/* ============================================================
   PORTER/COLLINS — Grid Schematic / Engineering Blueprint
   Pure CSS, no build step, no preprocessor.
   Fonts: Inter Tight + JetBrains Mono via Google Fonts.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter+Tight:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --navy-950: #020610;
  --navy-900: #050B16;
  --navy-800: #0A1424;
  --navy-700: #11192C;
  --navy-600: #1B2942;
  --navy-500: #2A3B5C;
  --navy-400: #3D5278;
  --accent: #F97316;
  --accent-dim: #EA580C;
  --accent-bright: #FB923C;
  --signal: #38BDF8;
  --ink: #E8ECF4;
  --ink-muted: #8B9CB7;
  --ink-dim: #5A6B86;
  --font-sans: 'Inter Tight', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
}

html {
  scroll-behavior: smooth;
  background: var(--navy-900);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: #cbd5e1;
  background: var(--navy-900);
}

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  color: white;
  line-height: 0.95;
  text-wrap: balance;
}

p { text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
::selection { background: rgba(249,115,22,.3); color: white; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* --- Utilities --- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (min-width: 640px) { .container { padding: 0 40px; } }
@media (min-width: 1024px) { .container { padding: 0 64px; } }

.accent { color: var(--accent); }
.ink-muted { color: var(--ink-muted); }
.ink-dim { color: var(--ink-dim); }
.white { color: white; }
.bold { font-weight: 600; color: white; }

/* --- Mono Label ([ 01 ] SECTION NAME ────) --- */
.mono-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
}
.mono-label::after {
  content: '';
  height: 1px;
  flex: 1;
  max-width: 160px;
  background: var(--navy-600);
}
@media (max-width: 639px) { .mono-label::after { display: none; } }

.mono-label-dim {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--navy-400);
}

.mono-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--navy-400);
}

/* --- Buttons --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--navy-950);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  padding: 16px 28px;
  border: none;
  cursor: pointer;
  transition: background 200ms;
}
.btn-primary:hover { background: var(--accent-bright); }
.btn-primary::before { content: '['; }
.btn-primary::after { content: ']'; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #e2e8f0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  padding: 16px 28px;
  border: 1px solid var(--navy-500);
  cursor: pointer;
  transition: all 200ms;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* --- Schematic Card --- */
.card {
  position: relative;
  border: 1px solid var(--navy-600);
  background: rgba(10,20,36,.4);
  padding: 28px;
  transition: border-color 200ms;
}
.card:hover { border-color: var(--navy-500); }

/* Crosshair corners */
.card::before, .card::after,
.card .corner-bl, .card .corner-br {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  color: var(--navy-500);
  pointer-events: none;
}
.card::before { content: '+'; top: -6px; left: -6px; }
.card::after { content: '+'; top: -6px; right: -6px; }
.card .corner-bl { bottom: -6px; left: -6px; }
.card .corner-br { bottom: -6px; right: -6px; }
.card .corner-bl::before, .card .corner-br::before { content: '+'; }

/* --- Section Heading --- */
.section-title {
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  margin-top: 24px;
}

.section-lede {
  font-size: 18px;
  line-height: 1.7;
  color: #cbd5e1;
  max-width: 720px;
  margin-top: 24px;
}
@media (min-width: 640px) { .section-lede { font-size: 20px; } }

/* --- Grid Background --- */
.grid-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 35%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 35%, transparent 100%);
}
.grid-bg.medium {
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 72px 72px;
}

/* --- Frequency line (hero scanner) --- */
.freq-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  overflow: hidden;
  pointer-events: none;
}
.freq-line::after {
  content: '';
  position: absolute;
  inset: 0;
  width: 33%;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: scan 8s linear infinite;
}

/* --- Stat readout --- */
.stat {
  position: relative;
  border: 1px solid var(--navy-600);
  background: rgba(10,20,36,.3);
  padding: 28px;
}
.stat::before { content: '+'; position: absolute; top: -6px; left: -6px; font-family: var(--font-mono); font-size: 14px; color: var(--navy-500); pointer-events: none; }
.stat::after { content: '+'; position: absolute; top: -6px; right: -6px; font-family: var(--font-mono); font-size: 14px; color: var(--navy-500); pointer-events: none; }

