:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f7f9;
  --color-text: #14202a;
  --color-text-muted: #566573;
  --color-border: #e3e9ed;
  --color-accent: #39b3e6;
  --color-accent-dark: #2493c4;

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --container-width: 960px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f1417;
    --color-bg-alt: #161d22;
    --color-text: #eef2f5;
    --color-text-muted: #9aa8b2;
    --color-border: #263139;
    --color-accent: #39b3e6;
    --color-accent-dark: #6cc9ee;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

a {
  color: var(--color-accent-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

.brand {
  display: inline-flex;
  align-items: center;
}

.logo {
  height: 24px;
  width: auto;
  display: block;
}

@media (prefers-color-scheme: dark) {
  .logo {
    filter: invert(1) hue-rotate(180deg) saturate(0.85) brightness(1.05);
  }
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.site-nav a {
  color: var(--color-text-muted);
}

.site-nav a:hover {
  color: var(--color-text);
  text-decoration: none;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.lang-link {
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  color: var(--color-text-muted);
}

.lang-link:hover {
  color: var(--color-text);
  text-decoration: none;
  background: var(--color-bg-alt);
}

.lang-link.is-active {
  color: #fff;
  background: var(--color-accent);
}

.lang-link.is-active:hover {
  background: var(--color-accent-dark);
}

/* Hero */

.hero {
  padding: 5rem 0 3.5rem;
  background:
    radial-gradient(circle at 15% -20%, color-mix(in srgb, var(--color-accent) 18%, transparent), transparent 55%),
    var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.hero .lead {
  margin: 0;
  max-width: 40rem;
  font-size: 1.15rem;
  color: var(--color-text-muted);
}

/* Section title */

.section-title {
  margin: 0 0 2.25rem;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-align: center;
}

/* Services */

.services {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--color-border);
  scroll-margin-top: 4.5rem;
}

.service-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.service-row {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  background: var(--color-bg-alt);
}

.service-icon {
  flex: none;
  width: 1.375rem;
  height: 1.375rem;
  margin-top: 0.2rem;
  color: var(--color-accent-dark);
}

.service-text h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.service-text p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

/* Approach */

.approach {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--color-border);
  scroll-margin-top: 4.5rem;
}

.approach-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.approach-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.approach-icon {
  flex: none;
  width: 1.375rem;
  height: 1.375rem;
  margin-top: 0.2rem;
  color: var(--color-accent-dark);
}

.approach-item h3 {
  margin: 0 0 0.4rem;
  font-size: 1.02rem;
  font-weight: 600;
}

.approach-item p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

/* Use cases */

.usecases {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--color-border);
  scroll-margin-top: 4.5rem;
}

.usecase-grid {
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

.usecase-card {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 2rem;
  align-items: center;
}

.usecase-image {
  width: 100%;
  height: auto;
  display: block;
}

.usecase-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.usecase-badge {
  display: inline-block;
  align-self: flex-start;
  margin-bottom: 0.75rem;
  padding: 0.15rem 0.4rem;
  border-radius: 999px;
  background: var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.usecase-body h3 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  font-weight: 600;
}

.usecase-body p {
  margin: 0 0 0.9rem;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.usecase-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.usecase-tags li {
  font-size: 0.6rem;
  font-weight: 500;
  padding: 0.15rem 0.4rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

@media (max-width: 720px) {
  .usecase-card {
    grid-template-columns: 1fr;
  }

  .usecase-image {
    aspect-ratio: 16 / 9;
  }
}

/* CTA */

.cta {
  padding: 4rem 0;
  scroll-margin-top: 4.5rem;
}

.cta-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.75rem;
}

.cta-text .section-title {
  margin-bottom: 0.5rem;
  text-align: left;
}

.cta-text p {
  margin: 0.25rem 0 0;
  color: var(--color-text-muted);
}

.cta-location {
  font-size: 0.85rem;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
  white-space: nowrap;
}

.button:hover {
  background: var(--color-accent-dark);
  text-decoration: none;
}

.button-icon {
  width: 1.1rem;
  height: 1.1rem;
}

.inline-email {
  font-weight: 600;
}

/* Page header (non-home pages) */

.page-header {
  padding: 3.5rem 0 1rem;
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  margin: 0;
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Content */

.content {
  padding: 3.5rem 0 5rem;
}

.prose {
  max-width: 42rem;
}

.prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 2.5rem 0 0.75rem;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p {
  margin: 0 0 1rem;
  color: var(--color-text);
}

.prose ol {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

.prose ul {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
}

.prose ul li {
  padding: 0.85rem 0;
  font-size: 0.95rem;
}

.prose ul li + li {
  border-top: 1px solid var(--color-border);
}

.prose ul li strong {
  color: var(--color-text-muted);
  font-weight: 600;
  margin-right: 0.4rem;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.75rem 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.site-footer p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.85rem;
}

.footer-nav a {
  color: var(--color-text-muted);
}

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

/* Small screens */

@media (max-width: 480px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .site-nav {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 1.25rem;
    padding-top: 0.5rem;
  }
}