:root {
  --green:#1e5a31;
  --ink:#183d2a;
  --muted:#42554a;
  --lime:#bfdf4c;
  --line:#dce5db;
  --cream:#fafbf7;
  --mint:#eef4e9;
}

* {
  box-sizing:border-box;
}

html {
  scroll-behavior:smooth;
  scroll-padding-top:28px;
}

body {
  margin:0;
  background:var(--cream);
  color:var(--ink);
  font-family:Arial,Helvetica,sans-serif;
  -webkit-font-smoothing:antialiased;
}

a {
  color:inherit;
  text-decoration:none;
}

a:focus-visible {
  outline:3px solid #739d21;
  outline-offset:6px;
}

a:hover {
  color:#337541;
}

img {
  max-width:100%;
  height:auto;
}

p {
  line-height:1.7;
}

h1,h2,h3,p {
  margin-top:0;
}

h1,h2,h3 {
  font-weight:500;
}

header,main,footer {
  max-width:1440px;
  margin:auto;
}

.header {
  padding:30px 6%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid var(--line);
  gap:28px;
}

.brand {
  width:280px;
  flex-shrink:0;
  display:block;
}

.brand img {
  width:100%;
  display:block;
}

nav {
  display:flex;
  gap:35px;
  align-items:center;
  font-size:16px;
  font-weight:600;
}

nav a {
  padding:12px 0;
  text-decoration-color:var(--lime);
  text-decoration-thickness:3px;
  text-underline-offset:7px;
}

nav a:hover, nav a:focus-visible {
  text-decoration-line:underline;
}

.skip-link {
  position:fixed;
  top:-100px;
  left:20px;
  padding:15px;
  background:var(--green);
  color:white;
  z-index:5;
}

.skip-link:focus {
  top:12px;
}

.hero {
  padding:32px 6%;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:80px;
  align-items:stretch;
}

.eyebrow {
  font-size:10px;
  letter-spacing:1.65px;
  font-weight:700;
  display:flex;
  align-items:center;
  gap:9px;
  margin-bottom:28px;
}

.status-dot {
  height:7px;
  width:7px;
  border-radius:50%;
  background:#699c40;
  display:inline-block;
  flex-shrink:0;
}

h1 {
  font-size:clamp(46px,4.6vw,67px);
  line-height:1.07;
  letter-spacing:-2.8px;
  margin-bottom:26px;
}

h1 span,h2 span {
  color:#496b35;
}

.hero-description {
  font-size:18px;
  max-width:485px;
  color:var(--muted);
  margin-bottom:30px;
}

.actions {
  display:flex;
  gap:22px;
  align-items:center;
  flex-wrap:wrap;
}

.button {
  display:inline-flex;
  justify-content:space-between;
  align-items:center;
  gap:23px;
  padding:16px 21px;
  border-radius:5px;
  font-size:14px;
  font-weight:600;
  transition:background .2s,transform .2s;
}

.button:hover {
  transform:translateY(-2px);
}

.primary {
  color:white;
  background:var(--green);
}

.primary:hover {
  color:white;
  background:#2c7141;
}

.text-link {
  font-size:14px;
  font-weight:600;
}

.text-link span {
  margin-left:8px;
}

.hero-tags {
  display:flex;
  gap:20px;
  margin-top:28px;
  color:var(--muted);
  font-size:12px;
}

.hero-tags span:before {
  content:'✓';
  color:var(--green);
  margin-right:6px;
}

.ecosystem {
  position:relative;
  min-width:0;
  height:560px;
  background:#edf3e6;
  border-radius:10px;
  overflow:hidden;
  border:1px solid #e4eadc;
  background-image:radial-gradient(#c8d7bf .7px,transparent .7px);
  background-size:18px 18px;
}

.diagram-heading {
  position:absolute;
  top:23px;
  left:24px;
  right:24px;
  display:flex;
  justify-content:space-between;
  font-size:12px;
  line-height:1.4;
  letter-spacing:1px;
  font-weight:700;
  z-index:2;
}

