:root{
  --bg:#0c1319; --card:#111b23; --line:#22303c;
  --text:#c9d3dd; --mute:#8b9aa8; --head:#f1f4f7;
  --a:#8fb8d4;   /* steel blue: links, accents */
  --b:#d1b27a;   /* sand: labels, dates */
  --r:6px;
  --serif:'Newsreader',Georgia,serif;
  --sans:'Source Sans 3',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{background:var(--bg);color:var(--text);font:400 17.5px/1.65 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--a);text-decoration:none;transition:color .2s}
a:hover{color:var(--head)}
#flow,#water{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
main,footer{position:relative;z-index:1}
.wrap{max-width:1120px;margin:0 auto;padding-left:24px;padding-right:24px}
section{padding:96px 0}
h1,h2,h3{font-family:var(--serif);color:var(--head);line-height:1.15;font-weight:500;letter-spacing:-.01em}
h2{font-size:clamp(30px,4vw,44px);margin-bottom:18px}
h3{font-size:22px;margin-bottom:10px;font-weight:600}
.kicker{color:var(--b);font:600 12.5px var(--sans);letter-spacing:.14em;text-transform:uppercase;margin-bottom:12px}
.sub{max-width:680px;color:var(--mute);margin-bottom:40px}
.small{font-size:15px;color:var(--mute)}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:14px max(24px,calc((100vw - 1120px)/2 + 24px));background:rgba(12,19,25,.85);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .3s}
.nav.scrolled{border-color:var(--line)}
.brand{font:600 21px var(--serif);color:var(--head);letter-spacing:0}
nav{display:flex;gap:24px;align-items:center}
nav a{color:var(--mute);font-size:15px;font-weight:500}
nav a:hover,nav a.active{color:var(--head)}
nav .cta{border:1px solid var(--mute);color:var(--head);padding:6px 16px;border-radius:var(--r)}
nav .cta:hover{background:var(--head);color:var(--bg);border-color:var(--head)}
.burger{display:none;background:none;border:0;width:36px;height:36px;cursor:pointer}
.burger i{display:block;height:2px;background:var(--head);margin:7px 6px}

/* hero */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;padding:120px 0 80px}
.hero-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:64px;align-items:center;width:100%}
.eyebrow{color:var(--b);font-weight:500;font-size:16px;margin-bottom:18px}
h1{font-size:clamp(48px,8vw,92px);font-weight:500;margin-bottom:24px;letter-spacing:-.02em}
h1 em{font-style:italic;color:var(--a);font-weight:400}
.lead{font-size:clamp(19px,2.2vw,23px);color:var(--text);max-width:600px;font-weight:300}
.lead b{color:var(--head);font-weight:500}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:34px 0 26px}
.btn{display:inline-block;padding:11px 24px;border-radius:var(--r);border:1px solid #3a4b5a;color:var(--head);font-weight:500;font-size:15.5px;transition:.2s}
.btn:hover{border-color:var(--head);color:var(--head)}
.btn.primary{background:var(--head);color:var(--bg);border-color:var(--head)}
.btn.primary:hover{background:var(--a);border-color:var(--a);color:var(--bg)}
.chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none}
.chips li,.tags span{font-size:13.5px;padding:2px 10px;border-radius:3px;border:1px solid var(--line);color:var(--mute)}
.portrait{position:relative;justify-self:center;width:min(360px,80%);aspect-ratio:4/5}
.portrait::before{content:"";position:absolute;inset:14px -14px -14px 14px;border:1px solid var(--b);opacity:.55;border-radius:var(--r)}
.photo{position:absolute;inset:0;overflow:hidden;border-radius:var(--r);background:var(--card);display:grid;place-items:center}
.photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 25%}
.initials{font:500 80px var(--serif);color:var(--line)}

/* split */
.split{display:grid;grid-template-columns:1fr 1.5fr;gap:56px}
.prose p{margin-bottom:18px}
.prose i{color:var(--head)}

