/* ==========================================================================
   Metronova Scintific Research — Design System
   Concept: "Engineering Blueprint" — schematic line-work, spec-sheet type,
   dimension-line dividers. Built token-first, no framework.
   ========================================================================== */

/* Fonts are loaded via a <link> tag in <head> for parallel discovery
   (avoids the request waterfall an @import here would cause). */

/* -- Tokens ----------------------------------------------------------------*/
:root {
  /* color */
  --ink: #0b1120;
  --ink-soft: #131c30;
  --ink-line: rgba(255, 255, 255, 0.12);
  --ink-line-soft: rgba(255, 255, 255, 0.07);

  --blueprint: #145da0;
  --blueprint-deep: #0b3d75;
  --signal: #3e92ff;
  --signal-soft: rgba(62, 146, 255, 0.12);

  --amber: #ff7a29;
  --amber-deep: #e85d0b;
  --amber-soft: rgba(255, 122, 41, 0.12);

  --paper: #f3f5f8;
  --paper-alt: #e8ecf1;
  --white: #ffffff;

  --graphite: #10151f;
  --slate: #56606e;
  --slate-soft: #8891a0;
  --line: rgba(16, 21, 31, 0.1);
  --line-soft: rgba(16, 21, 31, 0.06);

  /* type */
  --font-display: 'Space Grotesk', 'IBM Plex Sans', sans-serif;
  --font-body: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  /* spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  /* radius */
  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 24px;

  /* shadow */
  --shadow-sm: 0 2px 10px rgba(11, 17, 32, 0.06);
  --shadow-md: 0 16px 40px rgba(11, 17, 32, 0.1);
  --shadow-lg: 0 30px 70px rgba(11, 17, 32, 0.18);

  /* motion */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 150ms;
  --dur-base: 260ms;
  --dur-slow: 500ms;

  /* layout */
  --header-h: 84px;
  --container-w: 1240px;
}

/* -- Reset ------------------------------------------------------------------*/
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--graphite);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

button {
  font: inherit;
  cursor: pointer;
}

h1,
h2,
h3,
h4,
h5 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-4);
  color: var(--graphite);
}

h1 { font-size: clamp(2.5rem, 4.4vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(2rem, 3.2vw, 2.75rem); }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }

p {
  margin: 0 0 var(--space-4);
  color: var(--slate);
  max-width: 62ch;
}

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

/* -- Utilities ---------------------------------------------------------------*/
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -60px;
  background: var(--ink);
  color: var(--white);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  z-index: 2000;
  transition: top var(--dur-base) var(--ease);
}

.skip-link:focus-visible {
  top: var(--space-4);
}

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
  border-radius: 4px;
}

.section {
  padding: var(--space-10) 0;
  position: relative;
}

.section--tight { padding: var(--space-9) 0; }

.section--dark {
  background: var(--ink);
  color: var(--white);
}

.section--dark p { color: rgba(255, 255, 255, 0.68); }
.section--dark h2,
.section--dark h3,
.section--dark h4 { color: var(--white); }

.section--alt { background: var(--white); }

.section-head {
  max-width: 46rem;
  margin: 0 0 var(--space-8);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
}

.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head p { font-size: 1.1rem; }
.section-head--center p { margin-left: auto; margin-right: auto; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blueprint);
  margin-bottom: var(--space-4);
}

.section--dark .eyebrow,
.eyebrow--light { color: var(--signal); }

.eyebrow::before {
  content: '';
  width: 18px;
  height: 1px;
  background: currentColor;
  display: inline-block;
}

/* dimension-line divider between sections, styled like a technical drawing */
.divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  color: var(--slate);
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--line);
  background-image: repeating-linear-gradient(
    to right,
    var(--line) 0,
    var(--line) 1px,
    transparent 1px,
    transparent 8px
  );
}

.divider__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* -- Buttons -----------------------------------------------------------------*/
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.95rem 1.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--amber);
  color: var(--ink);
  box-shadow: 0 10px 24px rgba(255, 122, 41, 0.28);
}

