:root {
  color-scheme: light;
  --bg: #ffffff; --surface: #f5f7f8; --text: #21282c; --muted: #58646a;
  --line: #dce2e5; --accent: #10675b; --accent-soft: #eaf4f0; --secondary: #946b28;
  --header: rgba(255,255,255,.96);
}
html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #191d1e; --surface: #222728; --text: #edf0ef; --muted: #b1bbbd;
  --line: #3b4446; --accent: #8fd8c8; --accent-soft: #243d36; --secondary: #dfbd81;
  --header: rgba(25,29,30,.97);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif; font-size: 16px; line-height: 1.8; letter-spacing: 0; -webkit-font-smoothing: antialiased; }
h1,h2,h3,h4,p,figure { margin: 0; }
h1,h2,h3,h4 { line-height: 1.4; font-weight: 600; }
h2 { font-size: 30px; }
h3 { font-size: 21px; }
h4 { font-size: 16px; }
p + p { margin-top: 12px; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; color: inherit; }
img { display: block; max-width: 100%; }
button,a,summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
[id] { scroll-margin-top: 16px; }
p,h1,h2,h3,h4,dd,a,strong,span { overflow-wrap: anywhere; }
.container { width: min(1120px,100% - 64px); margin-inline: auto; }
.muted,.role { color: var(--muted); }
.eyebrow,.meta,.number { color: var(--muted); font-size: 13px; }
.eyebrow { margin-bottom: 16px; }
.text-link { display: inline-flex; align-items: center; gap: 12px; color: var(--accent); border-bottom: 1px solid currentColor; font-size: 15px; }
.text-link:hover { color: var(--text); }
.skip-link { position: fixed; top: -100px; left: 20px; z-index: 100; background: var(--bg); padding: 12px; }
.skip-link:focus { top: 12px; }
.header { position: sticky; top: 0; z-index: 20; background: var(--header); border-bottom: 1px solid var(--line); }
.header-inner { min-height: 72px; display: flex; align-items: center; gap: 26px; }
.logo { font-size: 18px; font-weight: 650; white-space: nowrap; }
.logo span { color: var(--muted); font-size: 13px; font-weight: 400; margin-left: 6px; }
nav { display: flex; align-items: center; gap: 26px; margin-left: auto; }
nav a { font-size: 14px; padding: 23px 0; border-bottom: 2px solid transparent; color: var(--muted); }
nav a:hover,nav a[aria-current] { color: var(--accent); border-color: var(--accent); }
.theme-toggle,.menu-toggle { flex-shrink: 0; width: 40px; height: 40px; padding: 0; display: grid; place-items: center; background: transparent; border: 1px solid var(--line); border-radius: 6px; font-size: 21px; }
.menu-toggle { display: none; }
.hero { display: grid; grid-template-columns: 1.45fr 1fr; column-gap: 64px; padding-block: 54px 46px; align-items: center; }
.hero h1 { font-size: 48px; margin-bottom: 18px; }
.hero-statement { font-size: 26px; font-weight: 500; line-height: 1.65; }
.hero-intro { margin-top: 22px; color: var(--muted); max-width: 560px; }
.hero-intro .muted { font-size: 14px; }
.hero-actions { margin-top: 28px; display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 30px; min-height: 46px; padding: 9px 18px; border: 1px solid var(--accent); border-radius: 5px; font-size: 15px; }
.primary { background: var(--accent); color: var(--bg); }
.primary:hover { filter: brightness(.9); }
figcaption { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 12px; margin-top: 12px; }
.capability-band { border-block: 1px solid var(--line); }
.capability-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); }
.capability-grid a { padding: 24px 28px; border-left: 1px solid var(--line); display: flex; flex-direction: column; gap: 6px; transition: background .15s; }
.capability-grid a:first-child { border-left: 0; padding-left: 0; }
.capability-grid a:hover { background: var(--surface); }
.capability-grid strong { font-size: 19px; }
.capability-grid a > span:last-child { color: var(--muted); font-size: 14px; }
.section { padding-block: 72px; }
.section-tint { background: var(--surface); border-block: 1px solid var(--line); }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; margin-bottom: 38px; }
