:root{
  --bg:#080B10;--bg2:#0C121A;--surface:#111823;--surface2:#161F2C;
  --line:rgba(255,255,255,.08);--line2:rgba(255,255,255,.16);
  --text:#E9EEF4;--muted:#8695A6;--dim:#5C6B7D;
  --accent:#FFB020;--accent2:#2E9BFF;--radius:16px;
  --maxw:1240px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-size:15px;line-height:1.65;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.sec{padding:72px 0}
.sec.sm{padding:48px 0}

/* ---------- NAV ---------- */
.nav{position:sticky;top:0;z-index:90;background:rgba(8,11,16,.88);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:32px;height:70px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:17px;letter-spacing:-.3px;flex-shrink:0}
.logo-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--accent),#FF7A00);
  display:grid;place-items:center;font-size:15px;color:#1a1200;box-shadow:0 0 22px rgba(255,176,32,.35)}
.logo small{display:block;font-size:9px;font-weight:700;color:var(--muted);letter-spacing:1.5px;line-height:1.2}
.nav-links{display:flex;gap:4px;font-size:14px;font-weight:500;color:#B7C3D0;flex:1}
.nav-item{position:relative}
.nav-item>a{display:block;padding:10px 14px;border-radius:8px;transition:.2s;white-space:nowrap}
.nav-item:hover>a{color:#fff;background:rgba(255,255,255,.05)}
.nav-item.on>a{color:var(--accent)}
.drop{position:absolute;top:100%;left:0;min-width:260px;background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:10px;opacity:0;visibility:hidden;transform:translateY(8px);transition:.22s;
  box-shadow:0 24px 60px rgba(0,0,0,.6);margin-top:8px}
.nav-item:hover .drop{opacity:1;visibility:visible;transform:translateY(0)}
.drop a{display:block;padding:9px 13px;border-radius:9px;font-size:13.5px;color:#B7C3D0;transition:.16s}
.drop a:hover{background:rgba(255,176,32,.1);color:#fff}
.nav-cta{display:flex;align-items:center;gap:11px;flex-shrink:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:999px;
  font-size:13.5px;font-weight:650;transition:.22s;white-space:nowrap;border:1px solid transparent}
.btn-amber{background:var(--accent);color:#1a1200;box-shadow:0 6px 20px rgba(255,176,32,.26)}
.btn-amber:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgba(255,176,32,.4)}
.btn-ghost{border-color:var(--line2);color:#D6DFE9}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-sm{padding:8px 16px;font-size:12.5px}
.burger{display:none;font-size:22px;padding:6px 10px}

/* ---------- HERO ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#0A1018,#150F05 55%,#0A1018)}
.hero::after{content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse 80% 70% at 15% 0%,rgba(255,176,32,.16),transparent 62%),
  linear-gradient(180deg,rgba(8,11,16,.42) 0%,rgba(8,11,16,.72) 60%,var(--bg) 100%)}
.hero.slim{padding:0}
.hero-in{position:relative;z-index:3;padding:92px 0 74px}
.hero>.bgimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  filter:grayscale(.55) brightness(.42) contrast(1.05)}
.hero.slim .hero-in{padding:64px 0 56px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;
  background:rgba(255,176,32,.1);border:1px solid rgba(255,176,32,.3);color:var(--accent);
  font-size:11.5px;font-weight:800;letter-spacing:1.3px;text-transform:uppercase;margin-bottom:24px}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.07;font-weight:800;letter-spacing:-1.5px;max-width:880px;margin-bottom:18px}
h1 em{font-style:normal;color:var(--accent);text-shadow:0 0 44px rgba(255,176,32,.42)}
.lead{max-width:660px;color:#A9B6C4;font-size:16.5px;margin-bottom:30px}
.hero-btns{display:flex;gap:13px;flex-wrap:wrap}
.stats{display:flex;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:26px;margin-top:44px}
.stat{padding-right:42px;margin-right:42px;border-right:1px solid var(--line)}
.stat:last-child{border:none;padding-right:0;margin-right:0}
.stat b{display:block;font-size:28px;font-weight:800;letter-spacing:-1px;color:#fff}
.stat span{font-size:11.5px;color:var(--muted);letter-spacing:.7px;text-transform:uppercase}

