:root {
  --navy-950: #071724;
  --navy-900: #0b2135;
  --navy-800: #11334d;
  --navy-700: #1b4965;
  --teal-600: #128f83;
  --teal-500: #25b6a4;
  --teal-300: #80dace;
  --teal-100: #dbf4f0;
  --blue-100: #e7f2f6;
  --ink: #132939;
  --muted: #5d7180;
  --line: #d8e2e7;
  --paper: #f8fbfc;
  --white: #ffffff;
  --shadow-sm: 0 14px 36px rgba(11, 33, 53, .08);
  --shadow-lg: 0 30px 70px rgba(4, 22, 35, .25);
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 32px;
  --container: 1180px;
  --header-height: 82px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 24px); }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
img { display: block; max-width: 100%; }
svg { display: block; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.section { padding: 118px 0; }
.section-dark { color: var(--white); background: var(--navy-950); }

.skip-link {
  position: fixed; top: 10px; left: 10px; z-index: 1000;
  padding: 10px 16px; background: var(--white); color: var(--navy-950);
  border-radius: 8px; transform: translateY(-150%); transition: transform .2s;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed; inset: 0 0 auto; z-index: 100;
  height: var(--header-height); border-bottom: 1px solid rgba(255,255,255,.08);
  transition: background .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.site-header.scrolled {
  background: rgba(248,251,252,.94); backdrop-filter: blur(16px);
  border-color: rgba(13,44,64,.09); box-shadow: 0 8px 28px rgba(9,31,47,.08);
}
.nav-wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: max-content; }
.brand-mark { width: 43px; height: 43px; display: grid; place-items: center; border-radius: 13px; background: var(--teal-500); }
.brand-mark svg { width: 34px; height: 34px; fill: var(--white); }
.brand-mark svg circle { fill: var(--navy-950); }
.brand-copy { display: grid; line-height: 1.25; }
.brand-copy strong { font-size: .94rem; letter-spacing: -.01em; }
.brand-copy small { margin-top: 3px; color: rgba(255,255,255,.58); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; }
.site-header.scrolled .brand-copy strong { color: var(--navy-950); }
.site-header.scrolled .brand-copy small { color: var(--muted); }
.desktop-nav { display: flex; align-items: center; gap: 28px; margin-left: auto; }
.desktop-nav a { color: rgba(255,255,255,.68); font-size: .85rem; font-weight: 650; transition: color .2s; }
.desktop-nav a:hover, .desktop-nav a:focus-visible { color: var(--white); }
.site-header.scrolled .desktop-nav a { color: #4d6676; }
.site-header.scrolled .desktop-nav a:hover { color: var(--teal-600); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.lang-toggle { border: 1px solid rgba(255,255,255,.2); color: rgba(255,255,255,.55); background: rgba(255,255,255,.06); border-radius: 999px; padding: 8px 12px; cursor: pointer; font-size: .74rem; font-weight: 800; letter-spacing: .05em; }
.lang-toggle .lang-active { color: var(--white); }
.site-header.scrolled .lang-toggle { color: #8a9aa4; border-color: var(--line); background: var(--white); }
.site-header.scrolled .lang-toggle .lang-active { color: var(--navy-950); }
.menu-toggle { display: none; width: 42px; height: 42px; border: 0; background: transparent; padding: 11px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; background: var(--white); margin: 5px 0; transition: transform .25s, opacity .25s; }
.site-header.scrolled .menu-toggle span { background: var(--navy-950); }
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-nav { display: none; }

