.app-frame { min-height: 100vh; background: radial-gradient(circle at 72% -8%, rgb(28 65 78 / 18%), transparent 38%), var(--color-canvas); }
.topbar { display: grid; grid-template-columns: 220px minmax(220px, 1fr) auto; gap: var(--space-6); align-items: center; height: var(--header-height); padding: 0 var(--space-7); background: rgb(10 15 20 / 88%); border-bottom: 1px solid var(--color-line); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(16px); }
.brand { display: inline-flex; align-items: center; gap: var(--space-3); color: var(--color-text); text-decoration: none; }
.brand-mark { display: grid; width: 34px; height: 34px; place-items: center; color: var(--color-action); background: var(--color-action-soft); border: 1px solid rgb(88 225 255 / 35%); border-radius: 10px; }
.brand-mark .icon { width: 20px; height: 20px; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 15px; letter-spacing: .1em; }
.brand small { color: var(--color-text-faint); font-size: 9px; font-weight: 750; letter-spacing: .14em; }
.command-search { display: flex; align-items: center; gap: var(--space-3); min-width: 0; max-width: 620px; width: 100%; margin: auto; padding: 0 10px 0 14px; color: var(--color-text-muted); background: var(--color-surface-1); border: 1px solid var(--color-line); border-radius: var(--radius-sm); transition: border-color 160ms ease, box-shadow 160ms ease; }
.command-search:focus-within { border-color: var(--color-action); box-shadow: var(--focus-ring); }
.command-search input { min-width: 0; flex: 1; height: 44px; color: var(--color-text); background: transparent; border: 0; outline: 0; }
.command-search input::placeholder { color: var(--color-text-faint); }
.icon--search { color: var(--color-action); }
.shortcut { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; padding: 0 8px; color: var(--color-text-muted); background: var(--color-surface-2); border: 1px solid var(--color-line); border-radius: 6px; font-size: 11px; }
.shortcut .icon { width: 14px; height: 14px; }
.header-actions { display: flex; align-items: center; justify-content: flex-end; gap: var(--space-3); }
.icon-button { display: inline-grid; width: 44px; height: 44px; place-items: center; padding: 0; color: var(--color-text-muted); background: transparent; border: 1px solid transparent; border-radius: var(--radius-sm); }
.icon-button:hover { color: var(--color-text); background: var(--color-surface-2); border-color: var(--color-line); }
.icon-button--small { width: 44px; height: 44px; }
.destination { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 10px; color: var(--color-text); text-align: left; background: transparent; border: 1px solid transparent; border-radius: var(--radius-sm); }
.destination:hover { background: var(--color-surface-2); border-color: var(--color-line); }
.destination strong, .destination small { display: block; }
.destination strong { font-size: 12px; }
.destination small { color: var(--color-text-muted); font-size: 11px; }
.icon--chevron { width: 15px; height: 15px; color: var(--color-text-faint); }
.avatar { width: 44px; height: 44px; padding: 0; color: var(--color-action-ink); background: var(--color-action); border: 0; border-radius: 50%; font-weight: 800; }
.shell-body { display: grid; grid-template-columns: var(--rail-width) minmax(0, 1fr) var(--inspector-width); min-height: calc(100vh - var(--header-height)); }