:root{
--paper:#F6F8F7;--paper-2:#EEF3F2;--panel:#EAF1EF;--ink:#0E2A2E;--ink-soft:#244A4E;
--teal:#0B7A6E;--teal-d:#075E55;--blue:#0E5A86;--amber:#A66A12;
--line:#DCE6E3;--line-2:#C7D6D2;--muted:#56706F;--card:#FFFFFF;--hero:#0E2A2E;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"IBM Plex Sans",system-ui,sans-serif;font-size:17.5px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--teal-d);text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%;display:block}
h1,h2,h3,h4,.wordmark b,.hero h1,.sec-h h2,.path-card h3,.filter-card h3,.crow h3,.rel-row a{font-family:"Zilla Slab",Georgia,serif;font-weight:700;letter-spacing:-.01em;line-height:1.15;color:var(--ink)}
.mono,.eyebrow,.util,.sec-n,.tag,.reftable th,.reftable .lim,.byline,.crow .dt,.src-strip,.bar-val,.toc b,.factbox caption,.factbox th,.author-card b,.chip,.filter-card .rm,figcaption,.count{font-family:"IBM Plex Mono",ui-monospace,monospace}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}
.narrow{max-width:740px;margin:0 auto;padding:0 22px}

/* top utility */
.util{background:var(--ink);color:#bcd3d0;font-size:11px;letter-spacing:.04em}
.util .wrap{display:flex;justify-content:space-between;gap:12px;padding:7px 22px}
.util a{color:#d6e7e4}
@media(max-width:620px){.util .s2{display:none}}
/* masthead flat */
.masthead{background:var(--paper);border-bottom:1px solid var(--ink);position:sticky;top:0;z-index:50}
.masthead .wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 22px}
.wordmark{display:flex;align-items:center;gap:10px;color:var(--ink)}.wordmark:hover{text-decoration:none}
.wordmark .mk{width:30px;height:30px;flex:none}
.wordmark b{font-size:22px;letter-spacing:-.02em}
.wordmark i{font-style:normal;font-family:"IBM Plex Mono",monospace;font-size:9px;letter-spacing:.2em;text-transform:uppercase;color:var(--teal-d);display:block}
.nav{display:flex;gap:26px;align-items:center}
.nav a{color:var(--ink);font-size:15px;font-weight:500}
.nav a:hover{color:var(--teal-d);text-decoration:none}
.nav .cta{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.04em;text-transform:uppercase;border:1px solid var(--ink);padding:8px 13px;border-radius:2px}
.nav .cta:hover{background:var(--ink);color:#fff}
@media(max-width:860px){.nav a:not(.cta){display:none}}

/* hero */
.hero{position:relative;background:var(--hero);color:#e9f1ef;overflow:hidden;border-bottom:3px solid var(--teal)}
.hero .contour{position:absolute;inset:0;width:100%;height:100%;opacity:.5;pointer-events:none}
.hero .wrap{position:relative;padding:62px 22px 56px;max-width:1120px}
.hero .eyebrow{color:var(--teal);font-size:12px;letter-spacing:.2em;text-transform:uppercase}
.hero h1{color:#fff;font-size:clamp(38px,5.4vw,62px);margin:14px 0 12px;max-width:16ch;line-height:1.05}
.hero .sub{color:#aecbc6;font-size:19px;max-width:54ch;margin:0 0 26px}
.searchbar{display:flex;max-width:560px;background:#fff;border-radius:3px;overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.searchbar input{flex:1;border:0;padding:16px 18px;font-family:"IBM Plex Sans",sans-serif;font-size:16px;color:var(--ink);outline:none}
.searchbar button{border:0;background:var(--teal);color:#fff;font-family:"IBM Plex Mono",monospace;font-size:13px;letter-spacing:.06em;text-transform:uppercase;padding:0 22px;cursor:pointer}
.searchbar button:hover{background:var(--teal-d)}
.searchnote{font-size:12.5px;color:#8fb0ab;margin:11px 0 0}
.chips{display:flex;gap:10px;margin:20px 0 0;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(255,255,255,.28);color:#dcebe8;color:#dcebe8;border-radius:2px;padding:9px 14px;font-size:12px;letter-spacing:.04em;text-transform:uppercase}
.chip:hover{background:rgba(255,255,255,.08);text-decoration:none;color:#fff}
.chip b{color:#fff;font-family:"Zilla Slab",serif}

