/* ============================================
   山东向量空间AI官网 - Design System & Styles
   Company: 山东向量空间人工智能科技有限公司
   Brand: 向量空间AI / Vector Space AI
   ============================================ */

/* --- Design Tokens --- */
:root {
  /* Primary Colors */
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #60a5fa;
  --primary-50: #eff6ff;

  /* Secondary / Violet */
  --secondary: #7c3aed;
  --secondary-dark: #6d28d9;
  --secondary-light: #a78bfa;
  --secondary-50: #f5f3ff;

  /* Accent / Cyan */
  --accent: #06b6d4;
  --accent-dark: #0891b2;
  --accent-light: #67e8f9;

  /* Gradients — 企业级商务风格，减少AI感 */
  --gradient-primary: linear-gradient(135deg, #1e40af, #2563eb);
  --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  --gradient-card: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 100%);
  --gradient-text: linear-gradient(135deg, #1e3a8a, #3b82f6);

  /* Neutral Colors */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  /* Semantic Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;

  /* Typography */
  --font-sans: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: "Space Grotesk", "Inter", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;

  /* Font Sizes (fluid) */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --container-max: 1280px;
  --container-wide: 1440px;
  --nav-height: 80px;
  --section-padding: 100px;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --border-radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.25);
  --shadow-glow: 0 0 40px rgba(37,99,235,0.15);

  /* Z-index scale */
  --z-base: 1;
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-overlay: 30;
  --z-modal: 40;
  --z-toast: 50;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  --transition-spring: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Firefox scrollbar */
  scrollbar-width: thin;
  scrollbar-color: rgba(37, 99, 235, 0.4) transparent;
}

/* --- Custom Scrollbar (WebKit: Chrome, Edge, Safari) --- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(37, 99, 235, 0.3);
  border-radius: 9999px;
  border: 2px solid transparent;
  background-clip: padding-box;
  transition: background-color var(--transition-slow), box-shadow var(--transition-slow);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(37, 99, 235, 0.55);
  box-shadow: 0 0 6px rgba(37, 99, 235, 0.25);
}

::-webkit-scrollbar-thumb:active {
  background: rgba(37, 99, 235, 0.7);
  box-shadow: 0 0 10px rgba(37, 99, 235, 0.35);
}

/* Scrollbar on dark sections (inherit dark background) */
.dark-section::-webkit-scrollbar-thumb,
.section-dark::-webkit-scrollbar-thumb {
  background: rgba(96, 165, 250, 0.3);
}

.dark-section::-webkit-scrollbar-thumb:hover,
.section-dark::-webkit-scrollbar-thumb:hover {
  background: rgba(96, 165, 250, 0.55);
  box-shadow: 0 0 6px rgba(96, 165, 250, 0.25);
}

/* Overflow containers: nav dropdowns, mobile menu, etc. */
.nav-dropdown::-webkit-scrollbar,
.mega-dropdown-content::-webkit-scrollbar,
.mobile-nav-menu::-webkit-scrollbar {
  width: 4px;
}

.nav-dropdown::-webkit-scrollbar-thumb,
.mega-dropdown-content::-webkit-scrollbar-thumb,
.mobile-nav-menu::-webkit-scrollbar-thumb {
  background: rgba(37, 99, 235, 0.25);
  border-radius: 9999px;
}

.nav-dropdown::-webkit-scrollbar-thumb:hover,
.mega-dropdown-content::-webkit-scrollbar-thumb:hover,
.mobile-nav-menu::-webkit-scrollbar-thumb:hover {
  background: rgba(37, 99, 235, 0.5);
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--gray-800);
  background-color: #fff;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--section-padding) 0;
}

.section-alt {
  padding: var(--section-padding) 0;
  background: var(--gray-50);
}

.section-dark {
  padding: var(--section-padding) 0;
  background: var(--gray-900);
  color: #fff;
}

.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* --- Section Header --- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.section-tag {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--gray-500);
  line-height: 1.7;
}

.section-dark .section-title {
  color: #fff;
}

.section-dark .section-subtitle {
  color: var(--gray-400);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.nav.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: #fff;
  transition: color var(--transition-base);
}

.nav.scrolled .nav-logo {
  color: var(--gray-900);
}

/* 首页 hero 区域内：半透明深色背景 */
.nav-hero {
  background: rgba(15, 23, 42, 0.35) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: var(--text-lg);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-base);
  cursor: pointer;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

