/* ============================================================
   altGreen Research llc — "Lab Console" design system
   Deep bio-black background, phosphor green accent,
   mono specimen labels + grotesk display type
   ============================================================ */

:root {
  --bg: #060d0a;
  --bg2: #091410;
  --cell: #0c1b13;
  --cell-hi: #10241a;
  --edge: #1c3a2a;
  --edge-soft: #14281e;
  --grn: #4ee39a;
  --grn-hi: #8ff5c0;
  --grn-deep: #2a8f5e;
  --teal: #57d4c0;
  --txt: #eaf7ef;
  --sub: #b7cec1;
  --dim: #72907f;
  --mono: "IBM Plex Mono", "Consolas", monospace;
  --disp: "Space Grotesk", "Segoe UI", sans-serif;
  --body-f: "Inter", "Segoe UI", Arial, sans-serif;
  --head-h: 72px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--sub);
  font-family: var(--body-f);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--grn); color: var(--bg); }

a { color: var(--grn); text-decoration: none; }
a:hover { color: var(--grn-hi); }

h1, h2, h3, h4 {
  font-family: var(--disp);
  color: var(--txt);
  font-weight: 600;
  line-height: 1.12;
}

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 40px; }

.mono-tag {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--grn);
}

/* ---------------- Header ---------------- */

.site-head {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--head-h);
  z-index: 300;
  background: var(--bg2);
  border-bottom: 1px solid var(--edge-soft);
  display: flex;
  align-items: stretch;
}

.site-head .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-cell {
  width: 40px;
  height: 40px;
  border: 1px solid var(--grn);
  display: grid;
  place-items: center;
  position: relative;
}

.logo-cell::after {
  content: "";
  position: absolute;
  top: -4px; right: -4px;
  width: 8px; height: 8px;
  background: var(--grn);
}

.logo-cell b {
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 600;
  color: var(--grn);
}

.logo-word {
  font-family: var(--disp);
  font-size: 19px;
  font-weight: 700;
  color: var(--txt);
  letter-spacing: -0.3px;
}

.logo-word em { font-style: normal; color: var(--grn); }

.logo-word small {
  display: block;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 3.2px;
  text-transform: uppercase;
  color: var(--dim);
}

.main-nav { display: flex; gap: 4px; align-items: center; }

.main-nav a {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--sub);
  padding: 10px 16px;
  border: 1px solid transparent;
  transition: color .2s, border-color .2s;
}

.main-nav a:hover { color: var(--txt); border-color: var(--edge); }

.main-nav a.active {
  color: var(--grn);
  border-color: var(--grn-deep);
}

.head-cta {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--bg) !important;
  background: var(--grn);
  padding: 12px 22px !important;
  border: 1px solid var(--grn) !important;
}

.head-cta:hover { background: var(--grn-hi); border-color: var(--grn-hi) !important; }

.burger {
  display: none;
  background: none;
  border: 1px solid var(--edge);
  color: var(--txt);
  width: 44px; height: 44px;
  font-size: 18px;
  cursor: pointer;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--head-h);
  left: 0; right: 0;
  z-index: 290;
  background: var(--bg2);
  border-bottom: 1px solid var(--edge);
  padding: 12px 24px 24px;
}

.mobile-nav.open { display: block; }

.mobile-nav a {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--sub);
  padding: 14px 0;
  border-bottom: 1px solid var(--edge-soft);
}

.mobile-nav a.active { color: var(--grn); }

main { padding-top: var(--head-h); }

/* ---------------- Hero ---------------- */

.hero {
  position: relative;
  min-height: calc(100vh - var(--head-h));
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--edge-soft);
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(var(--edge-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--edge-soft) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 80% at 60% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 60% 30%, #000 20%, transparent 75%);
  opacity: .55;
}

.hero-helix {
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  width: 620px;
  height: 620px;
  opacity: .8;
  pointer-events: none;
}

.hero-inner { position: relative; padding: 100px 0; }

.hero-meta {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-meta .mono-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.hero-meta .mono-tag::before {
  content: "";
  width: 8px; height: 8px;
  background: var(--grn);
}

