:root {
  --paper: #fbfbf8;
  --ink: #17262b;
  --muted: #4f5f63;
  --river: #0f4c55;
  --jade: #2e8c80;
  --stone: #d8d6cc;
  --ochre: #a8731f;
  --wash: #eef3f1;
  --serif: "Literata", Georgia, serif;
  --sans: "Public Sans", system-ui, sans-serif;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--sans);
}
img { max-width: 100%; display: block; }
a { color: var(--river); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--jade); }
:focus-visible { outline: 3px solid var(--jade); outline-offset: 3px; border-radius: 2px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 12px; background: #fff; padding: 8px 12px; z-index: 10; }

/* Header */
.site-header { border-bottom: 1px solid var(--stone); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 76px; flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }
.wordmark { text-decoration: none; color: var(--ink); line-height: 1.15; }
.wordmark strong { display: block; font: 600 1.25rem/1.15 var(--serif); color: var(--river); }
.wordmark span { font-size: .875rem; color: var(--muted); }
.nav { display: flex; gap: 4px 22px; flex-wrap: wrap; list-style: none; margin: 0; padding: 0; }
.nav a { text-decoration: none; color: var(--ink); font-size: .975rem; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--river); border-bottom-color: var(--stone); }
.nav a[aria-current="page"] { color: var(--river); border-bottom-color: var(--jade); }
.nav .nav-join a { color: var(--ochre); font-weight: 600; }

/* Type */
h1, h2, h3 { font-family: var(--serif); font-weight: 600; color: var(--ink); margin: 0; }
h1 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); line-height: 1.12; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.1rem); line-height: 1.2; }
h3 { font-size: 1.3rem; line-height: 1.3; }
p { margin: 0 0 1em; }
.lede { font-size: 1.2rem; line-height: 1.55; color: var(--muted); max-width: 60ch; }
.prose { max-width: 68ch; }

/* Hero */
.hero { padding: 64px 0 0; }
.hero h1 { max-width: 20ch; margin-bottom: 20px; }
.hydro { margin-top: 40px; position: relative; }
.hydro svg { width: 100%; height: auto; display: block; overflow: visible; }
.hydro .flow { fill: none; stroke: var(--river); stroke-width: 2.4; stroke-linejoin: round; }
.hydro .dry { fill: none; stroke: var(--ochre); stroke-width: 2.4; stroke-dasharray: 2 6; stroke-linecap: round; }
.hydro .bed { stroke: var(--stone); stroke-width: 1; }
.hydro text { font: 500 13px var(--sans); fill: var(--muted); }
.hydro .t-dry { fill: var(--ochre); }
.hydro-caption { font-size: .85rem; color: var(--muted); margin: 10px 0 0; }

@media (prefers-reduced-motion: no-preference) {
  .hydro .draw { stroke-dasharray: var(--len); stroke-dashoffset: var(--len); animation: draw 2.6s cubic-bezier(.4,.1,.3,1) forwards; }
  .hydro .draw.d2 { animation-delay: 1.9s; animation-duration: .9s; }
  .hydro .draw.d3 { animation-delay: 2.6s; animation-duration: 1.1s; }
  .hydro .dry { opacity: 0; animation: fade .6s 1.9s forwards; }
  @keyframes draw { to { stroke-dashoffset: 0; } }
  @keyframes fade { to { opacity: 1; } }
}

/* Sections */
.section { padding: 72px 0; }
.section + .section { border-top: 1px solid var(--stone); }
.section-head { display: grid; grid-template-columns: 1fr; gap: 12px; margin-bottom: 36px; }
.section-head p { color: var(--muted); max-width: 62ch; margin: 0; }

.themes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px 56px; }
.theme { border-top: 3px solid var(--river); padding-top: 18px; }
.theme:nth-child(2) { border-top-color: var(--ochre); }
.theme:nth-child(3) { border-top-color: var(--jade); }
.theme:nth-child(4) { border-top-color: var(--muted); }
.theme h3 { margin-bottom: 10px; }
.theme p { color: var(--muted); margin: 0; }
.theme ul { color: var(--muted); padding-left: 1.1em; margin: 12px 0 0; }
.theme li { margin-bottom: 4px; }

.feature { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start; }
.facts { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--stone); }
.facts li { padding: 14px 0; border-bottom: 1px solid var(--stone); display: grid; grid-template-columns: 9.5em 1fr; gap: 16px; }
.facts b { font-weight: 600; color: var(--river); }

.join-band { background: var(--river); color: #e9f2f0; }
.join-band .wrap { padding-top: 56px; padding-bottom: 56px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: center; }
.join-band h2 { color: #fff; margin-bottom: 12px; }
.join-band p { margin: 0; max-width: 56ch; }
.button { display: inline-block; background: var(--ochre); color: #fff; text-decoration: none; font-weight: 600; padding: 13px 22px; border-radius: 4px; }
.button:hover { background: #8f611a; color: #fff; }
.button.ghost { background: transparent; color: var(--river); border: 1.5px solid var(--river); }
.button.ghost:hover { background: var(--wash); color: var(--river); }
.join-band .actions { justify-self: end; }

