:root {
  --orange: #0868a9;
  --amber: #24a875;
  --teal: #168d87;
  --ink: #19202a;
  --muted: #69727e;
  --paper: #f6f8f9;
  --line: #e4e8eb;
  --white: #fff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font: 15px/1.7 Arial, sans-serif;
  overflow-x: hidden;
}
body.hec-page { --product-accent: #178fa1; --product-soft: #edf8fa; }
body.mhec-page { --product-accent: var(--teal); --product-soft: #eef8f5; }
body.rdp-page { --product-accent: #3479b9; --product-soft: #eef5fb; }
body.pce-page { --product-accent: #685bb4; --product-soft: #f2f0fb; }
body.hydromax-page { --product-accent: #a47e00; --product-soft: #fff8dc; }
body.hydromax-page .hero-copy h1 { font-size: clamp(54px, 6.5vw, 88px); letter-spacing: -.04em; }
h1, h2, h3, h4 { font-family: Georgia, serif; line-height: 1.13; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.wrap { width: min(1180px, calc(100% - 48px)); margin: auto; }
.top { height: 36px; background: var(--ink); color: #cbd1d8; font-size: 12px; }
.top .wrap, .nav .wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.nav { height: 82px; position: sticky; top: 0; z-index: 70; background: #fff; box-shadow: 0 5px 20px #1112; }
.logo img { width: auto; height: 46px; }
.links { display: flex; align-items: center; gap: 29px; font-family: Georgia, serif; }
.links a:hover, .links a:focus-visible { color: var(--orange); }
.links .active { color: var(--orange); }
.cta, .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 800; transition: .25s; }
.cta { padding: 12px 19px; border-radius: 4px; background: var(--orange); color: #fff !important; font: 700 13px Arial, sans-serif; }
.btn { padding: 13px 20px; border: 1px solid transparent; border-radius: 4px; }
.btn:hover, .btn:focus-visible { transform: translateY(-2px); box-shadow: 0 12px 25px #0002; }
.btn.orange { background: var(--orange); color: #fff; }
.btn.white { background: #fff; color: var(--orange); }
.btn.dark { background: var(--ink); color: #fff; }
.btn.outline { border-color: #bdc5cb; background: transparent; color: var(--ink); }
.menu { display: none; border: 1px solid var(--line); background: #fff; padding: 11px 16px; border-radius: 4px; color: var(--ink); font: 700 13px Arial, sans-serif; }
.skip { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 11px 16px; background: var(--ink); color: #fff; }
.skip:focus { top: 12px; }

.product-page { min-height: 100vh; }
.hero { padding: 34px 0 64px; background: linear-gradient(135deg, #fff 0%, var(--product-soft) 100%); overflow: hidden; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 30px; color: var(--muted); font-size: 12px; }
.breadcrumb a:hover { color: var(--orange); }
.hero-grid { display: grid; grid-template-columns: .88fr 1.12fr; align-items: center; gap: 64px; }
.eyebrow { margin: 0 0 14px; color: var(--orange); text-transform: uppercase; letter-spacing: .15em; font-size: 12px; font-weight: 800; }
.hero-copy h1 { margin: 0; color: var(--product-accent); font-size: clamp(72px, 9vw, 116px); letter-spacing: -.055em; }
.hero-copy .fullname { margin: 2px 0 23px; color: var(--ink); font: 24px/1.3 Georgia, serif; }
.hero-copy .lead { margin: 0 0 16px; color: var(--ink); font: 25px/1.35 Georgia, serif; }
.hero-copy > p:not(.eyebrow):not(.fullname):not(.lead) { max-width: 560px; color: var(--muted); font-size: 16px; }
.actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 28px; }
.hero-facts { display: flex; gap: 30px; margin-top: 42px; padding-top: 25px; border-top: 1px solid var(--line); }
.hero-facts strong { display: block; color: var(--product-accent); font: 700 23px Georgia, serif; }
.hero-facts span { display: block; color: var(--muted); font-size: 10px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.hero-image { height: 520px; margin: 0; position: relative; overflow: hidden; background: #dfe5e7; box-shadow: 0 24px 64px #19202a24; }
.hero-image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, #101820d6 0%, transparent 54%); pointer-events: none; }
.hero-image > img { width: 100%; height: 100%; object-fit: cover; animation: photoDrift 18s ease-in-out infinite alternate; }
.hero-image figcaption { position: absolute; z-index: 2; left: 31px; right: 31px; bottom: 28px; color: #fff; }
.hero-image figcaption span { color: #d5f3ef; font-size: 10px; font-weight: 800; letter-spacing: .15em; }
.hero-image figcaption strong { display: block; margin-top: 7px; font: 700 30px/1.12 Georgia, serif; }
.hero-image figcaption p { margin: 7px 0 0; color: #e6eeee; font-size: 12px; }
.motion-toggle { position: absolute; z-index: 4; top: 14px; right: 14px; border: 1px solid #ffffff75; border-radius: 20px; padding: 8px 12px; background: #17222bc2; color: #fff; font: 700 10px Arial, sans-serif; cursor: pointer; }
.motion-paused .hero-image > img, .motion-paused .photo img { animation-play-state: paused !important; }

