html[data-nova-design=plain] .plain-shell{background:var(--cyber-bg);max-width:900px;min-height:100vh;color:var(--cyber-text,#e8e8e8);flex-direction:column;gap:20px;margin:0 auto;padding:24px 20px 64px;font-family:system-ui,-apple-system,Segoe UI,sans-serif;display:flex}html[data-nova-design=plain] .plain-header{border-bottom:1px solid var(--cyber-border-dim);justify-content:space-between;align-items:baseline;gap:16px;padding-bottom:12px;display:flex}html[data-nova-design=plain] .plain-title{margin:0;font-size:22px;font-weight:600}html[data-nova-design=plain] .plain-config-link{color:var(--cyber-cyan);border:1px solid var(--cyber-border-dim);padding:6px 12px;font-size:14px;text-decoration:none}html[data-nova-design=plain] .plain-nav ul{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}html[data-nova-design=plain] .plain-nav-item{font:inherit;background:var(--cyber-panel);color:inherit;border:1px solid var(--cyber-border-dim);cursor:pointer;padding:8px 14px;font-size:14px}html[data-nova-design=plain] .plain-nav-item[aria-current=true]{background:var(--cyber-line);color:var(--cyber-title-on-line,#000);border-color:var(--cyber-line)}html[data-nova-design=plain] .plain-body{display:block}html[data-nova-design=plain] .plain-error,html[data-nova-design=plain] .plain-notice,html[data-nova-design=plain] .plain-toast{border:1px solid var(--cyber-border-dim);background:var(--cyber-panel);margin:0;padding:10px 14px;font-size:14px}html[data-nova-design=plain] .plain-error{color:#ffb4b4;border-color:#e05353}html[data-nova-design=plain] .plain-toast{z-index:50;position:fixed;bottom:20px;right:20px}