/* ============================================================
   MOBILE DATA ACCESS & RECHARGE INSIGHTS - DESIGN SYSTEM
   Colors: Dark Blue + Cyan + White | Tech-Style UI
   ============================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  --color-bg-primary:    #020b18;
  --color-bg-secondary:  #041428;
  --color-bg-card:       #071d35;
  --color-bg-card-hover: #0a2540;
  --color-accent-cyan:   #00d4ff;
  --color-accent-cyan2:  #00a8cc;
  --color-accent-blue:   #0056b3;
  --color-accent-glow:   rgba(0, 212, 255, 0.18);
  --color-text-primary:  #e8f4fd;
  --color-text-secondary:#9ab8d4;
  --color-text-muted:    #5a7a96;
  --color-white:         #ffffff;
  --color-border:        rgba(0, 212, 255, 0.15);
  --color-border-strong: rgba(0, 212, 255, 0.35);

  --gradient-hero:       linear-gradient(135deg, #020b18 0%, #041f3e 50%, #062845 100%);
  --gradient-card:       linear-gradient(145deg, #071d35, #0a2a48);
  --gradient-cyan:       linear-gradient(90deg, #00d4ff, #0099cc);
  --gradient-section:    linear-gradient(180deg, #020b18 0%, #031222 100%);
  --gradient-cta:        linear-gradient(135deg, #005fa3 0%, #007acc 50%, #00a8cc 100%);

  --font-primary:  'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-heading:  'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-xl:   32px;
  --radius-full: 9999px;

  --shadow-card:  0 4px 24px rgba(0,0,0,0.4), 0 0 0 1px rgba(0,212,255,0.08);
  --shadow-glow:  0 0 30px rgba(0, 212, 255, 0.2), 0 0 60px rgba(0, 212, 255, 0.08);
  --shadow-btn:   0 4px 20px rgba(0, 212, 255, 0.3);

  --transition-fast:   0.18s ease;
  --transition-normal: 0.3s ease;
  --transition-slow:   0.5s ease;

  --max-width:   1200px;
  --nav-height:  72px;
}

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

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

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a  { color: var(--color-accent-cyan); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-white); }

ul { list-style: none; }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-white);
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.2rem; }
p  { color: var(--color-text-secondary); font-size: 1rem; line-height: 1.8; }

.text-cyan   { color: var(--color-accent-cyan) !important; }
.text-muted  { color: var(--color-text-muted) !important; }
.text-white  { color: var(--color-white) !important; }
.text-center { text-align: center; }
.fw-600      { font-weight: 600; }

/* ---------- Layout Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 100px 0;
  position: relative;
}
.section-sm { padding: 60px 0; }
.section-alt { background: var(--gradient-section); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.flex         { display: flex; }
.flex-center  { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col     { display: flex; flex-direction: column; }
.gap-8  { gap: 8px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }

/* ---------- Section Labels ---------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-cyan);
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  margin-bottom: 20px;
}
.section-label::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-accent-cyan);
}

/* ---------- Section Heading ---------- */
.section-heading { margin-bottom: 16px; }
.section-subtext  { max-width: 620px; font-size: 1.05rem; color: var(--color-text-secondary); }
.section-header   { margin-bottom: 56px; }
.section-header.center { text-align: center; }
.section-header.center .section-subtext { margin: 0 auto; }

/* ---------- Divider ---------- */
.divider {
  width: 60px;
  height: 3px;
  background: var(--gradient-cyan);
  border-radius: 2px;
  margin: 20px 0;
}
.divider.center { margin: 20px auto; }

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(2, 11, 24, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
}
.navbar.scrolled {
  background: rgba(2, 11, 24, 0.98);
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}
.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-cyan);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-bg-primary);
  box-shadow: 0 0 16px rgba(0,212,255,0.4);
}
.nav-logo-text {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.01em;
}
.nav-logo-text span { color: var(--color-accent-cyan); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-white);
  background: rgba(255,255,255,0.06);
}
.nav-links a.active { color: var(--color-accent-cyan); }

