/* GCAIRD v2.0. Editorial prototype, no framework, no external dependencies. */
:root {
  --ink:#14202a; --body:#2e3e4a; --muted:#4b5e6b;
  --blue:#034770; --sea:#79b6d5; --deep:#0f151f;
  --paper:#ffffff; --folio:#f4f6f6; --line:#cbd5d9;
  --serif:'Iowan Old Style','Baskerville','EB Garamond','Palatino Linotype',Georgia,serif;
  --sans:'Helvetica Neue',Helvetica,Arial,sans-serif;
  --max:1280px; --gutter:clamp(22px,4.7vw,78px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
button,a{ -webkit-tap-highlight-color:transparent }
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:3px solid #1e7ab0;outline-offset:5px}
button{font:inherit}
img{max-width:100%}
.container{width:min(calc(100% - var(--gutter)*2),var(--max));margin:0 auto}
.skip{position:absolute;top:-100px;left:16px;z-index:99;background:#fff;padding:12px 16px;border:2px solid var(--blue)}
.skip:focus{top:14px}
/* Institutional masthead */
.masthead{border-top:4px solid var(--blue);background:#fff;position:relative;z-index:20}
.masthead-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;min-height:105px;border-bottom:1px solid var(--line)}
.masthead-brand{display:flex;align-items:center;min-width:0;flex:0 1 320px}
.masthead-brand img{display:block;width:320px;height:auto}
.nav{display:flex;align-items:center;gap:clamp(15px,1.9vw,32px);font-size:13px;font-weight:600}
.nav a{padding:10px 0;line-height:1.4;position:relative;white-space:nowrap}
.nav a:after{position:absolute;content:"";height:1px;background:var(--blue);left:0;bottom:3px;width:0;transition:width .18s ease}
.nav a:hover:after,.nav a[aria-current='page']:after{width:100%}
.menu-toggle{display:none;min-width:45px;min-height:45px;align-items:center;justify-content:center;background:#fff;border:1px solid var(--line);cursor:pointer}
.menu-toggle svg{width:22px;height:22px}
/* Editorial design tokens */
.label{font-size:11px;line-height:1.6;font-weight:700;letter-spacing:.125em;text-transform:uppercase;color:var(--blue)}
.fine{font-size:12px;line-height:1.65;color:var(--muted)}
.linkline{display:inline-flex;gap:23px;align-items:center;border-bottom:1px solid currentColor;padding-bottom:7px;font-size:14px;font-weight:600;color:var(--blue);min-height:32px}
.linkline span{font-size:21px;font-weight:300;line-height:0;transition:transform .2s ease}
.linkline:hover span{transform:translateX(4px)}
.hairline{border-top:1px solid var(--line)}
.text{font-size:17px;line-height:1.75;color:var(--body);max-width:730px}
.text p{margin:0 0 19px}
.text p:last-child{margin-bottom:0}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3{font-weight:400}
h1,h2,.big-quote,.row-title{font-family:var(--serif)}
h2{font-size:clamp(37px,4.4vw,64px);line-height:1.12;letter-spacing:-.032em}
h3{font-size:25px;line-height:1.2}
/* Homepage: no cards, no invented metrics, no oversized illustration */
.home-hero{padding:76px 0 82px}
.hero-supra{display:grid;grid-template-columns:1fr 1fr;gap:36px;padding-bottom:31px;align-items:center}
.hero-supra .label:last-child{text-align:right;color:var(--muted)}
.hero-title{font-size:clamp(58px,7vw,96px);line-height:.96;letter-spacing:-.035em;max-width:1100px;margin:28px 0 65px;font-weight:400}
.hero-foot{display:grid;grid-template-columns:1.2fr .42fr;gap:clamp(48px,8vw,132px);align-items:end;padding-top:25px;border-top:1px solid var(--line)}
.hero-lead{max-width:790px;font-size:clamp(21px,2.1vw,27px);line-height:1.5;font-family:var(--serif);letter-spacing:-.01em;margin:0 0 23px}
.hero-rail{border-left:1px solid var(--line);padding-left:26px}
