/* Express Line Engineering — design tokens and layout. Spec §7, §8. */
:root{
  --red:#EA0B0B;--red-text:#C40D0D;--ink:#14181B;--body:#43505C;--muted-on-dark:#9AA6B0;
  --paper:#F6F7F8;--line:#DDE1E5;--white:#FFFFFF;
  --font-head:"Barlow Condensed","Arial Narrow",Arial,sans-serif;
  --font-body:Barlow,"Segoe UI",Arial,sans-serif;
  --fs-0:1rem;--fs-1:1.25rem;--fs-2:1.5625rem;--fs-3:1.953rem;--fs-4:2.441rem;--fs-5:3.052rem;
  --space-1:.5rem;--space-2:1rem;--space-3:1.5rem;--space-4:2.5rem;--space-5:4rem;--space-6:6rem;
  --max:72rem;--radius:6px;--dur:350ms;--ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{font-size:17px;-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (min-width:48rem){html{font-size:18px}}
body{margin:0;font-family:var(--font-body);line-height:1.55;color:var(--body);background:var(--white)}
h1,h2,h3,h4{font-family:var(--font-head);color:var(--ink);line-height:1.1;margin:0 0 var(--space-2);letter-spacing:.005em;text-wrap:balance}
h1{font-size:var(--fs-4);font-weight:700}
h2{font-size:var(--fs-3);font-weight:700}
h3{font-size:var(--fs-2);font-weight:600}
h4{font-size:var(--fs-1)}
@media (min-width:48rem){h1{font-size:var(--fs-5)}}
p,ul,ol{margin:0 0 var(--space-2)}
a{color:var(--red-text);text-underline-offset:.15em}
a:hover{color:var(--ink)}
img,svg{max-width:100%;height:auto;display:block}
strong{color:var(--ink)}
.container{width:min(100% - 2*var(--space-2),var(--max));margin-inline:auto}
@media (min-width:48rem){.container{width:min(100% - 2*var(--space-4),var(--max))}}
.section{padding-block:var(--space-4)}
@media (min-width:48rem){.section{padding-block:var(--space-5)}}
.band{padding-block:var(--space-4)}
.band--paper{background:var(--paper)}
.band--dark{background:var(--ink);color:var(--muted-on-dark)}
.band--dark h2,.band--dark h3,.band--dark strong{color:var(--white)}
.band--dark a{color:var(--white)}
.eyebrow{font-family:var(--font-head);font-weight:600;text-transform:uppercase;letter-spacing:.12em;font-size:.85rem;color:var(--red-text);margin:0 0 var(--space-1)}
.lede{font-size:var(--fs-1);color:var(--ink);max-width:42ch}
.prose{max-width:68ch}
.prose h2{margin-top:var(--space-4)}
.grid-2,.grid-3{display:grid;gap:var(--space-3)}
@media (min-width:40rem){.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (min-width:64rem){.grid-3{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;position:relative;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.card:hover,.card:focus-within{transform:translateY(-4px);box-shadow:0 14px 28px rgba(20,24,27,.14)}
.card__body{padding:var(--space-3)}
.card h3{margin-bottom:var(--space-1)}
/* Card photo: a fixed-height stage, the photo whole inside it at its own
   shape. Every card in a row shows its photo at the same height, so the row
   lines up whatever mix of portrait and landscape it holds. object-fit:contain
   only matters for a very wide photo that hits the card's edge; it never crops. */
.card__media{height:13rem;background:var(--ink);display:flex;align-items:center;justify-content:center;overflow:hidden}
@media (min-width:64rem){.card__media{height:14rem}}
.card__media picture{display:contents}
.card__media img{height:100%;width:auto;max-width:100%;object-fit:contain}
.card__meta{font-family:var(--font-head);font-weight:600;text-transform:uppercase;letter-spacing:.06em;font-size:.78rem;color:var(--body);margin:0 0 .25rem}
.card__kicker{font-size:var(--fs-1);margin:0 0 .35rem}
.card a.card__link{color:inherit;text-decoration:none}
.card a.card__link::after{content:"";position:absolute;inset:0}
@supports selector(:has(a)){
  .card a.card__link:focus-visible{outline:none}
  .card:has(a.card__link:focus-visible){outline:3px solid var(--red);outline-offset:2px}
}