/* sources strip */
.src-strip{background:var(--paper);border-bottom:1px solid var(--line)}
.src-strip .wrap{display:flex;align-items:center;justify-content:center;gap:10px 26px;flex-wrap:wrap;padding:15px 22px;font-size:12px;letter-spacing:.04em;color:var(--muted)}
.src-strip b{color:var(--ink)}
.src-strip .agency{color:var(--ink);border-left:1px solid var(--line-2);padding-left:26px}
.src-strip .agency:first-of-type{border-left:0;padding-left:0}

/* section header numbered */
.sec-h{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;border-bottom:2px solid var(--ink);padding-bottom:10px;margin:56px 0 0}
.sec-h .l{display:flex;align-items:baseline;gap:14px}
.sec-n{font-size:13px;color:var(--teal-d);letter-spacing:.05em}
.sec-h h2{font-size:26px}
.sec-h a{font-size:11.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--teal-d);font-family:"IBM Plex Mono",monospace}
.sec-sub{color:var(--muted);font-size:16px;margin:14px 0 18px;max-width:74ch}

/* reference table */
.reftable-wrap{border:1px solid var(--line-2);border-radius:4px;overflow:hidden;margin-top:18px}
.reftable{width:100%;border-collapse:collapse;font-size:15.5px;background:#fff}
.reftable th{background:var(--ink);color:#cfe0dd;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;text-align:left;padding:12px 16px;font-weight:500}
.reftable td{padding:13px 16px;border-top:1px solid var(--line);vertical-align:middle}
.reftable tr:hover td{background:var(--paper-2)}
.reftable .nm{font-family:"Zilla Slab",serif;font-weight:600;font-size:17px}
.reftable .nm a{color:var(--ink)}
.reftable .cat{font-size:12px;color:var(--muted);font-family:"IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.04em}
.reftable .lim{font-size:13.5px;color:var(--blue)}
.reftable .goal{font-size:13.5px;color:var(--muted)}
.reftable .arrow{color:var(--teal-d);text-align:right;width:30px}
.count{font-size:12px;color:var(--muted);margin:10px 2px 0}
@media(max-width:680px){.reftable .goal,.reftable th.goal{display:none}}

/* water source chooser / paths */
.pathgrid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}
.path-card{display:block;border:1px solid var(--line-2);border-left:4px solid var(--teal);border-radius:4px;padding:22px 24px;background:#fff;transition:box-shadow .15s,transform .15s}
.path-card:hover{box-shadow:0 10px 26px rgba(14,42,46,.09);transform:translateY(-2px);text-decoration:none}
.path-card .k{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--teal-d)}
.path-card h3{font-size:22px;margin:8px 0 6px}
.path-card p{margin:0;color:var(--muted);font-size:15px}
@media(max-width:680px){.pathgrid{grid-template-columns:1fr}}

/* start list */
.startrow{display:grid;grid-template-columns:54px 1fr;gap:20px;padding:22px 0;border-bottom:1px solid var(--line)}
.startrow .num{font-family:"IBM Plex Mono",monospace;font-size:20px;color:var(--teal-d);padding-top:4px}
.startrow .ct{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.startrow h3{font-family:"Zilla Slab",serif;font-size:23px;margin:5px 0 5px}
.startrow h3 a{color:var(--ink)}
.startrow p{margin:0;color:var(--muted);font-size:16px}

