:root {
  --color-bg: #0b0f14;
  --color-surface: #121923;
  --color-surface-alt: #182330;
  --color-text: #edf4ef;
  --color-muted: #9fb0a9;
  --color-primary: #8cffd2;
  --color-primary-dark: #35c79d;
  --color-secondary: #f0c36a;
  --color-accent: #ff6f61;
  --color-border: rgba(140, 255, 210, .22);
  --font-heading: "Space Grotesk", "Segoe UI", Arial, sans-serif;
  --font-body: "Inter", "Segoe UI", Arial, sans-serif;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 34px;
  --shadow-soft: 0 24px 80px rgba(0, 0, 0, .38);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background:
    radial-gradient(circle at 15% 10%, rgba(140,255,210,.08), transparent 28rem),
    radial-gradient(circle at 90% 0%, rgba(240,195,106,.06), transparent 30rem),
    linear-gradient(180deg, #071018 0%, var(--color-bg) 45%, #0e1114 100%);
  line-height: 1.65;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .18;
  background-image:
    linear-gradient(rgba(140,255,210,.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,255,210,.08) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at center, black, transparent 75%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
p { margin: 0 0 1rem; }
h1, h2, h3 { font-family: var(--font-heading); line-height: 1.05; margin: 0 0 1rem; letter-spacing: -.035em; }
h1 { font-size: clamp(2.6rem, 8vw, 6.5rem); }
h2 { font-size: clamp(2rem, 4.5vw, 4rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.65rem); }
::selection { background: var(--color-primary); color: #06100d; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  backdrop-filter: blur(18px);
  background: rgba(7, 14, 20, .78);
  border-bottom: 1px solid var(--color-border);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: -.03em;
}
.brand span span { color: var(--color-primary); }
.site-nav {
  display: flex;
  align-items: center;
  gap: .3rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.site-nav a {
  color: var(--color-muted);
  padding: .7rem .85rem;
  border-radius: 999px;
  transition: color .2s ease, background .2s ease, transform .2s ease;
}
.site-nav a:hover { color: var(--color-text); background: rgba(255,255,255,.06); transform: translateY(-1px); }
.site-nav .nav-cta { color: #06100d; background: var(--color-primary); font-weight: 800; }
.site-nav .nav-cta:hover { color: #06100d; background: #b7ffe5; }

.hero,
.page-hero,
.contact-hero {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(4rem, 8vw, 7rem) 0 clamp(3rem, 7vw, 6rem);
}
.station-hero {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
}
.hero-copy { position: relative; }
.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin: 0 0 1rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: .17em;
  font-size: .76rem;
  font-weight: 800;
}
.eyebrow::before,
.section-kicker::before {
  content: "";
  width: .65rem;
  height: .65rem;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 22px var(--color-primary);
}
.lead {
  max-width: 780px;
  color: #c8d7d0;
  font-size: clamp(1.08rem, 2vw, 1.35rem);
}
.hero-actions { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 2rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.1rem;
  padding: .9rem 1.25rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 850;
  letter-spacing: -.01em;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn.primary { color: #04120e; background: var(--color-primary); box-shadow: 0 0 0 6px rgba(140,255,210,.08), 0 18px 40px rgba(53,199,157,.22); }
.btn.primary:hover { background: #b8ffe7; box-shadow: 0 0 0 9px rgba(140,255,210,.1), 0 24px 52px rgba(53,199,157,.25); }
.btn.ghost { color: var(--color-text); border-color: var(--color-border); background: rgba(255,255,255,.04); }
.btn.ghost:hover { border-color: rgba(240,195,106,.55); }

.signal-console {
  position: relative;
  isolation: isolate;
  padding: 1rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(18,25,35,.9), rgba(8,13,19,.8));
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.signal-console::before {
  content: "";
  position: absolute;
  inset: 1.2rem;
  border: 1px dashed rgba(240,195,106,.35);
  border-radius: calc(var(--radius-lg) - 10px);
  pointer-events: none;
}
.signal-console::after {
  content: "";
  position: absolute;
  width: 160%;
  height: 2px;
  top: 45%;
  left: -30%;
  background: linear-gradient(90deg, transparent, rgba(140,255,210,.7), transparent);
  animation: scanline 6s ease-in-out infinite;
}
@keyframes scanline { 0%, 100% { transform: translateY(-80px) rotate(-8deg); opacity: .1; } 50% { transform: translateY(80px) rotate(-8deg); opacity: .8; } }
.console-readout {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .7rem;
  margin-top: -1.5rem;
  position: relative;
  z-index: 2;
}
.console-readout span { display: block; color: var(--color-muted); font-size: .7rem; letter-spacing: .14em; }
.console-readout strong { display: block; color: var(--color-primary); font-family: var(--font-heading); }
.console-readout > * { padding: .75rem; background: rgba(5, 11, 16, .68); border: 1px solid var(--color-border); border-radius: var(--radius-sm); }
.console-readout span:nth-of-type(3), .console-readout strong:nth-of-type(3) { color: var(--color-secondary); }

