@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--blue:#176DDD;--navy:#071D35;--navy2:#0D2B4B;--ink:#102540;--muted:#51647D;--pale:#F1F6FC;--line:#DCE6F2;--white:#fff}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{font-family:'DM Sans',sans-serif;color:var(--ink);line-height:1.65;background:#fff}
a{text-decoration:none;color:inherit}
.site-header{height:76px;padding:0 5.5%;display:flex;align-items:center;justify-content:space-between;gap:28px;background:#fff;position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(13,43,75,.08)}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}.brand-logo{width:48px;height:48px;object-fit:contain;display:block}.footer-logo{width:38px;height:38px;filter:none}.brand-name{font-size:9px;font-weight:700;line-height:1.35;letter-spacing:.6px}
.brand-mark{font-family:Manrope,sans-serif;font-weight:800;font-size:31px;letter-spacing:-2px;color:var(--navy)}
.dot{color:var(--blue)}
.nav-links{display:flex;gap:clamp(14px,2.3vw,34px);align-items:center}
.nav-links a,.footer-links a{font-size:12px;font-weight:600;transition:color .2s}
.nav-links a:hover,.footer-links a:hover{color:var(--blue)}
.button{display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:white;font-size:12px;font-weight:700;padding:13px 22px;border:1px solid var(--blue);transition:transform .2s,background .2s}
.button:hover{background:#0d58b8;transform:translateY(-2px)}
.button-small{padding:11px 17px;font-size:11px}
.menu-toggle{display:none;background:none;border:0;font-size:24px;color:var(--navy)}
.hero{position:relative;min-height:610px;display:flex;align-items:stretch;overflow:hidden;background:var(--navy)}
.hero-image{position:absolute;inset:0;background-image:url('hero-ssn.jpeg');background-position:center 48%;background-size:cover;opacity:.88}
.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,25,47,.98) 0%,rgba(6,32,58,.9) 30%,rgba(6,32,58,.42) 57%,rgba(6,32,58,.06) 100%),linear-gradient(0deg,rgba(4,25,47,.25),transparent 50%)}
.hero-content{position:relative;z-index:1;padding:78px 5.7% 25px;color:white;max-width:850px;width:100%;display:flex;flex-direction:column;align-items:flex-start}
.eyebrow{font-size:10px;font-weight:700;letter-spacing:2.4px;color:var(--blue);margin-bottom:23px}
.eyebrow.light{color:#C5DDF8}
h1,h2,h3{font-family:Manrope,sans-serif;line-height:1.15;letter-spacing:-1.2px}
h1{font-size:clamp(38px,5.2vw,68px);font-weight:800;max-width:850px}
h1 span,.section-heading h2 span,.about-copy h2 span,.commitment-copy h2 span,.contact-copy h2 span{color:var(--blue)}
.hero-copy{max-width:490px;color:#E2EAF4;font-size:14px;margin:24px 0}
.hero-actions{display:flex;align-items:center;gap:27px}
.text-link{font-size:12px;font-weight:700}
.light-link{color:#fff}
.hero-points{display:flex;margin-top:auto;padding-top:45px;gap:0}
.hero-points div{padding:0 25px;border-left:1px solid rgba(255,255,255,.28);display:flex;flex-direction:column;gap:5px}
.hero-points div:first-child{padding-left:0;border-left:0}
.hero-points b{font-size:10px;color:#AFC7E2;font-weight:500}
.hero-points span{font-size:9px;letter-spacing:1.5px;line-height:1.45;color:#E0E9F4}
.section{padding:62px 5.5%;display:grid;grid-template-columns:140px minmax(0,1fr);column-gap:30px}
.section-index{display:flex;flex-direction:column;align-items:flex-start;gap:4px;border-left:1px solid #A8C8F7;padding-left:12px;align-self:start;min-height:70px}
.section-index b,.contact-index b{color:var(--blue);font-size:13px}
.section-index span,.contact-index span{font-size:9px;color:var(--blue);letter-spacing:1.1px;font-weight:700}
.section-index small{font-size:10px;color:var(--muted);margin-top:7px}
.about-section{grid-template-columns:140px minmax(250px,1fr) minmax(220px,1fr) 120px;gap:28px;align-items:center}
.about-copy h2,.section-heading h2,.commitment-copy h2{font-size:clamp(25px,3vw,36px);font-weight:800}
.about-copy p{font-size:12px;color:var(--muted);margin-top:18px;max-width:480px}
