --accent:#66f5c6;
  --accent2:#a6ff7a;
  --shadow: 0 18px 55px rgba(0,0,0,.46);
  --radius: 18px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  color:var(--text);
  background: linear-gradient(180deg, var(--bg), var(--bg2));
  font-family: Inter, "Noto Sans SC", system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  overflow-x:hidden;
}
a{color:inherit; text-decoration:none}
.container{width:min(1180px, 92vw); margin:0 auto}
.muted{color:var(--muted)}
.small{font-size:12px}

.topbar{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(14px);
  background: rgba(7,17,14,.62);
  border-bottom:1px solid var(--line);
}
.topbar__inner{display:flex; align-items:center; justify-content:space-between; gap:14px; padding:14px 0}

.brand{display:flex; align-items:center; gap:12px}
.brand__mark{
  width:14px;height:14px;border-radius:999px;
  background: radial-gradient(circle at 30% 30%, #fff, rgba(255,255,255,.35) 30%, rgba(102,245,198,.95) 70%);
  box-shadow: 0 0 0 6px rgba(102,245,198,.10);
}
.brand__name{font-weight:1000; letter-spacing:.2px}

.nav{display:flex; gap:14px; align-items:center}
.nav a{color:var(--muted); font-weight:900; font-size:13px; letter-spacing:.02em}
.nav a:hover{color:var(--text)}

.topbar__actions{display:flex; gap:10px; align-items:center}

.chip{
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
  color:var(--text);
  padding:10px 12px;
  border-radius:999px;
  font-weight:1000;
  cursor:pointer;
}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:14px 16px;
  border-radius:999px;
  font-weight:1000;
  border:1px solid rgba(255,255,255,.18);
  background: linear-gradient(180deg, rgba(102,245,198,.22), rgba(102,245,198,.12));
  box-shadow: 0 12px 36px rgba(0,0,0,.36);
  transition: transform .15s ease, border .15s ease, background .15s ease;
}
.btn:hover{transform: translateY(-1px); border-color: rgba(102,245,198,.60)}
.btn--ghost{background: rgba(255,255,255,.045); border-color: rgba(255,255,255,.18)}
.btn--ghost:hover{border-color: rgba(166,255,122,.55)}
.btn--sm{padding:10px 12px; font-size:13px}

.link{color: rgba(102,245,198,.95); font-weight:1000}
.link:hover{color:#fff}

.section{padding:70px 0}
.section--tint{
  background:
    radial-gradient(1100px 520px at 12% 10%, rgba(102,245,198,.12), transparent 62%),
    radial-gradient(980px 520px at 88% 18%, rgba(166,255,122,.09), transparent 62%),
    linear-gradient(180deg, rgba(255,255,255,.03), transparent 60%);
}

.hero{
  position:relative;
  padding:64px 0 28px;
  overflow:hidden;
  background:
    radial-gradient(900px 480px at 50% 85%, rgba(255,255,255,.05), transparent 60%);
}
.hero__bg{
  position:absolute; inset:0;
  background-size:cover;
  background-position:center;
  transform: scale(1.05);
  filter: saturate(1.05) contrast(1.05);
  transition: opacity .8s ease, transform 1.2s ease;
  opacity:.9;
}
.hero__bg.is-switching{opacity:.35; transform: scale(1.1)}
.hero__scrim{
  position:absolute; inset:0;
  background: linear-gradient(90deg, rgba(7,17,14,.88) 0%, rgba(7,17,14,.70) 45%, rgba(7,17,14,.88) 100%);
}
.hero__grid{
  position:relative;
  display:grid;
  grid-template-columns: 1.14fr .86fr;
  gap:22px;
  align-items:stretch;
}