/* cards */
.cards{display:grid;gap:22px}
.cards.three{grid-template-columns:repeat(3,1fr)}
.cards.four{grid-template-columns:repeat(4,1fr)}
.cards.two{grid-template-columns:repeat(2,1fr)}
.card.wide{grid-column:1/-1}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px;transition:border-color .25s;position:relative;overflow:hidden}
.card:hover{border-color:#3a4b5a}
.card p{color:var(--mute);font-size:16px}
.tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.icon{width:30px;height:30px;margin-bottom:16px}
.icon svg{width:30px;height:30px;fill:none;stroke:var(--b);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.card p a{border-bottom:1px solid rgba(143,184,212,.4)}
.card p a:hover{border-color:var(--head)}
/* figures inside cards */
.fig{display:block;margin:-28px -28px 22px;color:inherit;border-bottom:1px solid var(--line)}
.fig .frame{display:block;overflow:hidden;background:#fff}
.fig img{display:block;width:100%;height:190px;object-fit:contain;background:#fff}
.fig figcaption{padding:10px 28px;font-size:13.5px;line-height:1.4;color:var(--mute);background:#0e161d}
.fig.link img{object-fit:cover;object-position:top left;transition:transform .5s ease}
.fig.link.map img{object-fit:contain;object-position:center}
.fig.link:hover img{transform:scale(1.03)}
.fig.link figcaption{color:var(--a);font-weight:500}
/* side-by-side card: tall figure at its natural width, text beside it */
.card.split{display:grid;grid-template-columns:340px 1fr;gap:0 36px;align-items:start}
.card.split .fig{margin:-28px 0 -28px -28px;border-bottom:0;border-right:1px solid var(--line);align-self:stretch;display:flex;flex-direction:column}
.card.split .fig .frame{flex:1;display:flex;align-items:center}
.card.split .fig img{height:auto;max-height:none;object-fit:contain}
.card.split .body{align-self:center;padding:6px 0}
.card.split .fig figcaption{margin-top:auto}
.card.split.rev{grid-template-columns:1fr 400px}
.card.split.rev .fig{margin:-28px -28px -28px 0;border-right:0;border-left:1px solid var(--line)}
.card.split.rev .body{order:-1}
.fig.wip .frame{overflow:hidden}
.fig.wip img{margin-top:-4.5%;width:100%}
.badge{display:inline-block;vertical-align:middle;margin-left:8px;padding:2px 9px;font:600 11px var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--b);border:1px solid rgba(209,178,122,.45);border-radius:3px}
.callout{margin-top:30px;padding:26px 32px;border-left:2px solid var(--b);background:rgba(17,27,35,.7)}
.callout ul{margin-left:20px;color:var(--mute)}
.callout li{margin:8px 0}
.callout b{color:var(--head);font-weight:600}
.plain{list-style:none}
.plain li{margin:12px 0;color:var(--mute);font-size:16px}
.plain b{color:var(--head);font-weight:600}
.plain i{color:var(--text)}

