:root {
  /* Brand palette — gray + tan */
  --charcoal: #242424;
  --charcoal-2: #323232;
  --espresso: #1a1a1a;
  --brown: #6b6b6b;
  --tan: #c7a678;
  --tan-dim: #a98d66;
  --light-tan: #e6d3b5;
  --warm-white: #f7f4ee;
  --warm-white-2: #e6d3b5;
  --white: #ffffff;
  --cyan: #27c2ff;

  /* Semantic tokens */
  --line-dark: rgba(199, 166, 120, 0.16);
  --line-dark-soft: rgba(247, 244, 238, 0.08);
  --line-light: rgba(26, 26, 26, 0.13);
  --text-dark-secondary: rgba(247, 244, 238, 0.72);
  --text-dark-muted: rgba(247, 244, 238, 0.5);

  --max-width: 1240px;
  --font: "Helvetica Neue", Arial, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--espresso);
  background: var(--warm-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }
button { font-family: inherit; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--tan);
}

.eyebrow.on-light { color: var(--tan-dim); }

/* ===== Header ===== */
header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--charcoal);
  border-bottom: 1px solid var(--line-dark);
}

header::before {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--brown), var(--tan) 40%, var(--brown) 80%);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 15px 32px;
}

.nav-logo img { height: 34px; width: auto; }
.nav-logo { text-decoration: none; display: flex; align-items: center; }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dark-secondary);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.nav-links a:hover { color: var(--warm-white); }

.nav-cta {
  background: var(--tan);
  color: var(--espresso) !important;
  padding: 11px 22px;
  text-decoration: none;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  border: 1px solid var(--tan);
  transition: all 0.15s ease;
}

.nav-cta:hover { background: var(--warm-white); border-color: var(--warm-white); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--warm-white);
}

/* ===== Hero: video flyover stage ===== */
.hero {
  position: relative;
  background: var(--charcoal);
  color: var(--warm-white);
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  padding: 168px 32px 0;
}

.hero-video {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-video-fallback {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-size: cover;
  background-position: center;
  display: none;
}

/* Dark scrim so headline stays legible regardless of footage brightness */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(36,36,36,0.86) 0%, rgba(36,36,36,0.6) 42%, rgba(36,36,36,0.28) 72%, rgba(36,36,36,0.08) 100%),
    linear-gradient(to top, rgba(36,36,36,0.55) 0%, rgba(36,36,36,0) 32%);
}

@media (prefers-reduced-motion: reduce) {
  .hero-video { display: none; }
  .hero-video-fallback { display: block; }
}

/* Shared video-background pattern, reused by Requirement / Power / Final CTA */
.section-video {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section-video-fallback {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-size: cover;
  background-position: center;
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .section-video { display: none; }
  .section-video-fallback { display: block; }
}

.hero-inner {
  position: relative;
  z-index: 3;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

.hero-content { max-width: 520px; }

.hero h1 {
  font-size: 48px;
  line-height: 1.12;
  margin: 20px 0 22px;
  font-weight: 600;
  letter-spacing: -0.3px;
  text-shadow: 0 2px 26px rgba(0,0,0,0.55);
}

.hero p.lede {
  font-size: 16.5px;
  color: var(--text-dark-secondary);
  max-width: 470px;
  margin: 0 0 36px;
  line-height: 1.7;
  text-shadow: 0 2px 18px rgba(0,0,0,0.45);
}

.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 64px; }

.btn {
  display: inline-block;
  padding: 14px 26px;
  text-decoration: none;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  border: 1px solid var(--tan);
  transition: all 0.2s ease;
}

.btn-primary { background: var(--tan); color: var(--espresso); }
.btn-primary:hover { background: var(--warm-white); border-color: var(--warm-white); }

.btn-outline { background: transparent; color: var(--warm-white); border-color: rgba(244,241,234,0.4); }
.btn-outline:hover { border-color: var(--warm-white); }

.btn-dark { background: var(--espresso); color: var(--warm-white); border-color: var(--espresso); }
.btn-dark:hover { background: var(--charcoal-2); border-color: var(--charcoal-2); }

/* ===== Generic section ===== */
section { padding: 108px 32px; }
section.tight { padding: 88px 32px; }

.section-on-dark { background: var(--charcoal-2); color: var(--warm-white); }

.section-head { max-width: 700px; margin: 0 0 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: 32px; margin: 16px 0 18px; letter-spacing: -0.2px; font-weight: 600; }
.section-head p { color: var(--brown); font-size: 16.5px; margin: 0; line-height: 1.7; }
.section-head.on-dark p { color: var(--text-dark-secondary); }

/* ===== Section 1: The Requirement ===== */
.requirement {
  position: relative;
  overflow: hidden;
  background: var(--charcoal);
  color: var(--warm-white);
  border-bottom: 1px solid var(--line-dark);
}

