:root {
  --black: #050506;
  --dark: #111111;
  --mid: #1f1f1f;
  --card-on-dark: #1a1a1a;
  --line: #2c2c2c;
  --heading: #999999;
  --hero-ink: #adadad;
  --text: #a6a6a6;
  --muted: #8c8c8c;
  --white: #ffffff;
  --green: #678e1d;
  --green-dark: #557617;
  --green-text: #86b02f;
  --strip: #63852a;
  --orange: #e67e22;
  --red: #c0392b;
  --blue: #2980b9;
  --shadow: 0 2px 20px 0 rgba(110, 130, 208, .11);
  --maxw: 1170px;
  --header-h: 71px;
  --font: "Josefin Sans", "Century Gothic", "Futura", "Avenir Next", "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 4px); }
body {
  margin: 0;
  overflow-x: clip;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: .8px;
  color: var(--text);
  background: var(--mid);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--green-text); text-decoration: none; transition: color .25s ease, background-color .25s ease, border-color .25s ease; }
a:hover { color: #a3cf45; }
:focus-visible { outline: 2px solid var(--green-text); outline-offset: 3px; }
h1, h2, h3 { margin: 0 0 .5em; line-height: 1.25; color: var(--heading); font-weight: 700; }
h3 { font-size: 19px; letter-spacing: .8px; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.2em; }
li { margin-bottom: .4em; }
strong { color: #c4c4c4; font-weight: 700; }
em { color: #bdbdbd; }
img { max-width: 100%; height: auto; display: block; }

.container { width: min(100% - 40px, var(--maxw)); margin-inline: auto; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: 12px; top: -60px; z-index: 200; padding: 10px 16px; background: var(--green); color: #fff; }
.skip-link:focus { top: 12px; }

.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--header-h);
  background: var(--dark);
  transition: transform .35s ease, opacity .35s ease;
}
.js .site-header { transform: translateY(-100%); opacity: 0; }
.js .site-header.visible { transform: none; opacity: 1; }
.nav { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { display: flex; flex-direction: column; line-height: 1; color: var(--green-text); }
.logo-name { font-size: 30px; font-weight: 700; letter-spacing: .5px; color: var(--green-text); }
.logo-tag { margin-top: 6px; padding-left: 38px; font-size: 11px; font-weight: 600; letter-spacing: 1px; color: #a8a8a8; }
.logo:hover .logo-name { color: #a3cf45; }
.nav-links { display: flex; list-style: none; margin: 0; padding: 0; gap: 0; }
.nav-links li { margin: 0; }
.nav-links a { display: block; padding: 12px 0 12px 22px; font-size: 14px; letter-spacing: .8px; color: var(--heading); }
.nav-links a:hover, .nav-links a[aria-current="true"] { color: var(--green-text); }
.menu-btn { display: none; width: 44px; height: 44px; border: 1px solid #333; border-radius: 4px; background: transparent; cursor: pointer; position: relative; }
.menu-bars, .menu-bars::before, .menu-bars::after { position: absolute; left: 11px; width: 20px; height: 2px; background: var(--heading); content: ""; transition: transform .25s ease, opacity .25s ease; }
.menu-bars { top: 21px; }
.menu-bars::before { left: 0; top: -6px; }
.menu-bars::after { left: 0; top: 6px; }
.menu-btn[aria-expanded="true"] .menu-bars { background: transparent; }
.menu-btn[aria-expanded="true"] .menu-bars::before { transform: translateY(6px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .menu-bars::after { transform: translateY(-6px) rotate(-45deg); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 55px; padding: 15px 33px;
  font-family: var(--font); font-size: 11px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; line-height: 1;
  border: 1px solid var(--green); border-radius: 4px; cursor: pointer;
  transition: background-color .3s ease, color .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.btn-outline { color: var(--green-text); background: transparent; }
.btn-outline:hover { color: #fff; background: var(--green); }
.btn-solid { color: #fff; background: var(--green); }
.btn-solid:hover { color: #fff; background: var(--green-dark); border-color: var(--green-dark); box-shadow: 0 8px 20px -10px rgba(103, 142, 29, .8); }
.btn-icon svg { width: 15px; height: 15px; }

