:root {
  --black: #111111;
  --off-white: #f7f7f5;
  --charcoal: #2a2a2a;
  --grey: #6b6b6b;
  --bronze: #a78a5a;
  --line: rgba(247, 247, 245, 0.14);
  --soft: rgba(247, 247, 245, 0.72);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--off-white);
  background: var(--black);
  font-family: Inter, Sohne, "Segoe UI", Arial, sans-serif;
  letter-spacing: 0;
}

a {
  color: inherit;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 2rem;
  padding: 1.1rem clamp(1.1rem, 4vw, 3.5rem);
  border-bottom: 1px solid var(--line);
  background: rgba(17, 17, 17, 0.82);
  backdrop-filter: blur(18px);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
  text-decoration: none;
}

.brand-mark,
.hero-mark {
  position: relative;
  display: inline-block;
  width: 1.55rem;
  aspect-ratio: 1;
  color: var(--bronze);
}

.brand-mark::before,
.brand-mark::after,
.hero-mark::before,
.hero-mark::after {
  content: "";
  position: absolute;
  clip-path: polygon(25% 6%, 75% 6%, 100% 50%, 75% 94%, 25% 94%, 0 50%);
}

.brand-mark::before,
.hero-mark::before {
  inset: 0;
  background: currentColor;
}

.brand-mark::after,
.hero-mark::after {
  inset: 2px;
  background: var(--black);
}

.brand-word {
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--off-white);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: 1.25rem;
  color: rgba(247, 247, 245, 0.76);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--off-white);
}

.lang-switch {
  display: grid;
  grid-template-columns: repeat(2, 2.6rem);
  height: 2rem;
  border: 1px solid var(--line);
}

.lang-switch button {
  appearance: none;
  border: 0;
  border-right: 1px solid var(--line);
  color: rgba(247, 247, 245, 0.62);
  background: transparent;
  font: inherit;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  cursor: pointer;
}

.lang-switch button:last-child {
  border-right: 0;
}

.lang-switch button.active {
  color: var(--black);
  background: var(--off-white);
}

.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(20rem, 1.12fr);
  align-items: stretch;
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 44rem;
  padding: 8.5rem clamp(1.35rem, 6vw, 5.5rem) 5rem;
}

.hero-logo {
  margin-bottom: 2.5rem;
}

.hero-mark {
  display: block;
  width: 4.9rem;
}

.hero-mark::after {
  inset: 5px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 1.25rem;
  color: var(--bronze);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.5em;
  line-height: 1.5;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 1.1rem;
  font-size: clamp(2.7rem, 8vw, 6.6rem);
  font-weight: 400;
  letter-spacing: 0.28em;
  line-height: 0.98;
  text-transform: uppercase;
}

.slogan {
  max-width: 35rem;
  margin-bottom: 2rem;
  color: var(--off-white);
  font-size: clamp(1.05rem, 2.1vw, 1.35rem);
  letter-spacing: 0.23em;
  line-height: 1.75;
  text-transform: uppercase;
}

.hero-text {
  max-width: 38rem;
  margin-bottom: 2.4rem;
  color: var(--soft);
  font-size: 1.02rem;
  line-height: 1.9;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 3rem;
  padding: 0.9rem 1.25rem;
  border: 1px solid var(--bronze);
  color: var(--off-white);
  background: rgba(167, 138, 90, 0.08);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  line-height: 1.25;
  text-decoration: none;
  text-transform: uppercase;
}

.button:hover,
.button:focus-visible {
  color: var(--black);
  background: var(--bronze);
}

.hero-visual {
  position: relative;
  min-height: 30rem;
  overflow: hidden;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(17, 17, 17, 0.9), rgba(17, 17, 17, 0.28) 48%, rgba(17, 17, 17, 0.08)),
    linear-gradient(0deg, rgba(17, 17, 17, 0.88), transparent 42%);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.08) brightness(0.82);
}

.section {
  width: min(var(--max), calc(100% - clamp(2rem, 7vw, 7rem)));
  margin: 0 auto;
  padding: clamp(4.8rem, 9vw, 8rem) 0;
}

.split {
  display: grid;
  grid-template-columns: minmax(16rem, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 7vw, 6rem);
  border-bottom: 1px solid var(--line);
}

h2 {
  max-width: 45rem;
  margin-bottom: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4.8vw, 4.5rem);
  font-weight: 400;
  line-height: 1.08;
}

.section-copy {
  color: var(--soft);
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.95;
}

.section-copy p {
  margin-bottom: 1.4rem;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2.2rem;
  border-bottom: 1px solid var(--line);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.expertise-grid article {
  min-height: 15rem;
  padding: 1.45rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(42, 42, 42, 0.22);
}

.expertise-grid h3 {
  max-width: 13rem;
  margin: 3rem 0 0;
  color: rgba(247, 247, 245, 0.86);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  line-height: 1.65;
  text-transform: uppercase;
}

.icon {
  position: relative;
  display: block;
  width: 2.8rem;
  height: 2.8rem;
  color: var(--off-white);
}

.icon::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1.1rem;
  width: 1.8rem;
  height: 1px;
  background: var(--bronze);
}