.hero { position: relative; min-height: 800px; height: max(800px, 100vh); display: grid; align-items: center; overflow: hidden; padding: 120px 0 65px; }
.hero-grid-overlay { position: absolute; inset: 0; opacity: .18; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 70px 70px; mask-image: linear-gradient(to right, black, transparent 85%); }
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 130px; background: linear-gradient(to top, rgba(37,182,164,.06), transparent); }
.hero-orb { position: absolute; border-radius: 50%; filter: blur(1px); pointer-events: none; }
.hero-orb-one { width: 540px; height: 540px; right: -220px; top: 70px; border: 1px solid rgba(128,218,206,.15); box-shadow: inset 0 0 100px rgba(37,182,164,.08); }
.hero-orb-two { width: 270px; height: 270px; right: 22%; bottom: -100px; background: rgba(37,182,164,.08); filter: blur(40px); }
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr .75fr; align-items: center; gap: 90px; }
.eyebrow { color: var(--teal-600); font-size: .74rem; font-weight: 850; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow.light { color: var(--teal-300); }
.hero h1 { margin: 20px 0 26px; max-width: 720px; font-size: clamp(3.35rem, 6vw, 6.8rem); line-height: .96; letter-spacing: -.065em; font-weight: 720; }
.hero h1 span, .hero h1 em { display: block; }
.hero h1 em { font-family: Georgia, "Times New Roman", serif; font-weight: 400; color: var(--teal-300); letter-spacing: -.055em; }
.hero-lede { max-width: 650px; margin: 0; color: rgba(255,255,255,.68); font-size: 1.08rem; line-height: 1.8; }
.hero-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 35px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 0 22px; border-radius: 999px; font-size: .86rem; font-weight: 760; transition: transform .2s, box-shadow .2s, background .2s; }
.button svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--navy-950); background: var(--teal-300); box-shadow: 0 12px 30px rgba(37,182,164,.2); }
.button-primary:hover { background: #9ae7dd; box-shadow: 0 16px 38px rgba(37,182,164,.28); }
.button-ghost { color: var(--white); border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.04); }
.button-ghost:hover { background: rgba(255,255,255,.09); }
.button-dark { color: var(--white); background: var(--navy-900); }
.button-dark:hover { background: var(--navy-800); }
.hero-facts { display: flex; gap: 0; margin-top: 54px; }
.hero-facts > div { display: grid; gap: 2px; padding: 0 32px; border-left: 1px solid rgba(255,255,255,.13); }
.hero-facts > div:first-child { padding-left: 0; border-left: 0; }
.hero-facts strong { font-size: 1.42rem; color: var(--white); letter-spacing: -.03em; }
.hero-facts span { font-size: .7rem; color: rgba(255,255,255,.5); text-transform: uppercase; letter-spacing: .08em; }
.hero-visual { position: relative; justify-self: end; width: min(100%, 450px); }
.portrait-frame { position: relative; z-index: 2; padding: 13px; border: 1px solid rgba(255,255,255,.14); border-radius: 42% 42% 20px 20px; background: rgba(255,255,255,.05); box-shadow: var(--shadow-lg); }
.portrait-frame::before { content: ""; position: absolute; inset: 28px -24px -24px 28px; z-index: -1; border: 1px solid rgba(128,218,206,.22); border-radius: 42% 42% 22px 22px; }
.portrait-frame img { width: 100%; aspect-ratio: .86; object-fit: cover; object-position: center 25%; border-radius: 42% 42% 14px 14px; filter: saturate(.85) contrast(1.04); }
.portrait-accent { position: absolute; width: 72px; height: 72px; right: -18px; top: 96px; z-index: 3; border: 1px solid rgba(128,218,206,.4); border-radius: 50%; }
.portrait-accent::before, .portrait-accent::after { content: ""; position: absolute; inset: 50% auto auto 50%; width: 5px; height: 5px; border-radius: 50%; background: var(--teal-300); transform: translate(-50%,-50%); box-shadow: 0 -25px 0 rgba(128,218,206,.5), 22px 12px 0 rgba(128,218,206,.3), -22px 12px 0 rgba(128,218,206,.3); }
.portrait-label { position: absolute; z-index: 4; left: -42px; bottom: 40px; display: flex; align-items: center; gap: 12px; min-width: 245px; padding: 16px 18px; background: rgba(248,251,252,.96); color: var(--navy-950); border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); }
.portrait-label > div { display: grid; }
.portrait-label strong { font-size: .84rem; }
.portrait-label small { font-size: .68rem; color: var(--muted); }
.status-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--teal-500); box-shadow: 0 0 0 5px var(--teal-100); }
.molecule { position: absolute; width: 130px; height: 80px; opacity: .7; }
.molecule::before, .molecule::after { content: ""; position: absolute; height: 1px; background: rgba(128,218,206,.35); transform-origin: left; }
.molecule::before { width: 66px; left: 18px; top: 35px; transform: rotate(-18deg); }
.molecule::after { width: 56px; left: 72px; top: 16px; transform: rotate(48deg); }
.molecule i { position: absolute; width: 12px; height: 12px; border: 2px solid rgba(128,218,206,.7); border-radius: 50%; }
.molecule i:nth-child(1) { left: 5px; top: 38px; }
.molecule i:nth-child(2) { left: 69px; top: 15px; }
.molecule i:nth-child(3) { right: 0; bottom: 5px; }
.molecule-a { left: -78px; top: 90px; }
.molecule-b { right: -70px; bottom: 100px; transform: rotate(120deg); }
.hero-scroll { position: absolute; z-index: 2; bottom: 25px; left: 50%; width: 24px; height: 38px; border: 1px solid rgba(255,255,255,.22); border-radius: 20px; transform: translateX(-50%); }
.hero-scroll span { position: absolute; top: 8px; left: 50%; width: 4px; height: 4px; border-radius: 50%; background: var(--teal-300); transform: translateX(-50%); animation: scrollDot 1.8s infinite; }
@keyframes scrollDot { 0% { opacity: 0; transform: translate(-50%,0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translate(-50%,15px); } }

