:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #64748b;
  --border: #d9e2ec;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --code-bg: #eef2f7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 20px 56px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-subtitle {
  font-size: 0.9rem;
  color: var(--muted);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.home-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--card);
  padding: 8px 14px;
  border-radius: 999px;
  transition: 0.2s ease;
}

.home-link:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.language-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  background: var(--card);
}

.language-toggle button {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 8px 14px;
  font-weight: 700;
  cursor: pointer;
}

.language-toggle button.active {
  background: var(--accent);
  color: #ffffff;
}

.hero {
  background: linear-gradient(135deg, #ffffff 0%, #eef4ff 100%);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 44px;
  margin-bottom: 28px;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.06);
}

.eyebrow {
  color: var(--accent);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  margin-bottom: 14px;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.lead {
  max-width: 820px;
  margin-top: 24px;
  font-size: 1.15rem;
  color: #334155;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 28px 0;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.04);
}

.card h2,
.card h3 {
  margin-top: 0;
  line-height: 1.25;
}

.card h2 {
  font-size: 1.45rem;
}

.card h3 {
  font-size: 1.05rem;
}

.card p {
  color: var(--muted);
  margin-bottom: 0;
}

.wide {
  grid-column: span 2;
}

.full {
  grid-column: 1 / -1;
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.tech-list li {
  background: var(--code-bg);
  border: 1px solid var(--border);
  color: #334155;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
}

.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin-top: 20px;
}

.flow-step {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  font-size: 0.92rem;
  font-weight: 650;
  text-align: center;
  color: #334155;
}

.screenshot-card h2 {
  margin-bottom: 16px;
}

.screenshot-img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
  cursor: zoom-in;
}

.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0, 0, 0, 0.88);
  align-items: center;
  justify-content: center;
  padding: 24px;
  cursor: zoom-out;
}

.lightbox.open {
  display: flex;
}

.lightbox-img {
  max-width: 100%;
  max-height: 90vh;
  border-radius: 8px;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.6);
  cursor: default;
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 20px;
  padding: 4px 10px;
  border: none;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.15s, background 0.15s;
}

.lightbox-close:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.25);
}

footer {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}

[data-lang] {
  display: none;
}

[data-lang].active {
  display: block;
}

@media (max-width: 860px) {
  header {
    align-items: flex-start;
    flex-direction: column;
  }

  .top-actions {
    justify-content: flex-start;
  }

  .hero {
    padding: 30px;
  }

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

  .wide,
  .full {
    grid-column: auto;
  }

  .flow {
    grid-template-columns: 1fr;
  }
}