:root {
  --ink: #0b1724;
  --navy: #091827;
  --navy-2: #102a42;
  --slate: #536170;
  --mist: #e8edf1;
  --paper: #f7f7f4;
  --white: #fff;
  --copper: #ca7b3a;
  --copper-light: #efb36d;
  --line: rgba(11, 23, 36, 0.13);
  --shadow: 0 24px 70px rgba(9, 24, 39, 0.12);
  --radius-sm: 12px;
  --radius-md: 22px;
  --radius-lg: 32px;
  --container: 1180px;
  --header: 78px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header) + 18px);
}

html[data-lang="en"] [data-lang="ru"],
html[data-lang="ru"] [data-lang="en"] {
  display: none !important;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

button {
  font: inherit;
}

:focus-visible {
  outline: 3px solid var(--copper-light);
  outline-offset: 4px;
}

.container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 16px;
  color: var(--white);
  background: var(--navy);
  border-radius: 8px;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header);
  color: var(--white);
  background: rgba(7, 19, 31, 0.86);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(18px);
}

.header-inner {
  height: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 34px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand-mark {
  width: 3px;
  height: 34px;
  background: var(--copper-light);
  border-radius: 999px;
}

.brand-mark span {
  display: none;
}

.brand-copy {
  display: grid;
  line-height: 1.15;
}

.brand-copy strong {
  font-size: 17px;
  letter-spacing: 0.2em;
}

.brand-copy small {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 10px;
  letter-spacing: 0.055em;
}

.site-nav {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
}

.site-nav a {
  position: relative;
  padding-block: 8px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.025em;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 3px;
  height: 1px;
  background: var(--copper-light);
  transition: right 180ms ease;
}

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

.site-nav a:hover::after {
  right: 0;
}

.language-switch {
  display: flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
}

.language-switch button {
  min-width: 37px;
  min-height: 32px;
  padding: 5px 9px;
  color: rgba(255, 255, 255, 0.68);
  background: transparent;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.language-switch button[aria-pressed="true"] {
  color: var(--navy);
  background: var(--white);
}

.menu-button {
  display: none;
}

.hero {
  position: relative;
  min-height: 800px;
  color: var(--white);
  background: var(--navy);
  overflow: hidden;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5, 17, 29, 0.98) 0%, rgba(6, 21, 35, 0.92) 43%, rgba(6, 21, 35, 0.65) 70%, rgba(6, 21, 35, 0.74) 100%),
    url("hero-mine.jpg") center / cover no-repeat;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.68fr);
  gap: clamp(48px, 7vw, 96px);
  align-items: center;
  min-height: 800px;
  padding: calc(var(--header) + 74px) 0 105px;
}

.eyebrow {
  margin: 0 0 22px;
  color: #9b5c2e;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.eyebrow-light {
  color: var(--copper-light);
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(48px, 5.8vw, 82px);
  font-weight: 690;
  letter-spacing: -0.052em;
  line-height: 0.98;
  text-wrap: balance;
}

.hero-lead {
  max-width: 710px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.74);
  font-size: clamp(17px, 1.65vw, 21px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 51px;
  padding: 13px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 750;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

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

.button-primary {
  color: var(--navy);
  background: var(--copper-light);
}

.button-primary:hover {
  background: #f6c386;
}

.button-ghost {
  color: var(--white);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.23);
}

.button-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.42);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  max-width: 740px;
  margin: 50px 0 0;
  padding: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.hero-metrics div {
  padding: 20px 18px 0 0;
}

.hero-metrics div + div {
  padding-left: 22px;
  border-left: 1px solid rgba(255, 255, 255, 0.16);
}

.hero-metrics dt {
  color: var(--white);
  font-size: clamp(24px, 2.5vw, 34px);
  font-weight: 760;
  line-height: 1;
}

.hero-metrics dd {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
  line-height: 1.45;
}

