:root{--paper:var(--rx-paper,#F4F7F8);--ink:var(--rx-ink,#071015);--cyan:var(--rx-cyan,#18BFD0);--muted:#4F6068;--rule:#D9E1E4;--soft:#EDF2F3;--ease:cubic-bezier(.2,0,0,1);--gutter:clamp(24px,4.4vw,64px)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:80px}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Rivex Body Latin","Rivex Body HK",var(--rx-font-body-hk);font-weight:400;-webkit-font-smoothing:antialiased}button,a,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{color:inherit;cursor:pointer;border:0;background:none}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}figure,h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:500}button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--cyan);outline-offset:4px}button:active,a:active{opacity:.72}button:disabled{cursor:default;opacity:.5}::selection{background:var(--ink);color:white}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.skip{position:fixed;z-index:100;top:8px;left:24px;transform:translateY(-160%);padding:16px;background:#fff}.skip:focus{transform:none}.anchor-alias{display:block;height:0;scroll-margin-top:0}
.header{position:sticky;top:0;z-index:50;height:80px;display:flex;align-items:center;gap:32px;padding:0 var(--gutter);background:var(--paper);border-bottom:1px solid var(--rule)}.brand{display:flex;align-items:center;min-height:48px;flex-shrink:0}.brand img{width:208px}.desktop-nav{display:flex;align-items:center;gap:32px;margin-left:auto;font-size:12px}.desktop-nav a{position:relative;display:flex;align-items:center;min-height:48px;white-space:nowrap}.desktop-nav a::after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--cyan);transform:scaleX(0);transition:transform 180ms var(--ease)}.desktop-nav a[aria-current],.desktop-nav a:hover{font-weight:500}.desktop-nav a[aria-current]::after{transform:scaleX(1)}.header-contact{border-left:1px solid var(--rule);padding-left:32px;min-height:48px;display:flex;align-items:center;gap:24px;font-size:12px}.header-contact:hover{text-decoration:underline;text-underline-offset:4px}.menu-trigger{width:48px;height:48px;display:none;flex-direction:column;gap:8px;align-items:center;justify-content:center}.menu-trigger span{width:24px;height:1px;background:var(--ink)}
.section-inner{max-width:1472px;margin:0 auto;padding:0 var(--gutter)}.chapter{scroll-margin-top:0}.chapter-meta,.chapter-foot,.product-topline{display:flex;align-items:center;justify-content:space-between;gap:24px}.chapter-meta{padding-top:32px;font-size:12px;color:var(--muted)}.chapter-foot{border-top:1px solid var(--rule);min-height:80px;font-size:12px;color:var(--muted)}.chapter-foot a{color:var(--ink);display:flex;align-items:center;gap:24px;min-height:48px}.chapter-foot a:hover span{transform:translateY(4px)}.chapter-foot a span{transition:transform 180ms}.eyebrow{font-size:12px;line-height:24px;display:flex;gap:16px;align-items:center;margin-bottom:32px}.datum{display:inline-block;width:24px;height:2px;background:var(--cyan);flex-shrink:0}.lede{font-size:16px;line-height:28px;color:var(--muted);max-width:432px}.text-action,.text-link{display:inline-flex;align-items:center;gap:24px;min-height:48px;font-size:14px}.text-action{border-bottom:1px solid var(--rule)}.text-action:hover,.text-link:hover{text-decoration:underline;text-underline-offset:4px}.text-action span,.text-link span{transition:transform 180ms var(--ease)}.text-action:hover span,.text-link:hover span{transform:translate(2px,-2px)}.primary{display:inline-flex;align-items:center;gap:32px;justify-content:space-between;min-height:48px;border-radius:8px;padding:12px 24px;background:var(--ink);color:#fff;font-size:14px;line-height:24px;transition:background 180ms,transform 180ms}.primary:hover{background:#183A35;transform:translateY(-2px)}.actions{display:flex;align-items:center;gap:16px 32px;flex-wrap:wrap;margin:32px 0}.actions .text-link{font-size:12px}
