/* EELI Technology — elt.css — Full-site stylesheet, class prefix: elt */

/* ============================================================
   CSS Custom Properties
   ============================================================ */
:root {
  --elt-dark-bg: #0d1a1f;
  --elt-dark-surface: #112229;
  --elt-dark-mid: #1e3540;
  --elt-dark-alt-bg: #162d36;
  --elt-dark-border: #2a3f47;
  --elt-light-bg: #f0f6f7;
  --elt-light-alt-bg: #e2edf0;
  --elt-white: #ffffff;
  --elt-teal: #0abfa3;
  --elt-teal-text: #055f50;
  --elt-text-primary-dark: #e8f2f4;
  --elt-text-muted-dark: #8ab0b8;
  --elt-text-primary-light: #0d2830;
  --elt-text-muted-light: #3d5a60;
  --elt-green: #5ccb75;
  --elt-amber: #e0a84a;

  --elt-nav-h: 68px;
  --elt-radius: 8px;
  --elt-radius-lg: 14px;
  --elt-max-w: 1200px;
  --elt-max-w-narrow: 760px;

  --elt-font-heading: 'Manrope', 'Inter', system-ui, -apple-system, sans-serif;
  --elt-font-body: 'IBM Plex Sans', 'Inter', system-ui, -apple-system, sans-serif;

  --elt-transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--elt-font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--elt-text-primary-light);
  background: var(--elt-white);
  -webkit-font-smoothing: antialiased;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

h1, h2, h3, h4, h5 {
  font-family: var(--elt-font-heading);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* ============================================================
   Layout Utilities
   ============================================================ */
.elt-container {
  width: 100%;
  max-width: var(--elt-max-w);
  margin-inline: auto;
  padding-inline: 24px;
}

.elt-container--narrow {
  width: 100%;
  max-width: var(--elt-max-w-narrow);
  margin-inline: auto;
  padding-inline: 24px;
}

/* ============================================================
   Typography Utilities
   ============================================================ */
.elt-eyebrow {
  font-family: var(--elt-font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--elt-teal);
  display: block;
  margin-bottom: 12px;
}

.elt-section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  margin-bottom: 16px;
}

.elt-section-sub {
  font-size: 18px;
  line-height: 1.6;
  max-width: 640px;
}

/* ============================================================
   Buttons
   ============================================================ */
.elt-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--elt-radius);
  font-family: var(--elt-font-heading);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: background var(--elt-transition), color var(--elt-transition), border-color var(--elt-transition), transform var(--elt-transition), box-shadow var(--elt-transition);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
}

.elt-btn:hover {
  transform: translateY(-1px);
}

.elt-btn:active {
  transform: translateY(0);
}

.elt-btn--primary {
  background: var(--elt-teal);
  color: var(--elt-dark-bg);
  border-color: var(--elt-teal);
}

.elt-btn--primary:hover {
  background: #08a98e;
  border-color: #08a98e;
}

.elt-btn--ghost {
  background: transparent;
  color: var(--elt-text-primary-dark);
  border-color: var(--elt-dark-border);
}

.elt-btn--ghost:hover {
  border-color: var(--elt-teal);
  color: var(--elt-teal);
}

.elt-btn--ghost-dark {
  background: transparent;
  color: var(--elt-text-primary-light);
  border-color: #c5d8dc;
}

.elt-btn--ghost-dark:hover {
  border-color: var(--elt-teal-text);
  color: var(--elt-teal-text);
}

/* ============================================================
   Navigation — always dark, always fixed
   ============================================================ */
.elt-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  height: var(--elt-nav-h);
  background: var(--elt-dark-bg);
  border-bottom: 1px solid transparent;
  transition: border-color var(--elt-transition), box-shadow var(--elt-transition);
}

.elt-nav--scrolled {
  border-bottom-color: var(--elt-dark-border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.elt-nav__inner {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 100%;
  max-width: var(--elt-max-w);
  margin-inline: auto;
  padding-inline: 24px;
}

.elt-nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  margin-right: 16px;
}

.elt-nav__logo img {
  height: 28px;
  width: auto;
}

.elt-nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.elt-nav__link {
  font-family: var(--elt-font-heading);
  font-size: 14px;
  font-weight: 700;
  color: var(--elt-text-muted-dark);
  padding: 8px 12px;
  border-radius: var(--elt-radius);
  transition: color var(--elt-transition), background var(--elt-transition);
  white-space: nowrap;
}

.elt-nav__link:hover,
.elt-nav__link.is-active {
  color: var(--elt-text-primary-dark);
  background: rgba(255,255,255,0.06);
}

.elt-nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.elt-nav__cta {
  font-family: var(--elt-font-heading);
  font-size: 14px;
  font-weight: 700;
  background: var(--elt-teal);
  color: var(--elt-dark-bg);
  padding: 9px 18px;
  border-radius: var(--elt-radius);
  transition: background var(--elt-transition);
  white-space: nowrap;
}

.elt-nav__cta:hover {
  background: #08a98e;
}

/* Hamburger */
.elt-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  cursor: pointer;
  background: transparent;
  border: none;
  border-radius: var(--elt-radius);
}

.elt-hamburger__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--elt-text-primary-dark);
  border-radius: 2px;
  transition: transform var(--elt-transition), opacity var(--elt-transition);
}

.elt-hamburger.is-open .elt-hamburger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.elt-hamburger.is-open .elt-hamburger__bar:nth-child(2) {
  opacity: 0;
}

.elt-hamburger.is-open .elt-hamburger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav */
.elt-mobile-nav {
  position: fixed;
  top: var(--elt-nav-h);
  left: 0;
  right: 0;
  background: var(--elt-dark-bg);
  border-bottom: 1px solid var(--elt-dark-border);
  padding: 16px 24px 24px;
  z-index: 850;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 280ms cubic-bezier(0.4, 0, 0.2, 1), opacity 280ms;
}

.elt-mobile-nav.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.elt-mobile-nav__links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}

.elt-mobile-nav__link {
  font-family: var(--elt-font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--elt-text-muted-dark);
  padding: 10px 12px;
  border-radius: var(--elt-radius);
  transition: color var(--elt-transition), background var(--elt-transition);
}

.elt-mobile-nav__link:hover {
  color: var(--elt-text-primary-dark);
  background: rgba(255,255,255,0.06);
}

.elt-mobile-nav__cta {
  display: block;
  text-align: center;
  font-family: var(--elt-font-heading);
  font-size: 15px;
  font-weight: 700;
  background: var(--elt-teal);
  color: var(--elt-dark-bg);
  padding: 12px 20px;
  border-radius: var(--elt-radius);
  transition: background var(--elt-transition);
}

.elt-mobile-nav__cta:hover {
  background: #08a98e;
}

/* ============================================================
   Footer
   ============================================================ */
.elt-footer {
  background: var(--elt-dark-bg);
  border-top: 1px solid var(--elt-dark-border);
  padding-top: 64px;
}

