/* R&Co. Engineering Consulting — blueprint / systems design direction */
body.eng-site {
  --eng-ink: #07111f;
  --eng-panel: #0d1a2b;
  --eng-panel-2: #12243a;
  --eng-card: #f7fbff;
  --eng-copy: #26384f;
  --eng-muted: #6d7e91;
  --eng-line: rgba(93, 189, 255, 0.22);
  --eng-blue: #1f6fb8;
  --eng-cyan: #5dbdff;
  --eng-lime: #9af4d3;
  --eng-paper: #f4f9ff;
  background:
    radial-gradient(900px 520px at 0% 0%, rgba(93, 189, 255, 0.18), transparent 58%),
    radial-gradient(700px 420px at 100% 8%, rgba(154, 244, 211, 0.12), transparent 62%),
    linear-gradient(180deg, #07111f 0%, #0b1727 44%, #f4f9ff 44%, #edf4fb 100%);
  color: var(--eng-ink);
}

body.eng-site::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(93, 189, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(93, 189, 255, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(154, 244, 211, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(154, 244, 211, 0.045) 1px, transparent 1px);
  background-size: 44px 44px, 44px 44px, 176px 176px, 176px 176px;
  mask-image: linear-gradient(180deg, #000 0%, #000 48%, transparent 82%);
}

body.eng-site::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(120deg, transparent 0 18%, rgba(93, 189, 255, 0.1) 18.1% 18.35%, transparent 18.45%),
    linear-gradient(32deg, transparent 0 64%, rgba(154, 244, 211, 0.1) 64.1% 64.32%, transparent 64.4%);
}

.eng-site .site-header,
.eng-site .site-header.is-scrolled {
  background: rgba(7, 17, 31, 0.88);
  border-bottom-color: rgba(93, 189, 255, 0.24);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.eng-site .site-header__brand-divider {
  border-left-color: rgba(93, 189, 255, 0.28);
}

.eng-site .site-header__brand-divider .mono,
.eng-site .site-header__cta .mono,
.eng-site .nav-link {
  color: rgba(244, 249, 255, 0.78);
}

.eng-site .site-header__logo {
  filter: invert(1) brightness(2.6);
}

.eng-site .btn-outline {
  color: var(--eng-paper);
  border-color: rgba(93, 189, 255, 0.62);
}

.eng-site .btn-outline:hover {
  background: var(--eng-cyan);
  color: #07111f;
}

.eng-current {
  color: var(--eng-cyan) !important;
}

.eng-current::after {
  background: var(--eng-cyan) !important;
  width: 60% !important;
}

.eng-main {
  padding-top: 78px;
}

.eng-tabs {
  position: sticky;
  top: 78px;
  z-index: 44;
  background: rgba(7, 17, 31, 0.94);
  border-top: 1px solid rgba(93, 189, 255, 0.12);
  border-bottom: 1px solid rgba(93, 189, 255, 0.26);
  box-shadow: 0 18px 58px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.eng-tabs__inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  padding: 14px 0;
}

.eng-tab {
  position: relative;
  min-height: 78px;
  padding: 15px 18px;
  overflow: hidden;
  border: 1px solid rgba(93, 189, 255, 0.22);
  background:
    linear-gradient(135deg, rgba(93, 189, 255, 0.14), transparent 42%),
    linear-gradient(180deg, #102138 0%, #0a1423 100%);
  color: var(--eng-paper);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.eng-tab::after {
  content: "";
  position: absolute;
  right: 14px;
  bottom: 13px;
  width: 42px;
  height: 1px;
  background: var(--eng-cyan);
  opacity: 0.58;
}

.eng-tab:hover {
  transform: translateY(-2px);
  border-color: rgba(154, 244, 211, 0.62);
  box-shadow: 0 16px 38px rgba(93, 189, 255, 0.16);
}

.eng-tab span {
  display: block;
  font-family: var(--serif);
  font-size: clamp(18px, 2vw, 25px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.eng-tab small {
  display: block;
  margin-top: 7px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(154, 244, 211, 0.66);
}

