:root {
  --ink: #111216;
  --muted: #646a73;
  --line: #dde1e7;
  --paper: #f6f3ef;
  --white: #ffffff;
  --charcoal: #171a20;
  --red: #e13f2b;
  --gold: #c79a43;
  --teal: #166a64;
  --blue: #244c89;
  --shadow: 0 24px 70px rgba(17, 18, 22, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.55;
}

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

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 clamp(20px, 4vw, 56px);
  color: var(--white);
  background: rgba(17, 18, 22, 0.68);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 180px;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 6px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 15px;
  line-height: 1.1;
}

.brand small {
  color: rgba(255, 255, 255, 0.68);
  font-size: 12px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
}

.nav a {
  transition: color 0.2s ease;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-toggle,
.menu-toggle {
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 36px;
  padding: 3px;
  border-radius: 6px;
  cursor: pointer;
}

.lang-toggle span {
  display: grid;
  place-items: center;
  min-width: 44px;
  height: 28px;
  border-radius: 4px;
  font-size: 12px;
}

.lang-toggle .active {
  color: var(--ink);
  background: var(--white);
}

.menu-toggle {
  display: none;
  width: 38px;
  height: 36px;
  border-radius: 6px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 17px;
  height: 2px;
  margin: 5px auto;
  background: var(--white);
}

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  color: var(--white);
  background: #0f1115;
}

.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media {
  background-image: url("assets/hero.jpg");
  background-size: cover;
  background-position: center;
  filter: saturate(1.05);
  transform: scale(1.02);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(12, 13, 17, 0.92) 0%, rgba(12, 13, 17, 0.68) 43%, rgba(12, 13, 17, 0.16) 100%),
    linear-gradient(0deg, rgba(12, 13, 17, 0.88) 0%, rgba(12, 13, 17, 0) 45%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 150px 0 92px;
}

.eyebrow,
.section-label,
.case-tag {
  color: var(--gold);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 840px;
  margin: 14px 0 22px;
  font-size: clamp(44px, 7vw, 84px);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 690px;
  margin: 0 0 34px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(17px, 2vw, 21px);
}

.hero-actions,
.contact-box {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 6px;
  font-weight: 720;
  transition: transform 0.2s ease, background 0.2s ease;
}

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

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

.button.secondary {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: min(1120px, calc(100% - 40px));
  margin: -46px auto 0;
  position: relative;
  z-index: 3;
  background: var(--white);
  box-shadow: var(--shadow);
}

.metrics div {
  min-height: 116px;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.metrics div:last-child {
  border-right: 0;
}

.metrics strong {
  display: block;
  margin-bottom: 6px;
  color: var(--red);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1;
}

.metrics span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 96px 0;
}

.split,
.global {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 7vw, 92px);
  align-items: start;
}

.section h2,
.contact h2 {
  margin: 10px 0 0;
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

.lead-stack p,
.section-heading p,
.proof-copy p,
.global-copy p,
.contact-box p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.lead-stack {
  display: grid;
  gap: 18px;
  padding-top: 34px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: 40px;
  align-items: end;
  margin-bottom: 34px;
}

.section-heading.compact {
  display: block;
  max-width: 760px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.service-grid article {
  min-height: 288px;
  padding: 26px;
  background: var(--white);
}

.service-grid span,
.steps span {
  display: inline-block;
  margin-bottom: 34px;
  color: var(--teal);
  font-weight: 800;
}

.service-grid h3,
.case-card h3,
.steps h3 {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.18;
}

.service-grid p,
.case-card p,
.steps p,
.global-copy li {
  margin: 0;
  color: var(--muted);
}

.proof-band {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 44px;
  align-items: center;
}

.image-panel {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.image-panel img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.proof-copy {
  padding: 28px 0;
}

.proof-copy h2 {
  margin-bottom: 22px;
}

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

.case-card {
  overflow: hidden;
  border-radius: 8px;
  background: var(--white);
  border: 1px solid var(--line);
}

.case-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--charcoal);
}

.case-card div {
  padding: 22px;
}

.case-card strong {
  display: block;
  margin-top: 18px;
  color: var(--red);
  font-size: 20px;
}

.global {
  align-items: center;
}

.global-copy ul {
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.global-copy li {
  padding: 14px 0 14px 18px;
  border-left: 3px solid var(--teal);
  background: rgba(255, 255, 255, 0.5);
}

.global-visual {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.global-visual img {
  width: 100%;
  min-height: 460px;
  object-fit: cover;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.steps li {
  min-height: 230px;
  padding: 26px;
  background: var(--white);
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.62fr);
  gap: 46px;
  align-items: center;
  padding: 76px clamp(20px, 7vw, 80px);
  color: var(--white);
  background: var(--charcoal);
}

.contact h2 {
  max-width: 820px;
}

.contact-box {
  flex-direction: column;
  align-items: flex-start;
}

.contact-box p {
  color: rgba(255, 255, 255, 0.72);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 24px clamp(20px, 4vw, 56px);
  color: rgba(255, 255, 255, 0.7);
  background: #0c0d10;
}

.footer p {
  margin: 0;
}

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

.legal-page {
  background: var(--white);
}

.legal-main {
  width: min(860px, calc(100% - 40px));
  margin: 0 auto;
  padding: 120px 0 80px;
}

.legal-main h1 {
  margin: 0 0 18px;
  font-size: clamp(36px, 6vw, 60px);
  line-height: 1.05;
}

.legal-main h2 {
  margin: 34px 0 10px;
  font-size: 22px;
}

.legal-main p,
.legal-main li {
  color: var(--muted);
}

.legal-main a {
  color: var(--red);
  font-weight: 700;
}

@media (max-width: 980px) {
  .nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 20px 24px;
    background: rgba(17, 18, 22, 0.96);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .menu-toggle {
    display: block;
  }

  .metrics,
  .service-grid,
  .case-grid,
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .split,
  .proof-band,
  .global,
  .section-heading,
  .contact {
    grid-template-columns: 1fr;
  }

  .lead-stack {
    padding-top: 0;
  }
}

@media (max-width: 640px) {
  .site-header {
    height: 66px;
    padding: 0 14px;
  }

  .brand {
    min-width: 0;
  }

  .brand span {
    display: none;
  }

  .nav {
    top: 66px;
  }

  .lang-toggle span {
    min-width: 38px;
  }

  .hero {
    min-height: 86vh;
  }

  .hero-inner {
    width: calc(100% - 28px);
    padding-bottom: 56px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .metrics,
  .service-grid,
  .case-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .metrics {
    width: calc(100% - 28px);
  }

  .metrics div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .section {
    width: calc(100% - 28px);
    padding: 72px 0;
  }

  .section h2,
  .contact h2 {
    font-size: 34px;
  }

  .global-visual img {
    min-height: 280px;
  }

  .contact {
    padding: 56px 20px;
  }

  .footer {
    display: block;
  }

  .footer p + p {
    margin-top: 8px;
  }
}