:root{--bg:#F7F4FF;--surface:#fff;--soft:#EEF2FF;--text:#2F2A4A;--title:#1B1340;--muted:#5B5678;--light:#8B86A3;--purple:#7C3AED;--lav:#A78BFA;--teal:#14B8A6;--coral:#F97316;--pink:#E11D48;--amber:#F59E0B;--indigo:#312E81;--line:rgba(124,58,237,.14);--shadow:0 16px 40px rgba(49,46,129,.10)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75;overflow-x:hidden}body.modal-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}img{max-width:100%;display:block}.content-image{width:100%;height:auto;object-fit:contain;object-position:center}.site-header{position:fixed;inset:0 0 auto 0;z-index:1000;pointer-events:none}.desktop-nav-shell{display:flex;justify-content:center;padding:14px 16px}.desktop-nav{pointer-events:auto;display:grid;grid-template-columns:auto repeat(3,auto) minmax(74px,112px) repeat(3,auto) auto 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