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ---------- Mobile Nav ---------- */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0; right: 0;
  background: rgba(4, 20, 40, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 20px 24px 28px;
  z-index: 999;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
.mobile-nav a:hover { color: var(--color-white); background: rgba(255,255,255,0.05); }
.mobile-nav .btn { margin-top: 12px; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 12px 26px;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-normal);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--transition-fast);
}
.btn:hover::after { background: rgba(255,255,255,0.08); }

.btn-primary {
  background: var(--gradient-cta);
  color: var(--color-white);
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent-cyan);
  border: 1.5px solid var(--color-accent-cyan);
}
.btn-outline:hover {
  background: rgba(0,212,255,0.1);
  color: var(--color-white);
  border-color: var(--color-white);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255,255,255,0.05);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  color: var(--color-white);
  border-color: var(--color-border-strong);
}

.btn-lg { padding: 16px 36px; font-size: 1rem; }
.btn-sm { padding: 8px 18px; font-size: 0.82rem; }

.btn-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
}
.btn:hover .btn-icon { transform: translateX(4px); }

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,212,255,0.4), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}
.card:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  background: var(--color-bg-card-hover);
}
.card:hover::before { opacity: 1; }

.card-icon {
  width: 52px;
  height: 52px;
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
  transition: all var(--transition-normal);
}
.card:hover .card-icon {
  background: rgba(0,212,255,0.18);
  box-shadow: 0 0 20px rgba(0,212,255,0.2);
}

.card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card p  { font-size: 0.92rem; color: var(--color-text-secondary); line-height: 1.7; }

/* ---------- Stat Card ---------- */
.stat-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  transition: all var(--transition-normal);
}
.stat-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}
.stat-card .stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  background: var(--gradient-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
}
.stat-card .stat-label {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ---------- Blog Card ---------- */
.blog-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}
.blog-card:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}
.blog-card-thumb {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, #041f3e 0%, #0a2a48 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}
.blog-card-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(4,20,40,0.8) 100%);
}
.blog-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.blog-card-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-cyan);
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.18);
  border-radius: var(--radius-full);
  padding: 3px 12px;
  margin-bottom: 12px;
}
.blog-card h3 { font-size: 1.1rem; margin-bottom: 10px; line-height: 1.4; }
.blog-card h3 a { color: var(--color-white); transition: color var(--transition-fast); }
.blog-card h3 a:hover { color: var(--color-accent-cyan); }
.blog-card p  { font-size: 0.9rem; flex: 1; margin-bottom: 20px; }
.blog-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-top: auto;
}
.blog-card-meta .read-more {
  color: var(--color-accent-cyan);
  font-weight: 600;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition-fast);
}
.blog-card:hover .read-more { gap: 8px; }

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

/* Animated grid background */
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* Glowing orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.35;
}
.hero-orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,100,200,0.5), transparent 70%);
  top: -150px; right: -100px;
}
.hero-orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,212,255,0.3), transparent 70%);
  bottom: -100px; left: -80px;
}
.hero-orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(0,150,220,0.3), transparent 70%);
  top: 40%; left: 40%;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.25);
  border-radius: var(--radius-full);
  padding: 8px 18px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-accent-cyan);
  letter-spacing: 0.06em;
  margin-bottom: 28px;
}
.hero-badge-dot {
  width: 7px; height: 7px;
  background: var(--color-accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-accent-cyan);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}

.hero h1 {
  margin-bottom: 24px;
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
}
.hero h1 .highlight {
  background: var(--gradient-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-lead {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  max-width: 620px;
  line-height: 1.8;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  animation: float 3s ease-in-out infinite;
  z-index: 2;
}
.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, var(--color-accent-cyan), transparent);
}
@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* ============================================================
   PAGE HERO (Inner Pages)
   ============================================================ */
.page-hero {
  padding: 160px 0 80px;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.page-hero .hero-grid-bg { opacity: 0.5; }
.page-hero .hero-orb-1   { opacity: 0.2; }
.page-hero .hero-orb-2   { opacity: 0.15; }
.page-hero-content { position: relative; z-index: 2; max-width: 700px; margin: 0 auto; }
.page-hero h1 { margin-bottom: 18px; }
.page-hero p  { font-size: 1.1rem; color: var(--color-text-secondary); }

