/* ================================
   上海GEO - 外部样式表
   ================================ */

:root {
  --color-primary: #1A56DB;
  --color-primary-dark: #1443B8;
  --color-gold: #F59E0B;
  --color-blue: #3B82F6;
  --color-bg: #FFFFFF;
  --color-bg-secondary: #F9FAFB;
  --color-text: #111827;
  --color-text-muted: #6B7280;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s;
}
.nav.scrolled { border-color: rgba(0,0,0,0.06); box-shadow: var(--shadow-sm); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; }
.logo { font-size: 20px; font-weight: 800; color: var(--color-text); text-decoration: none; }
.logo span { color: var(--color-primary); }
.nav-links { display: flex; gap: 32px; }
.nav-link { font-size: 14px; font-weight: 500; color: var(--color-text-muted); text-decoration: none; transition: color .2s; }
.nav-link:hover { color: var(--color-primary); }
.nav-cta { margin-left: 24px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 12px 24px; border-radius: var(--radius-md); font-size: 14px; font-weight: 600; text-decoration: none; border: none; cursor: pointer; transition: all .2s; }
.btn-accent { background: var(--color-primary); color: #fff; }
.btn-accent:hover { background: var(--color-primary-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(220,38,38,0.3); }
.btn-ghost { background: transparent; color: var(--color-text); border: 1.5px solid rgba(0,0,0,0.15); }
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* Hero */
.hero { padding: 120px 0 80px; background: linear-gradient(135deg, #EFF6FF 0%, #FFFFFF 60%); }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-tag { display: flex; gap: 12px; align-items: center; margin-bottom: 20px; }
.hero-badge { background: var(--color-primary); color: #fff; padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.hero-location { font-size: 13px; color: var(--color-text-muted); }
.hero h1 { font-size: 48px; font-weight: 900; line-height: 1.1; margin-bottom: 20px; color: var(--color-text); }
.hero h1 .highlight { color: var(--color-primary); }
.hero-desc { font-size: 16px; color: var(--color-text-muted); line-height: 1.8; margin-bottom: 28px; }
.hero-buttons { display: flex; gap: 12px; margin-bottom: 40px; }
.hero-stats { display: flex; gap: 32px; }
.hero-stat { text-align: center; }
.hero-stat-num { font-size: 28px; font-weight: 800; color: var(--color-primary); }
.hero-stat-label { font-size: 12px; color: var(--color-text-muted); margin-top: 4px; }

/* Hero Visual Card */
.hero-visual { position: relative; }
.hero-card-main {
  background: #fff; border-radius: var(--radius-xl); box-shadow: var(--shadow-lg);
  padding: 28px; border: 1px solid rgba(0,0,0,0.06);
}
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.card-title { font-size: 14px; font-weight: 600; color: var(--color-text); }
.card-badge { background: #FEF3C7; color: var(--color-gold); padding: 3px 10px; border-radius: 12px; font-size: 11px; font-weight: 600; }
.platform-bars { display: flex; flex-direction: column; gap: 12px; }
.platform-bar-item { }
.platform-bar-label { display: flex; justify-content: space-between; font-size: 12px; color: var(--color-text-muted); margin-bottom: 6px; }
.platform-bar-track { height: 8px; background: #F3F4F6; border-radius: 4px; overflow: hidden; }
.platform-bar-fill { height: 100%; border-radius: 4px; transition: width 1s ease; }
.bar-red { background: linear-gradient(90deg, #EF4444, #F87171); }
.bar-purple { background: linear-gradient(90deg, #8B5CF6, #A78BFA); }
.bar-green { background: linear-gradient(90deg, #10B981, #34D399); }
.bar-orange { background: linear-gradient(90deg, #F59E0B, #FBBF24); }
.bar-pink { background: linear-gradient(90deg, #EC4899, #F472B6); }
.bar-blue { background: linear-gradient(90deg, #3B82F6, #60A5FA); }

/* City Highlights */
.city-highlights { padding: 40px 0; background: #fff; }
.highlights-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.highlight-item { text-align: center; padding: 20px; }
.highlight-icon { font-size: 28px; margin-bottom: 8px; }
.highlight-num { font-size: 24px; font-weight: 800; color: var(--color-primary); margin-bottom: 4px; }
.highlight-label { font-size: 13px; color: var(--color-text-muted); }