.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: clamp(620px, 100vh, 960px); min-height: clamp(620px, 100svh, 960px);
  display: flex; align-items: center;
  background: var(--black);
}
.hero-photo { position: absolute; inset: 9% 5% 9% auto; width: 44%; z-index: -1; }
.hero-photo img {
  width: 100%; height: 100%; object-fit: cover; object-position: 50% 18%;
  filter: grayscale(.3) brightness(.5) contrast(1.18);
}
.hero-photo::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, var(--black) 0%, rgba(5,5,6,.92) 12%, rgba(5,5,6,.6) 30%, rgba(5,5,6,.15) 55%, rgba(5,5,6,0) 75%),
    linear-gradient(0deg, var(--black) 0%, rgba(5,5,6,.55) 22%, rgba(5,5,6,0) 50%),
    linear-gradient(180deg, var(--black) 0%, rgba(5,5,6,.5) 10%, rgba(5,5,6,0) 25%),
    linear-gradient(270deg, var(--black) 0%, rgba(5,5,6,.4) 10%, rgba(5,5,6,0) 22%);
}
.hero-inner { position: relative; padding-block: 110px 120px; }
.hero h1 { margin: 0 0 22px; font-size: clamp(44px, 6vw, 65px); font-weight: 600; letter-spacing: .6px; line-height: 1.1; color: var(--hero-ink); }
.dare { display: flex; flex-direction: column; align-items: flex-start; margin: 0 0 26px; }
.dare-word { font-size: 25px; line-height: 1.35; font-weight: 400; letter-spacing: 1.4px; color: #b2b2b2; animation: dare-in .6s cubic-bezier(.2,.7,.3,1) both; }
.dare-word b { font-weight: 700; color: var(--green-text); }
.dare-word:nth-child(1) { animation-delay: .3s; }
.dare-word:nth-child(2) { animation-delay: .8s; }
.dare-word:nth-child(3) { animation-delay: 1.3s; }
.dare-word:nth-child(4) { animation-delay: 1.8s; }
.dare-motto {
  display: inline-flex; align-items: center; gap: 12px; margin-top: 14px;
  font-size: 12px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase; color: var(--green-text);
  animation: dare-in .7s cubic-bezier(.2,.7,.3,1) 2.4s both;
}
.dare-motto::before { content: ""; width: 34px; height: 1px; background: var(--green); }
@keyframes dare-in { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.hero-tagline { max-width: 470px; margin: 0 0 34px; font-size: 15px; line-height: 1.8; color: #9a9a9a; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 18px 28px; margin-bottom: 30px; }
.social { display: flex; gap: 12px; list-style: none; margin: 0; padding: 0; }
.social li { margin: 0; }
.social a { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid #3a3a3a; border-radius: 4px; color: var(--heading); }
.social a:hover { color: #fff; background: var(--green); border-color: var(--green); }
.social svg { width: 16px; height: 16px; }
.arrow-down { position: absolute; left: 50%; bottom: 46px; width: 44px; height: 44px; margin-left: -22px; }
.arrow-down::before {
  content: ""; position: absolute; left: 14px; top: 8px; width: 16px; height: 16px;
  border-right: 2px solid #cfcfcf; border-bottom: 2px solid #cfcfcf; transform: rotate(45deg);
  animation: bob 2s ease-in-out infinite;
}
.arrow-down:hover::before { border-color: var(--green-text); }
@keyframes bob { 0%, 100% { translate: 0 0; } 50% { translate: 0 8px; } }

.section { padding: 100px 0; }
.sec-mid { background: var(--mid); }
.sec-dark { background: var(--dark); }
.section-head { text-align: center; margin-bottom: 56px; }
.main-heading { margin: 0 0 12px; font-size: 36px; font-weight: 700; letter-spacing: .4px; color: var(--heading); }
.sub-heading { margin: 0; font-size: 16px; letter-spacing: .8px; color: var(--heading); }
.sub-title { margin: 56px 0 26px; font-size: 24px; text-align: center; color: var(--heading); }