/* ---------- BREADCRUMB ---------- */
.crumb{display:flex;align-items:center;gap:9px;font-size:12.5px;color:var(--muted);flex-wrap:wrap;padding:20px 0 0}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:var(--dim)}
.crumb .now{color:#C7D3DF}

/* ---------- SECTION HEAD ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:34px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;letter-spacing:-.9px}
.sec-head p{color:var(--muted);font-size:14.5px;margin-top:8px;max-width:640px}
.sec-head .kicker{font-size:11.5px;font-weight:800;letter-spacing:1.6px;text-transform:uppercase;color:var(--accent);margin-bottom:10px;display:block}

/* ---------- CARD GRIDS ---------- */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* ---------- MEDIA ---------- */
.media{position:relative;background:linear-gradient(150deg,#1B2430,#0E141C);overflow:hidden;isolation:isolate}
.media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  filter:grayscale(.82) contrast(1.06) brightness(.78);mix-blend-mode:luminosity;
  transition:transform .7s cubic-bezier(.2,.8,.2,1)}
.media::before{content:'';position:absolute;inset:0;z-index:1;
  background:var(--tint,linear-gradient(150deg,rgba(255,176,32,.42),rgba(255,122,0,.1)));mix-blend-mode:soft-light}
.media::after{content:'';position:absolute;inset:0;z-index:2;
  background:linear-gradient(180deg,rgba(8,11,16,0) 34%,rgba(8,11,16,.62) 80%,rgba(8,11,16,.9) 100%)}
.media:hover img{transform:scale(1.05)}
.media.plain img{filter:none;mix-blend-mode:normal}
.media.plain::before{display:none}
.media.plain::after{background:linear-gradient(180deg,rgba(8,11,16,0) 60%,rgba(8,11,16,.45) 100%)}
.tint-overseas{--tint:linear-gradient(150deg,rgba(255,196,60,.6),rgba(190,60,255,.35))}
.tint-commercial{--tint:linear-gradient(150deg,rgba(255,150,30,.6),rgba(255,60,90,.3))}
.tint-facade{--tint:linear-gradient(150deg,rgba(60,190,255,.6),rgba(120,80,255,.32))}
.tint-bridge{--tint:linear-gradient(150deg,rgba(150,90,255,.6),rgba(40,200,255,.32))}
.tint-stadium{--tint:linear-gradient(150deg,rgba(60,230,150,.55),rgba(40,180,255,.3))}
.tint-culture{--tint:linear-gradient(150deg,rgba(255,90,160,.6),rgba(255,170,60,.32))}
.tint-transport{--tint:linear-gradient(150deg,rgba(40,140,255,.6),rgba(60,220,255,.3))}
.tint-public{--tint:linear-gradient(150deg,rgba(40,210,200,.55),rgba(50,120,255,.32))}
.tint-hotel{--tint:linear-gradient(150deg,rgba(255,170,80,.6),rgba(255,90,120,.32))}
.tint-municipal{--tint:linear-gradient(150deg,rgba(110,120,255,.6),rgba(50,200,255,.3))}
.tint-pixel{--tint:linear-gradient(150deg,rgba(255,150,40,.55),rgba(255,60,140,.3))}
.tint-mesh{--tint:linear-gradient(150deg,rgba(60,180,255,.55),rgba(180,80,255,.3))}
.tint-linear{--tint:linear-gradient(150deg,rgba(60,220,190,.55),rgba(50,140,255,.3))}
.tint-washer{--tint:linear-gradient(150deg,rgba(255,180,60,.55),rgba(255,110,40,.3))}
.tint-flood{--tint:linear-gradient(150deg,rgba(120,140,255,.55),rgba(60,200,255,.3))}

