:root {
  --bg: #0F141A;
  --card: #161E29;
  --text: #E6EDF3;
  --muted: #8B949E;
  --primary: #4DA3FF;
  --primary-hover: #218BFF;
  --accent: #1976D2;
  --border: rgba(255,255,255,0.1);
  --radius: 16px;
  --shadow: 0 8px 24px rgba(0,0,0,0.2);
}

* { box-sizing: border-box; outline: none; }
html { scroll-behavior: smooth; }
html, body { 
  margin: 0; 
  padding: 0; 
  background: var(--bg); 
  color: var(--text); 
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, 'PingFang SC', 'Noto Sans', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif; 
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--text); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary); }

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* Header */
header { 
  border-bottom: 1px solid var(--border); 
  backdrop-filter: saturate(180%) blur(16px); 
  position: sticky; 
  top: 0; 
  z-index: 100; 
  background: rgba(15,20,26,0.75); 
}
.nav { 
  display: flex; 
  align-items: center; 
  justify-content: space-between; 
  height: 64px; 
}
.brand { 
  display: flex; 
  align-items: center; 
  gap: 12px; 
  font-weight: 700; 
  font-size: 18px; 
  letter-spacing: -0.5px;
}
.brand .logo { 
  display: inline-block; 
  width: 32px; 
  height: 32px; 
  border-radius: 8px; 
  background: url('./logo.png') center/cover no-repeat; 
  box-shadow: 0 4px 12px rgba(77,163,255,0.2); 
}

.nav-links { display: flex; gap: 24px; }
.nav-links a { font-size: 14px; font-weight: 500; opacity: 0.8; }
.nav-links a:hover { opacity: 1; color: var(--primary); }

.nav-cta a { 
  background: var(--primary); 
  color: #fff; 
  padding: 8px 16px; 
  border-radius: 20px; 
  font-weight: 600; 
  font-size: 13px; 
  transition: background 0.2s, transform 0.1s;
}
.nav-cta a:hover { background: var(--primary-hover); }
.nav-cta a:active { transform: scale(0.96); }

/* Hero Section */
.hero { 
  padding: 80px 0 60px; 
  display: flex; 
  align-items: center; 
  justify-content: space-between;
  gap: 40px;
  overflow: hidden;
}
.hero-content { flex: 1; max-width: 540px; animation: fadeUp 0.8s ease-out; }
.hero h1 { 
  font-size: 48px; 
  line-height: 1.1; 
  margin: 0 0 16px; 
  letter-spacing: -1px; 
  background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p { margin: 0 0 24px; font-size: 20px; color: var(--muted); font-weight: 400; }

.hero-actions { display: flex; gap: 16px; margin-top: 32px; }
.btn { 
  display: inline-flex; 
  align-items: center; 
  justify-content: center;
  padding: 12px 24px; 
  border-radius: 12px; 
  font-weight: 600; 
  font-size: 15px; 
  cursor: pointer;
  transition: all 0.2s;
}
.btn.primary { 
  background: var(--primary); 
  color: #fff; 
  box-shadow: 0 4px 12px rgba(77,163,255,0.3); 
}
.btn.primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(77,163,255,0.4); }
.btn.ghost { background: rgba(255,255,255,0.05); color: var(--text); border: 1px solid var(--border); }
.btn.ghost:hover { background: rgba(255,255,255,0.1); }

.note { font-size: 13px; color: var(--muted); margin-top: 16px; display: flex; align-items: center; gap: 6px; }
.note::before { content: ''; display: block; width: 6px; height: 6px; background: #34C759; border-radius: 50%; }

/* Hero Visual (Image) */
.hero-visual { flex: 1; display: flex; justify-content: center; position: relative; perspective: 1000px; }
.hero-img-container {
  width: 280px;
  height: auto;
  position: relative;
  border-radius: 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  animation: fadeUp 1s ease-out 0.2s backwards;
  transition: transform 0.4s ease;
}
.hero-img-container:hover { transform: translateY(-10px) rotateY(-5deg) rotateX(5deg); }
.hero-img {
  width: 100%;
  display: block;
  border-radius: 40px;
  border: 8px solid #2a2a2a;
}

/* Sections */
.section { padding: 60px 0; }
.section h2 { font-size: 28px; margin-bottom: 32px; text-align: center; }

/* Showcase */
.showcase { display: flex; flex-direction: column; gap: 100px; margin-bottom: 80px; }
.showcase-item { display: flex; align-items: center; justify-content: space-between; gap: 60px; }
.showcase-item.alt { flex-direction: row-reverse; }
.showcase-text { flex: 1; max-width: 480px; }
.showcase-icon { font-size: 40px; margin-bottom: 20px; display: block; }
.showcase-text h3 { font-size: 32px; margin: 0 0 16px; font-weight: 700; }
.showcase-text p { font-size: 18px; color: var(--muted); line-height: 1.6; margin: 0; }
.showcase-visual { flex: 1; display: flex; justify-content: center; }
.showcase-visual img {
  width: 100%;
  max-width: 360px;
  border-radius: 24px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.showcase-visual img:hover { transform: scale(1.02); box-shadow: 0 30px 60px rgba(77,163,255,0.15); }

.cards { 
  display: grid; 
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); 
  gap: 24px; 
}
.card { 
  background: var(--card); 
  border: 1px solid var(--border); 
  border-radius: var(--radius); 
  padding: 24px; 
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(77,163,255,0.2);
}
.card-icon { font-size: 32px; margin-bottom: 16px; display: block; }
.card h3 { margin: 0 0 8px; font-size: 18px; font-weight: 600; }
.card p { margin: 0; font-size: 14px; color: var(--muted); line-height: 1.5; }

/* Pricing */
.pricing { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.price-card { 
  background: var(--card); 
  border: 1px solid var(--border); 
  border-radius: var(--radius); 
  padding: 32px; 
  position: relative;
  display: flex;
  flex-direction: column;
}
.price-card h3 { margin: 0 0 16px; font-size: 20px; display: flex; align-items: center; justify-content: space-between; }
.price-badge { 
  background: rgba(77,163,255,0.15); 
  color: #7bbaff; 
  border: 1px solid rgba(77,163,255,0.2); 
  padding: 4px 8px; 
  border-radius: 6px; 
  font-size: 12px; 
  font-weight: 600; 
}
.price-features { margin: 0 0 24px; padding: 0; list-style: none; flex: 1; }
.price-features li { 
  margin: 12px 0; 
  font-size: 15px; 
  color: var(--text); 
  padding-left: 24px; 
  position: relative; 
}
.price-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}
.price-card .hero-actions { margin-top: auto; width: 100%; }
.price-card .btn { width: 100%; }

/* Footer */
footer { border-top: 1px solid var(--border); margin-top: 60px; background: #0a0d11; }
.footer-inner { padding: 40px 24px; flex-direction: column; gap: 24px; align-items: center; }
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; }
.footer-links a { color: var(--muted); font-size: 14px; }
.footer-links a:hover { color: var(--text); }

/* Animations */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .hero { flex-direction: column; text-align: center; padding: 40px 0; }
  .hero-content { max-width: 100%; }
  .hero h1 { font-size: 36px; }
  .hero-actions { justify-content: center; }
  .note { justify-content: center; }
  
  .nav-links { display: none; } /* Simplify for now */
  
  .hero-img-container { width: 240px; }
  
  .showcase { gap: 60px; }
  .showcase-item, .showcase-item.alt { flex-direction: column-reverse; text-align: center; gap: 32px; }
  .showcase-text { max-width: 100%; }
  .showcase-visual img { max-width: 280px; }
  
  .footer-inner { text-align: center; }
}