:root{
    --red:#D22B2B; --red-dark:#B02020; --blue:#3D6EA5;
    --ink:#161A20; --body:#48515C; --muted:#7A8492;
    --bg:#FFFFFF; --panel:#F4F6F9; --line:#E3E8EF;
    --dark:#0C0F13; --dark2:#14181E; --dark-text:#C9D2DD;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--body);background:var(--bg);line-height:1.65;font-size:16px}
  h1,h2,h3,h4{color:var(--ink);line-height:1.2;font-weight:800}
  img{display:block;max-width:100%}
  a{color:var(--blue);text-decoration:none}
  .wrap{max-width:1120px;margin:0 auto;padding:0 24px}
  .kicker{display:block;font-size:12px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--red);margin-bottom:10px}
  section{padding:84px 0}
  .sec-head{max-width:720px;margin-bottom:44px}
  .sec-head h2{font-size:clamp(26px,3.4vw,38px)}
  .sec-head p{margin-top:12px;color:var(--muted)}

  /* nav */
  header{position:sticky;top:0;z-index:50;background:rgba(12,15,19,.94);backdrop-filter:blur(8px);border-bottom:1px solid #232a33}
  .nav{display:flex;align-items:center;gap:28px;height:64px}
  .brand{display:flex;align-items:center;gap:12px;margin-right:auto}
  .brand img{height:36px;width:auto;background:#fff;padding:4px 5px;border-radius:6px}
  .brand span{color:#fff;font-weight:800;font-size:15px;letter-spacing:.04em}
  .nav a.link{color:#B9C2CE;font-size:14px;font-weight:600}
  .nav a.link:hover{color:#fff}
  .nav .cta{background:var(--red);color:#fff;font-weight:700;font-size:14px;padding:9px 18px;border-radius:6px}
  .nav .cta:hover{background:var(--red-dark)}
  .burger{display:none;background:none;border:0;color:#fff;font-size:26px;cursor:pointer}

  /* hero */
  .hero{position:relative;background:var(--dark);color:#fff;padding:110px 0 96px;overflow:hidden}
  .hero::before{content:"";position:absolute;inset:0;background:url("assets/img/hero-marina-bay-services-tunnel.webp") center/cover;filter:blur(3px) brightness(.38);transform:scale(1.06)}
  .hero .wrap{position:relative}
  .hero .kicker{color:#FF6B6B}
  .hero h1{color:#fff;font-size:clamp(34px,5.4vw,58px);max-width:820px}
  .hero p.lead{margin-top:20px;font-size:clamp(16px,2vw,19px);color:#C9D2DD;max-width:640px}
  .hero .actions{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
  .btn{display:inline-block;padding:13px 26px;border-radius:6px;font-weight:700;font-size:15px}
  .btn-red{background:var(--red);color:#fff}
  .btn-red:hover{background:var(--red-dark)}
  .btn-ghost{border:1px solid #55606d;color:#fff}
  .btn-ghost:hover{border-color:#fff}
  .hero .strip{margin-top:64px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#2a323c;border:1px solid #2a323c;border-radius:10px;overflow:hidden}
  .hero .strip div{background:rgba(20,24,30,.92);padding:18px 20px}
  .hero .strip b{display:block;font-size:26px;color:#fff}
  .hero .strip span{font-size:12.5px;color:#93A0AF}

  /* about */
  .about-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:56px;align-items:start}
  .about-grid p+p{margin-top:16px}
  .stat-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .stat{background:var(--panel);border-radius:10px;padding:22px 20px}
  .stat b{display:block;font-size:30px;color:var(--red)}
  .stat span{font-size:13px;color:var(--muted)}
  .about-photo{margin-top:16px;border-radius:10px;overflow:hidden;grid-column:1/-1}
  .about-photo img{width:100%;height:220px;object-fit:cover}

