/* ============================================
   云茨智能 - Premium Website Styles
   ============================================ */

:root {
  --primary: #0a6e8a;
  --primary-dark: #064663;
  --primary-light: #0e8cae;
  --secondary: #00b4d8;
  --accent: #48cae4;
  --accent-glow: rgba(0, 180, 216, 0.15);
  --gradient-1: linear-gradient(135deg, #064663 0%, #0a6e8a 50%, #0e8cae 100%);
  --gradient-2: linear-gradient(135deg, #0a6e8a 0%, #00b4d8 100%);
  --gradient-3: linear-gradient(135deg, #0e8cae 0%, #48cae4 100%);
  --gradient-hero: linear-gradient(160deg, #050d1a 0%, #0a1628 30%, #0d1f3a 60%, #0a1628 100%);
  --gradient-glow: radial-gradient(ellipse at 20% 50%, rgba(0,180,216,0.08) 0%, transparent 60%);
  --dark: #0a1628;
  --dark-2: #111d33;
  --dark-3: #182845;
  --text: #f4f8ff;
  --text-muted: #b7c7dd;
  --text-muted-2: #93a8c6;
  --text-dark: #253248;
  --border: rgba(255,255,255,0.08);
  --border-glow: rgba(0, 180, 216, 0.15);
  --card-bg: rgba(255,255,255,0.03);
  --card-hover: rgba(255,255,255,0.06);
  --shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
  --shadow-glow: 0 8px 32px rgba(0, 180, 216, 0.12);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--dark);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

.upload-rounded {
  border-radius: 12px !important;
  width: 100%;
  display: block;
}

ul { list-style: none; }

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

/* ============ PRELOADER ============ */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--dark);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s, visibility 0.6s;
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.preloader-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

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

.navbar.scrolled {
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

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

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.navbar-brand img {
  height: 42px;
  filter: brightness(0) invert(1);
  transition: transform var(--transition);
}

.navbar-brand:hover img {
  transform: scale(1.05);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.navbar-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  position: relative;
  padding: 4px 0;
  letter-spacing: 0.3px;
  transition: color var(--transition);
}

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

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

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

.navbar-cta {
  background: var(--gradient-2);
  color: #fff !important;
  padding: 10px 24px !important;
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.85rem !important;
  transition: all var(--transition) !important;
  box-shadow: 0 4px 15px rgba(0, 180, 216, 0.3);
}

.navbar-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 180, 216, 0.4);
}

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

/* Hamburger */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.navbar-toggle span {
  width: 28px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

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

/* Platform Dropdown */
.platform-dropdown {
  position: relative;
}

.platform-dropdown-btn {
  background: linear-gradient(135deg, rgba(0, 180, 216, 0.2) 0%, rgba(10, 110, 138, 0.65) 100%);
  border: 1px solid rgba(72, 202, 228, 0.4);
  color: #fff;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  padding: 10px 16px;
  border-radius: 999px;
  font-family: inherit;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 6px 20px rgba(0, 180, 216, 0.2);
  transition: all var(--transition);
}

.platform-dropdown-btn::after {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  margin-top: -2px;
  transition: transform var(--transition);
}

.platform-dropdown-btn:focus-visible {
  outline: 2px solid rgba(72, 202, 228, 0.65);
  outline-offset: 2px;
}

.platform-dropdown:hover .platform-dropdown-btn {
  color: #fff;
  transform: translateY(-2px);
  border-color: rgba(72, 202, 228, 0.65);
  box-shadow: 0 10px 28px rgba(0, 180, 216, 0.32);
}

.platform-dropdown:hover .platform-dropdown-btn::after { transform: rotate(225deg); margin-top: 2px; }

.platform-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--dark-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  box-shadow: var(--shadow);
}

.platform-dropdown:hover .platform-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(4px);
}

.platform-dropdown-menu a {
  display: block;
  padding: 10px 16px;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: all var(--transition);
}

