:root {
  --ink: #edf7f2;
  --muted: #a6bbb2;
  --green: #8ef0b4;
  --green-deep: #276e4b;
  --night: #071311;
  --panel: #0c1e19;
  --line: rgba(174, 225, 200, 0.16);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 8%, rgba(52, 151, 101, 0.2), transparent 28rem),
    var(--night);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: inherit; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 1rem; top: 1rem; z-index: 10; background: white; color: black; padding: .75rem 1rem; }

.site-header, footer {
  width: min(calc(100% - 3rem), var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header { min-height: 88px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: .7rem; align-items: center; font-weight: 720; text-decoration: none; letter-spacing: -.02em; }
.brand-mark { display: block; width: 2rem; height: 2rem; flex: 0 0 2rem; }
nav { display: flex; gap: 1.8rem; align-items: center; }
nav a { color: var(--muted); text-decoration: none; font-size: .9rem; }
nav a:hover, nav a:focus-visible { color: var(--ink); }
.nav-cta { padding: .55rem .85rem; border: 1px solid var(--line); border-radius: 999px; }

.hero, .section, .statement {
  width: min(calc(100% - 3rem), var(--max));
  margin-inline: auto;
}
.hero { min-height: 680px; display: grid; grid-template-columns: 1.25fr .75fr; gap: 5rem; align-items: center; padding: 5rem 0 7rem; }
.eyebrow { margin: 0 0 1.25rem; color: var(--green); text-transform: uppercase; letter-spacing: .15em; font-size: .74rem; font-weight: 760; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 780px; margin-bottom: 1.75rem; font-size: clamp(3rem, 7vw, 6.4rem); line-height: .98; letter-spacing: -.065em; font-weight: 660; }
h1 em { color: var(--green); font-style: normal; font-weight: 480; }
.hero-intro { max-width: 660px; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.25rem); }
.hero-actions { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 2rem; }
.button { display: inline-flex; justify-content: center; padding: .8rem 1.15rem; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; font-weight: 720; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--night); background: var(--green); border-color: var(--green); }
.button-secondary { color: var(--ink); background: rgba(255,255,255,.025); }

.system-card { padding: 1.25rem; border: 1px solid var(--line); border-radius: 1.25rem; background: rgba(12,30,25,.82); box-shadow: 0 30px 100px rgba(0,0,0,.25); }
.system-status { padding: .4rem .45rem 1rem; color: var(--muted); font-size: .78rem; border-bottom: 1px solid var(--line); }
.system-status span { display: inline-block; width: .55rem; height: .55rem; margin-right: .5rem; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 .3rem rgba(142,240,180,.1); }
.system-card ol { margin: 0; padding: 0; list-style: none; }
.system-card li { display: grid; grid-template-columns: 3rem 1fr; gap: .8rem; padding: 1.25rem .45rem; border-bottom: 1px solid var(--line); }
.system-card li:last-child { border-bottom: 0; }
.system-card strong { color: var(--green); font: 500 .75rem ui-monospace, monospace; }
.system-card b { display: block; margin-bottom: .2rem; font-size: 1rem; }
.system-card li span { color: var(--muted); font-size: .9rem; }

.statement { padding: 2rem 0 7rem; border-top: 1px solid var(--line); }
.statement p { max-width: 960px; margin: 3rem 0 0 auto; font-size: clamp(2rem, 4.4vw, 4.5rem); line-height: 1.1; letter-spacing: -.045em; }
.section { padding: 7rem 0; border-top: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: .7fr 1.3fr; gap: 3rem; margin-bottom: 4rem; }
h2 { font-size: clamp(2.25rem, 5vw, 4.7rem); line-height: 1.03; letter-spacing: -.055em; font-weight: 620; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.service-grid article { min-height: 310px; padding: 2rem; background: var(--night); }
.service-number { color: var(--green); font: 500 .75rem ui-monospace, monospace; }
.service-grid h3 { margin: 5rem 0 1rem; font-size: 1.45rem; }
.service-grid p, .approach-copy, .lab-grid p, .contact > p { color: var(--muted); }

.approach-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 6rem; padding: clamp(2rem, 6vw, 5rem); background: var(--panel); border-radius: 1.5rem; }
.approach-copy { align-self: end; font-size: 1.05rem; }
.approach-copy ul { margin: 2rem 0 0; padding: 0; list-style: none; }
.approach-copy li { padding: .9rem 0; border-top: 1px solid var(--line); color: var(--ink); }
.approach-copy li::before { content: "↗"; margin-right: .8rem; color: var(--green); }
.lab-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6rem; align-items: end; }
.lab-grid p { font-size: 1.15rem; }
.contact { text-align: center; padding-block: 9rem; }
.contact h2 { max-width: 850px; margin-inline: auto; }
.contact > p { max-width: 620px; margin: 0 auto 2rem; }
.contact small { display: block; margin-top: 1rem; color: #789087; }
footer { min-height: 140px; gap: 2rem; color: var(--muted); border-top: 1px solid var(--line); font-size: .85rem; }
footer p { margin: 0; }

@media (max-width: 820px) {
  nav > a:not(.nav-cta) { display: none; }
  .hero { grid-template-columns: 1fr; gap: 3rem; padding-top: 4rem; }
  .section-heading, .approach-panel, .lab-grid { grid-template-columns: 1fr; gap: 2rem; }
  .service-grid { grid-template-columns: 1fr; }
  .service-grid article { min-height: auto; }
  .service-grid h3 { margin-top: 2.5rem; }
  footer { flex-direction: column; align-items: flex-start; justify-content: center; padding: 2rem 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}