/* Buttons — min 44px tall, 8px apart */
.btn{display:inline-flex;align-items:center;gap:.5rem;min-height:44px;padding:.65rem 1.25rem;border-radius:var(--radius);font-family:var(--font-head);font-weight:600;font-size:var(--fs-1);text-decoration:none;border:2px solid transparent;cursor:pointer;transition:background var(--dur) var(--ease),color var(--dur) var(--ease)}
.btn--primary{background:var(--red);color:var(--white)}
.btn--primary:hover{background:var(--red-text);color:var(--white)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--white)}
.band--dark .btn--ghost,.hero .btn--ghost{color:var(--white);border-color:var(--white)}
.band--dark .btn--ghost:hover,.hero .btn--ghost:hover{background:var(--white);color:var(--ink)}
.btn-row{display:flex;flex-wrap:wrap;gap:var(--space-1)}

/* Hero — split: text on the dark panel, the photograph whole beside it.
   A full-bleed photo is always cropped by the screen's shape; this is the one
   layout that shows the picture entire at every size. */
.hero{background:var(--ink);color:var(--white)}
.hero__grid{display:grid;gap:var(--space-4);padding-block:var(--space-4)}
@media (min-width:60rem){.hero__grid{grid-template-columns:1.05fr .95fr;align-items:center;gap:var(--space-5);padding-block:var(--space-5);min-height:min(78vh,42rem)}}
.hero .eyebrow,.hero .lede,.hero h1{color:var(--white)}
.hero__title{text-transform:uppercase;font-weight:700;letter-spacing:-.005em;line-height:.98;max-width:19ch;font-size:clamp(2.1rem,5vw,3.9rem);margin-bottom:var(--space-2)}
.hero .lede{max-width:46ch;font-size:var(--fs-1)}
.hero__photo{margin:0;justify-self:center;width:min(100%,30rem)}
@media (min-width:60rem){.hero__photo{justify-self:end}}
.hero__photo img{width:100%;height:auto;border-radius:var(--radius);display:block}

/* Stats band */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-3);padding-block:var(--space-4)}
@media (min-width:48rem){.stats{grid-template-columns:repeat(4,1fr)}}
.stat__n{display:block;font-family:var(--font-head);font-weight:700;font-size:var(--fs-4);color:var(--red-text);line-height:1}
.stat__l{display:block;font-family:var(--font-head);font-weight:600;font-size:var(--fs-1);color:var(--ink)}

/* Header */
.site-header{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.site-header__inner{display:flex;align-items:center;gap:var(--space-2);min-height:64px}
.brand{display:inline-flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--ink);font-family:var(--font-head);font-weight:700;font-size:var(--fs-1);margin-right:auto;min-height:44px}
.brand__mark{width:40px;height:40px}
.brand__sub{font-weight:600;color:var(--body)}
.header-phone{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;min-width:44px;min-height:44px;padding:0 .5rem;text-decoration:none;color:var(--ink);font-family:var(--font-head);font-weight:600}
.header-phone span{display:none}
@media (min-width:48rem){.header-phone span{display:inline}}
.site-nav__list{list-style:none;margin:0;padding:0;display:flex;gap:.5rem}
.site-nav__item{position:relative}
.site-nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 .75rem;text-decoration:none;color:var(--ink);font-family:var(--font-head);font-weight:600;font-size:var(--fs-1)}
.site-nav a[aria-current="page"]{box-shadow:inset 0 -3px 0 var(--red)}
.site-nav__sub{list-style:none;margin:0;padding:.5rem 0;position:absolute;left:0;top:100%;min-width:16rem;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 30px rgba(20,24,27,.12);display:none}
.site-nav__item:hover .site-nav__sub,.site-nav__item:focus-within .site-nav__sub{display:block}
.site-nav__sub a{display:flex;width:100%;font-weight:400}
.nav-toggle{min-width:44px;min-height:44px;background:none;border:2px solid var(--ink);border-radius:var(--radius);cursor:pointer;place-items:center}
.nav-toggle__bar{width:22px;height:2px;background:var(--ink);box-shadow:0 -7px 0 var(--ink),0 7px 0 var(--ink)}
@media (max-width:63.99rem){
  .js .nav-toggle{display:grid}
  .js .site-nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--white);border-bottom:1px solid var(--line);padding:var(--space-2)}
  .js .site-nav.is-open{display:block}
  .site-nav__list{flex-direction:column;gap:0}
  .site-nav a{width:100%;min-height:48px}
  .site-nav__sub{position:static;display:block;border:0;box-shadow:none;padding:0 0 .5rem 1rem}
}
@media (min-width:64rem){.nav-toggle{display:none!important}}

