:root{--ink:#14233a;--muted:#4a5a70;--line:#e3e8ef;--soft:#f5f8fb;--accent:#0a7fc2;--accent2:#00b8a9;--warn:#fff4d6;--warnline:#e8c766}
*{box-sizing:border-box}
html{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);line-height:1.6;font-size:17px}
body{margin:0;background:#fff}
a{color:var(--accent)}
.preview-banner{background:var(--warn);border-bottom:1px solid var(--warnline);text-align:center;font-size:.85rem;padding:.45rem 1rem;font-weight:600;letter-spacing:.02em}
header.site{border-bottom:1px solid var(--line)}
.wrap{max-width:1040px;margin:0 auto;padding:0 1.5rem}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 0;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--ink);font-weight:700}
.brand img{height:30px;width:auto}
.brand small{display:block;font-weight:400;color:var(--muted);font-size:.75rem}
.nav ul{list-style:none;display:flex;gap:1.1rem;margin:0;padding:0;flex-wrap:wrap;font-size:.92rem}
.nav a{text-decoration:none;color:var(--muted)}
.nav a[aria-current=page]{color:var(--ink);font-weight:600;border-bottom:2px solid var(--accent2)}
main section{padding:3.2rem 0;border-bottom:1px solid var(--line)}
main section:last-child{border-bottom:0}
h1{font-size:2.3rem;line-height:1.2;margin:.2rem 0 1rem;max-width:22ch}
h2{font-size:1.5rem;margin:0 0 .8rem}
h3{font-size:1.1rem;margin:1.2rem 0 .4rem}
p{max-width:68ch;margin:.4rem 0 .9rem}
.lead{font-size:1.2rem;color:var(--muted);max-width:60ch}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;color:var(--accent2);font-weight:700}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:.75rem 1.3rem;border-radius:6px;font-weight:600;border:0;font-size:1rem;cursor:pointer}
.grid{display:grid;gap:1.4rem;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{border:1px solid var(--line);border-radius:10px;padding:1.2rem 1.3rem;background:#fff}
.card h3{margin-top:0}
.soft{background:var(--soft)}
.pending{background:#fff0f0;border:1px dashed #d9534f;color:#a12a26;padding:0 .3rem;border-radius:4px;font-size:.9em;font-weight:600;white-space:normal}
figure{margin:1.5rem 0}
figure img,figure svg{max-width:100%;height:auto;display:block}
figcaption{font-size:.85rem;color:var(--muted);margin-top:.5rem;max-width:80ch}
table{border-collapse:collapse;width:100%;font-size:.92rem;margin:1rem 0}
th,td{border-bottom:1px solid var(--line);text-align:left;padding:.6rem .5rem;vertical-align:top}
th{background:var(--soft);font-weight:600}
.asof{display:inline-block;background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:.15rem .7rem;font-size:.82rem;color:var(--muted)}
.sources{font-size:.85rem;color:var(--muted)}
.sources li{margin:.25rem 0}
ol.steps{counter-reset:s;list-style:none;padding:0;display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
ol.steps li{border-top:3px solid var(--accent2);padding-top:.6rem}
ol.steps li strong{display:block}
form .field{margin:0 0 1rem;max-width:560px}
label{display:block;font-weight:600;font-size:.92rem;margin-bottom:.3rem}
input,select,textarea{width:100%;padding:.6rem .7rem;border:1px solid #c9d3df;border-radius:6px;font:inherit}
textarea{min-height:140px}
.note{font-size:.85rem;color:var(--muted)}
footer.site{border-top:1px solid var(--line);padding:2rem 0 3rem;font-size:.85rem;color:var(--muted)}
footer.site a{color:var(--muted)}
.diagram{width:100%;max-width:1000px}
.split{display:grid;grid-template-columns:1fr 1fr;min-height:78vh}
.split a{display:flex;flex-direction:column;justify-content:center;padding:3rem;text-decoration:none;color:var(--ink)}
.split .left{background:linear-gradient(160deg,#e9f7fb,#d7eef7)}
.split .right{background:linear-gradient(160deg,#f3f5f8,#e4e9f0)}
.split h2{font-size:2rem}
.split span.go{margin-top:1rem;font-weight:600;color:var(--accent)}
@media(max-width:720px){h1{font-size:1.8rem}.split{grid-template-columns:1fr}}
@media print{.nav ul{display:none} main section{break-inside:avoid}}
