:root {
  --ink: #092f35;
  --ink-deep: #052429;
  --ink-soft: #17474c;
  --green: #61c36d;
  --green-bright: #95df68;
  --green-pale: #eaf8df;
  --aqua: #39c1c8;
  --blue: #1786a5;
  --ice: #ecf8f8;
  --white: #ffffff;
  --paper: #f6f9f6;
  --muted: #637578;
  --line: rgba(9, 47, 53, .12);
  --shadow: 0 24px 70px rgba(5, 36, 41, .12);
  --radius-lg: 32px;
  --radius-md: 22px;
  --radius-sm: 14px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
img, svg { display: block; max-width: 100%; }
::selection { background: var(--green-bright); color: var(--ink-deep); }

.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.section { padding: 112px 0; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 9999; background: var(--white); color: var(--ink); padding: 12px 18px; border-radius: 8px; box-shadow: var(--shadow); }
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: 82px;
  transition: background .25s ease, box-shadow .25s ease, height .25s ease;
}
.site-header.scrolled { height: 72px; background: rgba(5, 36, 41, .92); backdrop-filter: blur(18px); box-shadow: 0 10px 30px rgba(0,0,0,.12); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--white); flex: 0 0 auto; }
.brand-mark { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 13px; background: linear-gradient(145deg, var(--green-bright), var(--aqua)); box-shadow: 0 8px 22px rgba(57, 193, 200, .2); }
.brand-mark svg { width: 32px; height: 32px; fill: var(--ink-deep); }
.brand-mark .mark-line, .brand-mark .mark-sun { fill: none; stroke: var(--white); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.05; }
.brand-copy strong { font-size: 1.06rem; letter-spacing: .08em; }
.brand-copy small { margin-top: 5px; font-size: .7rem; color: rgba(255,255,255,.7); letter-spacing: .08em; text-transform: uppercase; }
.main-nav { display: flex; align-items: center; gap: 25px; color: rgba(255,255,255,.82); font-size: .88rem; font-weight: 650; }
.main-nav a { transition: color .2s ease; }
.main-nav a:hover { color: var(--green-bright); }
.main-nav .nav-cta { padding: 11px 17px; border: 1px solid rgba(255,255,255,.3); border-radius: 99px; color: var(--white); }
.main-nav .nav-cta:hover { border-color: var(--green-bright); background: var(--green-bright); color: var(--ink-deep); }
.menu-toggle { display: none; width: 45px; height: 45px; border: 1px solid rgba(255,255,255,.2); border-radius: 12px; background: transparent; padding: 11px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 2px; background: var(--white); transition: .25s ease; }

.hero {
  position: relative;
  min-height: 800px;
  padding: 155px 0 115px;
  color: var(--white);
  background:
    radial-gradient(circle at 72% 25%, rgba(57,193,200,.18), transparent 28%),
    radial-gradient(circle at 20% 70%, rgba(149,223,104,.12), transparent 28%),
    linear-gradient(135deg, #041f24 0%, #07363a 55%, #0c4a4f 100%);
  overflow: hidden;
}
.hero-grid { position: absolute; inset: 0; opacity: .08; background-image: linear-gradient(rgba(255,255,255,.3) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.3) 1px, transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(to bottom, black, transparent 90%); }
.hero::before { content: ""; position: absolute; width: 480px; height: 480px; right: -180px; top: 60px; border: 1px solid rgba(255,255,255,.08); border-radius: 50%; box-shadow: 0 0 0 70px rgba(255,255,255,.025), 0 0 0 150px rgba(255,255,255,.018); }
.hero-layout { position: relative; z-index: 2; display: grid; grid-template-columns: 1.03fr .97fr; align-items: center; gap: 70px; }
.hero-copy h1 { margin: 18px 0 24px; max-width: 760px; font-size: clamp(3.25rem, 6vw, 5.7rem); line-height: .98; letter-spacing: -.058em; font-weight: 760; }
.hero-copy h1 em { font-style: normal; color: var(--green-bright); }
.hero-copy h1 em:last-child { color: #66dce0; }
.hero-copy > p { max-width: 670px; margin: 0; color: rgba(255,255,255,.72); font-size: 1.08rem; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: var(--green-bright); font-size: .75rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.eyebrow > span { width: 28px; height: 2px; background: currentColor; border-radius: 99px; }
.eyebrow.dark { color: var(--blue); }
.eyebrow.light { color: var(--green-bright); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; min-height: 55px; padding: 0 23px; border-radius: 99px; font-weight: 800; font-size: .91rem; transition: transform .2s ease, background .2s ease, color .2s ease, box-shadow .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--ink-deep); background: var(--green-bright); box-shadow: 0 12px 30px rgba(149,223,104,.2); }
.button-primary:hover { background: var(--white); }
.button-secondary { color: var(--white); border: 1px solid rgba(255,255,255,.28); background: rgba(255,255,255,.04); }
.button-secondary:hover { border-color: rgba(255,255,255,.6); background: rgba(255,255,255,.09); }
.button-dark { color: var(--white); background: var(--ink); }
.button-dark:hover { background: var(--blue); box-shadow: 0 14px 28px rgba(23,134,165,.2); }
.button-white { color: var(--ink-deep); background: var(--white); }
.button-white:hover { background: var(--green-bright); }
.hero-scope { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 38px; }
.hero-scope span { padding: 7px 12px; border: 1px solid rgba(255,255,255,.14); border-radius: 99px; color: rgba(255,255,255,.62); font-size: .76rem; }

