:root {
  --color-black: #111111;
  --color-white: #ffffff;
  --color-gray: #5f5f5f;
  --color-light-gray: #f5f5f3;
  --color-border: #deded9;
  --font-main: Inter, "Helvetica Neue", Arial, sans-serif;
  --space-section: clamp(5rem, 9vw, 9rem);
  --container-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  background: var(--color-white);
  color: var(--color-black);
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-black);
  outline-offset: 4px;
}

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

p {
  color: var(--color-gray);
}

.container {
  width: min(calc(100% - 2rem), var(--container-width));
  margin-inline: auto;
}

.section {
  padding-block: var(--space-section);
}

.section-tight {
  padding-block: clamp(2rem, 5vw, 4rem);
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  transform: translateY(-140%);
  background: var(--color-black);
  color: var(--color-white);
  padding: 0.7rem 1rem;
  font-weight: 700;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.62rem;
  flex: 0 0 auto;
  min-width: 0;
}

.brand-mark {
  position: relative;
  width: 46px;
  aspect-ratio: 1;
  border: 9px solid var(--color-black);
  border-radius: 50%;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 10px;
  background: var(--color-black);
  border-radius: inherit;
}

.brand-word {
  transform: translateY(-0.08em);
  font-size: 4rem;
  font-weight: 850;
  line-height: 0.9;
  letter-spacing: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.4rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-menu a {
  position: relative;
  display: inline-flex;
  padding-block: 0.6rem;
  color: var(--color-gray);
  font-size: 0.92rem;
  font-weight: 650;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0.3rem;
  left: 0;
  height: 1px;
  transform: scaleX(0);
  transform-origin: right;
  background: var(--color-black);
  transition: transform 180ms ease;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  color: var(--color-black);
}

.nav-menu a:hover::after,
.nav-menu a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 7px;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  cursor: pointer;
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--color-black);
  transition: transform 180ms ease;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4.5px) rotate(-45deg);
}

.hero {
  min-height: calc(100vh - 82px);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: clamp(3rem, 7vw, 6rem);
  align-items: center;
  isolation: isolate;
}

.hero-content {
  position: relative;
  z-index: 2;
  min-width: 0;
}

.eyebrow {
  margin-bottom: 1.1rem;
  color: var(--color-black);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2 {
  max-width: 980px;
  font-weight: 820;
  line-height: 0.98;
  letter-spacing: 0;
  text-wrap: balance;
  hyphens: auto;
  overflow-wrap: break-word;
}

h1 {
  margin-bottom: 1.6rem;
  max-width: 820px;
  font-size: 5.65rem;
}

h2 {
  margin-bottom: 1.2rem;
  font-size: 4.7rem;
}

h3 {
  margin-bottom: 0.7rem;
  font-size: 1.22rem;
  line-height: 1.2;
}

.hero-lead {
  max-width: 610px;
  margin-bottom: 2.2rem;
  font-size: 1.2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0.85rem 1.25rem;
  border: 1px solid var(--color-black);
  font-weight: 800;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--color-black);
  color: var(--color-white);
}

.button-primary:hover {
  background: var(--color-white);
  color: var(--color-black);
}

.button-secondary {
  background: var(--color-white);
  color: var(--color-black);
}

.button-secondary:hover {
  background: var(--color-black);
  color: var(--color-white);
}

.technical-visual {
  position: relative;
  z-index: 1;
  width: 100%;
  min-height: clamp(360px, 48vw, 610px);
  overflow: hidden;
  border-left: 1px solid var(--color-border);
}

.visual-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 74px 74px;
  opacity: 0.34;
}

.pipe,
.layer,
.axis {
  position: absolute;
}

.pipe {
  border-radius: 50%;
  border: 1px solid var(--color-black);
  background: var(--color-white);
}

.pipe::before,
.pipe::after {
  content: "";
  position: absolute;
  border-radius: inherit;
}