.elt-footer__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  padding-bottom: 48px;
}

.elt-footer__col-heading {
  font-family: var(--elt-font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--elt-text-primary-dark);
  margin-bottom: 16px;
}

.elt-footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.elt-footer__link {
  font-size: 14px;
  color: var(--elt-text-muted-dark);
  transition: color var(--elt-transition);
}

.elt-footer__link:hover {
  color: var(--elt-teal);
}

.elt-footer__contact-item {
  font-size: 14px;
  color: var(--elt-text-muted-dark);
  margin-bottom: 6px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.elt-footer__contact-item a {
  color: var(--elt-text-muted-dark);
  transition: color var(--elt-transition);
}

.elt-footer__contact-item a:hover {
  color: var(--elt-teal);
}

.elt-footer__bottom {
  border-top: 1px solid var(--elt-dark-border);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.elt-footer__copy {
  font-size: 13px;
  color: var(--elt-text-muted-dark);
}

.elt-footer__legal-links {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.elt-footer__legal-link {
  font-size: 13px;
  color: var(--elt-text-muted-dark);
  transition: color var(--elt-transition);
}

.elt-footer__legal-link:hover {
  color: var(--elt-teal);
}

/* ============================================================
   Cookie Banner
   ============================================================ */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9000;
  background: var(--elt-dark-surface);
  border-top: 1px solid var(--elt-dark-border);
  padding: 16px 24px;
}

.cookie-banner__inner {
  max-width: var(--elt-max-w);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.cookie-banner__text {
  flex: 1;
  font-size: 14px;
  color: var(--elt-text-muted-dark);
  min-width: 240px;
}

.cookie-banner__text a {
  color: var(--elt-teal);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.cookie-banner__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.cookie-banner__btn {
  font-family: var(--elt-font-heading);
  font-size: 13px;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: var(--elt-radius);
  cursor: pointer;
  transition: background var(--elt-transition), color var(--elt-transition);
  border: 2px solid transparent;
}

.cookie-banner__btn--primary {
  background: var(--elt-teal);
  color: var(--elt-dark-bg);
  border-color: var(--elt-teal);
}

.cookie-banner__btn--primary:hover {
  background: #08a98e;
  border-color: #08a98e;
}

.cookie-banner__btn--secondary {
  background: transparent;
  color: var(--elt-text-muted-dark);
  border-color: var(--elt-dark-border);
}

.cookie-banner__btn--secondary:hover {
  border-color: var(--elt-teal);
  color: var(--elt-teal);
}

/* ============================================================
   Fade-in Animation (IntersectionObserver)
   ============================================================ */
.elt-fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 560ms cubic-bezier(0.4, 0, 0.2, 1), transform 560ms cubic-bezier(0.4, 0, 0.2, 1);
}

.elt-fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .elt-fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ============================================================
   Homepage — Hero Section (dark bg)
   ============================================================ */
.elt-hero {
  background: var(--elt-dark-bg);
  padding-top: var(--elt-nav-h);
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.elt-hero__bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-dle-scene.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
  pointer-events: none;
}

.elt-hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding-block: 80px;
  position: relative;
  z-index: 1;
}

.elt-hero__text {
  /* block — single child, no grid needed */
}

.elt-hero__eyebrow {
  font-family: var(--elt-font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--elt-teal);
  display: block;
  margin-bottom: 16px;
}

.elt-hero__h1 {
  font-size: clamp(32px, 4.5vw, 56px);
  font-weight: 800;
  color: var(--elt-text-primary-dark);
  line-height: 1.1;
  margin-bottom: 20px;
}

.elt-hero__sub {
  font-size: 18px;
  line-height: 1.65;
  color: var(--elt-text-muted-dark);
  margin-bottom: 36px;
  max-width: 520px;
}

.elt-hero__cta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.elt-hero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* DLE Schematic SVG */
.elt-dle-schematic {
  width: 100%;
  max-width: 480px;
  height: auto;
}

/* Electrode potential animation */
.elt-dle-arc-line {
  stroke-dasharray: 300;
  stroke-dashoffset: 300;
  animation: elt-draw-arc 3s ease-in-out infinite;
}

@keyframes elt-draw-arc {
  0% { stroke-dashoffset: 300; }
  40% { stroke-dashoffset: 0; }
  70% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -300; }
}

@media (prefers-reduced-motion: reduce) {
  .elt-dle-arc-line {
    stroke-dashoffset: 0;
    animation: none;
  }
}

/* ============================================================
   Homepage — Problem Section (dark-alt bg)
   ============================================================ */
.elt-problem {
  background: var(--elt-dark-alt-bg);
  padding-block: 88px;
}

.elt-problem__header {
  max-width: 640px;
  margin-bottom: 56px;
}

.elt-problem__header .elt-section-title {
  color: var(--elt-text-primary-dark);
}

.elt-problem__header .elt-section-sub {
  color: var(--elt-text-muted-dark);
}

.elt-problem__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.elt-problem__card {
  background: var(--elt-dark-surface);
  border: 1px solid var(--elt-dark-border);
  border-radius: var(--elt-radius-lg);
  padding: 28px;
}

.elt-problem__icon {
  width: 44px;
  height: 44px;
  background: rgba(10, 191, 163, 0.12);
  border-radius: var(--elt-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--elt-teal);
  font-size: 20px;
  margin-bottom: 18px;
}

.elt-problem__card-title {
  font-family: var(--elt-font-heading);
  font-size: 17px;
  font-weight: 700;
  color: var(--elt-text-primary-dark);
  margin-bottom: 10px;
}

.elt-problem__card-text {
  font-size: 14px;
  line-height: 1.65;
  color: var(--elt-text-muted-dark);
}

/* ============================================================
   Homepage — Solution Section (light bg)
   ============================================================ */
.elt-solution {
  background: var(--elt-light-bg);
  padding-block: 88px;
}

.elt-solution__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.elt-solution__header {
  /* block */
}

.elt-solution__header .elt-eyebrow {
  color: var(--elt-teal-text);
}

.elt-solution__header .elt-section-title {
  color: var(--elt-text-primary-light);
}

.elt-solution__header .elt-section-sub {
  color: var(--elt-text-muted-light);
}

.elt-solution__features {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-top: 8px;
}

.elt-solution__feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.elt-solution__feat-icon {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  background: rgba(10, 191, 163, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--elt-teal-text);
  font-size: 16px;
}

.elt-solution__feat-body {
  /* block */
}

.elt-solution__feat-title {
  font-family: var(--elt-font-heading);
  font-size: 15px;
  font-weight: 700;
  color: var(--elt-text-primary-light);
  margin-bottom: 4px;
}

.elt-solution__feat-text {
  font-size: 14px;
  line-height: 1.65;
  color: var(--elt-text-muted-light);
}

/* ============================================================
   Homepage — Metrics Section (light-alt bg) — inline mock
   ============================================================ */
.elt-metrics {
  background: var(--elt-light-alt-bg);
  padding-block: 64px;
}