.expand-symbol{position:relative;width:32px;height:32px;border:1px solid var(--rule);border-radius:50%;flex-shrink:0}.expand-symbol:before,.expand-symbol:after{content:"";position:absolute;left:9px;top:14px;width:12px;height:1px;background:currentColor;transition:transform 180ms}.expand-symbol:after{transform:rotate(90deg)}details[open]>summary .expand-symbol:after{transform:rotate(0)}summary{cursor:pointer;list-style:none}summary::-webkit-details-marker{display:none}
.contact{padding:96px 0;background:var(--paper);border-top:1px solid var(--rule)}.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:end}.contact h2{font-size:32px;line-height:44px}.contact p:not(.eyebrow){font-size:14px;line-height:24px;color:var(--muted)}.email{display:flex;justify-content:space-between;gap:24px;font-size:24px;line-height:32px;min-height:64px;align-items:center;border-bottom:1px solid var(--rule);margin-top:16px}.email:hover{border-color:var(--ink)}footer{padding:24px var(--gutter);border-top:1px solid var(--rule);display:flex;align-items:center;gap:32px;font-size:12px;color:var(--muted)}footer>span:first-child{margin-right:auto}footer button,footer a{min-height:44px;display:flex;align-items:center}.motion-toggle{text-decoration:underline;text-underline-offset:4px}
dialog{border:0;color:var(--ink);background:var(--paper);overscroll-behavior:contain}dialog::backdrop{background:rgba(7,16,21,.48)}body:has(dialog[open]){overflow:hidden}#navigation{margin:0 0 0 auto;width:min(560px,100%);max-width:100%;height:100dvh;max-height:100dvh;padding:32px;display:none}#navigation[open]{display:flex;flex-direction:column;animation:panel-in 240ms var(--ease)}.nav-head{display:flex;align-items:center;justify-content:space-between;gap:24px}.nav-head img{width:208px}.close-dialog{width:48px;height:48px;font-size:32px}.nav-head~nav{margin-top:48px}.nav-head~nav a{display:flex;justify-content:space-between;align-items:center;min-height:80px;border-bottom:1px solid var(--rule);font-size:24px}.nav-head~nav a span{font-size:12px;color:var(--muted)}.nav-contact{margin-top:auto;padding-top:48px;min-height:48px;font-size:14px}
[data-reveal]{transition:opacity 360ms var(--ease),transform 360ms var(--ease)}[data-reveal].waiting{opacity:0;transform:translateY(16px)}@keyframes panel-in{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@media(max-width:1000px){.desktop-nav{gap:24px}.header{gap:24px}.header-contact{display:none}.desktop-nav{margin-left:auto}}
@media(max-width:720px){html{scroll-padding-top:72px}.chapter,.anchor-alias{scroll-margin-top:0}.header{height:72px}.desktop-nav{display:none}.menu-trigger{display:flex;margin-left:auto}.brand img{width:200px}.chapter-meta{padding-top:24px}.chapter-meta span:last-child{display:none}.chapter-foot{align-items:start;flex-direction:column;gap:0;padding:24px 0;min-height:0}.chapter-foot>a{min-height:44px}.lede{font-size:16px;line-height:28px}.contact{padding:64px 0}.contact-layout{grid-template-columns:1fr;gap:32px}.contact h2{font-size:28px;line-height:40px}.email{font-size:20px}.eyebrow{margin-bottom:24px}footer{gap:8px 24px;flex-wrap:wrap}footer>span:first-child{margin-left:auto;margin-right:0}footer .motion-toggle{padding-left:0}footer a{margin-left:auto}#navigation{padding:24px}.nav-head~nav{margin-top:32px}.nav-head~nav a{min-height:72px;font-size:22px}.desktop-break{display:none}}
@media(max-width:350px){:root{--gutter:16px}.header{gap:8px}.nav-head img{width:200px}.nav-head{gap:0}.actions{gap:8px}.primary{padding:12px 16px;gap:16px}.chapter-foot{font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}[data-reveal].waiting{opacity:1;transform:none}}