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

:root {
  --primary: #1565C0;
  --primary-light: #1E88E5;
  --primary-dark: #0D47A1;
  --accent: #F9A825;
  --text: #1a1a1a;
  --text-muted: #555;
  --bg: #fff;
  --bg-alt: #f5f7fa;
  --border: #e0e0e0;
  --radius: 12px;
}

body { font-family: 'Inter', sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.95); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo-link { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.header-icon { width: 36px; height: 36px; border-radius: 8px; }
.header-title { font-weight: 700; font-size: 1.1rem; }
.site-nav { display: flex; align-items: center; gap: 24px; }
.site-nav a { text-decoration: none; color: var(--text-muted); font-size: 0.95rem; font-weight: 500; transition: color 0.2s; }
.site-nav a:hover { color: var(--primary); }
.btn-nav { background: var(--primary); color: #fff !important; padding: 8px 18px; border-radius: 8px; }
.btn-nav:hover { background: var(--primary-dark) !important; }

/* Hero */
.hero { padding: 80px 0 64px; }
.hero-inner { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; }
.hero-text h1 { font-size: 2.6rem; font-weight: 700; line-height: 1.2; margin-bottom: 20px; color: var(--primary-dark); }
.hero-text p { font-size: 1.15rem; color: var(--text-muted); margin-bottom: 32px; max-width: 520px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-primary { display: inline-flex; align-items: center; gap: 8px; background: var(--primary); color: #fff; padding: 12px 24px; border-radius: 10px; text-decoration: none; font-weight: 600; font-size: 0.95rem; transition: background 0.2s; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: var(--primary); border: 2px solid var(--primary); padding: 10px 24px; border-radius: 10px; text-decoration: none; font-weight: 600; font-size: 0.95rem; transition: all 0.2s; }
.btn-secondary:hover { background: var(--primary); color: #fff; }
.app-icon { width: 160px; height: 160px; border-radius: 36px; box-shadow: 0 16px 48px rgba(21,101,192,0.2); }

/* Features */
.features { padding: 80px 0; background: var(--bg-alt); }
.features h2, .faq h2 { font-size: 2rem; font-weight: 700; text-align: center; margin-bottom: 48px; color: var(--primary-dark); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: #fff; border-radius: var(--radius); padding: 28px 24px; border: 1px solid var(--border); }
.feature-icon { font-size: 2rem; margin-bottom: 12px; }
.feature-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; }

/* CTA band */
.cta-band { background: var(--primary-dark); color: #fff; padding: 64px 0; text-align: center; }
.cta-inner h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
.cta-inner p { font-size: 1.05rem; opacity: 0.85; margin-bottom: 32px; }
.cta-inner .hero-actions { justify-content: center; }
.cta-band .btn-secondary { color: #fff; border-color: rgba(255,255,255,0.6); }
.cta-band .btn-secondary:hover { background: rgba(255,255,255,0.15); color: #fff; }

/* FAQ */
.faq { padding: 80px 0; }
.faq-list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.faq-item summary { padding: 18px 20px; font-weight: 600; font-size: 0.95rem; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.2rem; color: var(--primary); transition: transform 0.2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 20px 18px; font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; }
.faq-item p a { color: var(--primary); }

/* NFC page */
.nfc-page { padding: 64px 0 80px; }
.nfc-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.nfc-text h1 { font-size: 2.2rem; font-weight: 700; color: var(--primary-dark); margin-bottom: 16px; }
.nfc-lead { font-size: 1.05rem; color: var(--text-muted); margin-bottom: 40px; line-height: 1.7; }
.nfc-steps { display: flex; flex-direction: column; gap: 24px; margin-bottom: 32px; }
.nfc-step { display: flex; gap: 16px; align-items: flex-start; }
.nfc-step-num { flex-shrink: 0; width: 32px; height: 32px; border-radius: 50%; background: var(--primary); color: #fff; font-weight: 700; font-size: 0.9rem; display: flex; align-items: center; justify-content: center; margin-top: 2px; }
.nfc-step h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.nfc-step p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; }
.nfc-req { font-size: 0.85rem; color: #999; }
.nfc-video-wrap { position: sticky; top: 88px; }
.nfc-video { width: 100%; border-radius: var(--radius); box-shadow: 0 16px 48px rgba(21,101,192,0.15); background: #000; }
@media (max-width: 768px) {
  .nfc-inner { grid-template-columns: 1fr; gap: 40px; }
  .nfc-video-wrap { position: static; }
  .nfc-text h1 { font-size: 1.7rem; }
}

/* FAQ teaser (home page) */
.faq-teaser { padding: 64px 0; background: var(--bg-alt); border-top: 1px solid var(--border); }
.faq-teaser-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.faq-teaser h2 { font-size: 1.6rem; font-weight: 700; color: var(--primary-dark); margin-bottom: 8px; }
.faq-teaser p { font-size: 0.95rem; color: var(--text-muted); max-width: 480px; }

/* FAQ page */
.faq-page { padding: 64px 0 80px; }
.faq-contact { max-width: 720px; margin: 32px auto 0; text-align: center; font-size: 0.92rem; color: var(--text-muted); }
.faq-contact a { color: var(--primary); text-decoration: none; font-weight: 500; }
.faq-contact a:hover { text-decoration: underline; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 40px 0; background: var(--bg-alt); }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 16px; text-align: center; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1rem; }
.footer-icon { width: 28px; height: 28px; border-radius: 6px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { text-decoration: none; color: var(--text-muted); font-size: 0.9rem; }
.footer-links a:hover { color: var(--primary); }
.footer-copy { font-size: 0.82rem; color: #999; }

/* Responsive */
@media (max-width: 768px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-text p { margin: 0 auto 32px; }
  .hero-actions { justify-content: center; }
  .hero-image { display: none; }
  .hero-text h1 { font-size: 1.9rem; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .site-nav a:not(.btn-nav) { display: none; }
}
@media (max-width: 480px) {
  .features-grid { grid-template-columns: 1fr; }
}