:root{--ink:#103c42;--teal:#0b4b55;--muted:#52696d;--aqua:#a9d5ce;--gold:#b68c4c;--line:#d6e0df;--paper:#fff;--page:min(1240px,calc(100% - 96px))}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--paper);color:var(--ink);font-family:'Helvetica Neue',Arial,'PingFang HK','Microsoft JhengHei',sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:3px solid #b68c4c;outline-offset:5px}button{cursor:pointer}p{text-wrap:pretty}h1,h2,h3{text-wrap:balance}section[id]{scroll-margin-top:20px}.skip-link{position:fixed;left:20px;top:-90px;background:white;padding:12px;z-index:100}.skip-link:focus{top:10px}
.site-header{position:sticky;top:0;z-index:40;min-height:88px;padding:16px max(32px,calc((100% - 1360px)/2));display:flex;align-items:center;justify-content:space-between;gap:24px;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px}.brand>img{width:48px;height:48px;object-fit:contain}.brand-text{display:grid;gap:3px;line-height:1.3}.brand-text strong{font-size:16px;letter-spacing:.025em}.brand-text small{font-size:14px;letter-spacing:.2em;color:var(--muted)}.desktop-nav{display:flex;gap:24px;font-size:14px}.desktop-nav a{padding:10px 0;border-bottom:1px solid transparent}.desktop-nav a:hover{border-color:var(--teal)}.header-actions{display:flex;align-items:center;gap:14px}.language-toggle,.menu-toggle{border:0;color:var(--ink);background:transparent;min-height:44px;min-width:44px}.header-cta{font-size:14px;background:var(--teal);color:white;padding:12px 18px}.menu-toggle{display:none;font-size:24px}.mobile-nav{display:none}.mobile-nav.open{display:grid;position:fixed;top:88px;left:0;right:0;z-index:39;padding:20px 32px;background:white;border-bottom:1px solid var(--line);box-shadow:0 18px 24px #103c4212}.mobile-nav a{padding:10px 0}
.hero{width:var(--page);margin:auto;display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:center;padding:72px 0 64px;min-height:690px}.eyebrow,.section-label{font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;margin:0 0 26px}.eyebrow{max-width:450px;line-height:1.9;color:var(--muted)}.hero h1{font-size:clamp(48px,4.9vw,72px);line-height:1.06;letter-spacing:-.045em;font-weight:500;margin:0}.hero h1 span{display:block}.rotating-line{color:var(--teal);margin-top:8px}.hero-intro{font-size:17px;max-width:480px;color:var(--muted);margin:26px 0 0}.hero-buttons{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}.button{font-size:14px;min-height:50px;padding:12px 18px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--teal)}.button-primary{background:var(--teal);color:white}.button-secondary{border-color:var(--line)}.button:hover,.header-cta:hover{background:#24616b;color:white}.hero-visual{position:relative;height:548px;background:var(--teal);overflow:hidden}.hero-photo{position:absolute;inset:0 0 90px}.hero-photo img{width:100%;height:100%;object-fit:cover}.hero-photo:after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,#0b4b5540,transparent 60%)}.hero-caption{position:absolute;left:28px;bottom:23px;color:white;display:grid;gap:4px}.hero-caption strong{font-size:16px;font-weight:500;letter-spacing:.15em}.hero-caption span{font-size:12px;color:#cee3e1;letter-spacing:.08em}.hero-watermark,.vertical-line{display:none}.signal-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#f3f7f6}.signal-track{width:var(--page);margin:auto;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:24px 0;font-size:13px;letter-spacing:.06em}.signal-track span{border-left:2px solid var(--gold);padding-left:15px}
.section{position:relative;width:var(--page);margin:auto;padding:96px 0}.section-index{position:absolute;right:0;top:38px;font-size:14px;letter-spacing:.1em;color:var(--muted)}.section-label{color:var(--teal)}.section h2{font-size:clamp(34px,3.6vw,52px);font-weight:500;letter-spacing:-.035em;line-height:1.14;margin:0}.section-heading{max-width:730px;margin-bottom:44px}.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:90px}.about-copy{padding-top:44px}.about-copy p{font-size:16px;color:var(--muted);margin:0 0 20px}.about-copy .lead{font-size:21px;color:var(--ink);line-height:1.55}.credentials{margin-top:45px;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.credentials article{padding:26px 24px;border-right:1px solid var(--line)}.credentials article:first-child{padding-left:0}.credentials article:last-child{border:0}.credentials strong{display:block;font-size:24px;font-weight:500}.credentials span{display:block;font-size:14px;color:var(--muted);margin-top:6px}