.hero-rail p{font-size:14px;line-height:1.65;color:var(--body);margin:11px 0 0}
.hero-links{display:flex;gap:34px;flex-wrap:wrap;margin-top:31px}
.interlude{background:var(--folio);padding:108px 0 118px}
.interlude-grid{display:grid;grid-template-columns:270px 1fr;gap:5vw}
.interlude-heading{margin:0 0 32px;max-width:830px}
.interlude .text{font-size:18px;max-width:670px}
/* Two-tier list instead of identical feature cards */
.work{padding:105px 0 112px}
.work-head{display:grid;grid-template-columns:270px 1fr;gap:5vw;margin-bottom:48px}
.work-head h2{max-width:790px;margin:0}
.work-list{border-top:1px solid var(--ink)}
.work-row{display:grid;grid-template-columns:minmax(260px, .95fr) minmax(280px, 1fr);gap:30px;align-items:baseline;padding:31px 0 34px;border-bottom:1px solid var(--line)}
.work-row .row-id{font-size:13px;color:var(--blue);font-weight:600}
.work-row h3{font-family:var(--serif);font-size:clamp(26px,2.9vw,40px);line-height:1.08;letter-spacing:-.03em;margin:0}
.work-row p{font-size:15px;line-height:1.7;color:var(--body);margin:0;max-width:440px}
.work-row .row-indicator{justify-self:end;color:var(--blue);font-size:23px}
/* Dark insert as editorial chapter rather than sales CTA */
.agenda{background:#0a2d47;color:#fff;padding:105px 0 113px}
.agenda .label{color:#a9cfe4}
.agenda-main{display:grid;grid-template-columns:270px 1fr;gap:5vw}
.agenda-title{font-family:var(--serif);font-weight:400;font-size:clamp(45px,5.3vw,75px);letter-spacing:-.035em;line-height:1.04;margin:8px 0 36px;max-width:810px}
.agenda-grid{display:grid;grid-template-columns:1fr 1fr;column-gap:70px;row-gap:25px;margin-top:52px}
.agenda-item{padding:15px 0 20px;border-top:1px solid #ffffff68}
.agenda-item span{display:block;font-size:11px;letter-spacing:.11em;color:#b6d7e6;text-transform:uppercase;margin-bottom:13px}
.agenda-item h3{font-family:var(--serif);font-size:26px;margin:0 0 8px;line-height:1.1}
.agenda-item p{color:#d3e1e9;font-size:14px;line-height:1.7;max-width:410px;margin:0}
/* Closing pair */
.closing{padding:113px 0 130px}
.closing-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:9vw}
.closing h2{font-size:clamp(44px,5vw,70px);max-width:680px;margin:22px 0 0}
.closing .text{padding-top:54px;font-size:18px}
.closing .linkline{margin-top:24px}
.site-footer{background:var(--deep);color:#fff;padding:66px 0 33px}
.footer-main{display:flex;gap:70px;align-items:flex-start;justify-content:space-between}
.footer-identity img{display:block;width:min(480px,100%);height:auto}
.footer-identity p{margin:19px 0 0;letter-spacing:.06em;text-transform:uppercase;font-size:10px;color:#c0cdd8}
.footer-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px 35px;min-width:220px;font-size:13px;color:#d9e5ee}
.footer-nav a:hover{text-decoration:underline}
.footer-base{border-top:1px solid #48515a;margin-top:76px;padding-top:23px;display:flex;justify-content:space-between;gap:24px;color:#afc0cd;font-size:11px;line-height:1.5}
/* Subpages: each with distinct editorial treatment */
.page-hero{padding:73px 0 76px}
.page-hero .page-topline{display:flex;justify-content:space-between;gap:20px;padding-bottom:29px;border-bottom:1px solid var(--line)}
.page-hero h1{max-width:1150px;font-size:clamp(58px,6.5vw,96px);line-height:.98;letter-spacing:-.035em;margin:50px 0 40px}
.page-hero .page-intro{display:grid;grid-template-columns:1fr 1fr;gap:7vw;align-items:end}
.page-hero .page-intro p{font-family:var(--serif);font-size:clamp(21px,2.2vw,30px);line-height:1.43;margin:0}