.orbit {
  position:absolute;
  border:1px solid #d6e2ca;
  border-radius:50%;
  left:50%;
  top:56%;
  transform:translate(-50%,-50%);
}

.orbit-one {
  width:260px;
  height:260px;
}

.orbit-two {
  width:415px;
  height:415px;
}

.connections {
  position:absolute;
  width:100%;
  height:100%;
  inset:0;
}

.connections path {
  fill:none;
  stroke:#a5bc8d;
  stroke-width:1.2;
  stroke-dasharray:4 5;
}

.hub {
  position:absolute;
  left:50%;
  top:56%;
  transform:translate(-50%,-50%);
  width:174px;
  height:174px;
  border-radius:50%;
  background:var(--cream);
  box-shadow:0 10px 35px #284d2312;
  border:1px solid #d9e3cc;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  z-index:1;
}

.hub img {
  width:67px;
  margin-bottom:7px;
  --float-radius:3px;
  animation:continuous-orbit 18s linear infinite;
}

.hub strong {
  font-size:20px;
  font-weight:500;
  letter-spacing:-.5px;
}

.hub>span {
  font-size:9px;
  color:var(--muted);
  margin-top:5px;
}

.satellite {
  position:absolute;
  max-width:calc(100% - 32px);
  --float-radius:5px;
  animation:continuous-orbit 10s linear infinite;
  display:flex;
  gap:11px;
  align-items:center;
  background:#fff;
  padding:15px;
  border:1px solid #dce6d3;
  border-radius:7px;
  box-shadow:0 7px 16px #284d2306;
  z-index:2;
}

.satellite strong {
  display:block;
  font-size:11px;
  margin-bottom:6px;
}

.satellite div>span {
  font-size:8px;
  color:var(--muted);
  display:block;
}

.node-icon {
  font-size:21px;
  color:#57743e;
  background:#f0f5e8;
  width:34px;
  height:34px;
  display:grid;
  place-items:center;
  border-radius:5px;
}

.schema {
  top:64px;
  left:6%;
}

.crate {
  top:144px;
  right:6%;
  animation-delay:-3.3s;
}

.search {
  bottom:62px;
  left:50%;
  translate:-50% 0;
  animation-delay:-6.6s;
}

.diagram-footer {
  position:absolute;
  bottom:21px;
  left:24px;
  display:flex;
  align-items:center;
  gap:8px;
  font-size:8px;
  letter-spacing:1.4px;
}

.section {
  padding:48px 6%;
  scroll-margin-top:15px;
}

h2 {
  font-size:38px;
  line-height:1.16;
  letter-spacing:-1.4px;
  margin-bottom:0;
}

.about {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:80px;
}

.about-copy {
  min-width:0;
  padding-top:3px;
}

.about-copy p {
  font-size:16px;
  color:var(--muted);
  margin-bottom:16px;
}

.about-copy .lead {
  font-size:21px;
  line-height:1.5;
  color:var(--ink);
}

.about-copy p:last-child {
  margin-bottom:0;
}

.integration {
  background:#f0f4ec;
}

.section-top {
  display:flex;
  justify-content:space-between;
  align-items:end;
  gap:25px;
  margin-bottom:36px;
}

.section-top>p {
  font-size:16px;
  color:var(--muted);
  margin-bottom:3px;
}

.feature-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:17px;
}

.feature {
  border:1px solid #dee7d8;
  background:var(--cream);
  padding:26px 25px;
  display:flex;
  flex-direction:column;
  border-radius:7px;
}

.feature-top {
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:36px;
}

.feature-top>span:last-child {
  font-size:10px;
  color:var(--muted);
}

.feature-icon {
  width:42px;
  height:42px;
  display:grid;
  place-items:center;
  background:#eaf1df;
  border-radius:5px;
  font-size:23px;
  color:#49713b;
}

.search-icon {
  font-size:31px;
}

.feature h3 {
  font-size:19px;
  letter-spacing:-.5px;
  margin-bottom:14px;
}

.feature p {
  font-size:16px;
  color:var(--muted);
  margin-bottom:28px;
}

.feature a {
  font-size:14px;
  font-weight:600;
  margin-top:auto;
  display:flex;
  justify-content:space-between;
  gap:12px;
}

