/* Homepage, Research page and research-area pages. Same type and colours as article.css. */

.nb-site {
	--nb-text: #242424;
	--nb-muted: #6b6b6b;
	--nb-faint: #f7f7f5;
	--nb-line: #e6e6e6;
	--nb-accent: var(--ast-global-color-0, #0170b9);
	--nb-serif: "Source Serif 4", Charter, Georgia, Cambria, serif;
	--nb-sans: Inter, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	flex: 1 1 100%;
	width: 100%;
	min-width: 0;
	color: var(--nb-text);
	font-family: var(--nb-sans);
	background: #fff;
	padding-bottom: 40px;
}

.nb-wrap { max-width: 1120px; margin-left: auto; margin-right: auto; padding-left: 24px; padding-right: 24px; }

.nb-preview-note {
	margin: 0; padding: 10px 24px; text-align: center;
	font: 500 13px/1.4 var(--nb-sans); color: #7a4d00; background: #fff4d6; border-bottom: 1px solid #f0dfae;
}

/* ---------- type */
.nb-site .nb-display { font: 700 clamp(38px, 4.4vw, 60px)/1.06 var(--nb-sans); letter-spacing: -0.03em; color: var(--nb-text); margin: 0 0 18px; }
.nb-site .nb-h2 { font: 700 clamp(24px, 2.2vw, 30px)/1.2 var(--nb-sans); letter-spacing: -0.02em; color: var(--nb-text); margin: 0; }
.nb-site .nb-label { font: 600 12px/1 var(--nb-sans); letter-spacing: .1em; text-transform: uppercase; color: var(--nb-muted); margin: 0 0 16px; }
.nb-site .nb-kicker { display: inline-block; font: 600 13px/1 var(--nb-sans); letter-spacing: .08em; text-transform: uppercase; color: var(--nb-accent); margin: 0 0 18px; text-decoration: none; }
.nb-site .nb-lead { font: 400 clamp(18px, 1.6vw, 21px)/1.5 var(--nb-sans); color: #4a4a4a; margin: 0 0 28px; max-width: 34em; }
.nb-site .nb-lead p { margin: 0 0 .8em; }
.nb-site .nb-prose { font: 400 clamp(18px, 0.45vw + 14.2px, 20px)/1.65 var(--nb-serif); color: var(--nb-text); max-width: 760px; }
.nb-site .nb-prose p { margin: 0 0 1.2em; }
.nb-site .nb-prose a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }

/* ---------- buttons */
.nb-site .nb-btn {
	display: inline-flex; align-items: center; font: 500 15px/1 var(--nb-sans);
	padding: 12px 20px; border-radius: 999px; border: 1px solid #cfcfcf; background: #fff;
	color: var(--nb-text) !important; text-decoration: none !important; transition: border-color .15s, background .15s;
}
.nb-site .nb-btn:hover { border-color: var(--nb-text); }
.nb-site .nb-btn--primary { background: var(--nb-text); border-color: var(--nb-text); color: #fff !important; }
.nb-site .nb-btn--primary:hover { background: #000; }

/* ---------- hero */
.nb-hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 56px; align-items: center; padding-top: 72px; padding-bottom: 56px; }
.nb-hero__actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 0; }
.nb-hero__img { margin: 0; }
.nb-hero__img img { width: 100%; height: auto; display: block; border-radius: 14px; box-shadow: 0 20px 50px rgba(0, 0, 0, .12); }
.nb-hero__img figcaption { font-size: 13px; color: var(--nb-muted); margin-top: 10px; text-align: center; }

/* ---------- sections */
.nb-section { padding-top: 56px; padding-bottom: 8px; }
.nb-section__head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 26px; }
.nb-more { font-size: 15px; font-weight: 500; color: var(--nb-text); text-decoration: none; white-space: nowrap; }
.nb-more:hover { text-decoration: underline; }
.nb-about { border-top: 1px solid var(--nb-line); padding-top: 48px; }

/* ---------- research area cards */
.nb-area-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 24px; }
.nb-area-card {
	display: flex; flex-direction: column; text-decoration: none; color: var(--nb-text);
	border: 1px solid var(--nb-line); border-radius: 14px; overflow: hidden; background: #fff;
	transition: box-shadow .2s, transform .2s, border-color .2s;
}
.nb-area-card:hover { box-shadow: 0 14px 34px rgba(0, 0, 0, .09); transform: translateY(-2px); border-color: #d6d6d6; }
.nb-area-card__img { display: block; aspect-ratio: 16 / 10; background: var(--nb-faint); overflow: hidden; }
.nb-area-card__img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.nb-area-card__body { display: flex; flex-direction: column; gap: 6px; padding: 20px 22px 22px; flex: 1; }
.nb-area-card__title { font: 700 21px/1.25 var(--nb-sans); letter-spacing: -0.01em; }
.nb-area-card__subtitle { font: 500 14px/1.4 var(--nb-sans); color: var(--nb-accent); }
.nb-area-card__text { font: 400 15.5px/1.55 var(--nb-sans); color: #4a4a4a; margin-top: 4px; }
.nb-area-card__more { margin-top: auto; padding-top: 14px; font: 500 14px/1 var(--nb-sans); color: var(--nb-text); }