.section-heading { display: grid; grid-template-columns: 54px 1fr; gap: 22px; align-items: start; margin-bottom: 60px; }
.section-heading.split { display: flex; justify-content: space-between; align-items: end; gap: 50px; }
.section-heading.split .heading-main { display: grid; grid-template-columns: 54px 1fr; gap: 22px; align-items: start; }
.section-heading.split > p { max-width: 470px; margin: 0 0 5px; color: var(--muted); }
.section-heading.light h2 { color: var(--white); }
.section-number { color: var(--teal-600); font-size: .72rem; font-weight: 850; letter-spacing: .15em; padding-top: 7px; }
.section-dark .section-number { color: var(--teal-300); }
.section-heading h2 { margin: 8px 0 0; max-width: 800px; font-size: clamp(2.5rem, 4.6vw, 4.5rem); line-height: 1.02; letter-spacing: -.055em; font-weight: 700; color: var(--navy-950); }

.about { background: var(--white); }
.about-grid { display: grid; grid-template-columns: .86fr 1.14fr; gap: 90px; align-items: start; }
.about-grid .section-heading { position: sticky; top: 125px; }
.about-content .lead { margin: 0 0 35px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(1.65rem, 2.5vw, 2.25rem); line-height: 1.45; letter-spacing: -.025em; color: var(--navy-800); }
.about-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.about-columns p { margin: 0; color: var(--muted); }
.quote-block { display: grid; grid-template-columns: 42px 1fr; gap: 18px; margin-top: 45px; padding: 28px 30px; border-left: 3px solid var(--teal-500); background: var(--blue-100); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.quote-block svg { width: 34px; fill: var(--teal-500); opacity: .7; }
.quote-block p { margin: 0; color: var(--navy-700); font-weight: 600; }

.timeline-section { background: linear-gradient(180deg, #f0f6f8 0%, var(--paper) 100%); }
.timeline { position: relative; max-width: 980px; margin: 0 auto; }
.timeline::before { content: ""; position: absolute; left: 210px; top: 10px; bottom: 10px; width: 1px; background: linear-gradient(to bottom, var(--teal-300), var(--line)); }
.timeline-item { display: grid; grid-template-columns: 175px 70px 1fr; align-items: start; margin-bottom: 26px; }
.timeline-year { padding-top: 31px; color: var(--navy-900); font-size: 1.1rem; font-weight: 800; text-align: right; letter-spacing: -.025em; }
.timeline-marker { display: grid; place-items: center; padding-top: 38px; }
.timeline-marker span { position: relative; z-index: 2; width: 13px; height: 13px; border-radius: 50%; background: var(--teal-500); border: 3px solid var(--paper); box-shadow: 0 0 0 1px var(--teal-300); }
.timeline-card { position: relative; padding: 28px 30px; background: var(--white); border: 1px solid rgba(17,51,77,.08); border-radius: var(--radius-md); box-shadow: 0 12px 30px rgba(12,40,58,.045); transition: transform .25s, box-shadow .25s; }
.timeline-card:hover { transform: translateX(5px); box-shadow: var(--shadow-sm); }
.timeline-card h3 { margin: 0 0 8px; color: var(--navy-900); font-size: 1.12rem; }
.timeline-card p { margin: 0; color: var(--muted); }
.timeline-index { position: absolute; right: 22px; top: 18px; color: var(--teal-100); font-size: 2rem; font-weight: 900; }

