/* ============================================================
   GAC Commercial Vehicle — Tesla Semi–Inspired Design
   ============================================================ */

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: #000;
  color: #fff;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: 'Space Grotesk', sans-serif; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

/* ===== TOKENS ===== */
:root {
  --primary: #00b4ff;
  --green: #00e5a0;
  --muted: #888;
  --dim: #555;
  --surface: #111;
  --surface-2: #1a1a1a;
  --border: rgba(255,255,255,0.08);
  --header-h: 56px;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== SCROLL PROGRESS ===== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 1100;
  background: linear-gradient(90deg, var(--primary), var(--green));
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
  will-change: transform;
}

/* =============================================================
   HEADER
   ============================================================= */
.header {
  position: fixed;
  top: 0; left: 0; width: 100%;
  height: var(--header-h);
  z-index: 1000;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}
.header.scrolled {
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 1px 0 var(--border);
}
.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 10;
}
.logo-mark {
  height: 28px;
  width: auto;
  flex-shrink: 0;
  display: block;
}
.logo-wordmark {
  height: 16px;
  width: auto;
  flex-shrink: 0;
  display: block;
}
.logo-footer .logo-mark { height: 24px; }
.logo-footer .logo-wordmark { height: 14px; }
.nav {
  display: flex;
  align-items: center;
  gap: 32px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.nav a {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.3s ease;
}
.nav a:hover { color: #fff; }
.header-right { display: flex; align-items: center; gap: 16px; z-index: 10; }
.header-cta {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
  padding: 10px 24px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 4px;
  transition: all 0.3s ease;
}
.header-cta:hover {
  background: #fff;
  color: #000;
}

/* Hamburger */
.hamburger {
  display: none;
  width: 28px;
  height: 20px;
  position: relative;
  background: none;
  border: none;
  z-index: 10;
}
.hamburger span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: #fff;
  transition: all 0.35s var(--ease);
}
.hamburger span:first-child { top: 4px; }
.hamburger span:last-child { bottom: 4px; }
.hamburger.active span:first-child { top: 50%; transform: translateY(-50%) rotate(45deg); }
.hamburger.active span:last-child { bottom: auto; top: 50%; transform: translateY(-50%) rotate(-45deg); }

/* Mobile overlay */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}
.mobile-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.mobile-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}
.mobile-nav a {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--muted);
  transition: color 0.3s ease;
}
.mobile-nav a:hover { color: #fff; }
.mobile-cta {
  margin-top: 16px;
  font-size: 1rem !important;
  padding: 14px 40px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 4px;
}

/* =============================================================
   HERO
   ============================================================= */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.4) 40%, rgba(0,0,0,0.7) 75%, #000 100%),
    linear-gradient(to right, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.15) 50%);
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}
.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 20px;
}

/* ===== HERO ENTRANCE ===== */
@keyframes hero-rise {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-eyebrow,
.hero-title,
.hero-sub {
  opacity: 0;
  animation: hero-rise 0.95s var(--ease-out) forwards;
}
.hero-eyebrow { animation-delay: 0.10s; }
.hero-title   { animation-delay: 0.25s; }
.hero-sub     { animation-delay: 0.45s; }
.hero-stats {
  opacity: 0;
  animation: hero-stats-rise 0.95s var(--ease-out) 0.65s forwards;
}
@keyframes hero-stats-rise {
  from { opacity: 0; transform: translateX(-50%) translateY(24px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
.hero-scroll-hint {
  opacity: 0;
  animation: float 2s ease-in-out 1s infinite, hero-fade 0.95s var(--ease-out) 0.85s forwards;
}
@keyframes hero-fade { to { opacity: 1; } }
.hero-title {
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}
.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  color: rgba(255,255,255,0.6);
  font-weight: 400;
  max-width: 460px;
  margin: 0 auto;
}
.hero-stats {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 40px;
}
.hero-stat { text-align: center; }
.hero-stat-value {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}
.hero-stat-unit {
  font-size: 0.55em;
  font-weight: 500;
  opacity: 0.6;
  margin-left: 2px;
}
.hero-stat-label {
  display: block;
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 6px;
}
.hero-stat-divider {
  width: 1px;
  height: 36px;
  background: rgba(255,255,255,0.15);
}
.hero-scroll-hint {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.65rem;
  color: rgba(255,255,255,0.3);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  animation: float 2s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-6px); }
}