.nav-link.active {
  color: var(--primary-light);
}

/* Scrolled state: switch to dark text */
.nav.scrolled .nav-link {
  color: var(--gray-600);
}

.nav.scrolled .nav-link:hover {
  color: var(--gray-900);
  background: var(--gray-100);
}

.nav.scrolled .nav-link.active {
  color: var(--primary);
}

.nav-dropdown-icon {
  width: 16px;
  height: 16px;
  color: rgba(255,255,255,0.6);
  transition: transform var(--transition-base);
}

.nav.scrolled .nav-dropdown-icon {
  color: var(--gray-400);
}

.nav-item:hover .nav-dropdown-icon {
  transform: rotate(180deg);
}

.nav-item.active .nav-dropdown-icon {
  transform: rotate(180deg);
}

.nav-phone {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-right: var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  transition: color var(--transition-base);
}

.nav-phone svg {
  width: 16px;
  height: 16px;
}

.nav.scrolled .nav-phone {
  color: var(--gray-600);
}

/* Dropdown — wider, with icon + text layout */
/* Default: dark glass style (over hero), scrolled: white */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 360px;
  max-height: calc(100vh * 2 / 3);
  overflow-y: auto;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-xl);
  padding: var(--space-3);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Scrolled state: white dropdown */
.nav.scrolled .nav-dropdown {
  background: #fff;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-xl);
}

/* Product mega dropdown — 2-column layout */
.nav-item:has(.dropdown-columns) .nav-dropdown {
  min-width: 640px;
  max-height: calc(100vh * 2 / 3);
  overflow-y: auto;
}

.dropdown-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.dropdown-link {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.dropdown-link:hover {
  background: var(--primary-50);
}

.dropdown-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  color: var(--gray-500);
  flex-shrink: 0;
}

.dropdown-link:hover .dropdown-icon {
  background: var(--primary);
  color: #fff;
}

.dropdown-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.dropdown-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-800);
}

.dropdown-desc {
  font-size: var(--text-xs);
  color: var(--gray-500);
  line-height: 1.5;
}

/* CTA Button in Nav — transparent on dark hero, solid when scrolled */
.nav-cta-item {
  list-style: none;
  display: flex;
  align-items: center;
}

.nav-cta {
  margin-left: var(--space-4);
}

.nav-cta .btn-primary {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.4);
  box-shadow: none;
}

.nav-cta .btn-primary:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
  transform: none;
}

.nav.scrolled .nav-cta .btn-primary {
  background: var(--primary-50);
  color: var(--primary);
  border-color: var(--primary-50);
  box-shadow: 0 1px 2px rgba(37,99,235,0.12);
}

.nav.scrolled .nav-cta .btn-primary:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(37,99,235,0.25);
  transform: translateY(-1px);
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav.scrolled .nav-toggle span {
  background: var(--gray-700);
}

.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);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
  line-height: 1.5;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 1px 2px rgba(37,99,235,0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(37,99,235,0.3);
  transform: translateY(-1px);
}

.btn-secondary {
  background: #fff;
  color: var(--gray-800);
  border: 1px solid var(--gray-200);
}

.btn-secondary:hover {
  border-color: var(--gray-300);
  background: var(--gray-50);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--gray-600);
}

.btn-ghost:hover {
  background: var(--gray-100);
  color: var(--gray-900);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--border-radius);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--border-radius-sm);
}

.btn-white {
  background: #fff;
  color: var(--primary);
}

.btn-white:hover {
  background: var(--gray-100);
  transform: translateY(-1px);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-image: url('https://assets.vdata.chat/jboltai/vecspc/hero_bg_index.webp');
  background-size: cover;
  background-position: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: var(--space-2) var(--space-5);
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--space-6);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.15;
  color: #fff;
  margin-bottom: var(--space-6);
}

.hero-description {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.8;
  margin-bottom: var(--space-8);
  max-width: 560px;
  border-left: 2px solid rgba(255, 255, 255, 0.2);
  padding-left: var(--space-5);
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-actions .btn-lg {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: var(--border-radius-full);
  min-width: 140px;
  transition: all 0.25s ease;
}

.hero-actions .btn-white {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(4px);
}

.hero-actions .btn-white:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.85);
  transform: translateY(-1px);
}

