/*
 * RMe / СИЗ 2 visual contract
 * Concept: «Контур контроля» — industrial precision with calm graphite surfaces,
 * cobalt actions and safety signals reserved for decisions and state changes.
 */
:root {
  color-scheme: dark;

  /* Core palette: keep these values stable across every component. */
  --graphite-950: #0B0F17;
  --graphite-900: #0F172A;
  --graphite-850: #131C2B;
  --graphite-800: #1E293B;
  --cobalt: #2563EB;
  --cobalt-bright: #3B82F6;
  --safety-amber: #F59E0B;
  --safety-red: #EF4444;
  --status-ok: #22C55E;
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-on-accent: #08111F;

  /* Shared surfaces, borders and light gradients. */
  --line: rgba(148, 163, 184, .2);
  --line-soft: rgba(148, 163, 184, .12);
  --line-strong: rgba(148, 163, 184, .34);
  --surface-glass: rgba(15, 23, 42, .72);
  --surface-glass-strong: rgba(15, 23, 42, .92);
  --gradient-cobalt: linear-gradient(135deg, #2563EB 0%, #3B82F6 100%);
  --gradient-safety: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
  --gradient-light: radial-gradient(circle at 68% 24%, rgba(59, 130, 246, .2), transparent 29%), radial-gradient(circle at 82% 74%, rgba(245, 158, 11, .1), transparent 24%);

  /* Type roles: display is for hierarchy, body is for sustained reading. */
  --font-display: "Arial Narrow", "Aptos Display", system-ui, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", sans-serif;

  --page-x: clamp(1.25rem, 5vw, 5.5rem);
  --section-y: clamp(4.75rem, 9vw, 8.5rem);
  --content-width: 90rem;
  --radius-sm: .28rem;
  --radius-md: .6rem;
  --radius-lg: 1rem;
  --focus-ring: 0 0 0 3px var(--graphite-950), 0 0 0 5px var(--safety-amber);
}

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

html {
  scroll-behavior: smooth;
  background: var(--graphite-950);
}

body {
  min-width: 18rem;
  margin: 0;
  color: var(--text-primary);
  background: var(--graphite-950);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

::selection {
  color: var(--text-on-accent);
  background: var(--safety-amber);
}

button,
input,
textarea {
  color: inherit;
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  text-wrap: balance;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Keyboard access remains visible even on transparent, dark controls. */
.skip-link {
  position: fixed;
  z-index: 100;
  top: 1rem;
  left: 1rem;
  padding: .7rem 1rem;
  color: var(--text-on-accent);
  background: var(--safety-amber);
  font-weight: 800;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform .2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

/* Header and navigation */
.site-header {
  position: absolute;
  z-index: 20;
  top: 0;
  left: 0;
  width: 100%;
  height: 4.8rem;
  padding: 0 var(--page-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-primary);
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(11, 15, 23, .94), rgba(11, 15, 23, .28));
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--text-primary);
  font: 600 1.12rem/1 var(--font-display);
  letter-spacing: -.055em;
  text-decoration: none;
}

.brand sup {
  color: var(--safety-amber);
  font-size: .63em;
  vertical-align: top;
}

.brand-mark {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, .45rem);
  gap: .2rem;
  width: 1.1rem;
  height: 1.4rem;
  transform: skew(-14deg);
}

.brand-mark i {
  display: block;
  background: var(--cobalt-bright);
}

.brand-mark i:last-child {
  background: var(--safety-amber);
}

.menu-toggle {
  display: flex;
  align-items: center;
  gap: .65rem;
  min-height: 2.75rem;
  padding: .6rem 0;
  color: var(--text-primary);
  background: transparent;
  border: 0;
  font-size: .66rem;
  font-weight: 800;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.menu-toggle__icon,
.menu-toggle__icon::after {
  display: block;
  width: 1.5rem;
  height: 2px;
  background: var(--safety-amber);
  transition: transform .25s ease, background-color .25s ease;
}

.menu-toggle__icon::after {
  content: "";
  transform: translateY(.42rem);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon {
  transform: translateY(.2rem) rotate(45deg);
  background: var(--cobalt-bright);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon::after {
  transform: rotate(-90deg);
  background: var(--cobalt-bright);
}

.site-nav {
  position: fixed;
  z-index: 19;
  inset: 4.8rem 0 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  padding: 1.35rem var(--page-x) 2rem;
  overflow-y: auto;
  background: var(--surface-glass-strong);
  border-top: 1px solid var(--line-soft);
  backdrop-filter: blur(1.25rem);
  transform: translateX(100%);
  visibility: hidden;
  transition: transform .35s cubic-bezier(.76, 0, .24, 1), visibility .35s ease;
}

