/* 口袋 NDBI — 官网静态页样式（复用 web-prototype 色板） */
body.site-body {
  background: var(--color-bg);
  color: var(--color-text);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.site-header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-brand {
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--color-primary-dark);
  text-decoration: none;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.site-brand span {
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.78rem;
  display: block;
  letter-spacing: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  text-decoration: none;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-primary-dark);
  background: var(--color-primary-bg);
}

.site-nav-cta {
  background: var(--color-primary) !important;
  color: #fff !important;
  font-weight: 600;
}

.site-nav-cta:hover {
  background: var(--color-primary-dark) !important;
}

.site-nav-toggle {
  display: none;
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 1.1rem;
  cursor: pointer;
}

.site-main {
  min-height: calc(100vh - 280px);
}

.site-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Hero */
.site-hero {
  padding: 56px 0 48px;
  background: linear-gradient(165deg, #e8fafa 0%, #f2f5f5 45%, #fffbeb 100%);
  border-bottom: 1px solid var(--color-border-light);
}

.site-hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.site-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  line-height: 1.25;
  color: var(--color-text);
  margin-bottom: 16px;
  font-weight: 800;
}

.site-hero-lead {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 28px;
  max-width: 36rem;
}

.site-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.site-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.site-btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow);
}

.site-btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

.site-btn-secondary {
  background: #fff;
  color: var(--color-primary-dark);
  border: 1px solid var(--color-border);
}

.site-btn-secondary:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-bg);
}

.site-hero-note {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.site-qr-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border-light);
  text-align: center;
}

.site-qr-card img,
.site-qr-card svg {
  width: 168px;
  height: 168px;
  margin: 0 auto 12px;
  display: block;
}

.site-qr-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.site-qr-card strong {
  display: block;
  color: var(--color-text);
  font-size: 1rem;
  margin-bottom: 6px;
}

/* Sections */
.site-section {
  padding: 56px 0;
}

.site-section-alt {
  background: #fff;
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.site-section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 36px;
}

.site-section-head h2 {
  font-size: 1.55rem;
  color: var(--color-text);
  margin-bottom: 10px;
  font-weight: 800;
}

.site-section-head p {
  color: var(--color-text-secondary);
  font-size: 0.98rem;
  line-height: 1.6;
}

.site-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.site-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.site-card {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, transform 0.2s;
}

.site-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.site-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-primary-bg);
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.site-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--color-text);
}

.site-card p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin-bottom: 12px;
}

.site-card a {
  font-size: 0.86rem;
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

.site-card a:hover {
  text-decoration: underline;
}

/* Timeline / path */
.site-path {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
  margin-top: 8px;
}

.site-path-step {
  text-align: center;
  padding: 0 12px;
  position: relative;
}

.site-path-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
  font-size: 0.9rem;
}

.site-path-step h4 {
  font-size: 0.92rem;
  margin-bottom: 6px;
  color: var(--color-text);
}

.site-path-step p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.45;
}

/* Why us */
.site-why-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.site-why-item {
  padding: 20px;
  border-left: 4px solid var(--color-primary);
  background: #fff;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  box-shadow: var(--shadow-sm);
}

.site-why-item h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.site-why-item p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

/* Partners strip */
.site-partners {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.site-partner-pill {
  padding: 10px 18px;
  background: #fff;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 0.86rem;
  color: var(--color-text-secondary);
}

/* Disclaimer bar */
.site-disclaimer {
  background: var(--color-bg-warm);
  border-top: 1px solid #fde68a;
  padding: 16px 20px;
  font-size: 0.84rem;
  color: #92400e;
  line-height: 1.55;
  text-align: center;
}

.site-disclaimer a {
  color: #b45309;
  font-weight: 600;
}

/* Page inner (about, product, etc.) */
.site-page-hero {
  padding: 40px 0 32px;
  background: linear-gradient(180deg, #e8fafa 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border-light);
}

.site-page-hero h1 {
  font-size: 1.85rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.site-page-hero p {
  color: var(--color-text-secondary);
  max-width: 42rem;
  line-height: 1.6;
}