.arp-link {
  display:block;
  width:fit-content;
  margin:27px auto 0;
  font-size:14px;
  font-weight:600;
}

.arp-link span {
  margin-left:12px;
}

.start {
  background:var(--green);
  color:white;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:95px;
}

.start .eyebrow {
  color:#c6dcab;
}

.start h2 {
  font-size:40px;
  margin-bottom:22px;
}

.start-heading>p:not(.eyebrow) {
  color:#e9f2e7;
  font-size:16px;
  max-width:360px;
  margin-bottom:27px;
}

.light {
  background:var(--lime);
  color:var(--ink);
}

.light:hover {
  background:#d1ec73;
  color:var(--ink);
}

.steps {
  list-style:none;
  margin:0;
  padding:0;
}

.steps li {
  display:flex;
  gap:24px;
  padding:24px 0;
  border-bottom:1px solid #ffffff26;
}

.steps li:first-child {
  padding-top:4px;
}

.steps li:last-child {
  border-bottom:0;
  padding-bottom:0;
}

.steps li>span {
  font-size:12px;
  color:#c3df8b;
  padding-top:4px;
}

.steps h3 {
  font-size:19px;
  margin-bottom:9px;
}

.steps p {
  font-size:16px;
  color:#e9f2e7;
  margin-bottom:0;
}

footer {
  padding:35px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}

.footer-brand {
  font-size:16px;
  font-weight:700;
  letter-spacing:1px;
}

.footer-brand span {
  display:block;
  font-size:12px;
  font-weight:400;
  letter-spacing:0;
  color:var(--muted);
  margin-top:5px;
}

footer p {
  font-size:12px;
  color:var(--muted);
  margin:0;
}

footer>div {
  display:flex;
  flex-wrap:wrap;
  gap:25px;
  font-size:12px;
}

@media(min-width:1500px) {
  body {
    padding:0 25px;
  }
  .header {
    padding-top:35px;
  }
  .hero {
    padding-top:40px;
    padding-bottom:40px;
  }
}

@media(max-width:1000px) {
  .header {
    padding:25px 5%;
  }
  nav {
    gap:20px;
  }
  .hero {
    padding:28px 5%;
    gap:40px;
  }
  .hero-tags {
    gap:10px;
  }
  h1 {
    font-size:49px;
  }
  .section {
    padding:40px 5%;
  }
  .about {
    gap:40px;
  }
  .start {
    gap:45px;
  }
  .feature {
    padding:22px 18px;
  }
  .feature h3 {
    font-size:17px;
  }
  .actions {
    gap:17px;
  }
}

@media(max-width:700px) {
  .header {
    padding:20px 6%;
    flex-wrap:wrap;
    gap:20px;
  }
  .brand {
    width:100%;
  }
  nav {
    width:100%;
    justify-content:space-between;
    font-size:15px;
    gap:14px;
    flex-wrap:wrap;
  }
  nav a {
    padding:9px 0;
  }
  .hero {
    grid-template-columns:1fr;
    padding:28px 6%;
    gap:38px;
  }
  h1 {
    font-size:52px;
    letter-spacing:-2.4px;
  }
  .hero-description {
    font-size:18px;
  }
  .eyebrow {
    font-size:9px;
    margin-bottom:23px;
  }
  .hero-tags {
    gap:17px;
    flex-wrap:wrap;
  }
  .diagram-heading {
    left:18px;
    right:18px;
    font-size:12px;
    letter-spacing:.7px;
  }
  .section {
    padding:36px 6%;
  }
  .about {
    grid-template-columns:1fr;
    gap:25px;
  }
  h2 {
    font-size:34px;
  }
  .section-top {
    display:block;
  }
  .section-top>p {
    margin-top:20px;
  }
  .section-top>p br {
    display:none;
  }
  .feature-grid {
    grid-template-columns:1fr;
    gap:14px;
  }
  .feature {
    padding:25px;
  }
  .feature-top {
    margin-bottom:23px;
  }
  .feature h3 {
    font-size:21px;
  }
  .feature p {
    font-size:16px;
    margin-bottom:23px;
  }
  .feature a {
    font-size:14px;
  }
  .arp-link {
    line-height:1.7;
    font-size:14px;
  }
  .start {
    grid-template-columns:1fr;
    gap:37px;
  }
  .start h2 {
    font-size:36px;
  }
  .start-heading>p:not(.eyebrow) {
    font-size:16px;
  }
  .steps p {
    font-size:16px;
  }
  footer {
    padding:28px 0;
    flex-wrap:wrap;
  }
  footer p {
    order:3;
    width:100%;
  }
  footer>div {
    gap:15px;
  }
}