.platform-dropdown-menu a:hover {
  background: var(--card-bg);
  color: var(--text);
}

/* ============ HERO - FULLSCREEN BANNER CAROUSEL ============ */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: var(--dark);
}

/* === Banner Slides === */
.hero-slides {
  position: relative;
  width: 100%;
  height: 100%;
}

.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1s ease, visibility 1s ease;
  z-index: 0;
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 1;
}

.hero-slide-link {
  display: block;
  width: 100%;
  height: 100%;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

/* Slide Background */
.hero-slide-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-slide-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  transition: transform 8s ease;
}

.hero-slide.active .hero-slide-bg img {
  transform: scale(1);
}

.hero-slide-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg,
    rgba(5,13,26,0.25) 0%,
    rgba(10,22,40,0.15) 40%,
    rgba(5,13,26,0.20) 100%
  );
}

.hero-slide-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
    rgba(0,180,216,0.02) 0%,
    transparent 50%,
    rgba(0,180,216,0.01) 100%
  );
}

/* Grid overlay on each slide */
.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0,180,216,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,180,216,0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at 50% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, black 20%, transparent 70%);
}

/* Scan line */
.hero-scanline {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(0,180,216,0.08), transparent);
  animation: scanline 8s linear infinite;
}

@keyframes scanline {
  0% { top: -1px; }
  100% { top: 100%; }
}

/* Slide number indicator */
.hero-slide-number {
  position: absolute;
  top: 50%;
  right: 60px;
  transform: translateY(-50%);
  z-index: 2;
  font-size: 7rem;
  font-weight: 900;
  color: rgba(255,255,255,0.02);
  line-height: 1;
  pointer-events: none;
  letter-spacing: -4px;
}

/* Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 180, 216, 0.08);
  border: 1px solid rgba(0, 180, 216, 0.15);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 28px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
}

.hero-badge::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(0,180,216,0.1), transparent);
  animation: badge-shimmer 3s ease-in-out infinite;
}

@keyframes badge-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
  position: relative;
  z-index: 1;
}

.hero-badge span:last-child {
  position: relative;
  z-index: 1;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0,180,216,0.4); }
  50% { opacity: 0.6; box-shadow: 0 0 8px 4px rgba(0,180,216,0.1); }
}

/* Title */
.hero-title {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.12;
  margin-bottom: 24px;
  letter-spacing: -2px;
}

.hero-title .highlight {
  background: linear-gradient(135deg, #00b4d8 0%, #48cae4 40%, #90e0ef 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Description */
.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 36px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-2);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 180, 216, 0.3);
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.btn-primary:hover::before {
  transform: translateX(100%);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 180, 216, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.12);
}

.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(0, 180, 216, 0.06);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 180, 216, 0.08);
}

/* === Side Navigtion (bullets with labels) === */
.hero-nav {
  position: absolute;
  right: 32px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.hero-nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  padding: 10px 0;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  transition: all var(--transition);
  position: relative;
}

.hero-nav-item .label {
  font-size: 0.78rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  opacity: 0;
  transform: translateX(10px);
  transition: all var(--transition);
  color: var(--text-muted-2);
  white-space: nowrap;
}

.hero-nav-item:hover .label,
.hero-nav-item.active .label {
  opacity: 1;
  transform: translateX(0);
  color: var(--text);
}

.hero-nav-item .line {
  width: 32px;
  height: 2px;
  background: var(--text-muted-2);
  transition: all var(--transition);
  border-radius: 1px;
}

.hero-nav-item:hover .line,
.hero-nav-item.active .line {
  width: 48px;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(0,180,216,0.3);
}

.hero-nav-item .bullet {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 2px solid var(--text-muted-2);
  transition: all var(--transition);
  flex-shrink: 0;
}

.hero-nav-item:hover .bullet,
.hero-nav-item.active .bullet {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 10px rgba(0,180,216,0.3);
}