.site-nav.is-open {
  transform: translateX(0);
  visibility: visible;
}

.site-nav a {
  position: relative;
  display: block;
  padding: 1.1rem 0;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--line-soft);
  font: 500 1.05rem/1.3 var(--font-display);
  letter-spacing: -.03em;
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease;
}

.site-nav a:hover {
  color: var(--text-primary);
  border-color: var(--cobalt-bright);
}

.header-contact {
  margin-top: 1rem;
  padding: .85rem 1rem !important;
  color: var(--text-primary) !important;
  border: 1px solid rgba(59, 130, 246, .55) !important;
  border-radius: var(--radius-sm);
  background: rgba(37, 99, 235, .14);
  font: 700 .7rem/1 var(--font-body) !important;
  letter-spacing: .1em !important;
  text-align: center;
  text-transform: uppercase;
}

/* Hero */
.hero {
  position: relative;
  min-height: 50rem;
  height: min(55rem, 100svh);
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 58% 42%;
  color: var(--text-primary);
  background:
    linear-gradient(90deg, transparent 0 calc(100% - 1px), rgba(148, 163, 184, .12) calc(100% - 1px)),
    linear-gradient(115deg, rgba(148, 163, 184, .045) 0 1px, transparent 1px 5rem),
    var(--gradient-light),
    var(--graphite-950);
  isolation: isolate;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  right: 7%;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(59, 130, 246, .48) 42%, transparent);
}

.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--safety-amber), rgba(148, 163, 184, .15) 42%, transparent);
}

.hero-noise {
  position: absolute;
  z-index: -1;
  inset: 0;
  opacity: .1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.4'/%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 2;
  align-self: end;
  max-width: 53rem;
  padding: 6.3rem var(--page-x) 1.1rem;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.35rem;
  color: var(--text-secondary);
  font-size: .63rem;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.eyebrow span {
  width: 2.2rem;
  height: .38rem;
  background: repeating-linear-gradient(90deg, var(--cobalt-bright) 0 .3rem, transparent .3rem .48rem);
}

h1 {
  max-width: 12ch;
  margin-bottom: 1.1rem;
  color: var(--text-primary);
  font: 600 clamp(2.25rem, 10vw, 3.7rem)/1.04 var(--font-display);
  letter-spacing: -.065em;
}

h1 em {
  color: var(--safety-amber);
  font-style: normal;
  text-shadow: 0 0 1.5rem rgba(245, 158, 11, .16);
}

.hero-lead {
  max-width: 37rem;
  margin-bottom: 1.45rem;
  color: var(--text-secondary);
  font-size: clamp(.9rem, 2.2vw, 1.1rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.35rem;
}

.button {
  min-height: 3.45rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: .85rem 1.2rem;
  color: var(--text-primary);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .085em;
  line-height: 1.2;
  text-decoration: none;
  text-transform: uppercase;
  transition: transform .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease, color .2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(0);
}

.button--primary {
  background: var(--gradient-cobalt);
  box-shadow: 0 .85rem 2rem rgba(37, 99, 235, .24);
}

.button--primary:hover {
  box-shadow: 0 1rem 2.3rem rgba(37, 99, 235, .35);
}

.button--accent {
  color: var(--text-on-accent);
  background: var(--gradient-safety);
  box-shadow: 0 .75rem 1.7rem rgba(245, 158, 11, .18);
}

.button--accent:hover {
  box-shadow: 0 .95rem 2rem rgba(239, 68, 68, .25);
}

.button--secondary {
  color: var(--text-primary);
  border-color: var(--line-strong);
  background: rgba(15, 23, 42, .44);
}

.button--secondary:hover {
  border-color: var(--cobalt-bright);
  background: rgba(37, 99, 235, .14);
}

.button:disabled,
.button[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: .48;
  transform: none;
}

.text-link {
  color: var(--text-primary);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .07em;
  text-decoration: underline;
  text-decoration-color: var(--cobalt-bright);
  text-decoration-thickness: 1px;
  text-underline-offset: .38rem;
  text-transform: uppercase;
}

.text-link span {
  display: inline-block;
  margin-left: .45rem;
  color: var(--safety-amber);
  transition: transform .2s ease;
}

.text-link:hover span {
  transform: translate(3px, 3px);
}

.hero-visual {
  position: relative;
  z-index: 1;
  min-width: 0;
  min-height: 0;
  border-top: 1px solid var(--line-soft);
  background:
    linear-gradient(90deg, rgba(148, 163, 184, .08) 1px, transparent 1px),
    linear-gradient(rgba(148, 163, 184, .06) 1px, transparent 1px),
    radial-gradient(circle at 58% 42%, rgba(37, 99, 235, .15), transparent 42%),
    rgba(15, 23, 42, .32);
  background-size: 4.5rem 4.5rem, 4.5rem 4.5rem, auto, auto;
  backdrop-filter: blur(.8rem);
  overflow: hidden;
}

