/* ==========================================================================
   内蒙古研科科技有限公司 官方网站样式表
   Design System: Modern Tech Enterprise & Compliance Architecture
   ========================================================================== */

:root {
  --primary: #0066ff;
  --primary-light: #38bdf8;
  --primary-glow: rgba(0, 102, 255, 0.35);
  --accent: #00d2ff;
  --accent-glow: rgba(0, 210, 255, 0.4);
  --bg-dark: #080c14;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 210, 255, 0.3);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --success: #10b981;
  --warning: #f59e0b;
  
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --container-max: 1240px;
}

/* Reset & Global */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #334155;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-main);
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 10%, #38bdf8 55%, #0066ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0, 102, 255, 0.12);
  border: 1px solid rgba(0, 210, 255, 0.25);
  border-radius: var(--radius-full);
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.35rem;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

/* Background Canvas & Effects */
#canvas-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.65;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.25;
}
.glow-orb-1 {
  width: 500px;
  height: 500px;
  background: #0066ff;
  top: -100px;
  left: -100px;
}
.glow-orb-2 {
  width: 600px;
  height: 600px;
  background: #00d2ff;
  top: 30%;
  right: -200px;
}
.glow-orb-3 {
  width: 450px;
  height: 450px;
  background: #6366f1;
  bottom: 10%;
  left: 10%;
}

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 18px 0;
  transition: var(--transition-smooth);
}

.site-header.scrolled {
  padding: 12px 0;
  background: rgba(8, 12, 20, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
}

.logo-icon {
  width: 40px;
  height: 40px;
  transition: var(--transition-smooth);
}

.brand-logo:hover .logo-icon {
  transform: rotate(5deg) scale(1.05);
}

.logo-text-group {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-smooth);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition-smooth);
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, #0066ff 0%, #00a2ff 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 102, 255, 0.5);
  background: linear-gradient(135deg, #0052cc 0%, #008be6 100%);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-main);
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 180px 0 100px;
  z-index: 1;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-content {
  text-align: center;
  max-width: 920px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(0, 210, 255, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 28px;
  backdrop-filter: blur(12px);
  box-shadow: 0 0 20px rgba(0, 210, 255, 0.15);
}

.hero-badge .pulse-dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 10px #10b981;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
  font-size: 3.6rem;
  line-height: 1.18;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 70px;
}

/* Hero Stats Bar */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
}

.stat-item {
  text-align: center;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -12px;
  top: 15%;
  height: 70%;
  width: 1px;
  background: rgba(255, 255, 255, 0.08);
}

.stat-value {
  font-size: 2.2rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.stat-unit {
  font-size: 1.1rem;
  color: var(--accent);
  font-weight: 600;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Common Section Layout */
.section-padding {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}

/* Services / Business Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  transition: var(--transition-smooth);
  position: relative;
  backdrop-filter: blur(12px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top right, rgba(0, 210, 255, 0.12), transparent 70%);
  opacity: 0;
  transition: var(--transition-smooth);
  pointer-events: none;
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  box-shadow: 0 16px 36px rgba(0, 102, 255, 0.2);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: rgba(0, 102, 255, 0.15);
  border: 1px solid rgba(0, 210, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 22px;
  transition: var(--transition-smooth);
}

.service-card:hover .service-icon-box {
  background: var(--primary);
  color: #ffffff;
  transform: scale(1.08);
}

.service-card-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.service-card-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.service-tag {
  font-size: 0.78rem;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

/* About Section & Transparency Card */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.about-text h3 {
  font-size: 1.85rem;
  margin-bottom: 18px;
}

.about-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-values-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 30px;
}

.value-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.value-icon {
  color: var(--accent);
  margin-top: 2px;
}

.value-title {
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 4px;
}

.value-desc {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Official Enterprise File Card (For ICP/Gov inspection) */
.gov-record-card {
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.9) 0%, rgba(10, 15, 28, 0.95) 100%);
  border: 1px solid rgba(0, 210, 255, 0.3);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 102, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.gov-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 20px;
  margin-bottom: 24px;
}

.gov-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #10b981;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
}

.gov-record-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.gov-record-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  font-size: 0.92rem;
  line-height: 1.5;
}

.gov-record-label {
  color: var(--text-muted);
  width: 130px;
  flex-shrink: 0;
}

.gov-record-value {
  color: #ffffff;
  font-weight: 500;
  text-align: right;
}

.gov-record-value.highlight {
  color: var(--accent);
  font-weight: 600;
}

/* Process Section */
.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}

.process-step {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  position: relative;
  transition: var(--transition-smooth);
}

.process-step:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
}

.step-num {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
}

.step-title {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.step-desc {
  color: var(--text-dim);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* Contact & Message Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-card-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 32px 0;
}

.contact-card-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(0, 102, 255, 0.12);
  border: 1px solid rgba(0, 210, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.contact-detail-title {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.contact-detail-content {
  font-size: 1rem;
  color: var(--text-main);
  font-weight: 500;
}

.form-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(16px);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(8, 12, 20, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: #ffffff;
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(0, 210, 255, 0.2);
  background: rgba(15, 23, 42, 0.9);
}

.form-textarea {
  min-height: 110px;
  resize: vertical;
}

/* Compliance Footer */
.site-footer {
  background: #04070d;
  border-top: 1px solid var(--border-color);
  padding: 70px 0 30px;
  position: relative;
  z-index: 1;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-brand-desc {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-top: 16px;
  max-width: 320px;
}

.footer-col-title {
  font-size: 1.05rem;
  color: #ffffff;
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}

/* Legal & ICP Record Section in Footer */
.footer-compliance-bar {
  padding-top: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.compliance-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.compliance-link {
  color: var(--text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-smooth);
}

.compliance-link:hover {
  color: var(--accent);
  text-decoration: underline;
}

.miit-link {
  font-weight: 500;
  color: #cbd5e1;
}

/* Modal Popup (for Terms/Privacy) */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
  padding: 20px;
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: #0f172a;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 680px;
  max-height: 80vh;
  overflow-y: auto;
  padding: 36px;
  position: relative;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
  transform: translateY(20px);
  transition: var(--transition-smooth);
}

.modal-backdrop.active .modal-dialog {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
}

.modal-close:hover {
  color: #ffffff;
}

.modal-body {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-top: 16px;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(8, 12, 20, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 30px 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-150%);
    transition: var(--transition-smooth);
    opacity: 0;
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
  }

  .mobile-toggle {
    display: block;
  }

  .header-actions .btn {
    display: none;
  }

  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  
  .stat-item:not(:last-child)::after {
    display: none;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .process-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
  }
}