/* ============================================
   衡水飞拓科技 - 科技感增强版
   深蓝+深灰 | 网格纹理 | 光效动画 | 科技氛围
   ============================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #c8d6e5;
  background: #080e1a;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }

/* ---------- CSS Variables ---------- */
:root {
  --primary: #0a1628;
  --primary-dark: #050c18;
  --primary-light: #0f2240;
  --accent: #00d4ff;
  --accent-dim: #0090b0;
  --accent-glow: rgba(0,212,255,.35);
  --accent2: #00ff88;
  --accent2-glow: rgba(0,255,136,.25);
  --white: #e8f0fe;
  --gray-900: #0a1628;
  --gray-700: #2a3a52;
  --gray-500: #5a6a82;
  --gray-300: #8899aa;
  --gray-100: #111c30;
  --bg: #080e1a;
  --shadow: 0 2px 20px rgba(0,212,255,.06);
  --shadow-lg: 0 8px 40px rgba(0,212,255,.12);
  --shadow-glow: 0 0 30px rgba(0,212,255,.15);
  --radius: 4px;
  --max-width: 1200px;
  --transition: .35s cubic-bezier(.4,0,.2,1);
}

/* ---------- Body Grid Overlay ---------- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(0,212,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ---------- Scan Line ---------- */
body::after {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  z-index: 9999;
  animation: scanLine 4s ease-in-out infinite;
  opacity: .4;
}
@keyframes scanLine {
  0%, 100% { top: 0; opacity: 0; }
  10% { opacity: .4; }
  50% { top: 100vh; opacity: .15; }
  51% { opacity: 0; }
}

/* ---------- Container ---------- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

/* ============================================
   Navigation
   ============================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(5,12,24,.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,212,255,.1);
  height: 60px;
  transition: var(--transition);
}
.navbar .container {
  display: flex;
  align-items: center;
  height: 100%;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-size: 17px;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: .5px;
}
.nav-logo .logo-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--accent), #006080);
  border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 900; color: #fff;
  box-shadow: 0 0 12px var(--accent-glow);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-links a {
  color: rgba(232,240,254,.6);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  border-radius: 4px;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 50%; right: 50%;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
  box-shadow: 0 0 6px var(--accent-glow);
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after,
.nav-links a.active::after { left: 20%; right: 20%; }
.nav-links a.active { color: var(--accent); }
.nav-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}
.nav-phone svg { flex-shrink: 0; stroke: var(--accent); }
.nav-phone span { letter-spacing: 1.5px; }

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(0,212,255,.3);
  border-radius: 4px;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 20px; height: 2px;
  background: var(--accent);
  margin: 4px 0;
  transition: var(--transition);
}

/* ============================================
   Page Banner (Inner Pages)
   ============================================ */
.page-banner {
  margin-top: 60px;
  background: linear-gradient(135deg, #050c18 0%, #0a1e3a 50%, #0f2a4a 100%);
  padding: 70px 0;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid rgba(0,212,255,.15);
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(0,212,255,.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(0,255,136,.06) 0%, transparent 50%);
}
.page-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(0,212,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,.04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.page-banner h1 {
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
  text-shadow: 0 0 30px rgba(0,212,255,.3);
}
.page-banner p {
  font-size: 16px;
  color: rgba(200,214,229,.7);
  position: relative;
  z-index: 1;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  letter-spacing: .5px;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.1) 0%, transparent 50%);
  opacity: 0;
  transition: var(--transition);
}
.btn:hover::before { opacity: 1; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #007090);
  color: #fff;
  box-shadow: 0 0 20px rgba(0,212,255,.2);
}
.btn-primary:hover {
  box-shadow: 0 0 30px rgba(0,212,255,.35);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(0,212,255,.4);
}
.btn-outline:hover {
  background: rgba(0,212,255,.08);
  border-color: var(--accent);
  box-shadow: 0 0 15px rgba(0,212,255,.15);
}
.btn-white {
  background: rgba(255,255,255,.95);
  color: var(--primary);
  font-weight: 700;
}
.btn-white:hover {
  background: #fff;
  box-shadow: 0 0 20px rgba(255,255,255,.2);
}

/* ============================================
   Section Common
   ============================================ */
.section {
  padding: 90px 0;
  position: relative;
  z-index: 1;
}
.section-dark {
  background: linear-gradient(180deg, #060e1c 0%, #0a1830 100%);
  color: #fff;
  border-top: 1px solid rgba(0,212,255,.08);
  border-bottom: 1px solid rgba(0,212,255,.08);
}
.section-dark::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(0,212,255,.05) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 80%, rgba(0,255,136,.03) 0%, transparent 60%);
  pointer-events: none;
}
.section-alt {
  background: #0b1424;
}
.section-alt::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(0,212,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,.02) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
  position: relative;
  z-index: 1;
}
.section-header h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
  text-shadow: 0 0 20px rgba(0,212,255,.2);
}
.section-header p {
  font-size: 15px;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
}
.section-header .divider {
  width: 60px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  margin: 18px auto 0;
  box-shadow: 0 0 10px var(--accent-glow);
}

