:root {
  --bg: #050505;
  --panel: #101010;
  --panel-soft: #171717;
  --text: #ffffff;
  --muted: #b8b8b8;
  --green: #9bd400;
  --red: #e32020;
  --line: rgba(255,255,255,0.14);
  --shadow-green: 0 0 0 1px rgba(155,212,0,0.18), 0 20px 60px rgba(155,212,0,0.08);
  --shadow-red: 0 0 0 1px rgba(227,32,32,0.18), 0 20px 60px rgba(227,32,32,0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top, rgba(155, 212, 0, 0.12), transparent 28%),
    radial-gradient(circle at 80% 20%, rgba(227, 32, 32, 0.09), transparent 24%),
    linear-gradient(180deg, #070707 0%, #050505 100%);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

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

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

.page-shell {
  min-height: 100vh;
}

.section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 88px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(1240px, calc(100% - 24px));
  margin: 16px auto 0;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(10, 10, 10, 0.84);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand strong,
.site-header strong,
.section h1,
.section h2,
.section h3 {
  letter-spacing: -0.03em;
}

.brand span {
  display: block;
  color: var(--muted);
  font-size: 0.86rem;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(155,212,0,0.22), rgba(155,212,0,0.04));
  border: 1px solid rgba(155,212,0,0.35);
  box-shadow: var(--shadow-green);
  font-weight: 800;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.96rem;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.nav-toggle {
  display: none;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-solid {
  background: linear-gradient(135deg, #b9f315, var(--green));
  color: #0b0b0b;
  box-shadow: var(--shadow-green);
}

.button-ghost {
  border-color: var(--line);
  background: rgba(255,255,255,0.02);
}

.hero {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 32px;
  align-items: center;
  padding-top: 54px;
}

.hero h1,
.section h2 {
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  line-height: 0.93;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3.6rem);
}

.hero-text,
.section-heading p,
.waitlist-copy p,
.faq-list p,
.product-copy p,
.concept-card p,
.battery-card p,
.step-card p,
.gallery-card p,
.site-footer p,
.form-note,
.waitlist-message {
  color: var(--muted);
  line-height: 1.65;
  font-size: 1rem;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--green);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.panel {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.02));
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 24px;
}

.glow-green {
  box-shadow: var(--shadow-green);
}

.glow-red {
  box-shadow: var(--shadow-red);
}

.hero-visual {
  position: relative;
  overflow: hidden;
  min-height: 560px;
}

.visual-badge {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(16, 16, 16, 0.9);
  border: 1px solid rgba(155,212,0,0.28);
  color: var(--green);
  font-size: 0.82rem;
  font-weight: 700;
}

.image-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(0,0,0,0.2));
}

.hero-frame {
  margin-top: 18px;
  min-height: 480px;
}

.hero-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.placeholder {
  display: grid;
  place-items: center;
  min-height: 260px;
  padding: 20px;
  text-align: center;
  color: var(--muted);
  background:
    linear-gradient(135deg, rgba(155,212,0,0.14), rgba(227,32,32,0.05)),
    var(--panel-soft);
  font-weight: 700;
}

.benefit-grid,
.concept-grid,
.product-grid,
.battery-grid,
.platform-showcase-grid,
.steps-grid,
.gallery-grid {
  display: grid;
  gap: 18px;
}

.benefit-grid {
  margin-top: 30px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.benefit-card,
.concept-card,
.product-card,
.battery-card,
.step-card,
.gallery-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
}

.benefit-card {
  padding: 18px;
}

.benefit-card strong,
.concept-card h3,
.product-card h3,
.battery-card h3,
.step-card h3,
.gallery-card h3 {
  display: block;
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.section-heading {
  max-width: 800px;
  margin-bottom: 28px;
}

.concept-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.concept-card,
.step-card,
.battery-card {
  padding: 24px;
}

.concept-number,
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border-radius: 14px;
  border: 1px solid rgba(155,212,0,0.26);
  background: rgba(155,212,0,0.1);
  color: var(--green);
  font-weight: 800;
}

.product-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-card {
  overflow: hidden;
}

.product-media {
  min-height: 250px;
  border-bottom: 1px solid var(--line);
}

.product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-copy {
  padding: 24px;
}

.product-tag-row,
.gallery-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.tag-green {
  border-color: rgba(155,212,0,0.32);
  color: var(--green);
}

.tag-red {
  border-color: rgba(227,32,32,0.32);
  color: var(--red);
}

.highlights {
  display: grid;
  gap: 10px;
  margin: 18px 0 24px;
  padding: 0;
  list-style: none;
}

