:root {
  color-scheme: dark;
  --ink: #f4f7ef;
  --muted: #9fa99b;
  --ground: #070a08;
  --panel: #0e1410;
  --panel-2: #121a14;
  --line: #29332c;
  --signal: #b7ff4a;
  --signal-soft: #d8ff9e;
  --danger: #ff9b86;
  --max: 1180px;
  --radius: 20px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    linear-gradient(rgba(183, 255, 74, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(183, 255, 74, 0.025) 1px, transparent 1px),
    var(--ground);
  background-size: 48px 48px;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 3px;
}

.site-header {
  align-items: center;
  backdrop-filter: blur(16px);
  background: rgba(7, 10, 8, 0.86);
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  padding: 18px max(24px, calc((100vw - var(--max)) / 2));
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { align-items: center; display: inline-flex; font-size: 1rem; font-weight: 800; gap: 10px; letter-spacing: -0.02em; text-decoration: none; }
.brand-mark { background: var(--signal); border-radius: 2px; box-shadow: 0 0 24px rgba(183, 255, 74, .4); display: inline-block; height: 18px; transform: skew(-15deg); width: 8px; }
nav { align-items: center; display: flex; gap: 26px; }
nav a { color: var(--muted); font-size: .88rem; font-weight: 650; text-decoration: none; }
nav a:hover { color: var(--ink); }
.nav-cta { border: 1px solid var(--line); border-radius: 999px; color: var(--ink); padding: 8px 15px; }

main { overflow: hidden; }
.hero, .section, .problem-band { margin-inline: auto; max-width: var(--max); }
.hero { min-height: 760px; padding: 92px 24px 80px; }
.eyebrow, .section-kicker { color: var(--signal); font-size: .74rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.eyebrow { align-items: center; display: flex; gap: 12px; margin-bottom: 58px; }
.eyebrow span { border: 1px solid var(--line); border-radius: 999px; color: var(--muted); padding: 5px 10px; }
.hero-grid { align-items: end; display: grid; gap: 72px; grid-template-columns: minmax(0, 1.35fr) minmax(320px, .65fr); }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(4.1rem, 9vw, 8.4rem); letter-spacing: -.075em; line-height: .83; margin-bottom: 42px; max-width: 900px; }
h1 em { color: var(--signal); font-style: normal; }
.hero-lede { color: #c3cbc0; font-size: clamp(1.05rem, 2vw, 1.3rem); max-width: 670px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { align-items: center; border: 1px solid transparent; border-radius: 999px; cursor: pointer; display: inline-flex; font: inherit; font-size: .9rem; font-weight: 800; justify-content: center; min-height: 50px; padding: 0 22px; text-decoration: none; transition: transform .2s ease, background .2s ease, color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--signal); color: #10160d; }
.button-secondary { border-color: var(--line); color: var(--ink); }
.button-secondary:hover { background: var(--panel); }
.button:disabled { cursor: not-allowed; filter: grayscale(1); opacity: .38; transform: none; }

.signal-card { background: linear-gradient(145deg, rgba(183, 255, 74, .08), rgba(14, 20, 16, .96) 45%); border: 1px solid #3c4b40; border-radius: var(--radius); box-shadow: 0 28px 90px rgba(0,0,0,.45); min-height: 365px; padding: 26px; position: relative; }
.signal-card::after { border: 1px solid rgba(183, 255, 74, .25); border-radius: inherit; content: ""; inset: 8px; pointer-events: none; position: absolute; }
.signal-topline { color: var(--muted); display: flex; font-size: .72rem; font-weight: 750; justify-content: space-between; letter-spacing: .08em; text-transform: uppercase; }
.status { align-items: center; color: var(--signal-soft); display: flex; gap: 7px; }
.status i { animation: pulse 2s infinite; background: var(--signal); border-radius: 50%; height: 7px; width: 7px; }
@keyframes pulse { 50% { box-shadow: 0 0 0 7px rgba(183, 255, 74, 0); } 0%, 100% { box-shadow: 0 0 0 0 rgba(183, 255, 74, .35); } }
.metric { margin: 56px 0 30px; }
.metric strong { display: block; font-size: 3.2rem; letter-spacing: -.06em; line-height: 1; }
.metric span { color: var(--signal); font-size: 1.25rem; font-weight: 650; }
.trace { align-items: center; display: flex; gap: 5px; height: 48px; margin-bottom: 30px; }
.trace span { background: var(--signal); display: block; height: 2px; width: 16%; }
.trace span:nth-child(2) { transform: rotate(-38deg); }
.trace span:nth-child(3) { height: 40px; transform: skew(-22deg); width: 3px; }
.trace span:nth-child(4) { transform: rotate(28deg); }
.signal-card p { color: var(--muted); font-size: .85rem; margin: 0; max-width: 310px; }

