:root {
  --bg: #0b1220;
  --bg-card: rgba(15, 23, 42, 0.85);
  --text: #e8eef7;
  --muted: #a8b8d0;
  --accent: #38bdf8;
  --accent-2: #22d3ee;
  --border: rgba(148, 163, 184, 0.2);
  --max: 1100px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: min(var(--max), 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(11, 18, 32, 0.9);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
}

.logo img {
  height: 48px;
  width: auto;
}

.lang-switch {
  display: flex;
  gap: 0.35rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.2rem;
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
}

.lang-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #041018;
}

.hero {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: center;
  padding: 4rem 0 3rem;
  background-size: cover;
  background-position: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 18, 32, 0.55), rgba(11, 18, 32, 0.92));
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.15;
  margin: 0 0 0.75rem;
}

.hero p {
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  color: var(--muted);
  max-width: 52ch;
  margin: 0;
}

section {
  padding: 3.5rem 0;
}

section:nth-of-type(even) {
  background: rgba(255, 255, 255, 0.02);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 1rem;
}

h3 {
  font-size: 1.25rem;
  margin: 1.5rem 0 0.5rem;
}

h4,
.software-sub {
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin: 1.25rem 0 0.35rem;
}

p {
  color: var(--muted);
  margin: 0 0 1rem;
}

.grid-2 {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
}

.software-list li {
  margin-bottom: 0.85rem;
}

.visual {
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid var(--border);
  min-height: 220px;
  background-size: cover;
  background-position: center;
}

.contact-form {
  display: grid;
  gap: 0.75rem;
  max-width: 520px;
}

.contact-form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  background: rgba(2, 6, 23, 0.6);
  color: var(--text);
  font: inherit;
}

.contact-form button {
  margin-top: 0.5rem;
  border: 0;
  border-radius: 0.5rem;
  padding: 0.8rem 1.2rem;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #041018;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0 2.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer p {
  margin: 0.35rem 0;
}