:root {
  --color-bg: #fff;
  --color-ink: #0d181c;
  --color-text: #3d4649;
  --color-muted: #6e7477;
  --color-border: #dfe0e5;
  --color-surface: #eeeff2;
  --color-surface-2: #f9f9fb;
  --color-navy: #27455c;
  --color-accent: #1d4fc4; /* BAS brand blue, from the logo */
  --color-brand-dark: #0b1b4d;
  --font-sans: "Inter", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "Space Mono", ui-monospace, Consolas, monospace;
  --radius-sm: 2px;
  --max: 1280px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font: 400 16px/1.55 var(--font-sans); color: var(--color-text); background: var(--color-bg); -webkit-font-smoothing: antialiased; }
img, svg { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { color: var(--color-ink); font-weight: 400; margin: 0 0 .5em; line-height: 1.15; }
h1 { font-size: clamp(36px, 5.4vw, 64px); line-height: 1.05; letter-spacing: -.01em; }
h2 { font-size: clamp(28px, 3.6vw, 48px); line-height: 1.1; }
h3 { font-size: 24px; }
p { margin: 0 0 1em; }
:focus-visible { outline: 2px solid var(--color-navy); outline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--color-ink); color: #fff; padding: 10px 16px; z-index: 100; }
.skip:focus { left: 0; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
@media (min-width: 768px) { .wrap { padding: 0 32px; } }
section { padding: 48px 0; }
@media (min-width: 768px) { section { padding: 64px 0; } }
@media (min-width: 1024px) { section { padding: 96px 0; } }
.alt { background: var(--color-surface-2); border-block: 1px solid var(--color-border); }
.dark { background: var(--color-ink); color: #c7ced1; }
.dark h2, .dark h3 { color: #fff; }
.eyebrow { font: 500 13px/1 var(--font-mono); letter-spacing: .04em; text-transform: uppercase; color: var(--color-muted); margin-bottom: 20px; display: block; }
.lead { font-size: 19px; max-width: 62ch; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 13px 24px; font: 500 14px/1.2 var(--font-mono); letter-spacing: .02em; text-transform: uppercase; text-decoration: none; border: 1px solid var(--color-ink); border-radius: var(--radius-sm); background: var(--color-ink); color: #fff; cursor: pointer; transition: background .25s, color .25s; }
.btn:hover { background: #fff; color: var(--color-ink); }
.btn.secondary { background: #fff; color: var(--color-ink); }
.btn.secondary:hover { background: var(--color-ink); color: #fff; }
.dark .btn { background: #fff; color: var(--color-ink); border-color: #fff; }
.dark .btn:hover { background: transparent; color: #fff; }
.link { display: inline-flex; gap: 8px; padding: 14px 0; font: 500 14px/1 var(--font-mono); letter-spacing: .04em; text-transform: uppercase; text-decoration: none; color: var(--color-ink); border-bottom: 1px solid transparent; }
.link::after { content: "\2192"; transition: transform .25s; }
.link:hover::after { transform: translateX(4px); }
.link:hover { border-color: var(--color-ink); }

/* header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--color-border); }
.site-header > .wrap { display: flex; align-items: center; justify-content: space-between; height: 80px; gap: 12px; }
.brand img { height: 36px; width: auto; }
.nav { display: none; align-items: center; gap: 4px; }
.nav > ul { display: flex; list-style: none; margin: 0; padding: 0; gap: 4px; }
.nav a, .nav button.nav-top { font: 400 15px/1 var(--font-sans); color: var(--color-ink); text-decoration: none; padding: 26px 9px; display: block; background: none; border: 0; cursor: pointer; }
.nav a:hover, .nav button.nav-top:hover { color: var(--color-accent); }
.nav-item { position: static; }
.mega { position: absolute; z-index: 60; box-shadow: 0 12px 24px rgba(13,24,28,.08); left: 0; right: 0; top: 100%; background: #fff; border-bottom: 1px solid var(--color-border); display: none; padding: 40px 0; }
.nav-item.open > .mega, .nav-item:hover > .mega, .nav-item:focus-within > .mega { display: block; }
.mega .cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.mega h4 { font: 500 13px/1 var(--font-mono); letter-spacing: .04em; text-transform: uppercase; color: var(--color-muted); margin-bottom: 14px; }
.mega a { padding: 7px 0; font-size: 15px; }
.header-cta { display: none; }
.menu-btn { background: none; border: 1px solid var(--color-border); border-radius: var(--radius-sm); width: 44px; height: 44px; font-size: 20px; cursor: pointer; color: var(--color-ink); }
@media (min-width: 1024px) {
  .nav, .header-cta { display: flex; }
  .menu-btn { display: none; }
  .mega { left: 0; right: 0; }
}
.mobile-nav { display: none; position: fixed; inset: 80px 0 0 0; background: #fff; overflow: auto; padding: 16px; z-index: 49; }
.mobile-nav.open { display: block; }
.mobile-nav details { border-bottom: 1px solid var(--color-border); }
.mobile-nav summary, .mobile-nav > a { display: block; padding: 18px 0; font-size: 20px; color: var(--color-ink); text-decoration: none; cursor: pointer; border-bottom: 1px solid var(--color-border); }
.mobile-nav details a { display: block; padding: 10px 0 10px 16px; text-decoration: none; }
.mobile-nav h4 { margin: 16px 0 4px 16px; font: 500 12px var(--font-mono); text-transform: uppercase; color: var(--color-muted); }
@media (min-width: 1024px) { .mobile-nav { display: none !important; } }