/* Partner Section */
.partner-section { padding: 80px 0; background: linear-gradient(135deg, #EFF6FF, #F0F9FF); }
.partner-card { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.partner-badge { display: inline-block; background: var(--color-primary); color: #fff; padding: 4px 14px; border-radius: 20px; font-size: 12px; font-weight: 600; margin-bottom: 16px; }
.partner-content h2 { font-size: 32px; font-weight: 800; line-height: 1.2; margin-bottom: 16px; }
.partner-content h2 .highlight { color: var(--color-primary); }
.partner-content p { color: var(--color-text-muted); font-size: 15px; line-height: 1.8; margin-bottom: 24px; }
.partner-features { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.partner-feature { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--color-text); font-weight: 500; }
.check { color: var(--color-primary); font-weight: 700; }
.partner-stats-card {
  background: #fff; border-radius: var(--radius-xl); box-shadow: var(--shadow-md);
  padding: 32px; border: 1px solid rgba(0,0,0,0.06);
}
.partner-stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 24px; }
.partner-stat { text-align: center; }
.partner-stat-num { font-size: 28px; font-weight: 800; color: var(--color-primary); }
.partner-stat-label { font-size: 12px; color: var(--color-text-muted); }
.partner-tagline { font-size: 13px; color: var(--color-text-muted); text-align: center; font-weight: 500; }

/* Services */
.services { padding: 80px 0; background: var(--color-bg-secondary); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag { margin-bottom: 12px; }
.badge { display: inline-block; padding: 6px 14px; font-size: 12px; font-weight: 600; letter-spacing: 0.02em; border-radius: 100px; border: 1px solid; }
.badge-blue { background: rgba(26, 86, 219, 0.08); border-color: rgba(26, 86, 219, 0.2); color: #1A56DB; }
.badge-green { background: rgba(5, 150, 105, 0.08); border-color: rgba(5, 150, 105, 0.2); color: #059669; }
.badge-purple { background: rgba(124, 58, 237, 0.08); border-color: rgba(124, 58, 237, 0.2); color: #7C3AED; }
.badge-red { background: rgba(220, 38, 38, 0.08); border-color: rgba(220, 38, 38, 0.2); color: #DC2626; }
.badge-bj { background: rgba(26, 86, 219, 0.08); border-color: rgba(26, 86, 219, 0.2); color: #1A56DB; }
.badge-sh { background: rgba(26, 86, 219, 0.08); border-color: rgba(26, 86, 219, 0.2); color: #1A56DB; }
.section-header h2 { font-size: 32px; font-weight: 800; margin-bottom: 12px; }
.section-header p { font-size: 16px; color: var(--color-text-muted); max-width: 600px; margin: 0 auto; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { background: #fff; border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow-sm); border: 1px solid rgba(0,0,0,0.05); transition: transform .2s, box-shadow .2s; }
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.service-icon { font-size: 36px; margin-bottom: 16px; }
.service-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.service-card p { font-size: 14px; color: var(--color-text-muted); line-height: 1.7; margin-bottom: 14px; }
.service-card ul { list-style: none; }
.service-card ul li { font-size: 13px; color: var(--color-text-muted); padding: 4px 0; padding-left: 16px; position: relative; }
.service-card ul li::before { content: '·'; position: absolute; left: 4px; color: var(--color-primary); }

/* Why GEO */
.why-geo { padding: 80px 0; }
.why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.why-content h2 { font-size: 32px; font-weight: 800; line-height: 1.2; margin-bottom: 16px; }
.why-content h2 .highlight { color: var(--color-primary); }
.why-content > p { color: var(--color-text-muted); font-size: 15px; line-height: 1.8; margin-bottom: 28px; }
.why-list { display: flex; flex-direction: column; gap: 16px; }
.why-item { display: flex; gap: 16px; align-items: start; }
.why-item-icon { width: 36px; height: 36px; min-width: 36px; background: var(--color-primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 700; }
.why-item-text h4 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.why-item-text p { font-size: 13px; color: var(--color-text-muted); line-height: 1.7; }

/* Process */
.process { padding: 80px 0; background: var(--color-bg-secondary); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.process-step { text-align: center; padding: 28px 20px; background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); border: 1px solid rgba(0,0,0,0.05); }
.step-num { width: 48px; height: 48px; background: var(--color-primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; margin: 0 auto 16px; }
.process-step h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.process-step p { font-size: 13px; color: var(--color-text-muted); line-height: 1.6; }

/* Pricing */
.pricing { padding: 80px 0; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pricing-card { background: #fff; border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-sm); border: 2px solid transparent; transition: all .2s; }
.pricing-card.featured { border-color: var(--color-primary); box-shadow: var(--shadow-md); transform: scale(1.03); }
.pricing-tier { font-size: 13px; font-weight: 600; color: var(--color-primary); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.pricing-name { font-size: 14px; color: var(--color-text-muted); margin-bottom: 16px; }
.pricing-price { margin-bottom: 12px; }
.pricing-amount { font-size: 40px; font-weight: 900; color: var(--color-text); }
.pricing-period { font-size: 14px; color: var(--color-text-muted); }
.pricing-desc { font-size: 13px; color: var(--color-text-muted); margin-bottom: 20px; line-height: 1.6; }
.pricing-features { list-style: none; margin-bottom: 24px; }
.pricing-features li { font-size: 14px; color: var(--color-text); padding: 6px 0; padding-left: 20px; position: relative; }
.pricing-features li::before { content: '✓'; position: absolute; left: 0; color: var(--color-primary); font-weight: 700; }