  /* services */
  .services{background:var(--panel)}
  .svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
  .svc{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px 22px}
  .svc em{font-style:normal;font-weight:800;color:var(--red);font-size:14px}
  .svc h3{font-size:16.5px;margin:8px 0 8px}
  .svc p{font-size:13.5px;color:var(--muted)}

  /* track record */
  .tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}
  .tabs button{border:1px solid var(--line);background:#fff;color:var(--body);font-weight:700;font-size:13.5px;padding:9px 16px;border-radius:999px;cursor:pointer}
  .tabs button.active{background:var(--ink);border-color:var(--ink);color:#fff}
  .tr-panel{display:none;grid-template-columns:1fr 300px;gap:32px;align-items:start}
  .tr-panel.active{display:grid}
  .tr-list{display:flex;flex-direction:column}
  .tr-item{padding:18px 0;border-bottom:1px solid var(--line)}
  .tr-item:first-child{padding-top:0}
  .tr-item h4{font-size:15.5px;margin-bottom:4px}
  .tr-item p{font-size:14px;color:var(--muted)}
  .tr-side figure{border-radius:10px;overflow:hidden}
  .tr-side img{width:100%;height:210px;object-fit:cover}
  .tr-side figcaption{padding:0 2px}
  /* subtle softening on all project photos */

  .tr-side figcaption{font-size:12.5px;color:var(--muted);margin-top:8px}
  .tr-side .fact{margin-top:20px;background:var(--panel);border-radius:10px;padding:18px}
  .tr-side .fact b{display:block;font-size:24px;color:var(--red)}
  .tr-side .fact span{font-size:13px;color:var(--body)}

  /* gallery */
  .gallery{background:var(--dark);color:#fff}
  .gallery .sec-head h2{color:#fff}
  .gallery .sec-head p{color:#93A0AF}
  .gal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  .gal-grid figure{border-radius:10px;overflow:hidden;background:var(--dark2)}
  .gal-grid img{width:100%;height:200px;object-fit:cover}
  .gal-grid figcaption{padding:12px 14px;font-size:13px;color:#AEB9C6}

  /* recent */
  .recent-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
  .recent{background:var(--panel);border-radius:10px;overflow:hidden}
  .recent img{width:100%;height:190px;object-fit:cover}
  .recent .pad{padding:20px}
  .recent h3{font-size:16px;margin-bottom:6px}
  .recent p{font-size:13.5px;color:var(--muted)}
  .badge{display:inline-block;background:var(--red);color:#fff;font-size:11px;font-weight:800;letter-spacing:.08em;padding:3px 9px;border-radius:999px;margin-bottom:10px}

  /* certs */
  .cert-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .cert{background:var(--panel);border-radius:10px;padding:24px}
  .cert h3{font-size:16px;margin-bottom:6px}
  .cert p{font-size:14px;color:var(--muted)}
  .equip{margin-top:44px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  .equip figure{border:1px solid var(--line);border-radius:10px;overflow:hidden}
  .equip img{width:100%;height:180px;object-fit:cover}
  .equip figcaption{padding:11px 14px;font-size:13px;color:var(--muted)}

  /* contact */
  .contact{background:var(--dark);color:#fff;padding:90px 0}
  .contact h2{color:#fff;font-size:clamp(26px,3.4vw,38px)}
  .contact .grid{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:start}
  .contact p{color:#AEB9C6}
  .c-card{background:var(--dark2);border:1px solid #232a33;border-radius:10px;padding:28px}
  .c-card dt{font-size:11.5px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:#7A8492;margin-top:18px}
  .c-card dt:first-child{margin-top:0}
  .c-card dd{color:#E8EDF3;font-size:15.5px;margin-top:3px}
  .c-card a{color:#fff;font-weight:600}
  footer{background:var(--dark);border-top:1px solid #232a33;padding:26px 0;font-size:13px;color:#7A8492}
  footer .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