.btn--primary:hover {
  background: var(--amber-deep);
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(255, 122, 41, 0.34);
}

.btn--ghost {
  background: transparent;
  color: var(--graphite);
  border-color: var(--line);
}

.btn--ghost:hover {
  border-color: var(--blueprint);
  color: var(--blueprint);
  transform: translateY(-2px);
}

.section--dark .btn--ghost {
  color: var(--white);
  border-color: var(--ink-line);
}

.section--dark .btn--ghost:hover {
  border-color: var(--signal);
  color: var(--signal);
}

.btn--ghost-invert {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn--ghost-invert:hover {
  border-color: var(--white);
  transform: translateY(-2px);
}

.btn--dark {
  background: var(--ink);
  color: var(--white);
}

.btn--dark:hover {
  background: var(--blueprint-deep);
  transform: translateY(-2px);
}

.btn--block { width: 100%; }
.btn[disabled] { opacity: 0.6; cursor: not-allowed; transform: none !important; }

/* -- Header / Nav ------------------------------------------------------------*/
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(243, 245, 248, 0.86);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line-soft);
  transition: background var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
}

.site-header.is-scrolled {
  background: rgba(243, 245, 248, 0.97);
  box-shadow: var(--shadow-sm);
}

.site-header.is-open {
  background: rgba(243, 245, 248, 0.98);
  box-shadow: var(--shadow-md);
}

.nav__backdrop {
  display: none;
}

.nav {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.nav__brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav__logo {
  height: 64px;
  width: auto;
  display: block;
}

.nav__mark { width: 40px; height: 40px; flex-shrink: 0; }

.nav__word { display: flex; flex-direction: column; line-height: 1.05; }
.nav__word span:last-child {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-7);
  list-style: none;
}

.nav__menu a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--graphite);
  position: relative;
  padding: var(--space-2) 0;
  transition: color var(--dur-fast) var(--ease);
}

.nav__menu a:not(.btn)::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease);
}

.nav__menu a:not(.btn):hover { color: var(--blueprint); }
.nav__menu a:not(.btn):hover::after { transform: scaleX(1); }

.nav__menu a:not(.btn).is-active { color: var(--blueprint); }
.nav__menu a:not(.btn).is-active::after { transform: scaleX(1); background: var(--blueprint); }

/* Mobile-only CTA inside the slide-down menu — hidden on desktop */
.nav__menu-cta { display: none; }

.nav__actions { display: flex; align-items: center; gap: var(--space-5); }

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  padding: 0;
  flex-shrink: 0;
}

.nav__toggle span {
  width: 100%;
  height: 2px;
  background: var(--graphite);
  border-radius: 1px;
  transition: transform var(--dur-base) var(--ease), opacity var(--dur-base) var(--ease);
}

.nav__toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-active span:nth-child(2) { opacity: 0; }
.nav__toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* -- Hero --------------------------------------------------------------------*/
.hero {
  position: relative;
  background: var(--ink);
  color: var(--white);
  padding: calc(var(--header-h) + var(--space-9)) 0 var(--space-9);
  overflow: hidden;
  isolation: isolate;
}

/* drifting blueprint grid */
.hero::before {
  content: '';
  position: absolute;
  inset: -48px;
  z-index: 0;
  background-image:
    linear-gradient(var(--ink-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-line-soft) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 85% 65% at 50% 25%, black 35%, transparent 92%);
  opacity: 0.65;
  animation: hero-grid-drift 36s linear infinite;
  will-change: transform;
}

/* ambient glow + scan sweep */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 55% 45% at 18% 28%, rgba(62, 146, 255, 0.18), transparent 62%),
    radial-gradient(ellipse 50% 40% at 82% 68%, rgba(255, 122, 41, 0.12), transparent 58%),
    radial-gradient(ellipse 70% 55% at 50% 105%, rgba(20, 93, 160, 0.22), transparent 68%);
  animation: hero-glow-pulse 14s ease-in-out infinite alternate;
}