/* hero */
.hero { padding: 0; }
.slider { position: relative; background: var(--color-brand-dark); color: #fff; overflow: hidden; }
.slide { display: none; min-height: 560px; padding: 72px 0; background: linear-gradient(120deg, var(--s1), var(--s2)); }
.slide.active { display: block; animation: fade .5s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.slide .wrap { display: grid; gap: 32px; align-items: end; min-height: 416px; }
.slide .client { font: 500 13px var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: #9fb4ff; }
.slide h1 { color: #fff; max-width: 16ch; margin-top: 16px; }
.slide p { max-width: 46ch; color: #d4dbe3; font-size: 18px; }
.slide .btn { background: #fff; color: var(--color-ink); border-color: #fff; }
.slide .btn:hover { background: transparent; color: #fff; }
.slide .big { font-size: clamp(96px, 20vw, 240px); line-height: .8; letter-spacing: -.04em; color: rgba(255,255,255,.08); font-weight: 600; user-select: none; }
@media (min-width: 900px) { .slide .wrap { grid-template-columns: 1.2fr 1fr; } .slide .big { text-align: right; } }
.slider-ctl { position: absolute; left: 0; right: 0; bottom: 24px; }
.slider-ctl .wrap { display: flex; align-items: center; gap: 12px; }
.dot { width: 36px; height: 3px; border: 0; background: rgba(255,255,255,.3); cursor: pointer; padding: 0; }
.dot[aria-current="true"] { background: #fff; }
.arrow { background: none; border: 1px solid rgba(255,255,255,.4); color: #fff; width: 40px; height: 40px; cursor: pointer; border-radius: var(--radius-sm); margin-left: auto; }
.arrow + .arrow { margin-left: 0; }

/* cards & grids */
.grid { display: grid; gap: 24px; }
.g2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.g3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.g4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.card { display: block; border: 1px solid var(--color-border); border-radius: 4px; padding: 28px; background: #fff; text-decoration: none; transition: border-color .25s, transform .25s; position: relative; }
.alt .card { background: #fff; }
a.card:hover { border-color: var(--color-ink); transform: translateY(-2px); }
a.card::after { content: "\2192"; position: absolute; right: 24px; bottom: 22px; color: var(--color-ink); opacity: 0; transition: opacity .25s; }
a.card:hover::after { opacity: 1; }
.card h3 { font-size: 22px; }
.card p { margin: 0; color: var(--color-muted); font-size: 15px; }
.card .num { font: 500 13px var(--font-mono); color: var(--color-accent); display: block; margin-bottom: 36px; }
.section-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 16px; margin-bottom: 40px; }
.section-head h2 { margin: 0; max-width: 20ch; }
.thumb { aspect-ratio: 16/10; border-radius: 2px; margin: -28px -28px 24px; background: linear-gradient(135deg, var(--a), var(--b)); display: flex; align-items: end; padding: 16px; color: #fff; font: 500 13px var(--font-mono); text-transform: uppercase; letter-spacing: .05em; }
.split { display: grid; gap: 40px; }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1.4fr; } }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 24px; }
.stat b { display: block; font-size: 44px; font-weight: 400; color: var(--color-ink); }
.checks { list-style: none; padding: 0; margin: 0; }
.checks li { padding: 14px 0 14px 28px; border-top: 1px solid var(--color-border); position: relative; }
.checks li::before { content: ""; position: absolute; left: 0; top: 24px; width: 12px; height: 2px; background: var(--color-accent); }
.partners { display: flex; flex-wrap: wrap; gap: 16px 48px; align-items: center; }
.partners span { font: 500 22px var(--font-sans); color: var(--color-muted); letter-spacing: .02em; }
blockquote { margin: 0; font-size: clamp(20px, 2.4vw, 28px); line-height: 1.4; color: var(--color-ink); max-width: 36ch; }
blockquote footer { font: 400 14px var(--font-sans); color: var(--color-muted); margin-top: 20px; }
.cta { text-align: left; }
.cta h2 { max-width: 20ch; color: #fff; }
.page-hero { padding: 72px 0 56px; border-bottom: 1px solid var(--color-border); }
.page-hero h1 { max-width: 20ch; }
.crumbs { font: 400 13px var(--font-mono); color: var(--color-muted); margin-bottom: 24px; }
.crumbs a { text-decoration: none; }
.prose { max-width: 70ch; }
.prose h2 { margin-top: 1.6em; }
.draft { border: 1px dashed var(--color-muted); padding: 12px 16px; font-size: 13px; color: var(--color-muted); margin-top: 32px; }