.pill{
  display:inline-flex; align-items:center; gap:10px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.18);
  color: rgba(255,255,255,.82);
  font-weight:1000;
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.pill__dot{
  width:8px;height:8px;border-radius:999px;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(102,245,198,.12);
}
.hero__title{margin:14px 0 10px; font-size:48px; line-height:1.06; letter-spacing:-.02em}
.hero__titleAccent{
  display:block;
  background: linear-gradient(90deg, rgba(102,245,198,.95), rgba(166,255,122,.92));
  -webkit-background-clip:text; background-clip:text;
  color:transparent;
}
.hero__lead{color:var(--muted); font-size:16px; line-height:1.72; margin:0 0 18px}
.hero__ctas{display:flex; gap:12px; flex-wrap:wrap; margin-top:12px}

.card{
  border:1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  padding:16px;
}
.lift{transition: transform .18s ease, border .18s ease, background .18s ease}
.lift:hover{transform: translateY(-2px); border-color: rgba(255,255,255,.22); background: rgba(255,255,255,.07)}

.metrics{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:12px;
  margin-top:18px;
}
.metric__k{font-weight:1000; font-size:20px; letter-spacing:-.01em}
.metric__v{margin-top:6px; font-weight:900}
.metric__s{margin-top:4px; color:var(--muted); font-weight:700; font-size:12px; line-height:1.55}

.hero__thumbs{
  display:flex; gap:10px; flex-wrap:wrap;
  margin-top:14px;
}
.thumb{
  width:46px;height:46px;border-radius:14px;
  border:1px solid rgba(255,255,255,.16);
  background-size:cover; background-position:center;
  cursor:pointer;
  opacity:.85;
  transition: transform .15s ease, opacity .15s ease, border .15s ease;
}
.thumb:hover{transform: translateY(-1px); opacity:1; border-color: rgba(102,245,198,.55)}
.thumb.is-active{opacity:1; border-color: rgba(166,255,122,.55); box-shadow: 0 0 0 6px rgba(166,255,122,.10)}
.hero__tiny{margin-top:10px; color: rgba(255,255,255,.55); font-size:12px}

.panel{position:relative; background: linear-gradient(180deg, rgba(255,255,255,.09), rgba(255,255,255,.04)); border:1px solid rgba(255,255,255,.14); border-radius: 24px; box-shadow: var(--shadow)}
.badge{
  display:inline-flex; width:max-content;
  padding:6px 10px;
  border-radius:999px;
  font-weight:1000;
  font-size:12px;
  background: rgba(166,255,122,.10);
  border:1px solid rgba(166,255,122,.28);
  color: rgba(255,255,255,.82);
}
.panel__title{margin-top:10px; font-weight:1000; font-size:18px}
.chain{display:grid; gap:10px; margin-top:14px}
.chain__item{display:flex; gap:12px; align-items:flex-start; padding:12px; border-radius:16px; background: rgba(255,255,255,.045); border:1px solid rgba(255,255,255,.10)}
.chain__num{width:28px;height:28px;border-radius:10px; display:grid; place-items:center; font-weight:1000; background: rgba(102,245,198,.14); border:1px solid rgba(102,245,198,.35)}
.chain__t{font-weight:1000}
.chain__d{margin-top:2px; color:var(--muted); font-size:13px; line-height:1.5}
.panel__foot{display:flex; justify-content:space-between; align-items:center; gap:10px; margin-top:14px; flex-wrap:wrap}

.orb{position:absolute; border-radius:999px; filter: blur(2px); opacity:.9; pointer-events:none}
.orb--a{width:280px;height:280px; right:-110px; top:-95px; background: radial-gradient(circle at 30% 30%, rgba(102,245,198,.55), rgba(102,245,198,.08) 60%, transparent 72%)}
.orb--b{width:320px;height:320px; left:-140px; bottom:-140px; background: radial-gradient(circle at 30% 30%, rgba(166,255,122,.45), rgba(166,255,122,.08) 62%, transparent 74%)}

.sectionHead{margin-bottom:18px}
.sectionHead h2{margin:0 0 8px; font-size:26px; letter-spacing:-.01em}
.sectionSub{margin:0; color:var(--muted); line-height:1.65}

.grid{display:grid; gap:14px; margin-top:18px}
.grid--2{grid-template-columns: 1fr 1fr}
.grid--3{grid-template-columns: repeat(3, 1fr)}