.expertise { background: var(--white); }
.expertise-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.expertise-card { position: relative; min-height: 300px; padding: 32px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--white); overflow: hidden; transition: transform .25s, box-shadow .25s, border-color .25s; }
.expertise-card::after { content: ""; position: absolute; right: -50px; bottom: -70px; width: 150px; height: 150px; border-radius: 50%; background: var(--teal-100); opacity: 0; transition: opacity .25s, transform .25s; }
.expertise-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-sm); border-color: transparent; }
.expertise-card:hover::after { opacity: .7; transform: scale(1.2); }
.icon-box { width: 54px; height: 54px; display: grid; place-items: center; margin-bottom: 44px; border-radius: 15px; color: var(--teal-600); background: var(--teal-100); }
.icon-box svg { width: 32px; height: 32px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.card-index { position: absolute; right: 28px; top: 31px; color: #a8b8c2; font-size: .72rem; font-weight: 850; letter-spacing: .14em; }
.expertise-card h3 { position: relative; z-index: 1; margin: 0 0 12px; color: var(--navy-900); font-size: 1.18rem; line-height: 1.35; }
.expertise-card p { position: relative; z-index: 1; margin: 0; color: var(--muted); font-size: .93rem; }

.research { background: #eef5f7; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 34px; }
.filter { border: 1px solid #cedce2; border-radius: 999px; padding: 10px 16px; color: var(--muted); background: rgba(255,255,255,.6); cursor: pointer; font-size: .78rem; font-weight: 750; transition: background .2s, color .2s, border-color .2s; }
.filter:hover, .filter.active { color: var(--white); border-color: var(--navy-900); background: var(--navy-900); }
.publications-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.publication-card { position: relative; display: flex; flex-direction: column; min-height: 320px; padding: 32px; background: var(--white); border: 1px solid rgba(17,51,77,.07); border-radius: var(--radius-md); box-shadow: 0 10px 28px rgba(14,48,68,.04); transition: transform .25s, box-shadow .25s; }
.publication-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-sm); }
.publication-top { display: flex; justify-content: space-between; gap: 20px; align-items: center; }
.publication-tag { display: inline-flex; padding: 6px 10px; border-radius: 999px; color: var(--teal-600); background: var(--teal-100); font-size: .68rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.publication-year { color: #91a3ae; font-size: .78rem; font-weight: 800; }
.publication-card h3 { margin: 24px 0 12px; color: var(--navy-900); font-size: 1.25rem; line-height: 1.35; letter-spacing: -.02em; }
.publication-journal { margin: 0 0 16px; color: var(--teal-600); font-size: .8rem; font-weight: 750; }
.publication-summary { margin: 0 0 25px; color: var(--muted); font-size: .92rem; }
.publication-links { display: flex; gap: 18px; margin-top: auto; padding-top: 22px; border-top: 1px solid #e5ecef; }
.publication-links a { display: inline-flex; align-items: center; gap: 7px; color: var(--navy-900); font-size: .78rem; font-weight: 800; }
.publication-links a:hover { color: var(--teal-600); }
.publication-links svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2; }
.research-footer { display: flex; justify-content: space-between; align-items: center; gap: 30px; margin-top: 45px; padding: 30px 34px; background: var(--white); border-radius: var(--radius-md); }
.research-footer p { max-width: 610px; margin: 0; color: var(--muted); }
.no-results { grid-column: 1/-1; padding: 50px; text-align: center; color: var(--muted); }

.activities { position: relative; overflow: hidden; }
.activities-pattern { position: absolute; width: 620px; height: 620px; right: -180px; bottom: -260px; border: 1px solid rgba(128,218,206,.13); border-radius: 50%; box-shadow: 0 0 0 70px rgba(128,218,206,.025), 0 0 0 140px rgba(128,218,206,.02); }
.activities-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; }
.activities-copy .lead { margin: 0 0 35px; color: rgba(255,255,255,.7); font-family: Georgia, "Times New Roman", serif; font-size: 1.45rem; line-height: 1.55; }
.activity-list { display: grid; }
.activity-list article { display: grid; grid-template-columns: 50px 1fr; gap: 20px; padding: 25px 0; border-top: 1px solid rgba(255,255,255,.1); }
.activity-list article > span { color: var(--teal-300); font-size: .72rem; font-weight: 850; }
.activity-list h3 { margin: 0 0 7px; font-size: 1.05rem; }
.activity-list p { margin: 0; color: rgba(255,255,255,.56); font-size: .9rem; }

