:root{--brand: #2563eb;--border: #e2e8f0;--text: #0f172a;--muted: #64748b}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:#f8fafc}.wrap{max-width:1100px;margin:0 auto;padding:1.25rem}.wrap.center{text-align:center;padding-top:6rem}.header{display:flex;align-items:center;gap:1rem;margin-bottom:1rem}.header h1{margin:0;font-size:1.3rem;flex:1}.ver{font-size:.8rem;color:#64748b;font-weight:400}.actions{display:flex;align-items:center;gap:.75rem}button{background:var(--brand);color:#fff;border:none;border-radius:6px;padding:.5rem .9rem;cursor:pointer;font-size:.9rem}button:disabled{opacity:.5;cursor:not-allowed}.builder-host{background:#fff;border:1px solid var(--border);border-radius:8px;padding:1rem;min-height:420px}.note{background:#fef9c3;border:1px solid #fde047;padding:.6rem .8rem;border-radius:6px}.success{color:#15803d}.error{color:#b91c1c}.shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.sidebar{background:#0f172a;color:#cbd5e1;padding:1rem .75rem;display:flex;flex-direction:column;gap:1.25rem}.sidebar .brand{font-weight:700;font-size:1.05rem;color:#fff;padding:.25rem .6rem .85rem}.app-switch{display:flex;flex-direction:column;gap:.2rem;padding-bottom:.85rem;border-bottom:1px solid #1e293b}.app-item{display:flex;align-items:center;gap:.5rem;padding:.5rem .6rem;border-radius:6px;font-size:.92rem;font-weight:600;color:#94a3b8;text-decoration:none}.app-item:before{content:"";width:7px;height:7px;border-radius:50%;background:#475569;flex:none}.app-item:hover{background:#1e293b;color:#fff}.app-item.current{background:var(--brand);color:#fff;cursor:default}.app-item.current:before{background:#fff}.app-item.current:hover{background:var(--brand)}.nav{display:flex;flex-direction:column;gap:.25rem}.nav-item{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.5rem .6rem;border-radius:6px;color:#cbd5e1;text-decoration:none;font-size:.9rem}.nav-item:hover{background:#1e293b;color:#fff}.nav-item.active{background:var(--brand);color:#fff}.nav-item.disabled{opacity:.5;cursor:default}.nav-item.disabled:hover{background:transparent;color:#cbd5e1}.nav-item em{font-style:normal;font-size:.6rem;text-transform:uppercase;letter-spacing:.04em;color:#94a3b8;border:1px solid #334155;border-radius:4px;padding:.05rem .3rem}.main{display:flex;flex-direction:column;min-width:0}.topbar{display:flex;align-items:center;justify-content:flex-end;gap:.75rem;padding:.6rem 1.25rem;background:#fff;border-bottom:1px solid var(--border)}.usermenu{display:flex;align-items:center;gap:.6rem}.usermenu .username{font-size:.85rem;color:var(--text)}.usermenu .avatar{width:32px;height:32px;border-radius:50%;background:var(--brand);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:600}.usermenu .signout{background:transparent;color:var(--muted);border:1px solid var(--border);padding:.35rem .7rem;font-size:.8rem;border-radius:6px;cursor:pointer}.usermenu .signout:hover{background:#f1f5f9}.content{min-width:0}