.services,.projects,.structure,.leadership{border-top:1px solid var(--line)}.service-list{display:grid;grid-template-columns:repeat(3,1fr);border-left:1px solid var(--line);border-top:1px solid var(--line)}.service-card{padding:28px;display:flex;flex-direction:column;gap:26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#f7f9f8}.service-number{color:#86622e;font-size:13px;letter-spacing:.12em}.service-card h3{font-size:23px;font-weight:500;line-height:1.3;margin:0;letter-spacing:-.02em}.service-card p{font-size:16px;color:var(--muted);margin:16px 0 0}.projects-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.project-card{position:relative;min-width:0;background:#f3f7f6;overflow:hidden}.project-card>img:not(.graphic-logo){width:100%;height:300px;object-fit:cover}.project-overlay{padding:26px 28px 30px}.project-overlay span{font-size:12px;letter-spacing:.1em;color:var(--muted);text-transform:uppercase}.project-overlay h3{font-size:28px;font-weight:500;line-height:1.25;margin:10px 0;letter-spacing:-.02em}.project-overlay p{font-size:14px;margin:0;color:var(--muted)}.project-graphic{background:var(--teal);color:white;min-height:235px;display:flex;align-items:flex-end}.project-graphic.inverse{background:#173c43}.project-graphic .project-overlay{z-index:1;max-width:90%}.project-graphic .project-overlay span,.project-graphic .project-overlay p{color:#d0e1df}.graphic-logo{position:absolute;width:150px;right:20px;top:20px;filter:brightness(0) invert(1);opacity:.07}
.structure-grid{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center}.entity-stack{display:grid}.entity{padding:26px 30px;border:1px solid var(--line)}.entity.primary{background:var(--teal);color:white;border-color:var(--teal)}.entity span{display:block;font-size:12px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:12px}.entity strong{display:block;font-size:25px;font-weight:500;line-height:1.3}.entity small{display:block;font-size:14px;margin-top:8px}.entity-link{height:32px;border-left:1px solid var(--gold);margin-left:30px}.leadership-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.person-card{border-top:2px solid var(--teal);background:#f3f7f6}.person-copy{padding:30px}.person-role{font-size:12px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase}.person-copy h3{font-size:32px;line-height:1.2;font-weight:500;margin:16px 0}.person-copy p{font-size:16px;margin:0;color:var(--muted)}
.contact{background:var(--teal);color:white}.contact-top{position:relative;width:var(--page);margin:auto;padding:70px 0 50px;overflow:hidden}.contact-title{max-width:780px;position:relative;z-index:1}.contact-title .section-label{color:var(--aqua)}.contact-title h2{font-size:clamp(36px,4.7vw,66px);line-height:1.13;letter-spacing:-.035em;font-weight:500;margin:0}.contact-watermark{position:absolute;width:230px;right:0;top:45px;filter:brightness(0) invert(1);opacity:.06}.contact-bar{width:var(--page);margin:auto;display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;padding:36px 0 54px;border-top:1px solid #ffffff30}.contact-brand{display:flex;flex-direction:column;gap:8px}.contact-brand strong{font-size:27px;font-weight:400;letter-spacing:.12em}.contact-brand span{font-size:12px;letter-spacing:.14em}.contact-details{display:grid;grid-template-columns:1fr 1fr;gap:24px}.contact-details a,.contact-details p{margin:0;font-size:16px;overflow-wrap:anywhere}.contact-details small{display:block;color:#bad4d2;font-size:12px;letter-spacing:.1em;margin-bottom:6px;text-transform:uppercase}.contact-details a:hover{text-decoration:underline;text-underline-offset:4px}footer{padding:28px max(48px,calc((100% - 1240px)/2));display:grid;grid-template-columns:1fr 1fr auto;gap:26px;align-items:center;background:#092f35;color:#c2d5d3;font-size:12px}footer p{margin:0}.footer-brand{display:flex;align-items:center;gap:12px}.footer-brand img{width:38px;filter:brightness(0) invert(1)}.footer-brand div{display:grid;gap:3px}.footer-brand strong{font-size:14px;font-weight:500;color:white}