/* Footer */
.site-footer{background:var(--ink);color:var(--muted-on-dark);padding-block:var(--space-5) var(--space-3);margin-top:var(--space-6)}
.site-footer a{color:var(--white)}
.site-footer__grid{display:grid;gap:var(--space-3)}
@media (min-width:48rem){.site-footer__grid{grid-template-columns:2fr 1fr 1fr}}
.site-footer__name{font-family:var(--font-head);font-weight:700;color:var(--white);font-size:var(--fs-1)}
.site-footer__links{list-style:none;margin:0;padding:0;display:grid;gap:.25rem}
.site-footer__links a,.site-footer__contact a{display:inline-block;min-height:44px;line-height:44px}
.site-footer__legal{border-top:1px solid rgba(154,166,176,.25);margin-top:var(--space-3);padding-top:var(--space-2);font-size:.9rem}

/* Accessibility */
.skip-link{position:absolute;left:-999px;top:0;background:var(--red);color:var(--white);padding:.75rem 1rem;z-index:100;font-family:var(--font-head);font-weight:600}
.skip-link:focus{left:0}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:3px solid var(--red);outline-offset:3px}
.band--dark :focus-visible{outline-color:var(--white)}

/* Motion (§7.4): fade-up on entry; off under reduced motion */
.reveal{opacity:0;transform:translateY(12px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);transition-delay:calc(var(--i,0)*70ms)}
.reveal.is-visible,html:not(.js) .reveal{opacity:1;transform:none}
/* Failsafe: if the in-view signal never arrives (an odd browser, a background
   tab restored later), everything still becomes visible after 1.5 s. */
@keyframes reveal-failsafe{to{opacity:1;transform:none}}
.js .reveal{animation:reveal-failsafe 1ms 1500ms forwards}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}

/* ─── Variant B: bold industrial ────────────────────────────────────────── */

/* Numbers slab — full-width red */
.band--red{background:var(--red);color:var(--white)}
.slab__list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-3)}
@media (min-width:56rem){.slab__list{grid-template-columns:repeat(4,1fr)}}
.slab__item{display:flex;flex-direction:column;gap:.15rem}
.slab__n{font-family:var(--font-head);font-weight:700;color:var(--white);line-height:.9;
  font-size:clamp(2.8rem,7vw,4.6rem)}
.slab__l{font-family:var(--font-head);font-weight:600;color:var(--white);font-size:var(--fs-0);
  text-transform:uppercase;letter-spacing:.06em;line-height:1.25;max-width:18ch}

/* Client strip — names scroll slowly across a dark band (spec §9 pattern).
   Two identical tracks; the loop moves one track-width, so it never jumps.
   Speed is a distance, not a time: JS sets --marquee-duration from the track's
   measured width so it moves at ~30px/s on every screen (the CSS default covers
   no-JS). Pauses on hover and while off-screen; a plain wrapped list under
   reduced motion or without JavaScript. No pause button, by the client's
   instruction (2026-09-05). */
.clients{background:var(--paper);padding-block:var(--space-3);overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.clients__label{font-family:var(--font-head);font-weight:600;text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;color:var(--body);margin:0 0 var(--space-2)}
.marquee{display:flex;gap:3rem;--marquee-duration:190s}
.marquee__track{list-style:none;margin:0;padding:0;display:flex;gap:3rem;flex:none;min-width:100%;justify-content:space-around;animation:marquee var(--marquee-duration) linear infinite;will-change:transform}
.marquee__item{display:flex;align-items:center;min-height:44px;font-family:var(--font-head);font-weight:600;text-transform:uppercase;letter-spacing:.05em;font-size:var(--fs-0);color:var(--body);white-space:nowrap}
.marquee__logo{height:40px;width:auto;display:block;opacity:.9}
.marquee:hover .marquee__track,.marquee:focus-within .marquee__track,.marquee.is-offscreen .marquee__track{animation-play-state:paused}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(calc(-100% - 3rem))}}
/* Static, wrapped list when motion is off or there is no JS to offer a pause button */
@media (prefers-reduced-motion:reduce){
  .marquee__track{animation:none;flex-wrap:wrap;justify-content:flex-start;gap:.5rem 1.5rem;min-width:0}
  .marquee__track[aria-hidden]{display:none}
}
html:not(.js) .marquee__track{animation:none;flex-wrap:wrap;justify-content:flex-start;gap:.5rem 1.5rem;min-width:0}
html:not(.js) .marquee__track[aria-hidden]{display:none}