.hero h1 {
  font-size: clamp(46px, 7vw, 96px);
  font-weight: 700;
  letter-spacing: -2px;
  max-width: 12ch;
}

.hero h1 .alt { color: var(--grn); }

.hero h1 .thin {
  display: block;
  font-weight: 400;
  color: var(--sub);
}

.hero .lede {
  margin-top: 32px;
  font-size: 18px;
  max-width: 540px;
  color: var(--sub);
}

.hero-cta { margin-top: 44px; display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 30px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px solid var(--grn);
  transition: background .2s, color .2s, border-color .2s;
}

.btn-fill { background: var(--grn); color: var(--bg); }
.btn-fill:hover { background: var(--grn-hi); border-color: var(--grn-hi); color: var(--bg); }

.btn-line { background: transparent; color: var(--txt); border-color: var(--edge); }
.btn-line:hover { border-color: var(--grn); color: var(--grn); }

.hero-readout {
  position: relative;
  margin-top: 64px;
  display: flex;
  gap: 0;
  border: 1px solid var(--edge);
  width: fit-content;
  background: var(--bg2);
}

.readout-cell {
  padding: 18px 30px;
  border-right: 1px solid var(--edge-soft);
}

.readout-cell:last-child { border-right: 0; }

.readout-cell .rv-num {
  font-family: var(--disp);
  font-size: 26px;
  font-weight: 700;
  color: var(--txt);
}

.readout-cell .rv-num i { font-style: normal; color: var(--grn); }

.readout-cell .rv-cap {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--dim);
  margin-top: 4px;
}

/* ---------------- Sections ---------------- */

.section { padding: 104px 0; border-bottom: 1px solid var(--edge-soft); position: relative; }

.sec-tag {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.sec-tag::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--edge-soft);
}

.sec-head h2 {
  font-size: clamp(34px, 4.4vw, 58px);
  letter-spacing: -1px;
  max-width: 18ch;
}

.sec-head h2 .alt { color: var(--grn); }

.sec-head .sub {
  margin-top: 20px;
  max-width: 560px;
  font-size: 16px;
}

.sec-head { margin-bottom: 64px; }

/* ---------------- Domain tiles (periodic-style) ---------------- */

.domain-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}

.el-tile {
  position: relative;
  border: 1px solid var(--edge);
  background: var(--cell);
  padding: 16px 14px 14px;
  min-height: 128px;
  display: flex;
  flex-direction: column;
  transition: background .2s, border-color .2s, transform .2s;
}

.el-tile:hover {
  background: var(--cell-hi);
  border-color: var(--grn-deep);
  transform: translateY(-3px);
}

.el-tile .an {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--dim);
}

.el-tile .sym {
  font-family: var(--disp);
  font-size: 27px;
  font-weight: 700;
  color: var(--grn);
  margin-top: auto;
}

.el-tile .nm {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--sub);
  margin-top: 6px;
  line-height: 1.45;
}

.domain-legend {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 34px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--dim);
}

.domain-legend b {
  color: var(--grn);
  font-weight: 500;
}

/* ---------------- Program rows ---------------- */

.prog-list { border-top: 1px solid var(--edge); }

.prog {
  display: grid;
  grid-template-columns: 90px 1fr 2fr auto;
  gap: 36px;
  align-items: center;
  padding: 34px 0;
  border-bottom: 1px solid var(--edge-soft);
  transition: background .2s;
}

.prog:hover { background: var(--bg2); }

.prog .pid {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--grn-deep);
}

.prog h3 { font-size: 23px; letter-spacing: -0.5px; }

.prog p { font-size: 14.5px; }

.prog .arrow {
  font-family: var(--mono);
  color: var(--edge);
  font-size: 22px;
  transition: color .2s, transform .2s;
}

.prog:hover .arrow { color: var(--grn); transform: translateX(6px); }

/* ---------------- Split feature ---------------- */

.duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.duo h2 { font-size: clamp(30px, 3.8vw, 48px); letter-spacing: -1px; }
.duo h2 .alt { color: var(--grn); }
.duo > div > p { margin-top: 18px; font-size: 15.5px; }

.spec-list { display: flex; flex-direction: column; }

.spec-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 4px;
  border-bottom: 1px solid var(--edge-soft);
  font-size: 14px;
}

