/* Field Notebook Modernism: URL-compatible standalone reference pages. */
:root{--ink:#123b3c;--basin:#0b5d5e;--deep:#063f40;--paper:#f6f1e7;--sand:#d5a65d;--mist:#dce9e4;--line:rgba(18,59,60,.18);--ease:cubic-bezier(.23,1,.32,1)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"IBM Plex Sans",Arial,sans-serif}a{color:inherit;text-decoration:none}.skip-link{position:fixed;z-index:30;top:-50px;left:20px;background:var(--sand);color:var(--deep);padding:10px 14px;font-weight:700;font-size:13px}.skip-link:focus{top:20px}.legacy-header{position:relative;z-index:10;min-height:80px;padding:0 5.1vw;display:flex;align-items:center;gap:28px;background:#fffdf8;border-bottom:1px solid var(--line)}.legacy-brand{display:flex;align-items:center;gap:10px;min-width:225px}.legacy-brand img{width:37px;height:37px;object-fit:contain}.legacy-brand span{display:grid;line-height:1}.legacy-brand strong{font-size:16px;letter-spacing:-.03em}.legacy-brand 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rgba(240,247,242,.035)}.legacy-hero:after{width:170px;height:170px;left:50%;bottom:-130px}.hero-rail{position:absolute;top:76px;left:5.1vw;width:72px;display:flex;flex-direction:column;gap:10px;color:rgba(255,255,255,.76);font-size:8px;font-weight:600;letter-spacing:.15em;line-height:1.4;text-transform:uppercase}.hero-rail i{display:block;width:1px;height:38px;background:var(--sand)}.legacy-hero-content{position:relative;z-index:1;max-width:770px}.legacy-kicker,.legacy-cta>p{display:flex;align-items:center;gap:8px;margin:0 0 11px;color:#dbece7;font-size:9px;font-weight:700;letter-spacing:.16em;text-transform:uppercase}.legacy-kicker span,.legacy-cta>p span{width:18px;height:1px;background:var(--sand)}.breadcrumb{display:flex;gap:7px;margin-bottom:17px;color:rgba(255,255,255,.68);font-size:11px}.breadcrumb a{text-decoration:underline;text-underline-offset:3px}.legacy-hero h1{max-width:780px;margin:0 0 17px;font-family:"DM Serif Display",Georgia,serif;font-size:clamp(2.8rem,5.35vw,5rem);font-weight:400;letter-spacing:-.052em;line-height:.95}.legacy-hero-content>p{max-width:630px;margin:0;color:rgba(255,255,255,.86);font-size:15px;line-height:1.67}.hero-code{position:absolute;right:5vw;bottom:25px;z-index:1;display:grid;gap:4px;color:rgba(255,255,255,.6);font-size:9px;font-weight:700;letter-spacing:.16em;text-align:right}.legacy-layout{display:grid;grid-template-columns:minmax(160px,.3fr) minmax(0,1fr);gap:clamp(44px,8vw,132px);max-width:1290px;margin:0 auto;padding:80px 6vw 103px}.legacy-aside{align-self:start;padding-top:6px;color:var(--basin)}.legacy-aside>p{margin:0 0 14px;color:var(--sand);font-size:9px;font-weight:700;letter-spacing:.15em;text-transform:uppercase}.legacy-aside>div{border-top:1px solid var(--line)}.legacy-aside>div a{display:flex;justify-content:space-between;gap:10px;padding:11px 0;border-bottom:1px solid var(--line);font-size:12px;font-weight:600;line-height:1.25}.legacy-aside b{font-size:13px;font-weight:500}.archive-link{display:flex;justify-content:space-between;margin-top:25px;padding-bottom:5px;border-bottom:1px solid var(--sand);font-size:12px;font-weight:700}.legacy-content{min-width:0;max-width:790px;font-size:16px;line-height:1.75}.legacy-content:before{content:"";display:block;width:38px;height:3px;margin-bottom:26px;background:var(--sand)}.legacy-content h1,.legacy-content h2,.legacy-content h3,.legacy-content h4{color:var(--ink);font-family:"DM Serif Display",Georgia,serif;font-weight:400;letter-spacing:-.03em;line-height:1.08}.legacy-content h1{font-size:clamp(2.1rem,3.3vw,3.25rem)}.legacy-content h2{margin:2.25em 0 .7em;font-size:clamp(1.8rem,2.7vw,2.55rem)}.legacy-content h3{margin:2em 0 .55em;font-size:1.65rem}.legacy-content h4{margin:1.5em 0 .4em;font-size:1.25rem}.legacy-content p{max-width:740px;margin:0 0 1.25em;color:#345758}.legacy-content a{color:var(--basin);font-weight:600;text-decoration:underline;text-decoration-color:var(--sand);text-underline-offset:4px}.legacy-content ul,.legacy-content ol{margin:0 0 1.5em;padding-left:1.3em;color:#345758}.legacy-content li{margin:.5em 0;padding-left:.16em}.legacy-content img{display:block;max-width:100%;height:auto;margin:1.75em auto;border:1px solid var(--line);background:#fff}.legacy-content table{width:100%!important;margin:1.8em 0;border-collapse:collapse;background:#fffdf9;color:#345758;font-size:14px;line-height:1.55}.legacy-content