:root {
  --ink: #14221f;
  --muted: #60706c;
  --green-1000: #041b17;
  --green-950: #072d27;
  --green-900: #0b3d35;
  --green-700: #176f61;
  --green-500: #20a084;
  --lime: #d0eb77;
  --lime-strong: #c4e45d;
  --paper: #f4f6f2;
  --surface: #ffffff;
  --surface-soft: #edf2ee;
  --line: #d9e2dc;
  --danger: #b42318;
  --success: #087443;
  --shadow-sm: 0 8px 24px rgba(7,45,39,.07);
  --shadow-lg: 0 28px 70px rgba(7,45,39,.14);
  --radius-sm: 12px;
  --radius: 22px;
  --radius-lg: 32px;
  --container: 1180px;
  --header-height: 76px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Tahoma, "Leelawadee UI", Arial, sans-serif; font-size: 16px; line-height: 1.68; text-rendering: optimizeLegibility; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--lime-strong); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 1000; left: 1rem; top: -5rem; padding: .75rem 1rem; color: white; background: var(--green-1000); border-radius: 8px; }
.skip-link:focus { top: 1rem; }
h1,h2,h3,p { margin-top: 0; }
h1,h2,h3 { text-wrap: balance; }
p { text-wrap: pretty; }

.site-header { position: fixed; z-index: 100; inset: 0 0 auto; color: white; background: rgba(4,27,23,.88); border-bottom: 1px solid rgba(255,255,255,.12); backdrop-filter: blur(18px) saturate(120%); }
.nav-shell { width: min(calc(100% - 40px), var(--container)); min-height: var(--header-height); margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .78rem; line-height: 1.05; }
.brand-mark { width: 43px; height: 43px; display: grid; place-items: center; color: var(--green-1000); background: var(--lime); border-radius: 12px 12px 12px 4px; font-size: 1.3rem; font-weight: 800; transform: rotate(-2deg); }
.brand-mark > span { transform: rotate(2deg); }
.brand strong,.brand small { display: block; }
.brand strong { font-size: .93rem; letter-spacing: .14em; }
.brand small { margin-top: .28rem; opacity: .68; font-size: .65rem; letter-spacing: .1em; }
.nav-menu { display: flex; align-items: center; gap: 1.65rem; font-size: .88rem; }
.nav-menu > a { position: relative; }
.nav-menu > a:not(.nav-login) { padding: .5rem 0; color: rgba(255,255,255,.75); }
.nav-menu > a:not(.nav-login)::after { content:""; position:absolute; left:0; right:100%; bottom:.15rem; height:2px; background:var(--lime); transition:right .2s; }
.nav-menu > a:hover,.nav-menu > a.is-active { color:white; }
.nav-menu > a:hover::after,.nav-menu > a.is-active::after { right:0; }
.nav-login { padding: .68rem 1rem; border: 1px solid rgba(255,255,255,.24); border-radius: 11px; background: rgba(255,255,255,.06); }
.nav-login:hover { background: rgba(255,255,255,.12); }
.menu-toggle { display:none; width:44px; height:44px; color:white; background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.15); border-radius:11px; cursor:pointer; }