.panel { background: var(--dark); box-shadow: var(--shadow); padding: 40px 44px; }
.sec-dark .panel { background: var(--card-on-dark); }
.about-panel { margin: 0 0 30px; }
.about-panel p:last-child { margin-bottom: 0; }
.lead { font-size: 17px; color: #bcbcbc; }

.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px 3.5%; list-style: none; margin: 0; padding: 0; }
.service {
  margin: 0; padding: 20px 20px 40px; text-align: center;
  background: var(--dark); box-shadow: var(--shadow);
  border-top: 3px solid transparent;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.sec-dark .service { background: var(--card-on-dark); }
.service:hover { transform: translateY(-6px); border-top-color: var(--green); box-shadow: 0 14px 30px -12px rgba(0,0,0,.8), var(--shadow); }
.service-icon { display: block; width: 55px; height: 55px; margin: 12px auto 22px; color: var(--green); }
.service-icon svg { width: 100%; height: 100%; }
.service-title { margin: 0 0 10px; font-size: 20px; line-height: 28px; font-weight: 700; letter-spacing: .8px; color: var(--heading); }
.service-text { margin: 0; font-size: 14px; line-height: 1.8; }
.facts .service { padding-bottom: 32px; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 18px 0 0; padding: 0; }
.tags-center { justify-content: center; }
.tags li {
  margin: 0; padding: 7px 11px 5px; border: 1px solid #555; border-radius: 3px;
  font-size: 10.5px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; line-height: 1.3; color: var(--heading);
  transition: color .25s ease, border-color .25s ease;
}
.tags li:hover { color: var(--green-text); border-color: var(--green); }

.ribbon {
  padding: 110px 0; text-align: center;
  background:
    radial-gradient(ellipse at 50% 120%, rgba(103,142,29,.10), transparent 60%),
    #0a0a0a;
}
.ribbon-text { max-width: 640px; margin: 0 auto 28px; font-size: 24px; line-height: 1.5; font-weight: 700; letter-spacing: 1px; color: var(--heading); }
.ribbon .btn { min-height: 46px; padding: 14px 26px; }

.timeline { position: relative; list-style: none; margin: 0 0 30px; padding: 0 0 0 46px; }
.timeline::before { content: ""; position: absolute; left: 12px; top: 10px; bottom: 10px; width: 2px; background: linear-gradient(var(--green), rgba(103,142,29,.15)); }
.tl-item { position: relative; margin: 0 0 30px; }
.tl-item::before { content: ""; position: absolute; left: -41px; top: 34px; width: 14px; height: 14px; border-radius: 50%; background: var(--dark); border: 3px solid var(--green); }
.job {
  background: var(--card-on-dark); box-shadow: var(--shadow); padding: 30px 34px;
  border-left: 3px solid transparent;
  transition: border-color .3s ease, transform .3s ease;
}
.job:hover { border-left-color: var(--green); transform: translateX(4px); }
.job-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; margin-bottom: 14px; }
.job-head h3 { margin: 0 0 4px; font-size: 20px; }
.org { margin: 0; color: var(--green-text); font-size: 14px; }
.dates {
  flex: none; margin: 0; padding: 7px 12px 5px; border: 1px solid #555; border-radius: 3px;
  font-size: 10.5px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; line-height: 1.3; color: var(--heading);
}
.job ul:not(.tags) { margin: 0; padding-left: 1.1em; }
.job ul:not(.tags) li::marker { color: var(--green); }
.job-summary { color: #b5b5b5; }
.job-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.job-compact:hover { transform: translateY(-4px); }