.pipe::before {
  inset: 13%;
  border: 42px solid var(--color-black);
}

.pipe::after {
  inset: 35%;
  background: var(--color-black);
}

.pipe-large {
  width: min(78%, 420px);
  aspect-ratio: 1;
  right: -4%;
  top: 10%;
}

.pipe-small {
  width: min(32%, 168px);
  aspect-ratio: 1;
  left: 9%;
  bottom: 13%;
}

.pipe-small::before {
  border-width: 22px;
}

.layer {
  height: 1px;
  background: var(--color-black);
  transform: rotate(-24deg);
  transform-origin: left center;
  opacity: 0.74;
}

.layer-one {
  width: 75%;
  left: 7%;
  top: 30%;
}

.layer-two {
  width: 72%;
  right: -3%;
  bottom: 26%;
}

.axis {
  background: var(--color-black);
}

.axis-horizontal {
  width: 72%;
  height: 1px;
  left: 16%;
  top: 56%;
}

.axis-vertical {
  width: 1px;
  height: 68%;
  left: 34%;
  top: 16%;
  opacity: 0.62;
}

.trust {
  border-bottom: 1px solid var(--color-border);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-left: 1px solid var(--color-border);
}

.trust-item {
  min-height: 210px;
  padding: clamp(1.4rem, 3vw, 2.2rem);
  border-right: 1px solid var(--color-border);
}

.item-number,
.service-index {
  display: inline-block;
  margin-bottom: 3rem;
  color: var(--color-gray);
  font-size: 0.78rem;
  font-weight: 800;
}

.section-heading {
  max-width: 860px;
  margin-bottom: clamp(2.4rem, 5vw, 4.4rem);
  min-width: 0;
}

.section-heading.compact {
  max-width: 690px;
  margin-bottom: 0;
}

.section-heading p {
  max-width: 720px;
  font-size: 1.16rem;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.service-card {
  min-height: 290px;
  grid-column: span 2;
  padding: clamp(1.4rem, 3vw, 2rem);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  min-width: 0;
  background:
    linear-gradient(135deg, transparent 0 48%, rgba(17, 17, 17, 0.05) 48% 52%, transparent 52%),
    var(--color-white);
}

.service-card:nth-child(4),
.service-card:nth-child(5) {
  grid-column: span 3;
}

.image-section {
  border-top: 1px solid var(--color-border);
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-flow: dense;
  gap: clamp(0.75rem, 1.6vw, 1.25rem);
  border: 1px solid var(--color-border);
  padding: clamp(0.75rem, 1.6vw, 1.25rem);
  background: var(--color-white);
}

.image-card {
  display: grid;
  grid-template-rows: auto auto;
  min-width: 0;
  margin: 0;
  background: var(--color-white);
  border: 1px solid var(--color-border);
}

.image-card-wide {
  grid-column: span 2;
}

.image-card:nth-child(1) {
  grid-column: span 2;
}

.image-card:nth-child(4) {
  grid-column: span 2;
}

.image-toggle {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: var(--color-white);
  cursor: pointer;
  overflow: hidden;
}

.image-toggle:focus-visible {
  position: relative;
  z-index: 2;
  outline: 2px solid var(--color-black);
  outline-offset: -6px;
}

.image-toggle img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: grayscale(1) contrast(1.05);
  transition: filter 220ms ease, transform 220ms ease;
}

.image-card:nth-child(1) .image-toggle img,
.image-card:nth-child(4) .image-toggle img {
  aspect-ratio: 16 / 9;
}

.image-toggle:hover img,
.image-toggle:focus-visible img,
.image-toggle.is-color img,
.image-toggle[aria-pressed="true"] img {
  filter: grayscale(0) contrast(1);
  transform: scale(1.015);
}

.image-card figcaption {
  min-height: 58px;
  padding: 1rem;
  border-top: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-black);
  font-size: 0.92rem;
  font-weight: 740;
  line-height: 1.25;
}

.section-muted {
  background: var(--color-light-gray);
  border-block: 1px solid var(--color-border);
}

.projects-layout,
.process-layout,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.88fr) minmax(0, 1.12fr);
  gap: clamp(2.5rem, 7vw, 6rem);
  align-items: start;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--color-black);
}

