/* ═══════════════════════════════════════
   CSS RESET & BASE
═══════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-primary:    #030712;
  --bg-secondary:  #060d1f;
  --bg-card:       rgba(255,255,255,0.03);
  --border:        rgba(255,255,255,0.07);
  --border-glow:   rgba(0,180,255,0.35);
  --blue-bright:   #00d4ff;
  --blue-mid:      #0099ff;
  --blue-deep:     #0052cc;
  --purple:        #7b4fff;
  --text-primary:  #f0f6ff;
  --text-secondary:#8fa3bf;
  --text-muted:    #4a6280;
  --radius-lg:     16px;
  --radius-xl:     24px;
  --radius-pill:   999px;
  --transition:    0.35s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ═══════════════════════════════════════
   SCROLLBAR
═══════════════════════════════════════ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: rgba(0,180,255,0.3); border-radius: 3px; }

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

.gradient-text {
  background: linear-gradient(135deg, #00d4ff 0%, #7b4fff 60%, #ff3dbd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-blue {
  background: linear-gradient(90deg, #00d4ff, #0099ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(0,180,255,0.3);
  color: var(--blue-bright);
  background: rgba(0,180,255,0.06);
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--text-secondary);
  max-width: 560px;
  margin-top: 14px;
}

section { padding: 120px 0; }

/* ═══════════════════════════════════════
   BUTTONS
═══════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #00d4ff 0%, #0052cc 100%);
  color: #fff;
  box-shadow: 0 0 30px rgba(0,180,255,0.35), 0 4px 20px rgba(0,82,204,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 0 50px rgba(0,180,255,0.55), 0 8px 30px rgba(0,82,204,0.5);
}
.btn-primary::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, #00d4ff, #7b4fff);
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition);
  filter: blur(8px);
}
.btn-primary:hover::after { opacity: 1; }

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  border-color: var(--blue-bright);
  color: var(--blue-bright);
  box-shadow: 0 0 20px rgba(0,180,255,0.15);
  transform: translateY(-2px);
}

/* ═══════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: var(--transition);
  padding: 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  max-width: 1280px;
  margin: 0 auto;
  transition: var(--transition);
}

#navbar.scrolled .nav-inner {
  background: rgba(3,7,18,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 14px 40px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  width: 36px; height: 36px;
  position: relative;
  flex-shrink: 0;
}

.logo-icon svg { width: 100%; height: 100%; }

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-cn {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.logo-en {
  font-size: 9px;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--blue-bright);
  transition: width var(--transition);
}

.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }

.nav-cta { display: flex; gap: 10px; align-items: center; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ═══════════════════════════════════════
   HERO SECTION
═══════════════════════════════════════ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 0;
}

#particle-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.25;
  pointer-events: none;
}
.hero-glow-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #00d4ff, transparent 70%);
  top: -100px; left: -100px;
  animation: glowPulse 6s ease-in-out infinite;
}
.hero-glow-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #7b4fff, transparent 70%);
  bottom: -80px; right: 10%;
  animation: glowPulse 8s ease-in-out infinite 2s;
}
.hero-glow-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, #0052cc, transparent 70%);
  top: 40%; right: 30%;
  animation: glowPulse 5s ease-in-out infinite 4s;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.2; transform: scale(1); }
  50%       { opacity: 0.35; transform: scale(1.08); }
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,180,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,180,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 24px 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 80px;
  width: 100%;
}

.hero-left { }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px 6px 8px;
  background: rgba(0,180,255,0.08);
  border: 1px solid rgba(0,180,255,0.2);
  border-radius: var(--radius-pill);
  font-size: 12px;
  color: var(--blue-bright);
  margin-bottom: 28px;
  animation: fadeSlideUp 0.8s ease both;
}

.hero-badge-dot {
  width: 8px; height: 8px;
  background: var(--blue-bright);
  border-radius: 50%;
  animation: blink 1.5s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

.hero-title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.03em;
  animation: fadeSlideUp 0.8s ease 0.1s both;
}

.hero-title .line-1 { display: block; color: var(--text-primary); }
.hero-title .line-2 {
  display: block;
  background: linear-gradient(90deg, #00d4ff 0%, #7b4fff 50%, #ff3dbd 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientFlow 4s linear infinite, fadeSlideUp 0.8s ease 0.1s both;
}

@keyframes gradientFlow {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}

.hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 24px 0 40px;
  line-height: 1.75;
  animation: fadeSlideUp 0.8s ease 0.2s both;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  animation: fadeSlideUp 0.8s ease 0.3s both;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 60px;
  animation: fadeSlideUp 0.8s ease 0.4s both;
}

.hero-stat { }
.hero-stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
}
.hero-stat-num span { color: var(--blue-bright); }
.hero-stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Hero right — 3D sphere / orbit visual */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 480px;
  animation: fadeSlideUp 0.8s ease 0.2s both;
}

