/* --- CSS Variables --- */
:root {
  --primary: #0052FF;
  --primary-light: #4D7CFF;
  --primary-dark: #0039B3;
  --primary-glow: rgba(0, 82, 255, 0.15);
  --primary-glow-strong: rgba(0, 82, 255, 0.35);
  --bg: #FAFAFA;
  --bg-dark: #0F172A;
  --bg-dark-secondary: #1E293B;
  --text-primary: #0F172A;
  --text-secondary: #64748B;
  --text-light: #94A3B8;
  --text-on-dark: #F8FAFC;
  --text-on-dark-muted: #94A3B8;
  --border: #E2E8F0;
  --border-dark: #334155;
  --card: #FFFFFF;
  --card-dark: #1E293B;
  --muted: #F1F5F9;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 25px rgba(0,0,0,0.1);
  --shadow-accent: 0 4px 14px rgba(0,82,255,0.25);
  --shadow-accent-lg: 0 8px 24px rgba(0,82,255,0.35);
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.3s ease-out;
  --font-display: 'Plus Jakarta Sans', 'PingFang SC', 'Microsoft YaHei UI', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'Microsoft YaHei UI', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --max-width: 1200px;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--primary-light);
}

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

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: 3.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2.5rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.125rem; }

p {
  color: var(--text-secondary);
  line-height: 1.7;
}

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

/* --- Section --- */
.section {
  padding: 60px 0;
}

.section-dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

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

.section-dark p {
  color: var(--text-on-dark-muted);
}

.section-muted {
  background: var(--muted);
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header .badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-glow);
  color: var(--primary);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.section-dark .section-header .badge {
  background: rgba(77, 124, 255, 0.15);
  color: var(--primary-light);
}

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

.section-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.125rem;
}

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 82, 255, 0.2);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: #ffffff;
  text-decoration: none;
}

.navbar-logo:hover {
  color: #ffffff;
}

.navbar-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  font-weight: 800;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.navbar-links a {
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: #cbd5e1;
  transition: var(--transition);
}

.navbar-links a:hover,
.navbar-links a.active {
  color: #60a5fa;
  background: rgba(0, 82, 255, 0.15);
}

.navbar-cta {
  padding: 10px 24px !important;
  background: linear-gradient(135deg, var(--primary), var(--primary-light)) !important;
  color: white !important;
  border-radius: 8px !important;
  font-weight: 600 !important;
  box-shadow: var(--shadow-accent);
}

.navbar-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent-lg) !important;
  color: white !important;
}

/* Mobile menu */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.navbar-toggle span {
  width: 22px;
  height: 2px;
  background: #cbd5e1;
  border-radius: 2px;
  transition: var(--transition);
}

/* --- Hero Section --- */
.hero {
  padding: 160px 0 100px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0a1628 0%, #1a2d4a 50%, #0f2847 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

/* 科技网格背景 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 82, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 82, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(50px, 50px); }
}

/* 光晕效果 */
.hero::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 82, 255, 0.15) 0%, rgba(0, 82, 255, 0.05) 40%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
}

/* 科技粒子效果 */
.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: #60a5fa;
  border-radius: 50%;
  opacity: 0.6;
  animation: particleFloat 15s linear infinite;
}

.particle-1 {
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.particle-2 {
  top: 60%;
  left: 20%;
  animation-delay: 3s;
  width: 3px;
  height: 3px;
}

.particle-3 {
  top: 40%;
  right: 15%;
  animation-delay: 6s;
  width: 5px;
  height: 5px;
}

.particle-4 {
  bottom: 30%;
  left: 30%;
  animation-delay: 9s;
}

.particle-5 {
  top: 80%;
  right: 25%;
  animation-delay: 12s;
  width: 3px;
  height: 3px;
}

