* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-family-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

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

h1,
h2,
h3 {
  font-family: var(--font-family-heading);
  line-height: 1.12;
}

.expertise-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: 100%;
  height: 78px;
  padding: 0 5%;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  background: rgba(15,17,21,0.85);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.expertise-logo img {
  width: auto;
  height: 40px;
}

.expertise-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
}

.expertise-nav a:hover {
  color: #ffffff;
}

.nav-contact {
  padding: 10px 18px;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-full);
  color: var(--text-main);
  background: rgba(255,255,255,0.05);
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.3s, background 0.3s, border-color 0.3s;
}

.expertise-nav .nav-contact:hover {
  color: var(--text-main);
  background: rgba(34,211,238,0.1);
  border-color: rgba(34,211,238,0.45);
}

.button-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: var(--radius-full);
  color: #ffffff;
  background: var(--brand-gradient);
  font-weight: 700;
}

.expertise-hero {
  min-height: 680px;
  padding: 158px 5% 90px;
  display: grid;
  align-items: center;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 30%, rgba(34,211,238,0.18), transparent 28%),
    radial-gradient(circle at 20% 80%, rgba(129,140,248,0.12), transparent 30%);
}

.expertise-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 0 48%;
  z-index: -2;
  background-image: var(--hero-image);
  background-position: center;
  background-size: cover;
  opacity: 0.28;
  filter: saturate(0.8);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 30%);
  mask-image: linear-gradient(90deg, transparent, #000 30%);
}

.expertise-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, var(--bg-main) 20%, rgba(15,17,21,0.82) 58%, rgba(15,17,21,0.2));
}

.hero-inner,
.content-section,
.related-section,
.expertise-cta {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.breadcrumb {
  display: none;
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb a:hover {
  color: var(--text-main);
}

.breadcrumb span {
  margin: 0 8px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--brand-accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.expertise-hero h1 {
  max-width: 780px;
  margin-bottom: 24px;
  font-size: clamp(44px, 7vw, 78px);
  letter-spacing: -0.04em;
}

.hero-lead {
  max-width: 680px;
  color: var(--text-secondary);
  font-size: clamp(18px, 2vw, 22px);
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius-full);
  font-weight: 700;
}

.content-section {
  padding: 100px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 48px;
}

.section-heading h2,
.expertise-cta h2 {
  margin-bottom: 16px;
  font-size: clamp(32px, 4vw, 50px);
}

.section-heading p,
.expertise-cta p {
  color: var(--text-secondary);
  font-size: 18px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.content-card {
  padding: 30px;
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
}

.content-card h3 {
  margin-bottom: 12px;
  font-size: 23px;
}

.content-card p,
.content-card li {
  color: var(--text-secondary);
}

.content-card ul {
  padding-left: 20px;
}

.content-card li + li {
  margin-top: 8px;
}

.process-section {
  background: #0b0d11;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  counter-reset: process;
}

.process-step {
  padding: 26px;
  border-top: 1px solid rgba(34,211,238,0.45);
  counter-increment: process;
}

.process-step::before {
  content: "0" counter(process);
  display: block;
  margin-bottom: 24px;
  color: var(--brand-accent);
  font-weight: 800;
}

.process-step h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.process-step p {
  color: var(--text-secondary);
  font-size: 15px;
}

.expertise-cta {
  margin-top: 30px;
  margin-bottom: 100px;
  padding: 48px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 88% 20%, rgba(34,211,238,0.16), transparent 36%),
    var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.expertise-cta div {
  max-width: 720px;
}

.related-section {
  padding: 0 0 100px;
}

.related-section h2 {
  margin-bottom: 26px;
  font-size: 30px;
}

.related-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.related-link {
  padding: 24px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.025);
  font-family: var(--font-family-heading);
  font-size: 20px;
  font-weight: 700;
}

.related-link:hover {
  border-color: rgba(34,211,238,0.45);
}

.expertise-footer {
  padding: 42px 5%;
  border-top: 1px solid rgba(255,255,255,0.07);
  background: linear-gradient(to bottom, #0f1115, #050608);
  color: var(--text-muted);
  font-size: 14px;
}

.expertise-footer-inner {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.expertise-footer img {
  width: auto;
  height: 36px;
}

.expertise-footer-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 18px;
}

.expertise-footer a:hover {
  color: var(--text-main);
}

@media (max-width: 850px) {
  .expertise-nav > a:not(.nav-contact) {
    display: none;
  }

  .expertise-hero {
    min-height: auto;
    padding: 126px 22px 72px;
  }

  .expertise-hero::before {
    inset: 0;
    opacity: 0.15;
    -webkit-mask-image: linear-gradient(180deg, #000, transparent 78%);
    mask-image: linear-gradient(180deg, #000, transparent 78%);
  }

  .expertise-hero::after {
    background: rgba(15,17,21,0.76);
  }

  .content-section,
  .related-section {
    padding: 72px 22px;
  }

  .card-grid,
  .process-list,
  .related-links {
    grid-template-columns: 1fr;
  }

  .expertise-cta {
    width: calc(100% - 44px);
    margin-bottom: 72px;
    padding: 30px 24px;
    align-items: flex-start;
    flex-direction: column;
  }

  .expertise-footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .expertise-footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .expertise-header {
    height: 72px;
    padding: 0 16px;
    gap: 12px;
  }

  .expertise-logo {
    min-width: 0;
  }

  .expertise-logo img {
    width: min(190px, 52vw);
    height: auto;
  }

  .nav-contact {
    padding: 8px 12px;
    font-size: 12px;
  }

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

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }
}