/* Testimonials */
.testimonials { padding: 80px 0; background: var(--color-bg-secondary); }
.badge-bj { background: rgba(26, 86, 219, 0.08); border-color: rgba(26, 86, 219, 0.2); color: #1A56DB; }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial-card { background: #fff; border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow-sm); border: 1px solid rgba(0,0,0,0.05); }
.testimonial-quote { font-size: 14px; color: var(--color-text-muted); line-height: 1.8; font-style: italic; margin-bottom: 20px; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.author-avatar { width: 44px; height: 44px; background: var(--color-primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 700; }
.author-info h4 { font-size: 14px; font-weight: 600; }
.author-info p { font-size: 12px; color: var(--color-text-muted); }

/* FAQ */
.faq { background: var(--color-bg-secondary); padding: 100px 0; }
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.faq-item { background: #fff; border: 1px solid rgba(0,0,0,0.06); border-radius: var(--radius-lg); padding: 28px; position: relative; overflow: hidden; transition: all 0.3s ease; }
.faq-item::before { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; border-radius: 4px 0 0 4px; transition: width 0.3s ease; }
.faq-item:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08); border-color: transparent; }
.faq-item:hover::before { width: 5px; }
.faq-item:nth-child(6n+1)::before { background: var(--color-primary); }
.faq-item:nth-child(6n+2)::before { background: var(--color-primary); }
.faq-item:nth-child(6n+3)::before { background: var(--color-primary); }
.faq-item:nth-child(6n+4)::before { background: var(--color-primary); }
.faq-item:nth-child(6n+5)::before { background: var(--color-primary); }
.faq-item:nth-child(6n+6)::before { background: var(--color-primary); }
.faq-item-header { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 14px; }
.faq-num { width: 30px; height: 30px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 800; color: #fff; flex-shrink: 0; margin-top: 2px; background: var(--color-primary); }
.faq-item:nth-child(6n+1) .faq-num { background: var(--color-primary); }
.faq-item:nth-child(6n+2) .faq-num { background: var(--color-primary); }
.faq-item:nth-child(6n+3) .faq-num { background: var(--color-primary); }
.faq-item:nth-child(6n+4) .faq-num { background: var(--color-primary); }
.faq-item:nth-child(6n+5) .faq-num { background: var(--color-primary); }
.faq-item:nth-child(6n+6) .faq-num { background: var(--color-primary); }
.faq-q { font-size: 15px; font-weight: 700; color: var(--color-text); line-height: 1.5; flex: 1; }
.faq-divider { width: 100%; height: 1px; background: linear-gradient(90deg, rgba(0,0,0,0.06) 0%, transparent 100%); margin-bottom: 14px; }
.faq-a { font-size: 14px; color: var(--color-text-muted); line-height: 1.85; padding-left: 44px; }
@media (max-width: 768px) { .faq-list { grid-template-columns: 1fr; } .faq-a { padding-left: 0; } 
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .hero-buttons .btn-accent { display: none; }
  .cta-buttons .btn-accent { display: none; }}

/* CTA */
.cta-section { padding: 80px 0; background: linear-gradient(135deg, #1A56DB, #1443B8); }
.cta-inner { text-align: center; }
.cta-inner h2 { font-size: 36px; font-weight: 800; color: #fff; margin-bottom: 16px; line-height: 1.3; }
.cta-inner p { font-size: 16px; color: rgba(255,255,255,0.8); margin-bottom: 32px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; margin-bottom: 28px; }
.cta-features { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }
.cta-feature { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255,255,255,0.9); }

/* Footer */
footer { background: #111827; color: #9CA3AF; padding: 60px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo { font-size: 20px; font-weight: 800; color: #fff; }
.footer-brand p { font-size: 14px; margin-top: 12px; line-height: 1.7; }
.footer-col h4 { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links li a { font-size: 14px; color: #9CA3AF; text-decoration: none; transition: color .2s; }
.footer-links li a:hover { color: #fff; }
.footer-copyright { text-align: center; font-size: 13px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.08); }

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .partner-card { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-card.featured { transform: none; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .hero h1 { font-size: 32px; }
  .highlights-grid { grid-template-columns: 1fr 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
  .hero-stat-num { font-size: 22px; }
  .cta-buttons { flex-direction: column; }
}