/* ---------- article cards */
.nb-site .nb-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 28px; }
.nb-site .nb-card { display: flex; flex-direction: column; gap: 8px; text-decoration: none; color: var(--nb-text); }
.nb-site .nb-card__img { aspect-ratio: 16 / 10; overflow: hidden; border-radius: 10px; background: var(--nb-faint); border: 1px solid var(--nb-line); margin-bottom: 4px; }
.nb-site .nb-card__img img { width: 100%; height: 100%; object-fit: contain; display: block; }
.nb-site .nb-card__meta { font: 600 12px/1.2 var(--nb-sans); letter-spacing: .06em; text-transform: uppercase; color: var(--nb-muted); }
.nb-site .nb-card__title { font: 700 17.5px/1.35 var(--nb-sans); letter-spacing: -0.005em; }
.nb-site .nb-card:hover .nb-card__title { text-decoration: underline; text-underline-offset: 3px; }
.nb-site .nb-card__foot { font-size: 13.5px; color: var(--nb-muted); }

/* ---------- publications */
.nb-pubs { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--nb-line); }
.nb-pub { padding: 20px 0; border-bottom: 1px solid var(--nb-line); margin: 0; }
.nb-pub p { margin: 0; }
.nb-pub__meta { font: 600 12px/1.2 var(--nb-sans); letter-spacing: .06em; text-transform: uppercase; color: var(--nb-muted); margin-bottom: 6px !important; }
.nb-pub__title { font: 600 18px/1.4 var(--nb-sans); }
.nb-pub__title a { color: var(--nb-text); text-decoration: none; }
.nb-pub__title a:hover { text-decoration: underline; text-underline-offset: 3px; }
.nb-pub__authors { font-size: 15px; color: #4a4a4a; margin-top: 4px !important; }
.nb-pub__authors strong { color: var(--nb-text); font-weight: 600; }
.nb-pub__venue { font-size: 15px; font-style: italic; color: var(--nb-muted); margin-top: 2px !important; }
.nb-pub__links { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 10px !important; font-size: 14px; font-weight: 500; }
.nb-pub__links a { color: var(--nb-accent); text-decoration: none; }
.nb-pub__links a:hover { text-decoration: underline; }

/* ---------- contact */
.nb-contact { text-align: center; padding-top: 64px; }
.nb-contact p { font-size: 17px; color: #4a4a4a; margin: 12px 0 0; }
.nb-contact__links { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 22px !important; }

/* ---------- research page and area pages */
.nb-page-head { padding-top: 64px; }
.nb-area-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; align-items: center; padding-top: 64px; padding-bottom: 24px; }
.nb-area-hero__img { margin: 0; }
.nb-area-hero__img img { width: 100%; height: auto; display: block; border-radius: 14px; border: 1px solid var(--nb-line); }
.nb-area-body { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 56px; padding-top: 32px; }
.nb-topics { background: var(--nb-faint); border-radius: 14px; padding: 24px 26px; align-self: start; }
.nb-topics ul { margin: 0; padding: 0 0 0 1.1em; font-size: 15.5px; line-height: 1.5; }
.nb-topics li { margin-bottom: 8px; }
.nb-area-nav { padding-top: 56px; }
.nb-area-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.nb-area-nav a { display: inline-block; padding: 10px 18px; border-radius: 999px; background: #f2f2f2; color: var(--nb-text); text-decoration: none; font-size: 15px; font-weight: 500; }
.nb-area-nav a:hover { background: #e8e8e8; }

/* ---------- small screens */
@media (max-width: 860px) {
	.nb-hero, .nb-area-hero, .nb-area-body { grid-template-columns: minmax(0, 1fr); gap: 32px; }
	.nb-hero { padding-top: 40px; }
	.nb-area-hero { padding-top: 40px; }
}
@media (max-width: 600px) {
	.nb-wrap { padding-left: 16px; padding-right: 16px; }
	.nb-section__head { flex-direction: column; gap: 6px; }
	.nb-area-grid { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- image credits */
.nb-credits { font-size: 12.5px; color: var(--nb-muted); margin: 14px 0 0; }
.nb-credits a, .nb-area-hero__img figcaption a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.nb-area-hero__img figcaption { font-size: 12.5px; color: var(--nb-muted); margin-top: 8px; }
/* The hero illustration is dark; keep the caption readable and the frame tidy. */
.nb-hero__img img { background: #0d2236; }