.section-heading > p { font-size: 14px; color: var(--muted); }
.section-heading .eyebrow { margin-bottom: 10px; }
.case { padding: 30px 0; border-top: 1px solid var(--line); }
.case:first-child { padding-top: 26px; }
.case-heading { display: flex; gap: 22px; }
.case-index { font-size: 22px; color: var(--secondary); font-variant-numeric: tabular-nums; padding-top: 3px; }
.case-heading h3 { margin-block: 8px; }
.meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.status { font-size: 12px; background: var(--accent-soft); color: var(--accent); padding: 2px 8px; border-radius: 4px; }
.role { font-size: 13px; }
.case-lead { margin: 20px 0; max-width: 900px; }
.case-facts { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 28px; margin: 22px 0; }
.case-facts div { border-left: 2px solid var(--line); padding-left: 16px; }
dt { font-size: 13px; color: var(--muted); margin-bottom: 6px; }
dd { margin: 0; font-size: 15px; }
details { border-top: 1px solid var(--line); }
summary { position: relative; cursor: pointer; list-style: none; padding: 16px 34px 16px 0; color: var(--accent); font-size: 15px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 6px; top: 15px; width: 20px; text-align: center; font-size: 20px; line-height: 1.5; font-weight: 400; }
details[open] > summary::after { content: "−"; }
summary:hover { color: var(--text); }
.detail-body { max-width: 880px; padding: 6px 0 24px; color: var(--muted); font-size: 15px; }
.detail-body h4 { color: var(--text); margin: 18px 0 8px; }
.detail-body h4:first-child { margin-top: 0; }
.detail-body .text-link { margin-top: 16px; }
.detail-body ul { margin: 0; padding-left: 22px; }
.detail-body li + li { margin-top: 8px; }
.archive { margin-top: 26px; border-bottom: 1px solid var(--line); }
.archive > summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 22px; color: var(--text); font-size: 18px; }
.archive > summary::after { top: 23px; }
summary small { display: block; color: var(--muted); font-size: 13px; font-weight: 400; margin-top: 4px; }
.count { font-size: 13px; color: var(--muted); flex-shrink: 0; }
.archive-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 30px 48px; padding-block: 14px 30px; }
.archive-grid article { border-top: 1px solid var(--line); padding-top: 18px; }
.archive-grid h3 { font-size: 19px; margin-block: 10px; }
.archive-grid p { font-size: 15px; }
.platform { margin-bottom: 36px; }
.platform-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 48px; }
.platform-intro .meta { grid-column: 1/-1; }
.platform-intro h3 { font-size: 24px; max-width: 420px; }
.platform-intro > p:last-child { color: var(--muted); font-size: 15px; }
.platform-steps { padding: 0; margin: 28px 0; list-style: none; display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 24px; }
.platform-steps li { display: flex; gap: 12px; border-top: 2px solid var(--line); padding-top: 16px; }
.platform-steps li > span { color: var(--secondary); font-size: 13px; padding-top: 3px; }
.platform-steps p { font-size: 14px; color: var(--muted); margin-top: 8px; }
.notes-list { border-bottom: 1px solid var(--line); }
.notes-list summary { color: var(--text); padding-block: 22px; font-size: 19px; }
.notes-list summary small { margin: 0 0 5px; }
.notes-list summary::after { top: 28px; }
.collaboration-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; }
.collaboration-grid h3 { margin: 12px 0 16px; }
.collaboration-grid p { color: var(--muted); font-size: 15px; }
.collaboration-grid .course-title { color: var(--text); }
.collaboration-grid details { margin-top: 20px; }
.method-strip { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); list-style: none; padding: 0; margin: 24px 0; gap: 10px 20px; counter-reset: method; }
.method-strip li { border-bottom: 1px solid var(--line); padding-block: 8px; font-size: 14px; counter-increment: method; }