.elt-metrics__header {
  text-align: center;
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: 48px;
}

.elt-metrics__header .elt-eyebrow {
  color: var(--elt-teal-text);
}

.elt-metrics__header .elt-section-title {
  color: var(--elt-text-primary-light);
}

.elt-metrics-mock {
  background: var(--elt-white);
  border: 1px solid #c5d8dc;
  border-radius: var(--elt-radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.elt-metrics-mock__stat {
  padding: 20px 32px;
  text-align: center;
}

.elt-metrics-mock__stat + .elt-metrics-mock__stat {
  border-left: 1px solid #c5d8dc;
}

.elt-metrics-mock__value {
  font-family: var(--elt-font-heading);
  font-size: 48px;
  font-weight: 800;
  color: var(--elt-teal-text);
  line-height: 1;
  margin-bottom: 8px;
}

.elt-metrics-mock__label {
  font-size: 13px;
  font-weight: 500;
  color: var(--elt-text-muted-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.elt-metrics-mock__sub {
  font-size: 12px;
  color: var(--elt-text-muted-light);
  margin-top: 4px;
}

/* ============================================================
   Homepage — Applications Teaser (light bg)
   ============================================================ */
.elt-appteaser {
  background: var(--elt-light-bg);
  padding-block: 88px;
}

.elt-appteaser__header {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: 56px;
}

.elt-appteaser__header .elt-eyebrow {
  color: var(--elt-teal-text);
}

.elt-appteaser__header .elt-section-title {
  color: var(--elt-text-primary-light);
}

.elt-appteaser__header .elt-section-sub {
  color: var(--elt-text-muted-light);
  margin-inline: auto;
}

.elt-appteaser__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.elt-appteaser__card {
  background: var(--elt-white);
  border: 1px solid #c5d8dc;
  border-radius: var(--elt-radius-lg);
  padding: 28px;
  transition: box-shadow var(--elt-transition), border-color var(--elt-transition);
}

.elt-appteaser__card:hover {
  border-color: var(--elt-teal);
  box-shadow: 0 4px 24px rgba(10, 191, 163, 0.08);
}

.elt-appteaser__card-icon {
  width: 44px;
  height: 44px;
  background: rgba(10, 191, 163, 0.08);
  border-radius: var(--elt-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--elt-teal-text);
  font-size: 20px;
  margin-bottom: 16px;
}

.elt-appteaser__card-title {
  font-family: var(--elt-font-heading);
  font-size: 17px;
  font-weight: 700;
  color: var(--elt-text-primary-light);
  margin-bottom: 8px;
}

.elt-appteaser__card-text {
  font-size: 14px;
  line-height: 1.65;
  color: var(--elt-text-muted-light);
}

.elt-appteaser__cta {
  text-align: center;
}

/* ============================================================
   Homepage — Evidence Section (dark bg)
   ============================================================ */
.elt-evidence {
  background: var(--elt-dark-bg);
  padding-block: 88px;
}

.elt-evidence__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.elt-evidence__label {
  font-family: var(--elt-font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--elt-teal);
  display: block;
  margin-bottom: 16px;
}

.elt-evidence__quote {
  font-family: var(--elt-font-heading);
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 700;
  color: var(--elt-text-primary-dark);
  line-height: 1.35;
  margin-bottom: 24px;
}

.elt-evidence__quote::before {
  content: '\201C';
  color: var(--elt-teal);
}

.elt-evidence__quote::after {
  content: '\201D';
  color: var(--elt-teal);
}

.elt-evidence__cite {
  font-size: 13px;
  color: var(--elt-text-muted-dark);
  font-style: italic;
}

.elt-evidence__stats {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.elt-evidence__stat {
  background: var(--elt-dark-surface);
  border: 1px solid var(--elt-dark-border);
  border-radius: var(--elt-radius-lg);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.elt-evidence__stat-value {
  font-family: var(--elt-font-heading);
  font-size: 36px;
  font-weight: 800;
  color: var(--elt-teal);
  line-height: 1;
  flex-shrink: 0;
}

.elt-evidence__stat-desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--elt-text-muted-dark);
}

/* ============================================================
   Homepage — CTA Section (dark bg)
   ============================================================ */
.elt-cta {
  background: var(--elt-dark-alt-bg);
  border-top: 1px solid var(--elt-dark-border);
  padding-block: 88px;
  text-align: center;
}

.elt-cta__inner {
  max-width: 640px;
  margin-inline: auto;
}

.elt-cta__heading {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--elt-text-primary-dark);
  margin-bottom: 16px;
}

.elt-cta__sub {
  font-size: 17px;
  line-height: 1.6;
  color: var(--elt-text-muted-dark);
  margin-bottom: 36px;
}

.elt-cta__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ============================================================
   Sub-page Hero (dark, shared)
   ============================================================ */
.elt-subhero {
  background: var(--elt-dark-bg);
  padding-top: calc(var(--elt-nav-h) + 64px);
  padding-bottom: 64px;
  position: relative;
  overflow: hidden;
}

.elt-subhero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 60%;
  height: 100%;
  background: radial-gradient(ellipse at 80% 50%, rgba(10, 191, 163, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.elt-subhero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  max-width: var(--elt-max-w);
  margin-inline: auto;
  padding-inline: 24px;
  position: relative;
  z-index: 1;
}

.elt-subhero__text {
  /* block */
}

.elt-subhero__eyebrow {
  font-family: var(--elt-font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--elt-teal);
  display: block;
  margin-bottom: 14px;
}

.elt-subhero__h1 {
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 800;
  color: var(--elt-text-primary-dark);
  margin-bottom: 16px;
}

.elt-subhero__sub {
  font-size: 17px;
  line-height: 1.65;
  color: var(--elt-text-muted-dark);
}

.elt-subhero__cta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.elt-subhero__visual {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

/* Sub-page hero with image (product, about) */
.elt-subhero--with-image .elt-subhero__inner {
  gap: 64px;
}

.elt-subhero__img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--elt-radius-lg);
  border: 1px solid var(--elt-dark-border);
}

/* Sub-page hero stat fragment */
.elt-subhero__data-fragment {
  background: var(--elt-dark-surface);
  border: 1px solid var(--elt-dark-border);
  border-radius: var(--elt-radius-lg);
  padding: 28px 32px;
  width: 100%;
}

.elt-subhero__data-fragment-title {
  font-family: var(--elt-font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--elt-teal);
  margin-bottom: 20px;
}

.elt-subhero__data-rows {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.elt-subhero__data-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--elt-dark-border);
}

.elt-subhero__data-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.elt-subhero__data-key {
  font-size: 13px;
  color: var(--elt-text-muted-dark);
}

.elt-subhero__data-val {
  font-family: var(--elt-font-heading);
  font-size: 14px;
  font-weight: 700;
  color: var(--elt-text-primary-dark);
}