.stat{border-left:5px solid var(--accent2);background:#fff;padding:1.2rem 1.4rem;border-radius:0 10px 10px 0;margin:1rem 0 1.4rem}
.stat .big{display:block;font-size:2.1rem;line-height:1.15;font-weight:800;color:var(--ink)}
.stat p{margin:.5rem 0 0;color:var(--muted)}
.stat .sub2{font-size:.95rem}
.kpis{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin:1.2rem 0}
.kpi{border:1px solid var(--line);border-radius:10px;padding:1rem 1.1rem;background:#fff}
.kpi b{display:block;font-size:1.6rem;line-height:1.2;color:var(--accent)}
.kpi span{display:block;font-size:.92rem;color:var(--muted);margin-top:.3rem}
.cmp{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin:.4rem 0}
.cmp div{border:1px solid var(--line);border-radius:10px;padding:.8rem 1rem;background:#fff;font-size:.95rem}
.cmp div.ours{border-color:#9fd9d3;background:#f1fbfa}
.cmp small{display:block;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:.72rem;margin-bottom:.2rem}
.cmprow{margin:1.1rem 0}.cmprow h3{margin:0 0 .3rem;font-size:1rem}
td.num,th.num{text-align:right;white-space:nowrap}
.callout{border:1px solid var(--line);background:#fff;border-radius:10px;padding:1.1rem 1.3rem;margin:1.4rem 0}
.callout p{margin:.2rem 0 .7rem}
@media(max-width:720px){.cmp{grid-template-columns:1fr}}
.btn-desal{font-size:.82rem;padding:.4rem .8rem;white-space:nowrap;background:#14233a;margin-left:1rem}
.btn-desal:hover{background:#0a7fc2}
footer.site .btn-desal{margin-left:0;color:#fff}
.nav a.btn-desal,footer.site a.btn-desal{color:#fff;background:#14233a;border-radius:6px;padding:.35rem .75rem;font-size:.8rem;font-weight:600;text-decoration:none;border:0;margin-left:.4rem}
.nav a.btn-desal:hover,footer.site a.btn-desal:hover{background:#0a7fc2}
.desal-wrap{display:inline-flex;flex-direction:column;align-items:flex-start;gap:.25rem}
.desal-cap{display:block;font-size:.72rem;line-height:1.25;color:var(--muted);max-width:16rem}
.nav .desal-wrap .btn-desal{margin-left:0}
.nav li.desal-li{margin-left:.4rem}
.split .desal-cap{font-size:.85rem;margin:.4rem 0 .2rem;color:inherit;opacity:.85;max-width:none}
@media(max-width:720px){.nav li.desal-li{flex-basis:100%;margin:.4rem 0 0}.desal-cap{max-width:none}}
.nav ul{align-items:center}
.nav .desal-cap{max-width:10.5rem;font-size:.68rem}
footer.site .desal-wrap a.btn-desal{margin-left:0}
/* v6 imagery */
main section.hero{position:relative;background-color:#0b3a66;background-image:linear-gradient(90deg,rgba(8,28,52,.82) 0%,rgba(8,28,52,.62) 55%,rgba(8,28,52,.30) 100%),url(img/water-1920.jpg);background-image:linear-gradient(90deg,rgba(8,28,52,.82) 0%,rgba(8,28,52,.62) 55%,rgba(8,28,52,.30) 100%),image-set(url(img/water-1920.webp) type("image/webp"),url(img/water-1920.jpg) type("image/jpeg"));background-size:cover;background-position:center 60%;color:#fff;padding:4.5rem 0;border-bottom:0}
main section.hero h1,main section.hero .lead{color:#fff}
main section.hero .eyebrow{color:#7fe3da}
main section.hero .note,main section.hero .note a{color:#dbe9f5}
main section.hero .hero-link{color:#fff;font-weight:600}
main section.hero .stat{color:var(--ink)}
main section.hero-slim{padding:3.4rem 0}
main section.water-band{background-color:#eaf4fb;background-image:linear-gradient(rgba(240,248,253,.90),rgba(240,248,253,.94)),image-set(url(img/water-960.webp) type("image/webp"),url(img/water-1920.jpg) type("image/jpeg"));background-size:cover;background-position:center}
figure.photo{margin:1.2rem 0}
figure.photo img{width:100%;max-width:900px;height:auto;border-radius:10px;display:block}
.legal h3{margin-top:1.4rem;font-size:1.05rem}
.legal{max-width:78ch}
@media (max-width:720px){main section.hero{padding:3rem 0;background-image:linear-gradient(rgba(8,28,52,.78),rgba(8,28,52,.70)),image-set(url(img/water-960.webp) type("image/webp"),url(img/water-1920.jpg) type("image/jpeg"))}}

/* v8 figures */
