:root {
  /* Colors */
  --color-bg: #111;
  --color-accent: #00ffef;
  --color-text: #eee;
  --color-muted: #aaa;
  --color-dark-text: #111;
  --color-light: #fff;

  /* Spacing */
  --space-0: 0;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;

  /* Radii */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;

  /* Shadows */
  --shadow-sm: 0 2px 6px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);

  /* Transition */
  --transition: 0.2s ease;

  /* Breakpoints */
  --break-sm: 640px;
  --break-md: 1024px;
  --break-lg: 1400px;
}

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

html {
  font-size: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont,
               "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

/* Links */
a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover,
a:focus {
  color: var(--color-text);
}

/* Layout */
.container {
  width: 90%;
  max-width: var(--break-lg);
  margin: 0 auto;
  padding: var(--space-4) 0;
}

/* Header */
.site-header {
  background: var(--color-bg);
  border-bottom: 2px solid var(--color-accent);
  padding: var(--space-2) 0;
}
.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.logo img {
  max-height: 40px;
}
.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
}
.main-nav {
  flex-grow: 1;
}
.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-link {
  color: var(--color-text);
  font-weight: 500;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-link:hover,
.nav-link:focus,
.nav-link.is-current {
  color: var(--color-accent);
  background: rgba(0,255,239,0.1);
  outline: 2px solid var(--color-accent);
}

/* Hero */
.hero,
.page-hero {
  position: relative;
  background: var(--color-accent);
  color: var(--color-dark-text);
  padding: var(--space-6) 0;
  text-align: center;
  overflow: hidden;
}
.hero-inner {
  max-width: 800px;
  margin: 0 auto;
}
.hero-title,
.page-hero-title {
  font-size: clamp(2.5rem, 8vw, 4rem);
  margin-bottom: var(--space-2);
  line-height: 1.2;
}
.hero-subtitle,
.page-hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--space-4);
}

/* Sections */
.section {
  background: var(--color-bg);
}
.section-alt {
  background: #1a1a1a;
}
.section-title {
  font-size: 2rem;
  margin-bottom: var(--space-2);
  text-align: center;
  color: var(--color-accent);
}
.section-intro {
  font-size: 1.125rem;
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-4);
  color: var(--color-muted);
}

/* Cards */
.card-grid {
  display: grid;
  gap: var(--space-3);
}
@media (min-width: var(--break-sm)) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: var(--break-md)) {
  .card-grid { grid-template-columns: repeat(3, 1fr); }
}
.card {
  background: var(--color-bg);
  border: 1px solid #2a2a2a;
  border-radius: var(--radius-md);
  padding: var(--space-3);
  transition: var(--transition);
}
.card:hover,
.card:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background: #181818;
}
.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-1);
  color: var(--color-accent);
}
.card-text {
  font-size: 1rem;
  color: var(--color-text);
}

/* Process steps */
.steps {
  display: grid;
  gap: var(--space-4);
}
@media (min-width: var(--break-sm)) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: var(--break-md)) {
  .steps { grid-template-columns: repeat(3, 1fr); }
}
.step {
  text-align: center;
}
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--color-accent);
  color: var(--color-dark-text);
  font-weight: 700;
  border-radius: 50%;
  font-size: 1.25rem;
  margin-bottom: var(--space-2);
}
.step-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-1);
  color: var(--color-accent);
}
.step-text {
  font-size: 1rem;
  color: var(--color-text);
}

/* FAQ */
.faq-list {
  border-top: 1px solid #2a2a2a;
}
.faq-item {
  border-bottom: 1px solid #2a2a2a;
  padding: var(--space-3) 0;
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-text);
}
.faq-question::after {
  content: "▸";
  transition: transform var(--transition);
  display: inline-block;
  width: 1em;
  text-align: center;
}
.faq-item[open] .faq-question::after {
  transform: rotate(90deg);
}
.faq-answer {
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px solid #2a2a2a;
  color: var(--color-muted);
  font-size: 1rem;
}

/* CTA */
.cta-band {
  background: var(--color-accent);
  color: var(--color-dark-text);
  text-align: center;
  padding: var(--space-5) 0;
}
.cta-title {
  font-size: 2rem;
  margin-bottom: var(--space-2);
}
.cta-text {
  font-size: 1.25rem;
  margin-bottom: var(--space-3);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn,
.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: var(--space-2) var(--space-3);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
  font-size: 1rem;
}
.btn {
  background: var(--color-bg);
  color: var(--color-text);
  border: 2px solid var(--color-accent);
}
.btn:hover,
.btn:focus {
  background: var(--color-accent);
  color: var(--color-dark-text);
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-dark-text);
}
.btn-primary:hover,
.btn-primary:focus {
  background: var(--color-bg);
  color: var(--color-text);
}
.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}
.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--color-accent);
  color: var(--color-dark-text);
}

/* Contact details */
.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-1);
}
.contact-label {
  font-weight: 600;
  min-width: 80px;
  color: var(--color-muted);
}
.contact-value {
  color: var(--color-text);
  word-break: break-all;
}
.contact-value a {
  color: var(--color-accent);
}

/* Footer */
.site-footer {
  background: var(--color-bg);
  border-top: 2px solid var(--color-accent);
  padding: var(--space-4) 0;
}
.footer-inner {
  display: grid;
  gap: var(--space-3);
  text-align: center;
}
@media (min-width: var(--break-sm)) {
  .footer-inner { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: var(--break-md)) {
  .footer-inner { grid-template-columns: repeat(3, 1fr); }
}
.footer-col {}
.footer-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-2);
  color: var(--color-accent);
}
.footer-note {
  font-size: 0.9rem;
  color: var(--color-muted);
}