/* ==========================================================================
   BATTERY PASSPORT NETWORK — INDUSTRIAL DESIGN SYSTEM
   Palette inspired by materials inside a battery pack:
   Brushed graphite, pale ceramic surfaces, fine etched lines,
   and vivid battery emerald / cobalt accents.
   ========================================================================== */

:root {
  /* Graphite & Dark Metals */
  --graphite-950: #080D0B;
  --graphite-900: #0D1411;
  --graphite-850: #121B17;
  --graphite-800: #18231E;
  --graphite-750: #202E28;
  --graphite-card: #111A16;
  --graphite-border: rgba(255, 255, 255, 0.1);
  --graphite-border-subtle: rgba(255, 255, 255, 0.06);

  /* Pale Ceramic Surfaces */
  --ceramic-50: #F8FAF9;
  --ceramic-100: #F0F4F2;
  --ceramic-200: #E5ECE8;
  --ceramic-300: #D8E2DD;
  --ceramic-card: #FFFFFF;
  --ceramic-border: rgba(13, 20, 17, 0.12);
  --ceramic-border-subtle: rgba(13, 20, 17, 0.07);

  /* Battery Cell Materials & Brand Accents */
  --battery-green: #14D97D;
  --battery-green-hover: #0EAE63;
  --battery-green-dim: #0EAE63;
  --battery-green-glow: rgba(20, 217, 125, 0.22);
  --battery-cyan: #3CF2C4;
  --battery-cyan-dim: #26C9A2;
  --battery-cobalt: #2E8FE0;
  --battery-cobalt-hover: #1E6FB6;
  --battery-copper: #D9822B;
  --battery-aluminum: #BAC7D5;

  /* Typography Colors */
  --text-dark: #0A1411;
  --text-mid: #2C3E37;
  --text-muted: #566D64;
  --text-light: #8DA198;
  --text-white: #FFFFFF;
  --text-white-dim: rgba(255, 255, 255, 0.82);
  --text-white-muted: rgba(255, 255, 255, 0.6);

  /* Typography Scales */
  --font-heading: 'Barlow Semi Condensed', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Aliases & Compatibility for inline styles */
  --display: var(--font-heading);
  --mono: var(--font-mono);
  --font: var(--font-body);
  --ink: var(--graphite-900);
  --ink-mid: var(--graphite-850);
  --ink-deep: var(--graphite-950);
  --ink-card: var(--graphite-card);
  --blue: var(--battery-green);
  --blue-dim: var(--battery-green-dim);
  --green: var(--battery-cyan);
  --amber: var(--battery-cobalt);
  --amber-dim: var(--battery-cobalt-hover);
  --rule: var(--ceramic-border);
  --rule-w: var(--graphite-border);
  --card-border: var(--ceramic-border);

  /* Grid & Spacing */
  --max-w: 1200px;
  --nav-h: 68px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--text-dark);
  background: var(--ceramic-50);
  overflow-x: hidden;
  position: relative;
  line-height: 1.65;
}

/* Subtle micro-texture overlay evoking brushed graphite / ceramic grains */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 10;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--graphite-950);
}
::-webkit-scrollbar-thumb {
  background: var(--graphite-750);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--battery-green-dim);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  font-family: inherit;
  cursor: pointer;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 48px);
}

/* Deep link flash highlight */
.deep-link-flash {
  animation: flashHighlight 1.8s ease-out;
}
@keyframes flashHighlight {
  0% {
    box-shadow: 0 0 0 4px var(--battery-green), 0 0 24px var(--battery-green-glow);
    border-color: var(--battery-green) !important;
  }
  100% {
    box-shadow: none;
  }
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-h);
  background: rgba(13, 20, 17, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--graphite-border);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 clamp(16px, 4vw, 48px);
  justify-content: space-between;
  transition: background var(--transition-normal);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  text-decoration: none;
  flex-shrink: 0;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-white);
  transition: opacity var(--transition-fast);
}
.nav-logo:hover {
  opacity: 0.92;
}

