:root {
  color-scheme: light;
  --ink: #132d3c;
  --muted: #536b79;
  --navy: #091c2b;
  --navy-2: #102c3e;
  --teal: #b2ead7;
  --teal-dark: #25695e;
  --paper: #f1f5f4;
  --line: #d5e0df;
  --white: #fff;
  font-family: "Avenir Next", Avenir, "Segoe UI", Helvetica, Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 105px; }
body { margin: 0; color: var(--ink); background: var(--white); }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
img, svg { display: block; max-width: 100%; }
::selection { color: var(--navy); background: var(--teal); }
:focus-visible { outline: 3px solid #236456; outline-offset: 5px; }
.site-header :focus-visible, .hero :focus-visible, .labs-section :focus-visible, .contact :focus-visible, .site-footer :focus-visible { outline-color: var(--teal); }
.skip-link { position: fixed; top: -5rem; inset-inline-start: 1rem; z-index: 30; padding: .8rem 1rem; background: white; color: var(--ink); }
.skip-link:focus { top: .8rem; }
.container { width: min(100% - 6rem, 1280px); margin-inline: auto; }
.section { padding-block: 7rem; }
.section-soft { background: var(--paper); }
.eyebrow { display: flex; align-items: center; gap: .8rem; margin: 0 0 1.4rem; color: var(--teal-dark); font-size: .71rem; font-weight: 750; letter-spacing: .15em; line-height: 1.65; text-transform: uppercase; }
.section-title { max-width: 800px; margin: 0; font-size: clamp(2.2rem, 4.2vw, 3.6rem); font-weight: 600; line-height: 1.16; letter-spacing: -.045em; }
.section-title em { font-style: normal; color: var(--teal); }
.section-lead { max-width: 740px; margin: 1.4rem 0 0; color: var(--muted); font-size: 1rem; line-height: 1.85; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 1.5rem; min-height: 3.4rem; padding: .95rem 1.35rem; border: 1px solid transparent; border-radius: 4px; font-size: .85rem; font-weight: 750; text-decoration: none; line-height: 1.4; transition: background .18s ease, border-color .18s ease, transform .18s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--teal); color: var(--navy); }
.button-primary:hover { background: #d0f5e6; }
.button-quiet { padding-inline: .4rem; color: white; border-bottom-color: #ffffff66; border-radius: 0; }
.button-quiet:hover { border-bottom-color: var(--teal); color: var(--teal); }
.button-dark { background: var(--navy); color: white; }
.button-dark:hover { background: #184357; }

/* A compact navigation frame keeps the aircraft and message in focus. */
.site-header { position: sticky; top: 0; z-index: 10; color: white; background: #091c2bf5; backdrop-filter: blur(16px); border-bottom: 1px solid #ffffff18; }
.header-inner { display: flex; align-items: center; gap: 2rem; min-height: 84px; }
.brand { display: inline-flex; align-items: center; flex-shrink: 0; gap: .85rem; text-decoration: none; }
.brand-mark { flex-shrink: 0; }
.brand-mark img { width: 35px; height: 41px; }
.brand-name { display: flex; flex-direction: column; font-size: .99rem; font-weight: 650; line-height: 1.2; letter-spacing: -.015em; }
.brand-name small { margin-top: .35rem; color: #9cafbc; font-size: .55rem; font-weight: 500; letter-spacing: .105em; text-transform: uppercase; }
.desktop-nav { display: flex; align-items: center; gap: 1.4rem; margin-inline-start: auto; }
.desktop-nav a { padding-block: .9rem; color: #c6d2db; font-size: .76rem; font-weight: 600; text-decoration: none; white-space: nowrap; }
.desktop-nav a:hover { color: var(--teal); }
.desktop-nav .nav-contact { padding: .65rem .9rem; border: 1px solid #9dc4c04d; border-radius: 4px; }
.language-switch { display: flex; align-items: center; gap: .6rem; padding-inline-start: 1.3rem; border-inline-start: 1px solid #ffffff26; font-size: .72rem; }
.language-switch a { padding-block: .9rem; color: #a1b3c0; text-decoration: none; }