.target {
  border: 1px solid currentColor;
  border-radius: 50%;
}

.target::before {
  content: "";
  position: absolute;
  inset: 0.56rem;
  border: 1px solid currentColor;
  border-radius: 50%;
  box-shadow: 0 0 0 0.54rem rgba(247, 247, 245, 0.03);
}

.cube {
  transform: none;
}

.cube::before {
  content: "";
  position: absolute;
  inset: 0.55rem;
  border: 1px solid currentColor;
  transform: rotate(30deg);
}

.shield {
  border: 0;
}

.shield::before {
  content: "";
  position: absolute;
  inset: 0.35rem 0.55rem;
  background: currentColor;
  clip-path: polygon(50% 0, 91% 14%, 82% 74%, 50% 100%, 18% 74%, 9% 14%);
}

.network::before,
.decision::before {
  content: "";
  position: absolute;
  inset: 0.35rem;
  background:
    radial-gradient(circle, currentColor 0 2px, transparent 2.5px) 0 0 / 100% 100%,
    linear-gradient(45deg, transparent 48%, currentColor 49% 51%, transparent 52%),
    linear-gradient(-45deg, transparent 48%, currentColor 49% 51%, transparent 52%);
}

.decision::before {
  inset: 0.2rem;
  background:
    linear-gradient(currentColor, currentColor) 0.4rem 0.55rem / 1.9rem 1px no-repeat,
    linear-gradient(currentColor, currentColor) 0.4rem 1.35rem / 1.9rem 1px no-repeat,
    linear-gradient(currentColor, currentColor) 0.4rem 2.15rem / 1.9rem 1px no-repeat,
    linear-gradient(90deg, currentColor, currentColor) 0.4rem 0.55rem / 1px 1.6rem no-repeat,
    linear-gradient(90deg, currentColor, currentColor) 2.3rem 0.55rem / 1px 1.6rem no-repeat;
}

.approach {
  border-bottom: 1px solid var(--line);
}

.method-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.method-list li {
  min-height: 18rem;
  display: grid;
  align-content: space-between;
  gap: 2.2rem;
  padding: clamp(1.4rem, 3vw, 2rem);
  border-right: 1px solid var(--line);
  background: var(--black);
}

.method-list li:last-child {
  border-right: 0;
}

.method-number {
  color: var(--bronze);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.28em;
}

.method-list h3 {
  margin: 0 0 1rem;
  color: var(--off-white);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.45rem, 2.5vw, 2.15rem);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.1;
}

.method-list p {
  max-width: 21rem;
  margin: 0;
  color: var(--soft);
  font-size: 0.96rem;
  line-height: 1.75;
}

.method-list h3,
.method-list p {
  text-transform: none;
}

.method-number {
  text-transform: uppercase;
}

.contact {
  display: grid;
  justify-items: start;
  gap: 1.35rem;
  text-align: left;
}

.contact h2 {
  max-width: 48rem;
}

.contact-email {
  color: var(--off-white);
  font-size: clamp(1.25rem, 4vw, 2.4rem);
  line-height: 1.35;
  text-decoration-color: var(--bronze);
  text-underline-offset: 0.3em;
}

.button-secondary {
  margin-top: 0.5rem;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.3rem clamp(1.1rem, 4vw, 3.5rem);
  border-top: 1px solid var(--line);
  color: rgba(247, 247, 245, 0.5);
  font-size: 0.68rem;
  letter-spacing: 0.26em;
  line-height: 1.6;
  text-transform: uppercase;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-copy {
    min-height: 74vh;
  }

  .hero-visual {
    min-height: 26rem;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .split,
  .section-heading {
    display: block;
  }

  .section-copy {
    margin-top: 2rem;
  }

  .expertise-grid,
  .method-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .method-list li:nth-child(2) {
    border-right: 0;
  }

  .method-list li:last-child {
    grid-column: 1 / -1;
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 620px) {
  .site-header {
    gap: 1rem;
    padding: 0.85rem 1rem;
  }

  .brand-word {
    max-width: 9rem;
    font-size: 0.68rem;
    letter-spacing: 0.28em;
  }

  .lang-switch {
    grid-template-columns: repeat(2, 2.25rem);
  }

  .hero-copy {
    min-height: 76vh;
    padding: 6.8rem 1.15rem 3.5rem;
  }

  .hero-mark {
    width: 3.8rem;
  }

  h1 {
    font-size: clamp(2.25rem, 13vw, 3.5rem);
    letter-spacing: 0.18em;
  }

  .slogan {
    letter-spacing: 0.15em;
  }

  .button {
    width: 100%;
    max-width: 24rem;
    padding-inline: 0.9rem;
    letter-spacing: 0.12em;
  }

  .section {
    width: calc(100% - 2rem);
    padding: 4.2rem 0;
  }

  .expertise-grid,
  .method-list {
    grid-template-columns: 1fr;
  }

  .expertise-grid article {
    min-height: 12rem;
  }

  .method-list li,
  .method-list li:nth-child(2),
  .method-list li:last-child {
    min-height: 14rem;
    border-right: 0;
    border-top: 1px solid var(--line);
    grid-column: auto;
  }

  .method-list li:first-child {
    border-top: 0;
  }

  .site-footer {
    flex-direction: column;
  }
}