.method-strip li::before { content: counter(method,decimal-leading-zero); color: var(--secondary); margin-right: 10px; font-size: 12px; }
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { display: grid; grid-template-columns: 190px 1fr; gap: 28px; border-top: 1px solid var(--line); padding-block: 24px; }
.timeline li > .meta { align-self: start; margin-top: 4px; }
.timeline h3 { font-size: 19px; margin-bottom: 8px; }
.timeline p { font-size: 15px; }
.timeline p + p { margin-top: 4px; }
.education { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; padding: 26px 0; border-block: 1px solid var(--line); }
.education h3 { font-size: 18px; margin-top: 8px; }
.education p { font-size: 14px; color: var(--muted); }
.recognition-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; margin-top: 46px; }
.subheading { font-size: 20px; margin-bottom: 20px; }
.award-list { list-style: none; padding: 0; margin: 0; }
.award-list li { display: grid; grid-template-columns: 70px 1fr; gap: 16px; border-top: 1px solid var(--line); padding-block: 16px; }
.award-list time { font-size: 12px; color: var(--muted); padding-top: 2px; }
.award-list strong { font-size: 14px; font-weight: 500; display: block; }
.award-list p { font-size: 13px; color: var(--muted); margin-top: 5px; }
.cert-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px 16px; }
.cert-card { min-width: 0; }
.cert-card img { width: 100%; height: auto; aspect-ratio: 4/3; object-fit: contain; background: #fff; border: 1px solid var(--line); border-radius: 5px; }
.cert-card figcaption { display: block; margin-top: 10px; }
.cert-card strong { display: block; font-size: 14px; font-weight: 500; color: var(--text); }
.cert-card figcaption span { display: block; font-size: 12px; margin-top: 2px; }
.hero-carousel { min-width: 0; width: 100%; align-self: center; touch-action: pan-y; }
.carousel-viewport { display: grid; border-radius: 6px; overflow: hidden; background: var(--surface); }
.carousel-slide { grid-area: 1/1; width: 100%; min-width: 0; visibility: hidden; opacity: 0; transition: opacity .35s ease; pointer-events: none; }
.carousel-slide.is-active { visibility: visible; opacity: 1; pointer-events: auto; }
.carousel-slide img { width: 100%; height: auto; aspect-ratio: 4/3; object-fit: contain; background: var(--surface); }
.carousel-slide figcaption { margin: 0; min-height: 42px; padding: 10px 12px; color: var(--muted); font-size: 13px; }
.carousel-controls { display: flex; align-items: center; justify-content: center; gap: 8px; padding-top: 10px; }
.icon-button { width: 40px; height: 40px; flex-shrink: 0; display: grid; place-items: center; padding: 0; border: 1px solid var(--line); border-radius: 5px; background: var(--bg); font-size: 24px; line-height: 1; }
.icon-button:hover { border-color: var(--accent); color: var(--accent); }
.carousel-pause { font-size: 16px; }
.carousel-dots { display: flex; align-items: center; }
.carousel-dots button { position: relative; width: 26px; height: 40px; padding: 0; background: transparent; border: 0; }
.carousel-dots button::before { content: ""; display: block; width: 6px; height: 6px; border-radius: 50%; margin: auto; background: var(--muted); opacity: .4; }
.carousel-dots button[aria-current]::before { width: 8px; height: 8px; background: var(--accent); opacity: 1; }
.carousel-counter { min-width: 34px; font-variant-numeric: tabular-nums; font-size: 12px; text-align: center; color: var(--muted); }
.contact { border-block: 1px solid var(--line); background: var(--surface); padding-block: 44px; }
.contact-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.contact h2 { font-size: 23px; margin-bottom: 12px; }
.contact p { color: var(--muted); font-size: 14px; }
.contact .text-link { flex-shrink: 0; }
.footer { padding-block: 24px; display: flex; justify-content: space-between; gap: 20px; font-size: 12px; color: var(--muted); }
@media(max-width:960px) {
  .header-inner { gap: 16px; } nav { gap: 16px; }