.hero-visual::before {
  content: "";
  position: absolute;
  top: 0;
  right: var(--page-x);
  bottom: 0;
  left: var(--page-x);
  border-inline: 1px solid rgba(148, 163, 184, .08);
  pointer-events: none;
}

.hero-visual::after {
  content: "";
  position: absolute;
  z-index: 0;
  top: 16%;
  right: 0;
  width: 4rem;
  height: 1px;
  background: var(--safety-amber);
  box-shadow: 0 8rem 0 rgba(59, 130, 246, .65), 0 16rem 0 rgba(239, 68, 68, .45);
}

.helmet {
  position: absolute;
  z-index: 1;
  top: 48%;
  left: 54%;
  width: min(80vw, 24rem);
  aspect-ratio: 1.2;
  transform: translate(-50%, -42%) rotate(-8deg);
  filter: drop-shadow(1.6rem 2.3rem 2rem rgba(0, 0, 0, .45));
  animation: helmet-float 7s ease-in-out infinite;
}

.helmet__shell {
  position: absolute;
  inset: 8% 8% 24% 8%;
  border-radius: 48% 52% 18% 22% / 72% 73% 24% 22%;
  background:
    radial-gradient(circle at 66% 22%, rgba(255, 255, 255, .58), transparent 7%),
    linear-gradient(118deg, #9A5C05 0%, #F59E0B 38%, #FBBF24 60%, #B45309 100%);
  box-shadow: inset -2rem -2rem 2rem rgba(72, 38, 0, .26), inset 1rem 1rem 1.2rem rgba(255, 255, 255, .15);
  clip-path: polygon(4% 100%, 5% 50%, 14% 24%, 32% 8%, 56% 0, 78% 10%, 95% 33%, 100% 100%);
}

.helmet__shell::after {
  content: "";
  position: absolute;
  right: 8%;
  bottom: 7%;
  left: 11%;
  height: 12%;
  border-top: .28rem solid rgba(72, 38, 0, .48);
  border-radius: 50%;
}

.helmet__ridge {
  position: absolute;
  z-index: 2;
  top: 3%;
  left: 46%;
  width: 11%;
  height: 64%;
  border-radius: 48% 52% 22% 18%;
  background: linear-gradient(90deg, #B45309, #FCD34D 52%, #92400E);
  transform: skew(-4deg);
  box-shadow: inset .2rem 0 .3rem rgba(255, 255, 255, .24);
}

.helmet__brim {
  position: absolute;
  z-index: 3;
  right: 0;
  bottom: 18%;
  left: 1%;
  height: 13%;
  border-radius: 80% 30% 48% 54%;
  background: linear-gradient(178deg, #FBBF24 0 38%, #B45309 41% 70%, #78350F 100%);
  clip-path: polygon(2% 20%, 86% 5%, 100% 42%, 95% 72%, 21% 100%, 0 65%);
}

.helmet__stamp {
  position: absolute;
  z-index: 4;
  bottom: 33%;
  left: 25%;
  color: rgba(72, 38, 0, .72);
  font: 700 clamp(.75rem, 1.4vw, 1.2rem)/1 var(--font-display);
  letter-spacing: -.05em;
}

.signal-line {
  position: absolute;
  z-index: 0;
  width: 150%;
  height: 3.8rem;
  background: repeating-linear-gradient(135deg, var(--safety-amber) 0 2rem, var(--graphite-950) 2rem 4rem);
  opacity: .7;
}

.signal-line--one {
  top: 34%;
  left: -10%;
  transform: rotate(-17deg);
}

.signal-line--two {
  bottom: 18%;
  left: -20%;
  height: 1.2rem;
  background: repeating-linear-gradient(135deg, var(--cobalt-bright) 0 2rem, var(--graphite-950) 2rem 4rem);
  opacity: .42;
  transform: rotate(13deg);
}

.visual-caption {
  position: absolute;
  z-index: 3;
  right: var(--page-x);
  bottom: 1.2rem;
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  min-width: 11rem;
  padding: .8rem .9rem;
  color: var(--text-secondary);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  background: var(--surface-glass);
  box-shadow: 0 1rem 2.5rem rgba(0, 0, 0, .2);
  backdrop-filter: blur(1rem);
  font-size: .6rem;
  font-weight: 800;
  letter-spacing: .08em;
  line-height: 1.5;
  text-transform: uppercase;
}

.visual-caption::before {
  content: "";
  flex: 0 0 .42rem;
  width: .42rem;
  height: .42rem;
  margin-top: .28rem;
  border-radius: 50%;
  background: var(--status-ok);
  box-shadow: 0 0 .6rem rgba(34, 197, 94, .7);
}