/* =============================================================
   MODEL SLIDER
   ============================================================= */
.models-section {
  background: #000;
  padding-top: 100px;
  padding-bottom: 40px;
}
.models-header {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px 48px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.models-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}
.models-tabs {
  display: flex;
  gap: 4px;
  background: var(--surface);
  border-radius: 6px;
  padding: 4px;
}
.model-tab {
  padding: 10px 24px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  background: none;
  border: none;
  border-radius: 4px;
  transition: all 0.3s ease;
}
.model-tab:hover { color: #fff; }
.model-tab.active {
  background: #fff;
  color: #000;
}
.model-tab.disabled,
.model-tab[disabled] {
  color: var(--dim);
  cursor: not-allowed;
  opacity: 0.5;
}
.model-tab.disabled:hover { color: var(--dim); }

/* Slider container */
.models-slider {
  position: relative;
  overflow: hidden;
  width: 100%;
}
.models-track {
  display: flex;
  transition: transform 0.65s var(--ease-out);
  cursor: grab;
  user-select: none;
}
.models-track:active { cursor: grabbing; }

/* Single slide */
.model-slide {
  min-width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 70vh;
}

/* Media side */
.model-media {
  position: relative;
  overflow: hidden;
  background: #000;
}
/* Product image container */
.model-product-img {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}
.model-poster {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 32px;
}
.model-product-placeholder {
  flex-direction: column;
  gap: 12px;
  background:
    radial-gradient(circle at 50% 30%, rgba(0,180,255,0.08), transparent 60%),
    repeating-linear-gradient(
      135deg,
      rgba(255,255,255,0.015) 0 12px,
      transparent 12px 24px
    ),
    var(--surface);
  border: 1px solid var(--border);
}
.model-placeholder-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(5rem, 14vw, 10rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
  color: rgba(255,255,255,0.08);
}
.model-placeholder-tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
  padding: 6px 14px;
  border: 1px solid rgba(0,180,255,0.3);
  border-radius: 999px;
}

/* Info side */
.model-info {
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
}
.model-info-inner { max-width: 480px; }
.model-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}
.model-name {
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 16px;
}
.model-desc {
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 36px;
}
.model-key-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 36px;
}
.model-spec-item { }
.model-spec-val {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.model-spec-val .unit {
  font-size: 0.5em;
  font-weight: 500;
  color: var(--muted);
  margin-left: 2px;
}
.model-spec-val.tba {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--dim);
  padding-top: 0.35rem;
}
.model-spec-lbl {
  display: block;
  font-size: 0.72rem;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}
.model-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 24px;
}
.model-cta {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.02em;
  transition: letter-spacing 0.3s ease, background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
.model-cta:hover { letter-spacing: 0.08em; }
.model-cta-secondary {
  display: inline-flex;
  align-items: center;
  padding: 10px 22px;
  background: #fff;
  color: #000;
  border: 1px solid #fff;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.model-cta-secondary:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  letter-spacing: 0.06em;
}

/* Slider arrows */
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.1);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: all 0.3s ease;
}
.slider-arrow:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-50%) scale(1.08);
}
.slider-prev { left: 24px; }
.slider-next { right: 24px; }

/* Dots */
.slider-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 32px 0;
}
.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  border: none;
  transition: all 0.3s ease;
}
.slider-dot.active {
  background: #fff;
  width: 24px;
  border-radius: 4px;
}