.language-switch a[aria-current="true"] { color: var(--teal); font-weight: 800; }
.separator { color: #556f81; }
.mobile-nav { display: none; margin-inline-start: auto; }
.mobile-nav summary { cursor: pointer; list-style: none; border: 1px solid #ffffff4a; border-radius: 4px; padding: .65rem .9rem; font-size: .78rem; font-weight: 650; }
.mobile-nav summary::-webkit-details-marker { display: none; }
.mobile-panel { position: absolute; inset-inline: 0; top: 100%; display: grid; max-height: calc(100dvh - 85px); overflow-y: auto; overscroll-behavior: contain; padding: 1rem 2rem 1.5rem; background: var(--navy); box-shadow: 0 20px 30px #00131d30; }
.mobile-panel > a { padding: .85rem .25rem; border-bottom: 1px solid #ffffff1a; text-decoration: none; font-size: .95rem; }
.mobile-languages { display: flex; flex-wrap: wrap; gap: .45rem 1.7rem; margin-top: 1.1rem; }
.mobile-languages a { color: var(--teal); font-size: .9rem; padding-block: .6rem; text-underline-offset: 5px; }

/* The image is decorative atmosphere; the readable copy defines the service. */
.hero { position: relative; overflow: hidden; isolation: isolate; background: #091b2e; color: white; }
.hero-image { position: absolute; z-index: -3; width: 100%; height: 100%; object-fit: cover; object-position: center 54%; }
.hero-shade { position: absolute; inset: 0; z-index: -2; background: linear-gradient(90deg, #07192beb 0%, #081a2bb3 34%, #07192b40 61%, #07192b08 83%), linear-gradient(0deg, #081c2bef 0%, transparent 22%, transparent 90%, #081c2b30 100%); }
.hero-inner { position: relative; display: flex; align-items: center; min-height: 720px; padding-block: 6rem 8rem; }
.hero-copy-block { position: relative; width: min(62%, 780px); }
.hero h1 { margin: 0; font-size: clamp(3rem, 5.35vw, 5.15rem); font-weight: 550; line-height: 1.08; letter-spacing: -.06em; }
.hero h1 em { color: #d1eee2; font-style: normal; }
.hero-copy { max-width: 510px; margin: 1.7rem 0 0; color: #d0dae1; font-size: 1rem; font-weight: 450; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem; margin-top: 2rem; }
.hero-footnote { margin: 1.6rem 0 0; color: #b8c7d2; font-size: .73rem; line-height: 1.6; }
.hero-bottom { position: absolute; left: 0; right: 0; bottom: 2.1rem; display: flex; flex-wrap: wrap; gap: 1rem 3.3rem; padding-top: 1.3rem; border-top: 1px solid #b8d8e436; color: #c8d9e1; font-size: .64rem; font-weight: 600; letter-spacing: .13em; text-transform: uppercase; }

.recognition-strip { border-bottom: 1px solid var(--line); background: white; }
.recognition-inner { display: grid; grid-template-columns: 1fr 1fr 1.3fr .7fr; align-items: center; gap: 2.7rem; min-height: 135px; padding-block: 1.8rem; }
.recognition-inner > p { max-width: 190px; margin: 0; color: #647b88; font-size: .63rem; line-height: 1.8; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.recognition-inner > a { display: block; text-decoration: none; padding-block: .3rem; }
.recognition-inner > a > strong { display: block; color: #284050; font-size: 1.12rem; font-weight: 700; letter-spacing: -.04em; }
.recognition-inner > a > span { display: block; margin-top: .5rem; color: var(--muted); font-size: .66rem; line-height: 1.5; }
.recognition-inner > a:hover strong { color: var(--teal-dark); }
.group-name { font-size: .65rem; font-weight: 500; letter-spacing: -.01em; }
.wordmark-dot { color: var(--teal-dark); }

.service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.4rem; margin-top: 3.5rem; }
.service-card { display: flex; flex-direction: column; min-width: 0; padding-top: 1.5rem; border-top: 1px solid #9bbab3; }
.service-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.service-number { color: #4d796e; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .64rem; font-weight: 600; letter-spacing: .12em; }
