:root{--pink:#FF1765;--pink2:#FF3D7D;--rose:#E90052;--soft:#FFF0F5;--soft2:#FFF7FA;--gray:#F7F7F8;--text:#444;--title:#222;--muted:#777;--border:rgba(255,23,101,.12);--shadow:0 14px 40px rgba(30,20,25,.08);--max:1280px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--text);background:#fff;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}body.locked{overflow:hidden}a{text-decoration:none;color:inherit}img{display:block;max-width:100%;height:auto}button,input{font:inherit}button,a{touch-action:manipulation}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(255,23,101,.3);outline-offset:3px}.site-header{position:sticky;top:0;z-index:80;height:72px;background:rgba(255,255,255,.97);border-bottom:1px solid rgba(0,0,0,.08);backdrop-filter:blur(12px)}.nav-wrap{width:min(calc(100% - 40px),var(--max));height:100%;margin:auto;display:flex;align-items:center;gap:18px}.brand{display:flex;align-items:center;min-width:max-content}.brand img{max-width:155px;max-height:42px;object-fit:contain}.brand strong{font-size:24px;color:var(--pink)}.main-nav{display:flex;align-items:center;gap:4px;flex:1}.main-nav a{padding:10px 13px;border-radius:999px;font-size:15px;font-weight:700}.main-nav a:hover,.main-nav a.active{color:var(--pink);background:var(--soft)}.nav-actions{display:flex;gap:8px;align-items:center}.nav-actions button,.nav-actions a,.menu-btn{min-height:44px;border-radius:999px;padding:0 14px;border:1px solid rgba(0,0,0,.08);background:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:800;cursor:pointer}.nav-actions .app-btn{color:#fff;border:0;background:linear-gradient(135deg,#FF4A86 0%,#FF1765 55%,#E90052 100%)}.mobile-only,.mobile-bottom{display:none}.container{width:min(calc(100% - 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