/* =============================================================
   PERFORMANCE
   ============================================================= */
.v-tabs-section {
  background: #000;
  padding: 100px 32px;
  border-bottom: 1px solid var(--border);
}
.v-tabs-inner {
  max-width: 1300px;
  margin: 0 auto;
}
.v-tabs-head { text-align: center; margin-bottom: 40px; }
.v-tabs-head .perf-label { color: var(--primary); }
.v-tabs-head h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 12px 0 0;
}
.v-tabs-bar {
  display: flex;
  justify-content: center;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px;
  width: fit-content;
  max-width: 100%;
  margin: 0 auto 40px;
}
.v-tab-btn {
  padding: 10px 24px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  background: none;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.3s ease;
}
.v-tab-btn:hover { color: #fff; }
.v-tab-btn.active { background: #fff; color: #000; }
.v-tabs-panel {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  min-height: 480px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.v-tab-pane { display: contents; }
.v-tab-pane[hidden] { display: none; }
.v-tab-img {
  position: relative;
  overflow: hidden;
  background: #000;
}
.v-tab-img img { width: 100%; height: 100%; object-fit: cover; }
.v-tab-content {
  padding: 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.v-tab-content .perf-label { color: var(--primary); }
.v-tab-content h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 10px 0 18px;
}
.v-tab-content p { color: var(--muted); line-height: 1.8; margin-bottom: 32px; }
.v-tab-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.v-tab-stats .perf-hl-val {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: block;
  margin-bottom: 4px;
}
.v-tab-stats .perf-hl-lbl { font-size: 0.78rem; color: var(--muted); line-height: 1.4; }
.v-tab-stats .perf-hl-lbl small { color: var(--dim); display: block; font-size: 0.7rem; }

.perf-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}
.perf-hl-val {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 6px;
}
.perf-hl-lbl {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
}
.perf-hl-lbl small {
  display: block;
  color: var(--dim);
  font-size: 0.72rem;
}

/* =============================================================
   PARTNERSHIPS
   ============================================================= */
.partners-section {
  background: #000;
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.partners-section::before {
  content: "";
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,229,160,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.partners-inner {
  position: relative;
  max-width: 1300px;
  margin: 0 auto;
  padding: 120px 32px;
}
.partners-head {
  max-width: 760px;
  margin-bottom: 64px;
}
.partners-head .perf-label { color: var(--green); }
.partners-head h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin: 12px 0 20px;
}
.partners-head p {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 640px;
}
.partners-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}
.partner-card {
  position: relative;
  padding: 40px;
  background: linear-gradient(180deg, rgba(255,255,255,0.025) 0%, rgba(255,255,255,0.01) 100%);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: border-color 0.4s var(--ease), transform 0.4s var(--ease), background 0.4s var(--ease);
}
.partner-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 14px;
  pointer-events: none;
  box-shadow: 0 0 0 1px transparent;
  transition: box-shadow 0.4s var(--ease);
}
.partner-card:hover {
  transform: translateY(-2px);
  border-color: rgba(0,229,160,0.35);
  background: linear-gradient(180deg, rgba(0,229,160,0.04) 0%, rgba(255,255,255,0.01) 100%);
}
.partner-card:hover::after {
  box-shadow: 0 0 32px rgba(0,229,160,0.08);
}
.partner-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: 24px;
  border-radius: 12px;
  background: rgba(0,229,160,0.08);
  border: 1px solid rgba(0,229,160,0.2);
  color: var(--green);
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
}
.partner-card:hover .partner-icon {
  background: rgba(0,229,160,0.14);
  border-color: rgba(0,229,160,0.4);
}
.partner-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: #fff;
}
.partner-card p {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.7;
}
.partners-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.partners-note {
  display: inline-flex;
  align-items: center;
  font-size: 0.8rem;
  color: var(--dim);
  letter-spacing: 0.02em;
}
.partners-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: #fff;
  color: #000;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease;
}
.partners-cta:hover {
  background: var(--green);
  color: #000;
}
.partners-cta svg {
  transition: transform 0.3s ease;
}
.partners-cta:hover svg {
  transform: translateX(4px);
}

/* =============================================================
   WHY ELECTRIC
   ============================================================= */
.why-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.why-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 120px 32px;
}
.why-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 64px;
  text-align: center;
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.why-item {
  background: var(--surface);
  padding: 48px 40px;
  text-align: center;
  transition: background 0.5s var(--ease);
}
.why-item:hover {
  background: rgba(255,255,255,0.025);
}
.why-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(3rem, 5vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--primary), var(--green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.why-number span {
  font-size: 0.5em;
  -webkit-text-fill-color: inherit;
}
.why-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.why-item p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 280px;
  margin: 0 auto;
}