/* ---------- publications page */
.nb-pub-stats { font-size: 15px; color: var(--nb-muted); margin: 0; }
.nb-pub-stats a { color: var(--nb-accent); text-decoration: none; }
.nb-filters { display: flex; flex-wrap: wrap; gap: 12px 28px; padding: 28px 0 8px; position: sticky; top: 0; background: #fff; z-index: 5; border-bottom: 1px solid var(--nb-line); }
.nb-filters__group { display: flex; flex-wrap: wrap; gap: 6px; }
.nb-filters button {
	font: 500 14px/1 var(--nb-sans); padding: 9px 14px; border-radius: 999px; cursor: pointer;
	border: 1px solid #d9d9d9; background: #fff; color: var(--nb-text);
}
.nb-filters button:hover { border-color: var(--nb-text); }
.nb-filters button.is-on { background: var(--nb-text); border-color: var(--nb-text); color: #fff; }
.nb-filters__empty { color: var(--nb-muted); padding: 24px 0; margin: 0; }
.nb-year { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 24px; padding-top: 28px; }
.nb-year__title { font: 700 26px/1.2 var(--nb-sans); color: #c4c4c4; margin: 18px 0 0; letter-spacing: -0.02em; position: sticky; top: 90px; align-self: start; }
.nb-pubs-page .nb-pubs { border-top: 0; }
.nb-pub__oa { color: #1a7f37; }
.nb-pub__toggle {
	font: 500 14px/1 var(--nb-sans); color: var(--nb-accent); background: none; border: 0; padding: 0; cursor: pointer;
}
.nb-pub__toggle:hover, .nb-pub__toggle.is-on { text-decoration: underline; text-underline-offset: 3px; }
.nb-pub__panel { margin-top: 12px; background: var(--nb-faint); border-radius: 10px; padding: 16px 18px; }
.nb-pub__panel > p { font: 400 16px/1.6 var(--nb-serif); margin: 0; color: #333; }
.nb-pub__cite { display: grid; gap: 10px; }
.nb-pub__cite[hidden], .nb-pub__panel[hidden] { display: none; }
.nb-pub__cite-block { background: #fff; border: 1px solid var(--nb-line); border-radius: 8px; padding: 10px 12px; }
.nb-pub__cite-head { display: flex; justify-content: space-between; align-items: center; font-size: 11.5px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--nb-muted); margin-bottom: 6px; }
.nb-pub__cite-block p { font-size: 14px; line-height: 1.55; margin: 0; }
.nb-pub__cite-block pre { margin: 0; font: 12.5px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; white-space: pre-wrap; word-break: break-word; background: none; padding: 0; border: 0; }
.nb-site .nb-copy { font: 500 13px/1 var(--nb-sans); background: none; border: 0; padding: 4px 6px; border-radius: 4px; color: var(--nb-accent); cursor: pointer; text-transform: none; letter-spacing: 0; }
.nb-pubs-note { font-size: 13.5px; color: var(--nb-muted); margin: 40px 0 0; }
@media (max-width: 720px) {
	.nb-year { grid-template-columns: minmax(0, 1fr); gap: 0; }
	.nb-year__title { position: static; margin: 8px 0 0; }
	.nb-filters { position: static; }
}

/* ---------- about page */
.nb-hero--text { grid-template-columns: minmax(0, 1fr); }
.nb-portrait { margin: 0; justify-self: center; width: min(100%, 380px); }
.nb-portrait img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; display: block; border-radius: 14px; box-shadow: 0 20px 50px rgba(0, 0, 0, .12); }
.nb-portrait--empty { aspect-ratio: 4 / 5; display: grid; place-items: center; text-align: center; border: 2px dashed #d0d0d0; border-radius: 14px; color: var(--nb-muted); font-size: 15px; background: var(--nb-faint); }
.nb-portrait--empty small { font-size: 13px; }
.nb-about-page .nb-prose { max-width: none; }
.nb-about-page .nb-prose > * { max-width: 760px; }
.nb-about-page .nb-prose > h2 { font: 700 clamp(24px, 2.2vw, 30px)/1.2 var(--nb-sans); letter-spacing: -0.02em; margin: 56px 0 14px; scroll-margin-top: 24px; }
.nb-about-page .nb-prose > .nb-work-grid { max-width: none; }
.nb-work-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 22px; margin: 28px 0 8px; }
.nb-work { border: 1px solid var(--nb-line); border-radius: 14px; padding: 22px 24px 18px; background: #fff; font-family: var(--nb-sans); }
.nb-site .nb-work h3 { font: 700 19px/1.3 var(--nb-sans); letter-spacing: -0.01em; margin: 0 0 8px; color: var(--nb-text); }
.nb-site .nb-work p { font: 400 15.5px/1.55 var(--nb-sans); color: #4a4a4a; margin: 0 0 10px; }
.nb-site .nb-work ul { margin: 0 0 10px; padding: 0 0 0 1.1em; font: 400 15px/1.5 var(--nb-sans); color: #4a4a4a; }
.nb-site .nb-work li { margin-bottom: 6px; }
.nb-site .nb-work p.nb-work__with { font: 500 13.5px/1.4 var(--nb-sans); color: var(--nb-accent); margin: 12px 0 2px; }
.nb-site .nb-work p.nb-work__with a { color: inherit; }
.nb-site .nb-prose p.nb-note { font: 400 14px/1.5 var(--nb-sans); color: var(--nb-muted); }
@media (max-width: 600px) {
	.nb-work-grid { grid-template-columns: minmax(0, 1fr); }
	.nb-portrait { width: min(100%, 300px); }
}