/* 简约大气、端庄大方的企业风格 (Minimalist & Dignified Corporate Style) */
:root {
  --primary-blue: #1E40AF; /* Tailwind blue-800 */
  --secondary-blue: #3B82F6; /* Tailwind blue-500 */
  --text-main: #0F172A; /* slate-900 */
  --text-muted: #64748B; /* slate-500 */
  --bg-light: #F8FAFC; /* slate-50 */
  --bg-white: #FFFFFF;
  --border-light: #E2E8F0; /* slate-200 */
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: #F1F5F9;
}
::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94A3B8;
}

/* Base Styles */
html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
}

body {
  background-color: var(--bg-white);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

/* Navigation Sticky */
.nav-scrolled {
  background: rgba(255, 255, 255, 0.98) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

/* Minimalist Card Hover */
.corporate-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  transition: all 0.3s ease;
}

.corporate-card:hover {
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
  transform: translateY(-2px);
  border-color: #BFDBFE; /* blue-200 */
}

/* Gradient Text for subtle emphasis */
.text-gradient {
  background: linear-gradient(135deg, #1E40AF 0%, #3B82F6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Section Title Underline */
.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 4px;
  background-color: var(--secondary-blue);
  margin-top: 16px;
  border-radius: 2px;
}
.section-title.center::after {
  margin-left: auto;
  margin-right: auto;
}

/* Modal Overlay */
.modal-overlay {
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
}

/* Tab active styling */
.solution-tab.active, .solution-tab-btn.active {
  background: var(--primary-blue);
  color: #FFFFFF;
  border-color: var(--primary-blue);
}

/* Clean Tag Pill */
.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 500;
  background: #F1F5F9;
  color: #475569;
  border: 1px solid #E2E8F0;
}