.hero { min-height: 810px; position: relative; display: grid; align-items: center; color:white; background:var(--green-1000); overflow:hidden; isolation:isolate; }
.hero::after { content:""; position:absolute; z-index:1; right:-12vw; bottom:-24vw; width:46vw; height:46vw; border:1px solid rgba(208,235,119,.2); border-radius:50%; box-shadow:0 0 0 9vw rgba(208,235,119,.035),0 0 0 18vw rgba(208,235,119,.025); pointer-events:none; }
.hero-media { position:absolute; inset:0; }
.hero-media img { width:100%; height:100%; object-fit:cover; }
.hero-overlay { position:absolute; inset:0; background:linear-gradient(90deg,rgba(4,27,23,.97) 0%,rgba(4,27,23,.86) 48%,rgba(4,27,23,.28) 100%),linear-gradient(0deg,rgba(4,27,23,.35),transparent 45%); }
.hero-content { position:relative; z-index:2; width:min(calc(100% - 40px),var(--container)); margin:var(--header-height) auto 0; padding:6rem 0 3rem; }
.eyebrow { margin:0 0 1rem; color:var(--lime); font-size:.72rem; font-weight:800; letter-spacing:.2em; }
.eyebrow.dark { color:var(--green-700); }
h1 { max-width:920px; margin-bottom:1.5rem; font-size:clamp(2.6rem,6.2vw,5.35rem); line-height:1.08; letter-spacing:-.045em; }
h1 span { color:var(--lime); }
.hero-lead { max-width:700px; margin-bottom:2rem; color:rgba(255,255,255,.75); font-size:clamp(1rem,2vw,1.18rem); }
.hero-actions { display:flex; flex-wrap:wrap; gap:.8rem; }
.btn { min-height:52px; display:inline-flex; align-items:center; justify-content:center; gap:.7rem; padding:.82rem 1.2rem; border-radius:12px; font-weight:700; border:1px solid transparent; transition:transform .2s,background .2s,border-color .2s; cursor:pointer; }
.btn:hover { transform:translateY(-2px); }
.btn-primary { color:var(--green-1000); background:var(--lime); }
.btn-primary:hover { background:var(--lime-strong); }
.btn-ghost { color:white; background:rgba(255,255,255,.08); border-color:rgba(255,255,255,.2); }
.btn-ghost:hover { background:rgba(255,255,255,.14); }
.hero-stats { width:min(840px,100%); margin:4.5rem 0 0; display:grid; grid-template-columns:repeat(3,1fr); border-top:1px solid rgba(255,255,255,.18); }
.hero-stats div { padding:1.25rem 1.5rem 0 0; }
.hero-stats dt { color:white; font-size:1.18rem; font-weight:800; }
.hero-stats dd { margin:.15rem 0 0; color:rgba(255,255,255,.55); font-size:.78rem; }

.section { width:min(calc(100% - 40px),var(--container)); margin:auto; padding:7.5rem 0; }
.section-heading { display:grid; grid-template-columns:1.25fr .75fr; gap:3rem; align-items:end; margin-bottom:3.25rem; }
h2 { margin-bottom:1rem; font-size:clamp(2rem,4.2vw,3.45rem); line-height:1.16; letter-spacing:-.035em; }
.section-heading h2 { margin-bottom:0; }
.section-heading > p { max-width:500px; margin-bottom:.35rem; color:var(--muted); }
.service-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:1.2rem; }
.service-card { overflow:hidden; background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); transition:transform .25s,box-shadow .25s,border-color .25s; }
.service-card:hover { transform:translateY(-5px); box-shadow:var(--shadow-lg); border-color:#c5d3cb; }
.service-image { height:226px; display:block; overflow:hidden; background:var(--surface-soft); }
.service-image img { width:100%; height:100%; object-fit:cover; transition:transform .55s; }
.service-card:hover img { transform:scale(1.035); }
.service-body { position:relative; display:flex; flex-direction:column; min-height:330px; padding:1.65rem; }
.service-number { position:absolute; right:1.65rem; top:1.65rem; color:#7a8985; font-size:.75rem; font-weight:800; letter-spacing:.14em; }
.service-icon { display:block; margin-bottom:1.25rem; color:var(--green-700); font-size:.7rem; font-weight:800; letter-spacing:.18em; }
.service-card h3 { margin-bottom:.8rem; font-size:1.28rem; line-height:1.35; }
.service-card p { margin-bottom:1rem; color:var(--muted); font-size:.9rem; }
.service-tags { display:flex; flex-wrap:wrap; gap:.4rem; margin:0; padding:0; list-style:none; }
.service-tags li { padding:.28rem .55rem; color:#46605a; background:var(--surface-soft); border-radius:999px; font-size:.7rem; font-weight:700; }
.service-cta { margin-top:auto; padding-top:1.35rem; color:var(--green-700); font-size:.88rem; font-weight:800; border-top:1px solid var(--line); }
.service-cta span { display:inline-block; transition:transform .2s; }
.service-cta:hover span { transform:translateX(4px); }

.standards { display:grid; grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr); min-height:680px; color:white; background:var(--green-950); }
.standards-image { min-height:540px; display:block; overflow:hidden; background:var(--green-900); }
.standards-image img { width:100%; height:100%; object-fit:cover; }
.standards-content { max-width:700px; align-self:center; padding:5.5rem clamp(2rem,6vw,6rem); }
.standards-content > p:not(.eyebrow):not(.standards-kicker) { color:rgba(255,255,255,.68); }
.standards-kicker { margin:2rem 0 .3rem; color:var(--lime); font-size:.75rem; font-weight:800; letter-spacing:.08em; text-transform:uppercase; }
.check-list { margin:0; padding:0; list-style:none; counter-reset:steps; }
.check-list li { counter-increment:steps; display:grid; grid-template-columns:44px 1fr; gap:1rem; align-items:start; padding:1.1rem 0; border-top:1px solid rgba(255,255,255,.13); color:rgba(255,255,255,.72); }
.check-list li::before { content:"0" counter(steps); width:36px; height:36px; display:grid; place-items:center; color:var(--green-1000); background:var(--lime); border-radius:10px 10px 10px 3px; font-size:.72rem; font-weight:900; }
.check-icon { display:none; }
.check-list strong { display:block; color:white; font-weight:700; }

