:root {
  --navy: #0B1F3A;
  --yellow: #F5B301;
  --white: #FFFFFF;
  --light: #F4F6F8;
  --dark: #2B2B2B;
  --radius: 0.625rem;
  --shadow-sm: 0 1px 2px rgba(43, 43, 43, 0.05);
  --shadow-md: 0 4px 12px rgba(43, 43, 43, 0.08);
  --shadow-lg: 0 12px 32px rgba(43, 43, 43, 0.12);
  --transition-fast: 150ms cubic-bezier(0.4,0,0.2,1);
  --transition: 200ms cubic-bezier(0.4,0,0.2,1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--white); color: var(--dark); font-family: Arial, Helvetica, sans-serif; line-height: 1.5; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
img { display: block; max-width: 100%; }
.site-header { position: sticky; top: 0; z-index: 40; border-bottom: 1px solid var(--light); background: rgba(255,255,255,0.95); backdrop-filter: blur(8px); }
.navbar { max-width: 80rem; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 1rem; }
.brand { display: flex; align-items: center; gap: 0.5rem; border-radius: 0.375rem; font-weight: 700; letter-spacing: -0.025em; color: var(--navy); }
.brand-mark { display: flex; width: 2.5rem; height: 2.5rem; align-items: center; justify-content: center; border-radius: 0.375rem; background: var(--navy); color: var(--white); font-weight: 700; }
.nav-links { display: none; align-items: center; gap: 0.5rem; }
.nav-link { display: inline-flex; align-items: center; gap: 0.25rem; border-radius: 0.375rem; padding: 0.5rem 0.75rem; font-size: 0.875rem; font-weight: 500; transition: background var(--transition-fast), color var(--transition-fast); }
.nav-link:hover, .nav-link.active { background: var(--light); color: var(--navy); }
.nav-group { position: relative; }
.dropdown { visibility: hidden; position: absolute; left: 0; top: 2.5rem; min-width: 12rem; border: 1px solid var(--light); border-radius: 0.5rem; background: var(--white); padding: 0.5rem; opacity: 0; box-shadow: var(--shadow-md); transition: opacity var(--transition); }
.nav-group:hover .dropdown, .nav-group:focus-within .dropdown { visibility: visible; opacity: 1; }
.dropdown .nav-link { display: flex; width: 100%; }
.menu-button, .mobile-close { border: 0; border-radius: 0.375rem; padding: 0.5rem; background: transparent; color: var(--dark); cursor: pointer; transition: background var(--transition-fast); }
.menu-button:hover, .mobile-close:hover { background: var(--light); }
.mobile-panel { position: fixed; inset: 0; z-index: 50; display: none; background: rgba(11, 31, 58, 0.70); }
.mobile-panel.open { display: block; }
.mobile-sheet { margin-left: auto; min-height: 100vh; width: 100%; max-width: 24rem; background: var(--white); color: var(--dark); padding: 1.5rem; box-shadow: var(--shadow-lg); }
.mobile-head { display: flex; align-items: center; justify-content: space-between; }
.mobile-links { margin-top: 2rem; display: grid; gap: 0.5rem; }
.container { max-width: 80rem; margin: 0 auto; padding-left: 1rem; padding-right: 1rem; }
.section { padding-top: 3rem; padding-bottom: 3rem; }
.eyebrow { margin: 0; color: var(--dark); font-size: 0.875rem; font-weight: 500; opacity: 0.82; }
.eyebrow-primary { color: var(--navy); opacity: 1; }
.eyebrow-yellow { color: var(--yellow); opacity: 1; text-transform: uppercase; letter-spacing: 0.2em; }
h1, h2, h3, p { margin-top: 0; }
.title-xl { margin: 0.75rem 0 0; color: var(--dark); font-size: 2.25rem; line-height: 1.12; font-weight: 700; letter-spacing: -0.025em; }
.title-lg { margin: 0.75rem 0 0; color: var(--dark); font-size: 1.875rem; line-height: 1.2; font-weight: 600; letter-spacing: -0.025em; }
.copy { margin: 1rem 0 0; color: var(--dark); opacity: 0.82; }