.section {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 6rem) 0;
}
.split-section {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.section-heading { max-width: 880px; margin-bottom: 2rem; }
.section-heading.narrow { max-width: 760px; margin-left: auto; margin-right: auto; text-align: center; }
.section-heading p { color: var(--color-muted); font-size: 1.05rem; }
.log-strip {
  display: grid;
  gap: .8rem;
  padding-left: 1.3rem;
  border-left: 1px solid rgba(140,255,210,.35);
}
.log-strip article {
  position: relative;
  padding: 1.1rem 1.2rem;
  border: 1px solid rgba(140,255,210,.18);
  border-radius: var(--radius-md);
  background: rgba(18,25,35,.72);
}
.log-strip article::before {
  content: "";
  position: absolute;
  width: .8rem;
  height: .8rem;
  border-radius: 50%;
  left: calc(-1.3rem - .4rem - 1px);
  top: 1.4rem;
  background: var(--color-secondary);
  box-shadow: 0 0 18px rgba(240,195,106,.85);
}
.log-strip span { color: var(--color-secondary); font-family: var(--font-heading); }
.log-strip strong { display: block; font-size: 1.2rem; margin: .15rem 0; }
.log-strip p { color: var(--color-muted); margin: 0; }

.route-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr .9fr;
  grid-auto-rows: minmax(190px, auto);
  gap: 1rem;
}
.route-card {
  position: relative;
  min-height: 190px;
  padding: 1.4rem;
  border: 1px solid rgba(140,255,210,.18);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255,255,255,.06), transparent),
    var(--color-surface);
  overflow: hidden;
  transition: transform .25s ease, border-color .25s ease, background .25s ease;
}
.route-card::after {
  content: "";
  position: absolute;
  inset: auto -20% -35% 20%;
  height: 110px;
  border-top: 1px solid rgba(140,255,210,.28);
  transform: rotate(-12deg);
}
.route-card:hover { transform: translateY(-5px); border-color: rgba(140,255,210,.6); background-color: #162433; }
.route-card.tall { grid-row: span 2; }
.route-card.wide { grid-column: span 2; }
.signal-dot {
  display: inline-block;
  width: .7rem;
  height: .7rem;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 20px var(--color-primary);
  margin-bottom: 1.2rem;
}
.route-card p { color: var(--color-muted); }

.dark-band {
  width: min(1280px, calc(100% - 1rem));
  padding-left: clamp(1rem, 4vw, 4rem);
  padding-right: clamp(1rem, 4vw, 4rem);
  border: 1px solid rgba(240,195,106,.25);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 20% 0%, rgba(240,195,106,.1), transparent 30rem),
    linear-gradient(135deg, #17140f, #0d1517 70%);
}
.dial-list { display: grid; gap: .9rem; }
.dial-list article {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 1rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.055);
  border: 1px solid rgba(255,255,255,.09);
}
.dial-list b { color: var(--color-secondary); font-family: var(--font-heading); }
.dial-list span { color: #d5ded9; }

.cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(2rem, 5vw, 4rem);
  margin-bottom: clamp(2rem, 5vw, 4rem);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(140,255,210,.13), rgba(255,111,97,.07)), var(--color-surface);
  border: 1px solid rgba(140,255,210,.26);
}
.cta-panel.compact { display: grid; grid-template-columns: 1fr auto; }
.cta-panel p { color: var(--color-muted); max-width: 760px; }

.page-hero {
  display: grid;
  grid-template-columns: 1.1fr .75fr;
  align-items: center;
  gap: 2rem;
}
.scenario-hero img,
.faq-hero img,
.article-hero img { border-radius: var(--radius-lg); border: 1px solid var(--color-border); background: rgba(255,255,255,.03); box-shadow: var(--shadow-soft); }
.matrix-section { padding-top: 1rem; }
.access-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.matrix-card {
  min-height: 260px;
  padding: 1.3rem;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid rgba(255,255,255,.1);
}
.matrix-card span { display: inline-block; margin-bottom: 2rem; font-size: .8rem; text-transform: uppercase; letter-spacing: .16em; }
.matrix-card.low { border-color: rgba(140,255,210,.42); }
.matrix-card.low span { color: var(--color-primary); }
.matrix-card.mid { border-color: rgba(240,195,106,.45); }
.matrix-card.mid span { color: var(--color-secondary); }
.matrix-card.high { border-color: rgba(255,111,97,.48); }
.matrix-card.high span { color: var(--color-accent); }
.matrix-card p { color: var(--color-muted); }