/* storm explorer */
.lab{display:grid;grid-template-columns:330px 1fr;border:1px solid var(--line);border-radius:var(--r);background:rgba(17,27,35,.82);overflow:hidden}
.lab-controls{padding:28px;border-right:1px solid var(--line)}
.lab-label{font:600 12px var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--b);margin-bottom:10px}
.presets{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.presets button{background:none;border:1px solid var(--line);color:var(--mute);padding:5px 12px;border-radius:var(--r);font:500 14px var(--sans);cursor:pointer;transition:.2s}
.presets button:hover{color:var(--head);border-color:#3a4b5a}
.presets button.on{background:var(--head);border-color:var(--head);color:var(--bg)}
.ctl{display:block;margin-bottom:20px}
.ctl span{display:flex;justify-content:space-between;font-size:15px;color:var(--text);margin-bottom:8px}
.ctl output{color:var(--head);font-weight:600}
.ctl-note{font-size:14.5px;color:var(--mute);margin:-8px 0 20px}
.ctl-note b{color:var(--head)}
.check{display:flex;gap:10px;align-items:center;font-size:15px;color:var(--text);margin-top:12px;cursor:pointer}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:20px;background:none;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:2px;background:#3a4b5a}
input[type=range]::-moz-range-track{height:2px;background:#3a4b5a}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--a);border:2px solid var(--bg);margin-top:-7px}
input[type=range]::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--a);border:2px solid var(--bg)}
input[type=checkbox]{accent-color:var(--a);width:16px;height:16px}
.lab-view{padding:24px 28px 14px;min-width:0}
.readouts{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:6px}
.r-name{display:block;font:600 12px var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--mute)}
.readouts b{display:block;font:500 28px/1.2 var(--serif);color:var(--head);margin-top:2px}
.readouts b#r-status{font-size:20px;line-height:1.3;margin-top:8px}
.readouts b.ok{color:var(--a)}
.readouts b.bad{color:#e0a07a}
.r-sub{display:block;font-size:14px;color:var(--mute);min-height:1.4em}
.chart{position:relative}
.chart canvas{position:absolute;left:50px;top:0;height:46%;width:calc(100% - 64px);opacity:.55;pointer-events:none}
.chart svg{display:block;width:100%;height:auto;position:relative}
#hydro .grid{stroke:var(--line);stroke-width:1}
#hydro .tick{fill:var(--mute);font:12px var(--sans)}
#hydro .thresh{stroke:var(--b);stroke-width:1;stroke-dasharray:5 4;opacity:.8}
#hydro .thresh-l{fill:var(--b);font:12px var(--sans)}
#hydro .nat{fill:none;stroke:var(--mute);stroke-width:1.5;stroke-dasharray:4 4}
#hydro .area{fill:rgba(143,184,212,.18)}
#hydro .area.over{fill:rgba(224,160,122,.2)}
#hydro .line{fill:none;stroke:var(--a);stroke-width:2.2;stroke-linejoin:round}
#hydro .line.over{stroke:#e0a07a}
#hydro .peak{fill:var(--a);stroke:var(--bg);stroke-width:2}
#hydro .peak.over{fill:#e0a07a}
.note{margin-top:16px;max-width:820px}

/* projects & partnerships */
.proj-list{border-top:1px solid var(--line)}
.proj{display:grid;grid-template-columns:170px 1fr;gap:32px;padding:34px 0;border-bottom:1px solid var(--line);align-items:start}
.proj-meta time{display:block;margin-top:8px;color:var(--mute);font:500 15px var(--sans)}
.status{display:inline-flex;align-items:center;gap:8px;font:600 12px var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--b)}
.status::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--b)}
.proj-main h3{font-size:24px;margin-bottom:4px}
.proj-main .role{color:var(--a);font-size:15.5px;margin-bottom:12px}
.proj-main p:not(.role){color:var(--mute);font-size:16px;max-width:640px}
.proj{transition:background .25s ease,box-shadow .25s ease}
.proj-main h3{transition:color .25s ease}
.proj:hover{background:rgba(143,184,212,.06);box-shadow:inset 2px 0 0 var(--a)}
.proj:hover .proj-main h3{color:var(--a)}

/* field photo */
.field-row{display:grid;grid-template-columns:1.7fr 1fr;gap:14px;margin-top:44px}
.field{position:relative;margin:0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--card)}
.field img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.field.wide{aspect-ratio:1500/1123}                 /* matches the photo, so nothing is cropped */
.field.tall{min-height:380px}
.field.tall img{object-position:50% 35%}
.field figcaption{position:absolute;left:0;right:0;bottom:0;padding:40px 20px 13px;font:500 15px var(--sans);color:#fff;background:linear-gradient(to top,rgba(12,19,25,.88),rgba(12,19,25,0))}
@media(max-width:700px){.field-row{grid-template-columns:1fr}.field.tall{min-height:0;aspect-ratio:1/1}}