.hero-actions .btn-outline {
  background: transparent;
  color: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.hero-actions .btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.65);
  color: #fff;
  transform: translateY(-1px);
}

.hero-stats {
  display: flex;
  gap: var(--space-12);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stat-value {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: #fff;
}

.hero-stat-label {
  font-size: var(--text-sm);
  color: var(--gray-400);
  margin-top: var(--space-1);
}

/* Hero Visual */
.hero-visual {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual-inner {
  width: 100%;
  max-width: 520px;
  aspect-ratio: 1;
  position: relative;
}

/* Hero background effects */
.hero-bg-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.3;
  pointer-events: none;
}

.hero-bg-glow-1 {
  top: -200px;
  right: -100px;
  background: var(--primary);
}

.hero-bg-glow-2 {
  bottom: -200px;
  left: -100px;
  background: var(--primary-dark);
}

/* Floating particles */
.hero-particle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

/* --- Core Solutions Section --- */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.solution-card {
  position: relative;
  padding: var(--space-8);
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

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

.solution-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
}

.solution-icon-blue {
  background: var(--primary-50);
  color: var(--primary);
}

.solution-icon-violet {
  background: var(--primary-50);
  color: var(--primary);
}

.solution-icon-cyan {
  background: rgba(6,182,212,0.1);
  color: var(--accent);
}

.solution-icon-teal {
  background: rgba(13,148,136,0.1);
  color: var(--accent-dark);
}

.solution-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-50);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--border-radius-full);
  margin-bottom: var(--space-4);
}

.solution-card-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-3);
}

.solution-card-desc {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.7;
}

/* Architecture Diagram */
.arch-diagram {
  position: relative;
  margin-top: var(--space-16);
  display: flex;
  justify-content: center;
}

.arch-diagram-inner {
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
}

.arch-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  width: 200px;
}

.arch-center-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: var(--text-sm);
  text-align: center;
  box-shadow: var(--shadow-glow);
}

.arch-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.arch-item {
  padding: var(--space-3) var(--space-6);
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-700);
  text-align: center;
}

.arch-item span {
  display: block;
  font-size: var(--text-xs);
  color: var(--gray-400);
  margin-top: 2px;
}

/* --- Products Section --- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.product-card {
  padding: var(--space-8);
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
}

.product-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.product-card-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  margin-bottom: var(--space-5);
}

.product-card:hover .product-card-icon {
  color: var(--primary);
}

.product-card-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-3);
}

.product-card-desc {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.product-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.product-tag {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  background: var(--gray-100);
  color: var(--gray-600);
  border-radius: var(--border-radius-full);
}

.product-card-arrow {
  position: absolute;
  top: var(--space-8);
  right: var(--space-8);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-300);
  transition: all var(--transition-base);
}

.product-card:hover .product-card-arrow {
  color: var(--primary);
  transform: translate(2px, -2px);
}

/* --- Use Cases / Scenarios --- */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.scenario-card {
  padding: var(--space-8);
  background: var(--gray-900);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all var(--transition-base);
  cursor: pointer;
}

.scenario-card:hover {
  border-color: rgba(37,99,235,0.3);
  background: var(--gray-800);
  transform: translateY(-2px);
}

.scenario-number {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 700;
  color: rgba(255,255,255,0.06);
  margin-bottom: var(--space-2);
}

.scenario-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: #fff;
  margin-bottom: var(--space-3);
}

.scenario-desc {
  font-size: var(--text-sm);
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.scenario-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.scenario-tag {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  background: rgba(255,255,255,0.06);
  color: var(--gray-300);
  border-radius: var(--border-radius-full);
}

/* --- Stats Bar --- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
}

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

.stat-value {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.stat-value span {
  color: var(--primary-dark);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--gray-500);
  margin-top: var(--space-2);
}

/* --- News Section --- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.news-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
}

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

.news-card-body {
  padding: var(--space-6);
}

.news-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.news-date {
  font-size: var(--text-xs);
  color: var(--gray-400);
}

.news-type {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-50);
  padding: 2px var(--space-2);
  border-radius: var(--border-radius-full);
}

.news-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--gray-900);
  line-height: 1.5;
  margin-bottom: var(--space-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-excerpt {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* --- Honors Section --- */
.honors-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.honor-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
}

.honor-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.honor-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-50);
  color: var(--primary);
  flex-shrink: 0;
}

