:root{--topbar-height:56px;--platform-sidebar-width:224px;--page-padding-x:20px;--page-padding-y:18px;--card-padding:14px;--card-gap:10px;--button-height:38px;--input-height:38px}html[data-density=comfortable]{--topbar-height:60px;--platform-sidebar-width:236px;--page-padding-x:24px;--page-padding-y:22px;--card-padding:18px;--card-gap:14px;--button-height:42px;--input-height:42px}html[data-density=accessibility]{--topbar-height:68px;--platform-sidebar-width:268px;--page-padding-x:28px;--page-padding-y:28px;--card-padding:24px;--card-gap:18px;--button-height:48px;--input-height:48px}.platform-shell{background:var(--ethico-bg);min-height:100vh;color:var(--ethico-text)}.platform-grid{min-height:100vh;display:grid}@media (min-width:1024px){.platform-grid{grid-template-columns:var(--platform-sidebar-width) minmax(0,1fr)}}.platform-sidebar{border-right:1px solid var(--ethico-border);background:var(--ethico-surface);display:none}@media (min-width:1024px){.platform-sidebar{flex-direction:column;height:100vh;padding:16px;display:flex;position:sticky;top:0}}.platform-topbar{z-index:50;height:var(--topbar-height);border-bottom:1px solid var(--ethico-border);background:var(--ethico-bg);position:sticky;top:0}.platform-content{padding:var(--page-padding-y) var(--page-padding-x)}.platform-page{gap:var(--card-gap);display:grid}.platform-page-header{border-bottom:1px solid var(--ethico-border);padding-bottom:var(--card-gap);justify-content:space-between;align-items:flex-start;gap:1rem;display:flex}.platform-kicker{color:var(--ethico-primary);letter-spacing:.16em;text-transform:uppercase;font-size:12px;font-weight:900}.platform-title{margin-top:.35rem;font-size:26px;font-weight:950;line-height:1.1}.platform-subtitle{max-width:56rem;color:var(--ethico-text-muted);margin-top:.45rem;font-size:13px;line-height:1.55}.platform-card,.platform-row{border:1px solid var(--ethico-border);background:var(--ethico-surface);box-shadow:var(--ethico-shadow-soft);padding:var(--card-padding);border-radius:16px}.platform-input-shell{min-height:var(--input-height);border:1px solid var(--ethico-border);background:var(--ethico-surface);color:var(--ethico-text-muted);border-radius:12px;align-items:center;gap:.6rem;padding:0 .85rem;font-size:12px;display:flex}.platform-badge{border:1px solid var(--ethico-border);background:var(--ethico-surface-muted);border-radius:999px;justify-content:center;align-items:center;min-height:1.9rem;padding:.25rem .7rem;font-size:11px;font-weight:900;display:inline-flex}.platform-section-title{align-items:center;gap:.55rem;font-size:13px;font-weight:900;display:flex}.platform-small-text{color:var(--ethico-text-muted);font-size:12px;line-height:1.5}.platform-shell .ethico-button-primary,.platform-shell .ethico-button-secondary{min-height:var(--button-height);border-radius:.75rem;padding:.5rem .9rem;font-size:12px}