@keyframes hero-grid-drift {
  from { transform: translate(0, 0); }
  to { transform: translate(48px, 48px); }
}

@keyframes hero-glow-pulse {
  0% { opacity: 0.55; transform: scale(1) translateY(0); }
  100% { opacity: 0.95; transform: scale(1.04) translateY(-12px); }
}

.hero__scan {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.hero__scan::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(62, 146, 255, 0.04) 35%,
    rgba(62, 146, 255, 0.1) 50%,
    rgba(62, 146, 255, 0.04) 65%,
    transparent 100%
  );
  animation: hero-scan-sweep 10s ease-in-out infinite;
}

@keyframes hero-scan-sweep {
  0% { top: -140px; opacity: 0; }
  8% { opacity: 1; }
  92% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .hero::before,
  .hero::after,
  .hero__scan::before {
    animation: none;
  }
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-8);
  align-items: center;
}

.hero__eyebrow { color: var(--signal); }

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--white);
  margin-bottom: var(--space-5);
}

.hero__title em {
  font-style: normal;
  font-weight: 700;
  color: var(--signal);
  background: linear-gradient(120deg, var(--signal), var(--amber));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__lede {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.72);
  max-width: 34rem;
  margin-bottom: var(--space-7);
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero__figure {
  position: relative;
  perspective: 1000px;
}

.hero__figure .schematic {
  transform: translate3d(calc(var(--px, 0) * 1px), calc(var(--py, 0) * 1px), 0)
    rotate(calc(var(--pr, 0) * 1deg));
  transition: transform 0.45s var(--ease);
  will-change: transform;
}

.hero__figure.is-active .schematic {
  transition: transform 0.12s var(--ease);
}

.schematic-tip {
  position: absolute;
  z-index: 5;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  background: rgba(11, 17, 32, 0.92);
  border: 1px solid var(--signal);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.schematic-tip.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.schematic { width: 100%; height: auto; overflow: visible; cursor: crosshair; }

.schematic__orbit {
  transition: stroke var(--dur-base) var(--ease), transform var(--dur-slow) var(--ease);
  transform-origin: 280px 280px;
}

.hero__figure.is-active .schematic__orbit {
  stroke: rgba(62, 146, 255, 0.35);
}

.schematic__gear {
  transform-origin: center;
  transform-box: fill-box;
  animation: schematic-gear-idle 28s linear infinite;
}

.hero__figure.is-active .schematic__gear {
  animation-duration: 5s;
}

.schematic__housing {
  transition: stroke var(--dur-base) var(--ease), filter var(--dur-base) var(--ease);
}

.hero__figure.is-active .schematic__housing {
  stroke: #5aafff;
  filter: drop-shadow(0 0 8px rgba(62, 146, 255, 0.35));
}

.schematic__hotspot {
  cursor: pointer;
}

.schematic__hotspot:focus-visible {
  outline: none;
}

.schematic__hotspot:focus-visible .hotspot__dot {
  stroke: var(--amber);
}

.schematic__hotspot .hotspot__hit {
  fill: transparent;
  stroke: none;
  pointer-events: all;
}

.schematic__hotspot .hotspot__pulse {
  fill: none;
  stroke: var(--signal);
  stroke-width: 1;
  opacity: 0;
  transform-origin: center;
  transform-box: fill-box;
  transition: opacity var(--dur-fast) var(--ease);
}

.schematic__hotspot .hotspot__dot {
  transition: fill var(--dur-fast) var(--ease), stroke var(--dur-fast) var(--ease),
    transform var(--dur-fast) var(--ease);
  transform-origin: center;
  transform-box: fill-box;
}

.schematic__hotspot:hover .hotspot__dot,
.schematic__hotspot:focus-visible .hotspot__dot,
.schematic__hotspot.is-active .hotspot__dot {
  fill: var(--signal);
  stroke: var(--amber);
  transform: scale(1.35);
}

.schematic__hotspot--core:hover .hotspot__dot,
.schematic__hotspot--core:focus-visible .hotspot__dot,
.schematic__hotspot--core.is-active .hotspot__dot {
  fill: var(--amber);
  stroke: var(--white);
}

