/* Base */
body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  margin: 0;
  color: #1f2937;
}

a { color: inherit; text-decoration: none; }

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */
.landing-header {
  background: #001529;
  color: #fff;
}
.landing-header .header-inner {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 0 40px;
  min-height: 64px;
}
.landing-header .logo {
  color: #fff;
  font-size: 20px;
  font-weight: bold;
  margin-right: 40px;
  cursor: pointer;
}
.landing-header .landing-menu {
  flex: 1;
  display: flex;
  justify-content: center;
  gap: 24px;
}
.landing-header .landing-menu a { color: #fff; opacity: 0.85; }
.landing-header .landing-menu a:hover { opacity: 1; }

.landing-header .right-actions {
  margin-left: auto;
  display: flex;
  gap: 16px;
  align-items: center;
}
.landing-header .lang-select {
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid #d9d9d9;
  background: #fff;
  color: #000;
}
.landing-header .start-btn {
  background: #1890ff;
  color: #fff;
  padding: 8px 16px;
  border-radius: 4px;
}
.landing-header .start-btn:hover { filter: brightness(1.05); }

/* Hero */
.hero {
  padding: 120px 0 80px;
  background: #f5f7fa;
}
.hero .hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.hero .hero-text { max-width: 520px; text-align: left; }
.hero .hero-text .subtitle { font-size: 18px; color: #666; margin-bottom: 40px; }
.hero .hero-img { width: 48%; max-width: 600px; border-radius: 8px; }
.hero .cta-primary { background: #1890ff; color: #fff; padding: 12px 20px; border-radius: 6px; display: inline-block; }

/* Features */
.features { padding: 80px 0; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.feature-card { text-align: center; }
.feature-card .feature-img { width: 100%; max-width: 480px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); margin-bottom: 12px; }

/* Pricing */
.pricing { padding: 80px 0; }
.pricing .cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.price-card { text-align: center; border: 1px solid #f0f0f0; border-radius: 8px; padding: 24px; box-shadow: 0 2px 6px rgba(0,0,0,0.04); }
.price-card .buy-btn { margin-top: 12px; display: inline-block; width: 100%; background:#1890ff; color:#fff; padding:10px 14px; border-radius:6px; }

/* FAQ */
.faq { padding: 80px 0; }
.faq details { border: 1px solid #f0f0f0; border-radius: 8px; padding: 14px 16px; margin-bottom: 12px; background: #fff; }
.faq summary { cursor: pointer; font-weight: 600; }

/* Footer */
.landing-footer { text-align: center; background: #001529; color: #fff; padding: 24px 0; }

/* Responsive */
@media (max-width: 992px) {
  .hero .hero-inner { flex-direction: column; gap: 24px; }
  .hero .hero-img { width: 100%; }
  .feature-grid { grid-template-columns: 1fr; }
  .pricing .cards { grid-template-columns: 1fr; }
  .landing-header .landing-menu { display: none; }
}