.contact { display:grid; grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr); gap:clamp(2.5rem,6vw,5rem); align-items:start; }
.contact-intro { position:sticky; top:110px; }
.contact-intro > p:not(.eyebrow):not(.contact-assurance) { color:var(--muted); }
.contact-methods { display:grid; gap:.7rem; margin-top:1.7rem; }
.contact-method { display:grid; grid-template-columns:1fr auto; gap:.12rem 1rem; align-items:center; padding:1rem 0; border-top:1px solid var(--line); }
.contact-method-label { grid-column:1; color:var(--muted); font-size:.74rem; }
.contact-method strong { grid-column:1; font-size:.94rem; overflow-wrap:anywhere; }
.contact-method > span:last-child { grid-column:2; grid-row:1 / span 2; color:var(--green-700); font-weight:900; transition:transform .2s; }
.contact-method:hover > span:last-child { transform:translateX(4px); }
.contact-assurance { margin-top:1.25rem; padding-left:1rem; color:var(--muted); border-left:3px solid var(--lime-strong); font-size:.78rem; }
.contact-form { padding:clamp(1.25rem,3vw,2.1rem); background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow-sm); }
.form-head { display:flex; justify-content:space-between; gap:1rem; align-items:start; margin-bottom:1.4rem; padding-bottom:1.2rem; border-bottom:1px solid var(--line); }
.form-head h3 { margin:0; font-size:1.3rem; }
.form-head > p { margin:.2rem 0 0; color:var(--muted); font-size:.72rem; white-space:nowrap; }
.form-step { margin:0 0 .3rem; color:var(--green-700); font-size:.68rem; font-weight:800; letter-spacing:.16em; }
.form-grid { display:grid; grid-template-columns:1fr 1fr; gap:.95rem 1rem; }
.field { min-width:0; }
.field-wide { grid-column:1/-1; }
.field label { display:block; margin-bottom:.38rem; font-weight:700; font-size:.86rem; }
.field input,.field select,.field textarea { width:100%; padding:.82rem .9rem; color:var(--ink); background:#fff; border:1px solid #abbab4; border-radius:10px; font:inherit; line-height:1.4; transition:border-color .2s,box-shadow .2s,background .2s; }
.field input::placeholder,.field textarea::placeholder { color:#84918d; }
.field input:hover,.field select:hover,.field textarea:hover { border-color:#83968f; }
.field input:focus,.field select:focus,.field textarea:focus { border-color:var(--green-700); outline:0; box-shadow:0 0 0 3px rgba(32,160,132,.16); }
.field textarea { resize:vertical; min-height:145px; }
.field [aria-invalid="true"] { border-color:var(--danger); background:#fffafa; }
.field-error { min-height:1.2rem; display:block; margin-top:.22rem; color:var(--danger); font-size:.75rem; }
.checkbox-label { display:grid!important; grid-template-columns:auto 1fr; gap:.65rem; align-items:start; font-weight:400!important; color:#465651; }
.checkbox-label input { width:18px; height:18px; margin-top:.25rem; accent-color:var(--green-700); }
.honeypot { position:absolute!important; left:-10000px!important; width:1px!important; height:1px!important; overflow:hidden!important; }
.form-actions { display:flex; flex-wrap:wrap; align-items:center; gap:1rem; margin-top:.55rem; }
.submit-btn { border:0; }
.submit-btn:disabled { opacity:.68; cursor:wait; transform:none; }
.submit-spinner { display:none; width:18px; height:18px; border:2px solid rgba(4,27,23,.28); border-top-color:var(--green-1000); border-radius:50%; animation:spin .7s linear infinite; }
.submit-btn.is-loading .submit-spinner { display:inline-block; }
.form-status { flex:1; min-width:220px; margin:0; padding:.65rem 0; font-size:.84rem; font-weight:700; }
.form-status.is-success { color:var(--success); }
.form-status.is-error { color:var(--danger); }
.form-note { margin:1rem 0 0; padding-top:1rem; color:var(--muted); border-top:1px solid var(--line); font-size:.74rem; }
@keyframes spin { to { transform:rotate(360deg); } }