.bullets{margin:10px 0 0; padding-left:18px; color:var(--muted); line-height:1.7}
.bullets li{margin:6px 0}

.refs{margin-top:12px; display:flex; gap:8px; flex-wrap:wrap}
.refPill{
  padding:6px 10px; border-radius:999px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.16);
  color: rgba(255,255,255,.78);
  font-weight:900; font-size:12px;
}

.flyway{margin-top:14px}
.flyway__head{display:flex; justify-content:space-between; align-items:flex-end; gap:10px; flex-wrap:wrap}
.flyway__nodes{margin-top:12px; display:flex; gap:10px; flex-wrap:wrap}
.node{
  padding:10px 12px; border-radius:999px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.04);
  cursor:pointer;
  font-weight:900; font-size:13px;
  transition: transform .15s ease, border .15s ease, background .15s ease;
}
.node:hover{transform: translateY(-1px); border-color: rgba(102,245,198,.55)}
.node.is-active{border-color: rgba(166,255,122,.55); background: rgba(166,255,122,.10)}
.flyway__info{margin-top:12px; color: rgba(255,255,255,.84); line-height:1.6}

.tabs{padding:0; overflow:hidden}
.tabs__bar{display:flex; gap:0; border-bottom:1px solid rgba(255,255,255,.12)}
.tab{
  flex:1;
  padding:14px 12px;
  background: transparent;
  border:0;
  color: rgba(255,255,255,.80);
  font-weight:1000;
  cursor:pointer;
}
.tab.is-active{background: rgba(255,255,255,.05); color: #fff}
.tabs__content{padding:16px}
.tabPanel{display:none}
.tabPanel.is-active{display:block}

.callout{
  margin-top:16px;
  display:flex; gap:12px; align-items:flex-start;
  border:1px solid rgba(102,245,198,.30);
  background: rgba(102,245,198,.08);
  border-radius: 18px;
  padding:14px;
}
.callout__icon{width:28px;height:28px;border-radius:10px; display:grid; place-items:center; font-weight:1000; background: rgba(102,245,198,.16); border:1px solid rgba(102,245,198,.40)}
.callout__title{font-weight:1000}
.callout__text{color: rgba(255,255,255,.80); margin-top:3px; line-height:1.6}

.ctaBand{
  margin-top:18px;
  display:flex; justify-content:space-between; align-items:center; gap:12px;
  border:1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.05);
  border-radius: 22px;
  padding:16px;
}
.ctaBand__t{font-weight:1000}
.ctaBand__d{color:var(--muted); margin-top:4px; line-height:1.55}

.footer{
  margin-top:24px;
  border-top:1px solid var(--line);
  padding-top:18px;
  display:flex; justify-content:space-between; align-items:flex-start; gap:14px;
}
.footer__brand{display:flex; align-items:center; gap:12px}
.footer__name{font-weight:1000}
.footer__note{color:var(--muted); margin-top:6px; max-width:560px; line-height:1.6}

.lightbox{
  position:fixed; inset:0; z-index:80;
  display:none;
}
.lightbox.is-open{display:block}
.lightbox__backdrop{position:absolute; inset:0; background: rgba(0,0,0,.65); backdrop-filter: blur(10px)}
.lightbox__panel{
  position:relative;
  width:min(980px, 92vw);
  margin: 7vh auto;
  border-radius: 22px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(10,26,21,.92);
  box-shadow: var(--shadow);
  padding:16px;
}
.lightbox__close{
  position:absolute; top:10px; right:12px;
  width:38px; height:38px;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.06);
  color:#fff; font-size:22px;
  cursor:pointer;
}
.lightbox__grid{display:grid; grid-template-columns: 1.1fr .9fr; gap:14px; align-items:stretch}
.lightbox__img{width:100%; height: 360px; object-fit: cover; border-radius: 18px; border:1px solid rgba(255,255,255,.12)}
.lightbox__copy{padding:4px 2px}
.lightbox__nav{display:flex; gap:10px; margin-top:12px; flex-wrap:wrap}