/* ============================================================
   FEATURE SECTIONS
   ============================================================ */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.feature-row.reverse { direction: rtl; }
.feature-row.reverse > * { direction: ltr; }

.feature-visual {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 48px;
  position: relative;
  overflow: hidden;
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.feature-visual::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(0,212,255,0.15), transparent 70%);
  border-radius: 50%;
}

.feature-visual-icon {
  font-size: 5rem;
  filter: drop-shadow(0 0 20px rgba(0,212,255,0.4));
  text-align: center;
}
.feature-visual-label {
  text-align: center;
  margin-top: 20px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.feature-content .section-label { margin-bottom: 16px; }
.feature-content h2 { margin-bottom: 18px; }
.feature-content p  { margin-bottom: 16px; font-size: 0.98rem; }

.feature-list { margin: 24px 0; display: flex; flex-direction: column; gap: 12px; }
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.92rem;
  color: var(--color-text-secondary);
}
.feature-list li::before {
  content: '✦';
  color: var(--color-accent-cyan);
  font-size: 0.7rem;
  margin-top: 5px;
  flex-shrink: 0;
}

/* ============================================================
   STATS STRIP
   ============================================================ */
.stats-strip {
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 48px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stats-grid-item {
  text-align: center;
  padding: 20px;
  border-right: 1px solid var(--color-border);
}
.stats-grid-item:last-child { border-right: none; }
.stats-grid-item .num {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--gradient-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  line-height: 1;
  margin-bottom: 8px;
}
.stats-grid-item .lbl {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ============================================================
   TABS
   ============================================================ */
.tabs {
  display: flex;
  gap: 8px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 6px;
  margin-bottom: 48px;
  flex-wrap: wrap;
  width: fit-content;
}
.tab-btn {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 10px 22px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  background: transparent;
}
.tab-btn.active,
.tab-btn:hover {
  background: var(--gradient-cta);
  color: var(--color-white);
  box-shadow: 0 2px 12px rgba(0,212,255,0.25);
}

.tab-panel { display: none; animation: fadeUp 0.4s ease; }
.tab-panel.active { display: block; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   ACCORDION / FAQ
   ============================================================ */
.accordion { display: flex; flex-direction: column; gap: 12px; }
.accordion-item {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.accordion-item:hover { border-color: var(--color-border-strong); }
.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  gap: 16px;
}
.accordion-icon {
  width: 28px; height: 28px;
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--color-accent-cyan);
  flex-shrink: 0;
  transition: transform var(--transition-fast), background var(--transition-fast);
}
.accordion-item.open .accordion-icon {
  transform: rotate(45deg);
  background: rgba(0,212,255,0.2);
}
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.accordion-item.open .accordion-body { max-height: 400px; }
.accordion-body-inner {
  padding: 0 24px 20px;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ============================================================
   CTA BANNER
   ============================================================ */
.cta-banner {
  background: linear-gradient(135deg, #031629 0%, #062240 50%, #031629 100%);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: var(--radius-xl);
  padding: 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin: 0 24px;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -100px; left: 50%; transform: translateX(-50%);
  width: 500px; height: 300px;
  background: radial-gradient(ellipse, rgba(0,212,255,0.12), transparent 70%);
  pointer-events: none;
}
.cta-banner h2 { margin-bottom: 16px; }
.cta-banner p  { font-size: 1.05rem; margin-bottom: 36px; }
.cta-banner .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
}
.breadcrumb a { color: var(--color-text-muted); transition: color var(--transition-fast); }
.breadcrumb a:hover { color: var(--color-accent-cyan); }
.breadcrumb span { color: var(--color-accent-cyan); }