/* Service strip — five photos at their own shapes, one shared height, nothing cropped.
   Each tile carries --r (its photo's width/height). On wide screens the tiles form
   a justified row: flex-grow proportional to --r gives each a width in proportion
   to its shape, and aspect-ratio:var(--r) then makes every height identical. */
.svc-strip{display:grid;gap:var(--space-3);margin-top:var(--space-3)}
@media (min-width:40rem){.svc-strip{grid-template-columns:1fr 1fr}}
@media (min-width:64rem){
  .svc-strip{display:flex;gap:var(--space-2);align-items:flex-start}
  .svc-tile{flex:var(--r,1) 1 0;min-width:0}
}
.svc-tile{position:relative;display:flex;flex-direction:column;gap:var(--space-1)}
.svc-tile__media{aspect-ratio:var(--r,4/3);background:var(--ink);border-radius:var(--radius);overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.svc-tile__media img{width:100%;height:auto;display:block}
.svc-tile:hover .svc-tile__media,.svc-tile:focus-within .svc-tile__media{transform:translateY(-4px);box-shadow:0 14px 28px rgba(20,24,27,.18)}
.svc-tile__cap{padding-top:var(--space-1)}
.svc-tile__n{font-family:var(--font-head);font-weight:700;font-size:var(--fs-2);color:var(--red-text);line-height:1;margin:0 0 .2rem}
.svc-tile__title{text-transform:uppercase;line-height:1.05;font-size:var(--fs-1);margin:0 0 .3rem}
.svc-tile__link{color:var(--ink);text-decoration:none}
.svc-tile__link::after{content:"";position:absolute;inset:0}
.svc-tile:hover .svc-tile__link{color:var(--red-text)}
.svc-tile:has(.svc-tile__link:focus-visible){outline:3px solid var(--red);outline-offset:4px;border-radius:var(--radius)}
.svc-tile__text{font-size:.9rem;margin:0}

/* Safety proof block */
.proof__grid{display:grid;gap:var(--space-4)}
@media (min-width:60rem){.proof__grid{grid-template-columns:1fr 1fr;align-items:center}}
.proof__title{text-transform:uppercase;line-height:1;font-size:clamp(1.9rem,4vw,3rem);color:var(--white)}
.proof__cert{margin:0}
.proof__cert img{width:100%;border-radius:var(--radius)}
.proof__cert figcaption{font-size:.9rem;color:var(--muted-on-dark);margin-top:var(--space-1)}

/* Hero entrance — the text settles in on load. CSS-only; the reduced-motion
   block above collapses it to an instant. */
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.hero__inner>*{animation:rise 500ms var(--ease) both}
.hero__inner>:nth-child(2){animation-delay:90ms}
.hero__inner>:nth-child(3){animation-delay:180ms}
.hero__inner>:nth-child(4){animation-delay:270ms}

/* ─── Part 2: inner pages ───────────────────────────────────────────────── */

/* Hero variants: text-only, and compact for inner pages */
.hero--text .hero__grid{grid-template-columns:1fr}
.hero--compact .hero__grid{min-height:0;padding-block:var(--space-4)}
@media (min-width:60rem){.hero--compact .hero__grid{min-height:0;padding-block:var(--space-5)}}
.hero--compact .hero__title{font-size:clamp(1.9rem,4vw,3.2rem)}
.hero__meta{font-family:var(--font-head);font-weight:600;text-transform:uppercase;letter-spacing:.06em;font-size:.9rem;color:var(--muted-on-dark);margin:0 0 var(--space-2)}
.hero__caption{font-size:.85rem;color:var(--muted-on-dark);margin-top:.5rem}