.hero-visual { position: relative; min-height: 540px; }
.visual-orbit { position: absolute; border: 1px solid rgba(125,226,195,.19); border-radius: 50%; }
.orbit-one { width: 430px; height: 430px; right: 0; top: 40px; }
.orbit-two { width: 320px; height: 320px; right: 55px; top: 95px; border-style: dashed; animation: spin 30s linear infinite; }
.floating-card { position: absolute; border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.075); backdrop-filter: blur(20px); box-shadow: 0 25px 70px rgba(0,0,0,.2); }
.solar-card { width: min(360px, 80%); right: 25px; top: 60px; padding: 25px; border-radius: 28px; transform: rotate(2deg); }
.card-kicker { color: var(--green-bright); font-size: .74rem; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.solar-card > strong { display: block; margin-top: 19px; font-size: 1.1rem; }
.panel-illustration { position: relative; height: 210px; margin-top: 14px; border-radius: 20px; overflow: hidden; background: linear-gradient(180deg, #2385a0 0%, #7fd5cd 62%, #aacd7b 63%, #547849 100%); }
.panel-illustration::before { content: ""; position: absolute; width: 160px; height: 40px; left: -20px; bottom: 35px; border-radius: 50%; background: rgba(4,46,52,.25); transform: rotate(-7deg); }
.sun { position: absolute; width: 44px; height: 44px; right: 22px; top: 22px; border-radius: 50%; background: #f6f3b2; box-shadow: 0 0 30px rgba(246,243,178,.6); }
.panel-grid { position: absolute; left: 50%; bottom: 35px; display: grid; grid-template-columns: repeat(3, 1fr); width: 190px; height: 105px; padding: 5px; gap: 4px; background: #163f56; border: 4px solid #d7e3df; transform: translateX(-50%) skewY(-5deg); box-shadow: 0 15px 22px rgba(0,0,0,.22); }
.panel-grid i { background: linear-gradient(135deg, #2a6d89, #123c58); border: 1px solid rgba(255,255,255,.16); }
.panel-base { position: absolute; width: 110px; height: 35px; left: 50%; bottom: 10px; border-left: 5px solid #d5dfda; border-right: 5px solid #d5dfda; transform: translateX(-50%); }
.water-card { left: 0; bottom: 78px; display: flex; align-items: center; gap: 14px; padding: 15px 18px; border-radius: 18px; animation: float 5s ease-in-out infinite; }
.water-icon { width: 43px; height: 43px; display: grid; place-items: center; border-radius: 13px; background: #64d7d8; }
.water-icon svg { width: 30px; fill: rgba(255,255,255,.18); stroke: var(--ink-deep); stroke-width: 2; stroke-linecap: round; }
.water-card span, .metric-card small { display: block; color: rgba(255,255,255,.58); font-size: .7rem; }
.water-card strong, .metric-card strong { display: block; font-size: .9rem; }
.metric-card { right: 2px; bottom: 17px; display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: 17px; animation: float 5s ease-in-out 1s infinite; }
.metric-icon { width: 37px; height: 37px; display: grid; place-items: center; border-radius: 12px; color: var(--ink-deep); background: var(--green-bright); font-weight: 900; }
.hero-wave { position: absolute; left: -5%; right: -5%; bottom: -64px; height: 120px; border-radius: 50% 50% 0 0; background: var(--paper); }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