.project-grid span {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0.9rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-black);
  font-weight: 720;
  min-width: 0;
}

.project-grid strong {
  font: inherit;
  overflow-wrap: anywhere;
}

.project-grid small {
  flex: 0 0 auto;
  color: var(--color-gray);
  font-size: 0.78rem;
  font-weight: 820;
  letter-spacing: 0.08em;
}

.project-grid span:nth-child(odd) {
  border-right: 1px solid var(--color-border);
}

.process-steps {
  border-top: 1px solid var(--color-black);
}

.process-step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 1.3rem;
  padding: clamp(1.4rem, 3vw, 2.1rem) 0;
  border-bottom: 1px solid var(--color-border);
}

.process-step span {
  display: inline-flex;
  width: 42px;
  aspect-ratio: 1;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-black);
  border-radius: 50%;
  font-weight: 820;
}

.process-step p {
  max-width: 560px;
  margin-bottom: 0;
}

.contact-section {
  border-top: 1px solid var(--color-border);
}

.contact-card {
  display: grid;
  gap: 0.35rem;
  margin: 0;
  padding: clamp(1.6rem, 4vw, 2.6rem);
  border: 1px solid var(--color-black);
  background: var(--color-white);
  font-style: normal;
  font-size: 1.26rem;
  overflow-wrap: anywhere;
}

.contact-card strong {
  margin-bottom: 1.2rem;
  font-size: 2.2rem;
  line-height: 1;
}

.contact-card a {
  width: fit-content;
  margin-top: 0.45rem;
  border-bottom: 1px solid currentColor;
  font-weight: 760;
}

.site-footer {
  padding-block: clamp(3rem, 6vw, 5rem);
  background: var(--color-black);
  color: var(--color-white);
}

.site-footer p,
.site-footer a {
  color: rgba(255, 255, 255, 0.72);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.75fr 0.55fr;
  gap: clamp(2rem, 6vw, 5rem);
}

.footer-brand {
  margin-bottom: 1.4rem;
}

.footer-brand .brand-mark {
  border-color: var(--color-white);
}

.footer-brand .brand-mark::after {
  background: var(--color-white);
}

.footer-column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
}

.footer-column h2 {
  margin-bottom: 0.8rem;
  font-size: 0.78rem;
  line-height: 1.2;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.footer-column p {
  margin-bottom: 0.7rem;
}

.footer-column a {
  border-bottom: 1px solid transparent;
}

.footer-column a:hover,
.footer-column a:focus-visible {
  color: var(--color-white);
  border-color: currentColor;
}

.reveal {
  transform: translateY(18px);
  opacity: 0;
  transition: opacity 520ms ease, transform 520ms ease;
}

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

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

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

@media (max-width: 1180px) {
  .brand-word {
    font-size: 3.35rem;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.78fr);
    gap: 2.75rem;
  }

  h1 {
    font-size: 4.95rem;
  }

  h2 {
    font-size: 3.85rem;
  }

  .hero-lead {
    font-size: 1.1rem;
  }

  .technical-visual {
    min-height: 500px;
  }
}

@media (max-width: 1040px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(250px, 0.7fr);
    gap: 2rem;
  }

  h1 {
    font-size: 4.35rem;
  }

  h2 {
    font-size: 3.45rem;
  }

  .technical-visual {
    min-height: 440px;
  }
}

@media (max-width: 900px) {
  html {
    scroll-padding-top: 82px;
  }

  .nav {
    min-height: 72px;
  }

  .brand-mark {
    width: 38px;
    border-width: 7px;
  }

  .brand-mark::after {
    inset: 8px;
  }

  .brand-word {
    font-size: 2.5rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: fixed;
    top: 72px;
    right: 0;
    left: 0;
    z-index: 40;
    display: grid;
    gap: 0;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-white);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
    transition: transform 200ms ease, opacity 200ms ease;
  }

  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-menu a {
    display: flex;
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 1.1rem;
  }