/* Sub-page light hero (contact page) */
.elt-subhero--light {
  background: var(--elt-light-bg);
  padding-top: calc(var(--elt-nav-h) + 64px);
}

.elt-subhero--light::before {
  display: none;
}

.elt-subhero--light .elt-subhero__eyebrow {
  color: var(--elt-teal-text);
}

.elt-subhero--light .elt-subhero__h1 {
  color: var(--elt-text-primary-light);
}

.elt-subhero--light .elt-subhero__sub {
  color: var(--elt-text-muted-light);
}

/* ============================================================
   Product Page
   ============================================================ */
.elt-prod-overview {
  background: var(--elt-light-bg);
  padding-block: 88px;
}

.elt-prod-overview__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.elt-prod-overview__text .elt-eyebrow {
  color: var(--elt-teal-text);
}

.elt-prod-overview__text .elt-section-title {
  color: var(--elt-text-primary-light);
}

.elt-prod-overview__text p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--elt-text-muted-light);
  margin-top: 16px;
}

/* Product dashboard inline mock */
.elt-dashboard-mock {
  background: var(--elt-dark-surface);
  border: 1px solid var(--elt-dark-border);
  border-radius: var(--elt-radius-lg);
  overflow: hidden;
}

.elt-dashboard-mock__titlebar {
  background: var(--elt-dark-mid);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--elt-dark-border);
}

.elt-dashboard-mock__titlebar-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.elt-dashboard-mock__titlebar-dot--red { background: #ef4444; }
.elt-dashboard-mock__titlebar-dot--amber { background: var(--elt-amber); }
.elt-dashboard-mock__titlebar-dot--green { background: var(--elt-green); }

.elt-dashboard-mock__title {
  font-family: var(--elt-font-heading);
  font-size: 12px;
  font-weight: 700;
  color: var(--elt-text-muted-dark);
  margin-left: 8px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.elt-dashboard-mock__body {
  padding: 20px;
}

.elt-dashboard-mock__status-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--elt-dark-border);
}

.elt-dashboard-mock__status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--elt-green);
  box-shadow: 0 0 6px rgba(92, 203, 117, 0.5);
}

.elt-dashboard-mock__status-text {
  font-family: var(--elt-font-heading);
  font-size: 12px;
  font-weight: 700;
  color: var(--elt-green);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.elt-dashboard-mock__table {
  width: 100%;
  border-collapse: collapse;
}

.elt-dashboard-mock__table tr + tr td {
  border-top: 1px solid var(--elt-dark-border);
}

.elt-dashboard-mock__table td {
  padding: 8px 0;
  font-size: 13px;
}

.elt-dashboard-mock__table td:first-child {
  color: var(--elt-text-muted-dark);
  padding-right: 16px;
}

.elt-dashboard-mock__table td:last-child {
  font-family: var(--elt-font-heading);
  font-weight: 700;
  color: var(--elt-text-primary-dark);
  text-align: right;
}

.elt-dashboard-mock__table td:last-child .elt-badge--good {
  color: var(--elt-green);
}

.elt-dashboard-mock__table td:last-child .elt-badge--warn {
  color: var(--elt-amber);
}

/* Product feature grid */
.elt-prod-features {
  background: var(--elt-dark-alt-bg);
  padding-block: 88px;
}

.elt-prod-features__header {
  max-width: 640px;
  margin-bottom: 56px;
}

.elt-prod-features__header .elt-section-title {
  color: var(--elt-text-primary-dark);
}

.elt-prod-features__header .elt-section-sub {
  color: var(--elt-text-muted-dark);
}

.elt-prod-features__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.elt-prod-feature-card {
  background: var(--elt-dark-surface);
  border: 1px solid var(--elt-dark-border);
  border-radius: var(--elt-radius-lg);
  padding: 28px;
}

.elt-prod-feature-card__icon {
  width: 44px;
  height: 44px;
  background: rgba(10, 191, 163, 0.12);
  border-radius: var(--elt-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--elt-teal);
  font-size: 20px;
  margin-bottom: 18px;
}

.elt-prod-feature-card__title {
  font-family: var(--elt-font-heading);
  font-size: 17px;
  font-weight: 700;
  color: var(--elt-text-primary-dark);
  margin-bottom: 10px;
}

.elt-prod-feature-card__text {
  font-size: 14px;
  line-height: 1.65;
  color: var(--elt-text-muted-dark);
}

/* Product integration section */
.elt-prod-integration {
  background: var(--elt-light-alt-bg);
  padding-block: 88px;
}

.elt-prod-integration__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.elt-prod-integration__text .elt-eyebrow {
  color: var(--elt-teal-text);
}

.elt-prod-integration__text .elt-section-title {
  color: var(--elt-text-primary-light);
}

.elt-prod-integration__text p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--elt-text-muted-light);
  margin-top: 16px;
}

/* ============================================================
   How It Works Page
   ============================================================ */
.elt-hiw-phases {
  background: var(--elt-light-bg);
  padding-block: 88px;
}

.elt-hiw-phases__header {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
  margin-bottom: 64px;
}

.elt-hiw-phases__header .elt-eyebrow {
  color: var(--elt-teal-text);
}

.elt-hiw-phases__header .elt-section-title {
  color: var(--elt-text-primary-light);
}

.elt-hiw-phases__header .elt-section-sub {
  color: var(--elt-text-muted-light);
  margin-inline: auto;
}

.elt-hiw-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 900px;
  margin-inline: auto;
}

.elt-hiw-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  align-items: start;
  padding-block: 32px;
  border-bottom: 1px solid #c5d8dc;
}

.elt-hiw-step:last-child {
  border-bottom: none;
}

.elt-hiw-step__num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(10, 191, 163, 0.1);
  border: 2px solid rgba(10, 191, 163, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--elt-font-heading);
  font-size: 20px;
  font-weight: 800;
  color: var(--elt-teal-text);
  flex-shrink: 0;
}

.elt-hiw-step__body {
  /* block */
}

.elt-hiw-step__title {
  font-family: var(--elt-font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--elt-text-primary-light);
  margin-bottom: 10px;
}

.elt-hiw-step__text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--elt-text-muted-light);
}

.elt-hiw-diagram {
  background: var(--elt-dark-alt-bg);
  padding-block: 88px;
}

.elt-hiw-diagram__header {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: 56px;
}

.elt-hiw-diagram__header .elt-section-title {
  color: var(--elt-text-primary-dark);
}

.elt-hiw-diagram__header .elt-section-sub {
  color: var(--elt-text-muted-dark);
  margin-inline: auto;
}

.elt-hiw-diagram__visual {
  max-width: 760px;
  margin-inline: auto;
}

/* Control loop inline SVG diagram */
.elt-control-loop-svg {
  width: 100%;
  height: auto;
}

/* ============================================================
   Applications Page
   ============================================================ */
.elt-apps-sections {
  background: var(--elt-light-bg);
  padding-block: 88px;
}

.elt-apps-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding-block: 56px;
  border-bottom: 1px solid #c5d8dc;
}

