*,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    :root {
      --bg-dark: #080B14;
      --bg-mid: #101827;
      --bg-light: #152845;
      --neon: #2DEBFF;
      --neon2: #5CFFE5;
      --text-primary: #F3FBFF;
      --text-secondary: #B8CBD6;
      --text-muted: #7E8A96;
      --card-border: rgba(163, 221, 247, 0.55);
      --card-bg: linear-gradient(135deg, #48697D, #334D62, #23384A);
      --green: #12D96B;
      --yellow: #FFD54A;
      --orange: #FF8B3D;
      --red: #FF5E78;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      background: radial-gradient(ellipse 120% 60% at 50% 0%, var(--bg-light) 0%, var(--bg-mid) 45%, var(--bg-dark) 100%);
      min-height: 100vh;
      color: var(--text-primary);
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
      overflow-x: hidden;
    }

    /* Laser lines background */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: 0;
      background:
        linear-gradient(135deg, transparent 35%, rgba(0, 229, 255, 0.07) 50%, transparent 65%),
        linear-gradient(225deg, transparent 35%, rgba(0, 229, 255, 0.04) 50%, transparent 65%);
    }

    /* SVG laser overlay */
    .laser-svg {
      position: fixed;
      inset: 0;
      width: 100%;
      height: 100%;
      pointer-events: none;
      z-index: 0;
      opacity: 0.45;
    }

    /* Layout helpers */
    .container {
      max-width: 900px;
      margin: 0 auto;
      padding: 0 20px;
      position: relative;
      z-index: 1;
    }

    section {
      padding: 80px 0;
    }

    /* NAVBAR */
    nav {
      position: sticky;
      top: 0;
      z-index: 100;
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      background: rgba(8, 11, 20, 0.75);
      border-bottom: 1px solid rgba(45, 235, 255, 0.12);
    }

    .nav-inner {
      max-width: 900px;
      margin: 0 auto;
      padding: 14px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .nav-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
    }

        .nav-logo-icon {
      width: 40px;
      height: 40px;
      filter: drop-shadow(0 0 12px rgba(45, 235, 255, 0.28));
    }

    .nav-logo-text {
      font-size: 20px;
      font-weight: 600;
      color: var(--text-primary);
      letter-spacing: 0.3px;
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      color: var(--bg-dark);
      background: linear-gradient(135deg, var(--neon), var(--neon2));
      border: none;
      border-radius: 14px;
      padding: 11px 24px;
      cursor: pointer;
      text-decoration: none;
      letter-spacing: 0.2px;
      box-shadow: 0 0 24px rgba(45, 235, 255, 0.28);
      transition: transform .15s, box-shadow .2s, opacity .2s;
    }

    .nav-cta:hover {
      opacity: .96;
      transform: translateY(-1px);
      box-shadow: 0 0 34px rgba(45, 235, 255, 0.48);
    }

    /* HERO */
    .hero {
      padding: 72px 0 60px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      gap: 0;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      font-size: 13px;
      font-weight: 600;
      color: var(--neon);
      background: rgba(45, 235, 255, 0.1);
      border: 1px solid rgba(45, 235, 255, 0.3);
      border-radius: 100px;
      padding: 6px 16px;
      letter-spacing: 0.5px;
      margin-bottom: 28px;
    }

    .hero-badge::before {
      content: '';
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--neon);
      box-shadow: 0 0 8px var(--neon);
      animation: pulse-dot 2s infinite;
    }

    @keyframes pulse-dot {

      0%,
      100% {
        opacity: 1;
        transform: scale(1);
      }

      50% {
        opacity: 0.5;
        transform: scale(0.8);
      }
    }

    .hero h1 {
      font-size: clamp(36px, 7vw, 60px);
      font-weight: 700;
      line-height: 1.12;
      letter-spacing: -1px;
      margin-bottom: 18px;
    }

    .hero h1 span {
      color: var(--neon);
    }

    .hero p {
      font-size: 18px;
      color: var(--text-secondary);
      max-width: 540px;
      line-height: 1.65;
      margin-bottom: 40px;
    }

    .hero-actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      justify-content: center;
      margin-bottom: 64px;
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      font-size: 16px;
      font-weight: 700;
      color: var(--bg-dark);
      background: linear-gradient(135deg, var(--neon), var(--neon2));
      border: none;
      border-radius: 14px;
      padding: 15px 30px;
      cursor: pointer;
      text-decoration: none;
      box-shadow: 0 0 28px rgba(45, 235, 255, 0.35);
      transition: transform .15s, box-shadow .2s;
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 40px rgba(45, 235, 255, 0.55);
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-primary);
      background: transparent;
      border: 1px solid rgba(163, 221, 247, 0.4);
      border-radius: 14px;
      padding: 15px 26px;
      cursor: pointer;
      text-decoration: none;
      backdrop-filter: blur(8px);
      transition: border-color .2s, background .2s;
    }