.value-strip { position: relative; z-index: 4; margin-top: -20px; }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--white); border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow); overflow: hidden; }
.value-grid article { display: flex; align-items: center; gap: 14px; min-height: 104px; padding: 22px; border-right: 1px solid var(--line); }
.value-grid article:last-child { border-right: 0; }
.value-grid article > span { color: var(--green); font-weight: 900; font-size: .75rem; }
.value-grid strong, .value-grid small { display: block; }
.value-grid strong { font-size: .91rem; }
.value-grid small { margin-top: 3px; color: var(--muted); font-size: .75rem; }

.section-heading { display: grid; grid-template-columns: 1.2fr .8fr; gap: 90px; align-items: end; margin-bottom: 46px; }
.section-heading.compact { margin-bottom: 40px; }
.section-heading h2, .content-panel h2, .water-intro h2, .solution-content h2, .engineering-copy h2, .faq-heading h2, .cta-inner h2 { margin: 13px 0 0; font-size: clamp(2.3rem, 4vw, 4.2rem); line-height: 1.06; letter-spacing: -.045em; }
.section-heading p, .water-intro p { margin: 0; color: var(--muted); }
.services { padding-top: 100px; }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.service-card { position: relative; min-height: 390px; padding: 30px 26px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--white); overflow: hidden; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.service-card::before { content: ""; position: absolute; width: 140px; height: 140px; right: -65px; top: -65px; border-radius: 50%; background: var(--green-pale); transition: transform .35s ease; }
.service-card:hover { transform: translateY(-8px); border-color: rgba(97,195,109,.45); box-shadow: var(--shadow); }
.service-card:hover::before { transform: scale(1.3); }
.service-number { position: absolute; right: 22px; top: 18px; z-index: 1; color: rgba(9,47,53,.22); font-weight: 900; font-size: .75rem; }
.service-icon { width: 56px; height: 56px; display: grid; place-items: center; margin-bottom: 62px; border-radius: 17px; background: var(--green-pale); }
.service-icon svg { width: 34px; fill: none; stroke: var(--ink); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.service-card h3 { margin: 0 0 12px; font-size: 1.23rem; line-height: 1.25; }
.service-card p { margin: 0; color: var(--muted); font-size: .88rem; }
.text-link { margin-top: auto; padding-top: 24px; color: var(--blue); font-size: .82rem; font-weight: 800; }
.text-link b { margin-left: 5px; }
.service-card-wide { grid-column: span 4; min-height: auto; display: grid; grid-template-columns: 70px 1fr auto; align-items: center; gap: 28px; }
.service-card-wide .service-icon { margin: 0; }
.service-card-wide .text-link { margin: 0; padding: 0; }

.solar-section { background: var(--white); }
.split-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: center; }
.solar-visual { position: relative; min-height: 620px; border-radius: var(--radius-lg); background: linear-gradient(180deg, #2e9abc 0%, #a9ded4 57%, #8bbd75 58%, #4c7750 100%); overflow: hidden; box-shadow: var(--shadow); }
.energy-sky span { position: absolute; height: 14px; border-radius: 50%; background: rgba(255,255,255,.35); filter: blur(4px); }
.energy-sky span:nth-child(1){ width: 110px; left: 40px; top: 100px; }
.energy-sky span:nth-child(2){ width: 150px; right: 40px; top: 160px; }
.energy-sky span:nth-child(3){ width: 80px; left: 130px; top: 210px; }
.energy-sun { position: absolute; width: 88px; height: 88px; right: 60px; top: 65px; border-radius: 50%; background: #faf3b2; box-shadow: 0 0 55px rgba(250,243,178,.7); }
.energy-panels { position: absolute; left: 50%; bottom: 110px; display: flex; gap: 8px; width: 78%; transform: translateX(-50%) perspective(700px) rotateX(5deg) rotateZ(-4deg); }
.large-panel { flex: 1; height: 210px; border: 7px solid #dfe9e4; background-color: #14546c; background-image: linear-gradient(rgba(255,255,255,.2) 2px, transparent 2px), linear-gradient(90deg, rgba(255,255,255,.2) 2px, transparent 2px); background-size: 25% 25%; box-shadow: 0 30px 35px rgba(0,0,0,.24); }
.energy-caption { position: absolute; left: 24px; right: 24px; bottom: 24px; padding: 18px 20px; border-radius: 16px; color: var(--white); background: rgba(5,36,41,.74); backdrop-filter: blur(10px); }
.energy-caption strong, .energy-caption span { display: block; }
.energy-caption span { color: rgba(255,255,255,.65); font-size: .76rem; }
.content-panel > p, .engineering-copy > p, .faq-heading > p { color: var(--muted); }
.feature-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin: 32px 0; }
.check-list { list-style: none; padding: 0; margin: 0; }
.check-list li { position: relative; padding: 10px 0 10px 30px; border-bottom: 1px solid var(--line); font-size: .9rem; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 10px; width: 19px; height: 19px; display: grid; place-items: center; border-radius: 50%; color: var(--ink-deep); background: var(--green-bright); font-size: .68rem; font-weight: 900; }