.visual-caption span {
  color: var(--safety-amber);
}

.visual-caption p {
  margin: 0;
}

.hero-index {
  position: absolute;
  z-index: 2;
  bottom: 1.15rem;
  left: var(--page-x);
  display: none;
  color: var(--text-muted);
  font: 500 .52rem/1 var(--font-display);
  letter-spacing: .16em;
}

@keyframes helmet-float {
  0%,
  100% {
    transform: translate(-50%, -42%) rotate(-8deg);
  }

  50% {
    transform: translate(-50%, -46%) rotate(-5deg);
  }
}

/* Proof bar */
.proof-strip {
  min-height: 5.7rem;
  padding: .8rem var(--page-x);
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  color: var(--text-primary);
  background: var(--graphite-900);
  border-block: 1px solid var(--line);
}

.proof-strip p {
  position: relative;
  margin: 0;
  padding: .55rem 0 .55rem 1rem;
  color: var(--text-secondary);
  font-size: .65rem;
  font-weight: 800;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.proof-strip p::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: .42rem;
  height: .42rem;
  border-radius: 50%;
  background: var(--cobalt-bright);
  box-shadow: 0 0 .7rem rgba(59, 130, 246, .75);
  transform: translateY(-50%);
}

/* Sections and shared hierarchy */
.section {
  padding: var(--section-y) var(--page-x);
}

.solutions {
  background:
    linear-gradient(90deg, rgba(148, 163, 184, .035) 1px, transparent 1px),
    linear-gradient(rgba(148, 163, 184, .028) 1px, transparent 1px),
    var(--graphite-950);
  background-size: 5rem 5rem;
}

.section-number {
  margin-bottom: 1.1rem;
  color: var(--cobalt-bright);
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.section-number--light {
  color: var(--safety-amber);
}

.section-number--accent {
  color: var(--safety-red);
}

.section-intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: .9rem;
  max-width: var(--content-width);
  margin-inline: auto;
  margin-bottom: 3.5rem;
}

.section-intro .section-number {
  margin-top: .4rem;
}

.section-intro h2,
.process h2,
.standards h2,
.request h2 {
  margin-bottom: 0;
  color: var(--text-primary);
  font: 600 clamp(2rem, 9vw, 3.15rem)/1.08 var(--font-display);
  letter-spacing: -.065em;
}

.section-intro h2 span,
.process h2 span {
  color: var(--cobalt-bright);
}

.section-intro > p:last-child {
  max-width: 30rem;
  margin: .35rem 0 0;
  color: var(--text-secondary);
  font-size: .9rem;
}

/* Direction list: rows keep the asymmetry without turning every item into a card. */
.solution-list {
  max-width: var(--content-width);
  margin-inline: auto;
  border-top: 1px solid var(--line);
}

.solution-item {
  position: relative;
  z-index: 0;
  display: grid;
  grid-template-columns: 4.15rem minmax(0, 1fr) auto;
  gap: .95rem;
  align-items: center;
  min-height: 9.8rem;
  padding: 1.35rem 0;
  color: var(--text-primary);
  border-bottom: 1px solid var(--line);
  isolation: isolate;
  overflow: hidden;
  transition: color .3s ease, padding .3s ease, border-color .3s ease;
}

.solution-item::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  background: linear-gradient(90deg, rgba(37, 99, 235, .22), rgba(15, 23, 42, .72) 55%, transparent);
  transform: translateX(-101%);
  transition: transform .4s cubic-bezier(.76, 0, .24, 1);
}

.solution-item::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--safety-amber);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform .3s ease;
}

.solution-item:hover,
.solution-item:focus-within {
  padding-inline: .85rem;
  border-color: rgba(59, 130, 246, .42);
}

.solution-item:hover::before,
.solution-item:focus-within::before {
  transform: translateX(0);
}

.solution-item:hover::after,
.solution-item:focus-within::after {
  transform: scaleY(1);
}

.solution-item > div:nth-child(2) {
  display: grid;
  grid-template-columns: 1fr;
  gap: .35rem;
  min-width: 0;
}

.solution-code {
  margin: 0 0 .2rem;
  color: var(--safety-amber);
  font-size: .6rem;
  font-weight: 800;
  letter-spacing: .12em;
}

.solution-item h3 {
  margin: 0;
  color: var(--text-primary);
  font: 600 clamp(1.05rem, 4vw, 1.65rem)/1.25 var(--font-display);
  letter-spacing: -.045em;
}

.solution-item > div:nth-child(2) > p:last-child {
  max-width: 34rem;
  margin: 0;
  color: var(--text-secondary);
  font-size: .78rem;
  line-height: 1.5;
  transition: color .3s ease;
}