.section-nav { position: sticky; top: 82px; z-index: 60; border-bottom: 1px solid var(--line); background: #fffffff5; backdrop-filter: blur(12px); }
.section-nav .wrap { display: flex; gap: 34px; overflow-x: auto; scrollbar-width: thin; }
.section-nav a { flex: 0 0 auto; padding: 18px 0 15px; border-bottom: 3px solid transparent; color: #4f5964; font-size: 13px; font-weight: 800; }
.section-nav a:hover, .section-nav a:focus-visible { color: var(--orange); border-color: var(--orange); }

.section { padding: 84px 0; scroll-margin-top: 140px; }
.tint { background: var(--paper); }
.section h2 { margin: 0; font-size: clamp(36px, 4.5vw, 54px); }
.overview { display: grid; grid-template-columns: .85fr 1.15fr; gap: 76px; }
.overview-copy { padding-top: 8px; }
.overview-copy > p { margin-top: 0; color: var(--muted); font-size: 17px; }
.tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 27px; }
.tags span { padding: 8px 12px; border: 1px solid #d6e2e1; border-radius: 30px; background: var(--product-soft); color: var(--product-accent); font-size: 11px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }

.benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 42px; }
.benefit { min-height: 216px; padding: 29px; border: 1px solid var(--line); background: #fff; transition: .25s; }
.benefit:hover { transform: translateY(-4px); box-shadow: 0 18px 35px #19202a10; }
.benefit > span { display: block; margin-bottom: 21px; color: var(--orange); font-size: 12px; font-weight: 800; }
.benefit h3 { margin: 0 0 9px; font-size: 24px; }
.benefit p { margin: 0; color: var(--muted); font-size: 14px; }
.source { margin-top: 25px; color: var(--muted); font-size: 11px; }

.section-heading { display: grid; grid-template-columns: 1fr .72fr; align-items: end; gap: 70px; margin-bottom: 42px; }
.section-heading > p { margin: 0; color: var(--muted); font-size: 16px; }
.application-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.application { border: 1px solid var(--line); background: #fff; overflow: hidden; transition: .25s; }
.application:nth-last-child(-n + 2) { grid-column: span 1; }
.application:hover { transform: translateY(-5px); box-shadow: 0 18px 40px #19202a14; }
.photo { height: 230px; margin: 0; overflow: hidden; background: #dde2e4; }
.photo img { width: 100%; height: 100%; object-fit: cover; animation: photoDrift 20s ease-in-out infinite alternate; }
.application:nth-child(even) .photo img { animation-direction: alternate-reverse; }
.application > div { padding: 24px; }
.application h3 { margin: 0 0 8px; font-size: 25px; }
.application p { min-height: 70px; margin: 0 0 14px; color: var(--muted); font-size: 13px; }
.application a { color: var(--product-accent); font-size: 12px; font-weight: 800; }
.other-apps { margin-top: 26px; padding: 26px 30px; border-left: 3px solid var(--orange); border-radius: 0 8px 8px 0; background: var(--paper); }
.other-apps h3 { margin: 0 0 7px; font-size: 23px; }
.other-apps p { margin: 0; color: var(--muted); }

