/* ============================================================
   BITUB – Product Presentation Website
   styles.css
   ============================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  --green:     #2C4A3E;
  --green-mid: #3d6b5a;
  --green-lt:  #4a8070;
  --cream:     #F5F0E8;
  --cream-dk:  #EDE6D6;
  --gold:      #8B6914;
  --gold-lt:   #b58c2a;
  --text:      #2A2A2A;
  --text-mid:  #555555;
  --white:     #FFFFFF;
  --shadow-sm: 0 2px 12px rgba(0,0,0,.08);
  --shadow-md: 0 8px 32px rgba(0,0,0,.12);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.18);
  --radius:    8px;
  --radius-lg: 16px;
  --transition: .35s cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Lato', sans-serif;
  color: var(--text);
  background: var(--cream);
  line-height: 1.7;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: 'Playfair Display', serif;
  line-height: 1.2;
}

/* ---------- Utility ---------- */
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Global paragraph justification */
.section p { text-align: justify; }

.section { padding: 6rem 0; }
.section-cream  { background: var(--cream); }
.section-cream-dk { background: var(--cream-dk); }
.section-white  { background: var(--white); }
.section-dark   { background: var(--green); }
.section-green  { background: var(--green-mid); }

.light-text { color: rgba(245,240,232,.90); text-align: justify; }

/* ---------- Scroll Fade-In ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s var(--transition), transform .7s var(--transition);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  padding: .9rem 0;
  transition: background var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: rgba(44,74,62,.97);
  box-shadow: 0 2px 20px rgba(0,0,0,.25);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: .1em;
}

.nav-links {
  display: flex;
  gap: 1.8rem;
  align-items: center;
}

.nav-link {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: rgba(255,255,255,.85);
  transition: color var(--transition);
  position: relative;
  padding-bottom: 4px;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--gold-lt);
  transition: width var(--transition);
}
.nav-link:hover,
.nav-link.active {
  color: var(--white);
}
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO  – split-screen layout
   ============================================================ */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
  overflow: hidden;
}

/* ── Left panel ── */
.hero-left {
  background: var(--green);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 7rem 4rem 3.5rem;
  position: relative;
  z-index: 1;
}
/* subtle texture overlay */
.hero-left::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 20%, rgba(139,105,20,.15) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  position: relative;
}

.hero-eyebrow {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--gold-lt);
  margin-bottom: 1.4rem;
}

.hero-title {
  font-size: clamp(4.5rem, 9vw, 9rem);
  color: var(--white);
  letter-spacing: .06em;
  line-height: 1;
}

.hero-subtitle {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: clamp(1.1rem, 2.2vw, 1.7rem);
  color: rgba(245,240,232,.85);
  margin-top: .7rem;
  margin-bottom: 2.8rem;
  letter-spacing: .04em;
}

.btn-hero {
  display: inline-block;
  padding: .85rem 2.8rem;
  border: 2px solid rgba(245,240,232,.55);
  color: var(--white);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  border-radius: 40px;
  transition: background var(--transition), border-color var(--transition);
}
.btn-hero:hover {
  background: var(--gold);
  border-color: var(--gold);
}

/* ── Logos block (bottom of left panel) ── */
.hero-logos {
  position: relative;
}

.logos-row {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.logo-img {
  max-height: 44px;
  width: auto;
  background: rgba(255,255,255,.92);
  padding: .35rem .7rem;
  border-radius: 6px;
  object-fit: contain;
  transition: background var(--transition), transform var(--transition);
}
.logo-img:hover {
  background: #fff;
  transform: translateY(-2px);
}

.hero-caption {
  margin-top: 1rem;
  font-size: .72rem;
  letter-spacing: .1em;
  color: rgba(245,240,232,.5);
  text-transform: uppercase;
}

/* ── Right panel ── */
.hero-right {
  position: relative;
  overflow: hidden;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
}

/* soft left-edge fade to blend with the text panel */
.hero-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, var(--green) 0%, transparent 18%);
  pointer-events: none;
}

/* ============================================================
   SECTION HEADER
   ============================================================ */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-label {
  display: block;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: .5rem;
}
.section-label.light { color: var(--gold-lt); }

