:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2035;
  --fg-primary: #f0f2f5;
  --fg-secondary: #8b95a8;
  --fg-muted: #4a5568;
  --accent-cold: #38bdf8;
  --accent-cold-glow: rgba(56, 189, 248, 0.15);
  --accent-heat: #f59e0b;
  --accent-heat-glow: rgba(245, 158, 11, 0.15);
  --accent-spa: #a78bfa;
  --accent-recovery: #34d399;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Outfit', system-ui, sans-serif;
  --max-width: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

em { font-family: var(--font-display); font-style: italic; font-weight: 400; }

/* ========== HERO ========== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  padding: 2rem;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 30% 20%, rgba(56,189,248,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 70% 80%, rgba(245,158,11,0.06) 0%, transparent 60%),
    linear-gradient(180deg, var(--bg-primary) 0%, #0d1320 100%);
  pointer-events: none;
}

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

.hero-tag {
  font-size: 0.85rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent-cold);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 400;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero h1 em {
  background: linear-gradient(135deg, var(--accent-cold) 0%, var(--accent-heat) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--fg-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 1;
}

.hero-scroll-hint span {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, var(--fg-muted) 0%, transparent 100%);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ========== PHILOSOPHY ========== */
.philosophy {
  padding: 8rem 2rem;
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255,255,255,0.04);
}

.philosophy-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.philosophy-label,
.section-label {
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent-cold);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.philosophy h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  max-width: 700px;
}

.philosophy-text {
  font-size: 1.15rem;
  color: var(--fg-secondary);
  max-width: 650px;
  line-height: 1.8;
  margin-bottom: 4rem;
}

.philosophy-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding-top: 3rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--fg-primary);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--fg-muted);
  letter-spacing: 0.02em;
}

/* ========== CATEGORIES ========== */
.categories {
  padding: 8rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.categories-header {
  margin-bottom: 4rem;
}

.categories-header h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 400;
  line-height: 1.2;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.cat-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 16px;
  padding: 2.5rem;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.cat-card:hover {
  transform: translateY(-2px);
}

.cat-cold:hover { border-color: var(--accent-cold); }
.cat-heat:hover { border-color: var(--accent-heat); }
.cat-spa:hover { border-color: var(--accent-spa); }
.cat-recovery:hover { border-color: var(--accent-recovery); }

.cat-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  margin-bottom: 1.5rem;
}

.cat-cold .cat-icon { background: var(--accent-cold-glow); color: var(--accent-cold); }
.cat-heat .cat-icon { background: var(--accent-heat-glow); color: var(--accent-heat); }
.cat-spa .cat-icon { background: rgba(167,139,250,0.15); color: var(--accent-spa); }
.cat-recovery .cat-icon { background: rgba(52,211,153,0.15); color: var(--accent-recovery); }

.cat-card h3 {
  font-family: var(--font-body);
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.cat-card p {
  color: var(--fg-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ========== CONTRAST SECTION ========== */
.contrast-section {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.contrast-inner {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 3rem;
  align-items: center;
}

.contrast-cold,
.contrast-hot {
  text-align: center;
  padding: 3rem 2rem;
  border-radius: 20px;
}

.contrast-cold {
  background: linear-gradient(180deg, rgba(56,189,248,0.08) 0%, transparent 100%);
  border: 1px solid rgba(56,189,248,0.15);
}

.contrast-hot {
  background: linear-gradient(180deg, rgba(245,158,11,0.08) 0%, transparent 100%);
  border: 1px solid rgba(245,158,11,0.15);
}

.temp-display {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 600;
  display: block;
  margin-bottom: 0.5rem;
}

.contrast-cold .temp-display { color: var(--accent-cold); }
.contrast-hot .temp-display { color: var(--accent-heat); }

.contrast-cold h3,
.contrast-hot h3 {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.contrast-cold p,
.contrast-hot p {
  color: var(--fg-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.contrast-divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.divider-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(180deg, var(--accent-cold), var(--accent-heat));
}

.divider-text {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-muted);
  text-align: center;
  line-height: 1.6;
}

/* ========== CLOSING ========== */
.closing {
  padding: 8rem 2rem;
  text-align: center;
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: 1.5rem;
}

.closing p {
  font-size: 1.1rem;
  color: var(--fg-secondary);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.closing-origin {
  font-size: 0.85rem;
  color: var(--fg-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 2.5rem;
}

/* ========== FOOTER ========== */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid rgba(255,255,255,0.04);
  text-align: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--fg-muted);
  letter-spacing: 0.1em;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .categories-grid {
    grid-template-columns: 1fr;
  }

  .contrast-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .contrast-divider {
    flex-direction: row;
    gap: 1.5rem;
  }

  .divider-line {
    width: 60px;
    height: 1px;
  }

  .philosophy-stats {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .hero-scroll-hint {
    display: none;
  }

  .cat-card {
    padding: 2rem;
  }

  .philosophy,
  .categories,
  .closing {
    padding: 5rem 1.5rem;
  }

  .contrast-section {
    padding: 4rem 1.5rem;
  }
}