:root {
  --bg-primary: #0a0a0c;
  --bg-secondary: #111114;
  --bg-card: #18181c;
  --text-primary: #f5f0eb;
  --text-secondary: #a09890;
  --text-muted: #6b6560;
  --accent: #e8913a;
  --accent-glow: #f0a050;
  --accent-soft: rgba(232, 145, 58, 0.12);
  --red-light: #c0392b;
  --near-ir: #e74c3c;
  --mid-ir: #e67e22;
  --far-ir: #d35400;
  --good: #4ecdc4;
  --bad: #6b6560;
  --radius: 12px;
  --container: 1100px;
}

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

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.section-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ═══════ HERO ═══════ */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(232, 145, 58, 0.15) 0%, rgba(192, 57, 43, 0.08) 40%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: pulse-glow 6s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.15); }
}

.hero-content { position: relative; z-index: 1; max-width: 800px; }

.hero-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 32px;
}

.hero h1 {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(2.8rem, 7vw, 5rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-glow) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-lede {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 48px;
  line-height: 1.8;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.stat { text-align: center; }

.stat-number {
  display: block;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--accent);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.08);
}

/* ═══════ BENEFITS ═══════ */
.benefits {
  padding: 120px 0;
  background: var(--bg-secondary);
}

.section-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3rem);
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 64px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.benefit-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: border-color 0.3s, transform 0.3s;
}

.benefit-card:hover {
  border-color: rgba(232, 145, 58, 0.2);
  transform: translateY(-4px);
}

.benefit-icon {
  font-size: 1.6rem;
  margin-bottom: 16px;
  display: inline-block;
}

.benefit-card h3 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}

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

/* ═══════ SCIENCE ═══════ */
.science {
  padding: 120px 0;
}

.science-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.science-text h2 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.science-text > p {
  color: var(--text-secondary);
  margin-bottom: 36px;
  font-size: 1.02rem;
}

.spectrum-list { display: flex; flex-direction: column; gap: 24px; }

.spectrum-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.spectrum-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 6px;
}

.spectrum-dot.near { background: var(--near-ir); box-shadow: 0 0 12px var(--near-ir); }
.spectrum-dot.mid { background: var(--mid-ir); box-shadow: 0 0 12px var(--mid-ir); }
.spectrum-dot.far { background: var(--far-ir); box-shadow: 0 0 12px var(--far-ir); }

.spectrum-item strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.spectrum-item p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.science-comparison h3 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.compare-table th {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 2px solid rgba(255,255,255,0.08);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.compare-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.compare-table td.good { color: var(--good); font-weight: 500; }
.compare-table td.bad { color: var(--bad); }

/* ═══════ PRODUCT ═══════ */
.product {
  padding: 120px 0;
  background: var(--bg-secondary);
}

.product-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 20px;
}

.pf-item {
  display: flex;
  gap: 20px;
  padding: 32px;
  background: var(--bg-primary);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.04);
  transition: border-color 0.3s;
}

.pf-item:hover { border-color: rgba(232, 145, 58, 0.15); }

.pf-number {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 2rem;
  color: rgba(232, 145, 58, 0.25);
  line-height: 1;
  flex-shrink: 0;
}

.pf-content h3 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.pf-content p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ═══════ CLOSING ═══════ */
.closing {
  position: relative;
  padding: 140px 0;
  text-align: center;
  overflow: hidden;
}

.closing-glow {
  position: absolute;
  bottom: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(232, 145, 58, 0.1) 0%, rgba(192, 57, 43, 0.05) 50%, transparent 70%);
  pointer-events: none;
}

.closing h2 {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
  position: relative;
}

.closing-text {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 680px;
  margin: 0 auto 48px;
  line-height: 1.8;
  position: relative;
}

.closing-price {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  position: relative;
}

.price-from {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.price-amount {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 3.5rem;
  color: var(--accent);
  line-height: 1.1;
}

.price-note {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ═══════ FOOTER ═══════ */
.site-footer {
  padding: 48px 0 32px;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--text-primary);
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 12px;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.footer-sep { color: rgba(255,255,255,0.1); }

.footer-bottom {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ═══════ RESPONSIVE ═══════ */
@media (max-width: 900px) {
  .benefits-grid {
    grid-template-columns: 1fr 1fr;
  }
  .science-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .product-features {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .hero { min-height: 80vh; padding: 100px 20px 60px; }
  .hero-glow { width: 350px; height: 350px; }
  .benefits-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
  .stat-divider { display: none; }
  .hero-stats { flex-direction: column; }
  .pf-item { flex-direction: column; gap: 12px; }
  .footer-content { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
  .closing-price .price-amount { font-size: 2.5rem; }
  .compare-table { font-size: 0.8rem; }
  .compare-table td, .compare-table th { padding: 10px 8px; }
}