@keyframes particleFloat {
  0% {
    transform: translateY(0) translateX(0);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    transform: translateY(-100vh) translateX(50px);
    opacity: 0;
  }
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(0, 82, 255, 0.2);
  color: #60a5fa;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 24px;
  font-family: var(--font-mono);
  border: 1px solid rgba(0, 82, 255, 0.3);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: #60a5fa;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.3); }
}

.hero h1 {
  margin-bottom: 24px;
  font-size: 3.75rem;
  color: #ffffff;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, #60a5fa, #93c5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.1875rem;
  margin-bottom: 40px;
  max-width: 520px;
  color: #cbd5e1;
}

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

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent-lg);
  color: white;
}

.btn-secondary {
  background: var(--card);
  color: var(--text-primary);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

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

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 14px 16px;
}

.btn-ghost:hover {
  color: var(--primary);
  background: var(--primary-glow);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.0625rem;
}

/* --- Cards --- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 82, 255, 0.2);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-glow);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.25rem;
  color: var(--primary);
}

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

.card p {
  font-size: 0.9375rem;
}

/* Dark card */
.card-dark {
  background: var(--card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.card-dark:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  border-color: rgba(77, 124, 255, 0.3);
}

.card-dark .card-icon {
  background: rgba(77, 124, 255, 0.15);
  color: var(--primary-light);
}

.card-dark h3 {
  color: var(--text-on-dark);
}

.card-dark p {
  color: var(--text-on-dark-muted);
}

/* --- Feature Grid --- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

/* --- Client Logos --- */
.client-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.client-logo {
  padding: 16px 32px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.client-logo:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow-accent);
}

/* --- Stats --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

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

.stat-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.9375rem;
  color: var(--text-on-dark-muted);
}

/* --- Process / Flow --- */
.process-flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  position: relative;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step-number {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
  margin: 0 auto 16px;
}

.process-step h4 {
  margin-bottom: 8px;
  color: var(--text-on-dark);
}

.process-step p {
  font-size: 0.875rem;
  color: var(--text-on-dark-muted);
}

/* --- CTA Section --- */
.cta-section {
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, var(--primary-glow) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section h2 {
  margin-bottom: 16px;
  position: relative;
}

.cta-section p {
  max-width: 500px;
  margin: 0 auto 40px;
  font-size: 1.125rem;
  position: relative;
}

.cta-section .btn {
  position: relative;
}

/* --- Footer --- */
.footer {
  background: var(--bg-dark);
  color: var(--text-on-dark-muted);
  padding: 64px 0 32px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand h3 {
  color: var(--text-on-dark);
  margin-bottom: 16px;
  font-size: 1.25rem;
}

.footer-brand p {
  font-size: 0.9375rem;
  max-width: 300px;
}

.footer-col h4 {
  color: var(--text-on-dark);
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  color: var(--text-on-dark-muted);
  font-size: 0.9375rem;
  transition: var(--transition);
}

.footer-col ul a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
}

/* --- Page Header (for sub pages) --- */
.page-header {
  padding: 120px 0 60px;
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 82, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

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

.page-header p {
  color: var(--text-on-dark-muted);
  font-size: 1.1875rem;
  max-width: 600px;
}

/* --- Feature Detail (Product Page) --- */
.feature-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 40px 0;
}

.feature-detail.reverse {
  direction: rtl;
}

.feature-detail.reverse > * {
  direction: ltr;
}

.feature-detail-content h3 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-detail-content p {
  font-size: 1.0625rem;
  margin-bottom: 24px;
}

.feature-detail-visual {
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 360px;
  border: 1px solid var(--border);
}

/* --- Contact Info --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info-list {
  list-style: none;
}

.contact-info-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.contact-info-list li:last-child {
  border-bottom: none;
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-glow);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-info-text h4 {
  margin-bottom: 4px;
}

.contact-info-text p {
  font-size: 0.9375rem;
}

/* Contact Form */
.contact-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-form h3 {
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9375rem;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-primary);
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* --- About Page --- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-intro-content h2 {
  margin-bottom: 16px;
}

