:root {
  --blue: #1f5fbf;
  --blue-dark: #164a96;
  --ink: #142033;
  --muted: #5b6778;
  --line: #e4eaf2;
  --bg: #f5f8fc;
  --card: #ffffff;
  --radius: 18px;
  --shadow: 0 14px 40px rgba(20, 32, 51, 0.10);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand img {
  display: block;
  height: 36px;
  width: auto;
}
.nav {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-size: 0.95rem;
  font-weight: 600;
}
.nav a { color: var(--ink); }
.nav a.active { color: var(--blue); }
.lang {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  margin-left: 0.4rem;
}
.lang button {
  border: 0;
  background: #fff;
  color: var(--muted);
  font: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.28rem 0.55rem;
  cursor: pointer;
}
.lang button.on {
  background: var(--blue);
  color: #fff;
}

.wrap { max-width: 980px; margin: 0 auto; padding: 2.2rem 1.25rem 4rem; }

.hero {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.4rem 1.6rem;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 1.6rem 1.7rem;
  box-shadow: var(--shadow);
}
.app-icon {
  width: 88px;
  height: 88px;
  border-radius: 22%;
  box-shadow: 0 8px 20px rgba(31, 95, 191, 0.25);
}
.hero h1 { margin: 0 0 0.25rem; font-size: 2rem; letter-spacing: -0.03em; }
.hero .tag { margin: 0 0 0.9rem; color: var(--muted); }
.cta {
  display: inline-block;
  background: var(--blue);
  color: #fff !important;
  text-decoration: none !important;
  font-weight: 650;
  border-radius: 999px;
  padding: 0.7rem 1.15rem;
}
.cta:hover { background: var(--blue-dark); }

.section-title {
  margin: 2.4rem 0 0.9rem;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.shots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.shot {
  background: #0e1a2b;
  border-radius: 28px;
  padding: 0.7rem 0.7rem 1rem;
  text-align: center;
  color: #d5e4f5;
  box-shadow: var(--shadow);
}
.shot img {
  width: 100%;
  height: auto;
  border-radius: 18px;
  display: block;
}
.shot figcaption {
  margin-top: 0.7rem;
  font-size: 0.82rem;
  font-weight: 600;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
}
.card h2 { margin: 0 0 0.45rem; font-size: 1.02rem; }
.card p { margin: 0; color: var(--muted); }
.card p + p { margin-top: 0.7rem; }

.article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 1.7rem 1.6rem 2rem;
  box-shadow: var(--shadow);
}
.article h1 { margin: 0 0 0.35rem; font-size: 1.85rem; letter-spacing: -0.03em; }
.article .meta { margin: 0 0 1.4rem; color: var(--muted); }
.article h2 { margin: 1.5rem 0 0.4rem; font-size: 1.05rem; }
.article p { color: #334155; }
code { font-size: 0.9em; }

.footer {
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 1.3rem 1.25rem 1.8rem;
  color: var(--muted);
  font-size: 0.88rem;
}
.footer-inner {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}
.footer img { height: 24px; width: auto; opacity: 0.9; }

[hidden] { display: none !important; }

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; }
  .shots, .grid { grid-template-columns: 1fr; }
  .header-inner { flex-wrap: wrap; }
  .brand img { height: 30px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}