.page-hero .page-intro aside{font-size:14px;color:var(--body);line-height:1.7;border-left:1px solid var(--line);padding-left:30px;max-width:500px}
.page-section{padding:90px 0 98px}
.page-section.alt{background:var(--folio)}
.page-content-grid{display:grid;grid-template-columns:270px minmax(0,1fr);gap:5vw}
.page-section h2{margin:0 0 27px;max-width:800px}
.page-section .subhead{font-family:var(--serif);font-size:clamp(28px,3vw,40px);line-height:1.2;max-width:850px;margin-bottom:25px}
.prose{max-width:800px;font-size:17px;line-height:1.75;color:var(--body)}
.prose p{margin:0 0 22px}
.prose p:last-child{margin:0}
.prose ul{margin:14px 0 0;padding-left:21px}
.prose li{margin:9px 0}
.factlist{margin-top:37px;border-top:1px solid var(--ink)}
.factrow{display:grid;grid-template-columns:240px 1fr;gap:30px;padding:25px 0 28px;border-bottom:1px solid var(--line)}
.factrow h3{font-family:var(--serif);font-size:26px;letter-spacing:-.02em;margin:0}
.factrow p{font-size:16px;line-height:1.7;margin:0;color:var(--body)}
.notice{border-left:3px solid var(--blue);padding:10px 0 12px 21px;margin-top:34px;font-size:15px;line-height:1.7;color:var(--body)}
.big-inset{padding:97px 0;background:#0a2d47;color:#fff}
.big-inset .page-content-grid{align-items:start}
.big-inset .label{color:#b6d6e8}
.big-inset blockquote{font-family:var(--serif);font-size:clamp(40px,4.7vw,67px);letter-spacing:-.035em;line-height:1.13;margin:0;max-width:840px}
.backline{padding:28px 0;border-top:1px solid var(--line)}
.backline a{font-size:13px;color:var(--blue);font-weight:600}
@media(max-width:1060px){
 .masthead-brand{flex-basis:250px}.masthead-brand img{width:250px}.nav{gap:18px;font-size:12px}
 .interlude-grid,.work-head,.agenda-main,.page-content-grid{grid-template-columns:190px 1fr;gap:40px}
 .work-row{grid-template-columns:minmax(220px,1fr) minmax(220px,1fr);gap:20px}
 .footer-identity img{width:390px}
}
@media(max-width:780px){
 .masthead-inner{min-height:83px}.masthead-brand{flex:0 1 255px}.masthead-brand img{width:255px}
 .menu-toggle{display:inline-flex}
 .nav{display:none;position:absolute;top:83px;left:0;right:0;z-index:30;padding:16px var(--gutter) 22px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 16px 22px #0f151f17;flex-direction:column;align-items:stretch;gap:0}
 .nav.open{display:flex}.nav a{font-size:16px;min-height:46px;border-bottom:1px solid #e3e8eb;padding:13px 0}.nav a:after{bottom:6px}
 .home-hero{padding:62px 0 68px}.hero-supra{grid-template-columns:1fr;gap:5px;padding-bottom:13px}.hero-supra .label:last-child{text-align:left}
 .hero-title{font-size:clamp(57px,8.4vw,83px);margin:22px 0 44px}
 .hero-foot{grid-template-columns:1fr;gap:35px}.hero-rail{border-left:0;border-top:1px solid var(--line);padding:20px 0 0;max-width:560px}
 .interlude,.work,.closing,.page-section{padding:72px 0 78px}
 .interlude-grid,.work-head,.agenda-main,.page-content-grid,.closing-grid{grid-template-columns:1fr;gap:24px}
 .interlude-heading,.work-head h2{margin-top:0}
 .work-row{grid-template-columns:1fr;gap:15px;padding:25px 0 29px}
 .work-row p{grid-column:1;grid-row:2}
 .agenda{padding:73px 0 86px}.agenda-grid{gap:30px}.agenda-title{margin:0 0 22px}
 .closing .text{padding-top:0}.closing h2{margin-top:0}
 .footer-main{flex-direction:column;gap:37px}.footer-base{margin-top:47px}
 .page-hero{padding:59px 0 65px}.page-hero h1{font-size:clamp(55px,8.4vw,83px);margin:40px 0 29px}
 .page-hero .page-intro{grid-template-columns:1fr;gap:25px}.page-hero .page-intro aside{max-width:750px}
 .factrow{grid-template-columns:1fr;gap:9px}
}
@media(max-width:500px){