/* filter comparison */
.filtergrid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}
.filter-card{border:1px solid var(--line-2);border-radius:4px;padding:18px;background:#fff;display:flex;flex-direction:column}
.filter-card h3{font-size:18px;margin:0 0 4px}
.filter-card .lvl{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--teal-d);margin-bottom:10px}
.filter-card ul{list-style:none;margin:0 0 14px;padding:0;font-size:13.5px;color:var(--ink-soft)}
.filter-card li{padding:3px 0 3px 16px;position:relative}
.filter-card li::before{content:"+";position:absolute;left:0;color:var(--teal)}
.filter-card .rm{margin-top:auto;font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--teal-d)}
@media(max-width:780px){.filtergrid{grid-template-columns:repeat(2,1fr)}}

/* cluster index lists */
.cols{display:grid;grid-template-columns:1fr 1fr;gap:0 44px;margin-top:6px}
@media(max-width:760px){.cols{grid-template-columns:1fr}}
.crow{padding:18px 0;border-bottom:1px solid var(--line)}
.crow .ct{font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--teal-d)}
.crow h3{font-size:19px;margin:5px 0 4px}.crow h3 a{color:var(--ink)}
.crow p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.5}
.crow .dt{display:block;font-size:11px;color:#8aa3a0;margin-top:7px}

/* closing band */
.endband{background:var(--ink);color:#cfe0dd;border-top:3px solid var(--teal);margin-top:58px}
.endband .wrap{padding:40px 22px}
.endband .k{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--teal)}
.endband h2{color:#fff;font-size:26px;margin:10px 0 8px;max-width:22ch}
.endband p{color:#a6c4bf;max-width:60ch;margin:0 0 16px}
.endband a{color:#fff;font-family:"IBM Plex Mono",monospace;font-size:13px;letter-spacing:.05em;text-transform:uppercase;border-bottom:2px solid var(--teal);padding-bottom:3px}

/* article */
.article{background:#fff;border-bottom:1px solid var(--line)}
.a-hero{background:var(--paper);border-bottom:1px solid var(--line)}
.a-hero .narrow{padding:32px 22px 26px}
.a-hero .crumb{font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--muted)}
.a-hero .crumb a{color:var(--muted)}
.a-hero .kick{display:inline-block;margin:16px 0 0;font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--teal-d);border-left:3px solid var(--teal);padding-left:10px}
.a-hero h1{font-family:"Zilla Slab",serif;font-size:clamp(30px,4.4vw,46px);margin:14px 0 14px;line-height:1.1}
.a-hero .dek{font-size:19px;color:var(--ink-soft);margin:0 0 18px;max-width:60ch}
.a-hero .byline{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.04em;color:var(--muted);text-transform:uppercase;border-top:1px solid var(--line);padding-top:13px}
.figbanner{max-width:980px;margin:0 auto;padding:0}
.figbanner img{width:100%;height:280px;object-fit:cover;border-bottom:1px solid var(--line)}
@media(max-width:600px){.figbanner img{height:180px}}
.prose{max-width:720px;margin:0 auto;padding:30px 22px 6px;font-size:18px}
.prose p,.prose ul,.prose ol{margin:0 0 18px}
.prose h2{font-family:"Zilla Slab",serif;font-size:26px;margin:36px 0 12px}
.prose h3{font-family:"Zilla Slab",serif;font-size:20px;margin:26px 0 8px}
.prose ul,.prose ol{padding-left:22px}.prose li{margin:6px 0}
.prose a{color:var(--teal-d);text-decoration:underline;text-decoration-color:#9ccbc4;text-underline-offset:2px}
.prose strong{color:var(--ink)}

/* toc */
.toc{border:1px solid var(--line-2);border-left:4px solid var(--teal);border-radius:3px;padding:18px 20px;margin:8px 0 26px;background:var(--paper)}
.toc b{display:block;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.toc ol{margin:0;padding:0;list-style:none;counter-reset:t;font-size:14.5px}
.toc li{counter-increment:t;padding:5px 0 5px 30px;position:relative}
.toc li::before{content:counter(t,decimal-leading-zero);position:absolute;left:0;color:var(--teal-d);font-family:"IBM Plex Mono",monospace;font-size:12px}
.toc a{color:var(--ink)}