.nav-logo-icon {
  width: 34px;
  height: 34px;
  background: var(--battery-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px var(--battery-green-glow);
  flex-shrink: 0;
}
.nav-logo-icon i {
  color: var(--graphite-950);
  font-size: 13px;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.nav-logo-text span {
  font-size: 0.58rem;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--battery-cyan);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-top: 3px;
}

/* Desktop Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 4px;
}
.nav-links li {
  position: relative;
  display: flex;
  align-items: center;
}
.nav-links li:not(:last-child)::after {
  content: '/';
  color: rgba(255, 255, 255, 0.16);
  font-family: var(--font-mono);
  font-size: 11px;
  margin: 0 4px;
}
.nav-links li button {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  white-space: nowrap;
  position: relative;
}
.nav-links li button:hover {
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.05);
}
.nav-links li button.active {
  color: var(--text-white);
  font-weight: 600;
}
.nav-links li button.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10px;
  right: 10px;
  height: 2px;
  background: var(--battery-green);
  border-radius: 1px;
  box-shadow: 0 0 8px var(--battery-green);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-demo-nav {
  background: var(--battery-green);
  color: var(--graphite-950);
  border: 1px solid var(--battery-green);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.68rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.8px;
  text-transform: uppercase;
  white-space: nowrap;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 10px rgba(20, 217, 125, 0.25);
}
.btn-demo-nav:hover {
  background: var(--battery-green-hover);
  border-color: var(--battery-green-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(20, 217, 125, 0.35);
}

/* Mobile Hamburger Toggle */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: 1px solid var(--graphite-border);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.hamburger span {
  width: 20px;
  height: 2px;
  background: #FFFFFF;
  border-radius: 1px;
  transition: var(--transition-normal);
  display: block;
}
.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);
}

/* Mobile Nav Drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  width: 100%;
  background: var(--graphite-950);
  padding: 12px 24px 28px;
  flex-direction: column;
  gap: 2px;
  z-index: 999;
  border-bottom: 1px solid var(--graphite-border);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}
.mobile-nav.open {
  display: flex;
}
.mobile-nav button {
  background: none;
  border: none;
  color: var(--text-white-dim);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 14px 4px;
  border-bottom: 1px solid var(--graphite-border-subtle);
  cursor: pointer;
  font-family: var(--font-mono);
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}
.mobile-nav button:hover {
  color: var(--battery-green);
  padding-left: 6px;
}
.mobile-nav .mob-cta {
  margin-top: 18px;
  background: var(--battery-green);
  color: var(--graphite-950);
  border: none;
  padding: 14px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  font-family: var(--font-mono);
  text-align: center;
  box-shadow: 0 4px 14px rgba(20, 217, 125, 0.25);
}

/* ==========================================================================
   PAGE MANAGEMENT
   ========================================================================== */
.page {
  display: none;
  min-height: 100vh;
  padding-top: var(--nav-h);
}
.page.active {
  display: block;
}

/* ==========================================================================
   SHARED HEADINGS & TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.015em;
}

.section-h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.75rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 0;
  max-width: 22ch;
}
.h2-dark {
  color: var(--text-dark);
}
.h2-white {
  color: var(--text-white);
}

.label-tag, .label-tag-w {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.label-tag {
  color: var(--battery-green-dim);
}
.label-tag-w {
  color: var(--battery-green);
}
.label-tag::before, .label-tag-w::before {
  content: '';
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}

/* Section divider with precision accent */
.divider {
  width: 100%;
  height: 1px;
  margin: 20px 0 28px;
  background: var(--ceramic-border);
  position: relative;
}
.divider.div-blue::before {
  content: '';
  position: absolute;
  left: 0;
  top: -1px;
  width: 48px;
  height: 3px;
  border-radius: 2px;
  background: var(--battery-green);
}
.divider.div-white {
  background: var(--graphite-border);
}
.divider.div-white::before {
  content: '';
  position: absolute;
  left: 0;
  top: -1px;
  width: 48px;
  height: 3px;
  border-radius: 2px;
  background: var(--battery-green);
}