/* === Arrows === */
.hero-arrows {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 16px;
}

.hero-arrow {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  backdrop-filter: blur(10px);
}

.hero-arrow:hover {
  background: rgba(0, 180, 216, 0.1);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 20px rgba(0,180,216,0.1);
}

/* === Progress bar === */
.hero-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 10;
  background: rgba(255,255,255,0.05);
}

.hero-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--gradient-2);
  transition: width 0.1s linear;
  box-shadow: 0 0 10px rgba(0,180,216,0.3);
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 52px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted-2);
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  transition: color var(--transition);
}

.hero-scroll-indicator:hover {
  color: var(--text);
}

.hero-scroll-indicator .mouse {
  width: 24px;
  height: 36px;
  border: 2px solid var(--text-muted-2);
  border-radius: 12px;
  position: relative;
  transition: border-color var(--transition);
}

.hero-scroll-indicator:hover .mouse {
  border-color: var(--text);
}

.hero-scroll-indicator .mouse::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  background: var(--text-muted-2);
  border-radius: 2px;
  animation: scroll-wheel 2s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.3; transform: translateX(-50%) translateY(6px); }
}

/* ============ TRUSTED BANNER ============ */
.trusted-bar {
  padding: 60px 0 40px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.trusted-bar p {
  font-size: 0.8rem;
  color: var(--text-muted-2);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.trusted-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
  opacity: 0.4;
}

.trusted-logos span {
  font-size: 1.1rem;
  color: var(--text-muted);
  font-weight: 300;
  letter-spacing: 1px;
  padding: 12px 0;
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.trusted-logos span:hover {
  opacity: 0.8;
  border-bottom-color: var(--accent);
}

/* ============ SECTION COMMON ============ */
.section {
  padding: 120px 0;
  position: relative;
}

.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
  opacity: 0.3;
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-tag {
  display: inline-block;
  background: rgba(0, 180, 216, 0.06);
  border: 1px solid rgba(0, 180, 216, 0.12);
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 20px;
  position: relative;
}

.section-tag::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50px;
  background: linear-gradient(135deg, rgba(0,180,216,0.05), transparent);
}

.section-title {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -1px;
  line-height: 1.2;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ============ FULL-WIDTH STATS COUNTER ============ */
.stats-bar {
  padding: 80px 0;
  position: relative;
  background: linear-gradient(180deg, var(--dark-2) 0%, transparent 100%);
  overflow: hidden;
}

.stats-bar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(0,180,216,0.03) 0%, transparent 60%);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  position: relative;
}

.stats-grid > * {
  background: var(--dark);
  padding: 48px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.stats-grid > *::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-2);
  opacity: 0;
  transition: opacity var(--transition);
  transform: scaleX(0);
}

.stats-grid > *:hover::before {
  opacity: 1;
  transform: scaleX(1);
}

.stats-number {
  font-size: 3.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #00b4d8 0%, #90e0ef 50%, #48cae4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -2px;
  line-height: 1;
  margin-bottom: 8px;
}

.stats-suffix {
  font-size: 1.6rem;
  font-weight: 300;
  -webkit-text-fill-color: var(--accent);
  color: var(--accent);
  opacity: 0.6;
}

.stats-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.stats-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
  opacity: 0.15;
}

/* ============ SERVICES / FEATURES ============ */
.services {
  position: relative;
  overflow: hidden;
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 80% 20%, rgba(0,180,216,0.03) 0%, transparent 50%);
  pointer-events: none;
}

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

.service-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  cursor: default;
  backdrop-filter: blur(5px);
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,180,216,0.08), transparent 40%, transparent 60%, rgba(0,180,216,0.03));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  transition: opacity var(--transition);
  opacity: 0.5;
}

.service-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,180,216,0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover {
  background: rgba(255,255,255,0.04);
  transform: translateY(-10px);
  border-color: rgba(0, 180, 216, 0.2);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4), 0 0 40px rgba(0,180,216,0.03);
}

