:root {
  --helis-blue: #0872bd;
  --helis-pink: #ed0876;
  --helis-orange: #f6a11a;
  --helis-ink: #101923;
  --helis-muted: #5e6873;
  --helis-line: #dfe5eb;
  --helis-soft: #f3f6f9;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--helis-ink);
  background: #fff;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  line-height: 1.65;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
.seo-container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.seo-skip { position: fixed; left: 12px; top: -80px; z-index: 999; padding: 10px 14px; background: #fff; color: #111; }
.seo-skip:focus { top: 12px; }

.seo-topbar { background: #111b25; color: #e8eef4; font-size: 13px; }
.seo-topbar .seo-container { min-height: 34px; display: flex; justify-content: space-between; align-items: center; gap: 22px; }
.seo-topbar__contact { display: flex; gap: 22px; flex-wrap: wrap; }
.seo-topbar a { text-decoration: none; }
.seo-topbar a:hover { color: #fff; }
.seo-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.97); border-bottom: 1px solid rgba(16,25,35,.09); backdrop-filter: blur(12px); }
.seo-header .seo-container { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.seo-logo img { width: 178px; height: auto; }
.seo-nav { display: flex; align-items: center; gap: 27px; font-size: 14px; font-weight: 700; }
.seo-nav a { text-decoration: none; }
.seo-nav a:hover, .seo-nav a[aria-current="page"] { color: var(--helis-blue); }
.seo-nav__cta { padding: 11px 17px; color: #fff !important; background: var(--helis-pink); border-radius: 7px; }

.seo-hero { position: relative; min-height: 650px; display: grid; align-items: center; overflow: hidden; color: #fff; background: #101923; }
.seo-hero__media, .seo-hero__media::after { position: absolute; inset: 0; }
.seo-hero__media img { width: 100%; height: 100%; object-fit: cover; }
.seo-hero__media::after { content: ""; background: linear-gradient(90deg, rgba(5,15,27,.95) 0%, rgba(5,15,27,.83) 42%, rgba(5,15,27,.28) 76%, rgba(5,15,27,.18) 100%); }
.seo-hero__content { position: relative; z-index: 2; max-width: 760px; padding: 90px 0 98px; }
.seo-eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; color: var(--helis-orange); font-size: 13px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.seo-eyebrow::before { content: ""; width: 34px; height: 3px; background: linear-gradient(90deg,var(--helis-pink),var(--helis-orange),var(--helis-blue)); }
.seo-hero h1 { max-width: 750px; margin: 0; font-size: clamp(42px, 5.2vw, 72px); line-height: 1.04; letter-spacing: -.035em; }
.seo-hero h1 span { color: var(--helis-orange); }
.seo-hero__lead { max-width: 670px; margin: 25px 0 0; color: #e4eaf0; font-size: 19px; }
.seo-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 34px; }
.seo-button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 22px; border: 1px solid rgba(255,255,255,.55); border-radius: 7px; color: #fff; font-weight: 800; text-decoration: none; }
.seo-button--primary { background: var(--helis-pink); border-color: var(--helis-pink); }
.seo-button:hover { transform: translateY(-1px); }
.seo-proofline { display: flex; gap: 24px; flex-wrap: wrap; margin: 30px 0 0; padding: 0; list-style: none; color: #f0f4f7; font-size: 14px; }
.seo-proofline li::before { content: "✓"; display: inline-grid; place-items: center; width: 21px; height: 21px; margin-right: 8px; border: 1px solid var(--helis-blue); border-radius: 50%; color: var(--helis-orange); font-weight: 900; }

.seo-section { padding: 88px 0; }
.seo-section--soft { background: var(--helis-soft); }
.seo-section__head { max-width: 780px; margin-bottom: 38px; }
.seo-kicker { margin: 0 0 8px; color: var(--helis-blue); font-size: 14px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.seo-section h2 { margin: 0; font-size: clamp(30px, 3.5vw, 46px); line-height: 1.15; letter-spacing: -.025em; }
.seo-section__head > p:last-child { margin: 16px 0 0; color: var(--helis-muted); font-size: 18px; }
.seo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.seo-card { padding: 30px; background: #fff; border: 1px solid var(--helis-line); border-radius: 12px; box-shadow: 0 14px 35px rgba(13,31,48,.06); }
.seo-card__number { color: var(--helis-pink); font-weight: 900; }
.seo-card h3 { margin: 12px 0 8px; font-size: 22px; line-height: 1.25; }
.seo-card p { margin: 0; color: var(--helis-muted); }

.seo-projects { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 18px; }
.seo-project { position: relative; min-height: 430px; overflow: hidden; border-radius: 13px; color: #fff; }
.seo-project img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.seo-project::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg,rgba(7,15,24,.92),rgba(7,15,24,.04) 72%); }
.seo-project__content { position: absolute; inset: auto 25px 24px; z-index: 2; }
.seo-project__meta { color: #fbc96d; font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.seo-project h3 { margin: 5px 0 7px; font-size: 25px; }
.seo-project p { margin: 0; color: #e6ecf1; font-size: 14px; }
.seo-project:hover img { transform: scale(1.025); }