.stat-index {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.stat-value {
  font-family: var(--font-sans);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 0.92;
  color: white;
  margin-top: 16px;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 14px;
  line-height: 1.5;
  color: #cbd5e1;
  margin-top: 12px;
}

.stat-rule { width: 48px; height: 1px; background: var(--navy-500); margin-top: 20px; }

/* --- Animations --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes scan {
  from { transform: translateX(-100%); }
  to { transform: translateX(300%); }
}
@keyframes pulse {
  0%, 100% { opacity: .4; }
  50% { opacity: 1; }
}

.reveal {
  opacity: 0;
  animation: fadeUp 700ms cubic-bezier(.16, 1, .3, 1) forwards;
}
.reveal-1 { animation-delay: 0ms; }
.reveal-2 { animation-delay: 120ms; }
.reveal-3 { animation-delay: 240ms; }
.reveal-4 { animation-delay: 360ms; }
.reveal-5 { animation-delay: 480ms; }

.pulse-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s cubic-bezier(.4,0,.6,1) infinite;
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; animation: none !important; }
  .freq-line::after { animation: none !important; opacity: .3; }
  .pulse-dot { animation: none !important; opacity: .7; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --- Sections --- */
section {
  position: relative;
  overflow: hidden;
  padding: 112px 0;
  border-top: 1px solid var(--navy-600);
}

/* --- Layout helpers --- */
.grid-2 { display: grid; gap: 0; }
.grid-3 { display: grid; gap: 0; }
@media (min-width: 768px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr 1fr; }
}

.cols-7-5 { display: grid; gap: 48px; }
@media (min-width: 1024px) {
  .cols-7-5 { grid-template-columns: 7fr 5fr; gap: 80px; }
}

.flex-ctas {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 48px;
}
@media (min-width: 640px) {
  .flex-ctas { flex-direction: row; align-items: center; }
}

.body-text { max-width: 720px; }
.body-text p { margin-top: 20px; }
.body-text p:first-child { margin-top: 0; }

.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
.mt-12 { margin-top: 48px; }
.mt-16 { margin-top: 64px; }
.mt-20 { margin-top: 80px; }

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  background: transparent;
  transition: all 300ms;
}
.nav.scrolled {
  border-bottom-color: rgba(27,41,66,.7);
  background: rgba(2,6,16,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-brand .pc-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--navy-400);
}
.nav-brand .wordmark {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: white;
}
.nav-links {
  display: none;
  list-style: none;
  gap: 36px;
}
@media (min-width: 1024px) { .nav-links { display: flex; } }
.nav-links a {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #94a3b8;
  transition: color 200ms;
}
.nav-links a:hover { color: var(--accent); }
.nav-cta { display: none; }
@media (min-width: 1024px) { .nav-cta { display: block; } }

/* Mobile menu toggle */
.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  color: white;
  cursor: pointer;
}
@media (min-width: 1024px) { .nav-toggle { display: none; } }
.mobile-menu {
  display: none;
  background: var(--navy-950);
  border-top: 1px solid rgba(27,41,66,.7);
  padding: 24px;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 12px 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #e2e8f0;
}
.mobile-menu a:hover { color: var(--accent); }

/* --- Hero --- */
.hero {
  background: var(--navy-950);
  padding-top: 160px;
  padding-bottom: 0;
  border-top: none;
}
@media (min-width: 640px) { .hero { padding-top: 180px; } }

.hero-title {
  font-size: clamp(2.8rem, 8vw, 6rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 0.92;
  color: white;
  margin-top: 40px;
  max-width: 1100px;
}

.hero-sub {
  max-width: 640px;
  font-size: 18px;
  line-height: 1.7;
  color: #cbd5e1;
  margin-top: 40px;
}
@media (min-width: 640px) { .hero-sub { font-size: 20px; } }

