/* =====================================================================
   ECOTRON — 2026 REDESIGN
   Premium deep-tech product page styles.
   Loaded after style.css (dependency: ecozen-style) on template-ecotron.php
   only. All selectors are namespaced (etr-* / #ecotron_*_section) so nothing
   here leaks into the rest of the theme. Remove the enqueue + require to
   revert. No Bootstrap / Tailwind / jQuery — pure CSS.
   ===================================================================== */

:root {
  --etr-green-900: #06231a;
  --etr-green-800: #0a3326;
  --etr-green-700: #0d3d2c;
  --etr-green-600: #16663a;
  --etr-green-500: #19753f;
  --etr-accent: #6ba546;
  --etr-accent-2: #8fd14f;

  --etr-ink: #0f1c17;
  --etr-muted: #5c6b63;
  --etr-muted-dark: rgba(233, 245, 238, 0.72);

  --etr-bg: #ffffff;
  --etr-bg-soft: #f4f8f5;
  --etr-line: #e3ebe6;
  --etr-line-dark: rgba(255, 255, 255, 0.12);

  --etr-radius: 24px;
  --etr-radius-sm: 14px;
  --etr-radius-pill: 999px;

  --etr-shadow-sm: 0 6px 24px rgba(13, 61, 44, 0.08);
  --etr-shadow-md: 0 24px 60px rgba(13, 61, 44, 0.12);
  --etr-shadow-lg: 0 50px 90px rgba(6, 35, 26, 0.45);

  --etr-maxw: 1200px;
  --etr-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Base section rhythm ---------- */
.etr-section {
  position: relative;
  padding: clamp(64px, 8vw, 130px) 0;
  background: var(--etr-bg);
  color: var(--etr-ink);
  overflow: hidden;
}

.etr-section .ecozen-container {
  position: relative;
  z-index: 2;
  max-width: var(--etr-maxw);
}

.etr-why {
  background: var(--etr-bg);
}

.etr-rnd,
.etr-specs {
  background: var(--etr-bg-soft);
}

.etr-section--dark {
  color: #eaf5ee;
  background:
    radial-gradient(circle at 82% 12%, rgba(143, 209, 79, 0.14) 0%, transparent 42%),
    radial-gradient(circle at 8% 88%, rgba(25, 117, 63, 0.28) 0%, transparent 45%),
    linear-gradient(160deg, var(--etr-green-900) 0%, var(--etr-green-800) 55%, #072a1f 100%);
}

/* ---------- Shared typography ---------- */
.etr-eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--etr-green-500);
}

.etr-eyebrow--onDark {
  color: var(--etr-accent-2);
}

.etr-head {
  max-width: 760px;
  margin: 0 0 clamp(40px, 5vw, 68px);
}

.etr-head--onDark .etr-head__lead {
  color: var(--etr-muted-dark);
}

.etr-head__title {
  margin: 0;
  font-family: var(--primary-font, "Mukta", sans-serif);
  font-weight: 800;
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: inherit;
}

.etr-head__lead {
  margin: 22px 0 0;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.7;
  color: var(--etr-muted);
  font-weight: 300;
}

/* ---------- Buttons ---------- */
.etr-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 34px;
  border-radius: var(--etr-radius-pill);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.35s var(--etr-ease), box-shadow 0.35s var(--etr-ease),
    background 0.35s var(--etr-ease), color 0.35s var(--etr-ease);
  will-change: transform;
}

.etr-btn--primary {
  color: #06231a;
  background: linear-gradient(135deg, var(--etr-accent-2), var(--etr-accent));
  box-shadow: 0 16px 34px rgba(107, 165, 70, 0.38);
}

.etr-btn--primary:hover {
  color: #06231a;
  transform: translateY(-3px);
  box-shadow: 0 22px 44px rgba(107, 165, 70, 0.5);
}

.etr-btn--ghost {
  color: #eaf5ee;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(6px);
}