.fig8{margin:1.2rem 0}.fig8 img,.fig8 svg{width:100%;height:auto;display:block;border-radius:8px;background:#fff}.fig8 figcaption{font-size:.9rem;color:var(--muted);margin-top:.45rem;line-height:1.45}.fig8 h3{margin:0 0 .5rem}
.figs8{display:grid;gap:1.4rem}.figs8-2{grid-template-columns:repeat(2,1fr)}.figs8-4{grid-template-columns:repeat(4,1fr)}.figs8-1{grid-template-columns:1fr}.figs8-31{grid-template-columns:3fr 1fr;align-items:start}.figs8-31 .fig8:last-child img{max-width:240px}
#lasting-need .fig8{background:#fff;border:1px solid var(--line);border-radius:10px;padding:1rem}
@media(max-width:720px){.figs8-2,.figs8-31{grid-template-columns:1fr}.figs8-4{grid-template-columns:repeat(2,1fr)}}

/* ===== v12 visual polish (no content changes) ===== */
:root{--navy:#0b2340;--shadow:0 1px 2px rgba(11,35,64,.06),0 8px 28px rgba(11,35,64,.08);--radius:14px}
html{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
main section{padding:4.4rem 0}
main section.soft{background:linear-gradient(180deg,#f6f9fc 0%,#eef4f9 100%)}
h1{font-size:clamp(2rem,4.2vw,2.9rem);letter-spacing:-.02em;line-height:1.12;font-weight:750}
h2{font-size:clamp(1.45rem,2.6vw,1.95rem);letter-spacing:-.012em;line-height:1.22;margin-bottom:1rem;font-weight:700}
h3{letter-spacing:-.005em}
.eyebrow{letter-spacing:.14em;text-transform:uppercase;font-size:.78rem;font-weight:700}
.lead{line-height:1.55}
main p{max-width:72ch}
/* cards, kpis, callouts */
.card,.kpi,.callout{border:1px solid #e4ebf3;border-radius:var(--radius);box-shadow:var(--shadow);background:#fff}
.card{padding:1.4rem 1.5rem}
.kpi{padding:1.2rem 1.3rem;border-top:3px solid var(--accent2)}
.kpi b{font-size:1.9rem;letter-spacing:-.02em;color:var(--navy)}
.btn{border-radius:999px;box-shadow:0 4px 14px rgba(10,127,194,.28);transition:transform .15s ease,box-shadow .15s ease}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(10,127,194,.32)}
/* charts and figures: styled frames, data untouched */
.fig8{background:#fff;border:1px solid #e4ebf3;border-radius:var(--radius);box-shadow:var(--shadow);padding:1rem 1rem .9rem}
.fig8 img,.fig8 svg{border-radius:10px}
.fig8 figcaption{font-size:.86rem;margin-top:.7rem;padding-top:.6rem;border-top:1px solid #edf2f7}
.fig8 h3{font-size:1rem;color:var(--navy)}
svg.diagram{background:#fff;border:1px solid #e4ebf3;border-radius:var(--radius);box-shadow:var(--shadow);padding:14px}
.fig8 svg.diagram{border:0;box-shadow:none;padding:0}
svg.diagram text{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
figure.photo img{border-radius:var(--radius);box-shadow:var(--shadow)}
/* tables */
table{border-collapse:separate;border-spacing:0;background:#fff;border:1px solid #e4ebf3;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
th{background:var(--navy);color:#fff;font-weight:600;font-size:.86rem;letter-spacing:.02em;border-bottom:0}
th,td{padding:.75rem .9rem}
tbody tr:nth-child(even) td{background:#f7fafc}
tr:last-child td{border-bottom:0}
/* photo heroes */
main section.hero-photo{background-color:#0b2340;background-size:cover;background-position:center}
main section.hero a{color:#fff}
main section.hero p{color:#e6eff8}
main section.hero .stat p,main section.hero .stat{color:var(--ink)}
main section.hero .stat a{color:var(--accent)}
main section.bg-clarifiers{background-image:linear-gradient(90deg,rgba(8,28,52,.88) 0%,rgba(8,28,52,.70) 55%,rgba(8,28,52,.45) 100%),url(img/bg-clarifiers-960.webp)}
main section.bg-clarifier-aerial{background-image:linear-gradient(90deg,rgba(8,28,52,.88) 0%,rgba(8,28,52,.70) 55%,rgba(8,28,52,.45) 100%),url(img/bg-clarifier-aerial-960.webp)}
main section.bg-lab{background-image:linear-gradient(90deg,rgba(8,28,52,.90) 0%,rgba(8,28,52,.72) 55%,rgba(8,28,52,.45) 100%),url(img/bg-lab-960.webp)}
main section.bg-vessels{background-image:linear-gradient(90deg,rgba(8,28,52,.90) 0%,rgba(8,28,52,.74) 55%,rgba(8,28,52,.50) 100%),url(img/bg-vessels-960.webp)}