.about-photo{min-height:210px;background:url('building-ssn.png') center/cover}
.about-values{display:flex;flex-direction:column;gap:18px}
.about-values p{font-size:9px;letter-spacing:1.1px;line-height:1.5;font-weight:700;color:#294567;border-bottom:1px solid var(--line);padding-bottom:12px}
.expertise-section{background:var(--pale);grid-template-columns:140px 1fr}
.section-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:35px}
.section-heading>p{font-size:12px;color:var(--muted);max-width:360px}
.expertise-grid{grid-column:2;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:28px}
.expertise-card{background:white;border:1px solid #E0E9F3;padding:22px 18px 0;min-height:300px;display:flex;flex-direction:column;overflow:hidden;position:relative}
.card-icon{font-size:28px;color:var(--blue);line-height:1;margin-bottom:18px}
.expertise-card h3{font-size:15px;letter-spacing:-.4px}
.expertise-card p{font-size:11px;color:var(--muted);margin:12px 0}
.expertise-card>a{font-size:10px;font-weight:700;color:var(--blue);margin-top:auto;padding-bottom:13px;z-index:1}
.card-image{height:92px;margin:0 -18px;background-size:cover;background-position:center}
.image-engineering{background-image:url('expertise-engineering.jpeg');background-position:center 58%}
.image-bridge{background-image:url('expertise-infrastructure.jpeg');background-position:center 48%}
.image-consultancy{background-image:url('https://images.unsplash.com/photo-1581092921461-eab62e97a780?auto=format&fit=crop&w=700&q=80')}
.image-maintenance{background-image:url('https://images.unsplash.com/photo-1511818966892-d7d671e672a2?auto=format&fit=crop&w=700&q=80')}
.projects-section{grid-template-columns:140px 1fr}
.project-heading{align-items:center}
.project-grid{grid-column:2;display:grid;grid-template-columns:1fr;gap:12px;margin-top:28px}
.project-card{border:1px solid var(--line);background:#fff;box-shadow:0 3px 12px rgba(12,43,75,.04)}
.project-image{height:135px;background-size:cover;background-position:center}
.project-bridge{background-image:url('https://images.unsplash.com/photo-1519501025264-65ba15a82390?auto=format&fit=crop&w=700&q=80')}
.project-highway{background-image:url('https://images.unsplash.com/photo-1519608487953-e999c86e7455?auto=format&fit=crop&w=700&q=80')}
.project-building{background-image:url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?auto=format&fit=crop&w=700&q=80')}
.project-coastal{background-image:url('https://images.unsplash.com/photo-1500375592092-40eb2168fd21?auto=format&fit=crop&w=700&q=80')}
.project-caption{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px;font-size:10px;font-weight:700}
.project-caption span:last-child{color:var(--blue);font-size:16px}
.disclaimer{grid-column:2;font-size:10px;color:#75869B;margin-top:12px}
.commitment-section{background:#F5F8FC;grid-template-columns:140px minmax(220px,1.2fr) repeat(4,minmax(100px,.7fr));gap:20px;align-items:center}
.commitment-copy p{font-size:11px;color:var(--muted);margin-top:14px;max-width:410px}
.commitment-item{display:flex;flex-direction:column;align-items:center;text-align:center;gap:9px}
.round-icon{height:49px;width:49px;border:2px solid #D9E7F8;border-radius:50%;display:grid;place-items:center;color:var(--blue);font-size:23px}
.commitment-item b{font-size:8px;line-height:1.45;letter-spacing:.4px}
.commitment-item small{font-size:9px;color:var(--muted);line-height:1.4}
.contact-section{background:linear-gradient(100deg,rgba(5,27,50,.98),rgba(9,44,78,.92)),url('https://images.unsplash.com/photo-1511818966892-d7d671e672a2?auto=format&fit=crop&w=1600&q=80') center/cover;color:white;padding:48px 5.5%;display:grid;grid-template-columns:140px minmax(260px,1fr) auto minmax(170px,.7fr);align-items:center;gap:30px}
.contact-index{border-left:1px solid #4776A9;padding-left:12px;display:flex;flex-direction:column;gap:4px;align-self:start;min-height:70px}
.contact-index b{color:#fff}.contact-index span{color:#69A8FF}
.contact-copy h2{font-size:clamp(24px,3vw,35px)}
.contact-copy h2 span{color:#4C98FF}