.schematic__hotspot:hover .hotspot__pulse,
.schematic__hotspot:focus-visible .hotspot__pulse,
.schematic__hotspot.is-active .hotspot__pulse {
  opacity: 0.85;
  animation: hotspot-ping 1.4s ease-out infinite;
}

@keyframes schematic-gear-idle {
  to { transform: rotate(360deg); }
}

@keyframes hotspot-ping {
  0% { transform: scale(0.6); opacity: 0.9; }
  100% { transform: scale(1.6); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .hero__figure .schematic { transition: none; transform: none !important; }
  .schematic__gear { animation: none; }
  .schematic__hotspot:hover .hotspot__pulse,
  .schematic__hotspot.is-active .hotspot__pulse { animation: none; opacity: 0.5; }
}

.schematic .draw {
  fill: none;
  stroke: var(--signal);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.schematic .draw--thick { stroke-width: 2.4; }
.schematic .draw--amber { stroke: var(--amber); }
.schematic .draw--dim { stroke: rgba(255, 255, 255, 0.3); stroke-width: 1.2; }

.schematic .orbit {
  fill: none;
  stroke: rgba(255, 255, 255, 0.14);
  stroke-width: 1;
  stroke-dasharray: 2 8;
  transform-origin: center;
  animation: spin 90s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .schematic .orbit { animation: none; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.schematic .anno {
  font-family: var(--font-mono);
  font-size: 10px;
  fill: rgba(255, 255, 255, 0.55);
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease);
}

.schematic .anno.is-visible { opacity: 1; }

.schematic .node {
  fill: var(--ink);
  stroke: var(--signal);
  stroke-width: 2;
  opacity: 0;
  transform-origin: center;
  transition: opacity var(--dur-base) var(--ease);
}

.schematic .node.is-visible { opacity: 1; }

.schematic .gear-fill { fill: var(--amber); opacity: 0.9; }

/* -- Snapshot strip ------------------------------------------------------------*/
.snapshot {
  background: var(--ink-soft);
  color: var(--white);
  border-top: 1px solid var(--ink-line);
}

.snapshot__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.snapshot__item {
  padding: var(--space-7) var(--space-6);
  border-left: 1px solid var(--ink-line);
}

.snapshot__item:first-child { border-left: none; }

.snapshot__value {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 500;
  color: var(--signal);
  display: block;
  margin-bottom: var(--space-2);
}

.snapshot__label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.4;
}

/* -- Card grids ----------------------------------------------------------------*/
.card-grid {
  display: grid;
  gap: var(--space-6);
}

.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: transform var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease),
    border-color var(--dur-base) var(--ease);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.card__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--blueprint);
  background: var(--signal-soft);
  padding: 0.3rem 0.6rem;
  border-radius: 100px;
}

.card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--paper-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blueprint);
  margin-bottom: var(--space-5);
}

.card__icon .icon { width: 24px; height: 24px; }

.card h3 { margin-bottom: var(--space-3); font-size: 1.25rem; }

.card p { font-size: 0.95rem; margin-bottom: var(--space-4); flex-grow: 1; }

.card__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: auto;
}

.card__list li {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  font-size: 0.88rem;
  color: var(--slate);
}

.card__list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--amber);
  flex-shrink: 0;
  transform: translateY(-1px);
}

/* -- Icon base -------------------------------------------------------------- */
.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.icon-badge .icon { width: 22px; height: 22px; }

/* -- Charter (numbered manifesto) -------------------------------------------- */
.charter { display: flex; flex-direction: column; }

.charter__item {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: var(--space-6);
  padding: var(--space-7) 0;
  border-top: 1px solid var(--line);
}

.charter__item:last-child { border-bottom: 1px solid var(--line); }

.charter__num {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 500;
  color: var(--line);
  -webkit-text-stroke: 1px var(--slate-soft);
  line-height: 1;
}