.process-section { background: var(--paper); }
.process-grid { display: grid; grid-template-columns: repeat(6, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.process-item { position: relative; min-height: 230px; padding: 34px 22px 28px; border-right: 1px solid var(--line); }
.process-item:last-child { border-right: 0; }
.process-item > span { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; color: var(--ink-deep); background: var(--green-bright); font-size: .72rem; font-weight: 900; }
.process-item h3 { margin: 46px 0 8px; font-size: 1rem; }
.process-item p { margin: 0; color: var(--muted); font-size: .78rem; line-height: 1.55; }

.water-solutions { position: relative; color: var(--white); background: linear-gradient(140deg, #07333a, #082a31); overflow: hidden; }
.water-solutions::before { content: ""; position: absolute; width: 650px; height: 650px; left: -230px; bottom: -400px; border-radius: 50%; background: rgba(57,193,200,.11); box-shadow: 0 0 0 90px rgba(57,193,200,.04), 0 0 0 180px rgba(57,193,200,.02); }
.water-intro { position: relative; display: grid; grid-template-columns: 1.2fr .8fr; gap: 90px; align-items: end; margin-bottom: 45px; }
.water-intro p { color: rgba(255,255,255,.62); }
.water-layout { position: relative; display: grid; grid-template-columns: .95fr 1.05fr; gap: 70px; align-items: center; }
.pump-diagram { position: relative; min-height: 470px; border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius-lg); background: radial-gradient(circle at center, rgba(57,193,200,.13), transparent 60%); overflow: hidden; }
.pipe { position: absolute; border: 13px solid #6bd4d1; opacity: .65; }
.pipe-one { width: 210px; height: 210px; left: -70px; top: 55px; border-radius: 0 0 60px 0; border-left: 0; border-top: 0; }
.pipe-two { width: 230px; height: 200px; right: -80px; bottom: 40px; border-radius: 60px 0 0; border-right: 0; border-bottom: 0; }
.pump-body { position: absolute; left: 50%; top: 50%; width: 180px; height: 180px; border: 16px solid #83dcd5; border-radius: 50%; transform: translate(-50%,-50%); box-shadow: inset 0 0 0 15px rgba(255,255,255,.08), 0 25px 60px rgba(0,0,0,.24); }
.pump-body::before { content: ""; position: absolute; width: 52px; height: 52px; left: 50%; top: 50%; border-radius: 50%; background: var(--green-bright); transform: translate(-50%,-50%); }
.pump-body span, .pump-body i { position: absolute; left: 50%; top: 50%; width: 12px; height: 67px; border-radius: 99px; background: rgba(255,255,255,.65); transform-origin: center 0; }
.pump-body span { transform: rotate(0deg) translate(-50%, -3px); }
.pump-body i { transform: rotate(120deg) translate(-50%, -3px); }
.pump-body::after { content: ""; position: absolute; left: 50%; top: 50%; width: 12px; height: 67px; border-radius: 99px; background: rgba(255,255,255,.65); transform-origin: center 0; transform: rotate(240deg) translate(-50%, -3px); }
.water-rings i { position: absolute; left: 50%; top: 50%; border: 1px solid rgba(57,193,200,.2); border-radius: 50%; transform: translate(-50%,-50%); }
.water-rings i:nth-child(1){ width: 250px; height: 250px; }
.water-rings i:nth-child(2){ width: 330px; height: 330px; }
.water-rings i:nth-child(3){ width: 410px; height: 410px; }
.diagram-label { position: absolute; padding: 7px 11px; border-radius: 99px; color: var(--ink-deep); background: var(--green-bright); font-size: .68rem; font-weight: 850; }
.label-a { right: 28px; top: 90px; }.label-b { left: 32px; bottom: 70px; }.label-c { right: 75px; bottom: 38px; }
.accordion-item { border-bottom: 1px solid rgba(255,255,255,.14); }
.accordion-item button { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 25px 0; border: 0; color: inherit; background: transparent; text-align: left; cursor: pointer; font-size: 1.05rem; font-weight: 800; }
.accordion-item button i { position: relative; flex: 0 0 auto; width: 22px; height: 22px; }
.accordion-item button i::before, .accordion-item button i::after { content: ""; position: absolute; left: 50%; top: 50%; width: 14px; height: 2px; background: currentColor; transform: translate(-50%,-50%); transition: transform .2s ease; }
.accordion-item button i::after { transform: translate(-50%,-50%) rotate(90deg); }
.accordion-item.open button i::after { transform: translate(-50%,-50%) rotate(0); }
.accordion-content { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s ease; }
.accordion-content > div { overflow: hidden; }
.accordion-item.open .accordion-content { grid-template-rows: 1fr; }
.accordion-content p { margin: 0 0 25px; color: rgba(255,255,255,.6); }
.application-tags { position: relative; display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-top: 34px; }
.application-tags > span { padding: 8px 12px; border: 1px solid rgba(255,255,255,.17); border-radius: 99px; color: rgba(255,255,255,.68); font-size: .76rem; }
.application-tags a { margin-left: auto; color: var(--green-bright); font-weight: 800; font-size: .85rem; }