.service-icon { width: 36px; height: 36px; color: var(--teal-dark); }
.service-card h3 { margin: 2.5rem 0 .85rem; font-size: 1.43rem; font-weight: 600; line-height: 1.25; letter-spacing: -.035em; }
.service-card p { margin: 0; color: var(--muted); font-size: .93rem; line-height: 1.8; }
.service-card > a { display: inline-flex; align-items: center; justify-content: space-between; gap: .8rem; padding: 1.6rem 0 .2rem; margin-top: auto; color: var(--ink); font-size: .82rem; font-weight: 700; text-decoration: none; }
.service-card > a:hover { color: var(--teal-dark); }

.labs-section { color: white; background: radial-gradient(ellipse at 90% 30%, #204553 0%, transparent 60%), var(--navy); }
.labs-layout { display: grid; grid-template-columns: 1.05fr .95fr; gap: 5.5rem; align-items: center; }
.labs-section .eyebrow { color: var(--teal); }
.labs-section .section-lead { color: #bbccd5; }
.labs-list { display: grid; gap: .9rem; margin: 2rem 0; padding: 0; list-style: none; }
.labs-list li { display: flex; align-items: baseline; gap: .8rem; color: #d0e0e6; font-size: .88rem; line-height: 1.65; }
.labs-list li::before { content: "+"; color: var(--teal); font-size: 1.1rem; }
.lab-panel { position: relative; min-width: 0; padding: 1.8rem 2rem; border: 1px solid #b7d7dc3a; border-radius: 5px; background: #0e2738b3; }
.lab-illustration { position: relative; height: 240px; margin: -1rem 0 .5rem; display: grid; place-items: center; }
.lab-orbit { position: absolute; border: 1px solid #93c6c51f; border-radius: 50%; }
.orbit-one { width: 180px; height: 180px; }
.orbit-two { width: 260px; height: 260px; border-style: dashed; }
.lab-aircraft { display: block; width: 115px; color: #b1d9dc; transform: rotate(35deg); }
.lab-point { position: absolute; padding: .3rem .6rem; border: 1px solid #648991; background: #112e40; color: #d1eae5; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .59rem; }
.point-one { left: 0; top: 33%; }
.point-two { right: 0; top: 23%; }
.point-three { right: 5%; bottom: 12%; }
.lab-top { position: relative; margin-top: 1rem; padding-top: 1.2rem; border-top: 1px solid #ffffff26; color: var(--teal); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .59rem; letter-spacing: .09em; line-height: 1.8; }
.lab-panel h3 { margin: 1.2rem 0 .7rem; font-size: 1.45rem; font-weight: 550; line-height: 1.25; letter-spacing: -.025em; }
.lab-panel p { margin: 0; color: #aec5d0; font-size: .86rem; line-height: 1.85; }
.lab-tags { display: flex; flex-wrap: wrap; gap: .55rem; margin: 1.5rem 0; }
.lab-tags span { padding: .3rem .5rem; border: 1px solid #688c944d; color: #c0dadf; font-size: .56rem; font-weight: 650; letter-spacing: .05em; }
.lab-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem; padding-top: 1rem; border-top: 1px solid #ffffff1f; color: #a6c8cf; font-size: .57rem; letter-spacing: .09em; text-transform: uppercase; }

.approach-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 0; margin-top: 3.5rem; }
.step { position: relative; border-top: 1px solid #a7c1bd; padding: 1.8rem 1.8rem 0 0; }
.step::before { content: ""; position: absolute; top: -5px; inset-inline-start: 0; width: 9px; height: 9px; border-radius: 50%; background: var(--teal-dark); box-shadow: 0 0 0 5px var(--paper); }
.step > span { color: var(--teal-dark); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .67rem; }
.step h3 { margin: 1rem 0 .7rem; font-size: 1.1rem; font-weight: 650; letter-spacing: -.03em; }
.step p { margin: 0; color: var(--muted); font-size: .87rem; line-height: 1.8; }

.about-nav { display: flex; flex-wrap: wrap; gap: 1rem 2rem; padding-bottom: 1.3rem; margin-bottom: 3.5rem; border-bottom: 1px solid var(--line); }
