/* ==========================================
   上海合胜计算机科技股份有限公司 - 企业官网
   Global Stylesheet
   ========================================== */

/* --- CSS Variables --- */
:root {
  --primary: #0A6EFF;
  --primary-dark: #0856CC;
  --primary-light: #3D8BFF;
  --secondary: #00D4AA;
  --secondary-dark: #00A886;
  --accent: #6C5CE7;
  --dark: #0B1426;
  --dark-800: #111B2E;
  --dark-700: #1A2540;
  --dark-600: #243352;
  --gray-100: #F0F4F8;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-400: #94A3B8;
  --gray-500: #64748B;
  --gray-600: #475569;
  --white: #FFFFFF;
  --text-primary: #1E293B;
  --text-secondary: #64748B;
  --gradient-primary: linear-gradient(135deg, #0A6EFF 0%, #6C5CE7 100%);
  --gradient-hero: linear-gradient(135deg, #0B1426 0%, #1A2540 50%, #0A6EFF 100%);
  --gradient-card: linear-gradient(135deg, rgba(10,110,255,0.05) 0%, rgba(108,92,231,0.05) 100%);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --shadow-glow: 0 0 40px rgba(10,110,255,0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

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

ul, ol {
  list-style: none;
}

button {
  border: none;
  outline: none;
  cursor: pointer;
  font-family: inherit;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--dark);
}

h1 { font-size: clamp(2.5rem, 5vw, 3.75rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  color: var(--text-secondary);
  line-height: 1.8;
}

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

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  padding: 10px 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  transition: var(--transition);
}

.navbar.scrolled .nav-logo {
  color: var(--dark);
}

.nav-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 900;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  position: relative;
  padding: 4px 0;
}

.navbar.scrolled .nav-links a {
  color: var(--text-secondary);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
}

.navbar.scrolled .nav-links a:hover,
.navbar.scrolled .nav-links a.active {
  color: var(--primary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
  transition: var(--transition);
}

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

.nav-cta {
  padding: 10px 24px;
  background: var(--primary);
  color: var(--white) !important;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(10, 110, 255, 0.4);
}

.nav-cta::after {
  display: none !important;
}

/* Mobile Menu */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
  background: var(--dark);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(10, 110, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(10, 110, 255, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.3);
}

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

.btn-outline-dark {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline-dark:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

/* --- Section Styles --- */
.section {
  padding: 100px 0;
}

.section-dark {
  background: var(--dark);
  color: var(--white);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--white);
}

.section-dark p {
  color: rgba(255,255,255,0.7);
}

.section-gray {
  background: var(--gray-100);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header .badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(10, 110, 255, 0.1);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-dark .section-header .badge {
  background: rgba(10, 110, 255, 0.2);
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1rem;
}

/* --- Cards --- */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: var(--transition);
  border: 1px solid var(--gray-200);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.card-icon.blue {
  background: rgba(10, 110, 255, 0.1);
  color: var(--primary);
}

.card-icon.green {
  background: rgba(0, 212, 170, 0.1);
  color: var(--secondary);
}

.card-icon.purple {
  background: rgba(108, 92, 231, 0.1);
  color: var(--accent);
}

.card-icon.orange {
  background: rgba(255, 159, 67, 0.1);
  color: #FF9F43;
}

.card-icon.red {
  background: rgba(255, 71, 87, 0.1);
  color: #FF4757;
}

.card-icon.teal {
  background: rgba(0, 210, 211, 0.1);
  color: #00D2D3;
}

.card h3 {
  margin-bottom: 12px;
}

.card p {
  font-size: 0.95rem;
}

/* --- Grid Layouts --- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* --- Hero Common --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(10,110,255,0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(108,92,231,0.1) 0%, transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(0,212,170,0.08) 0%, transparent 50%);
}

/* Animated grid background */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(10,110,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10,110,255,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
}

/* Floating particles */
.particle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.6; }
  50% { transform: translateY(-20px) rotate(180deg); opacity: 1; }
}

/* --- Footer --- */
.footer {
  background: var(--dark);
  color: var(--white);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-brand .logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1rem;
}

.footer-brand p {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  margin-bottom: 20px;
  line-height: 1.8;
}

.footer h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 20px;
  font-weight: 600;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: var(--transition);
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
}

.footer-contact .icon {
  color: var(--primary-light);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-bottom p {
  color: rgba(255,255,255,0.4);
  font-size: 0.85rem;
}

.footer-bottom .links {
  display: flex;
  gap: 24px;
}

.footer-bottom .links a {
  color: rgba(255,255,255,0.4);
  font-size: 0.85rem;
}

.footer-bottom .links a:hover {
  color: var(--white);
}

/* --- Page Header (for inner pages) --- */
.page-header {
  padding: 160px 0 80px;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(10,110,255,0.2) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(108,92,231,0.15) 0%, transparent 50%);
}

.page-header .container {
  position: relative;
  z-index: 1;
}

.page-header h1 {
  color: var(--white);
  margin-bottom: 16px;
}

.page-header p {
  color: rgba(255,255,255,0.7);
  font-size: 1.15rem;
  max-width: 600px;
}

.page-header .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 0.9rem;
}

.page-header .breadcrumb a {
  color: rgba(255,255,255,0.5);
}

.page-header .breadcrumb a:hover {
  color: var(--white);
}

.page-header .breadcrumb span {
  color: rgba(255,255,255,0.3);
}

.page-header .breadcrumb .current {
  color: var(--secondary);
}

/* --- Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in {
  opacity: 0;
  transition: opacity 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
}

/* Stagger animations */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* --- Stat counter --- */
.stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

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

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-number span {
  color: var(--secondary);
}

.stat-label {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(11, 20, 38, 0.98);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 32px;
    z-index: 999;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.85) !important;
  }

  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .stats {
    gap: 24px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .hero {
    min-height: auto;
    padding: 120px 0 80px;
  }

  .page-header {
    padding: 120px 0 60px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .btn {
    padding: 12px 24px;
    font-size: 0.9rem;
  }

  .card {
    padding: 24px;
  }
}
.breadcrumb.fade-up.visible{
  display: none;
}
.logo-container{
  width: 49px;
  overflow: hidden;
}
.logo-img{
  width: 130px;
  height: 48px;
  max-width: unset !important;
}
.logo-txt{
  width: 0;
  flex: 1;
}
/* 角标悬停提示 */
.ref-tooltip {
  position: relative;
  display: inline-flex;
  cursor: help;
  font-weight: 500;
  color: #64748B;
}

.ref-tooltip .ref-tooltip-text {
  visibility: hidden;
  opacity: 0;
  width: 280px;
  background-color: #1f2937;
  color: #fff;
  text-align: left;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  font-weight: normal;
  line-height: 1.5;
  position: absolute;
  z-index: 100;
  bottom: 150%;
  left: 50%;
  transform: translateX(-50%);
  white-space: normal;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  transition: opacity 0.2s;
  pointer-events: none;
}

.ref-tooltip .ref-tooltip-text::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -6px;
  border-width: 6px;
  border-style: solid;
  border-color: #1f2937 transparent transparent transparent;
}

.ref-tooltip:hover .ref-tooltip-text {
  visibility: visible;
  opacity: 1;
}