/* ============================================
   Hero Banner
   ============================================ */
.hero {
  margin-top: 60px;
  position: relative;
  overflow: hidden;
}
.hero-slides {
  position: relative;
  height: 560px;
}
.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  transition: opacity 1.2s ease;
  pointer-events: none;
}
.hero-slide.active {
  opacity: 1;
  pointer-events: auto;
}
.hero-slide .slide-bg {
  position: absolute;
  inset: 0;
}
.hero-slide:nth-child(1) .slide-bg {
  background: radial-gradient(ellipse at 30% 40%, #0a1e3a 0%, #050c18 60%, #020810 100%);
}
.hero-slide:nth-child(2) .slide-bg {
  background: radial-gradient(ellipse at 60% 30%, #0c2240 0%, #060e1c 60%, #020810 100%);
}
.hero-slide:nth-child(3) .slide-bg {
  background: radial-gradient(ellipse at 50% 50%, #081a35 0%, #040a16 60%, #020810 100%);
}
/* Tech grid pattern on slides */
.hero-slide .slide-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(0,212,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,.06) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
/* Glowing orbs */
.hero-slide .slide-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 60%, rgba(0,212,255,.12) 0%, transparent 40%),
    radial-gradient(circle at 80% 40%, rgba(0,255,136,.08) 0%, transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(0,100,200,.06) 0%, transparent 40%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}
@keyframes heroGlow {
  0% { opacity: .6; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.05); }
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 48px;
  color: #fff;
}
.hero-content h1 {
  font-size: 44px;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.25;
  text-shadow: 0 0 40px rgba(0,212,255,.25);
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-content p {
  font-size: 17px;
  color: rgba(200,214,229,.75);
  margin-bottom: 36px;
  max-width: 620px;
  line-height: 1.7;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 12px;
}
.hero-dots .dot {
  width: 32px; height: 3px;
  border-radius: 2px;
  background: rgba(0,212,255,.25);
  cursor: pointer;
  transition: var(--transition);
}
.hero-dots .dot.active {
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
  width: 48px;
}

/* ============================================
   Products Grid
   ============================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}
.product-card {
  background: rgba(11,20,36,.8);
  border: 1px solid rgba(0,212,255,.1);
  border-radius: 6px;
  padding: 36px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition);
}
.product-card:hover::before { opacity: 1; }
.product-card:hover {
  border-color: rgba(0,212,255,.3);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}
.product-card .icon {
  width: 60px; height: 60px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(0,212,255,.15) 0%, rgba(0,255,136,.1) 100%);
  border: 1px solid rgba(0,212,255,.2);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  transition: var(--transition);
}
.product-card:hover .icon {
  box-shadow: 0 0 20px var(--accent-glow);
  border-color: var(--accent);
}
.product-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.product-card p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 16px;
}
.product-card .link {
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.product-card .link:hover { text-shadow: 0 0 10px var(--accent-glow); }

/* ============================================
   Solutions Cards
   ============================================ */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}
.solution-card {
  display: flex;
  gap: 20px;
  background: rgba(11,20,36,.8);
  border: 1px solid rgba(0,212,255,.08);
  border-radius: 6px;
  padding: 28px;
  transition: var(--transition);
  border-left: 2px solid transparent;
}
.solution-card:hover {
  border-left-color: var(--accent);
  border-color: rgba(0,212,255,.2);
  box-shadow: var(--shadow-glow);
}
.solution-card .sol-icon {
  width: 48px; height: 48px;
  background: rgba(0,212,255,.08);
  border: 1px solid rgba(0,212,255,.15);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.solution-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 6px;
}
.solution-card p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ============================================
   Process Flow
   ============================================ */
.process-flow {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0;
  position: relative;
  z-index: 1;
}
.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 130px;
  text-align: center;
}
.process-step .step-num {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(0,212,255,.1);
  border: 2px solid var(--accent);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 10px;
  position: relative;
  z-index: 2;
  box-shadow: 0 0 15px var(--accent-glow);
  transition: var(--transition);
}
.process-step:hover .step-num {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 25px var(--accent-glow);
}
.process-step .step-label {
  font-size: 12px;
  color: var(--gray-300);
  line-height: 1.5;
  font-weight: 500;
}
.process-arrow {
  display: flex;
  align-items: center;
  color: rgba(0,212,255,.4);
  font-size: 18px;
  padding-top: 0;
  margin-top: 10px;
}

