:root{
  --green:#0b8f43;
  --green-dark:#066b34;
  --green-soft:#eaf6ef;
  --ink:#10221a;
  --muted:#607068;
  --line:#dfe8e2;
  --white:#fff;
  --dark:#071a12;
  --max:1180px;
  --shadow:0 18px 50px rgba(9,43,27,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.6}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:min(var(--max),calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(223,232,226,.85)}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between}
.brand img{width:118px;height:auto}
.nav{display:flex;align-items:center;gap:26px;font-size:14px;font-weight:650}
.nav a{transition:.2s ease}
.nav a:hover{color:var(--green)}
.nav-cta{padding:10px 17px;border-radius:999px;background:var(--green);color:#fff!important}
.menu-toggle{display:none;border:0;background:none;font-size:25px;color:var(--ink)}
.hero{position:relative;min-height:calc(100vh - 78px);display:flex;align-items:center;overflow:hidden;background:var(--dark);color:#fff}
.hero-bg{position:absolute;inset:0;background:url("assets/hydropower.png") center/cover no-repeat;transform:scale(1.02)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(3,22,13,.88) 0%,rgba(3,22,13,.62) 48%,rgba(3,22,13,.18) 100%)}
.hero-content{position:relative;padding:90px 0;max-width:850px}
.eyebrow{letter-spacing:.15em;font-size:12px;font-weight:800;opacity:.8;margin:0 0 14px}
.eyebrow.green{color:var(--green);opacity:1}
h1{font-size:clamp(46px,7vw,82px);line-height:1.02;letter-spacing:-.045em;margin:0 0 24px}
h1 span{color:#a9e5bf}
.hero-content>p{font-size:19px;max-width:690px;color:#e8f0eb;margin:0 0 32px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 19px;border-radius:999px;font-weight:750;font-size:14px;transition:transform .2s,background .2s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-dark)}
.btn-ghost{border:1px solid rgba(255,255,255,.35);color:#fff;background:rgba(255,255,255,.06)}
.hero-stat{position:absolute;right:5%;bottom:38px;display:flex;flex-direction:column;text-align:right}
.hero-stat strong{font-size:16px}.hero-stat span{font-size:12px;color:#c4d2ca}
.section{padding:110px 0}
.intro{background:#fbfdfb}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start}
h2{font-size:clamp(34px,4vw,55px);line-height:1.08;letter-spacing:-.035em;margin:0}
.lead{font-size:18px;color:var(--muted);max-width:580px}
.lead p:first-child{margin-top:0}
.mission{background:var(--green-soft)}
.mission-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:70px;align-items:center}
.mission-image img{height:590px;width:100%;object-fit:cover;border-radius:28px;box-shadow:var(--shadow)}
.mission-copy>p:not(.eyebrow){color:#52645b;font-size:17px}
.focus-card{margin-top:30px;padding:25px;border-radius:18px;background:#fff;border:1px solid #d8e9dd;box-shadow:0 12px 30px rgba(11,143,67,.07)}
.focus-card span{display:block;font-size:11px;letter-spacing:.12em;font-weight:850;color:var(--green);margin-bottom:8px}
.focus-card strong{display:block;font-size:20px;line-height:1.3}
.focus-card p{color:var(--muted);margin-bottom:0}
.section-head{display:flex;justify-content:space-between;gap:50px;align-items:end;margin-bottom:45px}
.section-head>p{max-width:430px;color:var(--muted);margin:0}
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
.service-card{padding:25px;min-height:220px;border:1px solid var(--line);border-radius:18px;background:#fff;transition:.25s ease}
.service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#b9dbc6}
.service-card span{font-size:12px;color:var(--green);font-weight:850}
.service-card h3{font-size:20px;line-height:1.25;margin:38px 0 10px}
.service-card p{font-size:14px;color:var(--muted);margin:0}
.technology{background:var(--dark);color:#fff;padding:110px 0}
.light .eyebrow{color:#a9e5bf}
.technology .section-head h2{max-width:850px}
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.tech-card{position:relative;min-height:320px;border-radius:20px;overflow:hidden;background:#0d281c}
.tech-card.large{grid-column:span 2}
.tech-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;opacity:.58;transition:transform .5s}
.tech-card:hover img{transform:scale(1.05)}
.tech-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 15%,rgba(0,0,0,.85) 100%)}
.tech-card>div{position:absolute;z-index:2;left:24px;right:24px;bottom:23px}
.tech-card span{font-size:11px;letter-spacing:.12em;color:#a9e5bf;font-weight:850}
.tech-card h3{font-size:24px;line-height:1.12;margin:6px 0}
.tech-card p{margin:0;color:#d2ddd7;font-size:14px}
.projects{background:#f7faf8}
.project-list{border-top:1px solid var(--line)}
.project{display:grid;grid-template-columns:70px 1fr;gap:25px;padding:23px 0;border-bottom:1px solid var(--line);align-items:start}
.project span{font-size:12px;color:var(--green);font-weight:850;padding-top:4px}
.project p{margin:0;font-size:17px;font-weight:620}
.contact{background:linear-gradient(135deg,#07351f,#0b8f43);color:#fff;padding:105px 0}
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:80px;align-items:start}
.contact h2{max-width:650px;margin-bottom:24px}
.contact> .container>div>p:not(.eyebrow){color:#d8e8df;max-width:640px;font-size:17px}
.contact .btn{margin-top:12px}
.contact-card{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);border-radius:22px;padding:28px}
.contact-card>div+div{border-top:1px solid rgba(255,255,255,.16);margin-top:20px;padding-top:20px}
.contact-card span{font-size:10px;letter-spacing:.15em;font-weight:850;color:#a9e5bf}
.contact-card p{margin:7px 0 0;color:#f0f6f2}
.contact-card a{text-decoration:underline;text-underline-offset:3px}
footer{background:#04120c;color:#b8c7bf;padding:24px 0}
.footer-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:12px}
.footer-wrap img{width:90px}
.footer-wrap p{margin:0}
.footer-wrap>a{color:#d9e8df}
@media (max-width:980px){
  .nav{gap:15px}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .tech-grid{grid-template-columns:repeat(2,1fr)}
  .tech-card.large{grid-column:span 2}
}
@media (max-width:760px){
  .container{width:min(var(--max),calc(100% - 28px))}
  .nav-wrap{height:68px}
  .menu-toggle{display:block}
  .nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:16px 20px 22px;flex-direction:column;align-items:stretch;gap:0}
  .nav.open{display:flex}
  .nav a{padding:12px 0}
  .nav-cta{text-align:center;margin-top:6px}
  .hero{min-height:760px}
  .hero-content{padding:70px 0}
  h1{font-size:47px}
  .hero-content>p{font-size:17px}
  .hero-stat{display:none}
  .section,.technology,.contact{padding:78px 0}
  .two-col,.mission-grid,.contact-grid{grid-template-columns:1fr;gap:38px}
  .mission-image img{height:380px}
  .section-head{display:block}
  .section-head>p{margin-top:18px}
  .service-grid,.tech-grid{grid-template-columns:1fr}
  .tech-card.large{grid-column:auto}
  .tech-card{min-height:290px}
  .project{grid-template-columns:42px 1fr;gap:12px}
  .project p{font-size:15px}
  .footer-wrap{flex-direction:column;align-items:flex-start}
}