:root {
  --bg: #f5f8fc;
  --surface: #ffffff;
  --surface-soft: #eef6ff;
  --text: #14213a;
  --muted: #5b6980;
  --blue: #155eef;
  --teal: #08bfa9;
  --border: #dce5f0;
  --header: #09152d;
  --shadow: 0 14px 40px rgba(31, 55, 92, .08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}
a { color: var(--blue); }
header {
  background: var(--header);
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.header-inner, main, footer {
  width: min(100% - 32px, 960px);
  margin-inline: auto;
}
.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand-wrap {
  display: flex;
  align-items: center;
  gap: 13px;
}
.logo {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 3px solid var(--teal);
  box-shadow: inset 0 0 0 6px var(--header), inset 0 0 0 9px #2768ff;
  font-weight: 800;
  color: #4c7aff;
}
.brand {
  font-size: 24px;
  font-weight: 750;
  letter-spacing: .1px;
}
.publisher {
  color: #b9c6dc;
  font-size: 13px;
}
.header-controls {
  display: flex;
  align-items: center;
  gap: 18px;
}
nav {
  display: flex;
  gap: 18px;
}
nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}
nav a:hover { text-decoration: underline; }
.language-select {
  background: #132444;
  color: #fff;
  border: 1px solid #405579;
  border-radius: 8px;
  padding: 8px 10px;
  font: inherit;
}
main { padding: 42px 0 54px; }
.hero {
  background:
    radial-gradient(circle at 92% 16%, rgba(8,191,169,.15), transparent 26%),
    radial-gradient(circle at 10% 90%, rgba(21,94,239,.12), transparent 29%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 38px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}
.eyebrow {
  color: var(--blue);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: 13px;
}
h1, h2, h3 { line-height: 1.25; }
h1 { font-size: clamp(34px, 6vw, 52px); margin: 10px 0 14px; }
h2 { font-size: 25px; margin: 0 0 15px; }
h3 { font-size: 18px; margin-top: 26px; }
.lead { font-size: 19px; color: var(--muted); max-width: 760px; }
.store-cta { margin-top: 28px; }
.store-button {
  appearance: none;
  border: 1px solid #0f3f9c;
  border-radius: 13px;
  background: linear-gradient(135deg, #155eef, #0f4ac0);
  color: #fff;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 14px 21px;
  min-width: 252px;
  box-shadow: 0 9px 20px rgba(21,94,239,.22);
  cursor: not-allowed;
  opacity: 1;
}
.store-button-kicker { font-size: 12px; font-weight: 650; letter-spacing: .055em; text-transform: uppercase; color: #d9e7ff; }
.store-button-title { font-size: 16px; font-weight: 750; }
.product-preview {
  margin: 0 0 24px;
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.preview-copy { margin-bottom: 22px; }
.preview-copy h2 { margin: 7px 0 10px; font-size: clamp(28px, 4vw, 36px); }
.preview-copy .lead { margin: 0; }
.product-screenshot-frame {
  overflow: hidden;
  border: 1px solid #ced9e9;
  border-radius: 13px;
  background: #e9eef5;
  box-shadow: 0 13px 30px rgba(31,55,92,.14);
}
.product-screenshot-frame img { display: block; width: 100%; height: auto; }
.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 20px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 27px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.notice {
  border-left: 4px solid var(--teal);
  background: #ecfbf8;
  padding: 15px 17px;
  border-radius: 9px;
}
.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 12px 22px;
  padding: 0;
  list-style: none;
}
.feature-list li::before {
  content: "✓";
  color: var(--teal);
  font-weight: 800;
  margin-right: 9px;
}
.contact-box {
  background: var(--surface-soft);
  border: 1px solid #cee0fb;
  border-radius: 12px;
  padding: 18px;
}
footer {
  color: var(--muted);
  padding: 0 0 38px;
  font-size: 14px;
}
.footer-links a { margin-right: 16px; }
.small { font-size: 14px; color: var(--muted); }
@media (max-width: 760px) {
  .header-inner { align-items: flex-start; padding: 16px 0; flex-direction: column; }
  .header-controls { width: 100%; justify-content: space-between; }
  nav { gap: 12px; flex-wrap: wrap; }
  .hero { padding: 26px 22px; }
  .product-preview { padding: 22px; }
  .cards, .feature-list { grid-template-columns: 1fr; }
}