  .nav-menu li:last-child a {
    border-bottom: 0;
  }

  .hero {
    min-height: auto;
    padding-top: clamp(4rem, 12vw, 7rem);
  }

  .hero-grid,
  .projects-layout,
  .process-layout,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-content {
    z-index: auto;
  }

  h1 {
    font-size: 4rem;
  }

  h2 {
    font-size: 3.35rem;
  }

  .hero-lead,
  .section-heading p {
    font-size: 1.08rem;
  }

  .technical-visual {
    min-height: 420px;
    border-top: 1px solid var(--color-border);
    border-left: 0;
  }

  .pipe::before {
    border-width: 34px;
  }

  .pipe-small::before {
    border-width: 18px;
  }

  .trust-grid {
    grid-template-columns: 1fr;
    border-top: 1px solid var(--color-border);
  }

  .trust-item {
    min-height: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .service-card,
  .service-card:nth-child(4),
  .service-card:nth-child(5) {
    grid-column: span 3;
  }

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

  .image-card,
  .image-card-wide,
  .image-card:nth-child(1),
  .image-card:nth-child(4) {
    grid-column: auto;
  }

  .image-card:nth-child(1) .image-toggle img,
  .image-card:nth-child(4) .image-toggle img {
    aspect-ratio: 4 / 3;
  }

  .section-heading.compact {
    margin-bottom: clamp(2rem, 5vw, 3rem);
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  html {
    scroll-padding-top: 72px;
  }

  .container {
    width: min(calc(100% - 1.25rem), var(--container-width));
  }

  .section {
    padding-block: clamp(4rem, 16vw, 6rem);
  }

  .nav {
    gap: 1rem;
  }

  .brand {
    gap: 0.65rem;
  }

  .brand-mark {
    width: 34px;
    border-width: 6px;
  }

  .brand-mark::after {
    inset: 7px;
  }

  .brand-word {
    font-size: 2.1rem;
  }

  h1 {
    font-size: 2.85rem;
    line-height: 1;
  }

  h2 {
    font-size: 2.45rem;
    line-height: 1.04;
  }

  h3 {
    font-size: 1.12rem;
  }

  .eyebrow {
    font-size: 0.72rem;
    letter-spacing: 0.1em;
  }

  .hero {
    padding-top: 3.6rem;
  }

  .hero-grid {
    gap: 2.4rem;
  }

  .hero-lead,
  .section-heading p {
    font-size: 1rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .technical-visual {
    min-height: 330px;
  }

  .pipe-large {
    width: 76%;
    right: -16%;
  }

  .pipe-small {
    width: 36%;
  }

  .pipe::before {
    border-width: 24px;
  }

  .pipe-small::before {
    border-width: 12px;
  }

  .service-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }

  .image-grid {
    grid-template-columns: 1fr;
  }

  .image-card {
    grid-template-rows: auto auto;
  }

  .image-toggle img,
  .image-card:nth-child(1) .image-toggle img,
  .image-card:nth-child(4) .image-toggle img {
    min-height: 0;
    aspect-ratio: 16 / 11;
  }

  .service-card,
  .service-card:nth-child(4),
  .service-card:nth-child(5) {
    min-height: 230px;
    grid-column: auto;
  }

  .project-grid span:nth-child(odd) {
    border-right: 0;
  }

  .project-grid span {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.25rem;
  }

  .process-step {
    grid-template-columns: 46px 1fr;
    gap: 1rem;
  }

  .contact-card {
    font-size: 1.05rem;
  }

  .contact-card strong {
    font-size: 1.75rem;
  }
}

@media (max-width: 380px) {
  .container {
    width: min(calc(100% - 1rem), var(--container-width));
  }

  .brand-word {
    font-size: 1.85rem;
  }

  .nav-toggle {
    width: 42px;
    height: 42px;
  }

  h1 {
    font-size: 2.35rem;
  }

  h2 {
    font-size: 2.05rem;
  }

  .technical-visual {
    min-height: 280px;
  }

  .process-step {
    grid-template-columns: 1fr;
  }
}