:root{
  --ink:#10262b; --ink2:#1a3a41; --paper:#f7f8f7; --tint:#e4eae9; --line:#c9d3d2;
  --text:#22343a; --muted:#566a70; --accent:#e3a82b; --accent-d:#b9831a;
  --head:"Archivo","Arial Narrow",Arial,sans-serif; --body:"Public Sans",system-ui,Arial,sans-serif;
  --w:1280px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font:400 17px/1.7 var(--body);color:var(--text);background:var(--paper);-webkit-font-smoothing:antialiased}
a{color:inherit}
h1,h2,h3{font-family:var(--head);line-height:1.1;color:var(--ink);letter-spacing:-.01em}
.wrap{width:min(var(--w),100% - 48px);margin-inline:auto}
.skip{position:absolute;left:-999px;top:8px;background:var(--accent);color:var(--ink);padding:8px 14px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:var(--ink);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 2px 18px rgba(0,0,0,.25)}
.bar{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;font:800 22px var(--head);letter-spacing:.12em;color:#fff;text-decoration:none}
.logo-mark{width:18px;height:22px;border:3px solid var(--accent);border-top-width:8px;display:inline-block}
.nav{display:flex;align-items:center;gap:32px}
.nav a{color:#d6e0df;text-decoration:none;font-size:15px;font-weight:500;transition:color .2s}
.nav a:hover{color:var(--accent)}
.menu-btn{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;position:relative}
.menu-btn span{position:absolute;left:10px;right:10px;height:2px;background:#fff;transition:.25s}
.menu-btn span:first-child{top:17px}.menu-btn span:last-child{top:25px}
.menu-btn[aria-expanded=true] span:first-child{top:21px;transform:rotate(45deg)}
.menu-btn[aria-expanded=true] span:last-child{top:21px;transform:rotate(-45deg)}

/* buttons */
.btn{display:inline-block;background:var(--accent);color:var(--ink)!important;font:700 16px var(--head);padding:15px 28px;text-decoration:none;border:2px solid var(--accent);border-radius:2px;cursor:pointer;transition:background .2s,transform .2s}
.btn:hover{background:var(--accent-d);border-color:var(--accent-d);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-ghost{background:transparent;color:#fff!important;border-color:#5d7a80}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:#fff}

/* hero */
.hero{background:var(--ink);color:#fff;padding:88px 0 96px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center}
.tag{color:var(--accent);font-weight:600;font-size:15px;margin-bottom:22px}
.hero h1{color:#fff;font-size:clamp(42px,6vw,82px);font-weight:800;margin-bottom:26px}
.lead{font-size:20px;color:#c3d1d0;max-width:58ch;margin-bottom:36px}
.actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:56px}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;border-top:1px solid #35545a;padding-top:26px}
.facts dt{font-size:14px;color:#8fa8a8}
.facts dd{font:700 20px var(--head);color:#fff;margin-top:2px}
.hero-art svg{width:100%;height:auto;display:block;border:1px solid #35545a}
.a-bg{fill:#14313a}.a-grid path{stroke:#24474f;stroke-width:1;fill:none}
.a-b1{fill:#d9e2e1}.a-b2{fill:#9fb7b8}.a-win rect{fill:#14313a}
.a-door{fill:var(--accent)}.a-ground{stroke:#fff;stroke-width:3}
.a-crane{stroke:var(--accent);stroke-width:4;fill:none;stroke-dasharray:700;stroke-dashoffset:700;animation:draw 2.2s .3s ease forwards}
.a-label{fill:#8fa8a8;font:500 13px var(--body)}
@keyframes draw{to{stroke-dashoffset:0}}

/* strip */
.strip{background:var(--accent);color:var(--ink)}
.strip-in{display:grid;grid-template-columns:repeat(4,1fr)}
.strip p{font:700 16px var(--head);padding:20px 16px;border-left:2px solid rgba(16,38,43,.25)}
.strip p:first-child{border-left:0;padding-left:0}

/* sections */
.section{padding:112px 0}
.section.tint{background:var(--tint)}
.section.dark{background:var(--ink2);color:#c3d1d0}
.section.dark h2,.section.dark h3{color:#fff}
.sec-head{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:end;margin-bottom:56px}
.sec-head h2{font-size:clamp(34px,4.4vw,56px)}
.sec-head p{font-size:19px;max-width:48ch}
h2{font-size:clamp(32px,4vw,50px);font-weight:800}
h3{font-size:21px;font-weight:700}

/* about */
.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:80px}
.about-head h2{margin-bottom:40px}
.panel{background:var(--ink);color:#c3d1d0;padding:32px;border-left:6px solid var(--accent)}
.panel h3{color:#fff;margin-bottom:12px}.panel p{margin-bottom:12px}.panel a{color:var(--accent)}
.big{font:500 24px/1.5 var(--head);color:var(--ink);margin-bottom:28px}
.about-body>p{margin-bottom:20px;max-width:68ch}
.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);margin-top:40px;border-top:2px solid var(--ink)}
.mini-grid div{padding:22px 20px 0 0}
.mini-grid div+div{padding-left:20px;border-left:1px solid var(--line)}
.mini-grid h3{font-size:19px;margin-bottom:6px}
.mini-grid p{font-size:15px;line-height:1.55;color:var(--muted)}