.intro { max-width: 760px; color: var(--muted); font-size: 16px; }
.table-controls { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin: 32px 0 15px; }
.table-controls label { display: block; margin-bottom: 7px; color: var(--ink); font-size: 12px; font-weight: 800; }
.table-controls select { pointer-events: auto; cursor: pointer; touch-action: manipulation; position: relative; z-index: 2; min-width: 290px; border: 1px solid #cbd2d7; background: #fff; padding: 12px 35px 12px 13px; color: var(--ink); font: inherit; }
.table-controls p { margin: 0; color: var(--muted); font-size: 12px; }
.table-wrap { overflow-x: auto; border: 1px solid #dce1e4; background: #fff; box-shadow: 0 15px 40px #19202a0c; }
table { width: 100%; min-width: 760px; border-collapse: collapse; }
.wide-spec table { min-width: 2100px; }
.wide-spec th, .wide-spec td { padding: 13px 14px; }
caption { padding: 17px 18px; background: var(--product-accent); color: #fff; text-align: left; font-weight: 800; }
th, td { padding: 16px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
thead th { background: #eef2f3; color: #39444d; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }
tbody th { color: var(--product-accent); font-size: 13px; }
tbody td { color: #4f5964; font-size: 13px; }
tbody tr:hover { background: var(--product-soft); }
.viscosity { white-space: nowrap; font-weight: 700; }
.table-notes { margin-top: 18px; padding: 19px 22px; border-left: 3px solid var(--product-accent); background: #fff; color: var(--muted); font-size: 12px; }
.table-notes p { margin: 0 0 8px; }
.table-notes p:last-child { margin-bottom: 0; }
.grade-help { display: flex; justify-content: space-between; align-items: center; gap: 30px; margin-top: 24px; padding: 27px; border: 1px solid var(--line); background: #fff; }
.grade-help h3 { margin: 0 0 5px; font-size: 25px; }
.grade-help p { margin: 0; color: var(--muted); }

.pack-grid { max-width: 900px; }
.pack-grid > div > p:not(.eyebrow) { color: var(--muted); font-size: 17px; }
.pack-specs { margin: 28px 0 0; }
.pack-specs div { display: grid; grid-template-columns: 1fr 1.2fr; gap: 20px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.pack-specs dt { color: var(--muted); }
.pack-specs dd { margin: 0; font-weight: 800; }
.downloads { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px; }
.downloads article { display: flex; min-height: 245px; flex-direction: column; align-items: flex-start; padding: 27px; border: 1px solid var(--line); background: #fff; }
.doc-icon { margin-bottom: 22px; padding: 9px 11px; border-radius: 6px; background: #eef6f8; color: var(--orange); font-size: 11px; font-weight: 800; }
.downloads h3 { margin: 0 0 8px; font-size: 25px; }
.downloads p { margin: 0 0 20px; color: var(--muted); font-size: 13px; }
.downloads a { margin-top: auto; color: var(--product-accent); font-weight: 800; }

.contact-band { padding: 68px 0; background: linear-gradient(115deg, var(--orange), #f29b31 48%, var(--teal)); color: #fff; }
.contact-band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 45px; }
.contact-band .eyebrow { color: #eef6f8; }
.contact-band h2 { margin: 0 0 10px; font-size: clamp(34px, 4vw, 48px); }
.contact-band p { margin: 0; color: #eef6f8; }
.contact-band .actions { flex: 0 0 auto; margin: 0; }

