/* ===== CoreGrid Technical Services — stylesheet ===== */
:root{
  --orange:#F77D02; --orange-d:#d96a00; --slate:#405C72; --slate-d:#2C3F4F;
  --ink:#1B2830; --body:#41505A; --mist:#F4F7F9; --line:#E1E7EB; --muted:#6E7C86;
  --white:#fff;
  --wrap:1160px;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;
  --display:'Poppins',var(--sans);
  --shadow:0 10px 30px rgba(27,40,48,.08);
  --shadow-lg:0 18px 50px rgba(27,40,48,.14);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:var(--sans);color:var(--body);line-height:1.6;background:var(--white);-webkit-font-smoothing:antialiased}
.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* ---- buttons ---- */
.btn{display:inline-block;font-family:var(--sans);font-weight:600;font-size:15px;padding:13px 26px;border-radius:8px;
  cursor:pointer;border:2px solid transparent;transition:.2s ease;letter-spacing:.01em}
.btn-orange{background:var(--orange);color:#fff;border-color:var(--orange)}
.btn-orange:hover{background:var(--orange-d);border-color:var(--orange-d);transform:translateY(-2px);box-shadow:0 8px 20px rgba(247,125,2,.35)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-block{width:100%;text-align:center}

/* ---- shared type ---- */
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--slate);margin-bottom:14px}
.eyebrow.light{color:#F7A24A}
.h2{font-family:var(--display);font-size:clamp(26px,3.4vw,38px);font-weight:800;color:var(--ink);line-height:1.12;letter-spacing:-.01em}
.rule{width:54px;height:4px;background:var(--orange);border-radius:2px;margin:18px 0 26px}
.section{padding:88px 0}
.section.alt{background:var(--mist)}
.section-lead{font-size:18px;max-width:720px;margin-bottom:38px;color:#4a5760}
.muted-note{font-size:14px;color:var(--muted);font-style:italic;margin-top:22px}

/* ===== NAV ===== */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand-logo{height:46px;width:auto}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{font-weight:500;font-size:15px;color:var(--slate);transition:color .2s}
.nav-links a:hover{color:var(--orange)}
.nav-cta{color:#fff!important;padding:10px 20px}
.nav-cta:hover{color:#fff!important}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:26px;height:3px;background:var(--slate);border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* ===== HERO ===== */
.hero{position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(150deg,#46637C 0%,#33495B 55%,#243440 100%)}
.hero-grid{position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1.4px,transparent 1.5px);
  background-size:26px 26px;opacity:.9}
.hero-inner{position:relative;padding:96px 24px 104px;max-width:var(--wrap)}
.hero-title{font-family:var(--display);font-weight:800;font-size:clamp(32px,5.4vw,60px);line-height:1.05;
  letter-spacing:-.02em;color:#fff;margin-bottom:22px}
.hero-title .accent{color:#F7A24A}
.hero-sub{font-size:clamp(16px,1.6vw,19px);max-width:640px;color:#D3DEE6;margin-bottom:34px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:56px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;border-top:1px solid rgba(255,255,255,.16);padding-top:30px;max-width:760px}
.hstat{flex:1;min-width:120px}
.hstat .n{display:block;font-family:var(--display);font-size:34px;font-weight:800;color:#fff;line-height:1}
.hstat .l{display:block;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:#93A7B5;margin-top:8px}

/* ===== ABOUT ===== */
.about-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}
.about-text p{margin-bottom:16px;font-size:16.5px}
.values-row{list-style:none;display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.values-row li{font-size:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--slate);
  border:1px solid var(--line);border-radius:20px;padding:7px 15px}
.about-cards{display:flex;flex-direction:column;gap:18px}
.vm-card{border-radius:14px;padding:26px;color:#EAF1F5}
.vm-card.v{background:linear-gradient(160deg,#46637C,#33495B)}
.vm-card.m{background:linear-gradient(160deg,#405C72,#2C3F4F)}
.vm-card .k{font-size:12.5px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:#F7A24A}
.vm-card h3{font-family:var(--display);font-size:19px;color:#fff;margin:10px 0 10px;line-height:1.25}
.vm-card p{font-size:14.5px;color:#DCE6EC}

/* ===== SERVICES ===== */
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scard{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px 26px;transition:.25s ease;
  box-shadow:var(--shadow)}
.scard:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:#cfd8de}
.scard-ic{width:56px;height:56px;border-radius:13px;background:var(--slate);display:flex;align-items:center;
  justify-content:center;margin-bottom:20px}
.scard-ic svg{width:30px;height:30px}
.scard-ic .l{fill:#fff}.scard-ic .o{fill:var(--orange)}
.scard h3{font-family:var(--display);font-size:19px;color:var(--ink);margin-bottom:10px;line-height:1.25}
.scard>p{font-size:15px;color:#55636c;margin-bottom:16px}
.scard ul{list-style:none}
.scard ul li{position:relative;padding-left:18px;font-size:14px;color:#55636c;margin-bottom:8px}
.scard ul li::before{content:"";position:absolute;left:0;top:7px;border-style:solid;border-width:4px 0 4px 6px;
  border-color:transparent transparent transparent var(--orange)}
.cta-card{background:linear-gradient(160deg,#405C72,#2C3F4F);border:none;color:#fff;display:flex;flex-direction:column}
.cta-card h3{color:#fff}
.cta-card>p{color:#D3DEE6;flex:1}
.cta-card .btn{margin-top:8px;align-self:flex-start}