.solution-item:hover > div:nth-child(2) > p:last-child,
.solution-item:focus-within > div:nth-child(2) > p:last-child {
  color: var(--text-primary);
}

.solution-arrow {
  align-self: center;
  color: var(--cobalt-bright);
  font-size: 1.15rem;
  transition: color .25s ease, transform .25s ease;
}

.solution-item:hover .solution-arrow,
.solution-item:focus-within .solution-arrow {
  color: var(--safety-amber);
  transform: translate(4px, -4px);
}

.solution-icon {
  position: relative;
  width: 4.15rem;
  height: 4.15rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, .58);
  transform: scale(.72);
  transform-origin: left center;
  transition: border-color .3s ease, background .3s ease;
}

.solution-item:hover .solution-icon,
.solution-item:focus-within .solution-icon {
  border-color: rgba(245, 158, 11, .7);
  background: rgba(37, 99, 235, .16);
}

.solution-icon::before,
.solution-icon::after,
.solution-icon i {
  content: "";
  position: absolute;
  display: block;
}

.solution-icon--head::before {
  top: 1.25rem;
  left: 1.4rem;
  width: 2.9rem;
  height: 2.2rem;
  border-radius: 2rem 2rem .3rem .3rem;
  background: var(--safety-amber);
}

.solution-icon--head::after {
  top: 3.35rem;
  left: 1rem;
  width: 3.8rem;
  height: .45rem;
  background: var(--safety-amber);
  transform: skew(-18deg);
}

.solution-icon--body::before {
  top: 1.2rem;
  left: 1.65rem;
  width: 2.5rem;
  height: 3.5rem;
  background: var(--cobalt-bright);
  clip-path: polygon(28% 0, 72% 0, 100% 24%, 77% 40%, 75% 100%, 25% 100%, 23% 40%, 0 24%);
}

.solution-icon--body::after {
  top: 1.2rem;
  left: 2.73rem;
  width: .35rem;
  height: 3.5rem;
  background: var(--graphite-950);
  opacity: .8;
}

.solution-icon--air::before {
  top: 1.7rem;
  left: 1.15rem;
  width: 3.5rem;
  height: 2.3rem;
  border: .45rem solid var(--safety-red);
  border-radius: 25% 25% 50% 50%;
}

.solution-icon--air::after {
  top: 3.6rem;
  left: 2.3rem;
  width: 1.2rem;
  height: 1.5rem;
  background: var(--safety-red);
  clip-path: polygon(0 0, 100% 0, 75% 100%, 25% 100%);
}

.solution-icon--height::before {
  top: 1.15rem;
  left: 1.15rem;
  width: 3.4rem;
  height: 3.4rem;
  border: .35rem solid var(--cobalt-bright);
  border-radius: 50%;
}

.solution-icon--height::after {
  top: .5rem;
  left: 2.7rem;
  width: .38rem;
  height: 4.8rem;
  background: var(--cobalt-bright);
  transform: rotate(43deg);
}

/* Process */
.process {
  color: var(--text-primary);
  background:
    linear-gradient(115deg, transparent 0 68%, rgba(37, 99, 235, .09) 68% 68.1%, transparent 68.1%),
    var(--graphite-900);
  border-block: 1px solid var(--line);
}

.process-heading {
  display: grid;
  grid-template-columns: 1fr;
  gap: .9rem;
  max-width: var(--content-width);
  margin: 0 auto 3.5rem;
}

.process h2 {
  max-width: 16ch;
}

.process h2 span {
  color: var(--safety-amber);
}

.process-steps {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.process-steps li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  min-height: 9rem;
  padding: 1.7rem 0;
  border-bottom: 1px solid var(--line);
}

.process-steps > li > span {
  color: var(--cobalt-bright);
  font: 600 .9rem/1 var(--font-display);
}

.process-steps div {
  display: grid;
  grid-template-columns: 1fr;
  gap: .6rem;
}

.process-steps h3 {
  margin: 0;
  color: var(--text-primary);
  font: 600 clamp(1.08rem, 4vw, 1.55rem)/1.3 var(--font-display);
  letter-spacing: -.04em;
}

.process-steps p {
  max-width: 31rem;
  margin: 0;
  color: var(--text-secondary);
  font-size: .85rem;
}

/* Standards */
.standards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
  background: var(--graphite-950);
}

.standards-graphic {
  position: relative;
  min-height: 23rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(90deg, rgba(148, 163, 184, .06) 1px, transparent 1px),
    linear-gradient(rgba(148, 163, 184, .06) 1px, transparent 1px),
    radial-gradient(circle at center, rgba(37, 99, 235, .18), transparent 54%),
    var(--surface-glass);
  background-size: 3rem 3rem, 3rem 3rem, auto, auto;
  box-shadow: 0 1.5rem 3.5rem rgba(0, 0, 0, .18);
  overflow: hidden;
}