.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  color: var(--green);
}
.section-title.light { color: var(--white); }

.section-divider {
  width: 60px;
  height: 3px;
  background: var(--green);
  margin: 1.2rem auto 0;
  border-radius: 2px;
}
.section-divider.accent { background: var(--gold-lt); }

/* ============================================================
   SUBSECTION
   ============================================================ */
.subsection {
  margin-bottom: 5rem;
}
.subsection:last-child { margin-bottom: 0; }

.subsection-title {
  font-size: 1.6rem;
  color: var(--green);
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: .6rem;
}
.subsection-title::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 40px; height: 2px;
  background: var(--gold);
  border-radius: 2px;
}
.subsection-title.light {
  color: rgba(245,240,232,.95);
}
.subsection-title.light::after { background: var(--gold-lt); }

/* ============================================================
   TWO-COLUMN LAYOUT
   ============================================================ */
.content-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.content-two-col.reverse { direction: rtl; }
.content-two-col.reverse > * { direction: ltr; }

.text-block p { margin-bottom: 1rem; color: var(--text-mid); text-align: justify; }
.text-block p:last-child { margin-bottom: 0; }

.subsection-lead {
  font-weight: 700;
  color: var(--green) !important;
  margin-top: 1.4rem !important;
}
.mt { margin-top: 1.8rem !important; }

/* ============================================================
   STYLED LIST
   ============================================================ */
.styled-list {
  margin-top: .6rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.styled-list li {
  padding-left: 1.4rem;
  position: relative;
  color: var(--text-mid);
  font-size: .95rem;
}
.styled-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: .55em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

/* ============================================================
   IMAGE HELPERS
   ============================================================ */
.image-block { position: relative; }
.content-img { width: 100%; object-fit: cover; }
.content-img.rounded { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

.image-trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.image-trio figure { overflow: hidden; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.image-trio .content-img { transition: transform .5s var(--transition); }
.image-trio figure:hover .content-img { transform: scale(1.04); }

.image-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
  align-items: stretch;
}
.image-duo figure {
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.image-duo figure img {
  flex: 1;
  min-height: 280px;
  object-fit: cover;
  transition: transform .5s var(--transition);
}
.image-duo figure:hover img { transform: scale(1.04); }

.fig-caption {
  text-align: center;
  font-size: .8rem;
  font-style: italic;
  color: rgba(245,240,232,.7);
  padding: .5rem .5rem 0;
}
.fig-caption.dark { color: var(--text-mid); }

/* ============================================================
   INNOVATION BOX
   ============================================================ */
.innovation-box {
  margin-top: 2.5rem;
  padding: 2rem 2.5rem;
  border-left: 4px solid var(--gold-lt);
  background: rgba(255,255,255,.06);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}
.innovation-box p {
  font-size: 1.05rem;
  color: rgba(245,240,232,.9);
  font-style: italic;
}

.innovation-tag {
  display: inline-block;
  background: var(--gold);
  color: var(--white);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  padding: .25rem .8rem;
  border-radius: 20px;
  margin-bottom: .8rem;
}

/* ============================================================
   SPECS GRID
   ============================================================ */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.spec-card {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  padding: 1.8rem 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
  transition: background var(--transition);
}
.spec-card:hover { background: rgba(255,255,255,.12); }

.spec-number {
  font-family: 'Playfair Display', serif;
  font-size: 2.6rem;
  color: var(--white);
  line-height: 1;
}
.spec-number small {
  font-size: 1rem;
  color: var(--gold-lt);
  margin-left: 3px;
}
.spec-label {
  font-size: .78rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(245,240,232,.6);
  font-weight: 700;
}
.spec-icon {
  font-size: 2rem;
  color: var(--gold-lt);
}

/* ============================================================
   PHASES / TIMELINE
   ============================================================ */
.phases-timeline {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: start;
  margin-top: 2rem;
}

.phase-connector {
  width: 2px;
  height: 60px;
  background: var(--gold-lt);
  opacity: .4;
  margin: 0 auto;
  align-self: center;
}