.about-nav a { padding-block: .4rem; color: var(--muted); font-size: .76rem; font-weight: 650; text-decoration: none; }
.about-nav a:hover { color: var(--teal-dark); }
.profile-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 5.5rem; align-items: start; }
.profile-card { border-top: 2px solid var(--teal-dark); padding: 1.8rem 1.2rem 0 0; }
.profile-label { display: flex; gap: .7rem; align-items: center; margin-bottom: 2.5rem; color: var(--teal-dark); font-size: .65rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.profile-label svg { width: 27px; height: 27px; transform: rotate(35deg); }
.profile-card > p { margin: 0 0 .8rem; max-width: 320px; color: var(--muted); font-size: .87rem; line-height: 1.8; }
.profile-card strong { display: block; color: var(--ink); font-size: clamp(2.5rem, 4vw, 3.6rem); font-weight: 600; letter-spacing: -.05em; line-height: 1.07; }
.profile-period { color: var(--teal-dark); }
.profile-location { display: block; margin: 1.8rem 0; color: var(--muted); font-size: .7rem; line-height: 1.6; }
.profile-card .profile-caption { padding-top: 1.5rem; border-top: 1px solid var(--line); font-size: .84rem; }
.profile-copy > p:not(.eyebrow) { color: var(--muted); font-size: .95rem; line-height: 1.9; }
.profile-copy > .profile-differentiator { margin: 1.6rem 0 .3rem; padding-inline-start: 1.2rem; border-inline-start: 3px solid var(--teal-dark); color: var(--ink); font-weight: 600; }
.profile-copy .button { margin-top: 1.2rem; }
.about-block { padding-top: 4rem; margin-top: 5rem; border-top: 1px solid var(--line); }
.subsection-title { max-width: 900px; margin: 0; font-size: clamp(1.8rem, 3.1vw, 2.7rem); font-weight: 600; line-height: 1.2; letter-spacing: -.04em; }
.achievement-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; margin-top: 2.5rem; }
.achievement-card { display: flex; flex-direction: column; padding-inline-end: 1rem; }
.achievement-value { color: var(--teal-dark); font-size: clamp(3.2rem, 6vw, 5rem); font-weight: 500; letter-spacing: -.07em; line-height: 1.1; }
.achievement-card h4 { margin: 1.35rem 0 .75rem; font-size: 1.04rem; font-weight: 650; line-height: 1.45; letter-spacing: -.02em; }
.achievement-card p { margin: 0 0 1.5rem; color: var(--muted); font-size: .87rem; line-height: 1.85; }
.source-link { display: inline-block; padding-block: .25rem; color: var(--teal-dark); font-size: .76rem; font-weight: 650; line-height: 1.8; text-underline-offset: 5px; }
.achievement-card > .source-link { margin-top: auto; }
.achievement-feature { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 2.15fr); gap: 2rem; align-items: start; margin-top: 2rem; padding-top: 1.7rem; border-top: 1px solid var(--line); }
.achievement-feature .achievement-value { font-size: clamp(2rem, 3vw, 2.65rem); letter-spacing: -.045em; }
.achievement-feature h4 { margin: 0 0 .55rem; font-size: 1.04rem; font-weight: 650; line-height: 1.45; letter-spacing: -.02em; }
.achievement-feature p { max-width: 750px; margin: 0; color: var(--muted); font-size: .87rem; line-height: 1.85; }
#collaborations { margin-top: 3.25rem; padding-top: 2.5rem; }
.collaboration-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; margin-top: 2.5rem; }
.collaboration-card { display: flex; flex-direction: column; padding: 2rem 0 1.5rem; border-top: 2px solid var(--ink); }
.card-kicker { color: var(--teal-dark); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .63rem; line-height: 1.8; letter-spacing: .08em; text-transform: uppercase; }
.collaboration-card > .card-kicker { margin: 0 0 1.4rem; }
.collaboration-card h4 { margin: 0 0 .7rem; color: var(--ink); font-size: clamp(1.35rem, 2.4vw, 1.9rem); font-weight: 600; line-height: 1.3; letter-spacing: -.04em; }
.collaboration-card > p:not(.card-kicker) { margin: .5rem 0 1rem; color: var(--muted); font-size: .9rem; line-height: 1.85; }