.spec-row .k {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--dim);
  padding-top: 3px;
  white-space: nowrap;
}

.spec-row .v { color: var(--txt); text-align: right; }

/* ---------------- Lab card / bracket panel ---------------- */

.bracket {
  position: relative;
  border: 1px solid var(--edge);
  background: var(--cell);
  padding: 44px;
}

.bracket::before,
.bracket::after {
  content: "";
  position: absolute;
  width: 18px; height: 18px;
  border-color: var(--grn);
  border-style: solid;
}

.bracket::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.bracket::after { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }

.bracket .b-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--grn);
  margin-bottom: 20px;
}

.bracket h3 { font-size: 26px; margin-bottom: 16px; }
.bracket p { font-size: 14.5px; }

/* ---------------- Stat band ---------------- */

.stat-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--edge);
  background: var(--bg2);
}

.stat-cell {
  padding: 40px 34px;
  border-right: 1px solid var(--edge-soft);
}

.stat-cell:last-child { border-right: 0; }

.stat-cell .n {
  font-family: var(--disp);
  font-size: 46px;
  font-weight: 700;
  color: var(--txt);
  letter-spacing: -1px;
}

.stat-cell .n i { font-style: normal; color: var(--grn); }

.stat-cell .c {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 2.2px;
  text-transform: uppercase;
  color: var(--dim);
  margin-top: 10px;
}

/* ---------------- CTA ---------------- */

.cta-zone {
  padding: 104px 0;
  text-align: center;
  background:
    radial-gradient(700px 300px at 50% 0%, #0e2418 0%, transparent 70%);
}

.cta-zone .mono-tag { display: inline-block; margin-bottom: 22px; }
.cta-zone h2 { font-size: clamp(34px, 4.6vw, 62px); letter-spacing: -1.5px; }
.cta-zone h2 .alt { color: var(--grn); }
.cta-zone p { margin: 22px auto 42px; max-width: 540px; font-size: 16px; }

/* ---------------- Footer ---------------- */

.site-foot {
  border-top: 1px solid var(--edge);
  background: var(--bg2);
  padding: 72px 0 40px;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 52px;
  border-bottom: 1px solid var(--edge-soft);
}

.foot-grid h4 {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 2.8px;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 20px;
}

.foot-grid ul { list-style: none; }
.foot-grid li { margin-bottom: 11px; font-size: 14px; }
.foot-grid li a { color: var(--sub); }
.foot-grid li a:hover { color: var(--grn); }

.foot-desc { margin-top: 18px; font-size: 13.5px; max-width: 340px; color: var(--dim); }

.foot-bar {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 30px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 1px;
  color: var(--dim);
}

.foot-bar a { color: var(--sub); }
.foot-bar a:hover { color: var(--grn); }

/* ---------------- Page hero ---------------- */

.page-hero {
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--edge-soft);
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: "";
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 46%;
  background: repeating-linear-gradient(-45deg, transparent 0 14px, var(--edge-soft) 14px 15px);
  opacity: .35;
  mask-image: linear-gradient(90deg, transparent, #000);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000);
  pointer-events: none;
}

.crumb {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2.6px;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 30px;
}

.crumb a { color: var(--grn); }

.page-hero h1 { font-size: clamp(40px, 5.4vw, 72px); letter-spacing: -1.5px; }
.page-hero h1 .alt { color: var(--grn); }
.page-hero .lede { margin-top: 26px; max-width: 620px; font-size: 17px; position: relative; }

/* ---------------- Contact ---------------- */

.contact-cols {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 64px;
  padding: 84px 0;
}

.coord-card {
  border: 1px solid var(--edge);
  background: var(--cell);
  padding: 28px 30px;
  margin-bottom: 20px;
  position: relative;
}

.coord-card::before {
  content: attr(data-id);
  position: absolute;
  top: 28px; right: 28px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--grn-deep);
}

.coord-card .lbl {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2.6px;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 10px;
}

.coord-card .val {
  font-family: var(--disp);
  font-size: 22px;
  font-weight: 600;
  color: var(--txt);
  line-height: 1.35;
}

.coord-card .val a { color: var(--txt); }
.coord-card .val a:hover { color: var(--grn); }