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

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

.service-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  background: var(--gradient-2);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  transition: all var(--transition);
  position: relative;
  box-shadow: 0 4px 16px rgba(0, 180, 216, 0.15);
}

.service-icon::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 24px;
  background: var(--gradient-2);
  opacity: 0.1;
  z-index: -1;
  transition: all var(--transition);
}

.service-card:hover .service-icon {
  transform: scale(1.1) rotate(-5deg);
  box-shadow: 0 12px 32px rgba(0, 180, 216, 0.25);
}

.service-card:hover .service-icon::after {
  opacity: 0.25;
  transform: scale(1.1);
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 14px;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 280px;
  margin: 0 auto;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 24px;
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
  transition: all var(--transition);
}

.service-link:hover {
  gap: 10px;
  color: #fff;
}

/* ============ PRODUCTS ============ */
.products {
  background: linear-gradient(180deg, var(--dark) 0%, var(--dark-2) 50%, var(--dark) 100%);
  position: relative;
  overflow: hidden;
}

.products::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 70%, rgba(0,180,216,0.02) 0%, transparent 50%);
  pointer-events: none;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
  color: inherit;
  position: relative;
}

.product-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,180,216,0.1), transparent 40%, transparent 60%, rgba(0,180,216,0.03));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.3;
  transition: opacity var(--transition);
}

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

.product-card:hover {
  transform: translateY(-10px);
  border-color: rgba(0, 180, 216, 0.2);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4), 0 0 60px rgba(0,180,216,0.03);
}

.product-image {
  width: 100%;
  height: 240px;
  background: radial-gradient(ellipse at center, var(--dark-3) 0%, #0d1524 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.product-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(0,180,216,0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 1;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 32px;
  transition: transform 0.6s ease;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.3));
}

.product-image img.upload-rounded {
  padding: 0;
  height: 100%;
  object-fit: cover;
  border-radius: 0 !important;
}

.product-card:hover .product-image img {
  transform: scale(1.1);
  filter: drop-shadow(0 12px 32px rgba(0,0,0,0.4));
}

.product-body {
  padding: 28px;
  position: relative;
}

.product-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.product-body .category {
  display: inline-block;
  background: rgba(0, 180, 216, 0.08);
  color: var(--accent);
  font-size: 0.72rem;
  padding: 3px 12px;
  border-radius: 50px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.product-body p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ============ CASES ============ */
.cases-carousel {
  position: relative;
  overflow: hidden;
  padding: 8px 0;
}

.cases-track {
  display: flex;
  gap: 24px;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.cases-track .case-card {
  width: calc(33.33% - 16px);
  min-width: calc(33.33% - 16px);
  flex: 0 0 calc(33.33% - 16px);
}

.case-card {
  min-width: calc(25% - 18px);
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  cursor: default;
  flex-shrink: 0;
  position: relative;
}

.case-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,180,216,0.08), transparent 40%, transparent 60%, rgba(0,180,216,0.02));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.3;
  transition: opacity var(--transition);
}

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

.case-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 180, 216, 0.2);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

.case-image {
  height: 220px;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.case-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,22,40,0.3), transparent 50%);
  z-index: 1;
}

.case-image .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,22,40,0.9) 0%, rgba(10,22,40,0.3) 50%, transparent 100%);
  z-index: 1;
}

.case-body {
  padding: 24px;
  position: relative;
  z-index: 2;
}

.case-card-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.case-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.case-body .case-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.75;
}

.case-body .case-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 500;
  margin-top: 12px;
  transition: gap var(--transition);
}

.case-body .case-arrow:hover {
  gap: 12px;
  color: #fff;
}

.carousel-controls {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
}

.carousel-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
  color: var(--text);
  font-size: 1.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.carousel-btn:hover {
  background: rgba(0, 180, 216, 0.08);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 4px 20px rgba(0, 180, 216, 0.1);
}