.hero-stats {
  margin-top: 96px;
}
@media (min-width: 1024px) { .hero-stats { margin-top: 128px; } }

/* --- Blockquote --- */
.schematic-quote {
  border-left: 2px solid var(--accent);
  padding-left: 32px;
  max-width: 860px;
}
@media (min-width: 640px) { .schematic-quote { padding-left: 48px; } }
.schematic-quote blockquote {
  font-family: var(--font-sans);
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: white;
  margin-top: 20px;
}
.schematic-quote .attribution {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--navy-400);
  margin-top: 24px;
}

/* --- Capacity guarantee badge --- */
.guarantee-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(249,115,22,.4);
  background: rgba(249,115,22,.1);
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-bright);
  margin-top: 32px;
}

/* --- Benefit list (partnership) --- */
.benefit-list {
  list-style: none;
}
.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--navy-600);
}
.benefit-item:last-child { border-bottom: none; }
.benefit-code {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  padding-top: 2px;
  flex-shrink: 0;
}
.benefit-text { font-size: 15px; line-height: 1.5; color: white; }
.benefit-tag { font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.18em; color: var(--navy-400); margin-top: 6px; }

/* --- Markets marginalia --- */
.markets-bar {
  border-left: 1px solid rgba(249,115,22,.6);
  padding-left: 24px;
  margin-top: 48px;
}
.markets-bar .mono-label { margin-bottom: 12px; }
.markets-bar p {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #94a3b8;
}

/* --- Chart container --- */
.chart-box {
  position: relative;
  border: 1px solid var(--navy-600);
  background: rgba(2,6,16,.6);
  padding: 24px;
  margin-top: 64px;
}
@media (min-width: 640px) { .chart-box { padding: 40px; } }
.chart-box::before { content: '+'; position: absolute; top: -6px; left: -6px; font-family: var(--font-mono); font-size: 14px; color: var(--navy-500); pointer-events: none; }
.chart-box::after { content: '+'; position: absolute; top: -6px; right: -6px; font-family: var(--font-mono); font-size: 14px; color: var(--navy-500); pointer-events: none; }

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 40px;
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #94a3b8;
}
.chart-legend span {
  display: flex;
  align-items: center;
  gap: 10px;
}
.legend-orange { display: inline-block; width: 24px; height: 3px; background: var(--accent); }
.legend-cyan { display: inline-block; width: 24px; height: 3px; background: var(--signal); }
.legend-window { display: inline-block; width: 24px; height: 12px; border: 1px dashed rgba(249,115,22,.7); background: rgba(249,115,22,.1); }

/* --- CTA Band --- */
.cta-band {
  position: relative;
  border: 1px solid var(--navy-500);
  background: var(--navy-950);
  padding: 40px;
  margin-top: 96px;
  overflow: hidden;
}
@media (min-width: 640px) { .cta-band { padding: 56px; } }
.cta-band::before { content: '+'; position: absolute; top: -6px; left: -6px; font-family: var(--font-mono); font-size: 14px; color: var(--accent); pointer-events: none; }
.cta-band::after { content: '+'; position: absolute; top: -6px; right: -6px; font-family: var(--font-mono); font-size: 14px; color: var(--accent); pointer-events: none; }
.cta-band-grid {
  display: grid;
  gap: 32px;
}
@media (min-width: 1024px) {
  .cta-band-grid { grid-template-columns: 2fr 1fr; align-items: center; }
}

/* --- Footer --- */
footer {
  border-top: 1px solid var(--navy-600);
  background: var(--navy-950);
  padding: 80px 0;
}
.footer-grid {
  display: grid;
  gap: 48px;
}
@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: 5fr 4fr 3fr; gap: 64px; }
}
.footer-nav { list-style: none; }
.footer-nav li { margin-top: 12px; }
.footer-nav a {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #cbd5e1;
  transition: color 200ms;
}
.footer-nav a:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--navy-600);
  margin-top: 80px;
  padding-top: 32px;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--navy-400);
}
@media (min-width: 640px) {
  .footer-bottom { flex-direction: row; justify-content: space-between; }
}