.contact-copy p{font-size:12px;color:#D0DCE9;margin-top:15px;max-width:430px}
.button-light{background:white;color:var(--blue);border-color:white;white-space:nowrap}
.button-light:hover{background:#EAF2FF}
.contact-details{border-left:1px solid rgba(255,255,255,.18);padding-left:24px;display:flex;flex-direction:column;gap:14px}
.contact-details p{display:flex;align-items:center;gap:12px;font-size:20px}
.contact-details p span{font-size:10px;color:#C8D7E7;line-height:1.4}
.contact-details b{font-size:11px;color:white;font-weight:600}
.site-footer{padding:22px 5.5%;display:flex;align-items:center;justify-content:space-between;gap:25px;background:#04172B;color:#fff}
.footer-brand .brand-name{font-size:8px}
.footer-links{display:flex;gap:18px}.footer-links a{font-size:10px;color:#D0DCE9}
.site-footer>small{font-size:9px;color:#AABBCD}
@media(max-width:1050px){.about-section{grid-template-columns:100px 1fr 1fr}.about-values{grid-column:2/-1;flex-direction:row;justify-content:space-between}.expertise-grid,.project-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.commitment-section{grid-template-columns:100px 1fr 1fr 1fr}.commitment-copy{grid-column:2/-1}.contact-section{grid-template-columns:100px 1fr auto}.contact-details{grid-column:2/-1;flex-direction:row;border-left:0;border-top:1px solid rgba(255,255,255,.18);padding:18px 0 0}.section{grid-template-columns:100px 1fr}}
@media(max-width:720px){.site-header{height:68px;padding:0 5%;gap:12px}.brand-name{display:none}.brand-logo{width:43px;height:43px}.menu-toggle{display:block;margin-left:auto}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:white;padding:18px 5%;box-shadow:0 10px 20px #071d3515;flex-direction:column;align-items:flex-start;gap:16px}.nav-links.open{display:flex}.header-cta{display:none}.hero{min-height:590px}.hero-content{padding:70px 6% 24px}.hero-shade{background:linear-gradient(90deg,rgba(4,25,47,.96),rgba(6,32,58,.62)),linear-gradient(0deg,rgba(4,25,47,.4),transparent)}h1{font-size:clamp(37px,10vw,54px)}.hero-copy{font-size:13px}.hero-points div{padding:0 13px}.hero-points span{font-size:8px;letter-spacing:.8px}.section,.about-section,.expertise-section,.projects-section,.commitment-section{display:grid;grid-template-columns:1fr;padding:48px 6%;gap:22px}.section-index{min-height:45px}.about-section{grid-template-columns:1fr}.about-photo{min-height:220px}.about-values{grid-column:auto;flex-wrap:wrap}.section-heading{flex-direction:column;gap:15px}.expertise-grid,.project-grid{grid-column:auto;grid-template-columns:1fr 1fr}.expertise-card{padding:18px 14px 0}.card-image{margin:0 -14px}.project-image{height:115px}.project-caption{font-size:9px;padding:10px}.disclaimer{grid-column:auto}.commitment-copy{grid-column:auto}.commitment-section{grid-template-columns:repeat(2,minmax(0,1fr))}.commitment-section .section-index,.commitment-copy{grid-column:1/-1}.contact-section{padding:44px 6%;grid-template-columns:1fr;gap:20px}.contact-index{min-height:45px}.contact-details{grid-column:auto;flex-direction:column}.site-footer{padding:24px 6%;align-items:flex-start;flex-direction:column}.footer-links{flex-wrap:wrap;gap:14px}.site-footer>small{line-height:1.5}}
@media(max-width:420px){.expertise-grid,.project-grid{grid-template-columns:1fr}.expertise-card{min-height:275px}.project-image{height:170px}.hero-points{width:100%;justify-content:space-between}.hero-points div{padding:0 8px}.hero-points div:first-child{padding-left:0}}

/* Actual project photos supplied by SSN */
.project-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.actual-project-image{display:block;width:100%;height:230px;object-fit:cover}
@media(max-width:720px){.project-grid{grid-template-columns:1fr}.actual-project-image{height:220px}}


/* Mobile refinement pass: spacing, readability, touch targets and image framing */
@media (max-width: 720px) {
  html { scroll-padding-top: 72px; }
  body { overflow-wrap: break-word; }
  .site-header { padding-inline: 18px; }