/* ---------- CARDS ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:.28s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);border-color:rgba(255,176,32,.42);box-shadow:0 18px 42px rgba(0,0,0,.5)}
.card .media{aspect-ratio:16/10}
.card-b{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}
.card-b h3{font-size:15.5px;font-weight:700;line-height:1.35;margin-bottom:7px;letter-spacing:-.2px}
.card-b h3 a:hover{color:var(--accent)}
.card-meta{font-size:12.5px;color:var(--muted);margin-bottom:12px;display:flex;gap:9px;align-items:center;flex-wrap:wrap}
.card-meta .s{width:3px;height:3px;border-radius:50%;background:var(--dim)}
.card-f{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;
  align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--dim)}
.card-f .strong{color:#A9B6C4;font-weight:600}

/* ---------- CHIPS ---------- */
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:30px}
.chip{padding:8px 16px;border-radius:999px;font-size:13px;font-weight:600;border:1px solid var(--line);
  color:#9FB0C0;transition:.2s;background:rgba(255,255,255,.02)}
.chip:hover{border-color:var(--line2);color:#fff}
.chip.on{background:var(--accent);border-color:var(--accent);color:#1a1200}
.chip .n{opacity:.65;margin-left:5px;font-size:11.5px}

/* ---------- PRODUCT DETAIL ---------- */
.pd{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:start;margin-top:8px}
.pd-media{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.pd-media .media{aspect-ratio:1/1}
.pd-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:12px}
.pd-thumbs .media{aspect-ratio:1/1;border-radius:10px;border:1px solid var(--line);cursor:pointer}
.pd h1{font-size:clamp(24px,3vw,38px);margin-bottom:14px}
.pd .tagline{color:var(--accent);font-size:13px;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;margin-bottom:12px}
.pd p.desc{color:#A3B1C0;margin-bottom:22px}
.spec-tbl{width:100%;border-collapse:collapse;font-size:13.6px;border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:26px}
.spec-tbl th{background:rgba(255,255,255,.04);text-align:left;padding:11px 16px;font-size:11.5px;
  letter-spacing:.9px;text-transform:uppercase;color:var(--muted);font-weight:700}
.spec-tbl td{padding:12px 16px;border-top:1px solid var(--line);color:#C5D1DD}
.spec-tbl td:first-child{color:var(--muted);width:42%}
.spec-tbl tr:hover td{background:rgba(255,176,32,.04)}
.spec-tbl a{color:var(--accent);font-weight:600}
.kv{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13.6px}
.kv:last-child{border:none}
.kv .k{color:var(--muted)}
.kv .v{font-weight:600;text-align:right}

/* ---------- SIDE / STICKY ---------- */
.side{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;position:sticky;top:94px}
.side h4{font-size:11.5px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.side .btns{display:flex;flex-direction:column;gap:10px;margin-top:20px}

/* ---------- PROSE ---------- */
.prose{max-width:820px}
.prose h2{font-size:22px;font-weight:800;letter-spacing:-.5px;margin:38px 0 14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.prose h3{font-size:17px;font-weight:700;margin:26px 0 10px}
.prose p{color:#A3B1C0;margin-bottom:14px}
.prose ul,.prose ol{color:#A3B1C0;margin:0 0 16px 22px}
.prose li{margin-bottom:8px}
.prose strong{color:#E9EEF4}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.prose img{border-radius:12px;margin:20px 0}

/* ---------- FEATURE LIST ---------- */
.feats{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}
.feat{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px}
.feat .ic{width:38px;height:38px;border-radius:11px;background:rgba(255,176,32,.12);border:1px solid rgba(255,176,32,.28);
  display:grid;place-items:center;font-size:17px;margin-bottom:14px}
.feat h4{font-size:15px;font-weight:700;margin-bottom:7px}
.feat p{color:var(--muted);font-size:13.6px}