.etr-btn--ghost:hover {
  color: #fff;
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.1);
}

.etr-section:not(.etr-section--dark) .etr-btn--ghost {
  color: var(--etr-green-700);
  background: transparent;
  border-color: rgba(13, 61, 44, 0.25);
}

.etr-section:not(.etr-section--dark) .etr-btn--ghost:hover {
  color: var(--etr-green-700);
  border-color: var(--etr-green-500);
  background: rgba(13, 61, 44, 0.04);
}

.etr-btn:focus-visible,
.etr-store:focus-visible,
.etr-brochure summary:focus-visible {
  outline: 3px solid var(--etr-accent-2);
  outline-offset: 3px;
}

/* =====================================================================
   1 — HERO
   ===================================================================== */
#ecotron_hero_section.etr-hero {
  padding: clamp(90px, 10vw, 160px) 0 clamp(70px, 8vw, 120px);
  /* ID specificity so this wins over the legacy #ecotron_hero_section rule in style.css */
  background:
    radial-gradient(circle at 82% 12%, rgba(143, 209, 79, 0.16) 0%, transparent 44%),
    radial-gradient(circle at 8% 92%, rgba(25, 117, 63, 0.3) 0%, transparent 46%),
    linear-gradient(160deg, var(--etr-green-900) 0%, var(--etr-green-800) 55%, #072a1f 100%);
}

#ecotron_hero_section .etr-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.etr-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.55;
}

.etr-orb--1 {
  width: 460px;
  height: 460px;
  top: -120px;
  right: -80px;
  background: radial-gradient(circle, rgba(143, 209, 79, 0.55), transparent 70%);
  animation: etr-float 14s ease-in-out infinite;
}

.etr-orb--2 {
  width: 520px;
  height: 520px;
  bottom: -180px;
  left: -140px;
  background: radial-gradient(circle, rgba(25, 117, 63, 0.6), transparent 70%);
  animation: etr-float 18s ease-in-out infinite reverse;
}

.etr-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
}

#ecotron_hero_section .etr-hero__wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  max-width: var(--etr-maxw);
  margin: 0 auto;
  padding: 0;
}

.etr-hero__title {
  margin: 0;
  font-weight: 800;
  font-size: clamp(2.4rem, 5.4vw, 4.2rem);
  line-height: 1.03;
  letter-spacing: -0.025em;
  color: #fff;
}

.etr-hero__subtitle {
  max-width: 560px;
  margin: 26px 0 0;
  font-size: clamp(1.05rem, 1.5vw, 1.22rem);
  line-height: 1.7;
  font-weight: 300;
  color: var(--etr-muted-dark);
}

.etr-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 38px 0 0;
}

.etr-hero__metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: clamp(44px, 5vw, 60px) 0 0;
  padding: 26px 0 0;
  border-top: 1px solid var(--etr-line-dark);
}

.etr-metric dt {
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  font-weight: 800;
  line-height: 1.1;
  color: #fff;
}

.etr-metric dd {
  margin: 6px 0 0;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--etr-muted-dark);
}

.etr-hero__media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.etr-hero__glow {
  position: absolute;
  width: 78%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(143, 209, 79, 0.35), transparent 68%);
  filter: blur(30px);
  z-index: 0;
}

#ecotron_hero_section .etr-hero__media img {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 500px;
  height: auto;
  filter: drop-shadow(0 40px 55px rgba(0, 0, 0, 0.45));
  animation: etr-bob 6s ease-in-out infinite;
}

/* =====================================================================
   2 — WHY ECOTRON (feature cards)
   ===================================================================== */
.etr-cards {
  display: grid;
  gap: clamp(18px, 2vw, 26px);
}