/* ============ ADVANTAGES ============ */
.advantages {
  background: linear-gradient(180deg, var(--dark) 0%, var(--dark-2) 100%);
  position: relative;
  overflow: hidden;
}

.advantages::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 30%, rgba(0,180,216,0.03) 0%, transparent 50%);
  pointer-events: none;
}

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

.advantage-item {
  display: flex;
  gap: 24px;
  padding: 32px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.advantage-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--gradient-2);
  transition: height var(--transition);
  border-radius: 0 0 2px 2px;
}

.advantage-item:hover::before {
  height: 100%;
}

.advantage-item:hover {
  background: rgba(255,255,255,0.04);
  border-color: rgba(0, 180, 216, 0.15);
  transform: translateX(8px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}

.advantage-icon {
  width: 56px;
  height: 56px;
  min-width: 56px;
  background: var(--gradient-2);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 4px 12px rgba(0, 180, 216, 0.15);
}

.advantage-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.advantage-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ============ PLATFORM SECTION ============ */
.platform-section {
  background: linear-gradient(180deg, var(--dark) 0%, var(--dark-2) 100%);
  overflow: hidden;
  position: relative;
}

.platform-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,180,216,0.04) 0%, transparent 60%);
  border-radius: 50%;
  pointer-events: none;
}

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

.platform-info .section-title {
  margin-bottom: 20px;
}

.platform-info p {
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 36px;
  font-size: 1.02rem;
}

.platform-features {
  display: grid;
  gap: 16px;
}

.platform-feature {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.platform-feature:hover {
  background: rgba(255,255,255,0.04);
  border-color: rgba(0, 180, 216, 0.15);
  transform: translateX(6px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.platform-feature .check {
  width: 26px;
  height: 26px;
  min-width: 26px;
  background: var(--gradient-2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 180, 216, 0.2);
}

.platform-feature span {
  font-size: 0.92rem;
}

.platform-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.platform-visual::before {
  content: '';
  position: absolute;
  width: 110%;
  height: 110%;
  background: radial-gradient(ellipse, rgba(0,180,216,0.04) 0%, transparent 60%);
  pointer-events: none;
}

.platform-visual img {
  max-width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glow);
  box-shadow: var(--shadow), 0 0 40px rgba(0,180,216,0.04);
  position: relative;
}

/* ============ CONTACT SECTION ============ */
.contact-section {
  background: linear-gradient(180deg, var(--dark-2) 0%, var(--dark) 100%);
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0,180,216,0.03) 0%, transparent 60%);
  border-radius: 50%;
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.contact-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.contact-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,180,216,0.08), transparent 40%, transparent 60%, rgba(0,180,216,0.02));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.3;
}

.contact-card:hover {
  background: rgba(255,255,255,0.04);
  border-color: rgba(0, 180, 216, 0.15);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

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

.contact-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  background: var(--gradient-2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 4px 16px rgba(0, 180, 216, 0.15);
}

.contact-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.contact-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.contact-card a {
  color: var(--accent);
}

.contact-card a:hover {
  text-decoration: underline;
}

/* ============ FOOTER ============ */
.footer {
  background: var(--dark);
  border-top: 1px solid var(--border);
  padding: 40px 0;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,180,216,0.08), transparent);
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.footer-links a {
  font-size: 0.84rem;
  color: var(--text-muted-2);
  transition: color var(--transition);
  letter-spacing: 0.3px;
}

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

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted-2);
}

.footer-beian {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer-beian a {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--text-muted-2);
  transition: color var(--transition);
}

.footer-beian a:hover {
  color: var(--text);
}

.footer-beian img {
  width: 16px;
  height: 16px;
}

/* ============ ANIMATIONS ============ */
[data-aos] {
  opacity: 0;
  transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-aos="fade-up"] { transform: translateY(40px); }
[data-aos="fade-down"] { transform: translateY(-40px); }
[data-aos="fade-left"] { transform: translateX(-40px); }
[data-aos="fade-right"] { transform: translateX(40px); }
[data-aos="fade"] { transform: none; }
[data-aos="zoom-in"] { transform: scale(0.9); }