.footer { color:rgba(255,255,255,.65); background:var(--green-1000); }
.footer-main,.footer-bottom { width:min(calc(100% - 40px),var(--container)); margin:auto; display:grid; align-items:center; }
.footer-main { grid-template-columns:1fr 2fr auto; gap:3rem; padding:3.7rem 0; }
.footer-brand { color:white; }
.footer address { margin:0; font-style:normal; font-size:.8rem; }
.social-link { width:44px; height:44px; display:grid; place-items:center; border:1px solid rgba(255,255,255,.2); border-radius:50%; transition:background .2s,border-color .2s; }
.social-link:hover { background:rgba(255,255,255,.1); border-color:rgba(255,255,255,.4); }
.footer-bottom { grid-template-columns:1fr auto; padding:1.25rem 0; border-top:1px solid rgba(255,255,255,.1); font-size:.74rem; }
.to-top { position:fixed; z-index:50; right:1.2rem; bottom:1.2rem; width:44px; height:44px; display:grid; place-items:center; color:var(--green-1000); background:var(--lime); border:0; border-radius:50%; box-shadow:var(--shadow-lg); opacity:0; visibility:hidden; transform:translateY(10px); transition:.2s; cursor:pointer; }
.to-top.is-visible { opacity:1; visibility:visible; transform:translateY(0); }

#main-content,#services,#standards,#contact,#contact-form,#service-solar,#service-chemical,#service-sludge { scroll-margin-top:96px; }
body.menu-open { overflow:hidden; }

@media (max-width:900px) {
  .menu-toggle { display:grid; place-items:center; }
  .nav-menu { position:absolute; inset:var(--header-height) 0 auto; display:none; flex-direction:column; align-items:stretch; gap:0; padding:.8rem 20px 1.25rem; color:white; background:rgba(4,27,23,.98); border-top:1px solid rgba(255,255,255,.1); box-shadow:0 22px 50px rgba(0,0,0,.2); }
  .nav-menu.is-open { display:flex; }
  .nav-menu a { padding:.85rem 0; }
  .nav-menu > a:not(.nav-login)::after { display:none; }
  .nav-login { margin-top:.45rem; padding:.82rem 1rem!important; text-align:center; }
  .service-grid { grid-template-columns:1fr 1fr; }
  .service-card:last-child { grid-column:1/-1; }
  .standards { grid-template-columns:1fr; }
  .standards-image { min-height:430px; }
  .contact { grid-template-columns:1fr; }
  .contact-intro { position:static; }
  .contact-methods { grid-template-columns:1fr 1fr; }
}
@media (max-width:620px) {
  :root { --header-height:68px; }
  .nav-shell { width:calc(100% - 32px); }
  .brand-mark { width:38px; height:38px; }
  .brand small { display:none; }
  .nav-menu { padding-inline:16px; }
  .hero { min-height:760px; }
  .hero::after { width:85vw; height:85vw; right:-42vw; bottom:-20vw; }
  .hero-content { width:calc(100% - 32px); padding:4.5rem 0 2.5rem; }
  h1 { font-size:clamp(2.35rem,11vw,3.45rem); }
  .hero-actions { flex-direction:column; align-items:stretch; }
  .hero-stats { margin-top:3rem; grid-template-columns:1fr; }
  .hero-stats div { display:grid; grid-template-columns:86px 1fr; align-items:baseline; padding:.72rem 0; border-bottom:1px solid rgba(255,255,255,.1); }
  .hero-stats dd { margin:0; }
  .section { width:calc(100% - 32px); padding:5.25rem 0; }
  .section-heading { grid-template-columns:1fr; gap:1rem; margin-bottom:2rem; }
  .service-grid { grid-template-columns:1fr; }
  .service-card:last-child { grid-column:auto; }
  .service-image { height:205px; }
  .service-body { min-height:310px; }
  .standards-image { min-height:320px; }
  .standards-content { padding:4.3rem 1rem; }
  .contact-methods { grid-template-columns:1fr; }
  .contact-form { padding:1rem; border-radius:16px; }
  .form-head { display:block; }
  .form-head > p { margin-top:.5rem; }
  .form-grid { grid-template-columns:1fr; }
  .field-wide { grid-column:auto; }
  .form-actions,.submit-btn { width:100%; }
  .form-status { min-width:0; }
  .footer-main { grid-template-columns:1fr; gap:1.5rem; padding:3rem 0; }
  .footer-bottom { grid-template-columns:1fr; gap:.5rem; }
}
@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior:auto; }
  *,*::before,*::after { animation-duration:.01ms!important; transition-duration:.01ms!important; }
}