/* Paragraphs constrained to 60-75 characters per line */
.para-d {
  color: var(--text-mid);
  line-height: 1.75;
  font-size: 1.05rem;
  max-width: 65ch;
}
.para-w {
  color: var(--text-white-dim);
  line-height: 1.75;
  font-size: 1.05rem;
  max-width: 65ch;
}

/* Buttons */
.btn-p {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--battery-green);
  color: var(--graphite-950);
  padding: 13px 26px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  transition: all var(--transition-fast);
  font-family: var(--font-mono);
  border: 1px solid var(--battery-green);
  cursor: pointer;
  box-shadow: 0 4px 14px var(--battery-green-glow);
}
.btn-p:hover {
  background: var(--battery-green-hover);
  border-color: var(--battery-green-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(20, 217, 125, 0.35);
}

.btn-s {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1.5px solid var(--ceramic-border);
  color: var(--text-dark);
  padding: 12px 26px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  transition: all var(--transition-fast);
  font-family: var(--font-mono);
  background: transparent;
  cursor: pointer;
}
.btn-s:hover {
  border-color: var(--battery-green);
  color: var(--battery-green-dim);
  background: rgba(20, 217, 125, 0.08);
  transform: translateY(-1px);
}

/* Dark section secondary button */
.sec-dark .btn-s,
.hero .btn-s {
  border-color: var(--graphite-border);
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.03);
}
.sec-dark .btn-s:hover,
.hero .btn-s:hover {
  border-color: var(--battery-green);
  color: var(--battery-green);
  background: rgba(20, 217, 125, 0.1);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.badge-c {
  background: rgba(20, 217, 125, 0.1);
  color: var(--battery-green-dim);
  border: 1px solid rgba(20, 217, 125, 0.35);
}
.badge-g {
  background: rgba(46, 143, 224, 0.1);
  color: var(--battery-cobalt);
  border: 1px solid rgba(46, 143, 224, 0.4);
}
.bdot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

/* ==========================================================================
   HERO SECTION (DARK & IMMERSIVE BRUSHED GRAPHITE)
   ========================================================================== */

.hero {
  background: 
    radial-gradient(ellipse 65% 55% at 85% 35%, rgba(20, 217, 125, 0.12), transparent 70%),
    radial-gradient(ellipse 50% 45% at 70% 65%, rgba(46, 143, 224, 0.1), transparent 70%),
    radial-gradient(circle at 15% 15%, rgba(255, 255, 255, 0.03), transparent 50%),
    var(--graphite-900);
  color: var(--text-white);
  padding: clamp(48px, 7vw, 92px) 0 clamp(56px, 8vw, 96px);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--graphite-border);
}

/* Fine etched technical grid accent in hero */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  opacity: 0.6;
}

.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 48px);
  display: grid;
  grid-template-columns: 1.12fr 1fr;
  gap: clamp(32px, 5vw, 68px);
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--graphite-border);
  border-radius: var(--radius-full);
  padding: 6px 16px 6px 12px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--battery-cyan);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 24px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}
.hero-bdot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--battery-green);
  box-shadow: 0 0 10px var(--battery-green);
  animation: beaconPulse 2s infinite;
}
@keyframes beaconPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.3rem, 4.8vw, 3.85rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--text-white);
  margin-bottom: 0;
}
.hero h1 .blue {
  color: var(--battery-green);
  font-weight: 700;
  display: inline;
}

.hero-rule {
  width: 64px;
  height: 3px;
  background: var(--battery-green);
  border-radius: 2px;
  margin: 22px 0 24px;
}

.hero-body {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-white-dim);
  max-width: 62ch;
  margin-bottom: 32px;
}

