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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #fff;
  color: #1a1a1a;
  line-height: 1.5;
}

.lp-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  border-bottom: 1px solid #f0f0ee;
  position: sticky;
  top: 0;
  background: #fff;
  z-index: 100;
}

.lp-logo { font-size: 17px; font-weight: 600; letter-spacing: -0.3px; }
.lp-logo span { color: #2d6a4f; }
.lp-nav-right { display: flex; gap: 12px; align-items: center; }

.btn-ghost {
  font-size: 13px;
  color: #666;
  text-decoration: none;
  padding: 7px 16px;
  border: 1px solid #e8e8e6;
  border-radius: 8px;
  transition: background 0.15s;
}
.btn-ghost:hover { background: #f5f5f3; }

.btn-solid {
  font-size: 13px;
  color: #fff;
  background: #1a1a1a;
  padding: 7px 16px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
}
.btn-solid:hover { background: #333; }

.hero {
  padding: 96px 48px 80px;
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.hero-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: #2d6a4f;
  background: #e8f4ee;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.6s 0.1s forwards;
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 20px;
  opacity: 0;
  animation: fadeUp 0.6s 0.2s forwards;
}

.hero h1 em { color: #2d6a4f; font-style: normal; }

.hero p {
  font-size: 17px;
  color: #666;
  line-height: 1.6;
  max-width: 520px;
  margin: 0 auto 36px;
  opacity: 0;
  animation: fadeUp 0.6s 0.3s forwards;
}

.hero-btns {
  display: flex;
  gap: 12px;
  justify-content: center;
  opacity: 0;
  animation: fadeUp 0.6s 0.4s forwards;
}

.btn-large {
  font-size: 15px;
  font-weight: 500;
  padding: 12px 28px;
  border-radius: 10px;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
}

.btn-large-solid { background: #1a1a1a; color: #fff; border: none; }
.btn-large-solid:hover { background: #333; }
.btn-large-ghost { background: none; color: #1a1a1a; border: 1px solid #e8e8e6; }
.btn-large-ghost:hover { background: #f5f5f3; }

.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid #f0f0ee;
  border-bottom: 1px solid #f0f0ee;
  opacity: 0;
  animation: fadeUp 0.6s 0.5s forwards;
}

.stat-item {
  padding: 28px 24px;
  text-align: center;
  border-right: 1px solid #f0f0ee;
}
.stat-item:last-child { border-right: none; }

.stat-num {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.stat-num span { color: #2d6a4f; }
.stat-label { font-size: 12px; color: #aaa; margin-top: 4px; }

.section {
  padding: 80px 48px;
  max-width: 900px;
  margin: 0 auto;
}

.section-tag {
  font-size: 12px;
  font-weight: 500;
  color: #2d6a4f;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.8px;
  margin-bottom: 12px;
}

.section-sub {
  font-size: 16px;
  color: #666;
  line-height: 1.6;
  max-width: 500px;
  margin-bottom: 48px;
}

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

.step {
  padding: 24px;
  border: 1px solid #f0f0ee;
  border-radius: 12px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s, transform 0.5s;
}
.step.visible { opacity: 1; transform: translateY(0); }

.step-num {
  font-size: 12px;
  font-weight: 600;
  color: #2d6a4f;
  background: #e8f4ee;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.step h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.step p { font-size: 13px; color: #888; line-height: 1.6; }

.divider { height: 1px; background: #f0f0ee; margin: 0 48px; }

.philosophy {
  padding: 80px 48px;
  max-width: 900px;
  margin: 0 auto;
}

.phil-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 48px; }

.phil-card {
  padding: 28px;
  border: 1px solid #f0f0ee;
  border-radius: 12px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s, transform 0.5s;
}
.phil-card.visible { opacity: 1; transform: translateY(0); }

.phil-accent {
  display: inline-block;
  width: 32px;
  height: 3px;
  background: #2d6a4f;
  border-radius: 2px;
  margin-bottom: 14px;
}

.phil-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 10px; }
.phil-card p { font-size: 13px; color: #888; line-height: 1.7; }

.backtest-section { background: #f9f9f7; padding: 80px 48px; }
.backtest-inner { max-width: 900px; margin: 0 auto; }
.backtest-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; }

.backtest-card {
  background: #fff;
  border: 1px solid #f0f0ee;
  border-radius: 12px;
  padding: 24px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s, transform 0.5s;
}
.backtest-card.visible { opacity: 1; transform: translateY(0); }

.backtest-num {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -1px;
}
.backtest-num.green { color: #2d6a4f; }
.backtest-desc { font-size: 13px; color: #aaa; margin-top: 4px; line-height: 1.5; }
.backtest-note { font-size: 12px; color: #bbb; margin-top: 32px; text-align: center; }

.cta-section {
  padding: 96px 48px;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}
.cta-section h2 { font-size: 36px; font-weight: 700; letter-spacing: -1px; margin-bottom: 16px; }
.cta-section p { font-size: 16px; color: #666; margin-bottom: 32px; line-height: 1.6; }

.lp-footer {
  border-top: 1px solid #f0f0ee;
  padding: 24px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-logo { font-size: 14px; font-weight: 600; }
.footer-logo span { color: #2d6a4f; }
.footer-note { font-size: 12px; color: #bbb; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
  .lp-nav { padding: 14px 20px; }
  .hero { padding: 60px 20px 48px; }
  .hero h1 { font-size: 32px; }
  .hero-btns { flex-direction: column; align-items: center; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .steps { grid-template-columns: 1fr; }
  .phil-grid { grid-template-columns: 1fr; }
  .backtest-grid { grid-template-columns: 1fr; }
  .section, .philosophy, .backtest-section, .cta-section { padding: 48px 20px; }
  .divider { margin: 0 20px; }
}