.copy-sm { margin: 0.75rem 0 0; color: var(--dark); opacity: 0.82; font-size: 0.875rem; }
.max-2xl { max-width: 42rem; }
.max-3xl { max-width: 48rem; }
.max-prose { max-width: 65ch; }
.grid { display: grid; gap: 1.5rem; }
.two-col, .about-grid, .contact-grid, .detail-grid, .testimonial-grid { display: grid; gap: 2rem; }
.cards-3, .cards-4 { display: grid; gap: 1.5rem; }
.card { border: 1px solid var(--light); border-radius: 0.5rem; background: var(--white); color: var(--dark); padding: 1.5rem; box-shadow: var(--shadow-sm); transition: transform var(--transition), box-shadow var(--transition); }
.card.interactive:hover, .project-card:hover { transform: translateY(-0.125rem); box-shadow: var(--shadow-md); }
.card.flush { overflow: hidden; padding: 0; }
.card-body { padding: 1.5rem; }
.card-title { margin: 0.5rem 0 0; font-size: 1.25rem; line-height: 1.25; font-weight: 600; letter-spacing: -0.025em; }
.card-title-sm { margin: 0.5rem 0 0; font-size: 1.125rem; line-height: 1.35; font-weight: 600; letter-spacing: -0.025em; }
.smart-img { width: 100%; object-fit: cover; background: var(--light); }
.rounded-xl { border-radius: 0.75rem; }
.rounded-lg-top { border-radius: 0.5rem 0.5rem 0 0; }
.aspect-4-3 { aspect-ratio: 4 / 3; }
.aspect-4-5 { aspect-ratio: 4 / 5; }
.aspect-16-10 { aspect-ratio: 16 / 10; }
.btn { display: inline-flex; min-height: 2.5rem; align-items: center; justify-content: center; gap: 0.5rem; border-radius: 0.375rem; border: 1px solid transparent; padding: 0.5rem 1.25rem; font-size: 0.875rem; font-weight: 500; cursor: pointer; transition: transform var(--transition), box-shadow var(--transition), background var(--transition-fast); }
.btn:focus-visible, .nav-link:focus-visible, .menu-button:focus-visible, .mobile-close:focus-visible, .dot:focus-visible, .faq-button:focus-visible, .filter-btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--yellow); outline-offset: 2px; }
.btn:hover { transform: translateY(-0.125rem); box-shadow: var(--shadow-md); }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--navy); color: var(--white); }
.btn-yellow { background: var(--yellow); color: var(--dark); }
.btn-outline-light { border-color: var(--white); color: var(--white); background: transparent; }
.btn-outline-light:hover { background: rgba(255,255,255,0.10); }
.btn:disabled { cursor: not-allowed; opacity: 0.5; transform: none; box-shadow: none; }
.hero-video-shell { position: relative; min-height: 100vh; width: 100vw; overflow: hidden; display: grid; place-items: center; background: var(--navy); }
.hero-video { position: absolute; inset: 0; width: 100vw; height: 100vh; object-fit: cover; z-index: 0; }
.hero-overlay { position: absolute; inset: 0; z-index: 1; background: linear-gradient(90deg, rgba(11, 31, 58, 0.72), rgba(43, 43, 43, 0.62)); }
.hero-content { position: relative; z-index: 2; max-width: 64rem; margin: 0 auto; padding: 0 1rem; text-align: center; }
.hero-title { margin: 1rem 0 0; color: var(--white); font-size: 2.25rem; line-height: 1.1; font-weight: 700; letter-spacing: -0.025em; }
.hero-copy { max-width: 65ch; margin: 1.5rem auto 0; color: rgba(255,255,255,0.80); font-size: 1.125rem; }
.hero-actions { margin-top: 2rem; display: flex; flex-direction: column; justify-content: center; gap: 1rem; }
.light-band { background: var(--light); }
.navy-band { background: var(--navy); color: var(--white); }
.stats-grid { display: grid; gap: 1.5rem; text-align: center; }
.stat-number { margin: 0; color: var(--yellow); font-size: 2.25rem; line-height: 1.1; font-weight: 700; letter-spacing: -0.025em; }
