:root {
  --bg: #ffffff;
  --bg-subtle: #f8f7ff;
  --text: #1f1f2e;
  --text-muted: #6b6b80;
  --border: #e8e6f0;
  --primary: #8b5cf6;
  --primary-hover: #7c3aed;
  --lotus-1: #a78bfa;
  --lotus-2: #c4b5fd;
  --lotus-3: #8b5cf6;
  --radius: 16px;
  --shadow: 0 4px 20px rgba(139, 92, 246, 0.08);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Hero */
.hero {
  text-align: center;
  padding: 80px 0 60px;
  background: linear-gradient(180deg, var(--bg-subtle) 0%, var(--bg) 100%);
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 32px;
}

.lotus-icon {
  width: 48px;
  height: 48px;
}

.logo-text {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}

.hero h1 {
  font-size: 40px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 16px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.subtitle {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 40px;
}

.cta-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 14px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.version {
  font-size: 13px;
  color: var(--text-muted);
}

/* Features */
.features {
  padding: 80px 0;
}

.features h2 {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 48px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all 0.2s ease;
}

.card:hover {
  border-color: var(--lotus-2);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 28px;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Philosophy */
.philosophy {
  padding: 80px 0;
  background: var(--bg-subtle);
}

.philosophy h2 {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 48px;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

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

.philosophy-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.philosophy-item h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.philosophy-item p {
  font-size: 14px;
  color: var(--text-muted);
}

/* Footer */
footer {
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid var(--border);
}

footer p {
  font-size: 14px;
  color: var(--text-muted);
}

footer .small {
  font-size: 12px;
  margin-top: 8px;
}

/* Responsive */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 28px;
  }
  .hero {
    padding: 60px 0 40px;
  }
  .subtitle {
    font-size: 16px;
  }
  .btn {
    width: 100%;
    justify-content: center;
  }
}