.highlights li::before,
.waitlist-points li::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 10px;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 16px rgba(155,212,0,0.48);
}

.waitlist-points {
  display: grid;
  gap: 10px;
  padding: 0;
  list-style: none;
}

.product-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.product-actions .button,
.cta-panel .button,
.waitlist-form .button {
  min-width: 170px;
}

.battery-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.platform-showcase-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.battery-card {
  position: relative;
  overflow: hidden;
}

.battery-card::after {
  content: "";
  position: absolute;
  inset: auto -20% -40% auto;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
}

.battery-card[data-accent="red"] {
  box-shadow: inset 0 0 0 1px rgba(227,32,32,0.16);
}

.battery-card[data-accent="green"] {
  box-shadow: inset 0 0 0 1px rgba(155,212,0,0.16);
}

.battery-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.disclaimer {
  max-width: 900px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.92rem;
}

.platform-card {
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
}

.platform-media {
  min-height: 280px;
  border-bottom: 1px solid var(--line);
}

.platform-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.platform-media-placeholder {
  display: grid;
  place-items: center;
  padding: 28px;
  background:
    radial-gradient(circle at top left, rgba(155,212,0,0.12), transparent 42%),
    linear-gradient(180deg, rgba(255,255,255,0.03), rgba(0,0,0,0.18));
}

.platform-placeholder-copy {
  max-width: 420px;
}

.platform-placeholder-copy h3,
.platform-copy h3 {
  margin: 14px 0 10px;
}

.platform-copy {
  display: grid;
  gap: 18px;
  padding: 24px;
}

.steps-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.waitlist-section {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 24px;
  align-items: start;
}

.field-label {
  display: block;
  margin-bottom: 12px;
  font-weight: 700;
}

.field-row {
  display: flex;
  gap: 12px;
}

.field-row input {
  width: 100%;
  min-height: 54px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #0c0c0c;
  color: var(--text);
  font-size: 1rem;
}

.waitlist-message {
  min-height: 24px;
  margin: 14px 0 0;
}

.waitlist-message.is-success {
  color: var(--green);
}

.gallery-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.gallery-card {
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.gallery-card:hover,
.gallery-card:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(155,212,0,0.34);
}

.gallery-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.gallery-copy {
  padding: 18px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 22px 24px;
  font-weight: 700;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item p {
  margin: 0;
  padding: 0 24px 24px;
}

.cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cta-panel h2 {
  margin-bottom: 8px;
  font-size: clamp(2rem, 4vw, 3.3rem);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0 40px;
  border-top: 1px solid var(--line);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  color: var(--muted);
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(0,0,0,0.88);
}

.lightbox[hidden] {
  display: none;
}

.lightbox-figure {
  margin: 0;
  width: min(1200px, 100%);
}

.lightbox-figure img {
  width: 100%;
  max-height: 82vh;
  object-fit: contain;
  border-radius: 24px;
  border: 1px solid var(--line);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(16,16,16,0.94);
  color: var(--text);
  cursor: pointer;
}

.lightbox-figure figcaption {
  padding-top: 14px;
  color: var(--muted);
}

@media (max-width: 1100px) {
  .hero,
  .waitlist-section,
  .product-grid,
  .battery-grid,
  .platform-showcase-grid,
  .steps-grid,
  .gallery-grid,
  .concept-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    align-items: start;
  }

  .hero-visual {
    min-height: unset;
  }
}

@media (max-width: 840px) {
  .site-header {
    align-items: flex-start;
    border-radius: 28px;
  }

  .nav-toggle {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    padding: 0 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: transparent;
    color: var(--text);
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: rgba(10,10,10,0.97);
  }

  .site-nav.is-open {
    display: flex;
  }

  .hero,
  .waitlist-section,
  .product-grid,
  .battery-grid,
  .platform-showcase-grid,
  .steps-grid,
  .gallery-grid,
  .concept-grid,
  .cta-panel,
  .site-footer {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding-top: 34px;
  }

  .benefit-grid {
    grid-template-columns: 1fr;
  }

  .field-row {
    flex-direction: column;
  }

  .product-actions .button,
  .cta-panel .button,
  .waitlist-form .button {
    width: 100%;
  }
}

@media (max-width: 560px) {
  .section {
    width: min(100% - 20px, 1180px);
    padding: 68px 0;
  }

  .site-header {
    width: calc(100% - 16px);
    margin-top: 8px;
    padding: 12px 14px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
  }

  .panel,
  .concept-card,
  .step-card,
  .battery-card,
  .product-copy {
    padding: 18px;
  }

  .hero-frame {
    min-height: 320px;
  }
}