.etr-cards--4 {
  grid-template-columns: repeat(4, 1fr);
}

.etr-cards--3 {
  grid-template-columns: repeat(3, 1fr);
}

.etr-card {
  position: relative;
  padding: 36px 30px 34px;
  border-radius: var(--etr-radius);
  background: #fff;
  border: 1px solid var(--etr-line);
  box-shadow: var(--etr-shadow-sm);
  overflow: hidden;
  transition: transform 0.4s var(--etr-ease), box-shadow 0.4s var(--etr-ease),
    border-color 0.4s var(--etr-ease);
}

.etr-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 4px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, var(--etr-accent-2), var(--etr-accent));
  transition: transform 0.45s var(--etr-ease);
}

.etr-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--etr-shadow-md);
  border-color: rgba(107, 165, 70, 0.35);
}

.etr-card:hover::before {
  transform: scaleX(1);
}

.etr-card__index {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--etr-accent);
  margin-bottom: 18px;
}

.etr-card__title {
  margin: 0 0 12px;
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--etr-ink);
}

.etr-card__text {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.62;
  font-weight: 300;
  color: var(--etr-muted);
}

/* =====================================================================
   3 — TECHNOLOGY (glass cards on dark)
   ===================================================================== */
.etr-tech__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at 70% 20%, #000, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at 70% 20%, #000, transparent 80%);
  pointer-events: none;
}

.etr-cards--glass .etr-gcard {
  position: relative;
  padding: 34px 30px;
  border-radius: var(--etr-radius);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.4s var(--etr-ease), background 0.4s var(--etr-ease),
    border-color 0.4s var(--etr-ease);
}

.etr-gcard:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(143, 209, 79, 0.4);
}

.etr-gcard__title {
  margin: 0 0 12px;
  font-size: 1.24rem;
  font-weight: 700;
  color: #fff;
}

.etr-gcard__title::before {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  margin-bottom: 18px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--etr-accent-2), var(--etr-accent));
}

.etr-gcard__text {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.62;
  font-weight: 300;
  color: var(--etr-muted-dark);
}

/* =====================================================================
   4 — R&D
   ===================================================================== */
.etr-rnd__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: center;
}

.etr-rnd__lead {
  margin: 22px 0 30px;
  font-size: 1.1rem;
  line-height: 1.75;
  font-weight: 300;
  color: var(--etr-muted);
}

.etr-rnd__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.etr-rnd__list li {
  position: relative;
  padding-left: 34px;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--etr-muted);
  font-weight: 300;
}

.etr-rnd__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--etr-accent-2), var(--etr-accent));
  box-shadow: 0 0 0 5px rgba(107, 165, 70, 0.14);
}

.etr-rnd__list li span {
  color: var(--etr-ink);
  font-weight: 600;
}

.etr-rnd__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.etr-stat {
  padding: 30px 26px;
  border-radius: var(--etr-radius);
  background: #fff;
  border: 1px solid var(--etr-line);
  box-shadow: var(--etr-shadow-sm);
}

.etr-stat__value {
  display: block;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--etr-green-500), var(--etr-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.etr-stat__label {
  display: block;
  margin-top: 10px;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--etr-muted);
  font-weight: 300;
}

/* =====================================================================
   5 — MOBILE APP (Ecozen Connect)
   ===================================================================== */
.etr-app__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: center;
}

.etr-app__lead {
  margin: 22px 0 28px;
  font-size: 1.1rem;
  line-height: 1.7;
  font-weight: 300;
  color: var(--etr-muted-dark);
  max-width: 520px;
}

.etr-app__features {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 20px;
}

.etr-app__features li {
  position: relative;
  padding-left: 28px;
  font-size: 0.98rem;
  color: #eaf5ee;
  font-weight: 400;
}

.etr-app__features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--etr-accent-2), var(--etr-accent));
}

.etr-app__stores {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.etr-store {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  border-radius: 12px;
  transition: transform 0.35s var(--etr-ease), box-shadow 0.35s var(--etr-ease);
}