.portrait-card {
  position: relative;
  width: 100%;
  max-width: 390px;
  margin: 0;
  justify-self: end;
}

.portrait-frame {
  position: relative;
  aspect-ratio: 0.79;
  background: #aab2ba;
  border-radius: 180px 180px 0 0;
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.34);
}

.portrait-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7, 22, 35, 0.38), transparent 40%);
}

.portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 46% center;
}

.portrait-card figcaption {
  position: relative;
  display: grid;
  gap: 3px;
  width: 100%;
  margin: 0;
  padding: 18px 20px;
  color: rgba(255, 255, 255, 0.7);
  background: rgba(13, 39, 61, 0.94);
  border-radius: 0 0 14px 14px;
  box-shadow: var(--shadow);
  font-size: 13px;
}

.portrait-card figcaption strong {
  color: var(--white);
  font-size: 16px;
}

.scroll-cue {
  position: absolute;
  z-index: 2;
  right: 28px;
  bottom: 28px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.scroll-cue span:last-child {
  color: var(--copper-light);
  font-size: 18px;
}

.section {
  padding: 92px 0;
}

.section-heading h2,
.experience-intro h2,
.product-copy h2,
.contact-shell h2 {
  margin: 0;
  font-size: clamp(38px, 4.3vw, 62px);
  font-weight: 680;
  letter-spacing: -0.045em;
  line-height: 1.03;
  text-wrap: balance;
}

.intro-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: clamp(52px, 9vw, 120px);
  align-items: start;
}

.intro-copy {
  padding-top: 32px;
}

.intro-copy p {
  max-width: 650px;
  margin: 0;
  color: var(--slate);
}

.intro-copy p + p {
  margin-top: 24px;
}

.intro-copy .lead {
  color: var(--ink);
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.48;
}

.value-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 78px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.value-strip article {
  padding: 32px 34px 34px 0;
}

.value-strip article + article {
  padding-left: 34px;
  border-left: 1px solid var(--line);
}

.value-strip article > span {
  color: var(--copper);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.value-strip h3 {
  margin: 22px 0 9px;
  font-size: 20px;
}

.value-strip p {
  margin: 0;
  color: var(--slate);
  font-size: 15px;
}

.section-services {
  background: #e9eef1;
}

.section-heading-wide {
  display: grid;
  grid-template-columns: 1.2fr 0.7fr;
  gap: 80px;
  align-items: end;
}

.section-heading-wide > p {
  margin: 0 0 5px;
  color: var(--slate);
  font-size: 18px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 56px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.service-card {
  position: relative;
  min-height: 380px;
  padding: 34px;
  background: rgba(255, 255, 255, 0.62);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: transform 200ms ease, background 200ms ease, box-shadow 200ms ease;
}

.service-card:hover {
  z-index: 1;
  background: var(--white);
  box-shadow: 0 20px 50px rgba(9, 24, 39, 0.1);
  transform: translateY(-4px);
}

.card-index {
  display: block;
  margin-bottom: 52px;
  color: var(--copper);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.service-card h3 {
  margin: 0 0 14px;
  font-size: 23px;
  line-height: 1.2;
}

.service-card p {
  margin: 0 0 20px;
  color: var(--slate);
  font-size: 15px;
}

.service-card ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  color: #344555;
  font-size: 14px;
  list-style: none;
}

.service-card li {
  display: flex;
  gap: 9px;
}

.service-card li::before {
  content: "—";
  color: var(--copper);
}

.section-experience {
  background: var(--paper);
}

.experience-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(55px, 8vw, 104px);
  align-items: start;
}

.experience-intro {
  position: sticky;
  top: calc(var(--header) + 32px);
}

.experience-intro > p:not(.eyebrow) {
  max-width: 440px;
  margin: 28px 0 0;
  color: var(--slate);
  font-size: 17px;
}

.experience-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.experience-card {
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.experience-top {
  display: flex;
  justify-content: space-between;
  gap: 28px;
}

