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

:root {
  --green:     #39FF14;
  --green-mid: #20C020;
  --green-dim: #0A4A0A;
  --bg:        #000000;
  --text:      #20C020;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Courier New', Courier, monospace;
  font-size: 14px;
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--green); text-decoration: none; }

/* ── Scanline overlay ──────────────────────────────────────────────────────── */
.scanline {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0,0,0,0.08) 3px,
    rgba(0,0,0,0.08) 4px
  );
}

/* ── Section base ──────────────────────────────────────────────────────────── */
section {
  max-width: 900px;
  margin: 0 auto;
  padding: 80px 24px;
}

.section-heading {
  font-size: 13px;
  letter-spacing: 6px;
  color: var(--green);
  margin-bottom: 40px;
  position: relative;
  display: inline-block;
}
.section-heading::after {
  content: '';
  display: block;
  margin-top: 8px;
  width: 100%;
  height: 1px;
  background: var(--green-dim);
}

/* ── Hero ──────────────────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  border-bottom: 1px solid var(--green-dim);
  position: relative;
  max-width: 100%;
  padding: 40px 24px;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.hero-logo {
  width: 180px;
  height: 180px;
  object-fit: contain;
  opacity: 0.92;
  animation: pulse 3s ease-in-out infinite alternate;
}

@keyframes pulse {
  from { opacity: 0.75; }
  to   { opacity: 1.00; }
}

.hero-title {
  font-size: clamp(36px, 8vw, 72px);
  letter-spacing: 14px;
  color: var(--green);
  font-weight: normal;
  text-shadow: 0 0 30px rgba(57, 255, 20, 0.4);
}

.hero-sub {
  font-size: 12px;
  letter-spacing: 6px;
  color: var(--green-mid);
  margin-top: -8px;
}

.btn-download {
  display: inline-block;
  margin-top: 8px;
  padding: 14px 36px;
  border: 1px solid var(--green);
  color: var(--green);
  font-family: inherit;
  font-size: 14px;
  letter-spacing: 4px;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}
.btn-download:hover {
  background: rgba(57, 255, 20, 0.1);
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.25);
}

.hero-note {
  font-size: 11px;
  color: var(--green-dim);
  letter-spacing: 2px;
}

/* ── Features ──────────────────────────────────────────────────────────────── */
.features {
  border-bottom: 1px solid var(--green-dim);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
}

.feature-card {
  border: 1px solid var(--green-dim);
  padding: 24px;
  transition: border-color 0.2s, background 0.2s;
}
.feature-card:hover {
  border-color: var(--green);
  background: rgba(57, 255, 20, 0.03);
}

.feature-icon {
  font-size: 22px;
  color: var(--green);
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--green);
  margin-bottom: 10px;
  font-weight: normal;
}

.feature-card p {
  font-size: 13px;
  color: var(--green-mid);
  line-height: 1.8;
}

/* ── Field Readings ────────────────────────────────────────────────────────── */
.readings {
  border-bottom: 1px solid var(--green-dim);
  text-align: center;
}

.readings-body {
  color: var(--green-mid);
  max-width: 600px;
  margin: 0 auto 40px;
  font-size: 13px;
}

.reading-cells {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.reading-cell {
  border: 1px solid var(--green-dim);
  padding: 20px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 120px;
}

.cell-value {
  font-size: 22px;
  color: var(--green);
  letter-spacing: 2px;
}

.cell-label {
  font-size: 9px;
  color: var(--green-dim);
  letter-spacing: 2px;
}

/* ── About ─────────────────────────────────────────────────────────────────── */
.about {
  border-bottom: 1px solid var(--green-dim);
}

.about p {
  color: var(--green-mid);
  font-size: 13px;
  max-width: 680px;
  margin-bottom: 20px;
}

.disclaimer {
  font-size: 10px !important;
  color: var(--green-dim) !important;
  letter-spacing: 1px;
  margin-top: 32px !important;
}

/* ── Download section ──────────────────────────────────────────────────────── */
.download-section {
  text-align: center;
  border-bottom: 1px solid var(--green-dim);
}

.download-section p {
  color: var(--green-mid);
  font-size: 13px;
  margin-bottom: 24px;
}

.install-note {
  margin-top: 20px !important;
  font-size: 11px !important;
  color: var(--green-dim) !important;
  line-height: 1.9 !important;
}

.install-note strong {
  color: var(--green-mid);
}

/* ── Footer ────────────────────────────────────────────────────────────────── */
footer {
  text-align: center;
  padding: 48px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-logo {
  font-size: 22px;
  letter-spacing: 10px;
  color: var(--green);
}

.footer-url {
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--green-mid);
}

.footer-copy {
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--green-dim);
}

/* ── Mobile ────────────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .hero-title   { letter-spacing: 8px; }
  .feature-grid { grid-template-columns: 1fr; }
  .reading-cells { gap: 12px; }
  .reading-cell { min-width: 100px; padding: 16px 20px; }
}