.etr-store img {
  display: block;
  height: 54px;
  width: auto;
}

.etr-store:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.28);
}

/* overlapping phones */
.etr-app__media {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.etr-phone {
  position: absolute;
  margin: 0;
  width: 240px;
  aspect-ratio: 9 / 19.5;
  border-radius: 34px;
  padding: 10px;
  background: linear-gradient(160deg, #10261d, #061a12);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: var(--etr-shadow-lg);
  overflow: hidden;
  transition: transform 0.5s var(--etr-ease);
}

.etr-phone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 26px;
  /* fallback so layout reads as a screen even before real screenshots exist */
  background: linear-gradient(180deg, #1f6f45, #0c3323);
}

.etr-phone--back {
  transform: translateX(120px) translateY(-24px) rotate(8deg) scale(0.9);
  opacity: 0.75;
}

.etr-phone--mid {
  transform: translateX(-120px) translateY(20px) rotate(-8deg) scale(0.92);
  opacity: 0.9;
}

.etr-phone--front {
  transform: translateY(0) rotate(0);
  z-index: 3;
}

.etr-app__media:hover .etr-phone--back {
  transform: translateX(150px) translateY(-30px) rotate(10deg) scale(0.9);
}

.etr-app__media:hover .etr-phone--mid {
  transform: translateX(-150px) translateY(26px) rotate(-10deg) scale(0.92);
}

/* =====================================================================
   6 — CERTIFICATIONS
   ===================================================================== */
.etr-cert {
  display: flex;
  flex-direction: column;
  padding: 34px 28px;
  border-radius: var(--etr-radius);
  background: #fff;
  border: 1px solid var(--etr-line);
  box-shadow: var(--etr-shadow-sm);
  transition: transform 0.4s var(--etr-ease), box-shadow 0.4s var(--etr-ease);
}

.etr-cert:hover {
  transform: translateY(-6px);
  box-shadow: var(--etr-shadow-md);
}

.etr-cert__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: flex-start;
  min-width: 84px;
  height: 52px;
  padding: 0 16px;
  margin-bottom: 22px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--etr-green-700);
  background: linear-gradient(135deg, rgba(143, 209, 79, 0.18), rgba(107, 165, 70, 0.1));
  border: 1px solid rgba(107, 165, 70, 0.3);
}

.etr-cert__title {
  margin: 0 0 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--etr-ink);
}

.etr-cert__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  font-weight: 300;
  color: var(--etr-muted);
}

/* =====================================================================
   7 — WHY ECOZEN (India pillars, dark)
   ===================================================================== */
.etr-india__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: radial-gradient(circle at 50% 120%, rgba(143, 209, 79, 0.16), transparent 55%);
  pointer-events: none;
}

.etr-pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(18px, 2vw, 26px);
}

.etr-pillar {
  position: relative;
  padding: 34px 26px;
  border-radius: var(--etr-radius);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.4s var(--etr-ease), border-color 0.4s var(--etr-ease);
}

.etr-pillar:hover {
  transform: translateY(-6px);
  border-color: rgba(143, 209, 79, 0.4);
}

.etr-pillar__num {
  display: block;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--etr-accent-2);
  margin-bottom: 20px;
}

.etr-pillar__title {
  margin: 0 0 10px;
  font-size: 1.18rem;
  font-weight: 700;
  color: #fff;
}

.etr-pillar__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  font-weight: 300;
  color: var(--etr-muted-dark);
}

/* =====================================================================
   8 — FINAL CTA
   ===================================================================== */
.etr-cta {
  text-align: center;
}

.etr-cta__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(circle at 20% 20%, rgba(143, 209, 79, 0.2), transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(25, 117, 63, 0.35), transparent 50%);
  pointer-events: none;
}

.etr-cta__inner {
  max-width: 780px;
  margin: 0 auto;
}

.etr-cta__title {
  margin: 0;
  font-weight: 800;
  font-size: clamp(2rem, 4.6vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: #fff;
}

.etr-cta__lead {
  margin: 20px auto 0;
  max-width: 600px;
  font-size: 1.12rem;
  line-height: 1.7;
  font-weight: 300;
  color: var(--etr-muted-dark);
}