/* =============================================================
   CALCULATOR
   ============================================================= */
.calc-section {
  background: #000;
  border-bottom: 1px solid var(--border);
}
.calc-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 120px 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.calc-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}
.calc-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.calc-desc {
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 28px;
  max-width: 420px;
}
.calc-assumptions {
  max-width: 460px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.calc-assumptions-intro {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.calc-assumptions-list {
  display: grid;
  grid-template-columns: 1fr auto;
  column-gap: 24px;
  row-gap: 10px;
  margin: 0 0 16px;
  font-size: 0.82rem;
}
.calc-assumptions-list dt {
  color: var(--dim);
}
.calc-assumptions-list dd {
  margin: 0;
  color: #fff;
  font-weight: 600;
  font-family: 'Space Grotesk', sans-serif;
  letter-spacing: -0.01em;
  text-align: right;
}
.calc-assumptions-note {
  font-size: 0.75rem;
  color: var(--dim);
  line-height: 1.6;
  font-style: italic;
}
.calc-toggle {
  display: inline-flex;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px;
  margin-bottom: 24px;
}
.calc-toggle-btn {
  padding: 8px 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  background: none;
  border: none;
  border-radius: 4px;
  transition: all 0.3s ease;
}
.calc-toggle-btn:hover { color: #fff; }
.calc-toggle-btn.active {
  background: #fff;
  color: #000;
}
.calc-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 32px;
}
.calc-field label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.calc-field input {
  width: 100%;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: #fff;
  font-size: 1.1rem;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  outline: none;
  transition: border-color 0.3s ease;
}
.calc-field input:focus {
  border-color: var(--primary);
}
.calc-results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.calc-result {
  background: var(--surface);
  padding: 28px 20px;
  text-align: center;
}
.calc-result-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}
.calc-result-value {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  transition: transform 0.4s var(--ease-out);
}
.calc-result-value.pulse {
  animation: calc-pulse 0.55s var(--ease-out);
}
@keyframes calc-pulse {
  0%   { transform: translateY(0); opacity: 1; }
  35%  { transform: translateY(-4px); opacity: 0.8; }
  100% { transform: translateY(0); opacity: 1; }
}
.calc-result-primary { color: var(--primary); }
.calc-result-green { color: var(--green); }

.calc-compare {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 32px;
}
.calc-compare-head,
.calc-compare-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
}
.calc-compare-row + .calc-compare-row,
.calc-compare-head + .calc-compare-row {
  border-top: 1px solid var(--border);
}
.calc-compare-head {
  background: rgba(255, 255, 255, 0.03);
}
.calc-compare-metric-label,
.calc-compare-col-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.calc-compare-col-label {
  text-align: right;
}
.calc-compare-col-label.calc-compare-col-ev {
  color: var(--green);
}
.calc-compare-metric {
  font-size: 0.85rem;
  color: var(--muted);
}
.calc-compare-val {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #fff;
  text-align: right;
  transition: transform 0.4s var(--ease-out);
}
.calc-compare-val.calc-compare-val-ev {
  color: var(--green);
}
.calc-compare-val.pulse {
  animation: calc-pulse 0.55s var(--ease-out);
}
.calc-results-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
}
.calc-framing {
  margin-top: 20px;
  font-size: 0.8rem;
  color: var(--dim);
  font-style: italic;
  line-height: 1.6;
}
.calc-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  padding: 16px 28px;
  background: #fff;
  color: #000;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 4px;
  transition: all 0.3s ease;
}
.calc-cta:hover {
  background: var(--primary);
  color: #fff;
}
.calc-cta svg {
  transition: transform 0.3s ease;
}
.calc-cta:hover svg {
  transform: translateX(4px);
}