.coord-card .nt { margin-top: 8px; font-size: 13px; color: var(--dim); }

.form-panel {
  border: 1px solid var(--edge);
  background: var(--cell);
  padding: 48px;
  position: relative;
}

.form-panel::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px;
  width: 18px; height: 18px;
  border-top: 2px solid var(--grn);
  border-left: 2px solid var(--grn);
}

.form-panel h2 { font-size: 30px; letter-spacing: -0.5px; margin-bottom: 8px; }
.form-panel > p { font-size: 14px; color: var(--dim); margin-bottom: 34px; }

.f-field { margin-bottom: 22px; }

.f-field label {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 9px;
}

.f-field input,
.f-field select,
.f-field textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--edge);
  color: var(--txt);
  font-family: var(--body-f);
  font-size: 15px;
  padding: 14px 16px;
  outline: none;
  transition: border-color .2s;
}

.f-field textarea { min-height: 140px; resize: vertical; }

.f-field input:focus,
.f-field select:focus,
.f-field textarea:focus { border-color: var(--grn); }

.f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.f-note { font-size: 12.5px; color: var(--dim); margin-top: 18px; font-family: var(--mono); }

/* ---------------- Legal prose ---------------- */

.prose { max-width: 840px; padding: 76px 0 100px; }

.prose .policy-head {
  border: 1px solid var(--edge);
  border-left: 3px solid var(--grn);
  background: var(--cell);
  padding: 30px 34px;
  margin-bottom: 44px;
  font-size: 15.5px;
}

.prose .upd {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--grn);
  border: 1px solid var(--grn-deep);
  padding: 7px 14px;
  margin-bottom: 26px;
}

.prose h2 {
  font-size: 29px;
  margin: 54px 0 18px;
  padding-top: 38px;
  border-top: 1px solid var(--edge-soft);
  letter-spacing: -0.5px;
}

.prose h2:first-of-type { border-top: 0; padding-top: 0; margin-top: 44px; }
.prose h2::before {
  content: "§ ";
  color: var(--grn-deep);
  font-family: var(--mono);
  font-size: 20px;
}

.prose h3 { font-size: 19px; margin: 30px 0 10px; }

.prose p { margin-bottom: 15px; font-size: 15.5px; }
.prose ul { margin: 0 0 15px 22px; font-size: 15.5px; }
.prose li { margin-bottom: 8px; }
.prose strong { color: var(--txt); }

/* ---------------- FAQ ---------------- */

.faq { border-top: 1px solid var(--edge); }

.faq-row {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 28px;
  padding: 30px 0;
  border-bottom: 1px solid var(--edge-soft);
}

.faq-row .qn {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--grn-deep);
  padding-top: 5px;
}

.faq-row h3 { font-size: 20px; margin-bottom: 10px; }
.faq-row p { font-size: 14.5px; max-width: 760px; }

/* ---------------- Reveal ---------------- */

.rv { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.rv.in { opacity: 1; transform: none; }

/* ---------------- Responsive ---------------- */

@media (max-width: 1100px) {
  .domain-grid { grid-template-columns: repeat(4, 1fr); }
  .stat-band { grid-template-columns: repeat(2, 1fr); }
  .stat-cell { border-bottom: 1px solid var(--edge-soft); }
}

@media (max-width: 900px) {
  .main-nav { display: none; }
  .burger { display: block; }
  .wrap { padding: 0 24px; }
  .duo { grid-template-columns: 1fr; gap: 44px; }
  .contact-cols { grid-template-columns: 1fr; gap: 44px; }
  .prog { grid-template-columns: 60px 1fr; }
  .prog p, .prog .arrow { grid-column: 2; }
  .prog .arrow { display: none; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .domain-grid { grid-template-columns: repeat(3, 1fr); }
  .hero-helix { opacity: .3; }
  .f-row { grid-template-columns: 1fr; }
  .form-panel { padding: 32px 24px; }
  .hero-readout { flex-wrap: wrap; }
  .readout-cell { flex: 1 1 50%; border-bottom: 1px solid var(--edge-soft); }
}

@media (max-width: 560px) {
  .domain-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-band { grid-template-columns: 1fr; }
}