.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

/* ==========================================================================
   HERO ARTWORK: ISOMETRIC LAYERED BATTERY CELL + PRESERVED DASHBOARD
   ========================================================================== */

.hero-visual-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

/* Background Circuit Network SVG (Placed behind artwork on the right) */
.hero-circuits {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 140%;
  height: 140%;
  pointer-events: none;
  z-index: 0;
  overflow: visible;
}

/* Circuit trace path styles */
.circuit-trace {
  fill: none;
  stroke: rgba(20, 217, 125, 0.12);
  stroke-width: 1.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.circuit-node {
  fill: rgba(20, 217, 125, 0.2);
  stroke: rgba(20, 217, 125, 0.35);
  stroke-width: 1;
}

/* Staggered Traveling Pulses along circuit traces (8-12s cycle) */
.circuit-pulse {
  fill: none;
  stroke-linecap: round;
  animation-duration: 10s;
  animation-iteration-count: infinite;
  animation-timing-function: ease-in-out;
}

.pulse-primary {
  stroke: var(--battery-green);
  stroke-width: 2.2;
  stroke-dasharray: 60 400;
  animation-name: pulseTravelPrimary;
}

.pulse-secondary {
  stroke: var(--battery-cyan);
  stroke-width: 1.8;
  stroke-dasharray: 45 350;
  animation-name: pulseTravelSecondary;
  animation-delay: 4.8s;
}

.pulse-tertiary {
  stroke: var(--battery-cobalt);
  stroke-width: 1.6;
  stroke-dasharray: 40 380;
  animation-name: pulseTravelTertiary;
  animation-delay: 8.2s;
}

@keyframes pulseTravelPrimary {
  0% {
    stroke-dashoffset: 460;
    opacity: 0;
  }
  15% {
    opacity: 0.9;
  }
  75% {
    opacity: 0.8;
  }
  100% {
    stroke-dashoffset: 0;
    opacity: 0;
  }
}

@keyframes pulseTravelSecondary {
  0% {
    stroke-dashoffset: 395;
    opacity: 0;
  }
  20% {
    opacity: 0.85;
  }
  80% {
    opacity: 0.75;
  }
  100% {
    stroke-dashoffset: 0;
    opacity: 0;
  }
}

@keyframes pulseTravelTertiary {
  0% {
    stroke-dashoffset: 420;
    opacity: 0;
  }
  20% {
    opacity: 0.8;
  }
  80% {
    opacity: 0.7;
  }
  100% {
    stroke-dashoffset: 0;
    opacity: 0;
  }
}

/* Pause animation when hero is off-screen */
.animation-paused .circuit-pulse {
  animation-play-state: paused !important;
}

/* Static version for reduced motion */
@media (prefers-reduced-motion: reduce) {
  .circuit-pulse {
    animation: none !important;
    opacity: 0.25 !important;
  }
  .hero-bdot {
    animation: none !important;
  }
}

/* The Assembly Container */
.battery-pack-assembly {
  position: relative;
  width: 100%;
  max-width: 480px;
  z-index: 1;
}

/* Layered Isometric Battery Cells SVG Illustration (Believable depth, metallic edges, soft shadows) */
.battery-cells-svg {
  position: absolute;
  top: -28px;
  right: -24px;
  width: 320px;
  height: 240px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.85;
  filter: drop-shadow(0 14px 28px rgba(0, 0, 0, 0.75));
}

/* Preserved BPN Dashboard Card (Refined in Brushed Graphite with Laser-Etched Borders) */
.dash-card {
  position: relative;
  z-index: 2;
  background: linear-gradient(145deg, rgba(24, 35, 30, 0.92) 0%, rgba(13, 20, 17, 0.96) 100%);
  border: 1px solid var(--graphite-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 
    0 24px 48px -12px rgba(0, 0, 0, 0.7),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}
.dash-card:hover {
  border-color: rgba(20, 217, 125, 0.35);
  transform: translateY(-2px);
}