.charter__body h3 { margin-bottom: var(--space-2); font-size: 1.2rem; }
.charter__body p { margin-bottom: 0; }

/* -- Capability list (Solutions page) -----------------------------------------*/
.capability-list { display: flex; flex-direction: column; }

.capability {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: var(--space-6);
  padding: var(--space-8) 0;
  border-top: 1px solid var(--line);
}

.capability:last-child { border-bottom: 1px solid var(--line); }

.capability__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--paper-alt);
  color: var(--blueprint);
  display: flex;
  align-items: center;
  justify-content: center;
}

.capability__icon .icon { width: 26px; height: 26px; }

.capability__head {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.capability__head h3 { margin: 0; }

.capability__body { display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--space-6); align-items: start; }
.capability__body p { margin-bottom: 0; }

.capability__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.capability__list li {
  display: flex;
  gap: var(--space-2);
  font-size: 0.9rem;
  color: var(--slate);
  align-items: baseline;
}

.capability__list li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--amber);
  flex-shrink: 0;
  transform: translateY(-1px);
}

/* -- Process strip ------------------------------------------------------------*/
.process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-3);
  counter-reset: step;
}

.process__step {
  position: relative;
  padding: var(--space-6) var(--space-4) var(--space-4);
  border-top: 2px solid var(--line);
}

.process__step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: -14px;
  left: 0;
  background: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--amber);
  padding-right: var(--space-2);
}

.process__step h3 { font-size: 1rem; margin-bottom: var(--space-2); }
.process__step p { font-size: 0.88rem; margin-bottom: 0; }

/* -- Industries preview / values grid ----------------------------------------*/
.chip-grid { display: flex; flex-wrap: wrap; gap: var(--space-3); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border: 1px solid var(--line);
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
    transform var(--dur-fast) var(--ease);
}

.chip:hover { border-color: var(--blueprint); color: var(--blueprint); transform: translateY(-2px); }

.chip .mono { color: var(--slate-soft); font-size: 0.75rem; }

.section--dark .chip {
  border-color: var(--ink-line);
  color: var(--white);
}

.section--dark .chip .mono { color: var(--signal); }

.section--dark .chip:hover {
  border-color: var(--signal);
  color: var(--signal);
}

/* -- Mission / values -----------------------------------------------------*/
.value-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6) var(--space-8);
}

.value-item { display: flex; gap: var(--space-4); }

.value-item .icon-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--signal-soft);
  color: var(--blueprint);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.value-item h3 { margin-bottom: var(--space-2); font-size: 1.1rem; }
.value-item p { margin-bottom: 0; font-size: 0.92rem; }

/* -- CTA band -----------------------------------------------------------------*/
.cta-band {
  background: var(--ink);
  color: var(--white);
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--ink-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-line-soft) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 90% 120% at 0% 50%, black 15%, transparent 72%);
  opacity: 0.75;
  pointer-events: none;
}

.cta-band::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(118deg, rgba(11, 61, 117, 0.72) 0%, transparent 52%),
    radial-gradient(circle at 100% 0%, rgba(62, 146, 255, 0.24) 0%, transparent 48%),
    radial-gradient(circle at 0% 100%, rgba(255, 122, 41, 0.14) 0%, transparent 42%);
  pointer-events: none;
}

.cta-band__text { position: relative; z-index: 1; max-width: 34rem; }
.cta-band__text h2 { color: var(--white); margin-bottom: var(--space-2); }
.cta-band__text p { color: rgba(255, 255, 255, 0.74); margin-bottom: 0; }
.cta-band__actions { position: relative; z-index: 1; display: flex; gap: var(--space-4); flex-wrap: wrap; }

.cta-band .btn--primary {
  background: var(--amber);
  color: var(--ink);
  border-color: transparent;
  box-shadow: 0 10px 28px rgba(255, 122, 41, 0.38);
}

.cta-band .btn--primary:hover {
  background: #ff9147;
  color: var(--ink);
  box-shadow: 0 14px 34px rgba(255, 122, 41, 0.45);
}