    .btn-secondary:hover {
      border-color: var(--neon);
      background: rgba(45, 235, 255, 0.06);
    }

    /* BATTERY RING */
    .battery-demo {
      position: relative;
      width: 300px;
      height: 300px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .battery-glow {
      position: absolute;
      inset: 10px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(45, 235, 255, 0.18) 0%, rgba(45, 235, 255, 0.06) 45%, transparent 70%);
      animation: glow-pulse 3s ease-in-out infinite;
    }

    @keyframes glow-pulse {

      0%,
      100% {
        opacity: 1;
        transform: scale(1);
      }

      50% {
        opacity: 0.65;
        transform: scale(0.96);
      }
    }

    .ring-svg {
      width: 100%;
      height: 100%;
      animation: ring-breathe 3s ease-in-out infinite;
    }

    @keyframes ring-breathe {

      0%,
      100% {
        transform: scale(1);
      }

      50% {
        transform: scale(1.02);
      }
    }

    .ring-track {
      fill: none;
      stroke: rgba(255, 255, 255, 0.08);
      stroke-width: 20;
      stroke-linecap: round;
    }

    .ring-progress {
      fill: none;
      stroke-width: 20;
      stroke-linecap: round;
      stroke: url(#ringGradient);
      transform-origin: center;
      transform: rotate(-90deg);
      transition: stroke-dashoffset 1.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .ring-glow {
      fill: none;
      stroke-width: 30;
      stroke-linecap: round;
      stroke: url(#ringGradient);
      transform-origin: center;
      transform: rotate(-90deg);
      filter: blur(8px);
      opacity: 0.45;
      transition: stroke-dashoffset 1.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .battery-center {
      position: absolute;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 6px;
    }

    .battery-icon {
      width: 56px;
      height: 56px;
      color: #52E082;
      opacity: 0.98;
      filter: drop-shadow(0 0 18px rgba(82, 224, 130, 0.28));
      transition: color 280ms ease, filter 280ms ease, transform 280ms ease;
    }

    .battery-pct {
      font-size: 52px;
      font-weight: 700;
      line-height: 1;
      color: var(--neon);
      letter-spacing: -2px;
      text-shadow: 0 0 30px rgba(45, 235, 255, 0.6);
    }

    /* FEATURES */
    .features-title {
      text-align: center;
      margin-bottom: 48px;
    }

    .features-title h2 {
      font-size: clamp(26px, 5vw, 38px);
      font-weight: 700;
      letter-spacing: -0.5px;
      margin-bottom: 12px;
    }

    .features-title p {
      color: var(--text-secondary);
      font-size: 16px;
    }

    .features-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    @media (max-width: 580px) {
      .features-grid {
        grid-template-columns: 1fr;
      }
    }

    .feature-card {
      background: linear-gradient(135deg, rgba(72, 105, 125, 0.55), rgba(51, 77, 98, 0.55), rgba(35, 56, 74, 0.55));
      border: 1px solid var(--card-border);
      border-radius: 24px;
      padding: 28px 26px;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      position: relative;
      overflow: hidden;
      transition: transform .2s, box-shadow .2s;
    }

    .feature-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 8px 32px rgba(45, 235, 255, 0.1);
    }

    .feature-card::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(199, 238, 212, 0.05), rgba(255, 255, 255, 0.04));
      border-radius: inherit;
      pointer-events: none;
    }

    .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      background: rgba(45, 235, 255, 0.12);
      border: 1px solid rgba(45, 235, 255, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
    }

    .feature-icon svg {
      width: 24px;
      height: 24px;
    }

    .feature-card h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-primary);
    }

    .feature-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* BATTERY PALETTE DEMO */
    .palette-section {
      padding: 40px 0 80px;
    }

    .palette-section h2 {
      text-align: center;
      font-size: clamp(24px, 4vw, 32px);
      font-weight: 700;
      margin-bottom: 10px;
    }

    .palette-section .subtitle {
      text-align: center;
      color: var(--text-secondary);
      margin-bottom: 44px;
    }

    .palette-bars {
      display: flex;
      gap: 10px;
      align-items: flex-end;
      justify-content: center;
      flex-wrap: wrap;
    }

    .palette-bar {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 10px;
    }

    .palette-bar-fill {
      width: 56px;
      border-radius: 10px 10px 6px 6px;
      position: relative;
      overflow: hidden;
    }

    .palette-bar-fill::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 35%;
      background: linear-gradient(to bottom, rgba(255, 255, 255, 0.18), transparent);
      border-radius: inherit;
    }

    .palette-bar-label {
      font-size: 13px;
      font-weight: 600;
    }

    .palette-bar-pct {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* HOW IT WORKS */
    .steps-section {
      padding: 40px 0 80px;
    }