  @media (max-width:900px){
    .svc-grid{grid-template-columns:1fr 1fr}
    .hero .strip{grid-template-columns:1fr 1fr}
    .about-grid,.contact .grid{grid-template-columns:1fr}
    .tr-panel{grid-template-columns:1fr}
    .gal-grid,.recent-grid,.equip{grid-template-columns:1fr 1fr}
    .nav .links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--dark);flex-direction:column;padding:12px 24px 20px;gap:14px;border-bottom:1px solid #232a33}
    .nav .links.open{display:flex}
    .burger{display:block}
  }
  @media (min-width:901px){ .nav .links{display:flex;align-items:center;gap:28px} }
  @media (max-width:560px){
    .svc-grid,.gal-grid,.recent-grid,.equip,.stat-cards{grid-template-columns:1fr}
    .hero{padding:80px 0 64px}
    section{padding:60px 0}
  }


/* ---- service pages (added 09/09/2026) ---- */
.crumb{font-size:13px;color:#8A94A0;padding:18px 0 0}
.crumb a{color:#8A94A0;text-decoration:none}
.crumb a:hover{color:#D22B2B}
.svc-hero{padding:48px 0 8px}
.svc-hero h1{max-width:18ch}
.prose{max-width:70ch}
.prose h2{margin-top:44px}
.prose h3{margin-top:28px;font-size:18px}
.prose p,.prose li{color:#48515C;line-height:1.75}
.prose ul{padding-left:20px}
.prose li{margin-bottom:8px}
.answer{background:#F4F6F9;border-left:3px solid #D22B2B;padding:18px 22px;margin:26px 0;border-radius:0 6px 6px 0}
.answer p{margin:0;color:#1F2933;font-size:17px;line-height:1.65}
.proof{background:#fff;border:1px solid #E3E8EE;border-radius:8px;padding:20px 22px;margin:14px 0}
.proof b{display:block;color:#1F2933;margin-bottom:6px;font-size:15px}
.proof p{margin:0;font-size:14.5px}
.sibs{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:20px}
.sibs a{display:block;padding:16px 18px;background:#fff;border:1px solid #E3E8EE;border-radius:8px;
  text-decoration:none;color:#1F2933;font-weight:600;font-size:15px}
.sibs a:hover{border-color:#D22B2B;color:#D22B2B}
.sibs a span{display:block;font-weight:400;font-size:13.5px;color:#8A94A0;margin-top:4px}
.callout{background:#1F2933;color:#fff;border-radius:10px;padding:30px 32px;margin:40px 0 10px}
.callout h2{color:#fff;margin:0 0 10px}
.callout p{color:#C7CED6;margin:0 0 20px;max-width:56ch}
.callout a.btn-red{margin-right:10px}
@media(max-width:600px){.svc-hero{padding:32px 0 4px}}

/* ---- enquiry form (added 09/09/2026) ---- */
.enq{background:#fff;border:1px solid #E3E8EE;border-radius:10px;padding:28px 30px;margin-top:26px}
.enq h3{margin:0 0 6px;font-size:20px;color:#1F2933}
.enq .sub{margin:0 0 22px;color:#8A94A0;font-size:14.5px}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.f{display:flex;flex-direction:column}
.f.full{grid-column:1/-1}
.f label{font-size:13.5px;font-weight:600;color:#48515C;margin-bottom:6px}
.f label .req{color:#D22B2B}
.f input,.f select,.f textarea{font:inherit;font-size:15px;padding:11px 13px;border:1px solid #D7DEE6;
  border-radius:6px;background:#FBFCFD;color:#1F2933;width:100%}
.f textarea{min-height:130px;resize:vertical}
.f input:focus,.f select:focus,.f textarea:focus{outline:2px solid #D22B2B;outline-offset:1px;border-color:transparent}
.enq .hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}
.enq .send{margin-top:20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.enq .note{font-size:13px;color:#8A94A0;margin:0}
@media(max-width:640px){.fgrid{grid-template-columns:1fr}.enq{padding:22px 20px}}