/* forms */
form .row { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin-bottom: 16px; }
label { display: block; font: 500 13px var(--font-sans); color: var(--color-ink); margin-bottom: 6px; }
input, select, textarea { width: 100%; font: 400 16px var(--font-sans); padding: 12px 14px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: #fff; color: var(--color-ink); }
input:focus, select:focus, textarea:focus { border-color: var(--color-navy); outline: 2px solid var(--color-navy); outline-offset: 0; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; }
.check input { width: auto; margin-top: 5px; }
.form-msg { margin-top: 16px; padding: 14px; border: 1px solid var(--color-border); display: none; }
.form-msg.show { display: block; }

/* footer */
.site-footer { background: var(--color-ink); color: #aeb6ba; padding: 72px 0 32px; font-size: 15px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: #fff; }
.foot-grid { display: grid; gap: 40px; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.foot-grid h4 { font: 500 13px var(--font-mono); letter-spacing: .04em; text-transform: uppercase; color: #fff; margin-bottom: 16px; }
.foot-grid ul { list-style: none; margin: 0; padding: 0; }
.foot-grid li { padding: 5px 0; }
.foot-brand img { height: 44px; width: auto; margin-bottom: 20px; }
.badges { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0; }
.badges span { border: 1px solid #44505a; padding: 8px 14px; font: 500 12px var(--font-mono); letter-spacing: .05em; color: #fff; }
.social { display: flex; gap: 16px; flex-wrap: wrap; }
.legal { border-top: 1px solid #2c3a41; margin-top: 48px; padding-top: 24px; font-size: 13px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }

/* cookie */
.cookie { position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 90; background: #fff; border: 1px solid var(--color-ink); padding: 20px; display: none; gap: 16px; flex-wrap: wrap; align-items: center; justify-content: space-between; max-width: 960px; margin: 0 auto; box-shadow: 0 8px 30px rgba(13,24,28,.15); }
.cookie.show { display: flex; }
.cookie p { margin: 0; flex: 1 1 320px; font-size: 14px; }
.cookie .acts { display: flex; gap: 12px; flex-wrap: wrap; }

@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }

.tools { display: flex; align-items: center; gap: 14px; font: 400 14px var(--font-mono); color: var(--color-ink); }
.tools .lang b { font-weight: 500; } .tools .lang span { color: var(--color-muted); }
.tools button { background: none; border: 0; cursor: pointer; padding: 8px; color: var(--color-ink); font-size: 18px; }
.header-cta { padding: 17px 20px; }
.slide h1 { max-width: 14ch; }
.upper { text-transform: uppercase; font-family: var(--font-mono); font-size: 16px; letter-spacing: .03em; }

.nav { min-width: 0; } .header-cta { flex-shrink: 0; white-space: nowrap; }
.foot-grid li { overflow-wrap: anywhere; }

/* search */
.search[hidden] { display: none; }
.search { position: fixed; inset: 0; z-index: 95; background: rgba(13,24,28,.55); display: flex; justify-content: center; align-items: flex-start; padding: 12vh 16px 16px; }
.search-box { background: #fff; width: 100%; max-width: 720px; max-height: 76vh; display: flex; flex-direction: column; border-radius: 4px; overflow: hidden; }
.search-bar { display: flex; border-bottom: 1px solid var(--color-border); }
.search-bar input { border: 0; font-size: 20px; padding: 20px 24px; outline: none; flex: 1; }
.search-close { background: none; border: 0; font-size: 28px; padding: 0 22px; cursor: pointer; color: var(--color-ink); }
.search-results { list-style: none; margin: 0; padding: 0; overflow: auto; }
.search-results li a { display: block; padding: 14px 24px; text-decoration: none; border-bottom: 1px solid var(--color-border); }
.search-results li a:hover, .search-results li a:focus { background: var(--color-surface-2); }
.search-results b { display: block; color: var(--color-ink); font-weight: 500; }
.search-results span { font-size: 14px; color: var(--color-muted); }
.search-results .none { padding: 20px 24px; color: var(--color-muted); }