.experience-top > span {
  color: var(--copper);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.location {
  margin: 0 0 7px;
  color: #8a572f !important;
  font-size: 11px !important;
  font-weight: 820;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.experience-card h3 {
  margin: 0;
  font-size: clamp(22px, 2.2vw, 30px);
  line-height: 1.2;
}

.experience-card .role {
  margin: 14px 0 12px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.experience-card > p:last-child {
  max-width: 710px;
  margin: 0;
  color: var(--slate);
  font-size: 16px;
}

.section-product {
  padding: 0;
  color: var(--white);
  background: var(--paper);
}

.product-shell {
  position: relative;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 80px;
  align-items: center;
  min-height: 520px;
  padding: 72px;
  background:
    radial-gradient(circle at 90% 20%, rgba(202, 123, 58, 0.24), transparent 28%),
    linear-gradient(135deg, #0a1928 0%, #102d47 100%);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.product-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(to left, black, transparent 72%);
}

.product-copy,
.product-grid {
  position: relative;
  z-index: 1;
}

.product-copy > p:last-child {
  max-width: 520px;
  margin: 25px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 18px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.product-grid div {
  display: grid;
  min-height: 150px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
}

.product-grid strong {
  color: var(--copper-light);
  font-size: 28px;
  letter-spacing: -0.03em;
}

.product-grid span {
  align-self: end;
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.section-contact {
  padding-top: 36px;
}

.contact-shell {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: clamp(50px, 9vw, 120px);
  align-items: end;
  padding: 84px 0 28px;
}

.contact-shell > div:first-child > p:last-child {
  margin: 26px 0 0;
  color: var(--slate);
  font-size: 18px;
}

.contact-links {
  display: grid;
  border-top: 1px solid var(--line);
}

.contact-links a {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.contact-links span {
  color: var(--slate);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.contact-links strong {
  grid-column: 1;
  font-size: clamp(17px, 2vw, 22px);
  overflow-wrap: anywhere;
}

.contact-links b {
  grid-column: 2;
  grid-row: 1 / 3;
  align-self: center;
  color: var(--copper);
  font-size: 24px;
  font-weight: 400;
  transition: transform 180ms ease;
}

.contact-links a:hover b {
  transform: translate(3px, -3px);
}

.site-footer {
  padding: 38px 0;
  color: rgba(255, 255, 255, 0.62);
  background: var(--navy);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 30px;
  align-items: center;
  font-size: 12px;
}

.footer-inner > div {
  display: grid;
  line-height: 1.35;
}

.footer-inner strong {
  color: var(--white);
  letter-spacing: 0.16em;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  justify-self: end;
  color: var(--copper-light);
  font-weight: 750;
}

@media (max-width: 1020px) {
  .site-nav {
    gap: 15px;
  }

  .site-nav a {
    font-size: 12px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 40px;
  }

  .hero h1 {
    font-size: clamp(46px, 6vw, 64px);
  }

  .portrait-card {
    max-width: 310px;
  }

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

  .product-shell {
    gap: 42px;
    padding: 56px;
  }
}

@media (max-width: 820px) {
  :root {
    --header: 70px;
  }

  .container {
    width: min(calc(100% - 34px), var(--container));
  }

  .header-inner {
    grid-template-columns: 1fr auto auto;
    gap: 13px;
  }

  .brand-copy small {
    display: none !important;
  }

  .menu-button {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 7px 10px;
    color: var(--white);
    background: transparent;
    border: 0;
    cursor: pointer;
    font-size: 12px;
    font-weight: 750;
  }

  .menu-icon {
    display: grid;
    gap: 5px;
    width: 20px;
  }

  .menu-icon span {
    height: 1px;
    background: currentColor;
    transition: transform 180ms ease;
  }

  .menu-button[aria-expanded="true"] .menu-icon span:first-child {
    transform: translateY(3px) rotate(45deg);
  }