.footer { padding: 55px 0 28px; background: linear-gradient(115deg, #31525a, #34736f 58%, #3c8e84); color: #dceceb; }
.footer-grid { display: grid; grid-template-columns: 1.35fr .7fr .75fr 1.55fr; gap: 38px; }
.footer .logo img { height: 43px; }
.footer h4 { margin: 0 0 12px; color: #fff; }
.footer a { display: block; margin: 6px 0; }
.footer p { color: #e4f0ef; font-size: 13px; }
.footer-contact { font-size: 13px; line-height: 1.55; }

.entrance-ready { opacity: 0; transform: translateY(20px); }
.entrance { animation: riseIn .7s ease both; }
@keyframes photoDrift { from { transform: scale(1.015) translate3d(-.35%, 0, 0); } to { transform: scale(1.055) translate3d(.55%, -.35%, 0); } }
@keyframes riseIn { to { opacity: 1; transform: none; } }

@media (max-width: 1100px) {
  .hero-grid { gap: 35px; }
  .hero-image { height: 480px; }
  .benefit { padding: 23px; }
}
@media (max-width: 900px) {
  .menu { display: block; }
  .links { display: none; }
  .links.open { position: absolute; top: 100%; left: 0; right: 0; display: flex; flex-direction: column; align-items: stretch; gap: 0; padding: 12px 24px 22px; background: #fff; box-shadow: 0 12px 18px #19202a14; }
  .links.open a { padding: 10px 0; }
  .links.open .cta { margin-top: 6px; padding: 14px 19px; text-align: center; }
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 25px; }
  .hero-copy .lead { font-size: 20px; }
  .hero-copy .fullname { font-size: 21px; }
  .hero-facts { flex-wrap: wrap; gap: 15px 22px; }
  .hero-image { height: 440px; }
  .overview { gap: 35px; }
  .section { padding: 62px 0; }
  .benefits { grid-template-columns: repeat(2, 1fr); }
  .section-heading { gap: 35px; }
  .application-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .application:last-child { grid-column: 1 / -1; }
  .downloads { gap: 15px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 25px 45px; }
  .footer-grid > div:first-child, .footer-contact { grid-column: 1 / -1; }
}
@media (max-width: 650px) {
  .wrap { width: calc(100% - 40px); }
  .top { display: none; }
  .nav { height: 70px; }
  .logo img { height: 40px; }
  .section-nav { top: 70px; }
  .hero { padding: 20px 0 34px; }
  .breadcrumb { margin-bottom: 27px; font-size: 11px; }
  .hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-copy h1 { font-size: 72px; }
  .hero-copy .fullname { font-size: 23px; }
  .hero-copy .lead { font-size: 21px; }
  .hero-image { height: 350px; }
  .hero-image figcaption { left: 24px; bottom: 24px; }
  .hero-image figcaption strong { font-size: 26px; }
  .section-nav .wrap { gap: 24px; }
  .section-nav a { padding: 16px 0 13px; font-size: 12px; }
  .section { padding: 48px 0; scroll-margin-top: 112px; }
  .overview { grid-template-columns: 1fr; gap: 23px; }
  .benefits { gap: 12px; }
  .benefit { min-height: 0; padding: 20px 17px; }
  .benefit h3 { font-size: 21px; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: 20px; }
  .application-grid { grid-template-columns: 1fr; gap: 22px; }
  .application, .application:last-child { grid-column: 1; }
  .photo { height: 250px; }
  .application > div { padding: 24px; }
  .application p { min-height: 0; }
  .table-controls { display: block; }
  .table-controls select { width: 100%; min-width: 0; }
  .table-controls p { margin-top: 13px; }
  th, td { padding: 15px; }
  .grade-help { display: block; }
  .grade-help .btn { margin-top: 20px; }
  .downloads { grid-template-columns: 1fr; }
  .contact-band { padding: 45px 0; }
  .contact-band .wrap { display: block; }
  .contact-band .actions { margin-top: 25px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 430px) {
  .benefits { grid-template-columns: 1fr; }
  .hero-facts > div { min-width: 42%; }
  .contact-band .actions { align-items: stretch; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .motion-toggle { display: none; }
  .entrance-ready { opacity: 1; transform: none; }
}