:root{--color-bg-base: #0f1419;--color-bg-elevated: #183042;--color-text: #ecf3f8;--color-text-muted: #94a3b8;--color-text-secondary: #bdd0dd;--color-primary: #76d2ff;--color-success: #4ade80;--color-warning: #fbbf24;--color-error: #ef4444;--color-border: rgba(118, 210, 255, .16);--color-border-strong: rgba(118, 210, 255, .3);--color-card-bg: rgba(118, 210, 255, .05);--color-card-bg-elevated: rgba(15, 24, 34, .88);--color-row-hover: rgba(118, 210, 255, .08);--color-divider: rgba(118, 210, 255, .12);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 18px;--sidebar-width: 220px;--topbar-height: 56px;--content-max-width: 1280px;--font-family: Inter, system-ui, sans-serif;--font-size-xs: 11px;--font-size-sm: 12px;--font-size-base: 14px;color-scheme:dark}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100vh}body{font-family:var(--font-family);background:radial-gradient(circle at top,var(--color-bg-elevated),var(--color-bg-base) 60%);color:var(--color-text)}ul,ol{margin:0;padding-left:18px}li+li{margin-top:8px}.shell{max-width:1080px;margin:0 auto;padding:48px 20px 64px}.hero h1{margin:0;font-size:clamp(2rem,4vw,3.5rem)}.eyebrow{text-transform:uppercase;letter-spacing:.14em;color:var(--color-primary);font-size:.82rem;margin-bottom:12px}.summary{max-width:640px;color:var(--color-text-secondary)}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;margin-top:32px}.card{background:var(--color-card-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:20px;box-shadow:0 20px 50px #0003}.stats{display:grid;gap:12px}.stats div{display:flex;justify-content:space-between;gap:16px;padding-bottom:8px;border-bottom:1px solid rgba(255,255,255,.08)}dt{color:#8ea6b8}dd{margin:0;font-weight:600}.app-shell{display:grid;grid-template-columns:var(--sidebar-width) 1fr;grid-template-rows:var(--topbar-height) 1fr;grid-template-areas:"sidebar topbar" "sidebar content";min-height:100vh}.app-sidebar{grid-area:sidebar;background:#0a121ab3;border-right:1px solid var(--color-border);padding:var(--space-4) var(--space-2);display:flex;flex-direction:column;gap:var(--space-2)}.app-sidebar .brand{font-weight:700;letter-spacing:.06em;padding:var(--space-3) var(--space-3) var(--space-5);color:var(--color-primary);text-transform:uppercase;font-size:var(--font-size-sm)}.nav-item{display:flex;align-items:center;gap:var(--space-2);padding:8px 12px;border-radius:var(--radius-sm);background:transparent;border:none;color:var(--color-text);cursor:pointer;font-size:var(--font-size-base);text-align:left;width:100%}.nav-item:hover:not(:disabled){background:var(--color-row-hover)}.nav-item.active{background:var(--color-primary);color:#0a1218;font-weight:600}.nav-item:disabled{opacity:.4;cursor:not-allowed}.app-topbar{grid-area:topbar;display:flex;justify-content:space-between;align-items:center;padding:0 var(--space-6);border-bottom:1px solid var(--color-border);background:#0a121a80;gap:var(--space-4)}.app-topbar .wordmark{font-weight:700;letter-spacing:.04em;color:var(--color-text)}.app-content{grid-area:content;padding:var(--space-8);max-width:var(--content-max-width);width:100%;overflow-y:auto}.page-card{background:var(--color-card-bg);border:1px solid var(--color-border);padding:var(--space-4);border-radius:var(--radius-md);margin-bottom:var(--space-4)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;z-index:50;padding:var(--space-4)}.modal-card{background:var(--color-bg-elevated);border:1px solid var(--color-border-strong);border-radius:var(--radius-md);padding:var(--space-5);max-width:520px;width:100%;max-height:90vh;overflow-y:auto}