/* =============================================================
   SPECS ACCORDION
   ============================================================= */
.specs-section {
  background: #000;
}
.specs-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 120px 32px;
}
.specs-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 48px;
  text-align: center;
}
.accordion { display: flex; flex-direction: column; }
.accordion-item {
  border-top: 1px solid var(--border);
}
.accordion-item:last-child {
  border-bottom: 1px solid var(--border);
}
.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 1rem;
  text-align: left;
  cursor: pointer;
  transition: color 0.3s ease, background 0.3s ease;
}
.accordion-header:hover {
  color: var(--primary);
  background: rgba(255,255,255,0.02);
}
.accordion-header.disabled,
.accordion-header[disabled] {
  cursor: not-allowed;
  color: var(--dim);
}
.accordion-header.disabled:hover,
.accordion-header[disabled]:hover { color: var(--dim); }
.accordion-header.disabled .accordion-model,
.accordion-header[disabled] .accordion-model { color: var(--dim); }
.accordion-model {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  min-width: 100px;
}
.accordion-type {
  flex: 1;
  font-size: 0.8rem;
  color: var(--dim);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.accordion-badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(0, 180, 255, 0.12);
  color: var(--primary);
  border: 1px solid rgba(0, 180, 255, 0.3);
  margin-right: 4px;
  white-space: nowrap;
}
.accordion-chevron {
  transition: transform 0.3s ease;
}
.accordion-item.open .accordion-chevron {
  transform: rotate(180deg);
}
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.55s var(--ease), padding 0.55s var(--ease);
  padding: 0;
}
.accordion-item.open .accordion-body {
  max-height: 800px;
  padding: 0 0 32px;
}
.brochure-btn {
  display: flex;
  width: fit-content;
  align-items: center;
  gap: 10px;
  margin: 24px auto 0;
  padding: 12px 24px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 4px;
  transition: all 0.3s ease;
}
.brochure-btn:hover {
  background: #fff;
  color: #000;
  border-color: #fff;
}
.spec-grid {
  display: flex;
  flex-direction: column;
}
.spec-row {
  display: flex;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-size: 0.9rem;
}
.spec-row:last-child { border-bottom: none; }
.spec-row span:first-child { color: var(--muted); }
.spec-row span:last-child { font-weight: 600; text-align: right; }
.spec-tba {
  padding: 14px 0;
  font-size: 0.9rem;
  color: var(--muted);
  font-style: italic;
}

/* Catalog Download */
.catalog-download {
  text-align: center;
  margin-top: 48px;
}
.catalog-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
  padding: 16px 36px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 4px;
  transition: all 0.3s ease;
}
.catalog-btn:hover {
  background: #fff;
  color: #000;
}
.catalog-btn:hover svg {
  stroke: #000;
}

/* =============================================================
   FOOTER
   ============================================================= */
.footer {
  background: #000;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 60px 32px 32px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-tagline {
  font-size: 0.85rem;
  color: var(--dim);
  margin-top: 12px;
}
.footer-established {
  font-size: 0.7rem;
  color: var(--dim);
  margin-top: 18px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.footer-col { }
.footer-col-title {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-col .footer-links a {
  cursor: pointer;
}
.footer-links a {
  font-size: 0.8rem;
  color: var(--muted);
  transition: color 0.3s ease;
}
.footer-links a:hover { color: #fff; }
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-end;
}
.footer-contact a {
  font-size: 0.8rem;
  color: var(--muted);
  transition: color 0.3s ease;
}
.footer-contact a:hover { color: var(--primary); }
.footer-info { max-width: 280px; }
.footer-info-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
}
.footer-info-list dt {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 4px;
}
.footer-info-list dd {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.55;
  margin: 0;
}
.footer-info-list dd a {
  color: var(--muted);
  transition: color 0.3s ease;
}
.footer-info-list dd a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  text-align: center;
}
.footer-bottom span {
  font-size: 0.7rem;
  color: var(--dim);
}

/* =============================================================
   QUOTE FORM
   ============================================================= */
.quote-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.quote-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 120px 32px 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.quote-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}
.quote-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.quote-desc {
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 420px;
}
.quote-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.hp-field {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.quote-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.quote-field label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.quote-field label .required {
  color: var(--primary);
}
.quote-field label .optional {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--dim);
  font-size: 0.7rem;
}
.quote-field input,
.quote-field textarea,
.quote-field select {
  width: 100%;
  padding: 16px 20px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: #fff;
  font-size: 1rem;
  font-family: 'Inter', -apple-system, sans-serif;
  font-weight: 400;
  outline: none;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.quote-field input::placeholder,
.quote-field textarea::placeholder {
  color: var(--dim);
}
.quote-field input:focus,
.quote-field textarea:focus,
.quote-field select:focus {
  border-color: var(--primary);
  background: rgba(0,0,0,0.6);
}
.quote-field textarea {
  resize: vertical;
  min-height: 120px;
}
.quote-field select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding-right: 48px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat: no-repeat;
  background-position: right 18px center;
  cursor: pointer;
}
.quote-field select:invalid { color: var(--dim); }
.quote-field select option { background: #111; color: #fff; }
.quote-field select option[disabled] { color: var(--dim); }
.quote-field input.error,
.quote-field textarea.error,
.quote-field select.error {
  border-color: #ff4d4d;
}
.quote-submit {
  padding: 18px 40px;
  background: #fff;
  color: #000;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease;
  align-self: flex-start;
}
.quote-submit:hover {
  background: var(--primary);
  color: #fff;
}
.quote-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.quote-status {
  font-size: 0.85rem;
  margin-top: 4px;
  min-height: 1.4em;
}
.quote-status.success {
  color: var(--green);
}
.quote-status.error {
  color: #ff4d4d;
}