/* callout/factbox/chart */
.callout{border-left:4px solid var(--teal);background:var(--panel);border-radius:0 4px 4px 0;padding:15px 18px;margin:24px 0;font-size:16.5px}
.callout.warn{border-left-color:var(--amber);background:#f8f1e3}
.callout b{font-family:"Zilla Slab",serif}
.factbox{border:1px solid var(--line-2);border-radius:4px;overflow:hidden;margin:26px 0}
.factbox table{width:100%;border-collapse:collapse;font-size:15px}
.factbox caption{caption-side:top;text-align:left;font-size:11px;letter-spacing:.08em;text-transform:uppercase;background:var(--ink);color:#fff;padding:11px 16px}
.factbox th,.factbox td{padding:10px 16px;border-top:1px solid var(--line);text-align:left;vertical-align:top}
.factbox th{background:var(--paper-2);font-size:11px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.factbox tr td:first-child{font-weight:600}
.chart{border:1px solid var(--line-2);border-radius:4px;padding:18px 18px 12px;margin:26px 0;background:#fff}
.chart .ct{font-family:"Zilla Slab",serif;font-weight:600;font-size:16px;margin-bottom:2px}
.chart .cs{font-size:12px;color:var(--muted);margin-bottom:14px}
.chart figcaption{font-size:11px;color:#8aa3a0;margin-top:8px}
.bar-row{display:grid;grid-template-columns:120px 1fr;gap:10px;align-items:center;margin:8px 0;font-size:13px}
.bar-row .lab{font-family:"IBM Plex Mono",monospace;color:var(--ink);text-align:right;font-size:12px}
.bar-track{background:var(--panel);border-radius:2px;height:24px;overflow:hidden}
.bar-fill{height:100%;background:var(--teal);border-radius:2px;display:flex;align-items:center}
.bar-val{font-size:11px;color:#fff;margin-left:9px;white-space:nowrap}

/* author + related */
.author-card{max-width:720px;margin:20px auto 0;padding:18px 20px;display:flex;gap:14px;align-items:flex-start;border:1px solid var(--line-2);border-radius:4px;background:var(--paper)}
.author-card .av{width:44px;height:44px;border-radius:3px;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-family:"IBM Plex Mono",monospace;font-weight:500;font-size:13px;flex:none}
.author-card b{font-size:12.5px}.author-card p{margin:5px 0 0;font-size:14px;color:var(--muted)}
.related{max-width:740px;margin:0 auto;padding:24px 22px 10px}
.rel-list{list-style:none;margin:0;padding:0}
.rel-row{padding:16px 0;border-top:1px solid var(--line)}
.rel-row a{font-size:18px;color:var(--ink)}
.rel-row p{margin:4px 0 0;color:var(--muted);font-size:14.5px}

/* footer */
.site-footer{background:var(--ink);color:#a4c0bc;margin-top:0}
.site-footer .wrap{padding:44px 22px 26px;display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:30px}
@media(max-width:700px){.site-footer .wrap{grid-template-columns:1fr}}
.site-footer .bm{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.site-footer .bm b{font-family:"Zilla Slab",serif;font-weight:700;font-size:21px;color:#fff}
.site-footer h4{color:#fff;font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;margin:0 0 12px}
.site-footer a{color:#a4c0bc}.site-footer a:hover{color:#fff}
.site-footer ul{list-style:none;margin:0;padding:0}.site-footer li{margin:8px 0;font-size:14.5px}
.site-footer p{font-size:14px;color:#8aa6a2;margin:0;max-width:42ch}
.foot-legal{border-top:1px solid #1c4045}.foot-legal .wrap{display:block;padding:15px 22px;font-family:"IBM Plex Mono",monospace;font-size:10.5px;color:#7c9794;max-width:1120px}