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger children */
[data-stagger] > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-stagger].aos-animate > *:nth-child(1) { transition-delay: 0s; }
[data-stagger].aos-animate > *:nth-child(2) { transition-delay: 0.1s; }
[data-stagger].aos-animate > *:nth-child(3) { transition-delay: 0.2s; }
[data-stagger].aos-animate > *:nth-child(4) { transition-delay: 0.3s; }
[data-stagger].aos-animate > *:nth-child(5) { transition-delay: 0.4s; }
[data-stagger].aos-animate > *:nth-child(6) { transition-delay: 0.5s; }

[data-stagger].aos-animate > * {
  opacity: 1;
  transform: translateY(0);
}

/* Hover lift effect */
.hover-lift {
  transition: transform var(--transition), box-shadow var(--transition);
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* ============ PAGE HEADER ============ */
.page-header {
  padding: 160px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--dark-2) 0%, var(--dark) 100%);
}

.page-header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 50% 0%, rgba(0, 180, 216, 0.05) 0%, transparent 50%);
  animation: pulse-bg 8s ease-in-out infinite;
}

@keyframes pulse-bg {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 1; }
}

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

.page-header h1 {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 0.85rem;
}

.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--text); }

/* ============ PRODUCTS PAGE ============ */
.products-page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.product-detail-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.product-detail-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 180, 216, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.product-detail-card .product-image {
  height: 280px;
  background: radial-gradient(ellipse at center, var(--dark-3) 0%, #0d1524 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.product-detail-card .product-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(0,180,216,0.03) 0%, transparent 60%);
  pointer-events: none;
}

.product-detail-card .product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 32px;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.3));
  transition: transform var(--transition);
}

.product-detail-card .product-image img.upload-rounded {
  padding: 0;
  height: 100%;
  object-fit: cover;
  border-radius: 0 !important;
}

.product-detail-card:hover .product-image img {
  transform: scale(1.08);
  filter: drop-shadow(0 12px 32px rgba(0,0,0,0.4));
}

.product-detail-card .product-info {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-detail-card .product-info h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.product-detail-card .product-info .desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}

.product-detail-card .product-info .specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.product-detail-card .product-info .specs span {
  background: rgba(0, 180, 216, 0.08);
  border: 1px solid rgba(0, 180, 216, 0.15);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.78rem;
  color: var(--accent);
}

/* ============ CASES PAGE ============ */
.cases-page-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ============ CONTACT PAGE ============ */
.contact-page-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

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

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.contact-info-item:hover {
  background: var(--card-hover);
  border-color: rgba(0, 180, 216, 0.2);
}

.contact-info-item .icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--gradient-2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.contact-info-item h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-info-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.contact-map {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  height: 400px;
  background: var(--dark-3);
}

.contact-map > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============ SCROLL TO TOP ============ */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-2);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
  z-index: 100;
  box-shadow: 0 4px 15px rgba(0, 180, 216, 0.3);
}

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

.scroll-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 180, 216, 0.4);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .hero-nav { display: none; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .case-card { min-width: calc(33.33% - 16px); }
  .cases-track .case-card {
    width: calc(50% - 12px);
    min-width: calc(50% - 12px);
    flex-basis: calc(50% - 12px);
  }
  .platform-content { grid-template-columns: 1fr; gap: 60px; }
  .platform-visual { order: -1; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-page-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .navbar-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(17, 29, 51, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 80px 32px 24px;
    gap: 20px;
    transition: right 0.4s ease;
    border-left: 1px solid var(--border);
    align-items: flex-start;
    overflow-y: auto;
    z-index: 1100;
  }

  .navbar-links.open { right: 0; }
  .navbar-toggle {
    display: flex;
    position: relative;
    z-index: 1101;
  }