.requirement::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(120deg, rgba(36,36,36,0.88) 0%, rgba(36,36,36,0.66) 45%, rgba(36,36,36,0.4) 100%);
}

.requirement-grid {
  position: relative;
  z-index: 3;
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 70px;
  align-items: start;
}

.requirement-statement {
  font-size: 34px;
  line-height: 1.35;
  font-weight: 500;
  color: var(--warm-white);
  margin: 0;
  letter-spacing: -0.2px;
}

.requirement-body p {
  font-size: 16.5px;
  color: var(--text-dark-secondary);
  line-height: 1.75;
  margin: 0 0 18px;
}

/* ===== Section 2: Capabilities ===== */
.capabilities { background: var(--warm-white); }

.cap-list {
  max-width: var(--max-width);
  margin: 0 auto;
  border-top: 1px solid var(--line-light);
}

.cap-row {
  display: grid;
  grid-template-columns: 70px 260px 1fr;
  gap: 40px;
  padding: 34px 0;
  border-bottom: 1px solid var(--line-light);
  align-items: baseline;
}

.cap-row .idx {
  font-size: 13px;
  font-weight: 700;
  color: var(--tan-dim);
  letter-spacing: 1px;
  font-variant-numeric: tabular-nums;
}

.cap-row h3 {
  font-size: 19px;
  margin: 0;
  font-weight: 600;
  color: var(--espresso);
}

.cap-row p {
  font-size: 15.5px;
  color: var(--brown);
  margin: 0;
  line-height: 1.7;
  max-width: 560px;
}

/* ===== Section 3: Network (video background) ===== */
.network {
  position: relative;
  overflow: hidden;
  background: var(--charcoal);
  color: var(--warm-white);
  padding: 140px 32px;
}

.network::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(36,36,36,0.82) 0%, rgba(36,36,36,0.5) 45%, rgba(36,36,36,0.72) 100%);
}

.network-inner { position: relative; z-index: 3; max-width: var(--max-width); margin: 0 auto; }

.network-head { max-width: 640px; margin: 0 auto 24px; text-align: center; }
.network-head h2 { font-size: 32px; margin: 16px 0 0; font-weight: 600; }

.network-caption {
  max-width: 640px;
  margin: 24px auto 0;
  text-align: center;
  font-size: 13.5px;
  color: var(--text-dark-muted);
  line-height: 1.6;
}

/* ===== Section 4: Power Generation ===== */
.power {
  position: relative;
  overflow: hidden;
  background: var(--charcoal);
  color: var(--warm-white);
}

.power::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(100deg, rgba(36,36,36,0.86) 0%, rgba(36,36,36,0.56) 50%, rgba(36,36,36,0.3) 100%);
}

.power-grid {
  position: relative;
  z-index: 3;
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 70px;
  align-items: center;
}

.power-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(39,194,255,0.35);
  padding: 6px 12px;
  margin-bottom: 22px;
}

.power-copy h2 { font-size: 34px; margin: 0 0 20px; font-weight: 600; line-height: 1.25; color: var(--warm-white); }
.power-copy p { font-size: 16px; color: var(--text-dark-secondary); line-height: 1.75; margin: 0 0 16px; }

.power-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--line-dark);
}

.power-list li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line-dark);
  font-size: 15px;
  color: var(--warm-white);
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.power-list li .mark { color: var(--cyan); font-weight: 700; }

/* ===== Section 5: Government ===== */
.gov { background: var(--charcoal-2); color: var(--warm-white); }

.gov-inner {
  max-width: 840px;
  margin: 0 auto;
}

.gov-inner p {
  font-size: 17px;
  color: var(--text-dark-secondary);
  line-height: 1.8;
  margin: 0 0 20px;
}

.gov-inner p:last-child { margin-bottom: 0; }

/* ===== Section 6: How IPT Works =====
   Cyan marks the live/active state as the sequence plays — the one
   moment on the page besides the hero where something is "live." */
.workflow { background: var(--warm-white); }

.workflow-track {
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  padding-top: 10px;
}

.workflow-line {
  position: absolute;
  top: 15px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--line-light);
}

.workflow-line-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: var(--cyan);
  transition: width 1.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
  position: relative;
}

.wf-step { position: relative; padding-top: 34px; }

.wf-step .dot {
  position: absolute;
  top: 8px;
  left: 0;
  width: 15px;
  height: 15px;
  border: 2px solid var(--tan-dim);
  background: var(--warm-white);
  transform: rotate(45deg);
  transition: border-color 0.4s ease, background 0.4s ease;
}

.wf-step.is-active .dot { border-color: var(--cyan); background: var(--cyan); }

.wf-step .wf-idx {
  font-size: 11px;
  color: var(--tan-dim);
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.wf-step h4 { font-size: 15px; margin: 0; font-weight: 600; color: var(--espresso); line-height: 1.4; }

/* ===== Section 7: Final CTA — compact top band, video left open below ===== */
.final-cta {
  position: relative;
  overflow: hidden;
  background: var(--charcoal);
  color: var(--warm-white);
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  padding: 140px 32px 0;
}

