:root {
  --blue: #1B5FAA;
  --blue-dark: #124a87;
  --orange: #E8501F;
  --text: #2b2f33;
  --text-muted: #58595B;
  --bg-alt: #F7F9FC;
  --border: #e6e9ef;
  --radius: 14px;
  --max-width: 1140px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: #fff;
}

img { max-width: 100%; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.container-narrow { max-width: 760px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
  gap: 16px;
}

.brand-logo { height: 64px; width: auto; }

.main-nav {
  display: none;
  gap: 28px;
  flex: 1;
  justify-content: center;
}

.main-nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
}

.main-nav a:hover { color: var(--blue); }

.header-cta { display: none; }

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

.main-nav.open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 68px;
  left: 0;
  right: 0;
  background: #fff;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  gap: 16px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  border: 2px solid transparent;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--orange);
  color: #fff;
  box-shadow: 0 6px 16px rgba(232,80,31,0.28);
}

.btn-outline {
  background: transparent;
  color: var(--blue);
  border-color: var(--blue);
}

.btn-lg { padding: 14px 28px; font-size: 16px; }

/* Hero */
.hero {
  background: linear-gradient(135deg, #f0f5fb 0%, #ffffff 55%);
  padding: 56px 0 48px;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.eyebrow {
  color: var(--orange);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.5px;
  margin: 0 0 10px;
}

.hero-text h1 {
  font-size: 32px;
  line-height: 1.3;
  margin: 0 0 16px;
  color: var(--blue-dark);
}

.hero-sub {
  color: var(--text-muted);
  font-size: 16px;
  margin: 0 0 28px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-badge-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 12px 32px rgba(20,60,120,0.08);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.badge-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.badge-icon { font-size: 28px; }

.badge-row strong { display: block; font-size: 15px; }
.badge-row small { color: var(--text-muted); font-size: 13px; }

/* Trust strip */
.trust-strip {
  background: var(--blue);
  color: #fff;
  padding: 26px 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  text-align: center;
}

.trust-item strong { display: block; font-size: 20px; margin-bottom: 4px; }
.trust-item span { font-size: 13px; opacity: 0.85; }

/* Sections */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); }

.section-title {
  font-size: 26px;
  text-align: center;
  margin: 0 0 8px;
  color: var(--blue-dark);
}

.section-title.light { color: #fff; }

.section-sub {
  text-align: center;
  color: var(--text-muted);
  margin: 0 0 40px;
}

.section-sub.light { color: rgba(255,255,255,0.85); }

/* Process */
.process-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.process-step {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.step-num {
  color: var(--orange);
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 8px;
}

.process-step h3 { margin: 0 0 8px; font-size: 17px; }
.process-step p { margin: 0; color: var(--text-muted); font-size: 14px; }

/* Products */
.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.product-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  text-align: center;
}

.product-icon { font-size: 34px; margin-bottom: 10px; }
.product-card h3 { margin: 0 0 8px; font-size: 16px; }
.product-card p { margin: 0; color: var(--text-muted); font-size: 13px; }

/* Why us */
.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.why-item h3 {
  color: var(--blue);
  font-size: 17px;
  margin: 0 0 8px;
}

.why-item p { margin: 0; color: var(--text-muted); font-size: 14px; }

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: 12px; }

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text);
}

.faq-toggle {
  color: var(--orange);
  font-size: 20px;
  transition: transform 0.2s ease;
}

.faq-item.open .faq-toggle { transform: rotate(45deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
  padding: 0 20px;
}

.faq-a p { margin: 0 0 18px; color: var(--text-muted); font-size: 14px; }

.faq-item.open .faq-a { max-height: 200px; }

/* Contact */
.contact-section {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: #fff;
}

.contact-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 36px;
  text-align: center;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 15px;
}

.qr-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.qr-image {
  width: 180px;
  height: 180px;
  object-fit: contain;
  border-radius: 10px;
  margin: 0 auto 12px;
}

.qr-caption { color: var(--text-muted); font-size: 13px; margin: 0; }

/* Footer */
.site-footer {
  background: #14161a;
  color: rgba(255,255,255,0.7);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
  font-size: 13px;
}

.footer-logo {
  height: 32px;
  filter: brightness(0) invert(1);
  opacity: 0.85;
}

/* Floating CTA */
.floating-cta {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--orange);
  color: #fff;
  padding: 14px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 10px 24px rgba(232,80,31,0.35);
  z-index: 90;
}

/* Responsive */
@media (min-width: 640px) {
  .trust-grid { grid-template-columns: repeat(4, 1fr); }
  .product-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 860px) {
  .main-nav { display: flex; }
  .header-cta { display: inline-block; }
  .nav-toggle { display: none; }

  .hero-inner {
    flex-direction: row;
    align-items: center;
  }
  .hero-text { flex: 1.3; }
  .hero-badge-card { flex: 1; }
  .hero-text h1 { font-size: 40px; }

  .process-grid { grid-template-columns: repeat(5, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }

  .contact-inner { flex-direction: row; justify-content: space-between; text-align: left; }
  .contact-text { max-width: 520px; }
  .section-sub.light { text-align: left; margin: 0 0 24px; }
  .section-title.light { text-align: left; }
}