/* ============================================================
   ARTICLE / CONTENT
   ============================================================ */
.article-body h2 { font-size: 1.7rem; margin: 40px 0 16px; color: var(--color-white); }
.article-body h3 { font-size: 1.3rem; margin: 30px 0 12px; color: var(--color-white); }
.article-body p  { margin-bottom: 20px; font-size: 1.02rem; color: var(--color-text-secondary); line-height: 1.9; }
.article-body ul {
  list-style: none;
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.article-body ul li {
  padding-left: 24px;
  position: relative;
  font-size: 0.98rem;
  color: var(--color-text-secondary);
}
.article-body ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-accent-cyan);
}
.article-body .callout {
  background: rgba(0,212,255,0.06);
  border-left: 3px solid var(--color-accent-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  margin: 28px 0;
  font-size: 0.98rem;
  color: var(--color-text-secondary);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: #010912;
  border-top: 1px solid var(--color-border);
  padding: 80px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}
.footer-brand { max-width: 300px; }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.footer-logo-icon {
  width: 36px; height: 36px;
  background: var(--gradient-cyan);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-bg-primary);
}
.footer-logo-text { font-size: 1rem; font-weight: 700; color: var(--color-white); }
.footer-logo-text span { color: var(--color-accent-cyan); }
.footer-desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}
.footer-contact { display: flex; flex-direction: column; gap: 8px; }
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.footer-contact-item .icon { color: var(--color-accent-cyan); font-size: 0.9rem; margin-top: 1px; }

.footer-col h4 {
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 20px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
}
.footer-links a:hover { color: var(--color-accent-cyan); }
.footer-links a::before { content: '›'; color: var(--color-accent-cyan); opacity: 0; transition: opacity var(--transition-fast); }
.footer-links a:hover::before { opacity: 1; }

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}
.footer-bottom-links {
  display: flex;
  gap: 20px;
}
.footer-bottom-links a {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.footer-bottom-links a:hover { color: var(--color-accent-cyan); }

/* ============================================================
   MISC COMPONENTS
   ============================================================ */

/* Tag / Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  padding: 4px 12px;
}
.badge-cyan {
  color: var(--color-accent-cyan);
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.2);
}
.badge-blue {
  color: #6ab0ff;
  background: rgba(0,86,179,0.15);
  border: 1px solid rgba(0,86,179,0.3);
}

/* Icon List */
.icon-list { display: flex; flex-direction: column; gap: 16px; }
.icon-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}
.icon-list li .ico {
  width: 40px; height: 40px;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.18);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* Highlight Box */
.highlight-box {
  background: rgba(0,212,255,0.05);
  border: 1px solid rgba(0,212,255,0.15);
  border-radius: var(--radius-md);
  padding: 28px;
}

/* Network visual */
.network-nodes {
  position: relative;
  width: 100%;
  height: 200px;
  margin: 20px 0;
}
.node {
  position: absolute;
  width: 14px;
  height: 14px;
  background: var(--color-accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(0,212,255,0.6);
  animation: nodePulse 3s ease-in-out infinite;
}
.node:nth-child(1) { top: 10%; left: 15%; animation-delay: 0s; }
.node:nth-child(2) { top: 50%; left: 50%; width:18px; height:18px; animation-delay: 0.5s; }
.node:nth-child(3) { top: 20%; left: 80%; animation-delay: 1s; }
.node:nth-child(4) { top: 75%; left: 30%; animation-delay: 1.5s; }
.node:nth-child(5) { top: 65%; left: 70%; animation-delay: 2s; }
@keyframes nodePulse {
  0%, 100% { box-shadow: 0 0 12px rgba(0,212,255,0.6); }
  50%       { box-shadow: 0 0 24px rgba(0,212,255,1), 0 0 48px rgba(0,212,255,0.3); }
}

/* Ping animation for node lines */
.node-line {
  position: absolute;
  background: linear-gradient(90deg, transparent, rgba(0,212,255,0.3), transparent);
  height: 1px;
  transform-origin: left center;
}