/* Photo gallery — columns; every photo whole at its own shape */
.photo-grid{columns:1;column-gap:var(--space-2)}
@media (min-width:40rem){.photo-grid{columns:2}}
@media (min-width:64rem){.photo-grid{columns:3}}
.photo{margin:0 0 var(--space-2);break-inside:avoid}
.photo img{width:100%;height:auto;border-radius:var(--radius);display:block}
.photo figcaption{font-size:.9rem;color:var(--body);margin-top:.4rem}

/* Service page lists */
.examples,.related{list-style:none;padding:0;margin:0 0 var(--space-3);display:grid;gap:var(--space-2)}
.contact__ways{list-style:none;padding:0;margin:0 0 var(--space-3);display:grid;gap:var(--space-1);justify-items:start}

/* Track record timeline */
.tl{list-style:none;padding:0;margin:0;border-left:3px solid var(--line)}
.tl__item{display:grid;grid-template-columns:8.5rem 1fr;gap:var(--space-2);padding:var(--space-2) 0 var(--space-2) var(--space-2);position:relative}
.tl__item::before{content:"";position:absolute;left:-.55rem;top:1.45rem;width:.75rem;height:.75rem;border-radius:50%;background:var(--red)}
.tl__period{font-family:var(--font-head);font-weight:600;color:var(--ink)}
.tl__item h3{font-size:var(--fs-1);margin-bottom:.15rem}
.tl__where{margin-bottom:.25rem}
.tl__note{font-size:.85rem;color:var(--body);font-style:italic;margin:0}
.badge{display:inline-block;font-family:var(--font-head);font-weight:600;font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;background:var(--red);color:var(--white);padding:.1rem .45rem;border-radius:3px;margin-left:.35rem}
@media (max-width:39.99rem){.tl__item{grid-template-columns:1fr}}
.tl-filter fieldset{border:0;padding:0;margin:0 0 var(--space-3);display:flex;flex-wrap:wrap;gap:var(--space-1)}
.tl-filter label{display:inline-flex;align-items:center;min-height:44px;padding:0 .9rem;border:2px solid var(--line);border-radius:999px;font-family:var(--font-head);font-weight:600;cursor:pointer;position:relative}
.tl-filter label:has(input:checked){border-color:var(--ink);background:var(--ink);color:var(--white)}
.tl-filter input{position:absolute;opacity:0;width:0;height:0}
.tl-filter label:has(input:focus-visible){outline:3px solid var(--red);outline-offset:3px}
/* CSS-only filter: hide rows that do not match the checked chip */
section:has(.tl-filter input[value="Ghana"]:checked) .tl__item:not([data-country="Ghana"]),
section:has(.tl-filter input[value="Mali"]:checked) .tl__item:not([data-country="Mali"]),
section:has(.tl-filter input[value="Guinea"]:checked) .tl__item:not([data-country="Guinea"]),
section:has(.tl-filter input[value="DR Congo"]:checked) .tl__item:not([data-country="DR Congo"]),
section:has(.tl-filter input[value="ongoing"]:checked) .tl__item:not([data-ongoing="1"]){display:none}

/* Contact form */
.form{display:grid;gap:var(--space-2);align-content:start}
.field{display:grid;gap:.3rem}
.field label{font-family:var(--font-head);font-weight:600;color:var(--ink)}
.field input,.field textarea{font:inherit;padding:.7rem .8rem;min-height:44px;border:2px solid var(--line);border-radius:var(--radius);color:var(--ink);background:var(--white);width:100%}
.field input:focus-visible,.field textarea:focus-visible{border-color:var(--ink);outline-offset:0}
.field .hint{font-size:.9rem;margin:0}
.field .error{color:var(--red-text);font-weight:600;margin:0}
.field.is-invalid input,.field.is-invalid textarea{border-color:var(--red-text)}
.form__status{padding:var(--space-2);border-radius:var(--radius);background:var(--paper);border-left:4px solid var(--red);margin:0}