.dash-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--graphite-border-subtle);
}
.dash-lbl {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--battery-cyan);
  margin-bottom: 3px;
}
.dash-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-white);
}

.live-wrap {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(20, 217, 125, 0.12);
  border: 1px solid rgba(20, 217, 125, 0.3);
  border-radius: var(--radius-full);
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--battery-green);
  letter-spacing: 0.8px;
}
.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--battery-green);
  box-shadow: 0 0 8px var(--battery-green);
  animation: beaconPulse 1.8s infinite;
}

.score-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--graphite-border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  transition: background var(--transition-fast);
}
.score-row:hover {
  background: rgba(255, 255, 255, 0.05);
}

.s-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}
.si-c {
  background: rgba(20, 217, 125, 0.14);
  color: var(--battery-green);
  border: 1px solid rgba(20, 217, 125, 0.3);
}
.si-g {
  background: rgba(46, 143, 224, 0.14);
  color: var(--battery-cobalt);
  border: 1px solid rgba(46, 143, 224, 0.3);
}
.si-e {
  background: rgba(235, 87, 87, 0.14);
  color: #EB5757;
  border: 1px solid rgba(235, 87, 87, 0.3);
}

.score-lbl {
  font-size: 0.85rem;
  color: var(--text-white-dim);
  font-weight: 500;
  flex-grow: 1;
}
.score-val {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-white);
}

.score-big {
  margin-top: 14px;
  padding: 16px;
  background: linear-gradient(135deg, rgba(20, 217, 125, 0.1) 0%, rgba(46, 143, 224, 0.08) 100%);
  border: 1px solid rgba(20, 217, 125, 0.25);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 16px;
}
.sb-num {
  font-family: var(--font-heading);
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--battery-green);
  line-height: 1;
  letter-spacing: -0.02em;
}
.sb-info .lbl {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-white);
  line-height: 1.25;
}
.sb-info .sub {
  font-size: 0.72rem;
  color: var(--battery-cyan);
  font-family: var(--font-mono);
  margin-top: 3px;
}

/* ==========================================================================
   SECTIONS: LIGHT (PALE CERAMIC), DARK (GRAPHITE), ALT
   ========================================================================== */

/* Dark Section (Brushed Graphite) */
.sec-dark {
  background: var(--graphite-900);
  color: var(--text-white);
  padding: clamp(60px, 8vw, 96px) 0;
  position: relative;
  border-bottom: 1px solid var(--graphite-border);
}
.sec-dark::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* Light Section (Pale Ceramic) */
.sec-light {
  background: var(--ceramic-50);
  color: var(--text-dark);
  padding: clamp(60px, 8vw, 96px) 0;
  position: relative;
}

/* Alt Section (Soft Ceramic Grey) */
.sec-alt {
  background: var(--ceramic-100);
  color: var(--text-dark);
  padding: clamp(60px, 8vw, 96px) 0;
  border-top: 1px solid var(--ceramic-border-subtle);
  border-bottom: 1px solid var(--ceramic-border-subtle);
}

/* ==========================================================================
   STATS GRID (ROI SECTION)
   ========================================================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 40px;
}
.stat-card {
  background: var(--graphite-card);
  border: 1px solid var(--graphite-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}
.stat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(20, 217, 125, 0.35);
}
.stat-num {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 3.8vw, 3.2rem);
  font-weight: 700;
  color: var(--battery-green);
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.stat-lbl {
  font-size: 0.88rem;
  color: var(--text-white-dim);
  line-height: 1.55;
}

/* ==========================================================================
   PLATFORM GRID & EXPANDABLE CARDS
   ========================================================================== */

.plat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
  margin-top: 36px;
}

.plat-card {
  background: var(--ceramic-card);
  border: 1px solid var(--ceramic-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(13, 20, 17, 0.04);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}
.plat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(13, 20, 17, 0.08);
  border-color: rgba(20, 217, 125, 0.4);
}