/* ===== WHY ===== */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.why{background:#fff;border:1px solid var(--line);border-left:3px solid var(--orange);border-radius:10px;padding:24px}
.why h4{font-family:var(--display);font-size:17px;color:var(--ink);margin-bottom:8px}
.why p{font-size:14.5px;color:#55636c}

/* ===== PROJECTS ===== */
.proj-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.pcard-media{height:210px;position:relative;
  background:radial-gradient(circle at 16px 16px,rgba(64,92,114,.06) 1.4px,transparent 1.6px) 0 0/22px 22px,
    linear-gradient(160deg,#eef2f5,#e2e9ee);border-bottom:3px solid var(--orange)}
.pcard-media::after{content:attr(data-label);position:absolute;inset:0;display:flex;align-items:center;
  justify-content:center;font-size:13px;color:#96a2ab;font-style:italic;letter-spacing:.02em}
.pcard-body{padding:24px 26px}
.pcard-body .tag{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--orange)}
.pcard-body h3{font-family:var(--display);font-size:22px;color:var(--ink);margin:8px 0 8px}
.pcard-body p{font-size:15px;color:#55636c}

/* ===== HSE ===== */
.cert-row{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:6px}
.cert{background:#fff;border:1px solid var(--line);border-top:3px solid var(--slate);border-radius:12px;
  padding:30px 20px;text-align:center}
.cert .code{display:block;font-family:var(--display);font-size:26px;font-weight:800;color:var(--slate)}
.cert .desc{display:block;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-top:10px}

/* ===== CONTACT ===== */
.contact-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:start}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px;box-shadow:var(--shadow)}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.f-field{margin-bottom:16px;display:flex;flex-direction:column}
.f-field label{font-size:13px;font-weight:600;color:var(--slate);margin-bottom:6px}
.f-field input,.f-field select,.f-field textarea{font-family:var(--sans);font-size:15px;color:var(--ink);
  border:1px solid var(--line);border-radius:8px;padding:12px 14px;background:#fbfcfd;transition:.2s;width:100%}
.f-field input:focus,.f-field select:focus,.f-field textarea:focus{outline:none;border-color:var(--orange);
  background:#fff;box-shadow:0 0 0 3px rgba(247,125,2,.12)}
.f-field textarea{resize:vertical}
.form-note{font-size:13px;color:var(--muted);margin-top:14px;text-align:center}
.form-note a{color:var(--orange);font-weight:600}
.contact-info{display:flex;flex-direction:column;gap:20px}
.cinfo{border-left:3px solid var(--orange);padding-left:16px}
.ci-l{display:block;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:5px}
.ci-v{display:block;font-size:16px;font-weight:600;color:var(--ink);line-height:1.5}
.ci-v a{color:var(--slate)}.ci-v a:hover{color:var(--orange)}
.map{border-radius:12px;overflow:hidden;border:1px solid var(--line);margin-top:4px}
.map iframe{width:100%;height:220px;border:0;display:block;filter:grayscale(.2)}

/* ===== FOOTER ===== */
.footer{position:relative;background:linear-gradient(160deg,#33495B,#243440);color:#C4D0D9;overflow:hidden}
.footer-grid-bg{position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.05) 1.4px,transparent 1.5px);
  background-size:26px 26px}
.footer-inner{position:relative;display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding:56px 24px 40px}
.footer-brand img{height:64px;width:auto;margin-bottom:16px}
.footer-brand p{font-size:14px;color:#9DB0BC;max-width:260px}
.footer-col h5{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:#fff;margin-bottom:16px}
.footer-col a,.footer-col span{display:block;font-size:14px;color:#AFBEC8;margin-bottom:10px;line-height:1.5}
.footer-col a:hover{color:var(--orange)}
.footer-bar{position:relative;border-top:1px solid rgba(255,255,255,.1)}
.footer-bar-inner{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:18px 24px;
  font-size:12.5px;color:#8FA1AD;flex-wrap:wrap}
.footer-bar .sectors{letter-spacing:.04em}

/* ===== BACK TO TOP ===== */
.to-top{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;background:var(--orange);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transition:.3s;z-index:55}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--orange-d);transform:translateY(-3px)}

/* ===== RESPONSIVE ===== */
@media(max-width:960px){
  .about-wrap{grid-template-columns:1fr;gap:32px}
  .cards-grid,.why-grid,.cert-row{grid-template-columns:1fr 1fr}
  .contact-wrap{grid-template-columns:1fr;gap:32px}
  .footer-inner{grid-template-columns:1fr 1fr;gap:30px}
}
@media(max-width:720px){
  .nav-toggle{display:flex}
  .nav-links{position:fixed;top:72px;right:0;width:min(80vw,300px);height:calc(100vh - 72px);
    background:#fff;flex-direction:column;align-items:flex-start;gap:0;padding:16px 24px;
    box-shadow:-10px 0 40px rgba(0,0,0,.12);transform:translateX(105%);transition:transform .3s ease}
  .nav-links.open{transform:translateX(0)}
  .nav-links a{width:100%;padding:14px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav-cta{margin-top:14px;border:none;text-align:center;border-bottom:none!important}
  .section{padding:60px 0}
  .cards-grid,.why-grid,.cert-row,.proj-grid,.f-row{grid-template-columns:1fr}
  .hero-inner{padding:70px 24px 76px}
  .hero-stats{gap:22px}
  .hstat{min-width:100px}
  .footer-inner{grid-template-columns:1fr;gap:26px}
  .footer-bar-inner{flex-direction:column;align-items:flex-start}
}