@media (min-width:1000px){
main section.bg-clarifiers{background-image:linear-gradient(90deg,rgba(8,28,52,.88) 0%,rgba(8,28,52,.70) 55%,rgba(8,28,52,.45) 100%),url(img/bg-clarifiers-1920.webp)}
main section.bg-clarifier-aerial{background-image:linear-gradient(90deg,rgba(8,28,52,.88) 0%,rgba(8,28,52,.70) 55%,rgba(8,28,52,.45) 100%),url(img/bg-clarifier-aerial-1920.webp)}
main section.bg-lab{background-image:linear-gradient(90deg,rgba(8,28,52,.90) 0%,rgba(8,28,52,.72) 55%,rgba(8,28,52,.45) 100%),url(img/bg-lab-1920.webp)}
main section.bg-vessels{background-image:linear-gradient(90deg,rgba(8,28,52,.90) 0%,rgba(8,28,52,.74) 55%,rgba(8,28,52,.50) 100%),url(img/bg-vessels-1920.webp)}
}
main section.hero-slim{padding:5.2rem 0 4.6rem}
/* photo band (dark overlay divider) */
main section.photo-band{background-color:#0b2340;background-size:cover;background-position:center;color:#e6eff8;padding:5rem 0;border-bottom:0}
main section.photo-band h2{color:#fff}
main section.photo-band a{color:#7fe3da;font-weight:600}
/* split text + side image */
.tsplit{display:grid;grid-template-columns:1.15fr .85fr;gap:2.4rem;align-items:center}
.side-img{margin:0}
.side-img img{width:100%;height:auto;display:block;border-radius:var(--radius);box-shadow:0 12px 36px rgba(11,35,64,.18)}
@media (max-width:820px){.tsplit{grid-template-columns:1fr}}
/* home hero: moving water (CSS only) */
main section.hero-motion{background-image:none;background-color:#0b2340;overflow:hidden;isolation:isolate;padding:6.5rem 0 6rem}
main section.hero-motion::before{content:"";position:absolute;inset:-8%;z-index:-2;
 background-image:url(img/water-960.webp);background-size:cover;background-position:center;
 animation:fl-drift 26s ease-in-out infinite alternate;will-change:transform}
@media (min-width:1000px){main section.hero-motion::before{background-image:url(img/water-1920.webp)}}
main section.hero-motion::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
 background-image:
  linear-gradient(90deg,rgba(8,28,52,.84) 0%,rgba(8,28,52,.64) 55%,rgba(8,28,52,.34) 100%),
  linear-gradient(105deg,rgba(255,255,255,0) 30%,rgba(190,235,255,.16) 45%,rgba(255,255,255,0) 60%),
  radial-gradient(ellipse at 30% 60%,rgba(127,227,218,.10),rgba(127,227,218,0) 60%);
 background-size:100% 100%,250% 100%,180% 180%;
 animation:fl-shimmer 11s linear infinite}
@keyframes fl-drift{0%{transform:scale(1.04) translate3d(0,0,0)}50%{transform:scale(1.10) translate3d(-2.2%,1.2%,0)}100%{transform:scale(1.06) translate3d(2%,-1.4%,0)}}
@keyframes fl-shimmer{0%{background-position:0 0,130% 0,0% 50%}50%{background-position:0 0,-30% 0,100% 50%}100%{background-position:0 0,-130% 0,0% 50%}}
@media (prefers-reduced-motion:reduce){
 main section.hero-motion::before,main section.hero-motion::after{animation:none}
 main section.hero-motion::before{transform:none;inset:0}
 .btn{transition:none}
}
/* scroll-in fades (only when JS runs and motion allowed) */
.rv main section:not(.hero) > .wrap{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.rv main section:not(.hero) > .wrap.in{opacity:1;transform:none}
@media print{
 .rv main section > .wrap{opacity:1!important;transform:none!important}
 main section.hero-motion::before,main section.hero-motion::after{animation:none}
 .fig8,svg.diagram,table,.card,.kpi{box-shadow:none}
}
main section.photo-band .stat{color:var(--ink)}
main section.photo-band .stat a{color:var(--accent)}

#model .figs8-2{grid-template-columns:2fr 3fr;align-items:start}
@media(max-width:720px){#model .figs8-2{grid-template-columns:1fr}}

/* v15 */
.asof{display:block;width:max-content;margin:.35rem auto 0;text-align:center}
p.kpi-note{margin:-.2rem 0 1.2rem;font-weight:600;color:var(--navy);max-width:72ch}

/* v16 */
.desal-cap,.nav .desal-cap{white-space:nowrap;max-width:none}
.why-grid .card h3{font-size:1.3rem}
@media(max-width:720px){.desal-cap,.nav .desal-cap{white-space:normal}}