.eng-hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 84px;
  color: var(--eng-paper);
  border-bottom: 1px solid rgba(93, 189, 255, 0.26);
}

.eng-hero::before {
  content: "SYSTEMS / NETWORKS / SECURITY";
  position: absolute;
  right: -18px;
  bottom: 18px;
  font-family: var(--mono);
  font-size: clamp(42px, 9vw, 132px);
  letter-spacing: 0.12em;
  color: rgba(93, 189, 255, 0.045);
  white-space: nowrap;
  pointer-events: none;
}

.eng-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 1.08fr);
  gap: 58px;
  align-items: center;
}

.eng-kicker {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--eng-cyan);
}

.eng-title {
  margin: 0;
  max-width: 860px;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(44px, 6vw, 86px);
  line-height: 0.96;
  letter-spacing: -0.04em;
}

.eng-lead {
  max-width: 710px;
  margin: 26px 0 0;
  color: rgba(244, 249, 255, 0.76);
  font-size: 17px;
  line-height: 1.72;
}

.eng-hero__actions,
.eng-cta div {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.eng-btn {
  display: inline-flex;
  align-items: center;
  padding: 14px 20px;
  border: 1px solid rgba(93, 189, 255, 0.7);
  background: linear-gradient(135deg, var(--eng-cyan), #2b82cc);
  color: #07111f;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  box-shadow: 0 12px 28px rgba(93, 189, 255, 0.18);
  clip-path: polygon(0 0, calc(100% - 13px) 0, 100% 13px, 100% 100%, 0 100%);
}

.eng-btn--ghost {
  background: transparent;
  color: inherit;
  border-color: rgba(93, 189, 255, 0.42);
  box-shadow: none;
}

.eng-hero__media {
  display: grid;
  grid-template-columns: 1fr 38%;
  grid-template-rows: 56% 44%;
  gap: 12px;
  min-height: 500px;
}

.eng-shot {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(93, 189, 255, 0.35);
  background: var(--eng-panel);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
}

.eng-shot::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(7, 17, 31, 0.02), rgba(7, 17, 31, 0.42)),
    repeating-linear-gradient(0deg, rgba(93, 189, 255, 0.09) 0 1px, transparent 1px 7px);
  mix-blend-mode: screen;
}

.eng-shot--main {
  grid-row: 1 / -1;
}

.eng-shot img {
  width: 100%;
  height: 100%;
  min-height: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.08);
}

.eng-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(93, 189, 255, 0.22);
  border-top: 1px solid rgba(93, 189, 255, 0.24);
  border-bottom: 1px solid rgba(93, 189, 255, 0.24);
}

.eng-stat {
  padding: 30px 34px;
  background:
    linear-gradient(135deg, rgba(93, 189, 255, 0.12), transparent 44%),
    #0b1727;
  color: var(--eng-paper);
}

.eng-stat strong {
  display: block;
  font-family: var(--mono);
  font-size: 36px;
  line-height: 1;
  color: var(--eng-lime);
}

.eng-stat span {
  display: block;
  margin-top: 12px;
  color: rgba(244, 249, 255, 0.7);
  font-size: 13px;
  line-height: 1.5;
}

.eng-section {
  position: relative;
  padding: 88px 0;
}

.eng-section--projects,
.eng-section--gallery {
  background:
    linear-gradient(90deg, rgba(31, 111, 184, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(31, 111, 184, 0.05) 1px, transparent 1px),
    #eef6ff;
  background-size: 34px 34px;
  border-top: 1px solid rgba(31, 111, 184, 0.14);
  border-bottom: 1px solid rgba(31, 111, 184, 0.14);
}

.eng-section--dark {
  background:
    radial-gradient(700px 280px at 100% 0%, rgba(93, 189, 255, 0.13), transparent 62%),
    linear-gradient(180deg, #07111f 0%, #0b1727 100%);
  color: var(--eng-paper);
}