/* =============================================================
   MODALS
   ============================================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
.modal {
  position: relative;
  width: 100%;
  max-width: 640px;
  max-height: 85vh;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: translateY(16px) scale(0.98);
  transition: transform 0.35s var(--ease-out);
}
.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}
.modal-close {
  align-self: flex-end;
  flex-shrink: 0;
  margin: 12px 12px 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.3s ease;
}
.modal-close:hover { background: rgba(255,255,255,0.15); }
.modal-content {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 16px 48px 24px;
  -webkit-overflow-scrolling: touch;
}
.modal-content h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  color: #fff;
}
.modal-content h3 {
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary);
  margin-top: 24px;
  margin-bottom: 8px;
}
.modal-content p {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 12px;
}
.modal-content p.modal-meta {
  font-size: 0.75rem;
  color: var(--dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.modal-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.modal-content a:hover { color: var(--green); }

.modal-content .modal-intro {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.6;
  margin-top: 8px;
  margin-bottom: 28px;
}
.modal-form .quote-submit { align-self: stretch; }
.modal-form-note {
  font-size: 0.78rem;
  color: var(--dim);
  line-height: 1.5;
  margin: 4px 0 0;
}

@media (max-width: 600px) {
  .modal-overlay { padding: 0; }
  .modal {
    width: 100%;
    max-width: none;
    height: 100%;
    max-height: none;
    border-radius: 0;
    border: none;
    transform: translateY(20px);
  }
  .modal-overlay.open .modal { transform: translateY(0); }
  .modal-content { padding: 16px 24px 20px; }
}

/* =============================================================
   RESPONSIVE
   ============================================================= */
@media (max-width: 1024px) {
  .model-slide {
    grid-template-columns: 1fr;
  }
  .model-media { min-height: 50vh; }
  .model-video-placeholder { min-height: 50vh; }
  .model-info { padding: 48px 32px; }
  .v-tabs-panel { grid-template-columns: 1fr; min-height: 0; }
  .v-tab-img { height: 280px; }
  .v-tab-content { padding: 40px 32px; }
  .calc-inner { grid-template-columns: 1fr; gap: 48px; }
  .why-grid { grid-template-columns: 1fr; }
  .quote-inner { grid-template-columns: 1fr; gap: 48px; }
  .partners-grid { gap: 16px; }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .header-cta { display: none; }
  .hamburger { display: block; }

  /* --- Consistent side padding: 20px --- */
  .header-inner { padding: 0 20px; }
  .hero-content { padding: 0 20px; }
  .models-header { padding: 0 20px 32px; }
  .v-tabs-section { padding: 80px 20px; }
  .v-tab-content { padding: 32px 20px; }
  .v-tab-img { height: 220px; }
  .why-inner { padding: 80px 20px; }
  .calc-inner { padding: 80px 20px; }
  .specs-inner { padding: 80px 20px; }
  .quote-inner { padding: 80px 20px 56px; }
  .footer-inner { padding: 48px 20px 24px; }

  /* --- Quote Form --- */
  .quote-form-row { grid-template-columns: 1fr; }
  .quote-submit { width: 100%; text-align: center; }

  /* --- Hero --- */
  .hero { min-height: 600px; }
  .hero-scroll-hint { display: none; }
  .hero-stats {
    bottom: 40px;
    padding: 0 24px;
    gap: 22px 36px;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 360px;
  }
  .hero-stat { flex: 0 0 calc(50% - 18px); }
  .hero-stat-value { font-size: 1.6rem; }
  .hero-stat-divider { display: none; }

