@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Space+Grotesk:wght@400;600;700&display=swap');

:root {
  /* Palette: Deep Charcoal, Matte Black, Electric Cyan */
  --c-base: #0B0F19;
  --c-surface: #131B2C;
  --c-surface-hi: #1A2438;
  --c-border: rgba(255, 255, 255, 0.08);
  --c-text: #E2E8F0;
  --c-text-muted: #94A3B8;
  --c-accent: #00E5FF; /* Electric Cyan */
  --c-accent-dim: rgba(0, 229, 255, 0.1);
  
  /* Typography */
  --ff-head: 'Space Grotesk', sans-serif;
  --ff-body: 'Inter', sans-serif;

  /* Spacing & Layout */
  --w-max: 1280px;
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 16px;
  --sh-glow: 0 0 20px var(--c-accent-dim);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--c-base);
  color: var(--c-text);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--ff-body);
  line-height: 1.6;
  color: var(--c-text);
  overflow-x: hidden;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-head);
  font-weight: 700;
  color: #fff;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem); }
h2 { font-size: clamp(2rem, 3vw + 1rem, 3rem); }
h3 { font-size: clamp(1.5rem, 2vw + 1rem, 2rem); }

p { margin-bottom: 1.5rem; color: var(--c-text-muted); }
a { color: inherit; text-decoration: none; transition: 0.3s ease; }

/* Utilities & Container */
.flow-container {
  width: 100%;
  max-width: var(--w-max);
  margin: 0 auto;
  padding-inline: clamp(1rem, 5vw, 4rem);
}

.text-accent { color: var(--c-accent); }
.bg-surface { background-color: var(--c-surface); }

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
  padding-block: 1rem;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--ff-head);
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.05em;
}

.logo span { color: var(--c-accent); }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--c-text-muted);
  position: relative;
}

.nav-links a:hover {
  color: var(--c-accent);
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--c-accent);
  transition: width 0.3s ease;
}

.nav-links a:hover::after { width: 100%; }

/* Mobile Nav Toggle */
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-family: var(--ff-head);
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-primary {
  background: var(--c-accent);
  color: var(--c-base);
  border: 1px solid var(--c-accent);
}

.btn-primary:hover {
  background: transparent;
  color: var(--c-accent);
  box-shadow: var(--sh-glow);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid var(--c-border);
}

.btn-outline:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

/* Sections & Layout */
section {
  padding-block: clamp(4rem, 8vw, 8rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.hero-img {
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  border: 1px solid var(--c-border);
  object-fit: cover;
}

/* Cards */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--c-surface);
  padding: 2rem;
  border-radius: var(--r-md);
  border: 1px solid var(--c-border);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--c-accent);
}

.card h3 { margin-bottom: 1rem; font-size: 1.25rem; }

/* Stats */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-item h2 {
  font-size: clamp(3rem, 5vw, 4rem);
  color: var(--c-accent);
  margin-bottom: 0.5rem;
}

.stat-item p {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #fff;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--c-border);
  padding: 1.5rem 0;
}

.faq-q {
  font-family: var(--ff-head);
  font-size: 1.2rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.5rem;
  cursor: pointer;
}

.faq-a {
  font-size: 0.95rem;
  line-height: 1.7;
}

/* CTA Band */
.cta-band {
  background: linear-gradient(135deg, var(--c-surface-hi) 0%, var(--c-surface) 100%);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  text-align: center;
  padding: 4rem 2rem;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 2px;
  background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
}

/* Footer */
.site-footer {
  background-color: #05080f;
  padding-top: 4rem;
  border-top: 1px solid var(--c-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 1.5rem;
  color: #fff;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.75rem; }
.footer-col ul li a { color: var(--c-text-muted); font-size: 0.9rem; }
.footer-col ul li a:hover { color: var(--c-accent); }

.footer-bottom {
  border-top: 1px solid var(--c-border);
  padding-block: 2rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--c-text-muted);
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-row { grid-template-columns: 1fr; gap: 3rem; }
  
  .nav-links {
    display: none; /* Simplification for snippet */
    /* In production would toggle via JS */
  }
  .nav-toggle { display: block; }
}
img,svg,video{max-width:100%;height:auto}
html{-webkit-text-size-adjust:100%}
body{margin:0}
*{box-sizing:border-box}