.elt-apps-section:last-child {
  border-bottom: none;
}

.elt-apps-section--flip {
  direction: rtl;
}

.elt-apps-section--flip > * {
  direction: ltr;
}

.elt-apps-section__eyebrow {
  font-family: var(--elt-font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--elt-teal-text);
  display: block;
  margin-bottom: 12px;
}

.elt-apps-section__title {
  font-size: clamp(22px, 2.5vw, 28px);
  font-weight: 800;
  color: var(--elt-text-primary-light);
  margin-bottom: 14px;
}

.elt-apps-section__text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--elt-text-muted-light);
  margin-bottom: 20px;
}

.elt-apps-section__img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--elt-radius-lg);
  border: 1px solid #c5d8dc;
}

/* Brine comparison table inline mock */
.elt-brine-table-section {
  background: var(--elt-dark-alt-bg);
  padding-block: 88px;
}

.elt-brine-table-section__header {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: 48px;
}

.elt-brine-table-section__header .elt-section-title {
  color: var(--elt-text-primary-dark);
}

.elt-brine-table-section__header .elt-section-sub {
  color: var(--elt-text-muted-dark);
  margin-inline: auto;
}

.elt-brine-table-wrap {
  overflow-x: auto;
  border-radius: var(--elt-radius-lg);
}

.elt-brine-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  background: var(--elt-dark-surface);
  border: 1px solid var(--elt-dark-border);
  border-radius: var(--elt-radius-lg);
  overflow: hidden;
}

.elt-brine-table thead {
  background: var(--elt-dark-mid);
}

.elt-brine-table th {
  padding: 14px 20px;
  font-family: var(--elt-font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--elt-text-muted-dark);
  text-align: left;
  border-bottom: 1px solid var(--elt-dark-border);
}

.elt-brine-table td {
  padding: 13px 20px;
  font-size: 14px;
  color: var(--elt-text-primary-dark);
  border-bottom: 1px solid var(--elt-dark-border);
}

.elt-brine-table tr:last-child td {
  border-bottom: none;
}

.elt-brine-table td:first-child {
  font-weight: 500;
  color: var(--elt-text-muted-dark);
}

.elt-brine-table__badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
}

.elt-brine-table__badge--high {
  background: rgba(92, 203, 117, 0.15);
  color: var(--elt-green);
}

.elt-brine-table__badge--medium {
  background: rgba(224, 168, 74, 0.15);
  color: var(--elt-amber);
}

/* ============================================================
   About Page
   ============================================================ */
.elt-about-mission {
  background: var(--elt-light-bg);
  padding-block: 88px;
}

.elt-about-mission__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.elt-about-mission__text .elt-eyebrow {
  color: var(--elt-teal-text);
}

.elt-about-mission__text .elt-section-title {
  color: var(--elt-text-primary-light);
}

.elt-about-mission__text p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--elt-text-muted-light);
  margin-top: 16px;
}

.elt-about-values {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.elt-about-value {
  background: var(--elt-white);
  border: 1px solid #c5d8dc;
  border-radius: var(--elt-radius);
  padding: 20px;
}

.elt-about-value__title {
  font-family: var(--elt-font-heading);
  font-size: 15px;
  font-weight: 700;
  color: var(--elt-text-primary-light);
  margin-bottom: 6px;
}

.elt-about-value__text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--elt-text-muted-light);
}

/* Team section */
.elt-about-team {
  background: var(--elt-dark-alt-bg);
  padding-block: 88px;
}

.elt-about-team__header {
  text-align: center;
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: 56px;
}

.elt-about-team__header .elt-section-title {
  color: var(--elt-text-primary-dark);
}

.elt-about-team__header .elt-section-sub {
  color: var(--elt-text-muted-dark);
  margin-inline: auto;
}

.elt-about-team__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.elt-about-card {
  background: var(--elt-dark-surface);
  border: 1px solid var(--elt-dark-border);
  border-radius: var(--elt-radius-lg);
  padding: 28px;
  text-align: center;
}

.elt-about-card__avatar-wrap {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  overflow: hidden;
  margin-inline: auto;
  margin-bottom: 18px;
  background: var(--elt-dark-mid);
  position: relative;
}

.elt-about-card__avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.elt-about-card__initials {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--elt-font-heading);
  font-size: 22px;
  font-weight: 800;
  color: var(--elt-teal);
  background: var(--elt-dark-mid);
  border-radius: 50%;
}

.elt-about-card__name {
  font-family: var(--elt-font-heading);
  font-size: 17px;
  font-weight: 700;
  color: var(--elt-text-primary-dark);
  margin-bottom: 4px;
}

.elt-about-card__role {
  font-size: 13px;
  color: var(--elt-teal);
  font-weight: 500;
  margin-bottom: 14px;
}

.elt-about-card__bio {
  font-size: 13px;
  line-height: 1.65;
  color: var(--elt-text-muted-dark);
}

/* About history / facts section */
.elt-about-facts {
  background: var(--elt-light-alt-bg);
  padding-block: 88px;
}

.elt-about-facts__header {
  text-align: center;
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: 56px;
}

.elt-about-facts__header .elt-eyebrow {
  color: var(--elt-teal-text);
}

.elt-about-facts__header .elt-section-title {
  color: var(--elt-text-primary-light);
}

.elt-about-facts__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.elt-about-fact {
  background: var(--elt-white);
  border: 1px solid #c5d8dc;
  border-radius: var(--elt-radius-lg);
  padding: 28px;
  text-align: center;
}

.elt-about-fact__value {
  font-family: var(--elt-font-heading);
  font-size: 40px;
  font-weight: 800;
  color: var(--elt-teal-text);
  line-height: 1;
  margin-bottom: 8px;
}

.elt-about-fact__label {
  font-size: 13px;
  color: var(--elt-text-muted-light);
}

/* ============================================================
   Contact Page
   ============================================================ */
.elt-contact {
  background: var(--elt-light-bg);
  padding-top: var(--elt-nav-h);
  padding-bottom: 88px;
}

.elt-contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  padding-top: 64px;
}

.elt-contact__info-heading {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  color: var(--elt-text-primary-light);
  margin-bottom: 12px;
}

.elt-contact__info-sub {
  font-size: 16px;
  line-height: 1.65;
  color: var(--elt-text-muted-light);
  margin-bottom: 36px;
}

.elt-contact__details {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.elt-contact__detail-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.elt-contact__detail-icon {
  width: 36px;
  height: 36px;
  background: rgba(10, 191, 163, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--elt-teal-text);
  font-size: 15px;
  flex-shrink: 0;
  margin-top: 2px;
}

.elt-contact__detail-label {
  font-family: var(--elt-font-heading);
  font-size: 12px;
  font-weight: 700;
  color: var(--elt-text-muted-light);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 3px;
}

.elt-contact__detail-value {
  font-size: 15px;
  color: var(--elt-text-primary-light);
}