/* pubs */
.filters{display:flex;gap:10px;margin:26px 0}
.filters button{background:none;border:1px solid var(--line);color:var(--mute);padding:6px 16px;border-radius:var(--r);cursor:pointer;font:500 15px var(--sans);transition:.2s}
.filters button:hover{color:var(--head);border-color:#3a4b5a}
.filters button.on{background:var(--head);color:var(--bg);border-color:var(--head)}
.pubs{list-style:none}
.pubs li{display:grid;grid-template-columns:70px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--line);font-size:16px}
.pubs .yr{font:500 22px var(--serif);color:var(--b)}
.pubs .ttl{color:var(--head);font-weight:600;display:block;margin-bottom:3px}
.pubs a.ttl:hover{color:var(--a)}
.pubs .ext{color:var(--a);font-size:.9em;opacity:.7}
.pubs .au{color:var(--mute);font-size:15px}
.pubs .au b{color:var(--text);font-weight:700}
.pubs .jr{color:var(--text);font-style:italic;font-size:15px}
.pubs li.hide{display:none}
.more{margin-top:22px}
.subhead{margin-top:64px;margin-bottom:12px}

/* path */
.path div{display:grid;grid-template-columns:120px 1fr;gap:4px 20px;padding:16px 0;border-bottom:1px solid var(--line)}
.path time{color:var(--b);font:500 15px var(--sans);grid-row:span 2}
.path b{color:var(--head);font-weight:600}
.path span{color:var(--mute);font-size:15.5px}

/* outside of work */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:8px}
.gallery figure{position:relative;overflow:hidden;border-radius:var(--r);border:1px solid var(--line);aspect-ratio:3/4;background:var(--card)}
.gallery figure.wide{grid-column:span 2;aspect-ratio:auto}
.gallery img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.gallery figure:hover img{transform:scale(1.03)}
.gallery figcaption{position:absolute;left:0;right:0;bottom:0;padding:34px 16px 12px;font:500 14px var(--sans);color:#fff;background:linear-gradient(to top,rgba(12,19,25,.85),rgba(12,19,25,0))}
@media(max-width:600px){.gallery{grid-template-columns:repeat(2,1fr);gap:10px}.gallery figure.wide{aspect-ratio:4/3}}

.contact{text-align:center}
.contact .sub{margin-inline:auto}
.contact .hero-actions{justify-content:center}
.contact h2{font-size:clamp(36px,6vw,64px)}
.foot{border-top:1px solid var(--line);padding:26px 0;font-size:14.5px;color:var(--mute);background:rgba(12,19,25,.9)}
.foot .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

.reveal{opacity:0;transform:translateY(14px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

@media(max-width:900px){
  .hero-grid,.split{grid-template-columns:1fr}
  .portrait{order:-1;width:220px;margin:10px 0 24px}
  .cards.three,.cards.two{grid-template-columns:1fr}
  .lab{grid-template-columns:1fr}
  .lab-controls{border-right:0;border-bottom:1px solid var(--line)}
  .readouts{grid-template-columns:1fr 1fr}
  .readouts>div:last-child{grid-column:1/-1}
  .card.split{display:block}
  .card.split .fig{margin:-28px -28px 22px;border-right:0;border-bottom:1px solid var(--line);display:block}
  .card.split .fig .frame{display:block}
  .card.split .fig img{height:340px}
  .card.split.rev .fig{margin:22px -28px -28px;border-left:0;border-top:1px solid var(--line)}
  .fig.wip img{height:auto;margin-top:-4.5%}
  .cards.four{grid-template-columns:repeat(2,1fr)}
  .burger{display:block}
  nav{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:rgba(12,19,25,.98);padding:10px 24px 20px;display:none;border-bottom:1px solid var(--line)}
  nav.open{display:flex}
  nav a{padding:12px 0}
  nav .cta{text-align:center;margin-top:8px}
  .proj{grid-template-columns:1fr;gap:12px;padding:28px 0}
  .proj-meta{display:flex;gap:14px;align-items:center}
  .proj-meta time{margin-top:0}
  .pubs li{grid-template-columns:1fr;gap:4px}
  section{padding:70px 0}
}
@media(max-width:520px){.cards.four{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}html{scroll-behavior:auto}}