.standards-graphic::before,
.standards-graphic::after {
  content: "";
  position: absolute;
  background: var(--line);
}

.standards-graphic::before {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
}

.standards-graphic::after {
  top: 50%;
  right: 0;
  left: 0;
  height: 1px;
}

.seal {
  position: relative;
  z-index: 2;
  width: min(18rem, 66%);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: .14rem solid var(--safety-amber);
  border-radius: 50%;
  transform: rotate(-8deg);
}

.seal::before,
.seal::after {
  content: "";
  position: absolute;
  inset: .7rem;
  border: 1px dashed var(--safety-amber);
  border-radius: 50%;
}

.seal::after {
  inset: -.55rem;
  border-style: solid;
  opacity: .24;
}

.seal__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--safety-amber);
}

.seal__inner strong {
  font: 700 clamp(1.7rem, 7vw, 3.8rem)/1 var(--font-display);
  letter-spacing: -.08em;
}

.seal__inner span {
  margin-top: .7rem;
  color: var(--text-secondary);
  font-size: .65rem;
  font-weight: 800;
  letter-spacing: .18em;
}

.measure {
  position: absolute;
  color: var(--text-muted);
  font-size: .48rem;
  font-weight: 800;
  letter-spacing: .18em;
}

.measure--x {
  top: calc(50% - 1.4rem);
  left: 1rem;
}

.measure--y {
  top: 5rem;
  right: -1.8rem;
  transform: rotate(90deg);
}

.standards-copy {
  max-width: 39rem;
}

.standards h2 {
  max-width: 11ch;
  margin-bottom: 1.6rem;
}

.standards-lead {
  max-width: 35rem;
  color: var(--text-secondary);
}

.check-list {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  display: flex;
  gap: .85rem;
  padding: .85rem 0;
  color: var(--text-primary);
  border-bottom: 1px solid var(--line);
  font-size: .82rem;
  font-weight: 700;
}

.check-list span {
  color: var(--status-ok);
}

/* Request and form controls */
.request {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  padding: var(--section-y) var(--page-x);
  color: var(--text-primary);
  background:
    var(--gradient-light),
    var(--graphite-900);
  border-top: 1px solid var(--line);
}

.request-copy,
.request-form {
  max-width: var(--content-width);
}

.request h2 {
  margin-bottom: 1.6rem;
}

.request h2 span {
  color: var(--safety-amber);
}

.request-copy > p:not(.section-number) {
  max-width: 30rem;
  color: var(--text-secondary);
}

.request-copy > a {
  display: inline-block;
  margin-top: 1rem;
  color: var(--text-primary);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-color: var(--cobalt-bright);
  text-underline-offset: .35rem;
}

.request-form {
  align-self: start;
  width: 100%;
  padding: 1.25rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--surface-glass);
  box-shadow: 0 1.5rem 3rem rgba(0, 0, 0, .2);
  backdrop-filter: blur(1rem);
}

.field {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  margin-bottom: 1.15rem;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.field label {
  color: var(--text-secondary);
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.field input,
.field textarea {
  width: 100%;
  padding: .8rem .85rem;
  color: var(--text-primary);
  background: rgba(11, 15, 23, .5);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  outline: 0;
  transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--text-muted);
}

.field input:hover,
.field textarea:hover {
  border-color: var(--line-strong);
}

.field input:focus,
.field textarea:focus {
  border-color: var(--cobalt-bright);
  background: rgba(37, 99, 235, .08);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .18);
}

.field input:focus-visible,
.field textarea:focus-visible {
  box-shadow: var(--focus-ring);
}

.field input:invalid:not(:placeholder-shown),
.field textarea:invalid:not(:placeholder-shown),
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-color: var(--safety-red);
}

.field textarea {
  min-height: 7rem;
  resize: vertical;
}

.form-footer {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.75rem;
}

.form-footer p {
  max-width: 18rem;
  margin: 0;
  color: var(--text-muted);
  font-size: .67rem;
  line-height: 1.5;
}

.form-status {
  min-height: 1.5rem;
  margin: 1rem 0 0;
  color: #86EFAC;
  font-size: .78rem;
}

/* Footer */
.site-footer {
  min-height: 11rem;
  padding: 2.7rem var(--page-x);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: center;
  color: var(--text-primary);
  background: var(--graphite-950);
  border-top: 1px solid var(--line);
}

.brand--footer {
  justify-self: start;
}

.site-footer > p {
  margin: 0;
  color: var(--text-secondary);
  font-size: .7rem;
  line-height: 1.5;
}