@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto;
  }
  .button {
    transition:none;
  }
  .button:hover {
    transform:none;
  }
}

.inline-link {
  color: var(--green);
  text-decoration: underline;
  text-underline-offset: 3px;
}

footer {
  flex-wrap: wrap;
}

footer .license-block {
  flex-basis: 100%;
  order: 4;
  border-top: 1px solid var(--line);
  padding:20px 6% 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px 30px;
}

footer .license-logos {
  display: flex;
  align-items: center;
  gap: 24px;
}

.license-logos a {
  display: inline-flex;
  align-items: center;
}

.dataverse-logo {
  width: 130px;
  display: block;
}

.harvard-brand {
  gap: 7px;
}

.harvard-brand img {
  width: 48px;
  display: block;
}

.harvard-brand span {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 23px;
  color: #242424;
}

footer .license-notice {
  flex: 1 1 330px;
  font-size: 12px;
  order: initial;
}

.support-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
}

.support-list li {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.support-list li:last-child {
  padding-bottom: 0;
}

.support-list h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.support-list p {
  margin-bottom: 0;
}

.support-brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-top: 32px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
}

.support-brand img {
  width: 160px;
  display: block;
}

.arp-brand {
  display: block;
  width: 220px;
  max-width: 100%;
  margin-top: 32px;
}

.arp-brand img {
  display: block;
}

.service-node-logo {
  width: 34px;
  height: 34px;
  object-fit: contain;
  flex-shrink: 0;
}

.service-card-logo {
  width: 52px;
  height: 48px;
  object-fit: contain;
  display: block;
}

/* Counter-rotation keeps labels upright during a constant-speed circular drift. */
@keyframes continuous-orbit {
  from { transform:rotate(0deg) translateX(var(--float-radius)) rotate(0deg); }
  to { transform:rotate(360deg) translateX(var(--float-radius)) rotate(-360deg); }
}

@media(max-width:700px) {
  .ecosystem {
    width:100%;
    margin:0;
  }
}

@media(prefers-reduced-motion:reduce) {
  .satellite, .hub img {
    animation:none;
  }
}

/* Lucide SVGs inherit link colors without platform-specific emoji rendering. */
.link-icon {
  width:16px;
  height:16px;
  flex-shrink:0;
}

.arp-link, footer>div>a {
  display:inline-flex;
  align-items:center;
  gap:8px;
}

.feature a {
  align-items:center;
}

@media(min-width:701px) and (max-width:900px) {
  .header {
    flex-wrap:wrap;
  }
  nav {
    width:100%;
    justify-content:space-between;
  }
}

nav a {
  white-space:nowrap;
}

@media(min-width:701px) {
  .hero-copy {
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    justify-content:space-between;
    gap:24px;
  }
  .hero-copy > .eyebrow, .hero-copy > h1, .hero-description {
    margin-bottom:0;
  }
  .hero-tags {
    margin-top:0;
  }
  .ecosystem {
    height:auto;
    min-height:560px;
  }
}

.customization-icon {
  display:block;
  width:144px;
  height:144px;
  margin-top:32px;
  padding:28px;
  border-radius:16px;
  background:var(--mint);
  color:var(--green);
}

footer {
  border-top:1px solid var(--line);
}

#hunverse {
  border-top:1px solid var(--line);
}

footer > .footer-brand {
  margin-left:6%;
}

footer > div:first-of-type {
  margin-inline:6%;
}