/* ---------- CERT WALL ---------- */
.cert-wall{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:16px}
.cert{background:#fff;border-radius:12px;overflow:hidden;border:1px solid var(--line);transition:.25s;cursor:zoom-in}
.cert:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(0,0,0,.45)}
.cert .im{aspect-ratio:4/3;overflow:hidden;background:#fff;display:grid;place-items:center}
.cert .im img{width:100%;height:100%;object-fit:contain;background:#fff}
.cert .cap{background:var(--surface);padding:11px 13px;font-size:11.8px;color:#9FB0C0;line-height:1.4;min-height:52px}

/* ---------- PARTNERS ---------- */
.partners{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:16px}
.partner{background:#fff;border-radius:12px;border:1px solid var(--line);aspect-ratio:2/1;
  display:grid;place-items:center;padding:16px;transition:.25s}
.partner:hover{transform:translateY(-3px)}
.partner img{max-height:52px;width:auto;object-fit:contain;filter:none;mix-blend-mode:normal}

/* ---------- PLAY ---------- */
.playbtn{position:absolute;z-index:4;left:50%;top:50%;transform:translate(-50%,-50%);width:60px;height:60px;
  border-radius:50%;background:rgba(255,255,255,.14);border:1.5px solid rgba(255,255,255,.5);
  backdrop-filter:blur(6px);display:grid;place-items:center;transition:.25s}
.playbtn::after{content:'';width:0;height:0;border-left:15px solid #fff;border-top:9px solid transparent;border-bottom:9px solid transparent;margin-left:4px}
.media:hover .playbtn{background:var(--accent);border-color:var(--accent);transform:translate(-50%,-50%) scale(1.08)}
.media:hover .playbtn::after{border-left-color:#1a1200}
.badge-dur{position:absolute;z-index:5;right:12px;bottom:12px;padding:3px 9px;border-radius:6px;
  background:rgba(0,0,0,.72);font-size:11.5px;font-weight:700;letter-spacing:.4px;font-variant-numeric:tabular-nums}
.badge-cat{position:absolute;z-index:5;left:12px;top:12px;padding:4px 11px;border-radius:999px;
  background:rgba(0,0,0,.62);border:1px solid rgba(255,255,255,.18);font-size:10.5px;font-weight:700;
  letter-spacing:.5px;text-transform:uppercase;color:#E4ECF4;backdrop-filter:blur(4px)}

/* ---------- CTA ---------- */
.cta{border-radius:22px;padding:54px 46px;position:relative;overflow:hidden;text-align:center;
  background:linear-gradient(120deg,#1A1206,#241703 45%,#0E141C);border:1px solid rgba(255,176,32,.25)}
.cta::before{content:'';position:absolute;top:-130px;left:50%;transform:translateX(-50%);width:520px;height:340px;
  background:radial-gradient(ellipse,rgba(255,176,32,.28),transparent 70%)}
.cta-in{position:relative;z-index:2}
.cta h2{font-size:clamp(23px,3vw,34px);font-weight:800;letter-spacing:-1px;margin-bottom:12px}
.cta p{color:#A9B6C4;max-width:580px;margin:0 auto 26px}
.cta form{display:flex;gap:10px;max-width:600px;margin:0 auto;flex-wrap:wrap}
.cta input{flex:1;min-width:210px;padding:14px 20px;border-radius:999px;background:rgba(255,255,255,.06);
  border:1px solid var(--line2);outline:none}
.cta input::placeholder{color:var(--dim)}
.cta input:focus{border-color:var(--accent)}