.scenario-ledger {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 2rem;
  align-items: start;
}
.scenario-ledger.reverse { grid-template-columns: 1fr 250px; }
.scenario-ledger.reverse .ledger-note { order: 2; }
.ledger-note {
  position: sticky;
  top: 6rem;
  display: grid;
  gap: .35rem;
  padding: 1.2rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(240,195,106,.35);
  background: #161713;
}
.ledger-note strong { font-family: var(--font-heading); color: var(--color-secondary); font-size: 1.55rem; }
.ledger-note span { color: var(--color-muted); }
.protocol-grid, .fault-grid, .safety-beacons, .method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}
.protocol-card, .fault-grid article, .safety-beacons article, .trust-stack article, .example-card {
  padding: 1.2rem;
  border: 1px solid rgba(140,255,210,.18);
  border-radius: var(--radius-md);
  background: rgba(18,25,35,.8);
}
.protocol-card p, .fault-grid p, .safety-beacons p, .trust-stack p, .example-card p { color: var(--color-muted); }
.text-link { display: inline-flex; margin-top: 1.3rem; color: var(--color-primary); font-weight: 800; }
.signal-steps {
  display: grid;
  gap: .75rem;
  padding: 0;
  list-style: none;
}
.signal-steps li {
  padding: 1rem 1rem 1rem 1.3rem;
  border-left: 3px solid var(--color-primary);
  background: rgba(255,255,255,.04);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.fault-grid { grid-template-columns: repeat(4, 1fr); }

.article-layout { width: min(1180px, calc(100% - 2rem)); margin: 0 auto; }
.article-hero { padding: clamp(4rem, 8vw, 7rem) 0 2rem; }
.article-hero img { margin-top: 2rem; }
.article-body {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  padding: 2rem 0 clamp(3rem, 7vw, 6rem);
}
.article-body section { margin-bottom: 3.5rem; }
.article-body p { color: #c7d4cf; }
.toc-box {
  position: sticky;
  top: 6rem;
  align-self: start;
  display: grid;
  gap: .55rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.045);
  border: 1px solid var(--color-border);
}
.toc-box strong { color: var(--color-secondary); font-family: var(--font-heading); }
.toc-box a { color: var(--color-muted); }
.toc-box a:hover { color: var(--color-primary); }
.prompt-cassette {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 0;
  margin: 1.5rem 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.prompt-cassette span,
.prompt-cassette p {
  margin: 0;
  padding: 1rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.prompt-cassette span { background: rgba(140,255,210,.08); color: var(--color-primary); font-weight: 900; text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; }
.prompt-cassette p { background: rgba(18,25,35,.72); }
.example-stack { display: grid; gap: 1rem; }
.check-wave { list-style: none; padding: 0; display: grid; gap: .8rem; }
.check-wave li {
  padding: .9rem 1rem .9rem 2.6rem;
  position: relative;
  background: rgba(255,255,255,.04);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,.08);
}
.check-wave li::before { content: "◇"; position: absolute; left: 1rem; color: var(--color-primary); }
.beacon-quote {
  margin: 2rem 0 0;
  padding: 1.4rem;
  border-left: 4px solid var(--color-secondary);
  border-radius: var(--radius-md);
  background: rgba(240,195,106,.08);
  color: #f4e5c5;
  font-size: 1.2rem;
}

.faq-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 2rem;
}
.frequency-card {
  position: sticky;
  top: 6rem;
  align-self: start;
  padding: 1.3rem;
  border-radius: 50px 16px 50px 16px;
  background: linear-gradient(145deg, rgba(255,111,97,.14), rgba(18,25,35,.9));
  border: 1px solid rgba(255,111,97,.35);
}
.frequency-card span { text-transform: uppercase; letter-spacing: .14em; color: var(--color-accent); font-size: .75rem; }
.frequency-card strong { display: block; font-family: var(--font-heading); font-size: 2rem; margin: .4rem 0; }
.frequency-card p { color: var(--color-muted); }
.faq-item {
  border: 1px solid rgba(140,255,210,.18);
  border-radius: var(--radius-md);
  margin-bottom: .8rem;
  background: rgba(18,25,35,.78);
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  padding: 1rem 1.2rem;
  font-family: var(--font-heading);
  font-weight: 800;
}
.faq-item summary:hover { color: var(--color-primary); }
.faq-item p { padding: 0 1.2rem 1.2rem; color: var(--color-muted); }
.safety-beacons { grid-template-columns: repeat(4, 1fr); }
.safety-beacons article span {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: 1rem;
  border-radius: 50%;
  color: #06100d;
  background: var(--color-secondary);
  font-weight: 900;
  font-family: var(--font-heading);
}

