:root {
  --ink: #0f1e2e;
  --ink-2: #1b2f45;
  --paper: #f6f4ef;
  --paper-2: #ece8df;
  --line: #d9d3c6;
  --text: #1a2330;
  --muted: #5b6676;
  --accent: #d9462b;      /* survey-stake red */
  --accent-2: #e8b04a;
  --radius: 14px;
  --wrap: 1180px;
  --font: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --shadow: 0 1px 2px rgb(15 30 46 / .06), 0 12px 32px -12px rgb(15 30 46 / .18);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -.02em; }
.mono { font-family: var(--mono); letter-spacing: .02em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.accent { color: var(--accent); }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 100; background: #fff; padding: 8px 12px; border-radius: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 22px; border-radius: 999px; border: 1.5px solid var(--accent);
  background: var(--accent); color: #fff; font: 600 15px/1 var(--font);
  text-decoration: none; cursor: pointer; transition: transform .15s, background .15s, color .15s;
}
.btn:hover { transform: translateY(-1px); background: #c13a21; border-color: #c13a21; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn--sm { padding: 10px 16px; font-size: 14px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgb(246 244 239 / .85); backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent; transition: border-color .2s;
}
.nav.is-scrolled { border-bottom-color: var(--line); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-size: 18px; }
.brand__mark { width: 30px; height: 30px; fill: none; stroke: var(--ink); stroke-width: 2.4; }
.brand__mark circle { stroke: var(--accent); }
.brand__text strong { font-weight: 800; }
.nav__menu { display: flex; align-items: center; gap: 28px; }
.nav__menu a:not(.btn) { text-decoration: none; font-weight: 600; font-size: 15px; color: var(--muted); }
.nav__menu a:not(.btn):hover { color: var(--ink); }
.nav__toggle { display: none; }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 72px 0 96px; }
.hero__grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 20%, transparent 75%);
  opacity: .55;
}
.hero__inner { position: relative; display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center; }
.eyebrow { font-size: 13px; color: var(--accent); text-transform: uppercase; margin: 0 0 16px; }
.hero h1 { font-size: clamp(36px, 5vw, 60px); font-weight: 800; color: var(--ink); }
.lead { font-size: 18px; color: var(--muted); margin: 22px 0 32px; max-width: 34em; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero__facts { display: flex; gap: 36px; margin: 44px 0 0; padding-top: 24px; border-top: 1px solid var(--line); }
.hero__facts dt { font: 700 26px/1 var(--font); color: var(--ink); }
.hero__facts dd { margin: 6px 0 0; font-size: 13px; color: var(--muted); }

.hero__visual { position: relative; margin: 0; }
.hero__visual .zoom { border-radius: var(--radius); box-shadow: var(--shadow); transform: rotate(-1.2deg); }
.hero__visual figcaption { margin-top: 14px; font-size: 12px; color: var(--muted); text-align: right; }
.tick { position: absolute; width: 28px; height: 28px; border: 2px solid var(--accent); }
.tick--tl { top: -14px; left: -14px; border-right: 0; border-bottom: 0; }
.tick--br { bottom: 22px; right: -14px; border-left: 0; border-top: 0; }

.zoom {
  display: block; width: 100%; padding: 0; border: 0; background: #fff; cursor: zoom-in;
  overflow: hidden; border-radius: inherit;
}
.zoom img { transition: transform .4s ease; }
.zoom:hover img { transform: scale(1.03); }

/* Sections */
.section { padding: 104px 0; }
.section--alt { background: var(--paper-2); }
.section--dark { background: var(--ink); color: #e9eef4; }
.section--dark h2, .section--dark h3 { color: #fff; }
.section__head { max-width: 720px; margin-bottom: 52px; }
.section__head h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; color: var(--ink); }
.section--dark .section__head h2 { color: #fff; }
.section__sub { color: var(--muted); margin: 12px 0 0; }