/* Data flow bar */
.data-bar {
  width: 100%;
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
  margin: 6px 0;
}
.data-bar-fill {
  height: 100%;
  background: var(--gradient-cyan);
  border-radius: 3px;
  animation: dataFlow 3s ease-in-out infinite;
}
@keyframes dataFlow {
  0%   { width: 0%; }
  60%  { width: var(--fill, 70%); }
  100% { width: var(--fill, 70%); }
}

/* Process Steps */
.process-steps { display: flex; flex-direction: column; gap: 0; }
.process-step {
  display: flex;
  gap: 20px;
  position: relative;
}
.process-step:not(:last-child) .step-line {
  position: absolute;
  left: 19px;
  top: 48px;
  width: 2px;
  height: calc(100% - 8px);
  background: linear-gradient(180deg, rgba(0,212,255,0.4), rgba(0,212,255,0.05));
}
.step-num {
  width: 40px; height: 40px;
  min-width: 40px;
  background: rgba(0,212,255,0.1);
  border: 1.5px solid rgba(0,212,255,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-accent-cyan);
  margin-top: 4px;
  position: relative;
  z-index: 1;
}
.step-content { padding-bottom: 32px; }
.step-content h4 { font-size: 1rem; margin-bottom: 6px; color: var(--color-white); }
.step-content p  { font-size: 0.9rem; color: var(--color-text-secondary); }

/* ============================================================
   PAGE-SPECIFIC: CONTACT
   ============================================================ */
.contact-form {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-group { margin-bottom: 22px; }
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}
.form-control {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  font-size: 0.95rem;
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}
.form-control:focus {
  border-color: rgba(0,212,255,0.5);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.08);
  background: rgba(255,255,255,0.06);
}
.form-control::placeholder { color: var(--color-text-muted); }
textarea.form-control { resize: vertical; min-height: 130px; }

/* ============================================================
   LEGAL PAGES
   ============================================================ */
.legal-content { max-width: 800px; }
.legal-content h2 { font-size: 1.4rem; margin: 40px 0 14px; }
.legal-content h3 { font-size: 1.1rem; margin: 28px 0 10px; color: var(--color-text-secondary); font-weight: 600; }
.legal-content p  { font-size: 0.97rem; color: var(--color-text-secondary); margin-bottom: 16px; line-height: 1.85; }
.legal-content ul {
  margin: 14px 0 20px;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.legal-content ul li {
  padding-left: 20px;
  position: relative;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}
.legal-content ul li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent-cyan);
}
.legal-date {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .grid-4      { grid-template-columns: repeat(2, 1fr); }
  .feature-row { gap: 40px; }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }
  .section       { padding: 72px 0; }
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }

  .grid-2, .grid-3  { grid-template-columns: 1fr; }
  .stats-grid       { grid-template-columns: repeat(2, 1fr); }
  .stats-grid-item:nth-child(2) { border-right: none; }
  .stats-grid-item:nth-child(3) { border-top: 1px solid var(--color-border); }
  .stats-grid-item:nth-child(4) { border-top: 1px solid var(--color-border); border-right: none; }

  .feature-row, .feature-row.reverse { grid-template-columns: 1fr; direction: ltr; }

  .footer-grid    { grid-template-columns: 1fr; }
  .footer-brand   { max-width: 100%; }
  .footer-bottom  { flex-direction: column; text-align: center; }

  .cta-banner     { padding: 40px 24px; margin: 0; }
  .hero-cta       { flex-direction: column; gap: 12px; }
  .hero-cta .btn  { width: 100%; justify-content: center; }

  .tabs { width: 100%; justify-content: center; }
  .section-header { margin-bottom: 36px; }
  .contact-form   { padding: 28px 20px; }
}

@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .stats-grid-item { border-right: none !important; border-top: 1px solid var(--color-border); }
  .stats-grid-item:first-child { border-top: none; }
  h1 { font-size: 1.9rem; }
  h2 { font-size: 1.5rem; }
}