  /* --- Models --- */
  .models-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .models-tabs { overflow-x: auto; width: 100%; }
  .model-tab { white-space: nowrap; padding: 8px 18px; font-size: 0.75rem; }
  .model-info { padding: 40px 20px; }
  .model-key-specs { gap: 16px; }
  .model-spec-val { font-size: 1.4rem; }
  .slider-arrow { display: none; }

  /* --- Why GAC tabs --- */
  .v-tabs-bar {
    width: 100%;
    overflow-x: auto;
    justify-content: flex-start;
    scrollbar-width: none;
  }
  .v-tabs-bar::-webkit-scrollbar { display: none; }
  .v-tab-btn { padding: 10px 18px; font-size: 0.72rem; }
  .v-tab-content h3 { font-size: 1.6rem; }
  .v-tab-stats { gap: 12px; }
  .v-tab-stats .perf-hl-val { font-size: 1.2rem; }
  .v-tab-stats .perf-hl-lbl { font-size: 0.7rem; }
  .v-tab-stats .perf-hl-lbl small { font-size: 0.65rem; }

  /* --- Partnerships --- */
  .partners-inner { padding: 80px 20px; }
  .partners-grid { grid-template-columns: 1fr; gap: 14px; }
  .partner-card { padding: 28px; }
  .partner-card h3 { font-size: 1.2rem; }
  .partners-head { margin-bottom: 40px; }
  .partners-head p { font-size: 0.95rem; }
  .partners-footer { flex-direction: column; align-items: flex-start; }
  .partners-cta { width: 100%; justify-content: center; }

  /* --- Calculator --- */
  .calc-results { grid-template-columns: 1fr; }
  .calc-assumptions {
    flex-direction: column;
    gap: 8px;
  }
  .calc-compare-head,
  .calc-compare-row {
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 12px;
    padding: 14px 16px;
  }
  .calc-compare-metric { font-size: 0.8rem; }
  .calc-compare-val { font-size: 0.95rem; }
  .calc-cta {
    width: 100%;
    justify-content: center;
  }

  /* --- Specs --- */
  .accordion-model { min-width: 70px; font-size: 1.2rem; }
  .accordion-type { font-size: 0.7rem; }

  /* --- Footer --- */
  .footer-top { flex-direction: column; gap: 32px; }
  .footer-links { flex-wrap: wrap; gap: 12px; }
  .footer-contact { align-items: flex-start; }

  /* --- Standardized paragraph text on mobile --- */
  .hero-sub,
  .model-desc,
  .v-tab-content p,
  .why-item p,
  .calc-desc,
  .quote-desc,
  .modal-content p { font-size: 0.9rem; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 3rem; }
  .hero-stats {
    gap: 18px 28px;
    bottom: 32px;
    max-width: 320px;
  }
  .hero-stat-value { font-size: 1.3rem; }
  .hero-stat-label { font-size: 0.6rem; letter-spacing: 0.06em; }

  .models-section { padding-top: 72px; }
  .model-name { font-size: 2.5rem; }
  .model-key-specs { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .model-spec-val { font-size: 1.2rem; }

  .v-tabs-head h2 { font-size: 1.8rem; }
  .v-tab-content h3 { font-size: 1.4rem; }

  .partners-head h2 { font-size: 1.8rem; }

  .why-title { font-size: 1.8rem; margin-bottom: 40px; }
  .why-number { font-size: 3rem; }
  .why-item { padding: 32px 20px; }

  .calc-title { font-size: 1.8rem; }

  .specs-title { font-size: 1.8rem; }
  .spec-row { flex-direction: column; gap: 4px; }
  .spec-row span:last-child { text-align: left; }
  .accordion-header { gap: 12px; padding: 20px 0; }
  .accordion-model { min-width: 60px; font-size: 1rem; }
  .accordion-type { font-size: 0.65rem; }

  .footer-links { gap: 12px; }
  .footer-links a { font-size: 0.75rem; }
}

/* =============================================================
   REDUCED MOTION
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero-eyebrow,
  .hero-title,
  .hero-sub,
  .hero-stats,
  .hero-scroll-hint { opacity: 1; }
  .scroll-progress { display: none; }
}