html[lang=zh-Hant] h1,html[lang=zh-Hant] h2{line-height:1.28;letter-spacing:.01em}html[lang=zh-Hant] .hero h1{font-size:clamp(42px,4.6vw,64px)}
@media(min-width:1600px){.hero{padding:90px 0}.hero-visual{height:600px}}
@media(max-width:1150px){.desktop-nav{gap:16px}.header-cta{display:none}.hero{gap:36px}.service-card{padding:23px}.about-grid,.structure-grid{gap:50px}footer{grid-template-columns:1fr 1fr}footer>p:last-child{grid-column:1/-1}}
@media(max-width:850px){:root{--page:calc(100% - 48px)}.desktop-nav{display:none}.menu-toggle{display:block}.site-header{padding:14px 24px}.hero{grid-template-columns:1fr 1fr;min-height:auto;padding:48px 0;gap:28px}.hero h1{font-size:44px}.hero-visual{height:480px}.hero-intro{font-size:16px}.hero-buttons{gap:10px}.button{font-size:13px;padding:12px 14px}.signal-track{grid-template-columns:1fr 1fr;gap:16px}.section{padding:72px 0}.about-grid,.structure-grid{grid-template-columns:1fr;gap:28px}.about-copy{padding:0}.service-list{grid-template-columns:1fr 1fr}.contact-bar{grid-template-columns:1fr;gap:30px}.project-card>img:not(.graphic-logo){height:240px}.project-overlay{padding:22px}.project-overlay h3{font-size:24px}.credentials article{padding:22px 16px}.credentials strong{font-size:21px}}
@media(max-width:600px){:root{--page:calc(100% - 40px)}html{scroll-padding-top:100px}.site-header{padding:12px 20px;min-height:78px;gap:8px}.brand{gap:8px}.brand>img{width:36px;height:38px}.brand-text strong{font-size:13px}.brand-text small{font-size:12px}.header-actions{gap:0}.mobile-nav.open{top:78px;padding:16px 20px}.hero{grid-template-columns:1fr;padding:38px 0 32px;gap:32px}.hero h1{font-size:clamp(40px,10.5vw,57px)}.eyebrow{font-size:12px;margin-bottom:20px}.hero-intro{margin-top:22px}.hero-buttons{margin-top:24px}.hero-visual{height:370px}.hero-photo{bottom:80px}.hero-caption{left:22px;bottom:17px}.signal-track{font-size:12px;gap:14px;padding:20px 0}.signal-track span{padding-left:10px}.section{padding:60px 0}.section-index{top:22px;font-size:12px}.section-heading{margin-bottom:30px}.section h2{font-size:34px}.section-label{margin-bottom:18px}.credentials{grid-template-columns:1fr;margin-top:30px}.credentials article,.credentials article:first-child{padding:20px 0;border-right:0;border-bottom:1px solid var(--line)}.service-list,.projects-grid,.leadership-grid{grid-template-columns:1fr}.service-card{padding:24px;gap:18px}.projects-grid{gap:20px}.project-card>img:not(.graphic-logo){height:250px}.project-graphic{min-height:215px}.person-copy{padding:26px}.person-copy h3{font-size:29px}.contact-top{padding:55px 0 35px}.contact-title h2{font-size:38px}.contact-details{grid-template-columns:1fr}.contact-bar{padding-bottom:40px}.entity{padding:24px}.entity strong{font-size:22px}footer{padding:28px 20px;grid-template-columns:1fr;gap:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}

/* v1.3: targeted additions to v1.1 */
.hero .eyebrow{max-width:100%;letter-spacing:.1em}
.desktop-nav{gap:18px;white-space:nowrap}.desktop-nav a[href="#bhu"]{font-weight:600}
.bhu-card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;min-height:74px}.bhu-official-link{display:flex;flex-direction:column;align-items:center;gap:7px}.bhu-official-link img{width:116px;height:auto;object-fit:contain}.bhu-official-link span{font-size:12px;letter-spacing:.02em;color:var(--muted)}.bhu-official-link:hover span{text-decoration:underline;text-underline-offset:3px}.bhu-service{scroll-margin-top:112px}.bhu-service:target{outline:2px solid var(--gold);outline-offset:-2px}
@media(min-width:851px) and (max-width:1100px){.site-header{gap:14px;padding-left:24px;padding-right:24px}.desktop-nav{gap:12px;font-size:13px}.brand-text strong{font-size:14px}}
@media(max-width:600px){.hero .eyebrow{font-size:12px;letter-spacing:.07em}.bhu-service{scroll-margin-top:98px}}