.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0,180,255,0.15);
}
.orbit-ring:nth-child(1) {
  width: 340px; height: 340px;
  animation: orbitRotate 18s linear infinite;
}
.orbit-ring:nth-child(2) {
  width: 250px; height: 250px;
  animation: orbitRotate 12s linear infinite reverse;
}
.orbit-ring:nth-child(3) {
  width: 430px; height: 430px;
  animation: orbitRotate 25s linear infinite;
  border-color: rgba(123,79,255,0.1);
}

@keyframes orbitRotate {
  from { transform: rotate(0deg) rotateX(65deg); }
  to   { transform: rotate(360deg) rotateX(65deg); }
}

.orbit-dot {
  position: absolute;
  width: 8px; height: 8px;
  background: var(--blue-bright);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--blue-bright);
}
.orbit-ring:nth-child(1) .orbit-dot { top: -4px; left: calc(50% - 4px); }
.orbit-ring:nth-child(2) .orbit-dot { bottom: -4px; right: calc(50% - 4px); background: var(--purple); box-shadow: 0 0 10px var(--purple); }

.core-sphere {
  position: relative;
  z-index: 2;
  width: 160px; height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(0,212,255,0.6), rgba(0,82,204,0.8) 60%, rgba(3,7,18,0.9));
  box-shadow:
    0 0 60px rgba(0,180,255,0.4),
    0 0 120px rgba(0,82,204,0.3),
    inset 0 0 40px rgba(0,212,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: spherePulse 4s ease-in-out infinite;
}

@keyframes spherePulse {
  0%, 100% { box-shadow: 0 0 60px rgba(0,180,255,0.4), 0 0 120px rgba(0,82,204,0.3), inset 0 0 40px rgba(0,212,255,0.2); }
  50%       { box-shadow: 0 0 80px rgba(0,180,255,0.6), 0 0 160px rgba(0,82,204,0.4), inset 0 0 60px rgba(0,212,255,0.3); }
}

.core-icon { font-size: 52px; user-select: none; }

.floating-card {
  position: absolute;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(16px);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
}
.floating-card strong { display: block; color: var(--text-primary); font-size: 13px; margin-bottom: 2px; }
.floating-card-1 { top: 60px; left: -10px; animation: float 5s ease-in-out infinite; }
.floating-card-2 { bottom: 80px; left: -30px; animation: float 6s ease-in-out infinite 1.5s; }
.floating-card-3 { top: 40px; right: 0; animation: float 4.5s ease-in-out infinite 0.8s; }
.floating-card-4 { bottom: 60px; right: -10px; animation: float 5.5s ease-in-out infinite 2s; }

.fc-dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #22c55e;
  margin-right: 6px;
  animation: blink 1.5s infinite;
}

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

/* ═══════════════════════════════════════
   ABOUT
═══════════════════════════════════════ */
#about {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

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

.about-visual {
  position: relative;
  height: 420px;
}

.about-card-main {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-card-main::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: conic-gradient(from 0deg, transparent 60%, rgba(0,180,255,0.08) 100%);
  animation: rotateConic 8s linear infinite;
}

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

.about-matrix {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 32px;
}

.matrix-item {
  aspect-ratio: 1;
  background: rgba(0,180,255,0.05);
  border: 1px solid rgba(0,180,255,0.12);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  transition: var(--transition);
  cursor: default;
}
.matrix-item:hover {
  background: rgba(0,180,255,0.1);
  border-color: rgba(0,180,255,0.3);
  color: var(--blue-bright);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,180,255,0.15);
}
.matrix-item .mi-icon { font-size: 22px; }

.about-text .section-subtitle { max-width: 480px; }

.about-pillars {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 36px;
}

.pillar {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.pillar-icon {
  width: 44px; height: 44px;
  flex-shrink: 0;
  background: rgba(0,180,255,0.08);
  border: 1px solid rgba(0,180,255,0.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.pillar h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}
.pillar p { font-size: 13px; color: var(--text-secondary); }

/* ═══════════════════════════════════════
   PRODUCTS
═══════════════════════════════════════ */
#products {
  background: var(--bg-primary);
}

.products-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}
.products-header .section-subtitle { margin: 14px auto 0; }

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: default;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue-bright), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.product-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(0,180,255,0.06) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}

.product-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 30px rgba(0,180,255,0.08);
}
.product-card:hover::before { opacity: 1; }
.product-card:hover::after  { opacity: 1; }

.product-card.featured {
  background: linear-gradient(135deg, rgba(0,180,255,0.06) 0%, rgba(123,79,255,0.04) 100%);
  border-color: rgba(0,180,255,0.2);
  grid-column: span 2;
}

.product-card.featured .pc-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.pc-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, rgba(0,180,255,0.15), rgba(123,79,255,0.1));
  border: 1px solid rgba(0,180,255,0.2);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.pc-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(0,180,255,0.1);
  color: var(--blue-bright);
  margin-bottom: 12px;
}