.honor-text {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-800);
}

/* --- Partners Section --- */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
}

.partner-item {
  position: relative;
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: 0.75rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  overflow: hidden;
}

.partner-item:hover {
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.partner-logo-wrap {
  aspect-ratio: 16 / 10;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.partner-logo {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  opacity: 0.9;
  transition: opacity 0.3s ease;
}

.partner-item:hover .partner-logo {
  opacity: 1;
}

.partner-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-500);
}

@media (max-width: 1024px) {
  .partners-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 768px) {
  .partners-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }
  .partner-logo-wrap {
    padding: 1rem;
  }
}

@media (max-width: 480px) {
  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
  }
}

/* --- Core Solutions Pipeline --- */
.pipeline {
  display: flex;
  align-items: stretch;
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.pipeline-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  position: relative;
}

.pipeline-card {
  position: relative;
  z-index: 1;
  flex: 1;
  padding: var(--space-8);
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.pipeline-step:first-child .pipeline-card,
.pipeline-step:last-child .pipeline-card {
  border-radius: var(--border-radius);
}

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

.pipeline-step:hover .pipeline-icon {
  color: var(--primary);
}

.pipeline-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.pipeline-card-top-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.pipeline-icon {
  width: 32px;
  height: 32px;
  color: var(--gray-400);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pipeline-icon-blue,
.pipeline-icon-teal,
.pipeline-icon-violet {
  background: transparent;
  color: var(--gray-400);
}

.pipeline-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--gray-900);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pipeline-tag {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--gray-500);
  background: var(--gray-100);
  padding: 2px var(--space-3);
  border-radius: var(--border-radius-full);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.pipeline-tag-teal,
.pipeline-tag-violet {
  color: var(--gray-500);
  background: var(--gray-100);
}

.pipeline-desc {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.pipeline-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  flex: 1;
}

.pipeline-features li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--gray-600);
  padding-left: 0;
}

.pipeline-features li svg {
  color: var(--gray-400);
  flex-shrink: 0;
}

.pipeline-role {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--gray-500);
  padding-top: var(--space-4);
  border-top: 1px solid var(--gray-100);
  margin-top: auto;
  height: 48px;
}

/* Arrow between steps */
.pipeline-arrow {
  display: none;
}

/* Bottom flow description */
.pipeline-flow-desc {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--gray-200);
  background: transparent;
  border-radius: 0;
}

.pipeline-flow-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: default;
  transition: all var(--transition-base);
}

.pipeline-flow-item:hover .pipeline-flow-dot {
  background: var(--primary);
}

.pipeline-flow-item:hover .pipeline-flow-label {
  color: var(--primary);
}

.pipeline-flow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gray-300);
  flex-shrink: 0;
}

.pipeline-flow-dot-blue,
.pipeline-flow-dot-teal,
.pipeline-flow-dot-violet {
  background: var(--gray-300);
}

.pipeline-flow-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-800);
}

.pipeline-flow-text {
  display: block;
  font-size: var(--text-xs);
  color: var(--gray-500);
}

.pipeline-flow-connector {
  width: 40px;
  height: 1px;
  background: var(--gray-200);
  margin: 0;
  flex-shrink: 0;
}

/* Responsive: Pipeline section */
@media (max-width: 1024px) {
  .pipeline {
    flex-direction: column;
    gap: var(--space-8);
  }

  .pipeline-step:first-child .pipeline-card,
  .pipeline-step:last-child .pipeline-card {
    border-radius: var(--border-radius);
  }

  .pipeline-arrow {
    display: none;
  }

  .pipeline-flow-desc {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-6) 0;
  }

  .pipeline-flow-connector {
    width: 1px;
    height: 24px;
    margin: 0 0 0 4px;
  }

  .pipeline-role {
    font-size: var(--text-xs);
    margin-top: var(--space-3);
  }
}

@media (max-width: 768px) {
  .pipeline-card {
    padding: var(--space-6);
  }

  .pipeline-icon {
    width: 36px;
    height: 36px;
  }

  .pipeline-icon svg {
    width: 20px;
    height: 20px;
  }

  .pipeline-title {
    font-size: var(--text-lg);
  }

  .pipeline-features li {
    font-size: var(--text-xs);
    padding-left: 0;
  }

  .pipeline-flow-item {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  .pipeline-flow-label {
    font-size: var(--text-xs);
  }