/* ============================================
   Advantages
   ============================================ */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  position: relative;
  z-index: 1;
}
.advantage-item {
  text-align: center;
  padding: 32px 16px;
  border: 1px solid rgba(0,212,255,.06);
  border-radius: 6px;
  transition: var(--transition);
}
.advantage-item:hover {
  border-color: rgba(0,212,255,.2);
  background: rgba(0,212,255,.03);
}
.advantage-item .adv-num {
  font-size: 32px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  text-shadow: none;
}
.advantage-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.advantage-item p {
  font-size: 12px;
  color: rgba(200,214,229,.5);
  line-height: 1.6;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  background: linear-gradient(135deg, #060e1c 0%, #0a1e3a 50%, #081628 100%);
  padding: 70px 0;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(0,212,255,.1);
  border-bottom: 1px solid rgba(0,212,255,.1);
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(0,212,255,.1) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(0,255,136,.06) 0%, transparent 50%);
}
.cta-section h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
  text-shadow: 0 0 30px rgba(0,212,255,.3);
}
.cta-section p {
  position: relative;
  z-index: 1;
}
.cta-section .phone {
  font-size: 38px;
  font-weight: 800;
  margin: 24px 0;
  letter-spacing: 3px;
  position: relative;
  z-index: 1;
}
.cta-section .phone a {
  color: var(--accent);
  text-shadow: 0 0 30px var(--accent-glow);
  transition: var(--transition);
}
.cta-section .phone a:hover {
  text-shadow: 0 0 50px var(--accent-glow);
}

/* ============================================
   Contact Form
   ============================================ */
.form-card {
  background: rgba(11,20,36,.9);
  border: 1px solid rgba(0,212,255,.12);
  border-radius: 6px;
  padding: 40px;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}
.form-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.form-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 28px;
  text-align: center;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-300);
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 11px 14px;
  font-size: 14px;
  border: 1px solid rgba(0,212,255,.15);
  border-radius: var(--radius);
  outline: none;
  transition: var(--transition);
  font-family: inherit;
  background: rgba(5,12,24,.6);
  color: var(--white);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--gray-500); }
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 15px rgba(0,212,255,.15);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select option { background: #0a1628; color: #c8d6e5; }
.form-submit {
  width: 100%;
  padding: 13px;
  background: linear-gradient(135deg, var(--accent), #007090);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: .5px;
  box-shadow: 0 0 20px rgba(0,212,255,.2);
}
.form-submit:hover {
  box-shadow: 0 0 30px rgba(0,212,255,.4);
  transform: translateY(-1px);
}

/* ============================================
   Product Detail
   ============================================ */
.product-detail { padding: 70px 0; position: relative; z-index: 1; }
.product-detail .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}
.product-detail .prod-info h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
  text-shadow: 0 0 20px rgba(0,212,255,.2);
}
.product-detail .prod-info .desc {
  font-size: 15px;
  color: var(--gray-300);
  line-height: 1.8;
  margin-bottom: 24px;
}
.product-detail .prod-visual {
  background: rgba(11,20,36,.6);
  border: 1px solid rgba(0,212,255,.1);
  border-radius: 6px;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
  position: relative;
  overflow: hidden;
}
.product-detail .prod-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(0,212,255,.08) 0%, transparent 70%);
}
.feature-list { margin-top: 24px; }
.feature-list h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 14px;
}
.feature-list ul { display: grid; gap: 10px; }
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--gray-300);
  line-height: 1.6;
}
.feature-list li::before {
  content: '▸';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.value-block {
  margin-top: 24px;
  padding: 20px;
  background: rgba(0,212,255,.04);
  border-radius: 6px;
  border-left: 2px solid var(--accent);
}
.value-block h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}
.value-block p {
  font-size: 14px;
  color: var(--gray-300);
  line-height: 1.7;
}
.deploy-tag {
  display: inline-block;
  margin-top: 16px;
  padding: 6px 16px;
  background: rgba(0,255,136,.06);
  border: 1px solid rgba(0,255,136,.2);
  color: var(--accent2);
  font-size: 12px;
  font-weight: 600;
  border-radius: 20px;
}