.dual-solutions { background: var(--white); }
.dual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.solution-panel { min-height: 750px; display: flex; flex-direction: column; border-radius: var(--radius-lg); overflow: hidden; }
.pool-panel { background: #e9f7ef; }
.treatment-panel { color: var(--white); background: #0b6072; }
.solution-art { position: relative; height: 330px; overflow: hidden; }
.pool-art { background: linear-gradient(180deg, #79d8e2, #d8f5e4 60%, #f0e4c4 61%); }
.pool-sun { position: absolute; width: 70px; height: 70px; right: 55px; top: 40px; border-radius: 50%; background: #fff4b5; box-shadow: 0 0 35px rgba(255,244,181,.6); }
.pool-lines { position: absolute; left: 0; right: 0; bottom: 0; height: 140px; background: repeating-radial-gradient(ellipse at center, rgba(255,255,255,.55) 0 3px, transparent 4px 23px), linear-gradient(#30aec7,#1d8fab); clip-path: polygon(0 30%, 100% 5%, 100% 100%, 0 100%); }
.pool-deck { position: absolute; left: 0; right: 0; bottom: 105px; height: 45px; background: #e9d6af; transform: skewY(-4deg); }
.treatment-art { background: radial-gradient(circle at 70% 20%, rgba(103,225,218,.4), transparent 25%), linear-gradient(150deg,#0c7185,#073b49); }
.filter-unit { position: absolute; left: 50%; bottom: 32px; display: flex; align-items: flex-end; gap: 12px; transform: translateX(-50%); }
.filter-unit i { width: 62px; height: 190px; border: 5px solid rgba(255,255,255,.68); border-radius: 30px; background: linear-gradient(to top, rgba(149,223,104,.7) 0 28%, rgba(57,193,200,.55) 29% 64%, rgba(255,255,255,.14) 65%); box-shadow: 0 18px 35px rgba(0,0,0,.2); }
.filter-unit i:nth-child(2) { height: 230px; }
.drop { position: absolute; width: 52px; height: 52px; right: 35px; top: 50px; border-radius: 55% 45% 55% 45%; background: rgba(255,255,255,.7); transform: rotate(45deg); }
.bubble { position: absolute; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; }.b1 { width: 38px; height: 38px; left: 48px; top: 80px; }.b2 { width: 20px; height: 20px; left: 95px; top: 45px; }
.solution-content { flex: 1; padding: 38px 40px 42px; display: flex; flex-direction: column; }
.solution-content h2 { font-size: clamp(2rem, 3.1vw, 3.4rem); }
.mini-list { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; list-style: none; padding: 0; margin: 28px 0 34px; }
.mini-list li { position: relative; padding-left: 18px; color: var(--ink-soft); font-size: .85rem; }
.mini-list li::before { content: ""; position: absolute; width: 7px; height: 7px; left: 0; top: .63em; border-radius: 50%; background: var(--green); }
.light-list li { color: rgba(255,255,255,.78); }.light-list li::before { background: var(--green-bright); }
.solution-content > a { margin-top: auto; font-weight: 850; font-size: .87rem; }
.solution-content > a span { margin-left: 8px; }