.eng-section--dark .eng-section__head h2 {
  color: var(--eng-paper);
}

.eng-section--dark .eng-kicker {
  color: var(--eng-lime);
}

.eng-section__head {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 46px;
  align-items: start;
  margin-bottom: 44px;
}

.eng-section__head h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(32px, 4.2vw, 58px);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--eng-ink);
}

.eng-discipline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.eng-discipline {
  position: relative;
  min-height: 250px;
  padding: 28px 24px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(93, 189, 255, 0.11), transparent 48%),
    linear-gradient(180deg, #ffffff 0%, #f4f9ff 100%);
  border: 1px solid rgba(31, 111, 184, 0.18);
  box-shadow: 0 18px 44px rgba(7, 17, 31, 0.08);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.eng-discipline::after {
  content: "";
  position: absolute;
  right: 22px;
  bottom: 22px;
  width: 68px;
  height: 68px;
  border-right: 1px solid rgba(31, 111, 184, 0.22);
  border-bottom: 1px solid rgba(31, 111, 184, 0.22);
}

.eng-discipline__rule {
  display: block;
  width: 48px;
  height: 3px;
  margin-bottom: 20px;
  background: linear-gradient(90deg, var(--eng-blue), var(--eng-cyan));
}

.eng-discipline h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 400;
  line-height: 1.1;
}

.eng-discipline p {
  margin: 12px 0 0;
  color: var(--eng-copy);
  font-size: 14px;
  line-height: 1.62;
}

.eng-band {
  position: relative;
  overflow: hidden;
  padding: 74px 0;
  background:
    radial-gradient(720px 260px at 0% 0%, rgba(154, 244, 211, 0.13), transparent 60%),
    linear-gradient(135deg, #07111f 0%, #10294a 100%);
  color: var(--eng-paper);
}

.eng-band::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(93, 189, 255, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(93, 189, 255, 0.08) 1px, transparent 1px);
  background-size: 56px 56px;
}

.eng-band .wrap {
  position: relative;
  z-index: 1;
}

.eng-band .eng-kicker {
  color: var(--eng-lime);
}

.eng-band__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) 1.1fr;
  gap: 54px;
  align-items: start;
}

.eng-band h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.eng-sector-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.eng-sector-list li {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  padding: 20px 18px;
  border: 1px solid rgba(93, 189, 255, 0.26);
  background: rgba(7, 17, 31, 0.54);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.eng-sector-list span {
  color: rgba(244, 249, 255, 0.9);
  font-size: 18px;
  font-weight: 500;
  text-align: center;
  width: 100%;
}

.eng-sector-list strong {
  display: none;
}

.eng-project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.eng-project-card {
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(31, 111, 184, 0.16);
  box-shadow: 0 18px 46px rgba(7, 17, 31, 0.09);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.eng-project-card__media {
  position: relative;
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--eng-panel);
}

.eng-project-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(7, 17, 31, 0.04), rgba(7, 17, 31, 0.4)),
    linear-gradient(90deg, rgba(93, 189, 255, 0.12) 1px, transparent 1px);
  background-size: auto, 38px 38px;
}

.eng-project-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.08);
  transition: transform 0.48s ease, filter 0.48s ease;
}

.eng-project-card:hover .eng-project-card__media img {
  transform: scale(1.045);
  filter: saturate(1) contrast(1.05);
}

.eng-project-card__body {
  padding: 24px;
}

.eng-project-card__meta {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--eng-blue);
}

.eng-project-card__title {
  margin: 0;
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.eng-project-card__text {
  margin: 12px 0 0;
  color: var(--eng-copy);
  font-size: 14px;
  line-height: 1.6;
}

.eng-project-card__parties {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 16px;
  color: var(--eng-muted);
  font-size: 12px;
}

.eng-link {
  display: inline-flex;
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--eng-blue);
  border-bottom: 1px solid rgba(31, 111, 184, 0.36);
  padding-bottom: 3px;
}

.eng-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 18px;
}

.eng-tag {
  padding: 6px 9px;
  border: 1px solid rgba(31, 111, 184, 0.2);
  background: rgba(93, 189, 255, 0.12);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--eng-blue);
}