.collaboration-card .recognition-label { margin-top: auto !important; color: var(--ink) !important; font-size: .76rem !important; font-weight: 650; padding-top: .5rem; }
.card-links { display: flex; flex-wrap: wrap; gap: .6rem 1.2rem; }
.additional-contributions { margin-top: 2rem; padding-top: 1.8rem; border-top: 1px solid var(--line); }
.additional-contributions > .card-kicker { margin: 0 0 1rem; }
.additional-contributions ul { display: flex; flex-wrap: wrap; gap: .65rem; margin: 0; padding: 0; list-style: none; }
.additional-contributions li { padding: .65rem .9rem; border: 1px solid var(--line); background: #f5f8f7; color: var(--ink); font-size: .82rem; font-weight: 600; line-height: 1.4; }
.source-note { max-width: 950px; margin: 1rem 0 0; color: var(--muted); font-size: .73rem; line-height: 1.8; }
.research-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; margin-top: 2.5rem; }
.research-card { display: flex; flex-direction: column; padding: 2rem; border: 1px solid var(--line); background: linear-gradient(145deg,#f1f5f4,#fff); }
.research-card > .card-kicker { margin: 0 0 1.4rem; }
.research-card h4 { margin: 0; font-size: 1.5rem; font-weight: 600; line-height: 1.35; letter-spacing: -.03em; }
.research-card dl { margin: 1.5rem 0; }
.research-card dl > div + div { margin-top: 1.2rem; padding-top: 1.2rem; border-top: 1px solid var(--line); }
.research-card dt { margin-bottom: .5rem; font-size: .76rem; font-weight: 750; }
.research-card dd { margin: 0; color: var(--muted); font-size: .86rem; line-height: 1.9; }
.research-card > .source-link { margin-top: auto; }

.contact { position: relative; isolation: isolate; color: white; background: var(--navy); overflow: hidden; }
.contact::before { position: absolute; z-index: -2; content: ""; inset: 0; background: url('assets/aviation-hero.png') center 65% / cover; opacity: .18; }
.contact::after { position: absolute; z-index: -1; content: ""; inset: 0; background: linear-gradient(90deg,#091c2bed, #091c2b40); }
.contact-layout { display: grid; gap: clamp(2.5rem, 4vw, 4rem); }
.contact-intro { max-width: 900px; padding-top: .7rem; }
.contact .eyebrow { color: var(--teal); }
.contact .section-lead { max-width: 640px; color: #bfd0d9; }
.contact-note { max-width: 600px; margin-top: 1.4rem; color: #adc4d1; font-size: .7rem; line-height: 1.8; }
.contact-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: 1fr; gap: 1.25rem; }
.contact-option { display: flex; flex-direction: column; min-width: 0; min-height: 290px; padding: clamp(1.5rem, 2.5vw, 2.2rem); border: 1px solid #b2ead74d; background: linear-gradient(145deg, #143448eb, #0a2333ed); box-shadow: inset 0 1px #ffffff14; transition: border-color .18s ease, transform .18s ease; }
.contact-option:hover { border-color: #b2ead7b3; transform: translateY(-3px); }
.contact-option-heading { display: flex; align-items: center; gap: .9rem; }
.contact-option-icon { display: grid; place-items: center; flex: 0 0 2.75rem; width: 2.75rem; height: 2.75rem; border: 1px solid #b2ead780; border-radius: 4px; color: var(--teal); font: 750 .95rem/1 "Avenir Next", Avenir, Arial, sans-serif; }
.contact-option-heading h3 { margin: 0; color: #effbf7; font-size: 1.4rem; font-weight: 650; line-height: 1.35; letter-spacing: -.025em; }
.contact-option-copy { max-width: 48ch; margin: 1.5rem 0 0; color: #c6d9df; font-size: .9rem; line-height: 1.8; }
.contact-option-detail { margin: 1rem 0 1.5rem; color: #f4fffb; font-size: clamp(.82rem, 1.3vw, 1rem); font-weight: 650; line-height: 1.6; overflow-wrap: anywhere; }
.contact-option-action { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: auto; padding-top: 1rem; border-top: 1px solid #b2ead74d; color: var(--teal); font-size: .86rem; font-weight: 750; line-height: 1.5; text-decoration: none; }