.stat-text { margin: 0.5rem 0 0; color: rgba(255,255,255,0.80); font-size: 0.875rem; }
.stat-card .stat-number { color: var(--navy); }
.stat-card .stat-text { color: var(--dark); opacity: 0.82; }
.section-head-row { display: flex; flex-direction: column; gap: 1rem; justify-content: space-between; }
.text-link { color: var(--navy); font-size: 0.875rem; font-weight: 500; }
.text-link:hover { text-decoration: underline; }
.testimonial-avatar { width: 4rem; height: 4rem; border-radius: 999px; object-fit: cover; }
.testimonial-head { display: flex; align-items: center; gap: 1rem; }
.testimonial-quote { margin-top: 1.5rem; font-size: 1.125rem; color: var(--dark); opacity: 0.82; }
.dots { display: flex; gap: 0.5rem; margin-top: 1.5rem; }
.dot { width: 0.75rem; height: 0.75rem; border: 0; border-radius: 999px; background: var(--light); cursor: pointer; }
.dot.active { background: var(--navy); }
.faq-list { display: grid; gap: 1rem; margin-top: 2rem; }
.faq-item { border: 1px solid var(--light); border-radius: 0.5rem; background: var(--white); }
.faq-button { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem; border: 0; background: transparent; padding: 1.25rem; text-align: left; color: var(--dark); font-weight: 500; cursor: pointer; }
.faq-answer { display: none; padding: 0 1.25rem 1.25rem; color: var(--dark); opacity: 0.82; font-size: 0.875rem; }
.faq-item.open .faq-answer { display: block; }
.faq-chevron { transition: transform var(--transition); }
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.cta-image-section { margin-top: 3rem; margin-bottom: 3rem; overflow: hidden; border-radius: 0.75rem; padding: 4rem 1rem; text-align: center; background: linear-gradient(90deg, rgba(11, 31, 58, 0.94), rgba(43, 43, 43, 0.72)), url('../images/hero/cta-construction-site.jpg'); background-size: cover; background-position: center; }
.cta-image-section h2 { max-width: 48rem; margin: 0 auto; color: var(--white); font-size: 1.875rem; line-height: 1.2; font-weight: 600; letter-spacing: -0.025em; }
.cta-image-section p { max-width: 65ch; margin: 1rem auto 0; color: rgba(255,255,255,0.80); }
.site-footer { background: var(--navy); color: var(--white); }
.footer-grid { max-width: 80rem; margin: 0 auto; display: grid; gap: 2rem; padding: 3rem 1rem; }
.footer-brand { margin: 0; font-size: 1.25rem; font-weight: 600; letter-spacing: -0.025em; }
.footer-copy, .footer-links, .footer-office { color: rgba(255,255,255,0.80); font-size: 0.875rem; }
.footer-copy { max-width: 65ch; margin-top: 0.75rem; }
.footer-links { display: grid; gap: 0.5rem; margin-top: 1rem; }
.footer-links a:hover { color: var(--yellow); }
.footer-title { margin: 0; font-size: 0.875rem; font-weight: 600; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.20); padding: 1rem; text-align: center; color: rgba(255,255,255,0.70); font-size: 0.875rem; }
.filter-row { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.filter-btn { border: 0; border-radius: 0.375rem; padding: 0.5rem 1rem; background: var(--light); color: var(--dark); font-size: 0.875rem; font-weight: 500; cursor: pointer; transition: background var(--transition-fast), color var(--transition-fast); }
.filter-btn.active { background: var(--navy); color: var(--white); }
.project-card { overflow: hidden; border: 1px solid var(--light); border-radius: 0.5rem; background: var(--white); box-shadow: var(--shadow-sm); transition: transform var(--transition), box-shadow var(--transition); }
.back-link { color: var(--navy); font-size: 0.875rem; font-weight: 500; }
.detail-list { margin-top: 2rem; display: grid; gap: 1rem; font-size: 0.875rem; }