.cta-band .btn--ghost-invert {
  color: rgba(255, 255, 255, 0.92);
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.05);
}

.cta-band .btn--ghost-invert:hover {
  color: var(--white);
  border-color: var(--signal);
  background: rgba(62, 146, 255, 0.14);
}

/* -- Footer ---------------------------------------------------------------- */
.site-footer {
  position: relative;
  background: var(--ink);
  color: rgba(255, 255, 255, 0.78);
  padding: var(--space-9) 0 var(--space-5);
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--ink-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-line-soft) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 70%);
  opacity: 0.5;
  pointer-events: none;
}

.footer__main {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.4fr 2fr 1fr;
  gap: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--ink-line);
}

.footer__identity { max-width: 22rem; }

.footer__brand-link { display: inline-block; margin-bottom: var(--space-5); }

.footer__logo {
  height: 120px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
  opacity: 0.95;
}

.footer__mark {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  color: var(--white);
}

.footer__mark svg { width: 44px; height: 44px; flex-shrink: 0; }

.footer__name {
  display: flex;
  flex-direction: column;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  line-height: 1.05;
}

.footer__name span:last-child {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 0.15rem;
}

.footer__desc {
  font-size: 0.92rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.62);
  margin: 0 0 var(--space-5);
  max-width: none;
}

.footer__social { display: flex; gap: var(--space-3); }

.footer__social a {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--ink-line);
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}

.footer__social a:hover {
  border-color: var(--signal);
  color: var(--signal);
  background: rgba(62, 146, 255, 0.12);
  transform: translateY(-2px);
}

.footer__social .icon { width: 18px; height: 18px; stroke-width: 1.8; }

.footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.footer__col ul { display: flex; flex-direction: column; gap: var(--space-3); list-style: none; }

.footer__heading {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: var(--space-4);
}

.footer__col a {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.72);
  transition: color var(--dur-fast) var(--ease);
}

.footer__col a:hover { color: var(--white); }

.footer__contact {
  padding: var(--space-5);
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
}

.footer__contact .footer__heading { margin-bottom: var(--space-3); }

.footer__contact address {
  font-style: normal;
  font-size: 0.88rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.62);
  margin-bottom: var(--space-4);
}

.footer__contact ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  list-style: none;
}

.footer__contact a {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.85);
  transition: color var(--dur-fast) var(--ease);
}

.footer__contact a:hover { color: var(--signal); }

.footer__bar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-5);
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.45);
}

.footer__bar p { margin: 0; color: inherit; max-width: none; }

.footer__legal { display: flex; gap: var(--space-5); }

.footer__legal a {
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--dur-fast) var(--ease);
}

.footer__legal a:hover { color: var(--signal); }

/* -- Contact page ------------------------------------------------------------*/
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-9);
  align-items: start;
}

.form { display: flex; flex-direction: column; gap: var(--space-5); }

.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }

.form__field { display: flex; flex-direction: column; gap: var(--space-2); }

.form__field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--graphite);
  display: flex;
  gap: var(--space-1);
}

.form__field .req { color: var(--amber-deep); }

.form__field input,
.form__field select,
.form__field textarea {
  font: inherit;
  font-family: var(--font-body);
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--graphite);
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}

.form__field input:focus,
.form__field select:focus,
.form__field textarea:focus {
  border-color: var(--blueprint);
  box-shadow: 0 0 0 3px var(--signal-soft);
  outline: none;
}

.form__field textarea { resize: vertical; min-height: 130px; }

.form__hint { font-size: 0.78rem; color: var(--slate-soft); }

.form__error {
  font-size: 0.8rem;
  color: var(--amber-deep);
  display: none;
}

.form__field.has-error input,
.form__field.has-error select,
.form__field.has-error textarea { border-color: var(--amber-deep); }

.form__field.has-error .form__error { display: block; }

.form__status {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  display: none;
}

.form__status.is-visible { display: block; }
.form__status--success { background: rgba(62, 146, 255, 0.1); color: var(--blueprint-deep); }
.form__status--error { background: var(--amber-soft); color: var(--amber-deep); }

