.brand {
  display:inline-flex;
  align-items:center;
  gap:12px;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
}
.brand-mark {
  width:36px;
  height:36px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.14);
  display:grid;
  place-items:center;
  background: rgba(255,255,255,.04);
}
.brand-mark span { color: currentColor; font-size: .88rem; }
.btn {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:46px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid transparent;
  font-weight:600;
  cursor:pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
  white-space:nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--site-brand);
  color: var(--accent-contrast);
  border-color: transparent;
  box-shadow: 0 10px 28px rgba(225, 29, 46, 0.22);
}
.btn-primary:hover { background: var(--site-brand-hover); }
.btn-secondary {
  border-color: rgba(255,255,255,.14);
  background: rgba(255,255,255,.02);
  color: var(--site-text-main);
}
.btn-secondary:hover {
  border-color: rgba(255,255,255,.24);
  color: var(--site-text-main);
  background: rgba(255,255,255,.05);
}
.icon-btn {
  width:42px;
  height:42px;
  display:inline-grid;
  place-items:center;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: inherit;
  cursor:pointer;
}
.eyebrow {
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
  color: var(--muted);
  font-size:.78rem;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
}
.eyebrow::before {
  content:"";
  width:24px;
  height:1px;
  background: currentColor;
  opacity: .45;
}
.feature-grid { display:grid; gap:20px; }
.feature-grid--4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.feature-grid--2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.feature-card { padding: 24px; }
.feature-card p { color: var(--muted); margin-top: 10px; }
.lang-switch { display:flex; align-items:center; gap:6px; }
.lang-switch--header { flex-shrink: 0; }
.lang-switch button {
  min-width:42px;
  height:36px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background: transparent;
  color: rgba(245,247,250,.72);
  cursor:pointer;
}
.lang-switch button.is-active {
  color: var(--text-on-dark);
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.18);
}
@media (max-width: 1100px) { .feature-grid--4 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 700px) {
  .feature-grid--2, .feature-grid--4 { grid-template-columns: 1fr; }
  .feature-card { padding:18px; }
}
@media (max-width: 560px) {
  .brand { gap: 10px; letter-spacing: .1em; }
  .brand-mark { width: 34px; height: 34px; border-radius: 10px; }
  .lang-switch button { min-width: 38px; height: 34px; }
}


/* v17.7.1 visual clarity */
.site-header {
  background: rgba(12,16,22,.78);
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.site-nav--desktop a {
  color: rgba(245,247,250,.82);
}
.site-header .btn-secondary,
.site-header .btn-primary {
  min-height: 40px;
  padding: 0 16px;
}
.site-header .btn-secondary {
  border-color: rgba(255,255,255,.20);
  background: rgba(255,255,255,.08);
  color: var(--text-on-dark);
}
.site-header .btn-secondary:hover {
  border-color: rgba(255,255,255,.34);
  background: rgba(255,255,255,.14);
  color: var(--text-on-dark);
}
.lang-switch button {
  border-color: rgba(255,255,255,.18);
  background: rgba(255,255,255,.04);
  color: rgba(245,247,250,.84);
}
.lang-switch button:hover {
  border-color: rgba(255,255,255,.32);
  background: rgba(255,255,255,.12);
  color: var(--text-on-dark);
}
.lang-switch button.is-active {
  color: #0d1117;
  background: rgba(255,255,255,.92);
  border-color: rgba(255,255,255,.92);
  box-shadow: 0 10px 24px rgba(0,0,0,.12);
}