.feature .eyebrow { margin: 0 0 8px; font-size: 12px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--green-text); }
.feature h3 { font-size: 24px; color: #b5b5b5; }
.checklist { list-style: none; padding: 0; margin: 18px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 30px; }
.checklist li { position: relative; margin: 0; padding-left: 26px; }
.checklist li::before { content: ""; position: absolute; left: 2px; top: 6px; width: 7px; height: 12px; border-right: 2px solid var(--green-text); border-bottom: 2px solid var(--green-text); transform: rotate(45deg); }

.pubs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; list-style: none; margin: 0; padding: 0; }
.pub { margin: 0; display: flex; flex-direction: column; background: var(--dark); box-shadow: var(--shadow); transition: transform .3s ease, box-shadow .3s ease; }
.pub:hover { transform: translateY(-6px); box-shadow: 0 16px 30px -14px rgba(0,0,0,.9), var(--shadow); }
.pub-bar { margin: 0; padding: 13px 22px 10px; font-size: 13px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: #fff; text-align: center; }
.pub-1 .pub-bar { background: var(--orange); }
.pub-2 .pub-bar { background: var(--red); }
.pub-3 .pub-bar { background: var(--blue); }
.pub-4 .pub-bar { background: var(--green); }
.pub-body { padding: 24px 26px 18px; flex: 1; }
.pub-title { font-size: 17px; line-height: 1.5; font-weight: 700; margin-bottom: 10px; }
.pub-title a { color: #c2c2c2; }
.pub-title a:hover { color: var(--green-text); }
.pub-meta { font-size: 14px; margin-bottom: 8px; }
.pub-doi { font-size: 13px; margin: 0; color: var(--muted); }
.badge { display: inline-block; margin-left: 6px; padding: 4px 8px 2px; border-radius: 3px; background: var(--green); color: #fff; font-size: 10px; letter-spacing: 1px; text-transform: uppercase; vertical-align: middle; }
.talks { margin-top: 30px; }
.talks .sub-title { margin-top: 0; text-align: left; font-size: 20px; }
.talks ul { margin: 0; padding-left: 1.1em; }
.talks li::marker { color: var(--green); }

.edu-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px 3.5%; list-style: none; margin: 0; padding: 0; }
.edu { position: relative; margin: 0; padding: 0 0 44px; }
.edu-frame {
  height: 100%; margin-right: 9%;
  padding: 28px 24px 44px; background: var(--dark);
  border: 10px solid var(--c); box-shadow: var(--shadow);
  transition: border-color .3s ease;
}
.edu-frame h3 { font-size: 19px; color: #c2c2c2; }
.edu-frame .org { margin-bottom: 12px; }
.edu-frame p:last-child { margin-bottom: 0; font-size: 14px; }
.edu-tag {
  position: absolute; right: 0; bottom: 0; margin: 0; min-width: 104px; padding: 16px 18px 12px;
  background: var(--c); color: #fff; text-align: center;
  box-shadow: 0 0 10px -10px #000;
  transition: transform .3s ease, box-shadow .3s ease;
}
.edu-year { font-size: 22px; font-weight: 700; letter-spacing: 1px; }
.edu:hover .edu-tag { transform: translateY(-8px); box-shadow: 0 15px 15px -15px #000; }
.edu:hover .edu-frame { border-color: var(--c-dark); }
.edu-1 { --c: var(--orange); --c-dark: #c76d1d; }
.edu-2 { --c: var(--red); --c-dark: #9e2d21; }
.edu-3 { --c: var(--blue); --c-dark: #1b6798; }

.letter { padding: 70px 0; text-align: center; background: #000; }
.letter h2 { margin: 0 0 30px; font-size: 26px; letter-spacing: 1.5px; color: #fff; }
.letter .btn { min-height: 46px; padding: 14px 28px; border-color: #8fb23f; }

.contact-strip { padding: 90px 0; background: var(--strip); }
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; list-style: none; margin-block: 0; padding: 0; text-align: center; }
.contact-grid li { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 14px; font-size: 14px; letter-spacing: 1.5px; color: #fff; overflow-wrap: anywhere; }
.contact-grid a { color: #fff; }
.contact-grid a:hover { color: #111; }
.contact-icon { display: grid; place-items: center; width: 54px; height: 54px; border: 1px solid rgba(255,255,255,.55); border-radius: 50%; color: #fff; transition: background-color .3s ease, color .3s ease; }
.contact-grid li:hover .contact-icon { background: #fff; color: var(--strip); }
.contact-icon svg { width: 22px; height: 22px; }