.engineering { background: var(--paper); }
.engineering-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 85px; align-items: center; }
.engineering-copy .button { margin-top: 20px; }
.engineering-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.engineering-grid article { min-height: 160px; padding: 25px; border: 1px solid var(--line); border-radius: 18px; background: var(--white); transition: transform .2s ease, border-color .2s ease; }
.engineering-grid article:hover { transform: translateY(-4px); border-color: var(--green); }
.engineering-grid span { color: var(--blue); font-size: .7rem; font-weight: 900; }
.engineering-grid h3 { margin: 37px 0 0; font-size: 1rem; line-height: 1.35; }

.brands { background: var(--white); }
.brand-cloud { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.brand-cloud span { min-height: 100px; display: grid; place-items: center; padding: 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); color: var(--ink-soft); font-weight: 820; text-align: center; transition: background .2s ease, color .2s ease; }
.brand-cloud span:hover { color: var(--ink-deep); background: var(--green-pale); }

.faq-section { background: var(--paper); }
.faq-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 90px; align-items: start; }
.faq-heading { position: sticky; top: 105px; }
.faq-accordion .accordion-item { border-color: var(--line); }
.faq-accordion .accordion-item button { color: var(--ink); }
.faq-accordion .accordion-content p { color: var(--muted); }

.cta-section { position: relative; padding: 120px 0; color: var(--white); background: linear-gradient(140deg, #0a6b79, #073139); overflow: hidden; }
.cta-pattern { position: absolute; inset: 0; opacity: .09; background-image: radial-gradient(circle at 1px 1px, white 1px, transparent 0); background-size: 28px 28px; }
.cta-section::after { content: ""; position: absolute; width: 500px; height: 500px; right: -200px; top: -250px; border-radius: 50%; border: 80px solid rgba(149,223,104,.1); }
.cta-inner { position: relative; z-index: 1; max-width: 850px; text-align: center; }
.cta-inner h2 { font-size: clamp(3rem, 6vw, 5.5rem); }
.cta-inner p { max-width: 680px; margin: 22px auto 30px; color: rgba(255,255,255,.7); font-size: 1.02rem; }

.site-footer { padding: 78px 0 26px; color: rgba(255,255,255,.72); background: var(--ink-deep); }
.footer-grid { display: grid; grid-template-columns: 1.5fr .8fr .8fr; gap: 80px; padding-bottom: 54px; }
.footer-grid > div { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.footer-grid > div:first-child p { max-width: 440px; color: rgba(255,255,255,.5); }
.footer-grid > div > strong { color: var(--white); margin-bottom: 10px; }
.footer-grid a:not(.brand) { font-size: .84rem; }
.footer-grid a:not(.brand):hover { color: var(--green-bright); }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.09); font-size: .74rem; }
.footer-bottom p { margin: 0; color: rgba(255,255,255,.4); }
.footer-bottom a { flex: 0 0 auto; color: var(--green-bright); }

.whatsapp-float { position: fixed; right: 22px; bottom: 22px; z-index: 900; display: flex; align-items: center; gap: 9px; height: 54px; padding: 0 18px 0 13px; border-radius: 99px; color: #082a1c; background: #77df82; box-shadow: 0 15px 38px rgba(4,45,28,.28); font-size: .82rem; font-weight: 900; transition: transform .2s ease, box-shadow .2s ease; }
.whatsapp-float:hover { transform: translateY(-3px); box-shadow: 0 18px 42px rgba(4,45,28,.38); }
.whatsapp-float svg { width: 29px; fill: var(--white); stroke: none; }
.whatsapp-float svg path:first-child { fill: #118b47; }
.whatsapp-float svg path:last-child { fill: var(--white); }