.reveal{opacity:0; transform: translateY(10px); transition: opacity .55s ease, transform .55s ease}
.reveal.in{opacity:1; transform: translateY(0)}

@media (max-width: 980px){
  .nav{display:none}
  .hero__grid{grid-template-columns: 1fr}
  .metrics{grid-template-columns: 1fr}
  .grid--2{grid-template-columns: 1fr}
  .grid--3{grid-template-columns: 1fr}
  .hero__title{font-size:38px}
  .lightbox__grid{grid-template-columns:1fr}
  .lightbox__img{height: 240px}
}

.pvGallery{margin-top:14px}
.pvGallery__head{display:flex; justify-content:space-between; align-items:flex-end; gap:10px; flex-wrap:wrap}
.pvGallery__grid{margin-top:12px; display:grid; grid-template-columns: 1fr 1fr; gap:12px}
.pvFigure{margin:0}
.pvFigure img{
  width:100%;
  height:220px;
  object-fit:cover;
  border-radius:16px;
  border:1px solid rgba(255,255,255,.12);
  transition: transform .18s ease, border .18s ease;
}
.pvFigure img:hover{transform: translateY(-2px); border-color: rgba(102,245,198,.55)}
@media (max-width: 980px){
  .pvGallery__grid{grid-template-columns:1fr}
  .pvFigure img{height:200px}
}

/* Tongzhou Bay case card */
.caseCard{
  margin-top:16px;
  display:grid;
  grid-template-columns: 1fr 1.05fr;
  gap:14px;
  padding:16px;
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
}
.caseCard__media{
  position:relative;
  border-radius:18px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.16);
}
.caseCard__media img{
  width:100%;
  height:100%;
  min-height:240px;
  object-fit:cover;
  display:block;
  transform: scale(1.01);
  cursor:pointer;
}
.caseCard__zoom{
  position:absolute;
  right:12px;
  bottom:12px;
}
.caseBullets{margin-top:10px}
.caseChain{margin-top:12px}

/* PV gallery (clickable lightbox) */
.pvGallery{margin-top:14px}
.pvGallery__head{display:flex; justify-content:space-between; align-items:flex-end; gap:10px; flex-wrap:wrap}
.pvGallery__grid{margin-top:12px; display:grid; grid-template-columns: 1fr 1fr; gap:12px}

.pvItem{
  position:relative;
  border-radius:16px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.14);
  cursor:pointer;
}
.pvItem img{
  width:100%;
  height:220px;
  object-fit:cover;
  display:block;
  transition: transform .18s ease, filter .18s ease;
}
.pvItem:hover img{transform: scale(1.03); filter: saturate(1.05) contrast(1.03)}
.pvCap{
  position:absolute;
  left:10px;
  bottom:10px;
  right:10px;
  padding:10px 10px;
  border-radius:14px;
  background: rgba(0,0,0,.45);
  border:1px solid rgba(255,255,255,.12);
  backdrop-filter: blur(10px);
  color: rgba(255,255,255,.88);
  font-weight:800;
  font-size:12px;
  line-height:1.35;
}

@media (max-width: 980px){
  .caseCard{grid-template-columns:1fr}
  .pvGallery__grid{grid-template-columns:1fr}
  .pvItem img{height:200px}
}

/* Supplementary files */
.supp__grid{display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-top:12px}
.supp__item{display:flex; gap:12px; align-items:flex-start; padding:12px; border-radius:16px; border:1px solid rgba(255,255,255,.10); background: rgba(0,0,0,.10)}
.supp__meta{flex:1}
.supp__name{font-weight:1000; letter-spacing:.2px}
.supp__actions{display:flex; gap:10px; flex-wrap:wrap}
@media (max-width: 860px){.supp__grid{grid-template-columns:1fr}}


/* Support row (Action section) */
.supportRow{display:flex;justify-content:center;gap:12px;margin:14px 0 22px;}