    .steps-title {
      text-align: center;
      margin-bottom: 48px;
    }

    .steps-title h2 {
      font-size: clamp(24px, 4vw, 34px);
      font-weight: 700;
      margin-bottom: 10px;
    }

    .steps-title p {
      color: var(--text-secondary);
    }

    .steps {
      display: flex;
      flex-direction: column;
      gap: 0;
      position: relative;
      max-width: 580px;
      margin: 0 auto;
    }

    .steps::before {
      content: '';
      position: absolute;
      left: 23px;
      top: 48px;
      bottom: 48px;
      width: 2px;
      background: linear-gradient(to bottom, var(--neon), rgba(45, 235, 255, 0.15));
    }

    .step {
      display: flex;
      gap: 22px;
      align-items: flex-start;
      padding: 20px 0;
    }

    .step-num {
      flex-shrink: 0;
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon), var(--neon2));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 700;
      color: var(--bg-dark);
      box-shadow: 0 0 20px rgba(45, 235, 255, 0.4);
      position: relative;
      z-index: 1;
    }

    .step-body h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .step-body p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* CTA BAND */
    .cta-band {
      margin: 0 0 80px;
      border-radius: 28px;
      background: linear-gradient(135deg, rgba(45, 235, 255, 0.12), rgba(92, 255, 229, 0.06));
      border: 1px solid rgba(45, 235, 255, 0.3);
      padding: 56px 32px;
      text-align: center;
      backdrop-filter: blur(12px);
      position: relative;
      overflow: hidden;
    }

    .cta-band::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(45, 235, 255, 0.08) 0%, transparent 70%);
      pointer-events: none;
    }

    .cta-band h2 {
      font-size: clamp(24px, 5vw, 36px);
      font-weight: 700;
      margin-bottom: 14px;
    }

    .cta-band p {
      color: var(--text-secondary);
      font-size: 16px;
      margin-bottom: 32px;
    }

    /* FUTURE IMPROVEMENTS + FOOTER */
    .future-panel {
      margin: 0 0 24px;
      border-radius: 24px;
      background: linear-gradient(135deg, rgba(72, 105, 125, 0.4), rgba(35, 56, 74, 0.4));
      border: 1px solid rgba(45, 235, 255, 0.18);
      padding: 28px;
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 24px;
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
    }

    .future-kicker {
      display: inline-block;
      margin-bottom: 12px;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.18em;
      color: var(--neon);
    }

    .future-copy h3 {
      font-size: 24px;
      margin-bottom: 10px;
    }

    .future-copy p {
      color: var(--text-secondary);
      font-size: 15px;
      line-height: 1.7;
    }

    .future-grid {
      display: grid;
      gap: 12px;
    }

    .future-item {
      border: 1px solid rgba(45, 235, 255, 0.14);
      background: rgba(8, 11, 20, 0.22);
      border-radius: 16px;
      padding: 14px 16px;
      color: var(--text-secondary);
      line-height: 1.55;
    }

    .footer-shell {
      border-top: 1px solid rgba(163, 221, 247, 0.1);
      padding: 28px 0 44px;
    }

    .footer-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      flex-wrap: wrap;
    }

    .footer-brand {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-brand strong {
      font-size: 18px;
      color: var(--text-primary);
    }

    .footer-copy {
      color: var(--text-muted);
      font-size: 14px;
    }

    .footer-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 18px;
      flex-wrap: wrap;
    }

    .footer-links a {
      color: var(--text-secondary);
      text-decoration: none;
      font-weight: 600;
      font-size: 14px;
      transition: color .2s ease, opacity .2s ease;
    }

    .footer-links a:hover {
      color: var(--neon);
      opacity: 1;
    }

    @media (max-width: 720px) {
      .future-panel {
        grid-template-columns: 1fr;
      }

      .footer-inner {
        flex-direction: column;
        align-items: flex-start;
      }

      .footer-links {
        justify-content: flex-start;
      }
    }

    /* Divider */
    .divider {
      width: 100%;
      height: 1px;
      background: linear-gradient(to right, transparent, rgba(45, 235, 255, 0.2), transparent);
      margin: 0;
    }
/* FINAL OVERRIDES */
.nav-logo-icon {
  width: 40px;
  height: 40px;
  filter: drop-shadow(0 0 12px rgba(45, 235, 255, 0.28));
}

.nav-logo-text {
  font-size: 20px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--bg-dark);
  background: linear-gradient(135deg, var(--neon), var(--neon2));
  border: none;
  border-radius: 14px;
  padding: 11px 24px;
  box-shadow: 0 0 24px rgba(45, 235, 255, 0.28);
  transition: transform .15s, box-shadow .2s, opacity .2s;
}