.site-footer { background: var(--mid); }
.arrow-up { margin: 0; padding-top: 40px; text-align: center; }
.arrow-up a { position: relative; display: inline-block; width: 60px; height: 40px; }
.arrow-up a::before { content: ""; position: absolute; left: 17px; top: 14px; width: 25px; height: 25px; border-top: 2px solid #0a0a0a; border-left: 2px solid #0a0a0a; transform: rotate(45deg); transition: border-color .5s ease; }
.arrow-up a:hover::before { border-color: var(--green-text); }
.footer-title { margin: 4px 0 50px; text-align: center; font-size: 24px; letter-spacing: 2px; color: #8a8a8a; }
.widgets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; padding-bottom: 40px; }
.widget { padding: 15px; background: var(--dark); box-shadow: 0 4px 12px rgba(0,0,0,.45); font-size: 14px; }
.widget-title { margin: 0 0 20px; padding: 12px 10px 9px; background: var(--mid); font-size: 14px; letter-spacing: 1.5px; color: #a8a8a8; border-bottom: 1px solid var(--green); }
.widget p { margin: 0 0 .6em; padding-inline: 4px; }
.widget ul { list-style: none; margin: 0; padding: 0 4px; }
.widget li { margin: 0 0 .5em; }
.widget a { color: #8f8f8f; }
.widget a:hover { color: var(--green-text); }
.copyright { background: var(--dark); text-align: center; }
.copyright p { margin: 0; padding: 20px; font-size: 15px; color: var(--heading); }

@media (max-width: 1000px) {
  .menu-btn { display: block; }
  .nav-links {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; padding: 8px 20px 16px; background: var(--dark);
    border-top: 1px solid #222; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 11px 0; border-bottom: 1px solid #1d1d1d; }
  .service-grid, .edu-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-photo { width: 70%; }
}
@media (max-width: 720px) {
  body { font-size: 14.5px; }
  .section { padding: 72px 0; }
  .main-heading { font-size: 30px; }
  .section-head { margin-bottom: 40px; }
  .logo-name { font-size: 24px; }
  .logo-tag { padding-left: 0; font-size: 9.5px; }
  .hero { align-items: flex-end; }
  .hero-photo { inset: 0 0 auto 0; width: 100%; height: 330px; }
  .hero-photo img { object-position: 50% 12%; filter: grayscale(.3) brightness(.62) contrast(1.15); }
  .hero-photo::after {
    background:
      linear-gradient(0deg, var(--black) 0%, rgba(5,5,6,.75) 22%, rgba(5,5,6,0) 60%),
      linear-gradient(90deg, rgba(5,5,6,.55) 0%, rgba(5,5,6,0) 45%);
  }
  .hero-inner { padding-block: 250px 90px; }
  .dare-word { font-size: 21px; }
  .hero-actions { gap: 14px; }
  .hero-actions .btn { min-height: 48px; padding: 14px 24px; }
  .arrow-down { bottom: 18px; }
  .panel { padding: 26px 22px; }
  .service-grid, .edu-grid, .pubs, .job-grid, .widgets, .checklist { grid-template-columns: 1fr; }
  .timeline { padding-left: 28px; }
  .timeline::before { left: 5px; }
  .tl-item::before { left: -29px; top: 30px; width: 12px; height: 12px; }
  .job { padding: 24px 20px; }
  .job-head { flex-direction: column; gap: 10px; }
  .ribbon { padding: 80px 0; }
  .ribbon-text { font-size: 20px; }
  .contact-grid { grid-template-columns: 1fr; gap: 34px; }
  .contact-strip { padding: 64px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .dare-word, .dare-motto { opacity: 1; transform: none; }
}