.plat-img {
  position: relative;
  height: 190px;
  overflow: hidden;
  background: var(--graphite-900);
}
.plat-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.plat-card:hover .plat-img img {
  transform: scale(1.04);
}
.pi-tag {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(13, 20, 17, 0.8);
  backdrop-filter: blur(8px);
  color: var(--battery-cyan);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.plat-inner {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.el-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--battery-green-dim);
  margin-bottom: 8px;
  font-weight: 600;
}

.plat-inner h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 12px;
  line-height: 1.2;
}

.plat-inner p {
  font-size: 0.92rem;
  color: var(--text-mid);
  line-height: 1.65;
  margin-bottom: 16px;
  flex-grow: 1;
}

.more-txt {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, opacity 0.3s ease, margin 0.3s ease;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  border-top: 1px dashed var(--ceramic-border);
  padding-top: 0;
  margin-top: 0;
}
.plat-card.open .more-txt {
  max-height: 300px;
  opacity: 1;
  padding-top: 14px;
  margin-top: 8px;
  margin-bottom: 16px;
}

.expand-btn {
  align-self: flex-start;
  background: none;
  border: 1px solid var(--ceramic-border);
  padding: 7px 16px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-dark);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: all var(--transition-fast);
  cursor: pointer;
}
.expand-btn:hover,
.plat-card.open .expand-btn {
  background: rgba(20, 217, 125, 0.1);
  border-color: var(--battery-green);
  color: var(--battery-green-dim);
}

/* ==========================================================================
   WHY GRID & VALUE CARDS
   ========================================================================== */

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 36px;
}

.why-card {
  background: var(--ceramic-card);
  border: 1px solid var(--ceramic-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 4px 18px rgba(13, 20, 17, 0.03);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}
.why-card:hover {
  transform: translateY(-2px);
  border-color: rgba(20, 217, 125, 0.35);
  box-shadow: 0 10px 24px rgba(13, 20, 17, 0.06);
}

.why-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(20, 217, 125, 0.1);
  border: 1px solid rgba(20, 217, 125, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--battery-green-dim);
  font-size: 18px;
  margin-bottom: 20px;
}

.why-card h4 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.why-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   PROCESS / HOW IT WORKS STEPS
   ========================================================================== */

.process-step {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
  margin-bottom: clamp(48px, 7vw, 80px);
}
.process-step:last-child {
  margin-bottom: 0;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--battery-green-dim);
  font-weight: 600;
  margin-bottom: 12px;
}

.step-h3 {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.15;
  margin-bottom: 18px;
}

.step-p {
  font-size: 0.98rem;
  color: var(--text-mid);
  line-height: 1.75;
  margin-bottom: 14px;
  max-width: 65ch;
}
.step-p:last-of-type {
  margin-bottom: 0;
}

.step-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--ceramic-border);
  box-shadow: 0 16px 36px rgba(13, 20, 17, 0.08);
  height: 320px;
  background: var(--graphite-900);
}
.step-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================================
   MARKET ANALYSIS & CHARTS
   ========================================================================== */

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(460px, 1fr));
  gap: 28px;
  margin-top: 36px;
}

.chart-card {
  background: var(--ceramic-card);
  border: 1px solid var(--ceramic-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 4px 20px rgba(13, 20, 17, 0.04);
  display: flex;
  flex-direction: column;
}

.chart-card h4 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 4px;
}
.chart-card p {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.chart-wrap {
  position: relative;
  width: 100%;
  height: 300px;
}

/* Comparison Table */
.comp-wrap {
  overflow-x: auto;
  margin-top: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--ceramic-border);
  box-shadow: 0 4px 24px rgba(13, 20, 17, 0.04);
  background: var(--ceramic-card);
}

.comp-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.comp-table th,
.comp-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--ceramic-border);
}