.phase-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), background var(--transition);
}
.phase-card:hover {
  transform: translateY(-6px);
  background: rgba(255,255,255,.1);
}

.phase-number {
  background: var(--gold);
  color: var(--white);
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
  padding: .4rem;
  letter-spacing: .05em;
}

.phase-img-wrap {
  overflow: hidden;
  background: #f0ece3;
}
.phase-img {
  width: 100%;
  height: 240px;
  object-fit: contain;
  object-position: center;
  padding: .8rem;
  transition: transform .5s var(--transition);
}
.phase-card:hover .phase-img { transform: scale(1.03); }

.phase-body { padding: 1.4rem; }
.phase-title {
  font-size: 1rem;
  color: rgba(245,240,232,.95);
  margin-bottom: .6rem;
}
.phase-body p {
  font-size: .88rem;
  color: rgba(245,240,232,.7);
}

/* ============================================================
   3D MODEL VIEWER  (model-viewer web component)
   ============================================================ */
.model3d-viewer-wrap {
  background: #0d1f18;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.08);
}

.model3d-viewer {
  width: 100%;
  height: 560px;
  background: transparent;
  --poster-color: #0d1f18;
  --progress-bar-color: var(--gold-lt);
  --progress-bar-height: 3px;
}

.model3d-hint {
  text-align: center;
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(245,240,232,.4);
  padding: .8rem 1rem;
}

/* ============================================================
   FABRICACIÓN
   ============================================================ */
/* inherits content-two-col, text-block, image-block */

/* ============================================================
   TRANSPORT STATS
   ============================================================ */
.logistics-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2.5rem 0;
}

.stat-card {
  background: var(--green);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem 1rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
}

.stat-num {
  font-family: 'Playfair Display', serif;
  font-size: 2.5rem;
  color: var(--gold-lt);
  line-height: 1;
}
.stat-desc {
  font-size: .82rem;
  letter-spacing: .06em;
  opacity: .8;
}

.text-block.wide { max-width: 100%; }

/* ============================================================
   SUSTAINABILITY
   ============================================================ */

/* Override text color for better contrast on green-mid background */
#sostenibilidad .light-text {
  color: #ffffff;
}
#sostenibilidad .content-two-col .text-block p {
  color: #ffffff;
}

.sustainability-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}
.sustainability-images figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.sustainability-images figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: center;
  display: block;
}

.eco-pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.eco-pillar {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  padding: 1.8rem 1.2rem;
  text-align: center;
  transition: background var(--transition), transform var(--transition);
}
.eco-pillar:hover {
  background: rgba(255,255,255,.14);
  transform: translateY(-4px);
}
.eco-icon {
  font-size: 2rem;
  color: var(--gold-lt);
  margin-bottom: .8rem;
}
.eco-pillar h4 {
  font-size: .95rem;
  color: var(--white);
  margin-bottom: .5rem;
}
.eco-pillar p {
  font-size: .83rem;
  color: rgba(245,240,232,.65);
}

.solution-main {
  margin-top: 2rem;
  text-align: center;
}
.solution-hero-img {
  max-height: 520px;
  width: auto;
  margin: 0 auto;
  object-fit: contain;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 4rem;
  align-items: start;
}

.contact-subtitle {
  font-size: 1.3rem;
  color: var(--green);
  margin-bottom: 1.8rem;
  padding-bottom: .6rem;
  border-bottom: 2px solid var(--cream-dk);
}

/* Form */
.contact-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
.form-group { display: flex; flex-direction: column; gap: .4rem; }
.form-group.full { margin-bottom: 1.2rem; }

.form-group label {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-mid);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: .8rem 1rem;
  border: 1.5px solid var(--cream-dk);
  border-radius: var(--radius);
  font-family: 'Lato', sans-serif;
  font-size: .95rem;
  background: var(--white);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--green-lt);
  box-shadow: 0 0 0 3px rgba(74,128,112,.15);
}
.form-group textarea { resize: vertical; }