  .hero { gap: 32px; grid-template-columns: 1.3fr 1fr; padding-top: 42px; }
  .hero h1 { font-size: 40px; } .hero-statement { font-size: 23px; }
  .hero-intro { font-size: 15px; }
  .collaboration-grid,.recognition-grid { gap: 36px; }
  .capability-grid a { padding-inline: 18px; }
  .platform-steps { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media(max-width:760px) {
  .container { width: calc(100% - 40px); }
  .header-inner { min-height: 64px; } .logo { margin-right: auto; }
  .menu-toggle { display: grid; }
  nav { display: none; position: absolute; top: 100%; left: 0; right: 0; padding: 10px 20px 20px; background: var(--bg); border-bottom: 1px solid var(--line); }
  nav.open { display: flex; flex-direction: column; gap: 0; align-items: stretch; }
  nav a { padding: 12px 0; }
  .hero { grid-template-columns: 1fr; padding-block: 32px; gap: 26px; }
  .hero h1 { font-size: 38px; margin-bottom: 12px; } .hero-statement { font-size: 23px; }
  .hero .eyebrow { margin-bottom: 10px; } .hero-intro { margin-top: 16px; }
  .hero-actions { margin-top: 20px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-grid a,.capability-grid a:first-child { padding: 16px 0; border-left: 0; border-top: 1px solid var(--line); }
  .capability-grid a:first-child { border-top: 0; }
  .capability-grid strong { font-size: 18px; }
  .section { padding-block: 48px; } h2 { font-size: 26px; } h3 { font-size: 20px; }
  .section-heading { display: block; margin-bottom: 26px; }
  .section-heading > p { margin-top: 14px; } .section-heading > p br { display: none; }
  .case-heading { gap: 14px; } .case-facts { grid-template-columns: 1fr; gap: 18px; }
  .archive-grid,.platform-intro,.collaboration-grid,.recognition-grid { grid-template-columns: 1fr; }
  .platform-intro { gap: 12px; } .platform-intro h3 { font-size: 22px; }
  .timeline li { grid-template-columns: 1fr; gap: 8px; } .education { gap: 20px; }
  .recognition-grid { gap: 36px; }
  .contact-inner { display: block; } .contact .text-link { margin-top: 20px; }
  .contact h2 { font-size: 22px; }
}
@media(max-width:380px) {
  .container { width: calc(100% - 32px); }
  .hero-statement { font-size: 21px; } .hero-actions { gap: 18px; }
  .education,.platform-steps { grid-template-columns: 1fr; }
  .award-list li { grid-template-columns: 60px 1fr; gap: 10px; }
}
@media(prefers-reduced-motion:reduce) {
  html { scroll-behavior: auto; }
  *,*::before,*::after { transition: none !important; animation: none !important; }
}
@media print {
  :root,html[data-theme="dark"] { --bg: white; --surface: white; --text: black; --muted: #444; --line: #ccc; --accent: #222; }
  .header,.hero-actions,.theme-toggle,.menu-toggle,.skip-link,.hero-carousel,.footer a { display: none; }
  .container { width: 100%; } .section,.hero { padding-block: 20px; } .hero { display: block; }
  .case { break-inside: avoid; } .contact { padding-block: 16px; }
}

/* Keep the photo visible on phones; compact the introduction without nesting scroll areas. */
@media (max-width:760px) {
  .hero { padding-block: 22px 28px; gap: 20px; }
  .hero h1 { font-size: 34px; margin-bottom: 8px; }
  .hero-statement { font-size: 21px; line-height: 1.55; }
  .hero-intro { font-size: 14px; line-height: 1.7; margin-top: 14px; }
  .hero-intro .muted { font-size: 13px; }
  .hero-actions { margin-top: 16px; }
  .hero-carousel { max-width: 520px; justify-self: center; }
  .carousel-slide img { aspect-ratio: 16/10; }
  .carousel-controls { gap: 10px; }
  .recognition-grid { grid-template-columns: 1fr; }
  .cert-grid { gap: 22px 14px; }
  .header-inner { gap: 12px; }
  .theme-toggle,.menu-toggle,.icon-button { width: 44px; height: 44px; }
  .carousel-dots button { width: 28px; height: 44px; }
}
@media (max-width:380px) {
  .cert-grid { grid-template-columns: 1fr; }
  .carousel-controls { gap: 4px; }
  .carousel-dots button { width: 24px; }
  .hero-statement { font-size: 20px; }
}