.comp-table th {
  background: var(--ceramic-100);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-dark);
  letter-spacing: 0.5px;
}
.comp-table th.hi {
  background: rgba(20, 217, 125, 0.12);
  color: var(--text-dark);
  border-left: 2px solid var(--battery-green);
  border-right: 2px solid var(--battery-green);
}

.comp-table td.hi {
  background: rgba(20, 217, 125, 0.05);
  font-weight: 600;
  border-left: 2px solid var(--battery-green);
  border-right: 2px solid var(--battery-green);
}

.comp-table td.no {
  color: #8A9993;
}
.comp-table td.yes {
  color: var(--battery-green-dim);
}

/* ==========================================================================
   PRICING
   ========================================================================== */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  margin-top: 40px;
  align-items: stretch;
}

.price-card {
  background: var(--ceramic-card);
  border: 1px solid var(--ceramic-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 4px 20px rgba(13, 20, 17, 0.04);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.price-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(13, 20, 17, 0.08);
}

.price-card.featured {
  border: 2px solid var(--battery-green);
  box-shadow: 0 8px 32px var(--battery-green-glow);
}

.feat-lbl {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--battery-green);
  color: var(--graphite-950);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  white-space: nowrap;
}

.price-tier {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--battery-green-dim);
  font-weight: 600;
  margin-bottom: 8px;
}

.price-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.price-amount {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.price-amount span {
  font-size: 1rem;
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--text-muted);
}

.price-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--ceramic-border);
}

.price-feat {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
  flex-grow: 1;
}
.price-feat li {
  font-size: 0.88rem;
  color: var(--text-mid);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}
.price-feat li::before {
  content: '✓';
  color: var(--battery-green-dim);
  font-weight: 700;
  flex-shrink: 0;
}

/* ==========================================================================
   FAQ ACCORDION
   ========================================================================== */

.faq-wrap {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 36px;
  max-width: 860px;
}

.faq-item {
  background: var(--ceramic-card);
  border: 1px solid var(--ceramic-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.faq-item:hover {
  border-color: rgba(20, 217, 125, 0.4);
}
.faq-item.open {
  border-color: var(--battery-green);
  box-shadow: 0 4px 18px rgba(20, 217, 125, 0.1);
}

.faq-q {
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
  gap: 16px;
}
.faq-q h4 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.3;
}
.faq-icon {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--battery-green-dim);
  transition: transform var(--transition-normal);
  line-height: 1;
  font-weight: 500;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-body {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.35s ease;
  font-size: 0.95rem;
  color: var(--text-mid);
  line-height: 1.75;
  padding: 0 24px;
}
.faq-item.open .faq-body {
  max-height: 400px;
  opacity: 1;
  padding: 0 24px 24px;
}

/* ==========================================================================
   CONTACT SECTION & FORM
   ========================================================================== */

.contact-hero {
  background: var(--graphite-900);
  color: var(--text-white);
  padding: clamp(60px, 8vw, 96px) 0;
  min-height: calc(100vh - var(--nav-h));
  position: relative;
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(32px, 6vw, 64px);
  margin-top: 36px;
}

.contact-form {
  background: var(--graphite-card);
  border: 1px solid var(--graphite-border);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 36px);
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-group label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--battery-cyan);
}
.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--graphite-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--battery-green);
  background: rgba(20, 217, 125, 0.04);
}
.form-group select option {
  background: var(--graphite-900);
  color: var(--text-white);
}
.form-group textarea {
  min-height: 110px;
  resize: vertical;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.contact-info h3 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 4px;
}
.contact-info .sub {
  font-size: 0.95rem;
  color: var(--text-white-dim);
  line-height: 1.7;
  margin-bottom: 12px;
}