  .brand-logo { width: 42px; height: 42px; }
  .menu-toggle {
    min-width: 44px; min-height: 44px;
    display: grid; place-items: center;
    cursor: pointer;
  }
  .nav-links { padding: 20px 22px; }
  .nav-links a { font-size: 14px; padding: 5px 0; }
  .hero { min-height: 620px; }
  .hero-content { padding: 64px 22px 24px; }
  .hero .eyebrow { font-size: 9px; letter-spacing: 1.6px; line-height: 1.7; }
  h1 { font-size: clamp(35px, 9.2vw, 48px); letter-spacing: -1.1px; }
  .hero-copy { max-width: 38rem; font-size: 14px; line-height: 1.7; }
  .hero-actions { gap: 20px; flex-wrap: wrap; }
  .button { min-height: 44px; }
  .hero-points { gap: 0; padding-top: 38px; }
  .hero-points div { flex: 1; padding: 0 10px; }
  .hero-points span { font-size: 7px; letter-spacing: .7px; }
  .section, .about-section, .expertise-section, .projects-section,
  .commitment-section { padding: 44px 22px; gap: 20px; }
  .section-index { min-height: 42px; }
  .about-copy h2, .section-heading h2, .commitment-copy h2 {
    font-size: clamp(27px, 7.2vw, 34px);
  }
  .about-copy p, .section-heading > p, .commitment-copy p {
    font-size: 13px; line-height: 1.75;
  }
  .about-photo { min-height: 205px; }
  .about-values { gap: 12px; }
  .about-values p { flex: 1 1 42%; font-size: 8px; }
  .expertise-grid { grid-template-columns: 1fr; gap: 16px; }
  .expertise-card { min-height: 0; padding: 22px 18px 0; }
  .expertise-card h3 { font-size: 18px; }
  .expertise-card p { font-size: 13px; line-height: 1.65; }
  .expertise-card > a { font-size: 12px; padding: 8px 0 16px; }
  .card-image { height: 150px; margin-inline: -18px; }
  .project-grid { grid-template-columns: 1fr; gap: 18px; }
  .actual-project-image, .project-image { height: 215px; }
  .project-caption { font-size: 12px; padding: 14px; }
  .disclaimer { font-size: 10px; line-height: 1.6; }
  .commitment-section { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .commitment-item { min-height: 120px; justify-content: flex-start; }
  .commitment-item b { font-size: 9px; }
  .commitment-item small { font-size: 10px; }
  .contact-section { padding: 42px 22px; gap: 22px; }
  .contact-copy h2 { font-size: clamp(27px, 7vw, 34px); }
  .contact-copy p { font-size: 13px; line-height: 1.7; }
  .contact-details { gap: 18px; }
  .contact-details p span { font-size: 11px; }
  .contact-details b { font-size: 12px; overflow-wrap: anywhere; }
  .site-footer { padding: 24px 22px; gap: 18px; }
  .footer-links { gap: 14px 18px; }
  .footer-links a { font-size: 11px; padding: 4px 0; }
  .site-footer > small { font-size: 10px; }
}
@media (max-width: 380px) {
  .hero-content { padding-inline: 18px; }
  h1 { font-size: 34px; }
  .hero-points div { padding-inline: 6px; }
  .hero-points span { font-size: 6.5px; }
  .section, .about-section, .expertise-section, .projects-section,
  .commitment-section { padding-inline: 18px; }
  .contact-section { padding-inline: 18px; }
}


/* Tablet layout refinement */
@media (min-width: 721px) and (max-width: 1050px) {
  .site-header { padding-inline: 3.5%; gap: 16px; }
  .brand { gap: 9px; }
  .brand-logo { width: 42px; height: 42px; }
  .brand-name { font-size: 8px; }
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 11px; }
  .header-cta { padding: 10px 12px; }
  .hero-content { padding-inline: 4.5%; }
  .hero h1 { font-size: clamp(42px, 5vw, 58px); }
  .section, .about-section, .expertise-section, .projects-section,
  .commitment-section { padding-inline: 4%; }
  .expertise-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-section { padding-inline: 4%; gap: 20px; }
  .footer-links { gap: 12px; }
}


/* Cross-device safety */
img { max-width: 100%; }
.hero-image, .about-photo, .card-image, .project-image { background-repeat: no-repeat; }
@media (max-width: 720px) {
  .site-header { width: 100%; }
  .hero-shade { pointer-events: none; }
  .about-values p { min-width: 0; }
  .expertise-card, .project-card { min-width: 0; }
  .contact-details p { min-width: 0; }
}