.site-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header .inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-20);
}

.brand {
  font-family: "Oswald", sans-serif;
  font-size: 24px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.brand .accent {
  color: var(--accent);
}

.site-nav {
  display: flex;
  gap: 16px;
  color: var(--text-muted);
}

.site-nav a.active,
.site-nav a:hover {
  color: var(--text-strong);
}

.hero {
  min-height: 76vh;
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  align-items: center;
  gap: 36px;
  padding: 64px 0;
}

.hero .title {
  font-size: clamp(38px, 8vw, 78px);
  line-height: 0.95;
}

.hero .title .accent {
  color: var(--accent);
}

.hero .copy {
  margin-top: 18px;
  font-size: 18px;
  max-width: 640px;
}

.hero .actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.hero-visual {
  border-radius: var(--radius-xl);
  border: 1px solid var(--line-mid);
  background: linear-gradient(180deg, rgba(18, 22, 24, 0.98), rgba(8, 11, 12, 0.98));
  box-shadow: var(--shadow-md), var(--shadow-accent);
  min-height: 420px;
  padding: 22px;
}

.app-shell {
  width: min(1460px, calc(100% - 24px));
  margin: 12px auto;
  min-height: calc(100vh - 24px);
  border-radius: var(--radius-shell);
  border: 1px solid var(--line-mid);
  background: rgba(8, 10, 10, 0.92);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.app-grid {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: calc(100vh - 24px);
}

.sidebar {
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, #0c0d0d 0%, #101212 100%);
  padding: 22px 16px;
}

.sidebar .nav-group {
  margin-top: 18px;
  display: grid;
  gap: 8px;
}

.sidebar-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  border-radius: var(--radius-md);
  padding: 0 12px;
  color: var(--text-muted);
  border: 1px solid transparent;
}

.sidebar-link.active {
  color: var(--text-strong);
  border-color: var(--line-strong);
  background: linear-gradient(90deg, rgba(124, 255, 58, 0.16), rgba(124, 255, 58, 0));
}

.sidebar-link:hover {
  color: var(--text-strong);
  border-color: rgba(255, 255, 255, 0.14);
}

.main {
  padding: 20px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.topbar h1 {
  font-size: clamp(22px, 4vw, 34px);
}

.topbar-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}