.problem-band { align-items: start; border-bottom: 1px solid var(--line); border-top: 1px solid var(--line); display: grid; gap: 48px; grid-template-columns: .45fr 1.55fr; padding: 68px 24px; }
.problem-band h2, .section h2, .legal h1 { font-size: clamp(2.6rem, 5.8vw, 5.4rem); letter-spacing: -.055em; line-height: .97; margin-bottom: 24px; }
.problem-band p:last-child, .section-heading > p:last-child { color: var(--muted); font-size: 1.08rem; max-width: 680px; }
.section { padding: 120px 24px; }
.section-heading { max-width: 900px; }
.research-grid { display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); margin-top: 64px; }
.research-grid article { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); min-height: 330px; padding: 28px; transition: border-color .2s ease, transform .2s ease; }
.research-grid article:hover { border-color: #516456; transform: translateY(-4px); }
.card-index { color: var(--signal); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .8rem; }
.research-grid h3 { font-size: 1.5rem; letter-spacing: -.03em; margin: 92px 0 18px; }
.research-grid p { color: var(--muted); font-size: .94rem; margin: 0; }

.principles { border-top: 1px solid var(--line); display: grid; gap: 80px; grid-template-columns: .7fr 1.3fr; }
.principles ol { list-style: none; margin: 0; padding: 0; }
.principles li { border-top: 1px solid var(--line); color: var(--muted); display: grid; gap: 16px; grid-template-columns: 46px minmax(180px, .6fr) 1fr; padding: 22px 0; }
.principles li:last-child { border-bottom: 1px solid var(--line); }
.principles li span { color: var(--signal); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.principles li strong { color: var(--ink); }

.join { background: var(--panel-2); border: 1px solid var(--line); border-radius: 30px; display: grid; gap: 90px; grid-template-columns: 1fr 1fr; margin-bottom: 100px; padding: 64px; }
.join h2 { font-size: clamp(2.8rem, 5vw, 4.8rem); }
.join-copy > p:not(.section-kicker) { color: var(--muted); }
.fine-print { border-left: 2px solid var(--signal); font-size: .78rem; margin-top: 34px; padding-left: 14px; }
.join-form { align-self: start; }
.field { margin-bottom: 20px; }
.field label { display: block; font-size: .8rem; font-weight: 750; margin-bottom: 7px; }
.field label span { color: var(--muted); font-weight: 500; }
input, select, textarea { background: #080c09; border: 1px solid #354037; border-radius: 10px; color: var(--ink); font: inherit; padding: 13px 14px; width: 100%; }
input:hover, select:hover, textarea:hover { border-color: #56665a; }
textarea { resize: vertical; }
.trap { left: -10000px; position: absolute; }
.consent { align-items: flex-start; color: var(--muted); display: grid; font-size: .78rem; gap: 11px; grid-template-columns: 20px 1fr; margin: 12px 0 22px; }
.consent input { accent-color: var(--signal); height: 18px; margin-top: 2px; width: 18px; }
.consent a { color: var(--ink); }
.submit-button { width: 100%; }
.form-status { font-size: .84rem; margin: 14px 0 0; min-height: 24px; }
.form-status.error { color: var(--danger); }
.form-status.success { color: var(--signal-soft); }

footer { align-items: center; border-top: 1px solid var(--line); color: var(--muted); display: grid; font-size: .8rem; gap: 20px; grid-template-columns: auto 1fr auto auto; margin: 0 auto; max-width: var(--max); padding: 42px 24px 60px; }
.footer-brand { color: var(--ink); }
.footer-links { display: flex; gap: 18px; }
.footer-links a:hover { color: var(--ink); }
.copyright { margin: 0; }

.legal { margin: 0 auto; max-width: 900px; padding: 100px 24px 120px; }
.legal h1 { margin-top: 10px; }
.legal .lede { color: var(--muted); font-size: 1.08rem; margin-bottom: 54px; }
.legal h2 { border-top: 1px solid var(--line); font-size: 1.35rem; letter-spacing: -.02em; margin: 42px 0 14px; padding-top: 28px; }
.legal p, .legal li { color: #bac3b8; }
.legal li + li { margin-top: 8px; }
.legal-notice { background: rgba(183, 255, 74, .07); border: 1px solid rgba(183, 255, 74, .3); border-radius: 12px; color: var(--signal-soft); padding: 16px; }
.request-form { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); margin-top: 38px; padding: 26px; }

@media (max-width: 850px) {
  nav a:not(.nav-cta) { display: none; }
  .hero { min-height: auto; padding-top: 68px; }
  .eyebrow { margin-bottom: 40px; }
  .hero-grid, .problem-band, .principles, .join { grid-template-columns: 1fr; }
  .signal-card { max-width: 560px; }
  .research-grid { grid-template-columns: 1fr; }
  .research-grid article { min-height: 240px; }
  .research-grid h3 { margin-top: 54px; }
  .principles { gap: 24px; }
  .join { gap: 42px; margin-inline: 14px; padding: 34px 24px; }
  footer { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .site-header { padding-inline: 18px; }
  .hero, .section { padding-inline: 18px; }
  h1 { font-size: clamp(3.55rem, 18vw, 5rem); }
  .hero-actions .button { width: 100%; }
  .problem-band { gap: 16px; }
  .principles li { grid-template-columns: 38px 1fr; }
  .principles li strong { grid-column: 2; }
  .principles li { column-gap: 10px; }
  footer { align-items: start; grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
  .status i { animation: none; }
}