:root {
  --bg: #090d16;
  --bg-card: rgba(17, 24, 39, 0.6);
  --text: #f3f4f6;
  --text-muted: #9ca3af;
  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --border: rgba(55, 65, 81, 0.4);
  --font: 'Outfit', Inter, system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Container */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 20px;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: radial-gradient(circle at top, #1e3a8a 0%, #090d16 60%);
  padding: 80px 20px;
  border-bottom: 1px solid var(--border);
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 800px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.app-badge {
  background-color: rgba(59, 130, 246, 0.15);
  color: var(--accent-hover);
  border: 1px solid rgba(59, 130, 246, 0.3);
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.15;
  background: linear-gradient(135deg, #ffffff 40%, #93c5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tagline {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 650px;
}

/* Download Container */
.download-container {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background-color: var(--accent);
  color: white;
  text-decoration: none;
  font-weight: 700;
  font-size: 16px;
  padding: 16px 32px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-download:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(59, 130, 246, 0.5);
}

.file-info {
  font-size: 12px;
  color: var(--text-muted);
}

/* Section Title */
.section-title {
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  letter-spacing: -0.5px;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
}

.feature-card {
  background-color: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  font-size: 32px;
  width: 50px;
  height: 50px;
  background-color: rgba(59, 130, 246, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* How to run Section */
.how-to-run {
  background-color: rgba(17, 24, 39, 0.4);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  font-size: 16px;
  padding-left: 20px;
}

.steps-list li {
  padding-left: 10px;
}

.steps-list li strong {
  color: white;
}

.or-terminal {
  display: inline-block;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

.steps-list code {
  background-color: #111827;
  color: var(--accent-hover);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 14px;
  border: 1px solid var(--border);
}

/* Footer */
footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 34px;
  }
  .tagline {
    font-size: 15px;
  }
}