.eng-logo-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  max-width: 1200px;
  margin: 0 auto;
}

.eng-logo-tile {
  min-height: 118px;
  padding: 16px;
  display: grid;
  place-items: center;
  gap: 10px;
  background: rgba(244, 249, 255, 0.96);
  border: 1px solid rgba(93, 189, 255, 0.18);
  color: var(--eng-ink);
  text-align: center;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.eng-logo-tile img {
  max-width: 128px;
  max-height: 52px;
  object-fit: contain;
}

.eng-logo-tile span {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--eng-muted);
}

.eng-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 22px;
  align-items: center;
  margin: 24px 0 84px;
  padding: 34px 38px;
  border: 1px solid rgba(31, 111, 184, 0.18);
  background:
    linear-gradient(135deg, rgba(93, 189, 255, 0.14), transparent 42%),
    #fff;
  box-shadow: 0 18px 48px rgba(7, 17, 31, 0.08);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.eng-cta p {
  margin: 0;
  color: var(--eng-copy);
  max-width: 620px;
}

.eng-detail-hero {
  position: relative;
  overflow: hidden;
  padding: 128px 0 76px;
  background: #07111f;
  color: var(--eng-paper);
  border-bottom: 1px solid rgba(93, 189, 255, 0.28);
}

.eng-detail-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, rgba(7, 17, 31, 0.9), rgba(7, 17, 31, 0.42)),
    var(--detail-image);
  background-size: cover;
  background-position: center;
  opacity: 0.9;
}

.eng-detail-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(93, 189, 255, 0.1) 1px, transparent 1px),
    linear-gradient(rgba(93, 189, 255, 0.08) 1px, transparent 1px);
  background-size: 48px 48px;
}

.eng-detail-hero .wrap {
  position: relative;
  z-index: 1;
}

.eng-detail-hero .eng-kicker,
.eng-detail-hero .eng-lead {
  color: rgba(244, 249, 255, 0.78);
}

.eng-detail-hero .eng-title {
  color: var(--eng-paper);
}

.eng-detail-hero .eng-tag {
  background: rgba(93, 189, 255, 0.13);
  color: var(--eng-paper);
  border-color: rgba(93, 189, 255, 0.3);
}

.eng-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.42fr);
  gap: 48px;
  align-items: start;
}

.eng-prose {
  color: var(--eng-copy);
  font-size: 16px;
  line-height: 1.72;
  max-width: 820px;
}

.eng-prose h2 {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 400;
  color: var(--eng-ink);
}

.eng-prose p {
  margin: 0 0 1.05em;
}

.eng-fact-card {
  padding: 26px;
  background:
    linear-gradient(135deg, rgba(93, 189, 255, 0.12), transparent 44%),
    #fff;
  border: 1px solid rgba(31, 111, 184, 0.18);
  box-shadow: 0 18px 44px rgba(7, 17, 31, 0.08);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.eng-fact-card h3 {
  margin: 0 0 16px;
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 400;
}

.eng-fact-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.eng-fact-card li {
  display: grid;
  gap: 5px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(31, 111, 184, 0.14);
  color: var(--eng-copy);
  font-size: 14px;
}

.eng-fact-card li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.eng-fact-card span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--eng-muted);
}

.eng-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.eng-gallery figure {
  position: relative;
  overflow: hidden;
  margin: 0;
  background: #fff;
  border: 1px solid rgba(31, 111, 184, 0.16);
  box-shadow: 0 14px 36px rgba(7, 17, 31, 0.08);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.eng-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.06);
}

.eng-gallery figcaption {
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--eng-muted);
}

.eng-placeholder {
  min-height: 340px;
  display: grid;
  place-items: center;
  padding: 40px;
  border: 1px solid rgba(31, 111, 184, 0.18);
  background:
    repeating-linear-gradient(135deg, rgba(31, 111, 184, 0.08) 0 1px, transparent 1px 16px),
    #e8f3ff;
  text-align: center;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.eng-placeholder h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 300;
  letter-spacing: -0.02em;
}