/* ---------- FAQ ---------- */
.faq{border:1px solid var(--line);border-radius:12px;background:var(--surface);margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:17px 22px;font-weight:650;font-size:15px;list-style:none;
  display:flex;align-items:center;gap:12px;transition:.2s}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:'+';color:var(--accent);font-size:19px;font-weight:700;line-height:1;flex-shrink:0}
.faq[open] summary::before{content:'−'}
.faq summary:hover{background:rgba(255,255,255,.03)}
.faq .ans{padding:0 22px 20px 52px;color:var(--muted);font-size:14px}

/* ---------- FORMS ---------- */
.form{display:grid;gap:16px;max-width:640px}
.form label{display:block;font-size:12.5px;font-weight:650;letter-spacing:.6px;text-transform:uppercase;color:var(--muted);margin-bottom:7px}
.form input,.form textarea,.form select{width:100%;padding:13px 16px;border-radius:11px;background:rgba(255,255,255,.045);
  border:1px solid var(--line);outline:none;transition:.2s}
.form input:focus,.form textarea:focus,.form select:focus{border-color:var(--accent);background:rgba(255,255,255,.07)}
.form textarea{min-height:130px;resize:vertical}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}

/* ---------- TABLE OF CONTENTS / LIST ---------- */
.linklist{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.linklist a{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;
  background:var(--surface);border:1px solid var(--line);border-radius:12px;transition:.22s;font-size:14px;font-weight:600}
.linklist a:hover{border-color:rgba(255,176,32,.45);color:var(--accent);transform:translateX(3px)}
.linklist .arrow{color:var(--dim)}

/* ---------- FOOTER ---------- */
footer{border-top:1px solid var(--line);margin-top:80px;padding:56px 0 34px;background:var(--bg2)}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;margin-bottom:38px}
.foot-grid h4{font-size:12px;font-weight:800;letter-spacing:1.3px;text-transform:uppercase;color:#fff;margin-bottom:16px}
.foot-grid ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.foot-grid a{color:var(--muted);font-size:13.5px;transition:.2s}
.foot-grid a:hover{color:var(--accent)}
.foot-about{color:var(--muted);font-size:13.5px;max-width:340px;margin-top:16px}
.foot-bot{border-top:1px solid var(--line);padding-top:22px;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;color:var(--dim);font-size:12.5px}

/* ---------- NOTE / CALLOUT ---------- */
.note{border-left:3px solid var(--accent);background:rgba(255,176,32,.06);padding:16px 20px;
  border-radius:0 12px 12px 0;color:#C0CCD8;font-size:14px;margin:22px 0}
.note.info{border-color:var(--accent2);background:rgba(46,155,255,.07)}

/* ---------- MISC ---------- */
.pill{display:inline-block;padding:5px 13px;border-radius:999px;font-size:11.5px;font-weight:700;
  background:rgba(255,255,255,.06);border:1px solid var(--line);color:#A9B6C4;margin:0 6px 6px 0}
.pill:hover{border-color:var(--accent);color:var(--accent)}
.empty{text-align:center;padding:70px 0;color:var(--muted)}
.center{text-align:center}
.mt24{margin-top:24px}.mt40{margin-top:40px}.mb0{margin-bottom:0}

/* ---------- MOBILE NAV ---------- */
.nav-links.open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;
  background:var(--surface);border:1px solid var(--line);border-top:none;padding:14px 20px;gap:2px;
  max-height:72vh;overflow:auto;z-index:99}
.nav-links.open .drop{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;
  background:transparent;border:none;margin:2px 0 2px 12px;padding:0;min-width:0}
@media(max-width:1080px){.burger{display:block}}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#222E3C;border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:#2E3D4F}

@media(max-width:1080px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .pd{grid-template-columns:1fr;gap:32px}
  .side{position:static}
  .nav-links{display:none}
  .contact-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .wrap{padding:0 18px}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .sec{padding:48px 0}
  .hero-in{padding:58px 0 48px}
  .stats{display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .stat{padding:0;margin:0;border:none}
  .foot-grid{grid-template-columns:1fr}
  .cta{padding:36px 20px}
  .crumb{padding-top:14px}
}