th,.legacy-content td{padding:12px;border:1px solid var(--line);vertical-align:top}.legacy-content th{background:#e8f0ec;color:var(--ink);font-weight:700}.legacy-content hr{height:1px;margin:2em 0;border:0;background:var(--line)}.legacy-content blockquote{max-width:680px;margin:2em 0;padding:0 0 0 22px;border-left:3px solid var(--sand);font-family:"DM Serif Display",Georgia,serif;font-size:1.45rem;line-height:1.2}.ad-region{width:100%;margin:2.4rem 0;padding:1rem 1.2rem 1.35rem;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#edf4f0}.ad-region-label{display:block;margin:0 0 .8rem;color:#607777;font-size:9px;font-weight:700;letter-spacing:.14em;text-transform:uppercase}.ad-region ins.adsbygoogle{display:block;min-height:90px}.ad-region:has(ins.adsbygoogle[data-ad-status="unfilled"]){display:none}.legacy-cta{padding:78px max(8vw,30px) 85px 16.2vw;background:var(--mist)}.legacy-cta h2{max-width:760px;margin:0 0 26px;font-family:"DM Serif Display",Georgia,serif;font-size:clamp(2.5rem,4.8vw,4.65rem);font-weight:400;letter-spacing:-.052em;line-height:.97}.legacy-cta a{display:inline-flex;padding:13px 17px;background:var(--basin);color:#fff;font-size:12px;font-weight:700;transition:transform .16s var(--ease),background .18s var(--ease)}.legacy-cta a:hover{background:var(--deep)}.legacy-cta a:active{transform:scale(.97)}.legacy-footer{min-height:94px;padding:25px 5.1vw;display:flex;align-items:center;justify-content:space-between;gap:25px;background:#073233;color:rgba(255,255,255,.78);font-size:10px;letter-spacing:.09em;text-transform:uppercase}.legacy-footer>div{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:.01em;text-transform:none}.legacy-footer img{width:28px;height:28px}.legacy-footer p{margin:0}.legacy-footer a{border-bottom:1px solid var(--sand);padding-bottom:4px}@media(max-width:1060px){.legacy-nav{gap:15px}.legacy-nav a{font-size:11px}}@media(max-width:900px){.legacy-header{min-height:72px;padding:0 6vw;justify-content:space-between}.legacy-nav,.legacy-contact{display:none}.legacy-brand{min-width:0}.legacy-menu-toggle{display:inline-grid;grid-template-columns:auto 20px;column-gap:8px;align-items:center;border:0;background:transparent;color:var(--ink);padding:9px 0;font:700 11px "IBM Plex Sans",Arial,sans-serif;letter-spacing:.1em;text-transform:uppercase}.legacy-menu-toggle i{grid-column:2;width:19px;height:1px;background:currentColor;transition:transform .18s var(--ease)}.legacy-menu-toggle i:first-of-type{grid-row:1;margin-bottom:7px}.legacy-menu-toggle i:last-of-type{grid-row:1;margin-top:7px}.legacy-menu-toggle[aria-expanded="true"] i:first-of-type{transform:translateY(4px) rotate(45deg)}.legacy-menu-toggle[aria-expanded="true"] i:last-of-type{transform:translateY(-4px) rotate(-45deg)}.legacy-mobile-nav{position:absolute;z-index:20;top:100%;left:0;right:0;display:none;grid-template-columns:repeat(2,minmax(0,1fr));padding:14px 6vw 22px;background:var(--deep);color:#fff;box-shadow:0 16px 35px rgba(5,51,52,.23)}.legacy-mobile-nav.is-open{display:grid}.legacy-mobile-nav a{display:grid;grid-template-columns:30px 1fr 15px;align-items:center;gap:6px;min-height:52px;padding:0 9px;border-bottom:1px solid rgba(255,255,255,.16);font-size:14px;font-weight:600}.legacy-mobile-nav a span{color:var(--sand);font-size:9px;letter-spacing:.14em}.legacy-mobile-nav a b{font-size:12px;font-weight:500}.legacy-hero{padding:68px 8vw 65px 14vw}.hero-rail{left:5vw}.legacy-layout{grid-template-columns:1fr;padding:63px 8vw 78px}.legacy-aside{display:none}.legacy-cta{padding:65px 8vw}.legacy-footer{padding:25px 8vw}}@media(max-width:560px){.legacy-header{min-height:67px}.legacy-brand img{width:31px;height:31px}.legacy-brand strong{font-size:14px}.legacy-mobile-nav{grid-template-columns:1fr;padding:10px 7vw 18px}.legacy-mobile-nav a{min-height:46px;padding:0}.legacy-hero{min-height:360px;padding:67px 7vw 54px}.hero-rail{display:none}.legacy-hero h1{font-size:clamp(2.75rem,12.2vw,3.9rem)}.legacy-hero-content>p{font-size:14px}.hero-code{right:7vw}.legacy-layout{padding:53px 7vw 66px}.legacy-content{font-size:15px}.legacy-content h2{font-size:2rem}.legacy-content table{display:block;overflow-x:auto}.legacy-cta{padding:58px 7vw}.legacy-cta h2{font-size:clamp(2.65rem,12vw,3.85rem)}.legacy-footer{display:grid;grid-template-columns:1fr;padding:27px 7vw;gap:13px}.legacy-footer p{line-height:1.5}}