.eng-placeholder p {
  margin: 14px 0 0;
  color: var(--eng-copy);
}

.eng-party-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.eng-party-list li {
  min-height: 112px;
  padding: 16px;
  display: grid;
  place-items: center;
  gap: 10px;
  text-align: center;
  background: #fff;
  border: 1px solid rgba(31, 111, 184, 0.16);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.eng-party-list img {
  max-width: 130px;
  max-height: 54px;
  object-fit: contain;
}

.eng-party-list span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--eng-muted);
}

@media (max-width: 1100px) {
  .eng-project-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 980px) {

  .eng-stats,
  .eng-discipline-grid,
  .eng-gallery,
  .eng-party-list {
    grid-template-columns: 1fr 1fr;
  }

  .eng-hero__grid,
  .eng-section__head,
  .eng-band__grid,
  .eng-detail-layout {
    grid-template-columns: 1fr;
  }

  .eng-hero__media {
    min-height: 420px;
  }
}

@media (max-width: 640px) {
  .eng-main {
    padding-top: 126px;
  }

  .eng-tabs {
    top: 126px;
  }

  .eng-stats,
  .eng-discipline-grid,
  .eng-sector-list,
  .eng-project-grid,
  .eng-logo-grid,
  .eng-gallery,
  .eng-party-list {
    grid-template-columns: 1fr;
  }

  .eng-hero {
    padding-top: 48px;
  }

  .eng-hero__media {
    min-height: 320px;
  }

  .eng-cta {
    padding: 28px 22px;
  }
}

/* Light R&Co. engineering direction: same site palette, technical category details */
body.eng-site {
  --eng-ink: #0e1116;
  --eng-copy: #2c3440;
  --eng-muted: #6b6f76;
  --eng-line: rgba(14, 17, 22, 0.12);
  --eng-blue: #1f3a5f;
  --eng-cyan: #5f7fa8;
  --eng-lime: #8aa7c6;
  --eng-paper: #fafaf7;
  --eng-card: #fffdf8;
  background:
    radial-gradient(780px 360px at 6% 0%, rgba(31, 58, 95, 0.1), transparent 62%),
    radial-gradient(620px 300px at 100% 8%, rgba(95, 127, 168, 0.12), transparent 62%),
    linear-gradient(180deg, #fbfaf5 0%, #f1efe9 100%);
  color: var(--eng-ink);
}

body.eng-site::before {
  background-image:
    linear-gradient(rgba(31, 58, 95, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 58, 95, 0.04) 1px, transparent 1px),
    linear-gradient(rgba(14, 17, 22, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 17, 22, 0.025) 1px, transparent 1px);
  background-size: 36px 36px, 36px 36px, 144px 144px, 144px 144px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
}

body.eng-site::after {
  background:
    linear-gradient(120deg, transparent 0 18%, rgba(31, 58, 95, 0.06) 18.1% 18.28%, transparent 18.36%),
    linear-gradient(32deg, transparent 0 64%, rgba(31, 58, 95, 0.055) 64.1% 64.26%, transparent 64.34%);
}

.eng-site .site-header,
.eng-site .site-header.is-scrolled {
  background: rgba(250, 250, 247, 0.94);
  border-bottom-color: rgba(14, 17, 22, 0.1);
}

.eng-site .site-header__brand-divider {
  border-left-color: var(--line);
}

.eng-site .site-header__brand-divider .mono,
.eng-site .site-header__cta .mono,
.eng-site .nav-link {
  color: var(--ink);
}

.eng-site .site-header__logo {
  filter: none;
}

.eng-site .btn-outline {
  color: var(--ink);
  border-color: var(--ink);
}

.eng-site .btn-outline:hover {
  background: var(--ink);
  color: var(--paper);
}

.eng-current {
  color: var(--eng-blue) !important;
}

.eng-current::after {
  background: var(--eng-blue) !important;
}

.eng-tabs {
  background: rgba(250, 250, 247, 0.96);
  border-top-color: rgba(14, 17, 22, 0.06);
  border-bottom-color: var(--eng-line);
  box-shadow: 0 10px 34px rgba(14, 17, 22, 0.055);
}