.contact-cards { display: flex; flex-direction: column; gap: var(--space-5); }

.contact-cards--grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  max-width: 920px;
  margin: 0 auto;
}

.contact-card {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-6);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
  min-height: 140px;
  align-items: flex-start;
}

.contact-card .icon-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--paper-alt);
  color: var(--blueprint);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-card h3 { margin-bottom: var(--space-1); font-size: 1rem; }
.contact-card p { margin-bottom: 0; font-size: 0.92rem; }

/* -- Legal pages ---------------------------------------------------------------*/
.legal-hero {
  background: var(--ink);
  color: var(--white);
  padding: calc(var(--header-h) + var(--space-8)) 0 var(--space-8);
  text-align: center;
}

.legal-hero__inner {
  max-width: 44rem;
  margin: 0 auto;
}

.legal-hero p { color: rgba(255, 255, 255, 0.72); font-size: 1.05rem; margin-bottom: 0; max-width: none; }

.legal-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--white);
}

.legal-doc {
  max-width: 52rem;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-7);
  box-shadow: var(--shadow-sm);
}

.legal-doc p,
.legal-doc li {
  color: var(--slate);
  font-size: 1rem;
  line-height: 1.7;
  max-width: none;
}

.legal__meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--slate-soft);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--line);
}

.legal-doc h2 {
  font-size: 1.2rem;
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--line);
  color: var(--graphite);
}

.legal-doc h2:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.legal-doc ul,
.legal-doc ol {
  margin: var(--space-4) 0 var(--space-5);
  padding-left: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.legal-doc strong { color: var(--graphite); }

.legal-doc a {
  color: var(--blueprint);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal-doc a:hover { color: var(--blueprint-deep); }

/* -- Page hero (non-home pages) -------------------------------------------- */
.page-hero {
  background: var(--ink);
  color: var(--white);
  padding: calc(var(--header-h) + var(--space-8)) 0 var(--space-8);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--ink-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-line-soft) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 20% 0%, black 30%, transparent 85%);
  opacity: 0.6;
}

.page-hero .page-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-w);
}

.page-hero .page-hero__inner .eyebrow,
.page-hero .page-hero__inner h1,
.page-hero .page-hero__inner p {
  max-width: 44rem;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--white);
}

.page-hero p { color: rgba(255, 255, 255, 0.72); font-size: 1.05rem; margin-bottom: 0; }

.section-cta {
  display: flex;
  justify-content: center;
  margin-top: var(--space-2);
  max-width: none;
  width: 100%;
}

/* -- Reveal-on-scroll ---------------------------------------------------------*/
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

/* -- Responsive ----------------------------------------------------------------*/
@media (max-width: 1080px) {
  .hero__inner,
  .two-col { grid-template-columns: 1fr; }
  .hero__figure { max-width: 420px; margin: 0 auto; }
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .card-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .footer__main { grid-template-columns: 1fr 1fr; }
  .footer__identity { grid-column: 1 / -1; max-width: none; }
  .process { grid-template-columns: repeat(3, 1fr); row-gap: var(--space-7); }
}

@media (max-width: 900px) {
  .nav__toggle { display: flex; }
  .nav__actions .btn { display: none; }

  .nav__backdrop {
    display: block;
    position: fixed;
    inset: 0;
    top: var(--header-h);
    background: rgba(11, 17, 32, 0.42);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.38s var(--ease), visibility 0.38s var(--ease);
    z-index: 0;
  }

  .site-header.is-open .nav__backdrop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav__menu {
    display: flex;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    z-index: 1;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: var(--space-3) var(--space-5) var(--space-6);
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    background: var(--paper);
    border-top: 1px solid var(--line-soft);
    box-shadow: 0 24px 48px rgba(11, 17, 32, 0.14);
    transform: translateY(-16px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      transform 0.42s cubic-bezier(0.22, 1, 0.36, 1),
      opacity 0.32s var(--ease),
      visibility 0.32s var(--ease);
  }

