:root{--site-bg:#f8fafc;--site-panel:#fff;--site-text:#172033;--site-muted:#64748b;--site-accent:#2563eb;--site-line:#e2e8f0;--site-radius:18px;--content-width:1180px;--section-space:clamp(58px,8vw,110px)}
.classic-style-clean .classic-header{box-shadow:0 1px 0 rgba(15,23,42,.03)}
.classic-style-clean .content-section{background:#fff}
.classic-style-clean .content-section:nth-child(even){background:#f8fafc}