:root{--pistachio-green:#4ADE80;--warm-wood:#E8D5B7;--color-brand:#4ADE80;--color-brand-hover:#22C55E;--color-brand-light:rgba(74,222,128,0.10);--color-text-primary:#1A1D1F;--color-text-secondary:#57606A;--color-text-tertiary:#8B949E;--color-bg-primary:#FFFFFF;--color-bg-secondary:#F7F8FA;--color-bg-tertiary:#F0F1F3;--color-border-primary:#E5E7EB;--color-border-secondary:#F0F1F3;--shadow-brand:0 4px 14px rgba(74,222,128,0.25);--shadow-brand-lg:0 8px 24px rgba(74,222,128,0.35);--shadow-mega:0 8px 32px rgba(0,0,0,0.08),0 2px 8px rgba(0,0,0,0.04);--shadow-md:0 4px 8px rgba(0,0,0,0.04),0 2px 4px rgba(0,0,0,0.06);--shadow-xl:0 16px 32px rgba(0,0,0,0.08),0 8px 16px rgba(0,0,0,0.04);--color-bg-elevated:#ffffff;--ease-default:cubic-bezier(0.4,0,0.2,1);--font-marketing:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}.hk-cs-modal-content,.hk-mega-menu,.hk-mobile-drawer,.hk-nav{font-family:var(--font-marketing)}#navbar.hk-nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:center;height:64px;border-bottom:1px solid var(--color-border-primary);transition:transform .38s var(--ease-default),background .3s ease,box-shadow .3s ease,border-color .3s ease}#navbar.hk-nav.glass-nav{background:rgba(255,255,255,.8);backdrop-filter:blur(12px) saturate(180%);-webkit-backdrop-filter:blur(12px) saturate(180%);border-bottom:1px solid rgba(0,0,0,.05)}#navbar.hk-nav.nav-hidden{transform:translateY(-100%)}.hk-nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:1200px;height:100%;padding:0 24px}.hk-logo{display:inline-flex;align-items:center;gap:8px;text-decoration:none;flex-shrink:0}.hk-logo img{display:block;width:34px;height:34px;border-radius:8px;object-fit:cover}.hk-logo-text{font-size:17px;font-weight:600;color:var(--color-text-primary);letter-spacing:-.01em}.hk-nav-links{display:flex;align-items:center;gap:4px;margin:0 auto}.hk-nav-item,.hk-tab{position:relative}.hk-tab{display:inline-flex;align-items:center;gap:4px;padding:8px 14px;font-size:14px;font-weight:500;line-height:1.4;color:var(--color-text-secondary);background:transparent;border:none;cursor:pointer;text-decoration:none;border-radius:8px;transition:color .2s var(--ease-default),background .2s var(--ease-default)}.hk-tab:hover{color:var(--color-brand-hover)}.hk-tab-arrow{width:14px;height:14px;transition:transform .2s var(--ease-default)}.hk-nav-item.open .hk-tab-arrow,.hk-nav-item:hover .hk-tab-arrow{transform:rotate(180deg)}.hk-tab:after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--color-brand);border-radius:2px;transform:scaleX(0);transform-origin:center;transition:transform .2s var(--ease-default)}.hk-nav[data-active=about] .hk-tab[data-nav=about],.hk-nav[data-active=blog] .hk-tab[data-nav=blog],.hk-nav[data-active=cases] .hk-tab[data-nav=cases],.hk-nav[data-active=home] .hk-tab[data-nav=home],.hk-nav[data-active=pricing] .hk-tab[data-nav=pricing],.hk-nav[data-active=product] .hk-tab[data-nav=product],.hk-tab.hk-tab-active{color:var(--color-brand-hover)}.hk-nav[data-active=about] .hk-tab[data-nav=about]:after,.hk-nav[data-active=blog] .hk-tab[data-nav=blog]:after,.hk-nav[data-active=cases] .hk-tab[data-nav=cases]:after,.hk-nav[data-active=home] .hk-tab[data-nav=home]:after,.hk-nav[data-active=pricing] .hk-tab[data-nav=pricing]:after,.hk-nav[data-active=product] 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6px;font-size:11px;font-weight:600;color:var(--color-text-tertiary);text-transform:uppercase;letter-spacing:.05em}.hk-mega-link{display:block;padding:10px 12px;border-radius:8px;text-decoration:none;transition:background .15s var(--ease-default)}.hk-mega-link:hover{background:rgba(74,222,128,.06)}.hk-mega-link-title{margin-bottom:2px;font-size:14px;font-weight:500;color:var(--color-text-primary);transition:color .15s var(--ease-default)}.hk-mega-link:hover .hk-mega-link-title{color:var(--color-brand-hover)}.hk-mega-link-desc{font-size:12px;line-height:1.4;color:var(--color-text-tertiary)}.hk-mega-tag{display:inline-block;margin-left:6px;padding:2px 6px;font-size:10px;font-weight:600;color:var(--color-brand-hover);background:var(--color-brand-light);border-radius:4px;vertical-align:middle}.hk-mega-product{display:flex;gap:4px}.hk-mega-product-left{flex-shrink:0;width:190px;display:flex;flex-direction:column;gap:2px;padding-right:8px;border-right:1px solid 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