.pc-title {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

.pc-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.pc-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.pc-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-secondary);
}
.pc-feature::before {
  content: '';
  display: block;
  width: 18px; height: 18px;
  min-width: 18px;
  border-radius: 50%;
  background: rgba(34,197,94,0.15);
  border: 1px solid rgba(34,197,94,0.3);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%2322c55e' d='M13.5 4.5l-7 7L3 8'/%3E%3C/svg%3E");
  background-size: 12px;
  background-repeat: no-repeat;
  background-position: center;
}

.industry-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.ind-tag {
  font-size: 11px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: var(--transition);
}
.ind-tag:hover {
  border-color: var(--blue-bright);
  color: var(--blue-bright);
}

/* ═══════════════════════════════════════
   TECH ADVANTAGES
═══════════════════════════════════════ */
#tech {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

#tech::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,180,255,0.4), transparent);
}

.tech-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}
.tech-header .section-subtitle { margin: 14px auto 0; }

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.tech-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.tech-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-bright), var(--purple));
  transform: scaleX(0);
  transition: transform var(--transition);
}

.tech-card:hover {
  border-color: rgba(0,180,255,0.2);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.3);
}
.tech-card:hover::after { transform: scaleX(1); }

.tc-icon {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  background: rgba(0,180,255,0.06);
  border: 1px solid rgba(0,180,255,0.15);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  transition: var(--transition);
}

.tech-card:hover .tc-icon {
  background: rgba(0,180,255,0.12);
  box-shadow: 0 0 20px rgba(0,180,255,0.2);
}

.tc-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
}
.tc-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.65; }

.tc-models {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.model-chip {
  font-size: 10px;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(0,180,255,0.08);
  border: 1px solid rgba(0,180,255,0.15);
  color: var(--blue-bright);
}

.tech-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  margin-top: 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.metric-item {
  background: var(--bg-secondary);
  padding: 36px 24px;
  text-align: center;
}

.metric-num {
  font-size: 44px;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--blue-bright), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.metric-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ═══════════════════════════════════════
   CASES
═══════════════════════════════════════ */
#cases { background: var(--bg-primary); }

.cases-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}
.cases-header .section-subtitle { margin: 14px auto 0; }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 64px;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
}

.case-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.3);
}

.case-industry {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue-bright);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.case-industry::before {
  content: '';
  display: block;
  width: 24px; height: 2px;
  background: var(--blue-bright);
}

.case-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.case-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.case-stats {
  display: flex;
  gap: 24px;
}

.cs-item { }
.cs-num {
  font-size: 26px;
  font-weight: 800;
  color: var(--blue-bright);
}
.cs-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.logo-wall {
  text-align: center;
}

.logo-wall-title {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.logo-wall-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 32px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}

.client-logo {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  transition: var(--transition);
  padding: 8px 16px;
  border-radius: 8px;
}
.client-logo:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.04);
}

/* ═══════════════════════════════════════
   CONTACT
═══════════════════════════════════════ */
#contact {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

#contact::before {
  content: '';
  position: absolute;
  bottom: -200px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,180,255,0.07), transparent 70%);
  pointer-events: none;
}

.contact-inner {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.contact-inner .section-subtitle {
  max-width: 480px;
  margin: 14px auto 40px;
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  transition: var(--transition);
}
.contact-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-3px);
}

.contact-card .cc-icon { font-size: 28px; margin-bottom: 12px; }
.contact-card .cc-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 6px; }
.contact-card .cc-value { font-size: 14px; font-weight: 600; color: var(--text-primary); }

.contact-btns {
  display: flex;
  gap: 14px;
  justify-content: center;
}

/* ═══════════════════════════════════════
   FOOTER
═══════════════════════════════════════ */
footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 48px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--text-secondary); }

.footer-copy {
  font-size: 12px;
  color: var(--text-muted);
}

/* ═══════════════════════════════════════
   SCROLL ANIMATIONS
═══════════════════════════════════════ */
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ═══════════════════════════════════════
   MOBILE NAV
═══════════════════════════════════════ */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(3,7,18,0.97);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
}
.mobile-nav-close {
  position: absolute;
  top: 24px; right: 24px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 28px;
  cursor: pointer;
}

/* ═══════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; gap: 60px; text-align: center; }
  .hero-actions { justify-content: center; }
  .hero-stats  { justify-content: center; }
  .hero-visual { height: 340px; }
  .about-grid  { grid-template-columns: 1fr; }
  .about-visual { height: 300px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .product-card.featured { grid-column: span 2; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-metrics { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  section { padding: 80px 0; }
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .hero-content { padding-top: 100px; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .section-subtitle { margin-left: auto; margin-right: auto; }
  .products-grid { grid-template-columns: 1fr; }
  .product-card.featured { grid-column: span 1; }
  .product-card.featured .pc-inner { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .tech-metrics { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 20px; text-align: center; }
  .logo-wall-inner { gap: 24px; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .contact-btns { flex-direction: column; }
  .hero-stats { gap: 24px; }
}