  .menu-button[aria-expanded="true"] .menu-icon span:last-child {
    transform: translateY(-3px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    inset: var(--header) 0 auto;
    display: grid;
    gap: 0;
    padding: 18px 17px 24px;
    color: var(--white);
    background: rgba(7, 19, 31, 0.98);
    border-bottom: 1px solid rgba(255, 255, 255, 0.11);
    box-shadow: 0 22px 40px rgba(0, 0, 0, 0.22);
    transform: translateY(-130%);
    visibility: hidden;
    transition: transform 220ms ease, visibility 220ms ease;
  }

  .site-nav[data-open="true"] {
    transform: translateY(0);
    visibility: visible;
  }

  .site-nav a {
    padding: 12px 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 16px;
  }

  .hero,
  .hero-grid {
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 70px;
    padding: calc(var(--header) + 72px) 0 94px;
  }

  .hero-copy {
    max-width: 680px;
  }

  .portrait-card {
    width: min(100%, 480px);
    max-width: none;
    justify-self: start;
  }

  .portrait-frame {
    aspect-ratio: 1.08;
    border-radius: 220px 220px 0 0;
  }

  .scroll-cue {
    display: none;
  }

  .section {
    padding: 72px 0;
  }

  .intro-grid,
  .section-heading-wide,
  .experience-layout,
  .product-shell,
  .contact-shell {
    grid-template-columns: 1fr;
  }

  .intro-copy {
    padding-top: 0;
  }

  .value-strip {
    grid-template-columns: 1fr;
    margin-top: 58px;
  }

  .value-strip article,
  .value-strip article + article {
    padding: 26px 0;
    border-left: 0;
    border-bottom: 1px solid var(--line);
  }

  .value-strip article:last-child {
    border-bottom: 0;
  }

  .section-heading-wide {
    gap: 28px;
  }

  .experience-intro {
    position: static;
  }

  .product-shell {
    gap: 50px;
    min-height: auto;
    border-radius: 24px;
  }

  .contact-shell {
    gap: 54px;
  }
}

@media (max-width: 600px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .brand-mark {
    width: 3px;
    height: 29px;
  }

  .brand-copy strong {
    font-size: 15px;
  }

  .menu-button > span[data-lang] {
    display: none !important;
  }

  .hero-grid {
    gap: 58px;
    padding-top: calc(var(--header) + 55px);
  }

  .hero h1 {
    font-size: clamp(43px, 13vw, 62px);
  }

  .hero-lead {
    font-size: 17px;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
    gap: 0;
    margin-top: 42px;
  }

  .hero-metrics div,
  .hero-metrics div + div {
    display: grid;
    grid-template-columns: 105px 1fr;
    align-items: center;
    padding: 17px 0;
    border-left: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.13);
  }

  .hero-metrics dd {
    margin: 0;
  }

  .portrait-frame {
    aspect-ratio: 0.92;
  }

  .portrait-card figcaption {
    width: 100%;
  }

  .section-heading h2,
  .experience-intro h2,
  .product-copy h2,
  .contact-shell h2 {
    font-size: clamp(36px, 11vw, 50px);
  }

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

  .service-card {
    min-height: auto;
    padding: 28px;
  }

  .card-index {
    margin-bottom: 38px;
  }

  .experience-card {
    padding: 28px 0;
  }

  .product-shell {
    width: 100%;
    padding: 54px 20px;
    border-radius: 0;
  }

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

  .product-grid div {
    min-height: 120px;
  }

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

  .footer-inner p {
    display: none;
  }
}

@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;
  }
}

@media print {
  .site-header,
  .scroll-cue,
  .hero-actions,
  .site-footer {
    display: none;
  }

  .hero,
  .hero-grid {
    min-height: auto;
  }

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

  .hero-backdrop {
    opacity: 0.12;
  }

  .section {
    break-inside: avoid;
    padding: 36px 0;
  }
}