.btn-submit {
  display: inline-block;
  padding: .9rem 3rem;
  background: var(--green);
  color: var(--white);
  border: none;
  border-radius: 40px;
  font-family: 'Lato', sans-serif;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.btn-submit:hover {
  background: var(--green-mid);
  transform: translateY(-2px);
}
.btn-submit:active { transform: translateY(0); }

.form-feedback {
  margin-top: .8rem;
  font-size: .85rem;
  color: var(--green-mid);
  min-height: 1.2rem;
}

/* Contact info */
.contact-author-card {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: 1.8rem;
  padding: 1.2rem;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.author-photo {
  width: 70px; height: 70px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 3px solid var(--cream-dk);
}
.author-name {
  font-size: 1.1rem;
  color: var(--green);
  margin-bottom: .2rem;
}
.author-role {
  font-size: .8rem;
  color: var(--text-mid);
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: .9rem;
  margin-bottom: 2rem;
}
.contact-list li {
  display: flex;
  align-items: center;
  gap: .9rem;
  font-size: .95rem;
  color: var(--text-mid);
}
.contact-icon {
  width: 36px; height: 36px;
  background: var(--green);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.contact-list a:hover { color: var(--green); }

.contact-badge {
  background: var(--green);
  color: rgba(245,240,232,.85);
  border-radius: var(--radius-lg);
  padding: 1.2rem 1.5rem;
  font-size: .85rem;
  line-height: 1.6;
}
.contact-badge strong { color: var(--gold-lt); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: #0d1f18;
  padding: 3rem 0;
}

.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer-brand { text-align: center; }
.footer-logo {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  color: var(--white);
  letter-spacing: .1em;
}
.footer-tagline {
  font-style: italic;
  color: var(--gold-lt);
  font-size: .9rem;
  margin-top: .3rem;
}

.footer-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.footer-logo-img {
  max-height: 36px;
  width: auto;
  background: rgba(255,255,255,.80);
  padding: .3rem .6rem;
  border-radius: 5px;
  object-fit: contain;
  transition: background var(--transition);
}
.footer-logo-img:hover { background: rgba(255,255,255,.95); }

.footer-copy {
  font-size: .78rem;
  color: rgba(255,255,255,.35);
  letter-spacing: .06em;
  text-align: center;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .specs-grid      { grid-template-columns: repeat(2, 1fr); }
  .eco-pillars     { grid-template-columns: repeat(2, 1fr); }
  .phases-timeline {
    grid-template-columns: 1fr;
  }
  .phase-connector { width: 60px; height: 2px; margin: 0 auto; }
}

@media (max-width: 860px) {
  /* Hero stacks vertically */
  .hero {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
  }
  .hero-left {
    padding: 6rem 2rem 2.5rem;
    min-height: 60vh;
  }
  .hero-right {
    height: 45vw;
    min-height: 260px;
  }
  .hero-img-overlay {
    background: linear-gradient(to bottom, var(--green) 0%, transparent 20%);
  }

  /* Nav collapse */
  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--green);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 2rem 2rem;
    gap: 1.4rem;
    transition: right var(--transition);
    box-shadow: -5px 0 30px rgba(0,0,0,.3);
  }
  .nav-links.open { right: 0; }
  .nav-link { font-size: .9rem; }

  .content-two-col          { grid-template-columns: 1fr; }
  .content-two-col.reverse  { direction: ltr; }
  .image-trio               { grid-template-columns: 1fr; }
  .image-duo                { grid-template-columns: 1fr; }
  .logistics-stats          { grid-template-columns: 1fr; }
  .contact-grid             { grid-template-columns: 1fr; }
  .contact-form .form-row   { grid-template-columns: 1fr; }
  .sustainability-images    { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .section   { padding: 4rem 0; }
  .hero-left  { padding: 5.5rem 1.5rem 2rem; }
  .hero-title { font-size: clamp(3.8rem, 18vw, 6.5rem); }
  .logos-row  { gap: 1.2rem; }
  .logo-img   { max-height: 32px; }
  .specs-grid { grid-template-columns: repeat(2, 1fr); }
  .eco-pillars { grid-template-columns: 1fr; }
  .model3d-viewer { height: 360px; }
}