/* --- Contact page specifics --- */
.contact-hero {
  background: var(--navy-950);
  padding-top: 160px;
  padding-bottom: 96px;
  border-top: none;
}
@media (min-width: 640px) { .contact-hero { padding-top: 190px; padding-bottom: 128px; } }

.contact-card {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  border: 1px solid var(--navy-500);
  background: var(--navy-950);
  padding: 40px;
  text-align: center;
}
@media (min-width: 640px) { .contact-card { padding: 56px; } }
.contact-card::before { content: '+'; position: absolute; top: -6px; left: -6px; font-family: var(--font-mono); font-size: 14px; color: var(--accent); pointer-events: none; }
.contact-card::after { content: '+'; position: absolute; top: -6px; right: -6px; font-family: var(--font-mono); font-size: 14px; color: var(--accent); pointer-events: none; }

/* ============================================================== */
/* --- Additions for consortium / models / principals / cookie --- */
/* ============================================================== */

/* --- Consortium band (Partnership section intro) --- */
.consortium-band {
  position: relative;
  border: 1px solid var(--navy-600);
  background: rgba(5, 11, 22, .55);
  padding: 40px 32px;
}
.consortium-band::before { content: '+'; position: absolute; top: -6px; left: -6px; font-family: var(--font-mono); font-size: 14px; color: var(--accent); pointer-events: none; }
.consortium-band::after { content: '+'; position: absolute; top: -6px; right: -6px; font-family: var(--font-mono); font-size: 14px; color: var(--accent); pointer-events: none; }

.consortium-lede {
  margin-top: 20px;
  max-width: 920px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink);
}

.consortium-stats {
  display: grid;
  gap: 0;
  margin-top: 40px;
}
@media (min-width: 768px) {
  .consortium-stats { grid-template-columns: 1fr 1fr 1fr; }
}

/* --- Commercial models block --- */
.models-title {
  font-family: var(--font-sans);
  font-size: clamp(1.4rem, 3.2vw, 1.85rem);
  font-weight: 600;
  line-height: 1.2;
  margin-top: 20px;
  color: white;
}
.models-lede {
  max-width: 820px;
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-muted);
}
.model-title {
  font-family: var(--font-sans);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.2;
  margin-top: 18px;
  color: white;
}
.model-body {
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-muted);
}

/* --- Principals grid (Sustainability section) --- */
.principals-grid {
  display: grid;
  gap: 0;
}
@media (min-width: 768px) {
  .principals-grid { grid-template-columns: 1fr 1fr; }
}

.principal {
  position: relative;
  border: 1px solid var(--navy-600);
  background: rgba(5, 11, 22, .45);
  padding: 32px;
}
.principal::before { content: '+'; position: absolute; top: -6px; left: -6px; font-family: var(--font-mono); font-size: 14px; color: var(--navy-500); pointer-events: none; }
.principal::after { content: '+'; position: absolute; top: -6px; right: -6px; font-family: var(--font-mono); font-size: 14px; color: var(--navy-500); pointer-events: none; }

.principal-mono {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
}
.principal-name {
  font-family: var(--font-sans);
  font-size: 1.35rem;
  font-weight: 600;
  margin-top: 16px;
  color: white;
}
.principal-role {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-top: 6px;
  color: var(--ink-muted);
}
.principal-bio {
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-muted);
}

/* --- Cookie banner --- */
.cookie-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  border-top: 1px solid var(--navy-600);
  background: rgba(2, 6, 16, .95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 16px 0;
}
.cookie-banner[hidden] { display: none; }
.cookie-inner {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
}
@media (min-width: 768px) {
  .cookie-inner { flex-direction: row; align-items: center; justify-content: space-between; gap: 24px; }
}
.cookie-text {
  flex: 1;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-muted);
  margin: 0;
}
.cookie-link {
  margin-left: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms;
}
.cookie-link:hover { border-bottom-color: var(--accent); }