:root {
  --bg: #07111c;
  --panel: rgba(7, 29, 73, 0.72);
  --line: rgba(255, 255, 255, 0.18);
  --text: #f7fafb;
  --muted: rgba(247, 250, 251, 0.72);
  --accent: #f2d34b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(circle at 20% 0%, #123052 0, var(--bg) 42%);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

.help-shell {
  width: min(860px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 42px;
}

.help-header {
  margin-bottom: 18px;
}

.help-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.help-header a {
  display: inline-block;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  text-transform: uppercase;
}

.lang-switch {
  display: flex;
  gap: 6px;
}

.lang-switch button {
  min-width: 38px;
  padding: 6px 8px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 6px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  font-size: 12px;
  font-weight: 800;
  cursor: pointer;
}

.lang-switch button.is-active {
  color: #07111c;
  border-color: var(--accent);
  background: var(--accent);
}

.help-logo {
  display: block;
  width: min(280px, 72vw);
  height: auto;
  margin: 0 0 14px;
  filter:
    brightness(0)
    invert(1)
    drop-shadow(0 2px 3px rgba(0, 0, 0, 0.85));
}

.help-header span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

h1 {
  margin: 4px 0 8px;
  font-size: clamp(30px, 6vw, 54px);
  line-height: 1;
}

h2 {
  margin: 0 0 8px;
  color: #fff;
  font-size: 18px;
  text-transform: uppercase;
}

p {
  margin: 0 0 10px;
  color: var(--muted);
}

section {
  margin: 0 0 12px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

figure {
  margin: 4px 0 14px;
}

figure img {
  display: block;
  width: min(100%, 620px);
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0b1622;
}

.app-install-card {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
}

.app-install-icon {
  width: 92px;
  height: 92px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #071d49;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.32);
}

.app-install-card a {
  color: var(--accent);
  font-weight: 700;
}

ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

li {
  margin: 5px 0;
}

strong {
  color: #fff;
}

@media (max-width: 640px) {
  .help-shell {
    width: min(100% - 22px, 860px);
    padding-top: 16px;
  }

  .help-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  section {
    padding: 14px;
  }

  .app-install-card {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 12px;
  }

  .app-install-icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
  }
}