.site-content {
  padding: 40px 0 56px;
}

.site-prose {
  max-width: 720px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.site-prose h2 {
  font-size: 1.2rem;
  color: var(--color-text);
  margin: 28px 0 12px;
  font-weight: 700;
}

.site-prose p {
  margin-bottom: 14px;
}

.site-prose ul {
  margin: 0 0 16px 1.2em;
}

.site-prose li {
  margin-bottom: 8px;
}

.site-module {
  scroll-margin-top: 80px;
  padding: 32px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.site-module:last-child {
  border-bottom: none;
}

.site-module h2 {
  font-size: 1.25rem;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.site-module-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.site-tag {
  display: inline-block;
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--color-primary-bg);
  color: var(--color-primary-dark);
  font-weight: 600;
  margin-bottom: 10px;
}

.site-age-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.site-age-tab {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: #fff;
  font-size: 0.88rem;
  cursor: pointer;
  font-family: inherit;
}

.site-age-tab.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.site-age-panel {
  display: none;
}

.site-age-panel.active {
  display: block;
}

.site-age-panel ul {
  list-style: none;
  padding: 0;
}

.site-age-panel li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.92rem;
  color: var(--color-text-secondary);
}

/* Footer */
.site-footer {
  background: #1a3a3a;
  color: rgba(255, 255, 255, 0.88);
  padding: 48px 0 24px;
  margin-top: 0;
}

.site-footer-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 32px;
}

.site-footer h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 14px;
}

.site-footer a {
  display: block;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.88rem;
  margin-bottom: 8px;
  line-height: 1.45;
}

.site-footer a:hover {
  color: #5ac6c6;
}

.site-footer-brand {
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
}

.site-footer-desc {
  font-size: 0.86rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.65);
  max-width: 280px;
}

.site-footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.45);
}

.site-footer-bottom a {
  display: inline;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.78rem;
}

.site-cta-band {
  background: linear-gradient(100deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: #fff;
  padding: 40px 20px;
  text-align: center;
  border-radius: var(--radius);
  margin: 40px 0 0;
}

.site-cta-band h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.site-cta-band p {
  opacity: 0.92;
  margin-bottom: 20px;
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .site-hero-grid,
  .site-module-grid,
  .site-footer-grid {
    grid-template-columns: 1fr;
  }
  .site-grid-4,
  .site-grid-3,
  .site-why-list,
  .site-path {
    grid-template-columns: 1fr 1fr;
  }
  .site-path {
    gap: 20px;
  }
}

/* GEO：权威介绍、定价、FAQ */
.site-authority {
  background: var(--color-primary-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  margin-bottom: 8px;
}

.site-authority h2 {
  font-size: 1.35rem;
  margin-bottom: 16px;
  color: var(--color-primary-dark);
}

.site-authority p {
  margin-bottom: 12px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.site-pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 28px 0 20px;
}

.site-pricing-card {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  background: #fff;
}

.site-pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 8px 28px rgba(13, 148, 136, 0.12);
}

.site-pricing-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.site-pricing-card .site-price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin: 8px 0 4px;
}

.site-pricing-card .site-price-note {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.site-pricing-card ul {
  margin: 0 0 16px 1.1em;
  line-height: 1.7;
  font-size: 0.92rem;
}

.site-pricing-compare {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.site-faq-list .site-faq-item {
  border-bottom: 1px solid var(--color-border-light);
  padding: 24px 0;
}

.site-faq-list .site-faq-item:last-child {
  border-bottom: none;
}

.site-faq-item h2 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--color-primary-dark);
}

.site-faq-item p {
  line-height: 1.75;
  color: var(--color-text-secondary);
}

@media (max-width: 640px) {
  .site-nav-toggle {
    display: block;
  }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: #fff;
    padding: 12px;
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: var(--shadow);
  }
  .site-nav.open {
    display: flex;
  }
  .site-header-inner {
    position: relative;
    flex-wrap: wrap;
  }
  .site-grid-4,
  .site-grid-3,
  .site-why-list,
  .site-path {
    grid-template-columns: 1fr;
  }
  .site-pricing-grid {
    grid-template-columns: 1fr;
  }
}