.contact-hero {
  display: grid;
  grid-template-columns: 1fr 330px;
  gap: 2rem;
  align-items: center;
}
.contact-radar {
  min-height: 330px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 2rem;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(140,255,210,.18) 0 14%, transparent 15% 30%, rgba(140,255,210,.08) 31% 32%, transparent 33% 50%, rgba(240,195,106,.08) 51% 52%, transparent 53%),
    rgba(18,25,35,.75);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}
.contact-radar strong { grid-column: 1 / -1; font-family: var(--font-heading); font-size: 1.4rem; }
.contact-radar span { padding: .4rem .65rem; border-radius: 999px; background: rgba(0,0,0,.25); color: var(--color-primary); font-weight: 800; }
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 2rem;
  align-items: start;
}
.signal-form {
  display: grid;
  gap: 1rem;
  padding: clamp(1.2rem, 4vw, 2rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(18,25,35,.82);
  box-shadow: var(--shadow-soft);
}
.signal-form label { display: grid; gap: .45rem; color: #dce8e2; font-weight: 750; }
input, textarea, select {
  width: 100%;
  border: 1px solid rgba(140,255,210,.2);
  border-radius: var(--radius-sm);
  padding: .9rem 1rem;
  background: rgba(5, 11, 16, .78);
  color: var(--color-text);
  font: inherit;
}
textarea { resize: vertical; }
.form-note { color: var(--color-muted); font-size: .9rem; margin: 0; }
.trust-stack { display: grid; gap: .9rem; }
.trust-stack h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); }
.method-grid { grid-template-columns: repeat(3, 1fr); }
.method-grid a {
  padding: 1.2rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(140,255,210,.18);
  background: rgba(255,255,255,.045);
  transition: transform .2s ease, border-color .2s ease;
}
.method-grid a:hover { transform: translateY(-4px); border-color: rgba(140,255,210,.6); }
.method-grid span { display: block; color: var(--color-muted); }
.method-grid strong { color: var(--color-primary); }

.site-footer {
  margin-top: 2rem;
  padding: clamp(2rem, 5vw, 4rem) clamp(1rem, 4vw, 4rem) 2rem;
  border-top: 1px solid var(--color-border);
  background: rgba(5, 10, 14, .85);
}
.footer-grid {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr .8fr .8fr;
  gap: 2rem;
}
.footer-grid p, .footer-grid span { color: var(--color-muted); }
.footer-grid h2 { font-size: 1rem; letter-spacing: .08em; text-transform: uppercase; color: var(--color-secondary); }
.footer-grid a:not(.brand), .footer-grid span { display: block; margin: .35rem 0; }
.footer-grid a:not(.brand):hover { color: var(--color-primary); }
.footer-brand { margin-bottom: 1rem; }
.fineprint { width: min(1180px, 100%); margin: 2rem auto 0; color: #75857f; font-size: .9rem; }

:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 4px;
}

@media (max-width: 980px) {
  .station-hero, .page-hero, .contact-hero, .split-section, .scenario-ledger, .scenario-ledger.reverse, .article-body, .faq-layout, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .scenario-ledger.reverse .ledger-note { order: 0; }
  .ledger-note, .toc-box, .frequency-card { position: static; }
  .route-grid { grid-template-columns: 1fr 1fr; }
  .route-card.tall, .route-card.wide { grid-row: auto; grid-column: auto; }
  .access-matrix, .protocol-grid, .fault-grid, .safety-beacons, .method-grid { grid-template-columns: 1fr 1fr; }
  .cta-panel, .cta-panel.compact { grid-template-columns: 1fr; align-items: start; }
  .site-header { align-items: flex-start; flex-direction: column; }
  .site-nav { justify-content: flex-start; }
}
@media (max-width: 640px) {
  h1 { font-size: clamp(2.35rem, 16vw, 4rem); }
  .site-nav a { padding: .55rem .65rem; font-size: .93rem; }
  .hero, .page-hero, .contact-hero { width: min(100% - 1rem, 1180px); }
  .section, .article-layout { width: min(100% - 1rem, 1180px); }
  .signal-console { border-radius: var(--radius-md); }
  .console-readout { grid-template-columns: 1fr; margin-top: .5rem; }
  .route-grid, .access-matrix, .protocol-grid, .fault-grid, .safety-beacons, .method-grid { grid-template-columns: 1fr; }
  .dial-list article { grid-template-columns: 1fr; }
  .prompt-cassette { grid-template-columns: 1fr; }
  .prompt-cassette span { border-bottom: 0; }
  .contact-radar { min-height: 260px; border-radius: var(--radius-lg); }
}