.seo-split { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 58px; }
.seo-split__image { overflow: hidden; border-radius: 14px; box-shadow: 0 20px 50px rgba(12,27,40,.15); }
.seo-split__image img { width: 100%; min-height: 480px; object-fit: cover; }
.seo-list { margin: 25px 0 0; padding: 0; list-style: none; }
.seo-list li { position: relative; padding: 10px 0 10px 29px; border-bottom: 1px solid var(--helis-line); }
.seo-list li::before { content: "✓"; position: absolute; left: 0; color: var(--helis-blue); font-weight: 900; }
.seo-inline-link { display: inline-block; margin-top: 25px; color: var(--helis-blue); font-weight: 800; text-decoration-thickness: 2px; text-underline-offset: 4px; }

.seo-locations { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
.seo-location { padding: 22px; background: #fff; border-left: 4px solid var(--helis-blue); border-radius: 7px; box-shadow: 0 10px 25px rgba(15,31,46,.06); }
.seo-location strong { display: block; font-size: 18px; }
.seo-location span { color: var(--helis-muted); font-size: 14px; }

.seo-faq { max-width: 900px; }
.seo-faq details { border-bottom: 1px solid var(--helis-line); }
.seo-faq summary { cursor: pointer; padding: 22px 45px 22px 0; font-size: 19px; font-weight: 800; }
.seo-faq p { margin: 0; padding: 0 35px 22px 0; color: var(--helis-muted); }
.seo-faq summary::marker { color: var(--helis-pink); }

.seo-cta { padding: 66px 0; color: #fff; background: linear-gradient(120deg,#0872bd,#075b9b 70%,#101923); }
.seo-cta .seo-container { display: flex; justify-content: space-between; align-items: center; gap: 35px; }
.seo-cta h2 { margin: 0; max-width: 760px; font-size: clamp(29px,3.3vw,44px); line-height: 1.15; }
.seo-cta p { margin: 13px 0 0; color: #e4eef6; }
.seo-footer { padding: 46px 0 28px; color: #d2d9df; background: #111820; }
.seo-footer__grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 40px; }
.seo-footer img { width: 165px; filter: none; }
.seo-footer h2 { margin: 0 0 12px; color: #fff; font-size: 16px; }
.seo-footer ul { margin: 0; padding: 0; list-style: none; }
.seo-footer li { margin: 7px 0; }
.seo-footer a { text-decoration: none; }
.seo-footer a:hover { color: #fff; }
.seo-footer__bottom { margin-top: 35px; padding-top: 20px; border-top: 1px solid #29343e; font-size: 13px; }

/* Global WhatsApp contact button */
.helis-whatsapp-float { position: fixed; z-index: 1000; bottom: 24px; left: 24px; display: grid; width: 60px; height: 60px; place-items: center; border: 2px solid rgba(255,255,255,.9); border-radius: 50%; color: #fff; background: #25d366; box-shadow: 0 12px 30px rgba(7,61,29,.28); isolation: isolate; transition: transform .25s ease, background-color .25s ease, box-shadow .25s ease; }
.helis-whatsapp-float::before { content: ""; position: absolute; z-index: -1; inset: -2px; border: 2px solid rgba(37,211,102,.75); border-radius: inherit; animation: helis-whatsapp-pulse 2.4s ease-out infinite; }
.helis-whatsapp-float:hover, .helis-whatsapp-float:focus { color: #fff; background: #1fbd59; box-shadow: 0 15px 34px rgba(7,61,29,.36); transform: translateY(-3px) scale(1.04); }
.helis-whatsapp-float:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
.helis-whatsapp-float__icon { display: block; width: 34px; height: 34px; }
.helis-whatsapp-float__sr { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@keyframes helis-whatsapp-pulse { 0% { opacity: .75; transform: scale(.9); } 75%, 100% { opacity: 0; transform: scale(1.5); } }

@media (prefers-reduced-motion: reduce) {
  .helis-whatsapp-float, .helis-whatsapp-float::before { animation: none; transition: none; }
}

@media (max-width: 900px) {
  .seo-nav a:not(.seo-nav__cta) { display: none; }
  .seo-grid, .seo-projects { grid-template-columns: 1fr 1fr; }
  .seo-project:first-child { grid-column: 1 / -1; }
  .seo-split { grid-template-columns: 1fr; gap: 35px; }
  .seo-locations { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .helis-whatsapp-float { bottom: 16px; left: 16px; width: 54px; height: 54px; }
  .helis-whatsapp-float__icon { width: 30px; height: 30px; }
  .seo-container { width: calc(100% - 28px); }
  .seo-topbar .seo-container { padding: 8px 0; }
  .seo-topbar__contact { gap: 5px 14px; }
  .seo-topbar__social { display: none; }
  .seo-header .seo-container { min-height: 68px; }
  .seo-logo img { width: 138px; }
  .seo-nav { display: none; }
  .seo-hero { min-height: 650px; }
  .seo-hero__media::after { background: rgba(5,15,27,.72); }
  .seo-hero__content { padding: 70px 0 78px; }
  .seo-hero h1 { max-width: 100%; font-size: 38px; overflow-wrap: anywhere; }
  .seo-hero__lead { font-size: 17px; }
  .seo-section { padding: 66px 0; }
  .seo-grid, .seo-projects, .seo-locations, .seo-footer__grid { grid-template-columns: 1fr; }
  .seo-project:first-child { grid-column: auto; }
  .seo-project { min-height: 380px; }
  .seo-cta .seo-container { display: block; }
  .seo-cta .seo-button { margin-top: 25px; }
}