/* Services */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: border-color .2s, transform .2s, box-shadow .2s;
}
.card:hover { border-color: var(--ink); transform: translateY(-3px); box-shadow: var(--shadow); }
.card--wide { grid-row: span 2; background: var(--ink); color: #dfe6ee; border-color: var(--ink); }
.card.card--wide h3 { color: #fff; }
.card--wide .card__icon { stroke: var(--accent-2); }
.card--wide .ticks li::before { border-color: var(--accent-2); }
.card__no { position: absolute; top: 24px; right: 26px; font-size: 13px; color: var(--muted); }
.card--wide .card__no { color: #8da0b5; }
.card__icon { width: 44px; height: 44px; fill: none; stroke: var(--accent); stroke-width: 2.2; stroke-linejoin: round; stroke-linecap: round; margin-bottom: 20px; }
.card h3 { font-size: 20px; font-weight: 700; color: var(--ink); margin-bottom: 12px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.ticks { list-style: none; margin: 0; padding: 0; font-size: 15px; }
.ticks li { position: relative; padding: 7px 0 7px 26px; border-top: 1px dashed rgb(127 140 155 / .35); }
.ticks li:first-child { border-top: 0; }
.ticks li::before {
  content: ""; position: absolute; left: 2px; top: 14px; width: 10px; height: 10px;
  border: 2px solid var(--accent); transform: rotate(45deg);
}
.card:not(.card--wide) .ticks { color: var(--muted); }
.card.card--cta {
  display: flex; flex-direction: column; justify-content: flex-end; text-decoration: none;
  background: var(--accent); border-color: var(--accent); color: #fff;
}
.card.card--cta h3 { color: #fff; }
.card.card--cta p { color: rgb(255 255 255 / .85); }
.card__arrow { position: absolute; top: 22px; right: 26px; font-size: 26px; transition: transform .2s; }
.card--cta:hover .card__arrow { transform: translateX(4px); }

/* Gallery */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.shot { margin: 0; grid-column: span 2; }
.shot--lg { grid-column: span 4; }
.shot .zoom { border-radius: var(--radius); border: 1px solid var(--line); aspect-ratio: 16 / 10; }
.shot--lg .zoom { aspect-ratio: 21 / 9; }
.shot img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.shot figcaption { display: flex; align-items: center; gap: 10px; margin-top: 10px; font-weight: 600; font-size: 15px; color: var(--ink); }
.shot figcaption .mono { font-size: 11px; font-weight: 500; color: #fff; background: var(--ink); padding: 3px 7px; border-radius: 4px; }

/* Process */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: s; }
.steps li { position: relative; padding: 28px 24px 0 0; border-top: 2px solid var(--ink); }
.steps li::before {
  content: ""; position: absolute; top: -7px; left: 0; width: 12px; height: 12px;
  background: var(--paper); border: 2px solid var(--accent); border-radius: 50%;
}
.steps .mono { font-size: 13px; color: var(--accent); }
.steps h3 { font-size: 19px; margin: 8px 0 8px; color: var(--ink); }
.steps p { margin: 0; color: var(--muted); font-size: 15px; }

/* Contact */
.team { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.person {
  display: flex; gap: 20px; align-items: flex-start; padding: 28px;
  border: 1px solid rgb(255 255 255 / .12); border-radius: var(--radius); background: var(--ink-2);
}
.person__avatar {
  flex: none; width: 60px; height: 60px; border-radius: 50%; display: grid; place-items: center;
  font: 700 18px/1 var(--font); color: var(--ink); background: var(--accent-2);
}
.person h3 { font-size: 21px; }
.person__role { margin: 4px 0 16px; color: #9fb0c3; font-size: 15px; }
.person__links { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.person__links a { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: #fff; font-weight: 600; word-break: break-all; }
.person__links a:hover { color: var(--accent-2); }
.person__links svg { flex: none; width: 18px; height: 18px; fill: none; stroke: var(--accent-2); stroke-width: 2; stroke-linejoin: round; }