.contact-option-action:hover { color: #e4fff4; }
.site-footer { padding-block: 2rem; color: #a8bdca; background: #081825; border-top: 1px solid #ffffff1a; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 1rem; font-size: .69rem; line-height: 1.8; }
.footer-inner p { margin: 0; }
.footer-inner a { display: inline-block; padding: .4rem; color: #dce9ee; text-underline-offset: 4px; }

@media (min-width: 1600px) {
  .hero-inner { min-height: 780px; }
}
@media (max-width: 1200px) {
  .container { width: min(100% - 4rem, 1280px); }
  .header-inner { gap: 1rem; }
  .desktop-nav { gap: 1rem; }
  .desktop-nav a { font-size: .71rem; }
  .brand-name small { font-size: .49rem; }
  .hero-inner { min-height: 675px; }
  .hero-copy-block { width: 64%; }
  .hero h1 { font-size: 4rem; }
  .labs-layout, .profile-layout { gap: 3rem; }
  .recognition-inner { gap: 1.5rem; }
}
@media (max-width: 1100px) {
  .desktop-nav, .header-inner > .language-switch { display: none; }
  .mobile-nav { display: block; }
  .brand-name small { font-size: .55rem; }
  .hero-copy-block { width: 67%; }
  .hero h1 { font-size: clamp(3rem, 6.1vw, 4rem); }
}
@media (max-width: 900px) {
  .hero-inner { min-height: 640px; padding-block: 4.5rem 7rem; }
  .hero-copy-block { width: 76%; }
  .hero-shade { background: linear-gradient(90deg,#07192bf5,#081a2bb3 48%,#07192b14),linear-gradient(0deg,#081c2bef,transparent 35%); }
  .hero-copy { max-width: 430px; }
  .recognition-inner { grid-template-columns: 1fr 1fr; gap: 1.8rem 2.5rem; padding-block: 2rem; }
  .recognition-inner > p { max-width: 220px; }
  .section { padding-block: 5rem; }
  .labs-layout { grid-template-columns: 1fr; gap: 3.2rem; }
  .lab-panel { max-width: 540px; width: 100%; margin-inline: auto; }
  .service-grid { gap: 1.5rem; }
  .service-card h3 { font-size: 1.25rem; }
  .profile-layout { grid-template-columns: 1fr 1.6fr; gap: 2.3rem; }
  .achievement-grid { gap: 1.5rem; }
  .achievement-feature { grid-template-columns: minmax(0, .7fr) minmax(0, 2.3fr); gap: 1.5rem; }
  .approach-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem 0; }
  .collaboration-grid, .research-grid { gap: 1.5rem; }
  .research-card { padding: 1.5rem; }
}
@media (max-width: 650px) {
  html { scroll-padding-top: 85px; }
  .container { width: calc(100% - 2.5rem); }
  .header-inner { min-height: 72px; }
  .brand-name { font-size: .9rem; }
  .brand-name small { font-size: .45rem; max-width: 190px; letter-spacing: .06em; }
  .brand-mark img { width: 29px; height: 34px; }
  .brand { gap: .65rem; }
  .mobile-nav summary { padding: .6rem .75rem; }
  .mobile-panel { max-height: calc(100dvh - 73px); }
  .hero-image { height: 310px; top: 0; object-position: 67% 52%; }
  .hero-shade { background: linear-gradient(0deg,#091b2e 0%,#091b2e 56%,#091b2e88 75%,#091b2e00 92%); }
  .hero-inner { display: block; min-height: auto; padding-block: 225px 2.8rem; }
  .hero-copy-block { width: 100%; }
  .hero h1 { font-size: clamp(2.5rem, 8.6vw, 3.5rem); line-height: 1.1; }
  .hero-copy { margin-top: 1.2rem; max-width: 100%; font-size: .92rem; line-height: 1.75; color: #c7d6df; }
  .hero-actions { gap: 1rem; margin-top: 1.5rem; }
  .hero-actions .button { min-height: 3.1rem; font-size: .8rem; }
  .hero-footnote { font-size: .64rem; margin-top: 1.3rem; }
  .hero-bottom { display: none; }
  .recognition-inner { gap: 1.4rem 1.1rem; }
  .recognition-inner > p { max-width: 180px; font-size: .57rem; }
  .recognition-inner > a > strong { font-size: 1rem; }
  .recognition-inner > a > span { font-size: .58rem; }
  .group-name { display: block; margin-top: .15rem; font-size: .53rem; }
  .section { padding-block: 4rem; }
  .eyebrow { margin-bottom: 1rem; font-size: .61rem; }