/* services */
.svc-list{list-style:none;border-top:1px solid #35545a}
.svc{display:grid;grid-template-columns:72px 1fr 120px;gap:28px;align-items:start;padding:34px 12px;border-bottom:1px solid #35545a;transition:background .25s,padding-left .25s}
.svc:hover{background:#21474f;padding-left:24px}
.svc-n{font:800 34px var(--head);color:var(--accent)}
.svc h3{font-size:26px;margin-bottom:8px}
.svc p{max-width:70ch}
.svc-meta{font-size:14px;color:#8fa8a8;text-align:right;padding-top:8px}

/* steps */
.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);counter-reset:s;position:relative}
.steps li{counter-increment:s;padding:44px 28px 0 0;border-top:3px solid var(--ink);position:relative}
.steps li::before{content:counter(s);position:absolute;top:-20px;left:0;width:38px;height:38px;background:var(--accent);color:var(--ink);font:800 18px/38px var(--head);text-align:center}
.steps h3{margin-bottom:8px;font-size:20px}
.steps p{font-size:16px;color:var(--muted)}

/* why */
.why-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;align-items:start}
.why-head{position:sticky;top:110px}
.why-head h2{margin-bottom:16px}
.why-head>p{font-size:19px;color:var(--muted);margin-bottom:36px}
.block{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;max-width:300px}
.block span{aspect-ratio:1;background:var(--ink)}
.block span:nth-child(2){background:var(--accent)}
.block span:nth-child(3){background:#7d9a9c}
.why-list article{padding:28px 0 28px 28px;border-left:4px solid var(--line);margin-bottom:6px;transition:border-color .25s,background .25s}
.why-list article:hover{border-color:var(--accent);background:rgba(255,255,255,.55)}
.why-list h3{margin-bottom:6px}
.why-list p{max-width:60ch;color:var(--muted)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px}
.contact-info h2{margin-bottom:18px}
.contact-info>p{font-size:19px;color:var(--muted);margin-bottom:36px;max-width:46ch}
.details div{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:16px 0;border-top:1px solid var(--line)}
.details dt{font-weight:600;color:var(--ink)}
.details a{color:var(--ink2);font-weight:600}
.form{background:#fff;border:1px solid var(--line);border-top:6px solid var(--ink);padding:40px}
.field{margin-bottom:20px}
label{display:block;font-weight:600;font-size:15px;color:var(--ink);margin-bottom:6px}
input,select,textarea{width:100%;font:inherit;padding:13px 14px;border:1px solid #9fb0b0;background:var(--paper);border-radius:2px;color:var(--text)}
input:focus,select:focus,textarea:focus{outline:3px solid var(--accent);outline-offset:0;border-color:var(--ink)}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:#b3261e}
.err{display:block;color:#b3261e;font-size:14px;min-height:0;margin-top:4px}
.status{margin-top:16px;font-weight:600;color:var(--ink2)}

/* footer */
.footer{background:var(--ink);color:#aebfbe;padding:72px 0 0}
.foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:48px;padding-bottom:48px}
.footer h3{color:#fff;font-size:18px;margin-bottom:12px}
.footer .logo{margin-bottom:14px}
.footer a{text-decoration:none}.footer a:hover{color:var(--accent)}
.legal{border-top:1px solid #35545a;padding:22px 0;font-size:14px}

/* scroll reveal: only the section headings, one gentle motion */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:980px){
  .hero-grid,.about-grid,.why-grid,.contact-grid,.sec-head{grid-template-columns:1fr;gap:40px}
  .hero-art{max-width:460px}
  .why-head{position:static}
  .steps{grid-template-columns:1fr 1fr;row-gap:48px}
  .strip-in{grid-template-columns:1fr 1fr}
  .strip p:nth-child(3){border-left:0;padding-left:0}
  .foot-grid{grid-template-columns:1fr 1fr}
  .section{padding:84px 0}
}
@media (max-width:760px){
  .menu-btn{display:block}
  .nav{position:absolute;top:72px;left:0;right:0;background:var(--ink);flex-direction:column;align-items:flex-start;gap:0;padding:8px 24px 24px;border-top:1px solid #35545a;display:none}
  .nav.open{display:flex}
  .nav a{padding:14px 0;width:100%;font-size:18px}
  .nav .btn{width:auto;margin-top:8px}
}
@media (max-width:620px){
  body{font-size:16px}
  .hero{padding:56px 0 64px}
  .facts{grid-template-columns:1fr}
  .mini-grid{grid-template-columns:1fr}
  .mini-grid div+div{border-left:0;border-top:1px solid var(--line);padding-left:0;margin-top:20px}
  .svc{grid-template-columns:44px 1fr;gap:14px;padding:26px 4px}
  .svc-meta{grid-column:2;text-align:left;padding:0}
  .svc h3{font-size:22px}
  .steps{grid-template-columns:1fr}
  .form{padding:26px 20px}
  .details div{grid-template-columns:1fr;gap:2px}
  .foot-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .a-crane{stroke-dashoffset:0}
}