/* Footer */
.footer { background: #0a1520; color: #8da0b5; font-size: 14px; padding: 28px 0; }
.footer__inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer strong { color: #fff; }
.footer__meta a { color: #fff; text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 3px; }
.footer__meta a:hover { color: var(--accent-2); }
.nowrap { white-space: nowrap; }

/* Lightbox */
.lightbox {
  width: min(96vw, 1600px); max-height: 94vh; padding: 0; border: 0; border-radius: 12px;
  background: #fff; overflow: auto;
}
.lightbox::backdrop { background: rgb(10 21 32 / .85); }
.lightbox img { width: 100%; }
.lightbox__cap { margin: 0; padding: 12px 18px; font-size: 13px; color: var(--muted); }
.lightbox__close {
  position: sticky; top: 10px; float: right; margin: 10px 10px -50px 0; z-index: 2;
  width: 40px; height: 40px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--ink); color: #fff; font-size: 24px; line-height: 1;
}

/* Reveal */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition: none !important; }
}

/* Responsive */
@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .services { grid-template-columns: 1fr 1fr; }
  .card--wide { grid-row: auto; grid-column: 1 / -1; }
  .card--cta { grid-column: 1 / -1; }
  .steps { grid-template-columns: 1fr 1fr; row-gap: 36px; }
  .team { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .wrap { padding: 0 16px; }
  .section { padding: 72px 0; }
  .hero { padding: 40px 0 64px; }
  .hero__facts { gap: 20px; }
  .nav__toggle {
    display: grid; gap: 6px; width: 40px; height: 40px; place-content: center;
    background: none; border: 0; cursor: pointer;
  }
  .nav__toggle span { display: block; width: 22px; height: 2px; background: var(--ink); transition: transform .2s; }
  .nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav__toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .nav__menu {
    position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px 16px 16px;
    display: none;
  }
  .nav__menu.is-open { display: flex; }
  .nav__menu a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav__menu .btn { margin-top: 14px; justify-content: center; }
  .services, .gallery { grid-template-columns: 1fr; }
  .shot, .shot--lg { grid-column: auto; }
  .shot--lg .zoom { aspect-ratio: 16 / 10; }
  .steps { grid-template-columns: 1fr; }
  .person { flex-direction: column; padding: 22px; }
  .tick { display: none; }
}

/* Work map */
.section--map { background: var(--paper-2); padding-top: 0; }
.mapbox { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.map-filters { display: flex; flex-wrap: wrap; gap: 8px; padding: 16px; border-bottom: 1px solid var(--line); }
.chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 999px;
  border: 1px solid var(--line); background: #fff; color: var(--ink); cursor: pointer;
  font: 600 13px/1 var(--font); transition: opacity .15s, background .15s;
}
.chip i { width: 10px; height: 10px; border-radius: 50%; background: var(--c); box-shadow: 0 0 0 2px #fff, 0 0 0 3px var(--c); }
.chip .mono { font-size: 11px; font-weight: 500; color: var(--muted); }
.chip:hover { background: var(--paper); }
.chip[aria-pressed="false"] { opacity: .45; }
.chip[aria-pressed="false"] i { background: transparent; }
.map { height: 560px; background: var(--paper-2); }
.map .leaflet-tile-pane { filter: grayscale(1) contrast(.92) brightness(1.04); }
.map__error { display: grid; place-items: center; height: 100%; margin: 0; color: var(--muted); }
.leaflet-container { font-family: var(--font); }
.cluster {
  display: grid; place-items: center; border-radius: 50%;
  background: rgb(15 30 46 / .9); color: #fff; font: 700 13px/1 var(--font);
  box-shadow: 0 0 0 4px rgb(217 70 43 / .35);
}
@media (max-width: 720px) {
  .map { height: 440px; }
  .map-filters { padding: 12px; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
  .chip { flex: none; }
}