.eng-tab {
  border-color: rgba(31, 58, 95, 0.16);
  background:
    linear-gradient(135deg, rgba(31, 58, 95, 0.08), transparent 42%),
    var(--eng-card);
  color: var(--eng-ink);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.eng-tab::before {
  content: "";
  position: absolute;
  top: 14px;
  right: 18px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  opacity: 0;
  transform: scale(0.72) rotate(0deg);
  transform-origin: center;
  transition: opacity 0.18s ease, transform 0.3s ease;
  background:
    radial-gradient(circle, var(--eng-card) 0 4px, transparent 4.5px),
    radial-gradient(circle, transparent 0 8px, var(--eng-blue) 8.5px 10px, transparent 10.5px),
    repeating-conic-gradient(var(--eng-blue) 0deg 12deg, transparent 12deg 24deg);
  box-shadow: 0 0 0 1px rgba(31, 58, 95, 0.12);
}

.eng-tab::after {
  background: var(--eng-blue);
  transition: width 0.22s ease, opacity 0.22s ease;
}

.eng-tab:hover {
  border-color: rgba(31, 58, 95, 0.34);
  box-shadow: 0 14px 34px rgba(14, 17, 22, 0.08);
}

.eng-tab:hover::before {
  opacity: 1;
  transform: scale(1) rotate(90deg);
  animation: eng-gear-turn 1.2s linear infinite;
}

.eng-tab:hover::after {
  width: 64px;
  opacity: 0.9;
}

.eng-tab small {
  color: var(--eng-muted);
}

@keyframes eng-gear-turn {
  to {
    transform: scale(1) rotate(450deg);
  }
}

.eng-hero {
  color: var(--eng-ink);
  background:
    linear-gradient(90deg, rgba(250, 250, 247, 0.96), rgba(250, 250, 247, 0.82)),
    repeating-linear-gradient(90deg, rgba(31, 58, 95, 0.055) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, rgba(31, 58, 95, 0.045) 0 1px, transparent 1px 44px);
  border-bottom-color: var(--eng-line);
}

.eng-hero::before {
  content: "NETWORKS  /  SECURITY  /  IT";
  color: rgba(31, 58, 95, 0.06);
}

.eng-hero::after {
  content: "";
  position: absolute;
  left: 48px;
  right: 48px;
  bottom: 32px;
  height: 28px;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, rgba(31, 58, 95, 0.28) 0 1px, transparent 1px 24px),
    linear-gradient(90deg, rgba(31, 58, 95, 0.28), transparent);
  opacity: 0.35;
}

.eng-title {
  color: var(--eng-ink);
}

.eng-lead {
  color: var(--eng-copy);
}

.eng-kicker {
  color: var(--eng-blue);
}

.eng-btn {
  background: var(--eng-blue);
  color: var(--paper);
  border-color: var(--eng-blue);
  box-shadow: none;
}

.eng-btn--ghost {
  background: transparent;
  color: var(--eng-ink);
  border-color: var(--eng-ink);
}

.eng-shot {
  border-color: rgba(31, 58, 95, 0.22);
  background: #e8eef5;
  box-shadow: 0 20px 52px rgba(14, 17, 22, 0.12);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.eng-shot::after,
.eng-project-card__media::after {
  background:
    linear-gradient(180deg, rgba(250, 250, 247, 0.02), rgba(14, 17, 22, 0.18)),
    repeating-linear-gradient(0deg, rgba(31, 58, 95, 0.08) 0 1px, transparent 1px 8px);
  mix-blend-mode: normal;
}

.eng-shot img,
.eng-project-card__media img,
.eng-gallery img {
  filter: grayscale(0.16) saturate(0.94) contrast(1.02);
}

.eng-stats {
  background: var(--eng-line);
  border-color: var(--eng-line);
}

.eng-stat {
  background:
    linear-gradient(135deg, rgba(31, 58, 95, 0.08), transparent 42%),
    var(--eng-card);
  color: var(--eng-ink);
}