  .pipeline-flow-text {
    font-size: var(--text-xs);
  }

  .pipeline-flow-dot {
    width: 6px;
    height: 6px;
  }
}

/* --- Industrial AI Section --- */
.industrial-section {
  padding: var(--section-padding) 0;
  background: #f8fafc;
  position: relative;
}

.industrial-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gray-200), transparent);
}

/* Stats banner */
.industrial-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  padding: var(--space-10) 0;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-12);
}

.industrial-stat {
  text-align: center;
  position: relative;
  padding: 0 var(--space-6);
}

.industrial-stat:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 48px;
  background: var(--gray-200);
}

.industrial-stat-value {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1;
  letter-spacing: -0.02em;
}

.industrial-stat-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--gray-400);
  margin-top: var(--space-3);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* 8 Modules grid */
.industrial-modules {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.industrial-module {
  padding: var(--space-6);
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.industrial-module:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.industrial-module:hover .industrial-module-icon {
  color: var(--primary);
}

.industrial-module-icon {
  width: 40px;
  height: 40px;
  color: var(--gray-400);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.industrial-module-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-2);
}

.industrial-module-desc {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.industrial-module-count {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--gray-500);
  background: var(--gray-100);
  padding: 2px var(--space-3);
  border-radius: var(--border-radius-full);
}

/* CTA */
.industrial-cta {
  text-align: center;
  margin-top: var(--space-12);
}

.industrial-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-10);
  background: var(--primary-50);
  color: var(--primary);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-base);
}

.industrial-cta-btn:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.2);
}

.industrial-cta-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

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

  .industrial-stats {
    grid-template-columns: repeat(2, 1fr);
    padding: var(--space-8) 0;
  }

  .industrial-stat:nth-child(2)::after {
    display: none;
  }
}

@media (max-width: 768px) {
  .industrial-modules {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .industrial-stats {
    grid-template-columns: repeat(2, 1fr);
    padding: var(--space-6) 0;
  }

  .industrial-stat {
    padding: var(--space-4) var(--space-6);
  }

  .industrial-stat:nth-child(2)::after {
    display: none;
  }

  .industrial-stat-value {
    font-size: var(--text-3xl);
  }

  .industrial-stat-label {
    font-size: var(--text-xs);
  }

  .industrial-module {
    padding: var(--space-5);
  }

  .industrial-module-icon {
    width: 40px;
    height: 40px;
  }

  .industrial-module-icon svg {
    width: 20px;
    height: 20px;
  }

  .industrial-module-title {
    font-size: var(--text-sm);
  }

  .industrial-module-desc {
    font-size: var(--text-xs);
  }

  .industrial-module-count {
    font-size: var(--text-xs);
  }

  .industrial-cta {
    margin-top: var(--space-6);
  }

  .industrial-cta-btn {
    padding: var(--space-3) var(--space-8);
    font-size: var(--text-sm);
  }
}

@media (max-width: 480px) {
  .industrial-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- CTA Section --- */
.cta-section {
  padding: var(--space-24) 0;
  background: var(--gray-900);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(37,99,235,0.14) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 80%, rgba(6,182,212,0.08) 0%, transparent 50%);
  z-index: 1;
}

.cta-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 1;
}

.cta-glow-1 {
  width: 520px;
  height: 520px;
  top: -180px;
  right: -120px;
  background: rgba(37,99,235,0.18);
}

.cta-glow-2 {
  width: 420px;
  height: 420px;
  bottom: -140px;
  left: -100px;
  background: rgba(6,182,212,0.1);
}

.cta-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.028) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 1;
  -webkit-mask-image: radial-gradient(ellipse at center, black 25%, transparent 75%);
  mask-image: radial-gradient(ellipse at center, black 25%, transparent 75%);
}

.cta-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.cta-left {
  max-width: 520px;
}

.cta-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--primary-light);
  margin-bottom: var(--space-6);
  padding: var(--space-2) var(--space-4);
  background: rgba(37,99,235,0.1);
  border: 1px solid rgba(37,99,235,0.18);
  border-radius: var(--border-radius-full);
}

.cta-badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary-light);
  box-shadow: 0 0 6px var(--primary-light);
  animation: pulse-dot 2.2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.cta-title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.15;
  margin-bottom: var(--space-5);
}

