/* Landing page styles */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15, 18, 32, .85); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1140px; margin: 0 auto; padding: 0 24px;
  height: 60px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.nav-brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; color: var(--text); text-decoration: none; }
.nav-brand .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent2); box-shadow: 0 0 10px var(--accent2); }
.nav-links { display: flex; gap: 24px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 14px; transition: color .15s; }
.nav-links a:hover { color: var(--text); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.lang-select {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 7px 10px; font-size: 13px; outline: none;
}
.nav-cta { padding: 8px 16px; font-size: 14px; }

.hero {
  text-align: center; padding: 80px 24px 70px;
  background: radial-gradient(ellipse at top, rgba(79,124,255,.12), transparent 60%);
}
.hero-inner { max-width: 720px; margin: 0 auto; }
.hero h1 { font-size: 42px; margin: 0 0 14px; line-height: 1.2; font-weight: 800; }
.hero-sub { font-size: 18px; color: var(--muted); margin: 0 0 28px; line-height: 1.6; }
.hero-cta {
  font-size: 16px; padding: 14px 36px; border-radius: 12px;
  background: var(--accent); color: #fff; box-shadow: 0 8px 24px rgba(79,124,255,.35);
}
.hero-note { font-size: 13px; color: var(--muted); margin: 14px 0 0; }

.section { padding: 70px 24px; }
.section-alt { background: var(--panel); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-inner { max-width: 1140px; margin: 0 auto; }
.section-title { font-size: 30px; text-align: center; margin: 0 0 8px; font-weight: 700; }
.section-sub { font-size: 16px; color: var(--muted); text-align: center; margin: 0 0 40px; }

.feature-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px;
}
.feature-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 28px;
  transition: transform .15s, border-color .15s;
}
.section-alt .feature-card { background: var(--bg); }
.feature-card:hover { transform: translateY(-3px); border-color: var(--accent); }
.feature-ic { font-size: 32px; margin-bottom: 12px; }
.feature-card h3 { margin: 0 0 8px; font-size: 17px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }

.scene-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.scene-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: 16px; padding: 28px;
}
.scene-num { font-size: 24px; color: var(--accent2); margin-bottom: 10px; }
.scene-card h3 { margin: 0 0 8px; font-size: 18px; }
.scene-desc { color: var(--muted); font-size: 14px; margin: 0 0 14px; }
.scene-card ul { list-style: none; padding: 0; margin: 0; }
.scene-card li { padding: 4px 0 4px 18px; position: relative; font-size: 14px; color: var(--muted); }
.scene-card li::before { content: '•'; position: absolute; left: 4px; color: var(--accent2); }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.step { text-align: center; }
.step-num {
  width: 44px; height: 44px; border-radius: 50%; background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 700;
  margin: 0 auto 14px;
}
.step h3 { margin: 0 0 6px; font-size: 16px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

.pricing-card {
  max-width: 400px; margin: 0 auto; text-align: center;
  background: var(--panel); border: 2px solid var(--accent); border-radius: 20px; padding: 36px;
}
.pricing-name { font-size: 18px; color: var(--muted); margin-bottom: 8px; }
.pricing-price { font-size: 52px; font-weight: 800; margin-bottom: 24px; }
.pricing-features { list-style: none; padding: 0; margin: 0 0 28px; text-align: left; }
.pricing-features li { padding: 8px 0 8px 26px; position: relative; font-size: 15px; }
.pricing-features li::before { content: '✓'; position: absolute; left: 4px; color: var(--accent2); font-weight: 700; }

.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  background: var(--bg); border: 1px solid var(--border); border-radius: 12px;
  margin-bottom: 10px; overflow: hidden;
}
.section-alt .faq-item { background: var(--panel); }
.faq-item summary {
  padding: 16px 20px; font-size: 15px; cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::after { content: '+'; font-size: 20px; color: var(--muted); transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 20px 16px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }

.cta-section { background: radial-gradient(ellipse at center, rgba(79,124,255,.1), transparent 70%); }

.footer { border-top: 1px solid var(--border); padding: 32px 24px; }
.footer-inner { max-width: 1140px; margin: 0 auto; text-align: center; }
.footer-brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; margin-bottom: 8px; }
.footer-brand .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent2); }

.modal-card { max-width: 480px; }
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.modal-head h2 { margin: 0; font-size: 22px; }
.icon-btn { padding: 6px 10px; font-size: 16px; }
.small { padding: 6px 12px; font-size: 13px; }

/* responsive */
@media (max-width: 760px) {
  .nav-links { display: none; }
  .hero { padding: 50px 20px 40px; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 15px; }
  .section { padding: 48px 20px; }
  .section-title { font-size: 22px; }
  .pricing-price { font-size: 42px; }
}