:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161f;
  --text-primary: #e8e6e3;
  --text-secondary: #9a9590;
  --text-muted: #5a5550;
  --gold: #c9a84c;
  --gold-light: #e8c95a;
  --gold-dark: #8a6d2b;
  --accent-blue: #3a5a8a;
  --accent-teal: #2a6a6a;
  --radius: 12px;
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* === HERO === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 120px 24px 80px;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}

.wave-line {
  position: absolute;
  width: 200%;
  height: 1px;
  left: -50%;
  background: linear-gradient(90deg, transparent 0%, var(--gold-dark) 30%, var(--gold) 50%, var(--gold-dark) 70%, transparent 100%);
  opacity: 0.12;
  animation: wave-drift 12s ease-in-out infinite;
}

.w1 { top: 20%; animation-delay: 0s; }
.w2 { top: 35%; animation-delay: -2.5s; opacity: 0.08; }
.w3 { top: 50%; animation-delay: -5s; }
.w4 { top: 65%; animation-delay: -7.5s; opacity: 0.08; }
.w5 { top: 80%; animation-delay: -10s; }

@keyframes wave-drift {
  0%, 100% { transform: translateX(-5%) scaleY(1); }
  50% { transform: translateX(5%) scaleY(2.5); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid var(--gold-dark);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.2rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
}

.gold-text {
  background: linear-gradient(135deg, var(--gold-light), var(--gold), var(--gold-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

.hero-visual {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  pointer-events: none;
}

.frequency-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--gold);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: pulse-ring 6s ease-in-out infinite;
}

.r1 { width: 300px; height: 300px; opacity: 0.06; animation-delay: 0s; }
.r2 { width: 500px; height: 500px; opacity: 0.04; animation-delay: -2s; }
.r3 { width: 700px; height: 700px; opacity: 0.02; animation-delay: -4s; }

@keyframes pulse-ring {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.06; }
  50% { transform: translate(-50%, -50%) scale(1.08); opacity: 0.12; }
}

.qi-symbol {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 120px;
  color: var(--gold);
  opacity: 0.04;
  font-family: serif;
}

/* === PHILOSOPHY === */
.philosophy {
  padding: 120px 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.section-label {
  display: block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}

.section-label.center {
  text-align: center;
}

.philosophy-text h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
}

.philosophy-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.philosophy-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.meridian-lines {
  position: relative;
  width: 280px;
  height: 400px;
}

.meridian {
  position: absolute;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, transparent, var(--gold-dark), var(--gold), var(--gold-dark), transparent);
  opacity: 0.2;
  animation: meridian-pulse 4s ease-in-out infinite;
}

.m1 { left: 30%; animation-delay: 0s; }
.m2 { left: 50%; animation-delay: -1.3s; }
.m3 { left: 70%; animation-delay: -2.6s; }

@keyframes meridian-pulse {
  0%, 100% { opacity: 0.1; }
  50% { opacity: 0.35; }
}

.acupoint {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 20px var(--gold-dark);
  animation: acupoint-glow 3s ease-in-out infinite;
}

.a1 { left: calc(30% - 5px); top: 20%; animation-delay: 0s; }
.a2 { left: calc(50% - 5px); top: 40%; animation-delay: -0.8s; }
.a3 { left: calc(70% - 5px); top: 60%; animation-delay: -1.6s; }
.a4 { left: calc(50% - 5px); top: 80%; animation-delay: -2.4s; }

@keyframes acupoint-glow {
  0%, 100% { box-shadow: 0 0 10px var(--gold-dark); transform: scale(1); }
  50% { box-shadow: 0 0 30px var(--gold); transform: scale(1.3); }
}

/* === FEATURES === */
.features {
  padding: 100px 24px 120px;
  max-width: 1100px;
  margin: 0 auto;
}

.features-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 64px;
  line-height: 1.15;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid rgba(201, 168, 76, 0.08);
  border-radius: var(--radius);
  padding: 40px 32px;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.feature-card:hover {
  border-color: rgba(201, 168, 76, 0.2);
  transform: translateY(-4px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  color: var(--gold);
  margin-bottom: 24px;
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* === SCIENCE / STATS === */
.science {
  padding: 80px 24px;
  background: var(--bg-secondary);
  border-top: 1px solid rgba(201, 168, 76, 0.06);
  border-bottom: 1px solid rgba(201, 168, 76, 0.06);
}

.science-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

/* === CLOSING === */
.closing {
  padding: 140px 24px;
  text-align: center;
}

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

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 28px;
}

.closing-text {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 40px;
}

.closing-tagline {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--gold);
}

/* === FOOTER === */
.site-footer {
  padding: 48px 24px;
  border-top: 1px solid rgba(201, 168, 76, 0.06);
}

.footer-content {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .philosophy-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .philosophy-visual {
    order: -1;
  }

  .meridian-lines {
    width: 200px;
    height: 280px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .science-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .footer-content {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .hero {
    padding: 100px 20px 60px;
    min-height: auto;
  }

  .r1 { width: 200px; height: 200px; }
  .r2 { width: 320px; height: 320px; }
  .r3 { width: 440px; height: 440px; }

  .qi-symbol { font-size: 80px; }
}

@media (max-width: 480px) {
  body { font-size: 16px; }

  .science-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .feature-card {
    padding: 28px 24px;
  }
}