.cta-desc {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
  margin-bottom: var(--space-8);
}

.cta-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.cta-actions .btn-white {
  background: #fff;
  color: var(--primary-dark);
  border: none;
  box-shadow: 0 4px 18px rgba(37,99,235,0.28);
}

.cta-actions .btn-white:hover {
  background: #f8fafc;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(37,99,235,0.38);
}

.cta-actions .btn-outline {
  background: transparent;
  color: rgba(255,255,255,0.82);
  border: 1px solid rgba(255,255,255,0.22);
  backdrop-filter: blur(4px);
}

.cta-actions .btn-outline:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.45);
  color: #fff;
}

/* Legacy cta-content support (other pages) */
.cta-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.cta-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.cta-stat-card {
  position: relative;
  padding: var(--space-6);
  background: rgba(255,255,255,0.035);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--border-radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  overflow: hidden;
}

.cta-stat-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.14);
  transform: translateY(-3px);
}

.cta-stat-top {
  display: flex;
  align-items: baseline;
  gap: 2px;
  margin-bottom: var(--space-2);
}

.cta-stat-num {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: #fff;
  line-height: 1;
}

.cta-stat-unit {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.45);
}

.cta-stat-label {
  display: block;
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-3);
}

.cta-stat-bar {
  height: 3px;
  border-radius: 2px;
  background: var(--bar-color, var(--primary-light));
  opacity: 0.55;
  width: 36%;
  transition: width 0.5s ease, opacity 0.5s ease;
}

.cta-stat-card:hover .cta-stat-bar {
  width: 72%;
  opacity: 0.9;
}

/* --- Footer --- */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding-top: var(--space-16);
}

/* Footer top bar: brand + QR */
.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-10);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-bottom: var(--space-10);
}

.footer-top-brand {
  max-width: 420px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: #fff;
}

.footer-brand-name {
  font-size: var(--text-lg);
  font-weight: 600;
  color: #fff;
  margin-top: var(--space-4);
  letter-spacing: 0.02em;
}

.footer-top-desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--gray-400);
  margin-top: var(--space-4);
}

.footer-top-follow {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.footer-main {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-10);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.footer-brand-desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

/* Footer contact info */
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--gray-400);
  margin-bottom: var(--space-3);
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  color: var(--gray-500);
  flex-shrink: 0;
}

/* Footer columns */
.footer-column {
  display: flex;
  flex-direction: column;
}

.footer-column-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: #fff;
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

/* Footer sub-groups (uino.com style) */
.footer-sub-group {
  margin-bottom: var(--space-4);
}

.footer-sub-group:last-child {
  margin-bottom: 0;
}

.footer-sub-title {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

/* Footer contact info */
.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

/* Footer QR code */
.footer-qr {
  width: 100px;
  height: 100px;
  background: var(--gray-800);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-3);
}

.footer-qr-placeholder {
  color: var(--gray-500);
  font-size: var(--text-xs);
}

.footer-qr-text {
  font-size: var(--text-sm);
  color: var(--gray-400);
  margin-bottom: var(--space-1);
}

.footer-qr-hint {
  font-size: var(--text-xs);
  color: var(--gray-500);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--gray-400);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer-link:hover {
  color: #fff;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  color: var(--gray-400);
  font-size: var(--text-sm);
  line-height: 1.6;
  padding: var(--space-1) 0;
}

.footer-contact-item svg {
  opacity: 0.5;
}

.footer-link-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gray-500);
  flex-shrink: 0;
}

/* Footer QR / Follow section */
.footer-follow {
  display: flex;
  flex-direction: column;
}

.footer-qr {
  width: 100px;
  height: 100px;
  background: var(--gray-800);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-3);
  color: var(--gray-500);
  font-size: var(--text-xs);
}

.footer-follow-text {
  font-size: var(--text-xs);
  color: var(--gray-500);
}

/* Footer bottom bar */
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6) 0;
  font-size: var(--text-xs);
  color: var(--gray-500);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-4);
}

.footer-bottom-link {
  color: var(--gray-500);
  transition: color var(--transition-fast);
}

.footer-bottom-link:hover {
  color: var(--gray-300);
}

/* --- Floating Action Buttons --- */
.floating-cta {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-6);
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
}

.floating-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  padding-right: var(--space-3);
  background: var(--primary-50);
  color: var(--primary);
  border-radius: var(--border-radius-full);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
}