 :root{--gutter:21px}
 .masthead-inner{min-height:78px}.masthead-brand{flex-basis:220px}.masthead-brand img{width:220px}.nav{top:78px}
 .hero-title{font-size:clamp(54px,12vw,67px);letter-spacing:-.035em;line-height:1.01;margin:23px 0 34px}
 .hero-lead{font-size:21px}.hero-links{gap:20px}
 .agenda-grid{grid-template-columns:1fr;row-gap:10px}
 .page-hero h1{font-size:clamp(54px,12vw,70px)}
 .page-hero .page-intro aside{padding-left:18px}
 .footer-nav{gap:11px 22px}.footer-identity img{width:min(320px,100%)}
 .footer-base{flex-direction:column}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}

/* GCAIRD v3.0: two curated language editions, one brand. */
.header-actions{display:flex;align-items:center;justify-content:flex-end;gap:15px;order:2;flex-shrink:0}
.masthead-brand{order:0}
.nav{order:1;margin-left:auto}
.language-switch{display:inline-flex;align-items:center;gap:4px;white-space:nowrap;font-size:12px;color:var(--muted);font-weight:600}
.language-switch a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:35px;border-bottom:2px solid transparent;padding:1px 3px 0;text-decoration:none}
.language-switch a[aria-current="true"]{color:var(--blue);border-bottom-color:var(--blue)}
.language-switch a:hover{color:var(--blue)}
.brand-mobile{display:none;align-items:center;gap:8px;color:var(--ink);font-family:Georgia,'Times New Roman',serif;font-size:24px;letter-spacing:-.035em;line-height:1}
.brand-mobile img{width:38px!important;height:38px!important;object-fit:contain}
/* Hong Kong Traditional Chinese: typographic equivalence, not a forced Latin look. */
html[lang="zh-HK"]{font-synthesis:none}
html[lang="zh-HK"] body{font-family:'Noto Sans TC','PingFang TC','Microsoft JhengHei','Heiti TC',system-ui,sans-serif;letter-spacing:0}
html[lang="zh-HK"] h1,html[lang="zh-HK"] h2,html[lang="zh-HK"] h3,html[lang="zh-HK"] .hero-lead,html[lang="zh-HK"] .agenda-title,html[lang="zh-HK"] .page-hero .page-intro p{font-family:'Noto Serif TC','Songti TC','PMingLiU',serif;font-weight:500;letter-spacing:0;line-height:1.25}
html[lang="zh-HK"] .hero-title{font-size:clamp(52px,6vw,83px);max-width:1030px;line-height:1.2;letter-spacing:0}
html[lang="zh-HK"] .page-hero h1{font-size:clamp(52px,6vw,80px);line-height:1.2}
html[lang="zh-HK"] .label{font-size:12px;letter-spacing:.035em;text-transform:none}
html[lang="zh-HK"] .text,html[lang="zh-HK"] .prose{line-height:1.95}
html[lang="zh-HK"] .hero-lead{line-height:1.65}
html[lang="zh-HK"] .work-row p,html[lang="zh-HK"] .factrow p,html[lang="zh-HK"] .page-hero .page-intro aside{line-height:1.85}
html[lang="zh-HK"] .footer-identity p{letter-spacing:0;text-transform:none}
@media(max-width:1060px){
 .masthead-brand{flex-basis:245px}.masthead-brand img{width:245px}
 .masthead-inner{gap:15px}.nav{gap:12px}
 .header-actions{gap:7px}
}
@media(max-width:780px){
 .nav{order:3;margin:0}
 .masthead-inner{gap:10px}
 .header-actions{margin-left:auto;gap:10px}
 html[lang="zh-HK"] .hero-title{font-size:clamp(45px,7.5vw,72px)}
 html[lang="zh-HK"] .page-hero h1{font-size:clamp(46px,7vw,72px)}
}
@media(max-width:560px){
 .masthead-brand{flex-basis:auto;max-width:140px}
 .masthead-brand > img{display:none}
 .masthead-brand .brand-mobile{display:inline-flex}
 .header-actions{gap:8px}
 .language-switch{gap:2px;font-size:12px}
 .language-switch a{min-width:30px;padding-inline:2px}
 html[lang="zh-HK"] .hero-title{font-size:clamp(43px,11.2vw,59px)}
 html[lang="zh-HK"] .page-hero h1{font-size:clamp(43px,11vw,61px)}
 html[lang="zh-HK"] .page-hero .page-intro p{font-size:23px}
}