.final-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(36,36,36,0.82) 0%, rgba(36,36,36,0.45) 55%, rgba(36,36,36,0.08) 100%);
}

.final-cta-inner { position: relative; z-index: 3; max-width: var(--max-width); margin: 0 auto; width: 100%; }

.final-cta-top-compact {
  max-width: 760px;
  margin: 0 0 28px;
}

.final-cta-top-compact h2 {
  font-size: 34px;
  margin: 14px 0 12px;
  font-weight: 600;
  letter-spacing: -0.3px;
}

.final-cta-top-compact p {
  font-size: 15.5px;
  color: var(--text-dark-secondary);
  line-height: 1.7;
  max-width: 640px;
  margin: 0;
}

.final-cta-top-compact p a {
  color: var(--tan);
  font-weight: 600;
  text-decoration: none;
}

.final-cta-top-compact p a:hover { text-decoration: underline; }

form.req-form-compact { max-width: 980px; }

.form-row-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.form-row-tail {
  display: grid;
  grid-template-columns: 180px 1fr 200px;
  gap: 14px;
  align-items: end;
}

.req-form label {
  display: block;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 6px;
  color: var(--text-dark-muted);
}

.req-form input,
.req-form select,
.req-form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line-dark);
  background: rgba(20,20,20,0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  font-family: inherit;
  font-size: 14px;
  margin-bottom: 14px;
  color: var(--warm-white);
}

.req-form input:focus,
.req-form select:focus,
.req-form textarea:focus {
  outline: none;
  border-color: var(--cyan); /* active-input state — the "live" accent, not brand tan */
}

.req-form textarea { resize: vertical; min-height: 42px; }

.req-form button {
  width: 100%;
  padding: 11px;
  background: var(--tan);
  color: var(--espresso);
  border: none;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 12px;
  cursor: pointer;
}

.req-form button:hover { background: var(--warm-white); }

.form-note { font-size: 11.5px; color: var(--text-dark-muted); margin-top: 2px; }

/* ===== Footer ===== */
footer {
  background: var(--charcoal);
  color: var(--text-dark-muted);
  padding: 44px 32px 26px;
  border-top: 1px solid var(--line-dark);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line-dark-soft);
}

.footer-logo-chip {
  background: var(--warm-white);
  padding: 9px 14px;
  display: inline-flex;
}

.footer-logo-chip img { height: 26px; width: auto; }

.footer-links { display: flex; gap: 26px; list-style: none; padding: 0; margin: 0; font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.6px; }
footer a { color: var(--text-dark-secondary); text-decoration: none; }
footer a:hover { color: var(--tan); }

.footer-copy {
  max-width: var(--max-width);
  margin: 0 auto;
  font-size: 12px;
  padding-top: 18px;
  color: rgba(247,244,238,0.35);
}

/* ===== Scroll reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

.reveal-stagger.is-visible > * { opacity: 1; transform: translateY(0); }
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-stagger > *:nth-child(1) { transition-delay: 0.03s; }
.reveal-stagger > *:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger > *:nth-child(3) { transition-delay: 0.17s; }
.reveal-stagger > *:nth-child(4) { transition-delay: 0.24s; }
.reveal-stagger > *:nth-child(5) { transition-delay: 0.31s; }
.reveal-stagger > *:nth-child(6) { transition-delay: 0.38s; }

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .hero h1 { font-size: 36px; }
  .hero { min-height: 92vh; padding-top: 140px; }
  .requirement-grid, .power-grid { grid-template-columns: 1fr; gap: 36px; }
  .cap-row { grid-template-columns: 50px 1fr; }
  .cap-row h3 { grid-column: 2; }
  .cap-row p { grid-column: 2; }
  .workflow-steps { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
  .workflow-line, .workflow-line-fill { display: none; }
  .final-cta { padding-top: 120px; }
  .final-cta-top-compact h2 { font-size: 28px; }
  .form-row-4 { grid-template-columns: 1fr 1fr; }
  .form-row-tail { grid-template-columns: 1fr; align-items: stretch; }
}

@media (max-width: 640px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    background: var(--charcoal);
    padding: 20px 32px;
    border-bottom: 1px solid var(--line-dark);
    gap: 18px;
  }
  .nav-cta.open { display: inline-block; margin: 0 32px 20px; text-align: center; }
  .hero { min-height: 86vh; padding-top: 120px; }
  .hero h1 { font-size: 29px; }
  .hero-buttons { flex-direction: column; }
  .btn { text-align: center; }
  section { padding: 76px 24px; }
  .requirement-statement { font-size: 26px; }
  .workflow-steps { grid-template-columns: 1fr 1fr; }
  .form-row-4 { grid-template-columns: 1fr; }
  .final-cta { min-height: auto; padding-bottom: 60px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .network { padding: 96px 24px; }
}