.footer-meta {
  justify-self: start;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .35rem;
  font-size: .72rem;
}

.footer-meta a {
  color: var(--safety-amber);
  text-underline-offset: .25rem;
}

.footer-meta span {
  color: var(--text-muted);
}

/* Reusable component primitives for the video-analytics layer. */
.glass-panel {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--surface-glass);
  box-shadow: 0 1.25rem 3rem rgba(0, 0, 0, .2);
  backdrop-filter: blur(1rem);
}

.glass-panel--strong {
  background: var(--surface-glass-strong);
}

.light-gradient {
  background-image: var(--gradient-light);
}

.gradient-cobalt {
  background: var(--gradient-cobalt);
}

.gradient-safety {
  background: var(--gradient-safety);
}

.status-indicator {
  --status-color: var(--status-ok);
  --status-surface: rgba(34, 197, 94, .12);
  --status-text: #BBF7D0;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  min-height: 1.8rem;
  padding: .35rem .6rem;
  color: var(--status-text);
  border: 1px solid color-mix(in srgb, var(--status-color) 48%, transparent);
  border-radius: var(--radius-sm);
  background: var(--status-surface);
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .1em;
  line-height: 1;
  text-transform: uppercase;
}

.status-indicator::before {
  content: "";
  width: .42rem;
  height: .42rem;
  border-radius: 50%;
  background: var(--status-color);
  box-shadow: 0 0 .6rem color-mix(in srgb, var(--status-color) 75%, transparent);
}

.status-indicator--alert,
.status-indicator[data-state="alert"] {
  --status-color: var(--safety-red);
  --status-surface: rgba(239, 68, 68, .14);
  --status-text: #FECACA;
}

.status-indicator--ok,
.status-indicator[data-state="ok"] {
  --status-color: var(--status-ok);
  --status-surface: rgba(34, 197, 94, .12);
  --status-text: #BBF7D0;
}

.tabs {
  display: flex;
  gap: .25rem;
  max-width: 100%;
  padding: .25rem;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(11, 15, 23, .58);
}

.tab {
  flex: 0 0 auto;
  min-height: 2.5rem;
  padding: .6rem .85rem;
  color: var(--text-secondary);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.tab:hover {
  color: var(--text-primary);
  border-color: var(--line-strong);
}

.tab[aria-selected="true"],
.tab.is-active {
  color: var(--text-primary);
  border-color: rgba(59, 130, 246, .65);
  background: rgba(37, 99, 235, .2);
}

.ai-overlay {
  --overlay-accent: var(--cobalt-bright);
  position: relative;
  padding: .85rem 1rem;
  color: var(--text-primary);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--overlay-accent);
  border-radius: var(--radius-md);
  background: rgba(11, 15, 23, .78);
  box-shadow: 0 .9rem 2rem rgba(0, 0, 0, .22);
  backdrop-filter: blur(1rem);
}

.ai-overlay__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .6rem;
}

.ai-overlay__label,
.ai-overlay__metric {
  color: var(--text-secondary);
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.ai-overlay__state {
  color: var(--overlay-text, #BFDBFE);
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.ai-overlay__state::before {
  content: "";
  display: inline-block;
  width: .42rem;
  height: .42rem;
  margin: 0 .4rem .05rem 0;
  border-radius: 50%;
  background: var(--overlay-accent);
  box-shadow: 0 0 .6rem var(--overlay-accent);
}

.ai-overlay--ok,
.ai-overlay[data-state="ok"] {
  --overlay-accent: var(--status-ok);
  --overlay-text: #BBF7D0;
}

.ai-overlay--alert,
.ai-overlay[data-state="alert"] {
  --overlay-accent: var(--safety-red);
  --overlay-text: #FECACA;
  background: rgba(69, 10, 10, .42);
}

/* Reveal is progressive enhancement: JS adds .is-visible, reduced motion bypasses it. */
.reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity .65s ease, transform .65s cubic-bezier(.22, 1, .36, 1);
}

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

/* Tablet and desktop layout */
@media (min-width: 48rem) {
  .site-header {
    height: 6rem;
  }

  .menu-toggle {
    display: none;
  }

  .site-nav,
  .site-nav.is-open {
    position: static;
    inset: auto;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: clamp(.8rem, 2.2vw, 2.4rem);
    padding: 0;
    overflow: visible;
    border: 0;
    background: transparent;
    backdrop-filter: none;
    transform: none;
    visibility: visible;
    transition: none;
  }

  .site-nav a,
  .site-nav a:not(.header-contact) {
    display: inline-block;
    padding: .4rem 0;
    color: var(--text-secondary);
    border: 0;
    font: 700 .63rem/1.2 var(--font-body);
    letter-spacing: .08em;
    text-transform: uppercase;
  }