  .site-header.is-open .nav__menu {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav__menu li {
    opacity: 0;
    transform: translateY(-8px);
    transition:
      opacity 0.32s var(--ease),
      transform 0.38s cubic-bezier(0.22, 1, 0.36, 1);
  }

  .site-header.is-open .nav__menu li {
    opacity: 1;
    transform: translateY(0);
  }

  .site-header.is-open .nav__menu li:nth-child(1) { transition-delay: 0.04s; }
  .site-header.is-open .nav__menu li:nth-child(2) { transition-delay: 0.08s; }
  .site-header.is-open .nav__menu li:nth-child(3) { transition-delay: 0.12s; }
  .site-header.is-open .nav__menu li:nth-child(4) { transition-delay: 0.16s; }
  .site-header.is-open .nav__menu li:nth-child(5) { transition-delay: 0.2s; }
  .site-header.is-open .nav__menu li:nth-child(6) { transition-delay: 0.24s; }

  .site-header:not(.is-open) .nav__menu li {
    transition-delay: 0s;
  }

  .nav__menu a:not(.btn) {
    display: flex;
    align-items: center;
    width: 100%;
    min-height: 48px;
    padding: var(--space-3) var(--space-4);
    font-size: 1.05rem;
    border-radius: var(--radius-sm);
    transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
  }

  .nav__menu a:not(.btn)::after {
    display: none;
  }

  .nav__menu a:not(.btn):active,
  .nav__menu a:not(.btn):hover {
    background: var(--white);
    color: var(--blueprint);
  }

  .nav__menu a:not(.btn).is-active {
    background: var(--signal-soft);
    color: var(--blueprint);
    font-weight: 600;
  }

  .nav__menu-cta {
    display: block;
    opacity: 0;
    transform: translateY(-8px);
    transition:
      opacity 0.32s var(--ease),
      transform 0.38s cubic-bezier(0.22, 1, 0.36, 1);
    margin-top: var(--space-3);
    padding-top: var(--space-3);
    border-top: 1px solid var(--line);
  }

  .site-header.is-open .nav__menu-cta {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.28s;
  }

  .site-header:not(.is-open) .nav__menu-cta {
    transition-delay: 0s;
  }

  .nav__menu-cta .btn {
    width: 100%;
    justify-content: center;
    min-height: 48px;
  }

  body.nav-open {
    overflow: hidden;
    touch-action: none;
  }

  @media (prefers-reduced-motion: reduce) {
    .nav__backdrop,
    .nav__menu,
    .nav__menu li,
    .nav__menu-cta {
      transition: none;
    }

    .nav__menu {
      transform: none;
    }

    .nav__menu li,
    .nav__menu-cta {
      opacity: 1;
      transform: none;
    }
  }

  .legal-doc { padding: var(--space-6) var(--space-5); }

  .contact-cards--grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .cta-band { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 720px) {
  .container { padding: 0 var(--space-5); }
  .section { padding: var(--space-8) 0; }
  h1 { font-size: clamp(2.1rem, 8vw, 2.8rem); }
  h2 { font-size: 1.8rem; }

  .nav__logo { height: 52px; }
  .footer__logo { height: 88px; }

  .footer__main { grid-template-columns: 1fr; gap: var(--space-6); }
  .footer__nav { grid-template-columns: 1fr 1fr; }
  .footer__bar { flex-direction: column; align-items: flex-start; }

  .card-grid--4,
  .card-grid--3,
  .card-grid--2 { grid-template-columns: 1fr; }

  .process { grid-template-columns: 1fr; }
  .charter__item { grid-template-columns: 1fr; gap: var(--space-3); }
  .capability { grid-template-columns: 1fr; gap: var(--space-4); }
  .capability__body { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .cta-band { padding: var(--space-6); }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-4); }
  .hero { padding-top: calc(var(--header-h) + var(--space-7)); }
  .hero__actions .btn,
  .cta-band__actions .btn { width: 100%; }
  .footer__nav { grid-template-columns: 1fr; }
}