  .platform-dropdown {
    width: 100%;
  }

  .platform-dropdown-btn {
    width: 100%;
    justify-content: space-between;
    padding: 12px 14px;
    font-size: 0.9rem;
    border-radius: 12px;
  }

  .platform-dropdown:hover .platform-dropdown-btn {
    transform: none;
  }

  .platform-dropdown:hover .platform-dropdown-btn::after,
  .platform-dropdown:not(.open) .platform-dropdown-btn::after {
    transform: rotate(45deg);
    margin-top: -2px;
  }

  .platform-dropdown-menu {
    position: static;
    top: auto;
    left: auto;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: transparent;
    border: none;
    padding: 8px 0 0 0;
    margin-top: 6px;
    display: none;
    width: 100%;
    min-width: 0;
  }

  .platform-dropdown:hover .platform-dropdown-menu {
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .platform-dropdown.open .platform-dropdown-menu {
    display: block;
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .platform-dropdown.open .platform-dropdown-btn::after {
    transform: rotate(225deg);
    margin-top: 2px;
  }

  .platform-dropdown-menu a {
    padding: 10px 12px;
    margin-top: 4px;
    background: rgba(20, 36, 64, 0.45);
    border: 1px solid rgba(72, 202, 228, 0.22);
    border-radius: 10px;
    color: #d6e6f2;
  }

  .platform-dropdown-menu a:first-child {
    margin-top: 0;
  }

  .platform-dropdown-menu a:hover {
    background: rgba(32, 56, 95, 0.6);
    color: #fff;
  }

  .hero { height: 100vh; min-height: 100vh; }
  .hero-slides,
  .hero-slide,
  .hero-slide-link {
    height: 100%;
    min-height: 100%;
  }

  .section-title { font-size: 1.8rem; }
  .section { padding: 70px 0; }
  .page-header { padding: 120px 0 50px; }
  .page-header h1 { font-size: 2rem; }
  .section-header { margin-bottom: 48px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-number { font-size: 2.4rem; }

  .services-grid,
  .products-grid,
  .products-page-grid { grid-template-columns: 1fr; }
  .case-card { min-width: calc(50% - 12px); }
  .cases-track .case-card {
    width: 100%;
    min-width: 100%;
    flex-basis: 100%;
  }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-page-grid { grid-template-columns: 1fr; }
  .cases-page-grid { grid-template-columns: 1fr; }
  .advantages-grid { grid-template-columns: 1fr; }
  .hero-scroll-indicator { display: none; }

  .trusted-logos { gap: 24px; }
  .trusted-logos span { font-size: 0.9rem; }

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

  .footer-beian {
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .case-card { min-width: 100%; }
  .cases-track .case-card {
    width: 100%;
    min-width: 100%;
    flex-basis: 100%;
  }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: 1fr; }
  .stats-number { font-size: 2rem; }
  .trusted-logos { gap: 16px; }
  .trusted-logos span { font-size: 0.8rem; padding: 8px 12px; }
}

@media (max-width: 640px) {
  .hero-slide-bg {
    background: radial-gradient(ellipse at center, rgba(12, 33, 66, 0.85) 0%, rgba(6, 17, 35, 0.95) 60%, rgba(4, 12, 25, 1) 100%);
  }

  .hero-slide-bg img,
  .hero-slide.active .hero-slide-bg img {
    object-fit: cover;
    object-position: 62% center;
    transform: scale(1.04);
  }

  .hero-slide-overlay {
    background: linear-gradient(180deg, rgba(5, 13, 26, 0.2) 0%, rgba(10, 22, 40, 0.18) 55%, rgba(5, 13, 26, 0.24) 100%);
  }
}

@media (max-width: 420px) {
  .hero-slide-bg img,
  .hero-slide.active .hero-slide-bg img {
    object-position: 66% center;
    transform: scale(1.06);
  }
}