:root {
  --bg: #0e1116;
  --surface: #161b22;
  --surface-2: #1c232d;
  --border: #2a3340;
  --text: #e6ebf2;
  --text-dim: #9aa7b4;
  --accent: #2f81f7;
  --accent-hover: #5499ff;
  --radius: 12px;
  --maxw: 1080px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(14, 17, 22, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.logo {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo span { color: var(--accent); }

.nav { display: flex; gap: 24px; }

.nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

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

.lang-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.lang-btn {
  background: transparent;
  color: var(--text-dim);
  border: none;
  padding: 6px 12px;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

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

/* Hero */
.hero {
  padding: 96px 0 80px;
  background:
    radial-gradient(ellipse 70% 50% at 50% -10%, rgba(47, 129, 247, 0.18), transparent),
    var(--bg);
  text-align: center;
}

.eyebrow {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 800px;
  margin: 0 auto 20px;
}

.lead {
  color: var(--text-dim);
  font-size: 1.15rem;
  max-width: 620px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.15s ease;
}

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

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-ghost:hover { background: var(--surface); }

.btn-lg { padding: 16px 36px; font-size: 1.05rem; }

/* Sections */
.section { padding: 80px 0; }

.section-alt {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section h2 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.section-sub {
  color: var(--text-dim);
  margin-bottom: 40px;
  max-width: 560px;
}

/* Service cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.card p {
  color: var(--text-dim);
  font-size: 0.95rem;
}

.card-featured {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(47, 129, 247, 0.12), var(--surface) 60%);
  border-color: rgba(47, 129, 247, 0.45);
}

.card-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
}

/* Process steps */
.steps {
  list-style: none;
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.steps li {
  counter-increment: step;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  color: var(--accent);
  font-weight: 800;
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.steps h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.steps p {
  color: var(--text-dim);
  font-size: 0.92rem;
}

/* Contact */
.contact { text-align: center; }

.contact p { color: var(--text-dim); }

.contact .btn { margin-top: 24px; }

.contact-alt {
  margin-top: 16px;
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* Mobile */
@media (max-width: 640px) {
  .nav { display: none; }
  .hero { padding: 64px 0 56px; }
  .section { padding: 56px 0; }
}