.eng-stat strong {
  font-family: var(--serif);
  color: var(--eng-blue);
}

.eng-stat span {
  color: var(--eng-muted);
}

.eng-section--projects,
.eng-section--gallery {
  background:
    linear-gradient(90deg, rgba(31, 58, 95, 0.045) 1px, transparent 1px),
    linear-gradient(rgba(31, 58, 95, 0.04) 1px, transparent 1px),
    #f1efe9;
  background-size: 34px 34px;
  border-color: var(--eng-line);
}

.eng-section--dark {
  background:
    repeating-linear-gradient(90deg, rgba(31, 58, 95, 0.06) 0 1px, transparent 1px 42px),
    #f7f5ee;
  color: var(--eng-ink);
  border-top: 1px solid var(--eng-line);
  border-bottom: 1px solid var(--eng-line);
}

.eng-section--dark .eng-section__head h2 {
  color: var(--eng-ink);
}

.eng-section--dark .eng-kicker {
  color: var(--eng-blue);
}

.eng-discipline,
.eng-project-card,
.eng-fact-card,
.eng-gallery figure,
.eng-party-list li,
.eng-cta {
  background:
    linear-gradient(135deg, rgba(31, 58, 95, 0.075), transparent 42%),
    var(--eng-card);
  border-color: rgba(31, 58, 95, 0.16);
  box-shadow: 0 14px 38px rgba(14, 17, 22, 0.06);
}

.eng-discipline::before,
.eng-project-card::before,
.eng-fact-card::before {
  content: "";
  position: absolute;
  top: 18px;
  right: 18px;
  width: 48px;
  height: 48px;
  pointer-events: none;
  border-top: 1px solid rgba(31, 58, 95, 0.2);
  border-right: 1px solid rgba(31, 58, 95, 0.2);
}

.eng-project-card,
.eng-fact-card {
  position: relative;
}

.eng-discipline__rule,
.eng-band {
  background: var(--eng-blue);
}

.eng-band {
  background:
    linear-gradient(90deg, rgba(31, 58, 95, 0.98), rgba(31, 58, 95, 0.88)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.1) 0 1px, transparent 1px 56px);
  color: var(--paper);
}

.eng-band::after {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 56px 56px;
}

.eng-band .eng-kicker {
  color: rgba(255, 255, 255, 0.72);
}

.eng-sector-list li {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
}

.eng-sector-list strong {
  color: var(--paper);
  font-family: var(--serif);
}

.eng-project-card__media {
  background: #e8eef5;
}

.eng-logo-tile {
  background: var(--eng-card);
  border-color: rgba(31, 58, 95, 0.14);
  color: var(--eng-ink);
}

.eng-detail-hero {
  background: #f1efe9;
  color: var(--eng-ink);
  border-bottom-color: var(--eng-line);
}

.eng-detail-hero::before {
  background-image:
    linear-gradient(90deg, rgba(250, 250, 247, 0.96), rgba(250, 250, 247, 0.7)),
    var(--detail-image);
  opacity: 1;
}

.eng-detail-hero::after {
  background:
    linear-gradient(90deg, rgba(31, 58, 95, 0.075) 1px, transparent 1px),
    linear-gradient(rgba(31, 58, 95, 0.06) 1px, transparent 1px);
  background-size: 44px 44px;
}

.eng-detail-hero .eng-title {
  color: var(--eng-ink);
}

.eng-detail-hero .eng-kicker,
.eng-detail-hero .eng-lead {
  color: var(--eng-copy);
}

.eng-detail-hero .eng-tag {
  background: rgba(31, 58, 95, 0.08);
  color: var(--eng-blue);
  border-color: rgba(31, 58, 95, 0.18);
}

.eng-placeholder {
  background:
    repeating-linear-gradient(135deg, rgba(31, 58, 95, 0.06) 0 1px, transparent 1px 16px),
    #e8eef5;
}