.elt-contact__detail-value a {
  color: var(--elt-teal-text);
  transition: color var(--elt-transition);
}

.elt-contact__detail-value a:hover {
  color: var(--elt-teal);
}

/* Contact form */
.elt-contact-form {
  background: var(--elt-white);
  border: 1px solid #c5d8dc;
  border-radius: var(--elt-radius-lg);
  padding: 36px;
}

.elt-contact-form__title {
  font-family: var(--elt-font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--elt-text-primary-light);
  margin-bottom: 24px;
}

.elt-form-field {
  margin-bottom: 18px;
}

.elt-form-label {
  display: block;
  font-family: var(--elt-font-heading);
  font-size: 13px;
  font-weight: 700;
  color: var(--elt-text-muted-light);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.elt-form-input,
.elt-form-select,
.elt-form-textarea {
  width: 100%;
  padding: 11px 14px;
  background: var(--elt-light-bg);
  border: 1.5px solid #c5d8dc;
  border-radius: var(--elt-radius);
  font-family: var(--elt-font-body);
  font-size: 15px;
  color: var(--elt-text-primary-light);
  transition: border-color var(--elt-transition), box-shadow var(--elt-transition);
  appearance: none;
  -webkit-appearance: none;
}

.elt-form-input:focus,
.elt-form-select:focus,
.elt-form-textarea:focus {
  outline: none;
  border-color: var(--elt-teal);
  box-shadow: 0 0 0 3px rgba(10, 191, 163, 0.15);
}

.elt-form-input::placeholder,
.elt-form-textarea::placeholder {
  color: #9ab5bb;
}

.elt-form-textarea {
  resize: vertical;
  min-height: 120px;
}

.elt-form-submit {
  width: 100%;
  padding: 13px 24px;
  background: var(--elt-teal);
  color: var(--elt-dark-bg);
  border: none;
  border-radius: var(--elt-radius);
  font-family: var(--elt-font-heading);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--elt-transition);
}

.elt-form-submit:hover {
  background: #08a98e;
}

/* Form confirm view (hidden by default) */
.elt-form-confirm-view {
  display: none;
  text-align: center;
  padding: 32px 16px;
}

.elt-form-confirm-view--active {
  display: block;
}

.elt-form-confirm-view__icon {
  width: 56px;
  height: 56px;
  background: rgba(10, 191, 163, 0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--elt-teal-text);
  font-size: 24px;
  margin-inline: auto;
  margin-bottom: 16px;
}

.elt-form-confirm-view__title {
  font-family: var(--elt-font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--elt-text-primary-light);
  margin-bottom: 10px;
}

.elt-form-confirm-view__text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--elt-text-muted-light);
}

/* ============================================================
   Insights (Blog) — Listing Page
   ============================================================ */
.elt-insights-hero {
  background: var(--elt-dark-bg);
  padding-top: calc(var(--elt-nav-h) + 64px);
  padding-bottom: 48px;
  text-align: center;
}

.elt-insights-hero__eyebrow {
  font-family: var(--elt-font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--elt-teal);
  display: block;
  margin-bottom: 14px;
}

.elt-insights-hero__h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: var(--elt-text-primary-dark);
  margin-bottom: 14px;
}

.elt-insights-hero__sub {
  font-size: 17px;
  line-height: 1.6;
  color: var(--elt-text-muted-dark);
  max-width: 560px;
  margin-inline: auto;
}

/* Blog listing grid */
.elt-insights-listing {
  background: var(--elt-light-bg);
  padding-block: 72px;
}

/* Featured article (first/large card) */
.elt-insights-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  background: var(--elt-white);
  border: 1px solid #c5d8dc;
  border-radius: var(--elt-radius-lg);
  overflow: hidden;
  margin-bottom: 48px;
  text-decoration: none;
  transition: box-shadow var(--elt-transition);
}

.elt-insights-featured:hover {
  box-shadow: 0 6px 32px rgba(10, 191, 163, 0.08);
}

.elt-insights-featured__img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}

.elt-insights-featured__body {
  padding: 36px;
}

.elt-insights-featured__tag {
  font-family: var(--elt-font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--elt-teal-text);
  display: block;
  margin-bottom: 12px;
}

.elt-insights-featured__title {
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 800;
  color: var(--elt-text-primary-light);
  margin-bottom: 12px;
  line-height: 1.25;
}

.elt-insights-featured__excerpt {
  font-size: 14px;
  line-height: 1.7;
  color: var(--elt-text-muted-light);
  margin-bottom: 20px;
}

.elt-insights-featured__meta {
  font-size: 12px;
  color: var(--elt-text-muted-light);
  display: flex;
  gap: 16px;
  align-items: center;
}

/* Article card grid */
.elt-insights-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.elt-insights-card {
  background: var(--elt-white);
  border: 1px solid #c5d8dc;
  border-radius: var(--elt-radius-lg);
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--elt-transition), border-color var(--elt-transition);
}

.elt-insights-card:hover {
  border-color: var(--elt-teal);
  box-shadow: 0 4px 20px rgba(10, 191, 163, 0.08);
}

.elt-insights-card__img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.elt-insights-card__body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.elt-insights-card__title {
  font-family: var(--elt-font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--elt-text-primary-light);
  margin-bottom: 8px;
  line-height: 1.3;
}

.elt-insights-card__excerpt {
  font-size: 13px;
  line-height: 1.65;
  color: var(--elt-text-muted-light);
  flex: 1;
  margin-bottom: 14px;
}

.elt-insights-card__meta {
  font-size: 12px;
  color: var(--elt-text-muted-light);
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid #c5d8dc;
}

/* ============================================================
   Article Template
   ============================================================ */
.elt-article-page {
  background: var(--elt-white);
}

.elt-article-hero {
  background: var(--elt-dark-bg);
  padding-top: calc(var(--elt-nav-h) + 48px);
  padding-bottom: 0;
  position: relative;
}

.elt-article-back {
  font-family: var(--elt-font-heading);
  font-size: 13px;
  font-weight: 700;
  color: var(--elt-teal);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
  transition: color var(--elt-transition);
  text-decoration: none;
}

.elt-article-back:hover {
  color: #08a98e;
}

.elt-article-hero__inner {
  max-width: var(--elt-max-w);
  margin-inline: auto;
  padding-inline: 24px;
  padding-bottom: 48px;
}

.elt-article-hero__tag {
  font-family: var(--elt-font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--elt-teal);
  display: block;
  margin-bottom: 14px;
}

.elt-article-hero__h1 {
  font-size: clamp(24px, 3.5vw, 40px);
  font-weight: 800;
  color: var(--elt-text-primary-dark);
  line-height: 1.2;
  margin-bottom: 20px;
  max-width: 760px;
}

.elt-article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--elt-text-muted-dark);
}

.elt-article-meta__author {
  font-weight: 500;
  color: var(--elt-text-primary-dark);
}