.about-intro-content p {
  font-size: 1.0625rem;
  margin-bottom: 16px;
}

.about-visual {
  background: linear-gradient(135deg, var(--primary-glow), rgba(77, 124, 255, 0.08));
  border-radius: var(--radius-xl);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  border: 1px solid rgba(0, 82, 255, 0.1);
}

/* --- Timeline --- */
.timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  display: flex;
  gap: 24px;
  padding-bottom: 40px;
  position: relative;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
  z-index: 1;
}

.timeline-content h4 {
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 0.9375rem;
}

/* --- Map Placeholder --- */
.map-container {
  width: 100%;
  height: 400px;
  background: var(--muted);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

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

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.5s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.6s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(7) { transition-delay: 0.7s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(8) { transition-delay: 0.8s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(9) { transition-delay: 0.9s; opacity: 1; transform: translateY(0); }

/* --- Hero Graphic Animation --- */
.hero-visual-box {
  width: 100%;
  aspect-ratio: 1;
  max-width: 480px;
  position: relative;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 50%;
  backdrop-filter: blur(10px);
}

.hero-ring {
  position: absolute;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  animation: rotate 60s linear infinite;
}

.hero-ring-1 {
  inset: 0;
}

.hero-ring-2 {
  inset: 40px;
  border-color: rgba(255, 255, 255, 0.15);
  animation-direction: reverse;
  animation-duration: 45s;
}

.hero-ring-3 {
  inset: 80px;
  border-color: rgba(255, 255, 255, 0.1);
  animation-duration: 30s;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-center-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
  border-radius: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #3b82f6;
  font-size: 3rem;
  box-shadow: 0 8px 32px rgba(199, 210, 254, 0.4);
}

.hero-float-card {
  position: absolute;
  background: rgba(226, 232, 240, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
  font-weight: 500;
  animation: float 5s ease-in-out infinite;
  color: #1e293b;
  backdrop-filter: blur(10px);
}

.hero-float-card .icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.hero-float-1 {
  top: 15%;
  right: -10%;
  animation-delay: 0s;
}

.hero-float-1 .icon {
  background: #bfdbfe;
  color: #1e40af;
}

.hero-float-2 {
  bottom: 20%;
  left: -5%;
  animation-delay: 1.5s;
}

.hero-float-2 .icon {
  background: #bbf7d0;
  color: #15803d;
}

.hero-float-3 {
  bottom: 5%;
  right: 10%;
  animation-delay: 3s;
}

.hero-float-3 .icon {
  background: #fed7aa;
  color: #c2410c;
}

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

/* --- Product Feature Visual --- */
.feature-visual-inner {
  text-align: center;
}

.feature-visual-inner .icon-large {
  font-size: 4rem;
  margin-bottom: 16px;
  display: block;
}

.feature-visual-inner h4 {
  color: var(--text-secondary);
  font-weight: 500;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  h1 { font-size: 2.75rem; }
  h2 { font-size: 2rem; }

  .hero {
    min-height: auto;
    padding: 140px 0 80px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-desc {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

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

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

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

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

  .feature-detail {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .feature-detail.reverse {
    direction: ltr;
  }

  .about-intro {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }

  .section { padding: 48px 0; }

  .navbar-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(10, 22, 40, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid rgba(0, 82, 255, 0.2);
    gap: 4px;
  }

  .navbar-links.open {
    display: flex;
  }

  .navbar-links a {
    padding: 12px 20px;
    width: 100%;
  }

  .navbar-toggle {
    display: flex;
  }

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

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

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

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-visual-box {
    max-width: 320px;
  }

  .hero-float-card {
    display: none;
  }

  .client-logos {
    gap: 16px;
  }

  .client-logo {
    padding: 12px 20px;
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 1.875rem; }
  h2 { font-size: 1.5rem; }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

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