.app-shell{min-height:100vh;display:grid;grid-template-columns:var(--sidebar) 1fr}.sidebar{position:sticky;top:0;height:100vh;background:var(--surface);border-right:1px solid var(--line);padding:22px 18px;display:flex;flex-direction:column;z-index:30}.brand-block{display:flex;align-items:center;gap:12px;padding:4px 8px 24px}.brand-mark{width:44px;height:44px;border-radius:14px;background:var(--primary);color:var(--surface);display:grid;place-items:center;font-family:var(--font-display);font-weight:800;letter-spacing:-.04em}.brand-name{font-family:var(--font-display);font-weight:800;font-size:15px}.brand-sub{font-size:12px;color:var(--muted);margin-top:2px}.nav-list{display:flex;flex-direction:column;gap:7px}.nav-item{border:0;background:transparent;display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:12px;text-align:left;cursor:pointer;color:var(--muted);font-weight:600}.nav-item:hover{background:var(--surface-2);color:var(--text)}.nav-item.active{background:var(--primary-2);color:var(--primary)}.nav-icon{width:24px;text-align:center;font-weight:800}.sidebar-footer{margin-top:auto;padding:16px 8px 0;border-top:1px solid var(--line)}.engine-badge{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:7px}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px color-mix(in srgb,var(--success) 16%,transparent)}.main-column{min-width:0}.topbar{height:var(--topbar);position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(16px);display:flex;align-items:center;gap:16px;padding:14px 28px;border-bottom:1px solid color-mix(in srgb,var(--line) 70%,transparent)}.topbar-copy{min-width:0;flex:1}.topbar h1{font-family:var(--font-display);font-size:22px;margin:0;letter-spacing:-.03em}.topbar p{margin:3px 0 0;color:var(--muted);font-size:13px}.topbar-actions{display:flex;align-items:center;gap:10px}.page-root{padding:28px;max-width:1480px;margin:0 auto}.mobile-menu{display:none}.grid{display:grid;gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.stack{display:flex;flex-direction:column;gap:14px}.row{display:flex;align-items:center;gap:12px}.row.between{justify-content:space-between}.section{margin-bottom:28px}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:14px}.section-head h2{font-family:var(--font-display);font-size:18px;margin:0}.section-head p{margin:4px 0 0;color:var(--muted);font-size:13px}


/* V1.6.0 — explicit theme menu */
.theme-control{position:relative;display:flex;align-items:center}
.theme-trigger{width:auto!important;min-width:42px;padding:0 12px!important;display:flex!important;grid-auto-flow:column;gap:8px;white-space:nowrap}
.theme-trigger-icon{font-size:17px;line-height:1}
.theme-label{font-size:11px;font-weight:800;color:var(--muted)}
.theme-menu{position:absolute;right:0;top:calc(100% + 12px);width:232px;padding:10px;border-radius:18px;background:var(--bg);box-shadow:var(--neu-raised-md);z-index:80}
.theme-menu[hidden]{display:none}
.theme-option{width:100%;display:grid;grid-template-columns:30px 1fr 22px;align-items:center;gap:9px;text-align:left;border:0;background:transparent;color:var(--text);padding:11px;border-radius:13px;cursor:pointer}
.theme-option:hover,.theme-option:focus-visible{background:var(--primary-2);outline:none}
.theme-option>span:first-child{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:var(--bg);box-shadow:var(--neu-inset-sm);font-size:16px}
.theme-option>span:nth-child(2){display:flex;flex-direction:column;gap:2px}
.theme-option strong{font-size:12px}.theme-option small{font-size:10px;color:var(--muted)}
.theme-option b{opacity:0;color:var(--primary);font-size:14px}.theme-option.active b{opacity:1}.theme-option.active{color:var(--primary);background:var(--primary-2)}
@media(max-width:780px){.theme-label{display:none}.theme-trigger{width:40px!important;padding:0!important}.theme-menu{position:fixed;right:14px;top:68px;width:min(232px,calc(100vw - 28px))}}