/* People */
.person { display: grid; grid-template-columns: 220px 1fr; gap: 40px; padding: 40px 0; border-bottom: 1px solid var(--stone); }
.person:first-of-type { padding-top: 0; }
.person img, .person .placeholder { width: 220px; height: 220px; object-fit: cover; border-radius: 4px; }
.placeholder { background: var(--wash); display: grid; place-items: center; font: 600 3rem var(--serif); color: var(--jade); }
.person .role { color: var(--jade); font-weight: 600; margin: 4px 0 14px; }
.person .links { font-size: .95rem; }
.person .links a { margin-right: 16px; }
.mini-people { display: flex; gap: 36px; flex-wrap: wrap; }
.mini { display: flex; gap: 16px; align-items: center; text-decoration: none; color: var(--ink); }
.mini img, .mini .placeholder { width: 72px; height: 72px; border-radius: 50%; object-fit: cover; font-size: 1.4rem; }
.mini strong { display: block; }
.mini span { color: var(--muted); font-size: .95rem; }

/* Publications */
.pubs-year { display: grid; grid-template-columns: 6rem 1fr; gap: 24px; padding: 22px 0; border-top: 1px solid var(--stone); }
.pubs-year h2 { font-size: 1.4rem; color: var(--river); }
.pubs-year ol { list-style: none; margin: 0; padding: 0; }
.pubs-year li { margin-bottom: 16px; max-width: 78ch; }
.pubs-year li:last-child { margin-bottom: 0; }
.pubs-year .title { font-weight: 600; }
.pubs-year em { color: var(--muted); }
.me { text-decoration: underline; text-decoration-color: var(--jade); text-decoration-thickness: 2px; text-underline-offset: 3px; }

/* Join page */
.position { border: 1px solid var(--stone); border-left: 5px solid var(--ochre); background: #fff; padding: 32px 36px; border-radius: 4px; }
.position h2 { margin-bottom: 6px; }
.terms { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin: 24px 0 28px; border-top: 1px solid var(--stone); }
.terms div { padding: 14px 16px 14px 0; border-bottom: 1px solid var(--stone); }
.terms dt { font-size: .875rem; color: var(--muted); }
.terms dd { margin: 2px 0 0; font-weight: 600; }
.position h3 { margin: 28px 0 10px; font-size: 1.15rem; }
.position ul, .position ol { padding-left: 1.2em; max-width: 70ch; }
.position li { margin-bottom: 6px; }

.page-head { padding: 56px 0 8px; }
.page-head h1 { margin-bottom: 14px; }

/* Footer */
.site-footer { border-top: 1px solid var(--stone); padding: 40px 0 48px; color: var(--muted); font-size: .95rem; margin-top: 24px; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.site-footer p { margin: 0 0 4px; }

@media (max-width: 860px) {
  .themes, .feature, .join-band .wrap { grid-template-columns: 1fr; gap: 32px; }
  .join-band .actions { justify-self: start; }
  .person { grid-template-columns: 1fr; gap: 20px; }
  .person img, .person .placeholder { width: 160px; height: 160px; }
  .terms { grid-template-columns: 1fr 1fr; }
  .pubs-year { grid-template-columns: 1fr; gap: 8px; }
  .facts li { grid-template-columns: 1fr; gap: 2px; }
  .hydro text { font-size: 24px; }
  .hydro .flow, .hydro .dry { stroke-width: 3.5; }
}
@media (max-width: 520px) {
  body { font-size: 1rem; }
  .wrap { padding: 0 16px; }
  .hero { padding-top: 40px; }
  .section { padding: 52px 0; }
  .position { padding: 24px 20px; }
  .terms { grid-template-columns: 1fr; }
  .hydro .t-hide { display: none; }
  .hydro text { font-size: 40px; }
  .hydro .flow, .hydro .dry { stroke-width: 5; }
  .hydro svg { overflow: visible; margin-top: 24px; }
}

/* Research questions */
.questions { list-style: none; counter-reset: q; margin: 0; padding: 0; max-width: 72ch; }
.questions li { counter-increment: q; display: grid; grid-template-columns: 3rem 1fr; gap: 8px; padding: 22px 0; border-top: 1px solid var(--stone); font: 500 1.25rem/1.5 var(--serif); }
.questions li::before { content: counter(q); font: 600 1.6rem/1.2 var(--serif); color: var(--jade); }
@media (max-width: 520px) { .questions li { font-size: 1.1rem; grid-template-columns: 2.2rem 1fr; } }

/* Research figures */
.figs { display: grid; grid-template-columns: 1fr 1.15fr 1.3fr; gap: 32px; align-items: start; }
.figs figure { margin: 0; }
.figs img { width: 100%; height: auto; border-radius: 4px; }
.fig-pair img + img { margin-top: 6px; }
.fig-diagram img { border: 1px solid var(--stone); background: #fff; padding: 10px; max-width: 420px; }
.figs figcaption { font-size: .9rem; line-height: 1.5; color: var(--muted); margin-top: 10px; max-width: 46ch; }
@media (max-width: 860px) { .figs { grid-template-columns: 1fr; gap: 36px; } .figs figure { max-width: 560px; } }

/* Portrait crops keep faces in frame */
.person img, .mini img { object-position: center top; }

.directions { list-style: none; padding-left: 0 !important; }
.directions li { border-left: 3px solid var(--jade); padding: 4px 0 4px 16px; margin-bottom: 14px !important; }
.directions strong { color: var(--river); }

/* Field photos */
.photo-band { margin: 56px 0 0; }
.photo-band img { width: 100%; height: clamp(260px, 42vw, 560px); object-fit: cover; object-position: center 60%; }
.photo-band figcaption { font-size: .85rem; color: var(--muted); padding-top: 10px; }
.side-photo { margin: 0; }
.side-photo img { width: 100%; max-width: 460px; border-radius: 4px; }
.side-photo figcaption { font-size: .9rem; color: var(--muted); margin-top: 10px; }