:root{--pink:#FF1765;--pink2:#FF3D7D;--rose:#E90052;--soft:#FFF0F5;--soft2:#FFF7FA;--text:#222;--body:#444;--muted:#777;--line:rgba(255,23,101,.12);--shadow:0 14px 40px rgba(30,20,25,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--body);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid rgba(0,0,0,.06);backdrop-filter:blur(12px)}.navwrap{max-width:1280px;height:72px;margin:auto;padding:0 24px;display:flex;align-items:center;gap:22px}.brand{display:flex;align-items:center;min-width:max-content;color:var(--pink);font-size:20px}.brand img{max-width:132px;max-height:42px;object-fit:contain}.desktop-nav{display:flex;align-items:center;gap:6px;flex:1}.desktop-nav a,.textbtn{padding:9px 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