.profiles { background: var(--white); }
.profile-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.profile-link { display: grid; grid-template-columns: 52px 1fr 24px; align-items: center; gap: 17px; padding: 22px 24px; border: 1px solid var(--line); border-radius: var(--radius-sm); transition: transform .2s, border-color .2s, background .2s; }
.profile-link:hover { transform: translateX(5px); border-color: var(--teal-300); background: #f6fbfb; }
.profile-monogram { width: 46px; height: 46px; display: grid; place-items: center; color: var(--navy-900); background: var(--teal-100); border-radius: 13px; font-size: .78rem; font-weight: 900; }
.profile-link > span:nth-child(2) { display: grid; }
.profile-link strong { color: var(--navy-900); }
.profile-link small { margin-top: 3px; color: var(--muted); font-size: .78rem; }
.profile-link > svg { width: 20px; height: 20px; fill: none; stroke: #93a5ae; stroke-width: 1.8; }

.site-footer { padding: 58px 0 34px; color: rgba(255,255,255,.65); background: #06131e; }
.footer-grid { display: grid; grid-template-columns: 1.4fr .7fr .7fr; gap: 60px; }
.footer-brand .brand-copy strong { color: var(--white); }
.footer-brand .brand-copy small { color: rgba(255,255,255,.45); }
.site-footer p { max-width: 450px; margin: 22px 0 0; font-size: .82rem; }
.footer-sources { display: grid; align-content: start; gap: 9px; }
.footer-sources strong { margin-bottom: 6px; color: var(--white); font-size: .8rem; }
.footer-sources a { font-size: .78rem; transition: color .2s; }
.footer-sources a:hover { color: var(--teal-300); }
.footer-meta { display: flex; flex-direction: column; align-items: flex-end; justify-content: space-between; gap: 40px; text-align: right; }
.back-top { display: inline-flex; align-items: center; gap: 8px; color: var(--white); font-size: .78rem; font-weight: 700; }
.back-top svg { width: 17px; height: 17px; fill: none; stroke: var(--teal-300); stroke-width: 2; }
.footer-meta small { font-size: .72rem; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; transition-delay: var(--delay, 0ms); }
.reveal.visible { opacity: 1; transform: translateY(0); }

:focus-visible { outline: 3px solid rgba(37,182,164,.45); outline-offset: 3px; }

@media (max-width: 1000px) {
  :root { --header-height: 72px; }
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .mobile-nav { position: fixed; inset: var(--header-height) 0 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 24px; background: rgba(7,23,36,.98); transform: translateY(-110%); opacity: 0; pointer-events: none; transition: transform .3s, opacity .3s; }
  .mobile-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .mobile-nav a { color: var(--white); font-size: 1.35rem; font-weight: 700; }
  .hero { min-height: auto; height: auto; padding: 145px 0 100px; }
  .hero-grid { grid-template-columns: 1fr .65fr; gap: 45px; }
  .hero h1 { font-size: clamp(3.2rem, 7.4vw, 5.5rem); }
  .hero-facts > div { padding: 0 18px; }
  .portrait-label { left: -25px; min-width: 210px; }
  .about-grid, .activities-grid { gap: 55px; }
  .expertise-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 780px) {
  .section { padding: 88px 0; }
  .hero { padding-bottom: 90px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { order: 1; }
  .hero-visual { order: 0; justify-self: center; width: min(78vw, 380px); }
  .portrait-frame img { aspect-ratio: 1; }
  .portrait-label { left: -20px; bottom: 22px; }
  .molecule-a { left: -42px; }
  .hero h1 { font-size: clamp(3.2rem, 14vw, 5.1rem); }
  .hero-lede { font-size: 1rem; }
  .hero-scroll { display: none; }
  .about-grid, .activities-grid { grid-template-columns: 1fr; }
  .about-grid .section-heading { position: static; }
  .section-heading { margin-bottom: 42px; }
  .section-heading.split { align-items: flex-start; flex-direction: column; gap: 22px; }
  .section-heading.split > p { margin-left: 76px; }
  .about-columns { grid-template-columns: 1fr; gap: 18px; }
  .timeline::before { left: 19px; }
  .timeline-item { grid-template-columns: 40px 1fr; gap: 15px; margin-bottom: 24px; }
  .timeline-year { grid-column: 2; grid-row: 1; padding: 0 0 8px; text-align: left; }
  .timeline-marker { grid-column: 1; grid-row: 1 / span 2; padding-top: 9px; }
  .timeline-card { grid-column: 2; grid-row: 2; }
  .expertise-grid, .publications-grid, .profile-links { grid-template-columns: 1fr; }
  .research-footer { align-items: flex-start; flex-direction: column; }
  .activities-grid .section-heading { margin-bottom: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-meta { grid-column: 1/-1; align-items: flex-start; flex-direction: row; text-align: left; }
}