.elt-article-meta__sep {
  color: var(--elt-text-muted-dark);
  opacity: 0.6;
}

.elt-article-meta__date {
  color: inherit;
}

/* Article cover image */
.elt-article-cover {
  max-width: 760px;
  margin-inline: auto;
  margin-bottom: 0;
  padding-inline: 24px;
}

.elt-article-cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--elt-radius-lg) var(--elt-radius-lg) 0 0;
  display: block;
}

/* Article body */
.elt-article-body {
  background: var(--elt-white);
  padding-block: 56px;
}

.elt-article-content {
  max-width: 720px;
  margin-inline: auto;
  padding-inline: 24px;
}

.elt-article-content h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--elt-text-primary-light);
  margin-top: 48px;
  margin-bottom: 16px;
}

.elt-article-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--elt-text-primary-light);
  margin-top: 32px;
  margin-bottom: 12px;
}

.elt-article-content p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--elt-text-primary-light);
  margin-bottom: 20px;
}

.elt-article-content ul,
.elt-article-content ol {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 20px;
}

.elt-article-content ol {
  list-style: decimal;
}

.elt-article-content li {
  font-size: 16px;
  line-height: 1.75;
  color: var(--elt-text-primary-light);
  margin-bottom: 8px;
}

.elt-article-content a {
  color: var(--elt-teal-text);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.elt-article-content a:hover {
  color: var(--elt-teal);
}

.elt-article-content blockquote {
  border-left: 3px solid var(--elt-teal);
  padding-left: 20px;
  margin: 28px 0;
  color: var(--elt-text-muted-light);
  font-style: italic;
}

.elt-article-content strong {
  font-weight: 700;
  color: var(--elt-text-primary-light);
}

.elt-article-cta {
  background: var(--elt-light-alt-bg);
  border-top: 1px solid #c5d8dc;
  padding-block: 64px;
  text-align: center;
}

.elt-article-cta__heading {
  font-size: 26px;
  font-weight: 800;
  color: var(--elt-text-primary-light);
  margin-bottom: 12px;
}

.elt-article-cta__text {
  font-size: 16px;
  line-height: 1.6;
  color: var(--elt-text-muted-light);
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: 28px;
}

/* ============================================================
   Legal Pages — CSS Readiness (abw-legal populates HTML)
   ============================================================ */
.elt-legal-page {
  background: var(--elt-white);
  padding-top: var(--elt-nav-h);
}

.elt-legal-hero {
  background: var(--elt-light-alt-bg);
  padding-block: 48px;
  border-bottom: 1px solid #c5d8dc;
}

.elt-legal-hero__h1 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  color: var(--elt-text-primary-light);
}

.elt-legal-hero__meta {
  font-size: 14px;
  color: var(--elt-text-muted-light);
  margin-top: 8px;
}

.elt-legal-content {
  background: var(--elt-white);
  padding-block: 64px;
}

.elt-legal-body {
  max-width: 720px;
  margin-inline: auto;
  padding-inline: 24px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--elt-text-primary-light);
}

.elt-legal-body h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--elt-text-primary-light);
  margin-top: 40px;
  margin-bottom: 12px;
}

.elt-legal-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--elt-text-primary-light);
  margin-top: 28px;
  margin-bottom: 8px;
}

.elt-legal-body p {
  margin-bottom: 16px;
}

.elt-legal-body ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 16px;
}

.elt-legal-body li {
  margin-bottom: 8px;
}

.elt-legal-body a {
  color: var(--elt-teal-text);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ============================================================
   Auth Pages (login / register) — NO nav/footer
   ============================================================ */
.elt-auth-page {
  min-height: 100vh;
  background: var(--elt-light-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.elt-auth-card {
  background: var(--elt-white);
  border: 1px solid #c5d8dc;
  border-radius: var(--elt-radius-lg);
  padding: 44px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 4px 40px rgba(13, 28, 31, 0.08);
}

.elt-auth-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 28px;
}

.elt-auth-logo img {
  height: 32px;
  width: auto;
}

.elt-auth-title {
  font-family: var(--elt-font-heading);
  font-size: 24px;
  font-weight: 800;
  color: var(--elt-text-primary-light);
  text-align: center;
  margin-bottom: 6px;
}

.elt-auth-sub {
  font-size: 14px;
  color: var(--elt-text-muted-light);
  text-align: center;
  margin-bottom: 28px;
}

/* Auth form view */
.elt-auth-form-view {
  /* default: visible */
}

/* JS state hooks — no styling, used by elt.js initLoginForm / initRegisterForm */
.elt-auth-form--login { /* JS state hook, no styling */ }
.elt-auth-form--register { /* JS state hook, no styling */ }

.elt-auth-field {
  margin-bottom: 16px;
}

.elt-auth-label {
  display: block;
  font-family: var(--elt-font-heading);
  font-size: 13px;
  font-weight: 700;
  color: var(--elt-text-muted-light);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.elt-auth-input {
  width: 100%;
  padding: 11px 14px;
  background: var(--elt-light-bg);
  border: 1.5px solid #c5d8dc;
  border-radius: var(--elt-radius);
  font-family: var(--elt-font-body);
  font-size: 15px;
  color: var(--elt-text-primary-light);
  transition: border-color var(--elt-transition), box-shadow var(--elt-transition);
}

.elt-auth-input:focus {
  outline: none;
  border-color: var(--elt-teal);
  box-shadow: 0 0 0 3px rgba(10, 191, 163, 0.15);
}

.elt-auth-input::placeholder {
  color: #9ab5bb;
}

.elt-auth-error {
  display: none;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: var(--elt-radius);
  padding: 10px 14px;
  font-size: 14px;
  color: #dc2626;
  margin-bottom: 16px;
}

.elt-auth-error--visible {
  display: block;
}

.elt-auth-submit {
  width: 100%;
  padding: 12px 24px;
  background: var(--elt-teal);
  color: var(--elt-dark-bg);
  border: none;
  border-radius: var(--elt-radius);
  font-family: var(--elt-font-heading);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--elt-transition);
  margin-top: 4px;
}

.elt-auth-submit:hover {
  background: #08a98e;
}

/* Auth confirm view (hidden by default) */
.elt-auth-confirm-view {
  display: none;
  text-align: center;
  padding: 8px 0;
}

.elt-auth-confirm-view--active {
  display: block;
}

.elt-auth-confirm-view__icon {
  width: 56px;
  height: 56px;
  background: rgba(10, 191, 163, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--elt-teal-text);
  font-size: 24px;
  margin-inline: auto;
  margin-bottom: 16px;
}

.elt-auth-confirm-view__title {
  font-family: var(--elt-font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--elt-text-primary-light);
  margin-bottom: 10px;
}

.elt-auth-confirm-view__text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--elt-text-muted-light);
}

.elt-auth-links {
  margin-top: 20px;
  text-align: center;
  font-size: 14px;
  color: var(--elt-text-muted-light);
}

.elt-auth-links a {
  color: var(--elt-teal-text);
  font-weight: 600;
  transition: color var(--elt-transition);
}