/* ============================================
   Case Cards
   ============================================ */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}
.case-card {
  background: rgba(11,20,36,.8);
  border: 1px solid rgba(0,212,255,.08);
  border-radius: 6px;
  overflow: hidden;
  transition: var(--transition);
}
.case-card:hover {
  border-color: rgba(0,212,255,.25);
  box-shadow: var(--shadow-glow);
}
.case-card .case-header {
  height: 150px;
  background: linear-gradient(135deg, rgba(0,212,255,.1) 0%, rgba(0,255,136,.06) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  border-bottom: 1px solid rgba(0,212,255,.1);
  position: relative;
}
.case-card .case-header::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(0,212,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,.03) 1px, transparent 1px);
  background-size: 30px 30px;
}
.case-card .case-body { padding: 24px; }
.case-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.case-card .case-section { margin-bottom: 10px; }
.case-card .case-section .label {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 4px;
  letter-spacing: 1px;
}
.case-card .case-section p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ============================================
   About Page
   ============================================ */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
  position: relative;
  z-index: 1;
}
.about-text h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}
.about-text p {
  font-size: 15px;
  color: var(--gray-300);
  line-height: 1.8;
  margin-bottom: 16px;
}
.about-text strong { color: var(--accent); }
.about-image {
  border-radius: 6px;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
  position: relative;
  z-index: 1;
}
.value-card {
  text-align: center;
  padding: 32px 20px;
  background: rgba(11,20,36,.8);
  border: 1px solid rgba(0,212,255,.08);
  border-radius: 6px;
  transition: var(--transition);
}
.value-card:hover {
  border-color: rgba(0,212,255,.2);
  box-shadow: var(--shadow-glow);
}
.value-card .v-icon {
  width: 52px; height: 52px;
  margin: 0 auto 16px;
  background: rgba(0,212,255,.08);
  border: 1px solid rgba(0,212,255,.15);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
}
.value-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.value-card p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ============================================
   Contact Page
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  position: relative;
  z-index: 1;
}
.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-item .c-icon {
  width: 44px; height: 44px;
  background: rgba(0,212,255,.08);
  border: 1px solid rgba(0,212,255,.15);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-item h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
}
.contact-item p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.5;
}
.contact-item a { color: var(--accent); transition: var(--transition); }
.contact-item a:hover { text-shadow: 0 0 10px var(--accent-glow); }

/* ============================================
   Footer
   ============================================ */
.footer {
  background: #040a14;
  color: rgba(200,214,229,.5);
  padding: 50px 0 30px;
  border-top: 1px solid rgba(0,212,255,.08);
  position: relative;
  z-index: 1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 30px;
}
.footer-col h4 {
  color: var(--white);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-col p,
.footer-col a {
  font-size: 13px;
  color: rgba(200,214,229,.45);
  line-height: 1.8;
  display: block;
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(0,212,255,.06);
  padding-top: 20px;
  text-align: center;
  font-size: 12px;
  color: rgba(200,214,229,.3);
}

/* ============================================
   Scroll to Top
   ============================================ */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 42px;
  height: 42px;
  background: rgba(0,212,255,.15);
  border: 1px solid rgba(0,212,255,.3);
  color: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 999;
}
.scroll-top.visible { opacity: 1; pointer-events: auto; }
.scroll-top:hover {
  background: rgba(0,212,255,.25);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-2px);
}

/* ============================================
   Tech Decoration - Corner Brackets
   ============================================ */
.tech-corner {
  position: relative;
}
.tech-corner::before,
.tech-corner::after {
  content: '';
  position: absolute;
  width: 20px; height: 20px;
  border-color: rgba(0,212,255,.3);
  border-style: solid;
  z-index: 5;
}
.tech-corner::before {
  top: -1px; left: -1px;
  border-width: 2px 0 0 2px;
}
.tech-corner::after {
  bottom: -1px; right: -1px;
  border-width: 0 2px 2px 0;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-phone { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(5,12,24,.97);
    backdrop-filter: blur(20px);
    padding: 10px 20px 20px;
    border-bottom: 1px solid rgba(0,212,255,.1);
  }
  .nav-links.open a {
    padding: 12px 0;
    border-bottom: 1px solid rgba(0,212,255,.06);
  }
  .hero-slides { height: 420px; }
  .hero-content h1 { font-size: 26px; }
  .hero-content p { font-size: 14px; }
  .products-grid { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .process-flow { gap: 6px; }
  .process-step { width: 90px; }
  .process-step .step-label { font-size: 10px; }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: 1fr; }
  .about-content { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .product-detail .container { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .page-banner { padding: 50px 0; }
  .page-banner h1 { font-size: 26px; }
}
@media (max-width: 480px) {
  .hero-slides { height: 380px; }
  .hero-content { padding: 0 20px; }
  .hero-content h1 { font-size: 22px; }
  .hero-content p { font-size: 13px; }
  .hero-btns { flex-direction: column; }
  .hero-btns .btn { text-align: center; justify-content: center; }
  .process-step { width: 70px; }
  .process-arrow { font-size: 14px; }
  .cta-section .phone { font-size: 26px; }
}

/* ============================================
   Keyframe Animations
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 15px var(--accent-glow); }
  50% { box-shadow: 0 0 30px var(--accent-glow); }
}
.animate-in {
  animation: fadeInUp .6s ease forwards;
  opacity: 0;
}
.animate-in.visible { opacity: 1; }