/* Homepage content restoration: retain the original narrative and pathways in the Field Notebook system. */
.home-restored-intro{max-width:760px;margin:0 0 76px}.home-eyebrow{margin:0 0 12px!important;color:var(--sand)!important;font-size:9px!important;font-weight:700!important;letter-spacing:.15em;text-transform:uppercase}.home-restored-intro h2,.home-section-heading h2,.home-processes h2,.home-reference-strip h2{margin:.1em 0 .65em;font-family:"DM Serif Display",Georgia,serif;font-size:clamp(2.15rem,4vw,3.7rem);font-weight:400;letter-spacing:-.045em;line-height:1}.home-restored-intro p:not(.home-eyebrow){max-width:735px;margin:0 0 1.05em}.home-restored-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:0 0 88px;background:var(--line);border:1px solid var(--line)}.home-section-heading{grid-column:1/-1;padding:31px 34px 26px;background:var(--paper)}.home-section-heading h2{margin-bottom:0;font-size:clamp(2rem,3.25vw,3rem)}.home-route-card{display:flex;min-height:238px;flex-direction:column;padding:29px 33px;background:#fffdf8;transition:background .18s var(--ease),transform .18s var(--ease)}.home-route-card:hover{background:var(--mist);transform:translateY(-3px)}.home-route-card p{margin:0 0 18px;color:var(--sand);font-size:9px;font-weight:700;letter-spacing:.15em;text-transform:uppercase}.home-route-card h3{margin:0 0 12px;font-family:"DM Serif Display",Georgia,serif;font-size:clamp(1.65rem,2.6vw,2.25rem);font-weight:400;letter-spacing:-.035em;line-height:1.02}.home-route-card span{max-width:410px;color:#466566;font-size:14px;line-height:1.6}.home-route-card b{margin-top:auto;padding-top:21px;color:var(--basin);font-size:11px;letter-spacing:.06em;text-transform:uppercase}.home-processes{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:clamp(38px,7vw,100px);margin:0 0 78px;padding:45px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.home-processes h2{font-size:clamp(2rem,3.3vw,3.1rem)}.home-processes>div>p:last-child{max-width:460px;margin:0}.home-process-links{display:grid;align-content:start;border-top:1px solid var(--line)}.home-process-links a{display:grid;grid-template-columns:1fr auto;gap:20px;padding:15px 0;border-bottom:1px solid var(--line);font-size:15px;font-weight:600;text-decoration:none!important}.home-process-links a b{color:var(--sand);font-size:10px;letter-spacing:.1em}.home-reference-strip{display:grid;grid-template-columns:1fr 1fr;gap:54px;margin:0 -3vw;padding:48px 3vw;background:var(--mist)}.home-reference-strip h2{font-size:clamp(1.9rem,3vw,2.75rem)}.home-reference-links{display:grid;align-content:start;border-top:1px solid var(--line)}.home-reference-links a{padding:12px 0;border-bottom:1px solid var(--line);font-size:13px;font-weight:700;text-decoration:none!important}.home-reading-note{max-width:720px;margin:34px 0 0!important;font-size:13px!important}@media(max-width:760px){.home-restored-intro{margin-bottom:57px}.home-restored-grid{grid-template-columns:1fr;margin-bottom:63px}.home-section-heading{padding:27px 25px}.home-route-card{min-height:205px;padding:25px}.home-processes{grid-template-columns:1fr;gap:28px;margin-bottom:58px;padding:34px 0}.home-reference-strip{grid-template-columns:1fr;gap:20px;margin:0;padding:35px 25px}.home-reference-strip h2{margin-bottom:0}.home-process-links a{font-size:14px}}
.legacy-brand img{content:url("media/wastewater-engineering-group-logo.png");width:168px!important;height:auto!important;max-height:54px;object-fit:contain}.legacy-brand span{display:none}.legacy-footer img{content:url("media/wastewater-engineering-group-logo.png");width:142px!important;height:auto!important;object-fit:contain}.legacy-footer span{display:none}
/* Header transition: muted eucalyptus bridges the supplied cyan mark to the Basin Teal content system. */
.legacy-header{background:linear-gradient(102deg,#07575e 0%,#117982 54%,#0a5962 100%)!important;border-bottom:3px solid #d1a456!important;box-shadow:0 6px 18px rgba(4,46,51,.24)}.legacy-nav a{color:#f6f4eb!important}.legacy-nav a:hover{color:#d8b46f!important}.legacy-contact{color:#fffdf5!important;border-bottom-color:#d8b46f!important}.legacy-menu-toggle{color:#fffdf5!important}
@media(max-width:560px){.legacy-brand img{width:142px!important;height:auto!important}.legacy-footer img{width:128px!important;height:auto!important}}