/* El contenido permanece visible aunque JavaScript no cargue. */
.reveal { opacity: 1; transform: none; }
.reveal.visible { animation: reveal-up .65s ease both; }
@keyframes reveal-up {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 1080px) {
  .main-nav { gap: 16px; font-size: .8rem; }
  .hero-layout { gap: 35px; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .service-card-wide { grid-column: span 2; }
  .process-grid { grid-template-columns: repeat(3, 1fr); }
  .process-item:nth-child(3) { border-right: 0; }
  .process-item:nth-child(-n+3) { border-bottom: 1px solid var(--line); }
  .brand-cloud { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
  .section { padding: 85px 0; }
  .site-header { height: 72px; background: rgba(5,36,41,.9); backdrop-filter: blur(16px); }
  .menu-toggle { display: block; z-index: 2; }
  .menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle.active span:nth-child(2) { opacity: 0; }
  .menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .main-nav { position: fixed; inset: 0; padding: 110px 25px 40px; display: flex; flex-direction: column; align-items: stretch; gap: 0; color: var(--white); background: rgba(5,36,41,.98); transform: translateX(100%); transition: transform .3s ease; }
  .main-nav.open { transform: translateX(0); }
  .main-nav a { padding: 17px 5px; border-bottom: 1px solid rgba(255,255,255,.1); font-size: 1.05rem; }
  .main-nav .nav-cta { margin-top: 18px; padding: 15px 18px; text-align: center; border: 0; background: var(--green-bright); color: var(--ink-deep); }
  .hero { min-height: auto; padding: 125px 0 95px; }
  .hero-layout, .split-layout, .water-layout, .engineering-layout, .faq-layout { grid-template-columns: 1fr; }
  .hero-visual { min-height: 500px; margin-top: 15px; }
  .section-heading, .water-intro { grid-template-columns: 1fr; gap: 20px; }
  .value-grid { grid-template-columns: 1fr 1fr; }
  .value-grid article:nth-child(2) { border-right: 0; }
  .value-grid article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .dual-grid { grid-template-columns: 1fr; }
  .solution-panel { min-height: 690px; }
  .faq-heading { position: static; }
  .footer-grid { grid-template-columns: 1.4fr 1fr; }
  .footer-grid > div:last-child { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .section { padding: 72px 0; }
  .brand-mark { width: 39px; height: 39px; }
  .brand-copy strong { font-size: .94rem; }
  .hero { padding-top: 110px; }
  .hero-copy h1 { font-size: clamp(2.65rem, 13vw, 4.2rem); }
  .hero-copy > p { font-size: .96rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .button { width: 100%; }
  .hero-visual { min-height: 430px; }
  .orbit-one { width: 350px; height: 350px; right: -60px; }
  .orbit-two { width: 260px; height: 260px; right: -15px; }
  .solar-card { width: 90%; right: 0; top: 40px; }
  .panel-illustration { height: 175px; }
  .water-card { left: 0; bottom: 45px; }
  .metric-card { display: none; }
  .value-strip { margin-top: 0; }
  .value-grid { grid-template-columns: 1fr; }
  .value-grid article { min-height: 82px; border-right: 0; border-bottom: 1px solid var(--line); }
  .value-grid article:last-child { border-bottom: 0; }
  .section-heading h2, .content-panel h2, .water-intro h2, .engineering-copy h2, .faq-heading h2 { font-size: 2.35rem; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 335px; }
  .service-card-wide { grid-column: span 1; display: flex; align-items: flex-start; }
  .service-card-wide .service-icon { margin-bottom: 30px; }
  .service-card-wide .text-link { margin-top: auto; padding-top: 24px; }
  .split-layout { gap: 42px; }
  .solar-visual { min-height: 460px; }
  .energy-panels { width: 90%; }
  .large-panel { height: 160px; }
  .feature-columns { grid-template-columns: 1fr; gap: 0; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .process-item { min-height: 200px; border-bottom: 1px solid var(--line); }
  .process-item:nth-child(2n) { border-right: 0; }
  .process-item:nth-last-child(-n+2) { border-bottom: 0; }
  .pump-diagram { min-height: 390px; }
  .pump-body { width: 145px; height: 145px; }
  .water-rings i:nth-child(3) { width: 340px; height: 340px; }
  .application-tags a { width: 100%; margin: 16px 0 0; }
  .solution-panel { min-height: 650px; }
  .solution-art { height: 280px; }
  .solution-content { padding: 32px 25px 35px; }
  .mini-list { grid-template-columns: 1fr; }
  .engineering-grid { grid-template-columns: 1fr; }
  .brand-cloud { grid-template-columns: 1fr 1fr; }
  .brand-cloud span { min-height: 80px; font-size: .84rem; }
  .cta-section { padding: 90px 0; }
  .cta-inner h2 { font-size: 2.85rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid > div:last-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
  .whatsapp-float { width: 54px; padding: 0; justify-content: center; }
  .whatsapp-float span { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}