.detail-list dt { font-weight: 500; }
.detail-list dd { margin: 0; color: var(--dark); opacity: 0.82; }
.job-icon { display: flex; width: 3rem; height: 3rem; flex-shrink: 0; align-items: center; justify-content: center; border-radius: 999px; background: var(--light); color: var(--navy); font-weight: 700; }
.job-card { display: grid; gap: 1rem; }
.job-content { display: flex; gap: 1rem; }
.office-grid { margin-top: 2rem; display: grid; gap: 1rem; }
.form-grid { display: grid; gap: 1rem; }
label { font-size: 0.875rem; font-weight: 500; }
input, select, textarea { width: 100%; margin-top: 0.5rem; border: 1px solid var(--light); border-radius: 0.375rem; background: var(--white); color: var(--dark); padding: 0.75rem 1rem; font-size: 0.875rem; outline: none; }
input.error, textarea.error { border-color: var(--yellow); }
.field-error { margin: 0.25rem 0 0; color: var(--dark); font-size: 0.875rem; font-weight: 500; }
.form-message { display: none; border: 1px solid var(--light); border-radius: 0.5rem; padding: 1rem; font-size: 0.875rem; }
.form-message.show { display: block; }
.form-message.success { background: var(--light); color: var(--navy); }
.form-message.error { background: var(--light); color: var(--dark); }
.toast-area { position: fixed; right: 1rem; top: 5rem; z-index: 60; display: grid; width: calc(100% - 2rem); max-width: 28rem; gap: 0.75rem; }
.toast { border: 1px solid var(--light); border-radius: 0.5rem; background: var(--white); padding: 1rem; color: var(--dark); box-shadow: var(--shadow-md); font-size: 0.875rem; }
.back-to-top { position: fixed; right: 1rem; bottom: 1.5rem; z-index: 30; display: none; border: 0; border-radius: 999px; background: var(--yellow); color: var(--dark); padding: 0.75rem; box-shadow: var(--shadow-md); cursor: pointer; transition: transform var(--transition), box-shadow var(--transition); }
.back-to-top.visible { display: inline-flex; }
.back-to-top:hover { transform: translateY(-0.125rem); box-shadow: var(--shadow-lg); }
@media (min-width: 640px) { .navbar { padding-left: 1.5rem; padding-right: 1.5rem; } .container { padding-left: 1.5rem; padding-right: 1.5rem; } .section { padding-top: 4rem; padding-bottom: 4rem; } .hero-title { font-size: 3rem; } .hero-actions { flex-direction: row; } .footer-grid { padding-left: 1.5rem; padding-right: 1.5rem; } }
@media (min-width: 768px) { .two-col, .about-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .contact-grid { grid-template-columns: 0.9fr 1.1fr; } .detail-grid { grid-template-columns: 1.1fr 0.9fr; } .testimonial-grid { grid-template-columns: 1fr 1.4fr; } .cards-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } .cards-4, .stats-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } .footer-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } .footer-about { grid-column: span 2 / span 2; } .section-head-row { flex-direction: row; align-items: flex-end; } .job-card { grid-template-columns: 1fr auto; align-items: center; } }
@media (min-width: 1024px) { .nav-links { display: flex; } .menu-button { display: none; } .container { padding-left: 2rem; padding-right: 2rem; } .section { padding-top: 6rem; padding-bottom: 6rem; } .cards-2-lg { grid-template-columns: repeat(2, minmax(0, 1fr)); } .cards-3-lg { grid-template-columns: repeat(3, minmax(0, 1fr)); } .footer-grid { padding-left: 2rem; padding-right: 2rem; } }
@media (max-width: 1024px) { .hero-video-shell { min-height: 92vh; } }
@media (max-width: 768px) { .hero-video-shell { min-height: 88vh; } .hero-content { padding-top: 4rem; } }