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

.floating-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.floating-btn-icon-only {
  width: 40px;
  height: 40px;
  padding: 0;
  justify-content: center;
  border-radius: 50%;
}

.scroll-top {
  width: 44px;
  height: 44px;
  padding: 0;
  justify-content: center;
  border-radius: 50%;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
}

.scroll-top svg {
  width: 20px;
  height: 20px;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* --- Accordion --- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.accordion-item {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: all var(--transition-base);
}

.accordion-item:hover {
  border-color: var(--gray-300);
}

.accordion-item.active {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.accordion-header:hover {
  background: var(--gray-50);
}

.accordion-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--gray-800);
}

.accordion-icon {
  width: 24px;
  height: 24px;
  color: var(--gray-400);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.accordion-body-inner {
  padding: 0 var(--space-6) var(--space-6);
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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

.modal {
  background: #fff;
  border-radius: var(--border-radius-lg);
  padding: var(--space-10);
  max-width: 480px;
  width: 90%;
  transform: scale(0.95) translateY(20px);
  transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-3);
}

.modal-desc {
  font-size: var(--text-sm);
  color: var(--gray-500);
  margin-bottom: var(--space-8);
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  color: var(--gray-400);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--gray-100);
  color: var(--gray-700);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes orbit {
  from { transform: rotate(0deg) translateX(200px) rotate(0deg); }
  to { transform: rotate(360deg) translateX(200px) rotate(-360deg); }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-fadeIn {
  animation: fadeIn 0.6s ease forwards;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* Stagger delays */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* Intersection observer reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive: Tablet (max-width: 1024px) --- */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    display: none;
  }

  .solutions-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .scenarios-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }

  .honors-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .partners-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-main {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }

  .footer-top {
    gap: var(--space-8);
  }
}

/* --- Responsive: Mobile (max-width: 768px) --- */
@media (max-width: 768px) {
  :root {
    --section-padding: 60px;
    --nav-height: 68px;
  }

  .container {
    padding: 0 var(--space-4);
  }

  /* Mobile Nav */
  .nav-menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    height: calc(100vh - var(--nav-height));
    background: #fff;
    flex-direction: column;
    padding: var(--space-6);
    overflow-y: auto;
    z-index: var(--z-sticky);
  }

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

  .nav-toggle {
    display: flex;
  }

  .nav-dropdown {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    background: var(--gray-50);
    border-radius: var(--border-radius-sm);
    padding: var(--space-2) var(--space-4);
    margin-top: var(--space-1);
    display: none;
  }

  .nav-item.active .nav-dropdown {
    display: block;
  }

  .nav-dropdown .dropdown-link {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    gap: var(--space-2) !important;
    padding: var(--space-3) var(--space-4) !important;
    width: 100% !important;
  }

  .nav-dropdown .dropdown-text {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    width: 100%;
  }

  .dropdown-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--gray-900);
  }

  .dropdown-desc {
    font-size: var(--text-xs);
    color: var(--gray-500);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .dropdown-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
  }

  .nav-item:has(.dropdown-columns) .nav-dropdown {
    min-width: 300px;
  }

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

  .nav-link {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    width: 100%;
    justify-content: space-between;
    color: var(--gray-700);
  }

  .nav-link:hover {
    color: var(--gray-900);
    background: var(--gray-100);
  }

  .nav-link.active {
    color: var(--primary);
  }

  .nav-dropdown-icon {
    color: var(--gray-400);
  }

  .nav-item.active .nav-dropdown-icon {
    color: var(--primary);
  }

  .dropdown-link:hover {
    background: var(--primary-50, rgba(37, 99, 235, 0.08));
  }

  /* Hide CTA in compact top navbar on mobile (it lives in .nav-menu on desktop) */
  .nav-inner > .nav-cta {
    display: none;
  }

  /* CTA inside the mobile menu overlay */
  .nav-cta-item {
    margin-top: var(--space-4);
    width: 100%;
  }

  .nav-menu .nav-cta {
    display: block;
    margin-left: 0;
    width: 100%;
  }

  .nav-menu .nav-cta .btn {
    width: 100%;
  }

  /* Hero */
  .hero-title {
    font-size: clamp(2rem, 8vw, 2.75rem);
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: var(--space-8);
  }