.elt-auth-links a:hover {
  color: var(--elt-teal);
}

.elt-auth-legal {
  margin-top: 16px;
  text-align: center;
  font-size: 12px;
  color: var(--elt-text-muted-light);
}

.elt-auth-legal a {
  color: var(--elt-text-muted-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ============================================================
   Shared Badge
   ============================================================ */
.elt-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.elt-badge--teal {
  background: rgba(10, 191, 163, 0.12);
  color: var(--elt-teal-text);
}

.elt-badge--green {
  background: rgba(92, 203, 117, 0.12);
  color: #2e7d4f;
}

.elt-badge--amber {
  background: rgba(224, 168, 74, 0.12);
  color: #8a5b00;
}

/* ============================================================
   Section padding utility — dark vs light
   ============================================================ */
.elt-section--dark {
  background: var(--elt-dark-bg);
}

.elt-section--dark-alt {
  background: var(--elt-dark-alt-bg);
}

.elt-section--light {
  background: var(--elt-light-bg);
}

.elt-section--light-alt {
  background: var(--elt-light-alt-bg);
}

/* ============================================================
   FAQ / Accordion (how-it-works, product pages)
   ============================================================ */
.elt-faq {
  background: var(--elt-light-bg);
  padding-block: 88px;
}

.elt-faq__header {
  text-align: center;
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: 48px;
}

.elt-faq__header .elt-eyebrow {
  color: var(--elt-teal-text);
}

.elt-faq__header .elt-section-title {
  color: var(--elt-text-primary-light);
}

.elt-faq__list {
  max-width: 760px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.elt-faq__item {
  border-bottom: 1px solid #c5d8dc;
}

.elt-faq__item:first-child {
  border-top: 1px solid #c5d8dc;
}

.elt-faq__trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 0;
  text-align: left;
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: var(--elt-font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--elt-text-primary-light);
  transition: color var(--elt-transition);
}

.elt-faq__trigger:hover {
  color: var(--elt-teal-text);
}

.elt-faq__trigger[aria-expanded="true"] {
  color: var(--elt-teal-text);
}

.elt-faq__icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(10, 191, 163, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--elt-teal-text);
  font-size: 12px;
  transition: transform var(--elt-transition), background var(--elt-transition);
}

.elt-faq__trigger[aria-expanded="true"] .elt-faq__icon {
  transform: rotate(45deg);
  background: rgba(10, 191, 163, 0.15);
}

.elt-faq__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 320ms cubic-bezier(0.4, 0, 0.2, 1);
}

.elt-faq__panel--open {
  max-height: 600px;
}

.elt-faq__panel-inner {
  padding-bottom: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--elt-text-muted-light);
}

/* ============================================================
   Responsive: Tablet 768px
   ============================================================ */
@media (max-width: 1024px) {
  .elt-hero__inner {
    gap: 40px;
  }

  .elt-problem__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .elt-about-facts__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .elt-evidence__inner {
    gap: 48px;
  }
}

@media (max-width: 900px) {
  .elt-about-team__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .elt-insights-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .elt-prod-features__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  /* Nav */
  .elt-nav__links {
    display: none;
  }

  .elt-nav__cta {
    display: none;
  }

  .elt-nav__actions .elt-nav__link {
    display: none;
  }

  .elt-hamburger {
    display: flex;
    margin-left: auto;
  }

  /* Hero */
  .elt-hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-block: 56px;
  }

  .elt-hero__visual {
    order: -1;
    max-width: 340px;
    margin-inline: auto;
  }

  .elt-hero__sub {
    max-width: 100%;
  }

  /* Solution */
  .elt-solution__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  /* Sub-hero */
  .elt-subhero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  /* Evidence */
  .elt-evidence__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  /* Metrics mock */
  .elt-metrics-mock {
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .elt-metrics-mock__stat + .elt-metrics-mock__stat {
    border-left: none;
    border-top: 1px solid #c5d8dc;
  }

  /* Appteaser grid */
  .elt-appteaser__grid {
    grid-template-columns: 1fr;
  }

  /* Problem grid */
  .elt-problem__grid {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .elt-footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .elt-footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  /* Contact */
  .elt-contact__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  /* About */
  .elt-about-mission__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .elt-about-team__grid {
    grid-template-columns: 1fr;
    max-width: 360px;
    margin-inline: auto;
  }

  .elt-about-facts__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Insights featured */
  .elt-insights-featured {
    grid-template-columns: 1fr;
  }

  .elt-insights-grid {
    grid-template-columns: 1fr;
  }

  /* Applications */
  .elt-apps-section {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .elt-apps-section--flip {
    direction: ltr;
  }

  /* Prod overview */
  .elt-prod-overview__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .elt-prod-integration__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  /* HIW step */
  .elt-hiw-step {
    grid-template-columns: 60px 1fr;
    gap: 20px;
  }

  /* Auth card */
  .elt-auth-card {
    padding: 32px 24px;
  }
}

.elt-brine-table__badge--low {
  background: rgba(142, 168, 178, 0.15);
  color: var(--elt-text-muted-dark);
}

/* ============================================================
   Insights Email CTA Section
   ============================================================ */
.elt-insights-email {
  background: var(--elt-dark-bg);
  padding-block: 72px;
  text-align: center;
  border-top: 1px solid var(--elt-dark-border);
}

.elt-insights-email__heading {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  color: var(--elt-text-primary-dark);
  margin-bottom: 12px;
}

.elt-insights-email__sub {
  font-size: 16px;
  line-height: 1.6;
  color: var(--elt-text-muted-dark);
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: 28px;
}

.elt-insights-email__form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 480px;
  margin-inline: auto;
}

.elt-insights-email__input {
  flex: 1;
  min-width: 220px;
  padding: 12px 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--elt-dark-border);
  border-radius: var(--elt-radius);
  font-family: var(--elt-font-body);
  font-size: 15px;
  color: var(--elt-text-primary-dark);
  outline: none;
  transition: border-color var(--elt-transition);
}

.elt-insights-email__input::placeholder {
  color: var(--elt-text-muted-dark);
}

.elt-insights-email__input:focus {
  border-color: var(--elt-teal);
}

.elt-insights-email__confirm {
  display: none;
  font-size: 15px;
  color: var(--elt-teal);
  align-items: center;
  gap: 8px;
  justify-content: center;
}

.elt-insights-email__confirm--visible {
  display: flex;
}

@media (max-width: 480px) {
  .elt-container,
  .elt-container--narrow {
    padding-inline: 16px;
  }

  .elt-hero {
    min-height: auto;
  }

  .elt-hero__inner {
    padding-block: 40px;
  }

  .elt-about-facts__grid {
    grid-template-columns: 1fr;
  }

  .elt-hiw-step {
    grid-template-columns: 1fr;
  }

  .elt-hiw-step__num {
    margin-bottom: 8px;
  }

  .elt-metrics-mock__value {
    font-size: 36px;
  }
}