:root {
  --color-bg: #0f172a;
  --color-bg-subtle: #1e293b;
  --color-border: #334155;
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-accent: #38bdf8;
  --color-accent-hover: #7dd3fc;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --page-padding: 1.25rem;
  --header-height: 3.25rem;
  --space-section: clamp(1.75rem, 5vw, 2.5rem);
}

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

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--color-accent-hover);
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3 {
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(1.75rem, 6vw, 2.25rem);
  margin: 0 0 0.75rem;
}

h2 {
  font-size: clamp(1.375rem, 4vw, 1.625rem);
  margin: 0 0 0.5rem;
}

h3 {
  font-size: 1.0625rem;
  margin: 0 0 0.5rem;
}

p {
  margin: 0 0 1rem;
}

p:last-child {
  margin-bottom: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 100;
  padding: 0.625rem 1rem;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  top: 0.75rem;
}

.page-width {
  width: 100%;
  max-width: 36rem;
  margin-inline: auto;
  padding-inline: var(--page-padding);
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1rem;
}

.logo {
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  white-space: nowrap;
}

.logo:hover {
  color: var(--color-text);
}

.site-nav ul {
  display: flex;
  gap: 0.125rem;
}

.site-nav a {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.625rem;
  min-height: 2.75rem;
  min-width: 2.75rem;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  text-decoration: none;
}

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

/* Hero */

.hero {
  padding: var(--space-section) 0;
}

.hero-lead {
  color: var(--color-text-muted);
}

.hero-region {
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.hero-aside {
  margin-top: 1rem;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

@media (min-width: 480px) {
  .hero-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-bg);
}

.btn-secondary {
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

/* Sections */

.section-intro {
  color: var(--color-text-muted);
}

.services {
  padding-block: var(--space-section);
  border-top: 1px solid var(--color-border);
}

.services-layout {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.25rem;
}

.service-card {
  width: 100%;
  max-width: 26rem;
  padding: 1.125rem 1.25rem;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
}

.service-card h3 {
  margin-bottom: 0.5rem;
}

.service-card-intro {
  margin-bottom: 0.875rem;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.service-list li {
  position: relative;
  padding: 0.625rem 0 0.625rem 1.125rem;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
}

.service-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.service-list li:first-child {
  padding-top: 0;
}

.service-list li::before {
  content: "–";
  position: absolute;
  inset-inline-start: 0;
  color: var(--color-accent);
}

.info-grid {
  border-top: 1px solid var(--color-border);
}

.about,
.contact {
  padding: var(--space-section) var(--page-padding);
}

.about p {
  color: var(--color-text-muted);
}

.about-columns {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.contact-list a {
  display: inline-block;
  min-height: 2.25rem;
  padding-block: 0.25rem;
  font-size: 1.0625rem;
  font-weight: 500;
  text-decoration: none;
  word-break: break-word;
}

.contact-list a:hover {
  text-decoration: underline;
}

/* Footer */

.site-footer {
  padding: 1rem 0 1.5rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.footer-inner p {
  margin: 0;
}

/* Desktop — full viewport width */

@media (min-width: 768px) {
  :root {
    --page-padding: clamp(1.5rem, 4vw, 3rem);
    --header-height: 3.75rem;
    --space-section: clamp(2rem, 4vw, 3rem);
  }

  .page-width {
    max-width: none;
  }

  h1 {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    letter-spacing: -0.025em;
    margin-bottom: 0.625rem;
  }

  .about h2,
  .contact h2 {
    font-size: clamp(1.375rem, 2vw, 1.625rem);
    margin-bottom: 0.875rem;
  }

  .logo {
    font-size: 1.0625rem;
  }

  .site-nav ul {
    gap: 0.25rem;
  }

  .site-nav a {
    padding: 0.5rem 1rem;
    font-size: 0.9375rem;
  }

  .hero {
    padding-block: var(--space-section);
  }

  .hero-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: clamp(1.5rem, 5vw, 4rem);
    align-items: end;
    width: 100%;
  }

  .hero-lead {
    font-size: 1.0625rem;
    max-width: 34rem;
    margin-top: 0.75rem;
  }

  .hero-aside {
    margin-top: 0;
    padding-bottom: 0;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    min-width: 11rem;
  }

  .btn {
    width: 100%;
  }

  .section-header--simple {
    display: block;
    margin-bottom: 1.25rem;
    padding-bottom: 0;
    border-bottom: none;
  }

  .section-header--simple h2 {
    font-size: clamp(1.375rem, 2.5vw, 1.875rem);
    margin: 0;
  }

  .section-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
    gap: clamp(1.5rem, 5vw, 4rem);
    align-items: start;
    margin-bottom: 1.5rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--color-border);
  }

  .section-header h2 {
    font-size: clamp(1.375rem, 2.5vw, 1.875rem);
    text-transform: none;
    letter-spacing: -0.02em;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
  }

  .section-header .section-intro {
    font-size: 1.0625rem;
    margin: 0;
  }

  .services-layout {
    flex-direction: row;
    flex-wrap: wrap;
    gap: clamp(1.25rem, 3vw, 2rem);
  }

  .service-card {
    width: auto;
    flex: 0 1 26rem;
  }

  .info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .about {
    padding-block: var(--space-section);
    padding-inline: var(--page-padding) clamp(1rem, 3vw, 2rem);
  }

  .contact {
    padding-block: var(--space-section);
    padding-inline: clamp(1rem, 3vw, 2rem) var(--page-padding);
    background: var(--color-bg-subtle);
    border-inline-start: 1px solid var(--color-border);
  }

  .about-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(1.25rem, 3vw, 2rem);
    margin-top: 0;
  }

  .contact .section-intro {
    margin-bottom: 0.75rem;
  }

  .contact-list {
    gap: 0.375rem;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .service-card {
    flex-basis: 24rem;
  }
}

@media (min-width: 1400px) {
  .hero-grid {
    grid-template-columns: 1.2fr 1fr;
  }

  .hero-lead {
    max-width: none;
    font-size: 1.125rem;
  }
}