  /* Grids */
  .solutions-grid,
  .products-grid,
  .scenarios-grid,
  .news-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Footer */
  .footer-main {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }

  .footer-column-title {
    font-size: var(--text-sm);
  }

  .footer-link {
    font-size: var(--text-xs);
  }

  .footer-sub-title {
    font-size: var(--text-xs);
  }

  .footer-qr-text {
    font-size: var(--text-xs);
  }

  /* News page */
  .news-list-item {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .news-arrow-col {
    display: none;
  }

  .news-meta-col {
    flex-direction: row;
    gap: var(--space-2);
  }

  .news-content-col h3 {
    font-size: var(--text-sm);
  }

  .news-content-col p {
    font-size: var(--text-xs);
  }

  .news-tabs {
    gap: var(--space-2);
    margin-bottom: var(--space-4);
  }

  .news-tab {
    padding: 0.375rem 1rem;
    font-size: var(--text-xs);
  }

  /* CTA */
  .cta-grid {
    grid-template-columns: 1fr;
    gap: var(--space-12);
    text-align: center;
  }

  .cta-left {
    max-width: 100%;
  }

  .cta-actions {
    justify-content: center;
  }

  .cta-stats-grid {
    max-width: 480px;
    margin: 0 auto;
  }

  .section-title {
    font-size: var(--text-3xl);
  }

  .section-subtitle {
    font-size: var(--text-sm);
  }

  .section-tag {
    font-size: var(--text-xs);
  }

  .section-header {
    margin-bottom: var(--space-10);
  }

  /* Product card mobile */
  .product-card-title {
    font-size: var(--text-base);
  }

  .product-card-desc {
    font-size: var(--text-xs);
  }

  .product-tag {
    font-size: var(--text-xs);
    padding: 2px 6px;
  }

  .product-card-arrow {
    top: var(--space-3);
    right: var(--space-3);
  }

  .product-card-arrow svg {
    width: 16px;
    height: 16px;
  }

  /* News card mobile */
  .news-card-body {
    padding: var(--space-5);
  }

  .news-title {
    font-size: var(--text-base);
  }

  .news-excerpt {
    font-size: var(--text-xs);
  }

  .news-date {
    font-size: var(--text-xs);
  }

  .news-type {
    font-size: var(--text-xs);
    padding: 2px 6px;
  }

  .footer-follow {
    display: none;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }

  /* Nav phone hidden on mobile */
  .nav-phone {
    display: none;
  }

  /* Floating buttons mobile */
  .floating-cta {
    bottom: var(--space-4);
    right: var(--space-4);
  }

  .floating-btn-text {
    display: none;
  }

  .floating-btn {
    width: 44px;
    height: 44px;
    padding: 0;
    justify-content: center;
    border-radius: 50%;
  }

  /* CTA */
  .cta-grid {
    gap: var(--space-10);
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }

  .cta-title {
    font-size: var(--text-3xl);
  }

  .cta-desc {
    font-size: var(--text-base);
  }

  .cta-stat-card {
    padding: var(--space-5);
  }

  .cta-stat-num {
    font-size: var(--text-2xl);
  }

  .section-title {
    font-size: var(--text-3xl);
  }

  /* Architecture Diagram - Mobile */
  .arch-diagram-inner {
    flex-direction: column;
    gap: var(--space-8);
  }

  .arch-center {
    width: 100%;
  }

  .arch-center-circle {
    width: 90px;
    height: 90px;
    font-size: var(--text-xs);
  }

  .arch-items {
    width: 100%;
    align-items: center;
  }
}

/* --- Responsive: Small Mobile (max-width: 480px) --- */
@media (max-width: 480px) {
  :root {
    --section-padding: 48px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .stats-bar {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .stat-value {
    font-size: var(--text-3xl);
  }

  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  .solutions-grid,
  .products-grid,
  .scenarios-grid,
  .news-grid {
    gap: var(--space-6);
  }

  .section-header {
    margin-bottom: var(--space-10);
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-top {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer-top-brand {
    max-width: 100%;
  }

  .product-card {
    padding: var(--space-6);
  }

  .solution-card {
    padding: var(--space-6);
  }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
    scrollbar-color: rgba(37, 99, 235, 0.4) transparent;
  }

  ::-webkit-scrollbar-thumb {
    transition: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* --- Focus Styles (Accessibility) --- */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}