.etr-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: 16px;
  margin: 38px 0 0;
}

/* Brochure disclosure (pure HTML details/summary — no JS) */
.etr-brochure {
  position: relative;
}

.etr-brochure summary {
  list-style: none;
  user-select: none;
}

.etr-brochure summary::-webkit-details-marker {
  display: none;
}

.etr-brochure__form {
  margin: 18px auto 0;
  max-width: 480px;
  padding: 22px;
  border-radius: var(--etr-radius);
  background: #fff;
  color: var(--etr-ink);
  box-shadow: var(--etr-shadow-md);
  text-align: left;
}

.etr-brochure[open] summary {
  margin-bottom: 4px;
}

/* =====================================================================
   9 — TECHNICAL SPECIFICATIONS TABLE
   ===================================================================== */
.etr-spec-table {
  border: 1px solid var(--etr-line);
  border-radius: var(--etr-radius);
  background: #fff;
  overflow: hidden;
  box-shadow: var(--etr-shadow-sm);
}

.etr-spec-row {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 24px;
  padding: 22px 30px;
  border-bottom: 1px solid var(--etr-line);
  transition: background 0.3s var(--etr-ease);
}

.etr-spec-row:last-child {
  border-bottom: 0;
}

.etr-spec-row:hover {
  background: var(--etr-bg-soft);
}

.etr-spec-row__key {
  font-weight: 700;
  font-size: 1rem;
  color: var(--etr-green-700);
}

.etr-spec-row__val {
  font-size: 1rem;
  line-height: 1.55;
  font-weight: 300;
  color: var(--etr-muted);
}

/* =====================================================================
   ANIMATIONS
   ===================================================================== */
@keyframes etr-float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-24px, 26px); }
}

@keyframes etr-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@media (prefers-reduced-motion: reduce) {
  .etr-orb,
  #ecotron_hero_section .etr-hero__media img {
    animation: none !important;
  }
  .etr-btn,
  .etr-card,
  .etr-gcard,
  .etr-cert,
  .etr-pillar,
  .etr-phone,
  .etr-store {
    transition: none !important;
  }
}

/* =====================================================================
   RESPONSIVE
   ===================================================================== */
@media (max-width: 1024px) {
  .etr-cards--4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .etr-cards--3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .etr-pillars {
    grid-template-columns: repeat(2, 1fr);
  }
  #ecotron_hero_section .etr-hero__wrap {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .etr-hero__media {
    order: -1;
  }
  #ecotron_hero_section .etr-hero__media img {
    max-width: 360px;
  }
  .etr-rnd__grid,
  .etr-app__grid {
    grid-template-columns: 1fr;
  }
  .etr-app__media {
    min-height: 480px;
    margin-top: 20px;
  }
}

@media (max-width: 680px) {
  .etr-cards--4,
  .etr-cards--3,
  .etr-pillars,
  .etr-rnd__stats {
    grid-template-columns: 1fr;
  }
  .etr-hero__metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 14px;
  }
  .etr-app__features {
    grid-template-columns: 1fr;
  }
  .etr-br {
    display: none;
  }
  .etr-btn {
    width: 100%;
  }
  .etr-hero__actions,
  .etr-cta__actions {
    width: 100%;
  }
  .etr-spec-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 18px 22px;
  }
  .etr-phone {
    width: 200px;
  }
  .etr-phone--back {
    transform: translateX(74px) translateY(-18px) rotate(8deg) scale(0.9);
  }
  .etr-phone--mid {
    transform: translateX(-74px) translateY(16px) rotate(-8deg) scale(0.92);
  }
  .etr-app__media:hover .etr-phone--back {
    transform: translateX(74px) translateY(-18px) rotate(8deg) scale(0.9);
  }
  .etr-app__media:hover .etr-phone--mid {
    transform: translateX(-74px) translateY(16px) rotate(-8deg) scale(0.92);
  }
}