@media (max-width: 520px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .brand-copy small { display: none; }
  .brand-mark { width: 39px; height: 39px; }
  .lang-toggle { padding: 7px 9px; }
  .hero { padding-top: 120px; }
  .hero-visual { width: min(86vw, 340px); }
  .portrait-label { left: -6px; right: -6px; min-width: 0; }
  .portrait-accent { right: -8px; }
  .hero h1 { font-size: clamp(3rem, 15vw, 4.4rem); }
  .hero-cta { align-items: stretch; flex-direction: column; }
  .hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .hero-facts > div { padding: 0 8px; }
  .hero-facts strong { font-size: 1.15rem; }
  .hero-facts span { font-size: .56rem; }
  .section-heading, .section-heading.split .heading-main { grid-template-columns: 38px 1fr; gap: 10px; }
  .section-heading.split > p { margin-left: 48px; }
  .section-heading h2 { font-size: 2.6rem; }
  .quote-block { grid-template-columns: 1fr; padding: 25px; }
  .timeline-card, .expertise-card, .publication-card { padding: 25px; }
  .filter-bar { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 6px; scrollbar-width: none; }
  .filter { min-width: max-content; }
  .research-footer { padding: 25px; }
  .profile-link { grid-template-columns: 45px 1fr 18px; padding: 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 38px; }
  .footer-meta { grid-column: auto; flex-direction: column; gap: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* RTL Overrides for Arabic */
html[dir="rtl"] { direction: rtl; }
html[dir="rtl"] .desktop-nav { margin-left: 0; margin-right: auto; }
html[dir="rtl"] .hero-facts > div { border-left: 0; border-right: 1px solid rgba(255,255,255,.13); }
html[dir="rtl"] .hero-facts > div:first-child { border-right: 0; padding-left: 32px; padding-right: 0; }
html[dir="rtl"] .portrait-label { left: auto; right: -42px; }
html[dir="rtl"] .molecule::before { transform-origin: right; left: auto; right: 18px; transform: rotate(18deg); }
html[dir="rtl"] .molecule::after { transform-origin: right; left: auto; right: 72px; transform: rotate(-48deg); }
html[dir="rtl"] .molecule i:nth-child(1) { left: auto; right: 5px; }
html[dir="rtl"] .molecule i:nth-child(2) { left: auto; right: 69px; }
html[dir="rtl"] .molecule-a { left: auto; right: -78px; }
html[dir="rtl"] .quote-block { border-left: 0; border-right: 3px solid var(--teal-500); border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
html[dir="rtl"] .timeline::before { left: auto; right: 210px; }
html[dir="rtl"] .timeline-year { text-align: left; }
html[dir="rtl"] .timeline-card:hover { transform: translateX(-5px); }
html[dir="rtl"] .timeline-index { right: auto; left: 22px; }
html[dir="rtl"] .activity-list article span { border-right: 0; border-left: 1px solid rgba(255,255,255,.12); padding-right: 0; padding-left: 20px; }

@media (max-width: 980px) {
  html[dir="rtl"] .portrait-label { right: -25px; }
  html[dir="rtl"] .timeline::before { right: 19px; }
  html[dir="rtl"] .timeline-year { text-align: right; }
}
@media (max-width: 768px) {
  html[dir="rtl"] .portrait-label { right: -20px; }
  html[dir="rtl"] .molecule-a { right: -42px; }
  html[dir="rtl"] .section-heading.split > p { margin-left: 0; margin-right: 76px; }
}
@media (max-width: 580px) {
  html[dir="rtl"] .portrait-label { right: -6px; }
  html[dir="rtl"] .section-heading.split > p { margin-right: 48px; }
}