.c-detail {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--graphite-border-subtle);
  border-radius: var(--radius-md);
}
.c-detail .ic {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(20, 217, 125, 0.12);
  border: 1px solid rgba(20, 217, 125, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--battery-green);
  font-size: 14px;
  flex-shrink: 0;
}
.c-detail strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-white-muted);
}
.c-detail span {
  font-size: 0.92rem;
  color: var(--text-white);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

footer {
  background: var(--graphite-950);
  color: var(--text-white);
  border-top: 1px solid var(--graphite-border);
  padding: clamp(60px, 8vw, 84px) 0 32px;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: clamp(32px, 5vw, 64px);
  margin-bottom: 48px;
}

.f-brand p {
  font-size: 0.88rem;
  color: var(--text-white-muted);
  line-height: 1.7;
  margin-top: 16px;
  max-width: 38ch;
}

.f-col-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--battery-cyan);
  margin-bottom: 20px;
  font-weight: 600;
}

.f-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.f-col a {
  font-size: 0.85rem;
  color: var(--text-white-dim);
  cursor: pointer;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}
.f-col a:hover {
  color: var(--battery-green);
  padding-left: 4px;
}

.footer-bar {
  padding-top: 28px;
  border-top: 1px solid var(--graphite-border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.78rem;
  color: var(--text-white-muted);
}
.footer-bar span {
  color: var(--battery-green);
  font-weight: 600;
}
.footer-links {
  display: flex;
  align-items: center;
  gap: 20px;
}
.footer-links a {
  color: var(--text-white-dim);
  cursor: pointer;
  transition: color var(--transition-fast);
}
.footer-links a:hover {
  color: var(--battery-green);
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (1400px, 1050px, 900px, 640px, 480px, 390px)
   ========================================================================== */

@media (min-width: 1400px) {
  :root {
    --max-w: 1280px;
  }
}

@media (max-width: 1050px) {
  .nav-links, .btn-demo-nav {
    display: none;
  }
  .hamburger {
    display: flex;
  }
}

@media (max-width: 900px) {
  .tw {
    grid-template-columns: 1fr !important;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual-wrapper {
    order: 2;
    justify-content: center;
    width: 100%;
  }
  .battery-pack-assembly {
    max-width: 440px;
    margin: 0 auto;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .why-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .charts-grid {
    grid-template-columns: 1fr 1fr;
  }
  .process-step {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .process-step .step-img {
    order: 2 !important;
    height: 260px;
  }
  .process-step > div:not(.step-img) {
    order: 1 !important;
  }
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    gap: 20px;
  }
  .price-card.featured {
    grid-column: span 2;
    order: -1;
  }
  .contact-wrap {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 640px) {
  .navbar {
    padding: 0 16px;
  }
  .hero {
    padding: 36px 0 48px;
  }
  .hero-btns {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .hero-btns .btn-p,
  .hero-btns .btn-s {
    width: 100%;
    justify-content: center;
    padding: 14px 20px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .plat-grid {
    grid-template-columns: 1fr;
  }
  .why-grid {
    grid-template-columns: 1fr;
  }
  .charts-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 100%;
  }
  .price-card.featured {
    grid-column: span 1;
    order: 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .section-h2 {
    font-size: clamp(1.6rem, 6.8vw, 2.1rem);
    max-width: none;
  }
  .hero h1 {
    font-size: clamp(2rem, 8vw, 2.75rem);
  }
}

@media (max-width: 480px) {
  :root {
    --nav-h: 62px;
  }
  .dash-card {
    padding: 16px;
  }
  .score-big {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 14px;
  }
  .sb-num {
    font-size: 1.8rem;
  }
  .battery-cells-svg {
    width: 260px;
    height: 200px;
    right: -10px;
    top: -20px;
    opacity: 0.6;
  }
  .hero-circuits {
    display: none;
  }
}

@media (max-width: 390px) {
  .hero-badge {
    font-size: 0.62rem;
    padding: 5px 12px;
  }
  .score-val {
    font-size: 0.78rem;
  }
  .score-lbl {
    font-size: 0.78rem;
  }
  .dash-title {
    font-size: 1.1rem;
  }
}