  .site-nav a:not(.header-contact)::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: -.3rem;
    left: 0;
    height: 1px;
    background: var(--safety-amber);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform .25s ease;
  }

  .site-nav a:not(.header-contact):hover::after {
    transform: scaleX(1);
    transform-origin: left;
  }

  .header-contact {
    margin-top: 0;
    padding: .7rem .85rem !important;
    border: 1px solid rgba(59, 130, 246, .55) !important;
    border-radius: var(--radius-sm);
    background: rgba(37, 99, 235, .14);
  }

  .hero {
    min-height: 48rem;
    height: min(56rem, 100svh);
    grid-template-columns: minmax(0, 1.08fr) minmax(20rem, .92fr);
    grid-template-rows: 1fr;
  }

  .hero-copy {
    align-self: center;
    padding: 8rem 2rem 5rem var(--page-x);
  }

  .eyebrow {
    margin-bottom: 2rem;
    font-size: .67rem;
  }

  h1 {
    margin-bottom: 1.55rem;
    font-size: clamp(3rem, 5.3vw, 5.3rem);
  }

  .hero-lead {
    margin-bottom: 2.1rem;
    font-size: clamp(.98rem, 1.25vw, 1.12rem);
  }

  .hero-actions {
    gap: 1.5rem;
  }

  .hero-visual {
    border-top: 0;
    border-left: 1px solid var(--line-soft);
  }

  .hero-visual::before {
    left: 12%;
    border-left: 0;
    border-right: 1px solid rgba(148, 163, 184, .08);
  }

  .helmet {
    top: 50%;
    left: 49%;
    width: min(35vw, 34rem);
  }

  .visual-caption {
    right: var(--page-x);
    bottom: 3.8rem;
  }

  .hero-index {
    display: block;
  }

  .proof-strip {
    min-height: 5.7rem;
    padding: 0 var(--page-x);
    grid-template-columns: repeat(3, 1fr);
  }

  .proof-strip p {
    padding: 0 1rem 0 1.9rem;
    text-align: center;
  }

  .proof-strip p::before {
    left: 1rem;
  }

  .proof-strip p + p {
    border-left: 1px solid var(--line);
  }

  .section-intro {
    grid-template-columns: minmax(7rem, .65fr) minmax(0, 1.7fr) minmax(12rem, 1fr);
    gap: clamp(1.5rem, 4vw, 4rem);
    margin-bottom: 5rem;
  }

  .section-intro > p:last-child {
    grid-column: 3;
    margin-top: .45rem;
  }

  .section-intro h2,
  .process h2,
  .standards h2,
  .request h2 {
    font-size: clamp(2.35rem, 4.2vw, 4.2rem);
  }

  .solution-item {
    grid-template-columns: minmax(6.5rem, 16%) minmax(0, 1fr) auto;
    gap: clamp(1.25rem, 4vw, 4.5rem);
    min-height: 11.5rem;
    padding: 1.8rem 1rem;
  }

  .solution-item > div:nth-child(2) {
    grid-template-columns: minmax(12rem, .75fr) 1fr;
    gap: 2rem;
    align-items: center;
  }

  .solution-item > div:nth-child(2) > p:last-child {
    font-size: .85rem;
  }

  .solution-icon {
    width: 5.8rem;
    height: 5.8rem;
    transform: none;
  }

  .process-heading {
    grid-template-columns: 1fr 3fr;
    gap: 3rem;
    margin-bottom: 4.8rem;
  }

  .process-steps li {
    grid-template-columns: 25% 1fr;
    min-height: 9.7rem;
    padding: 2.1rem 0;
  }

  .process-steps div {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .standards {
    grid-template-columns: 1.05fr .95fr;
    gap: clamp(3rem, 8vw, 9rem);
  }

  .standards-graphic {
    min-height: 35rem;
  }

  .request {
    grid-template-columns: .85fr 1.15fr;
    gap: clamp(3rem, 8vw, 9rem);
  }

  .request-copy,
  .request-form {
    max-width: none;
  }

  .request-form {
    padding: 2rem;
  }

  .field-row {
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
  }

  .form-footer {
    align-items: center;
    flex-direction: row;
    gap: 1.4rem;
  }

  .site-footer {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
  }

  .footer-meta {
    justify-self: end;
    align-items: flex-end;
  }
}

@media (min-width: 64rem) {
  .site-nav {
    gap: clamp(1.2rem, 2.4vw, 2.75rem);
  }

  .site-nav a,
  .site-nav a:not(.header-contact) {
    font-size: .67rem;
  }

  .hero-copy {
    padding-right: 3rem;
  }

  .request-form {
    padding: 2.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}