.nav-cta:hover {
  opacity: .96;
  transform: translateY(-1px);
  box-shadow: 0 0 34px rgba(45, 235, 255, 0.48);
}

.store-button {
  justify-content: center;
  gap: 10px;
  min-width: 0;
}

.store-button--large {
  justify-content: center;
}

.store-icon {
  width: 18px;
  height: 18px;
  display: block;
  flex-shrink: 0;
}

.store-wordmark {
  font-size: 0.98em;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.future-panel {
  display: block;
}

.future-copy p {
  max-width: 760px;
}

.future-grid--grouped {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: start;
  margin-top: 24px;
}

.future-group {
  display: grid;
  gap: 12px;
  align-content: start;
}

.future-group h4 {
  margin: 0 0 2px;
  font-size: 16px;
  color: var(--text-primary);
}

.future-item {
  min-width: 0;
}

.store-footer-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.store-footer-icon {
  width: 16px;
  height: 16px;
  display: block;
  flex-shrink: 0;
}

.store-footer-text {
  font-size: 14px;
  font-weight: 600;
}

.store-footer-link:hover .store-footer-text {
  color: var(--neon);
}

@media (max-width: 980px) {
  .future-grid--grouped {
    grid-template-columns: 1fr;
  }
}
/* PALETTE HOVER MOTION */
.palette-bar {
  cursor: default;
}

.palette-bar-fill,
.palette-bar-label,
.palette-bar-pct {
  transition: transform .18s ease, filter .18s ease, opacity .18s ease;
  will-change: transform;
}

.palette-bar:hover .palette-bar-fill {
  transform: translateY(-8px);
  filter: brightness(1.06) saturate(1.06);
}

.palette-bar:hover .palette-bar-label {
  transform: translateY(-4px);
}

.palette-bar:hover .palette-bar-pct {
  transform: translateY(-2px);
  opacity: 1;
}

/* PALETTE SOUND UI */
.palette-header {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.palette-header > div {
  text-align: center;
}

.palette-header .subtitle {
  margin-bottom: 0;
}

.sound-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(45, 235, 255, 0.24);
  background: rgba(45, 235, 255, 0.08);
  color: var(--text-primary);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform .15s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease;
}

.sound-toggle:hover {
  transform: translateY(-1px);
  border-color: rgba(45, 235, 255, 0.4);
  box-shadow: 0 0 18px rgba(45, 235, 255, 0.14);
}

.sound-toggle[aria-pressed="true"] {
  background: rgba(45, 235, 255, 0.14);
  border-color: rgba(45, 235, 255, 0.48);
  box-shadow: 0 0 18px rgba(45, 235, 255, 0.18);
}

.sound-toggle-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: rgba(45, 235, 255, 0.12);
  color: var(--neon);
  font-size: 10px;
  font-weight: 800;
}

@media (max-width: 640px) {
  .palette-header {
    flex-direction: column;
    align-items: center;
  }

  .sound-toggle {
    margin-top: 0;
  }
}

/* PALETTE SOUND REFINEMENT */
.palette-controls {
  display: flex;
  justify-content: flex-start;
  width: fit-content;
  margin: 8px auto 18px;
  transform: translateX(-250px);
}

.sound-toggle {
  width: 44px;
  height: 44px;
  padding: 0;
  margin-top: 0;
  justify-content: center;
  border-radius: 999px;
  background: rgba(45, 235, 255, 0.08);
}

.sound-toggle-icon {
  display: none;
}

.sound-icon-on,
.sound-icon-off {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  color: var(--neon);
}

.sound-icon-on svg,
.sound-icon-off svg {
  width: 18px;
  height: 18px;
}

.sound-toggle[aria-pressed="true"] .sound-icon-off {
  display: none;
}

.sound-toggle[aria-pressed="false"] .sound-icon-on {
  display: none;
}

@media (max-width: 900px) {
  .palette-controls {
    transform: translateX(-170px);
  }
}

@media (max-width: 640px) {
  .palette-controls {
    transform: none;
    width: 100%;
    justify-content: center;
  }
}

/* PALETTE TOGGLE POSITION + TOOLTIP */
.palette-controls {
  margin: 2px auto 18px;
  transform: translateX(-165px);
}

.sound-toggle {
  position: relative;
}

.sound-toggle::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  transform: translateX(-50%) translateY(4px);
  padding: 7px 10px;
  border-radius: 10px;
  background: rgba(8, 11, 20, 0.92);
  border: 1px solid rgba(45, 235, 255, 0.2);
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity .16s ease, transform .16s ease;
  box-shadow: 0 0 18px rgba(45, 235, 255, 0.12);
}

.sound-toggle:hover::after,
.sound-toggle:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 900px) {
  .palette-controls {
    transform: translateX(-120px);
  }
}

@media (max-width: 640px) {
  .sound-toggle::after {
    display: none;
  }
}