  .section-title { font-size: clamp(2rem, 7.8vw, 2.8rem); }
  .section-lead { font-size: .92rem; line-height: 1.8; }
  .service-grid, .achievement-grid, .collaboration-grid, .research-grid, .profile-layout { grid-template-columns: 1fr; }
  .service-grid { margin-top: 2.5rem; gap: 2.5rem; }
  .service-card h3 { margin-top: 1.5rem; font-size: 1.4rem; }
  .service-card p { font-size: .91rem; }
  .service-card > a { padding-top: 1.2rem; }
  .lab-panel { padding: 1.5rem; }
  .lab-illustration { height: 220px; }
  .orbit-two { width: 230px; height: 230px; }
  .lab-aircraft { width: 100px; }
  .lab-panel h3 { font-size: 1.3rem; }
  .approach-grid { margin-top: 2.5rem; gap: 2.5rem 1rem; }
  .step { padding-inline-end: .5rem; }
  .step h3 { font-size: 1rem; }
  .step p { font-size: .81rem; }
  .about-nav { gap: .5rem 1.1rem; margin-bottom: 2.4rem; }
  .about-nav a { font-size: .68rem; }
  .profile-card { padding-inline-end: 0; }
  .profile-label { margin-bottom: 1.6rem; }
  .profile-card strong { font-size: 3rem; }
  .profile-copy .section-title { font-size: 2.25rem; }
  .about-block { margin-top: 3rem; padding-top: 3rem; }
  .achievement-grid { gap: 2rem; }
  .achievement-card { padding-bottom: 1.8rem; border-bottom: 1px solid var(--line); }
  .achievement-card:last-child { border-bottom: 0; padding-bottom: 0; }
  .achievement-value { font-size: 3.6rem; }
  .achievement-card h4 { margin-top: 1rem; }
  .achievement-feature { grid-template-columns: 1fr; gap: .55rem; margin-top: 1.7rem; padding-top: 1.6rem; }
  .achievement-feature .achievement-value { font-size: 2.35rem; }
  #collaborations { margin-top: 2.75rem; padding-top: 2.5rem; }
  .collaboration-grid { gap: 1.6rem; }
  .collaboration-card h4 { font-size: 1.6rem; }
  .research-card { padding: 1.4rem; }
  .research-card h4 { font-size: 1.4rem; }
  .source-link { font-size: .76rem; }
  .contact-layout { gap: 1.7rem; }
  .contact-options { grid-template-columns: 1fr; gap: .9rem; }
  .contact-option { min-height: 290px; }
  .footer-inner { flex-direction: column; align-items: start; font-size: .64rem; }
}
@media (max-width: 380px) {
  .brand-name small { display: none; }
  .hero h1 { font-size: 2.4rem; }
  .hero-actions { align-items: stretch; flex-direction: column; gap: .6rem; }
  .hero-actions .button-quiet { align-self: start; }
  .lab-bottom { font-size: .5rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

/* Arabic uses the same structure with text, navigation and imagery flowing RTL. */
html[lang="ar"] { font-family: "Noto Sans Arabic", "Geeza Pro", Tahoma, Arial, sans-serif; }
html[lang="ar"] .hero-image, html[lang="ar"] .hero-shade,
html[lang="ar"] .contact::before, html[lang="ar"] .contact::after { transform: scaleX(-1); }
html[lang="ar"] .hero h1 { font-size: clamp(2.7rem, 5vw, 4.8rem); line-height: 1.27; letter-spacing: 0; }
html[lang="ar"] .section-title { line-height: 1.36; letter-spacing: 0; }
html[lang="ar"] .subsection-title, html[lang="ar"] h3, html[lang="ar"] h4,
html[lang="ar"] .brand-name { letter-spacing: 0; }
html[lang="ar"] .eyebrow, html[lang="ar"] .card-kicker,
html[lang="ar"] .hero-bottom,
html[lang="ar"] .lab-top, html[lang="ar"] .lab-tags, html[lang="ar"] .lab-bottom { letter-spacing: 0; text-transform: none; }
html[lang="ar"] .brand-name small { letter-spacing: 0; }
html[lang="ar"] .achievement-feature .achievement-value { letter-spacing: 0; }
html[lang="ar"] .recognition-inner strong, html[lang="ar"] .additional-contributions li,
html[lang="ar"] .collaboration-card h4, html[lang="ar"] .profile-card strong { direction: ltr; text-align: right; }
@media (max-width: 650px) {
  html[lang="ar"] .hero h1 { font-size: clamp(2.45rem, 8vw, 3.3rem); line-height: 1.3; }
  html[lang="ar"] .hero-image { object-position: 67% 52%; }
}