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

:root {
  --bg: #0a0a0f;
  --bg2: #12121a;
  --bg3: #1a1a25;
  --text: #e8e8ed;
  --text2: #9999aa;
  --accent: #4a9eff;
  --accent2: #2dd4a8;
  --accent-glow: rgba(74, 158, 255, 0.15);
  --radius: 8px;
}

html { scroll-behavior: smooth; color-scheme: dark; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { padding: 0 clamp(24px, 5vw, 80px); }

/* ---- NAV ---- */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav-inner {
  padding: 0 clamp(24px, 5vw, 80px);
  display: flex; align-items: center; gap: 24px;
  height: 72px;
}
.nav-logo {
  display: flex; align-items: center; gap: 14px;
  text-decoration: none; color: var(--text);
  flex-shrink: 0;
}
.logo-text { font-weight: 700; font-size: 14px; letter-spacing: 3px; }
.nav-links { display: flex; align-items: center; gap: clamp(12px, 2vw, 36px); margin-left: auto; white-space: nowrap; }
.nav-links a {
  color: var(--text2); text-decoration: none; font-size: 13px;
  font-weight: 500; letter-spacing: 0.5px;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  background: var(--accent) !important; color: var(--bg) !important;
  padding: 9px 22px !important; border-radius: 6px;
  font-weight: 600 !important; font-size: 13px !important;
  letter-spacing: 0.3px !important;
  transition: all 0.2s !important;
}
.nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; margin-left: auto; }
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: var(--text);
  margin: 5px 0; transition: 0.2s;
}

/* ---- LOGO ---- */
.logo-img { height: 48px; width: auto; flex-shrink: 0; }
.logo-img.small { height: 30px; width: auto; }

/* ---- HERO ---- */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding: 120px 0 80px;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 70%);
}
.hero-content { max-width: 700px; position: relative; z-index: 1; }
.hero-tag {
  color: var(--accent); font-size: 13px; font-weight: 600;
  letter-spacing: 3px; text-transform: uppercase; margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(40px, 7vw, 72px); font-weight: 800;
  line-height: 1.08; margin-bottom: 24px;
  letter-spacing: -1px;
}
.hero-sub {
  font-size: 18px; color: var(--text2); max-width: 540px;
  margin-bottom: 40px; line-height: 1.7;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---- BUTTONS ---- */
.btn {
  display: inline-block; padding: 14px 32px; border-radius: var(--radius);
  font-size: 15px; font-weight: 600; text-decoration: none;
  transition: all 0.2s; cursor: pointer; border: none;
}
.btn-primary { background: var(--accent); color: var(--bg); }
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-outline {
  background: transparent; color: var(--text);
  border: 1px solid rgba(255,255,255,0.15);
}
.btn-outline:hover { border-color: rgba(255,255,255,0.3); }
.btn-lg { padding: 18px 40px; font-size: 16px; }

/* ---- SOLUTIONS ---- */
.solutions { padding: 120px 0; }
.section-tag {
  color: var(--accent); font-size: 13px; font-weight: 600;
  letter-spacing: 3px; text-transform: uppercase; margin-bottom: 16px;
}
.solutions h2, .edge h2, .about h2, .contact h2 {
  font-size: clamp(28px, 4vw, 42px); font-weight: 800;
  margin-bottom: 16px; letter-spacing: -0.5px;
}
.section-sub {
  color: var(--text2); font-size: 17px; max-width: 560px; margin-bottom: 56px;
}
.cards {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.card {
  background: var(--bg2); border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px; padding: 32px;
  transition: border-color 0.3s, transform 0.3s;
}
.card:hover {
  border-color: rgba(74, 158, 255, 0.25);
  transform: translateY(-2px);
}
.card-icon {
  width: 44px; height: 44px; margin-bottom: 20px;
  color: var(--accent);
}
.card-icon svg { width: 100%; height: 100%; }
.card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.card p { color: var(--text2); font-size: 14px; line-height: 1.7; }

/* ---- EDGE AI ---- */
.edge {
  padding: 120px 0;
  background: var(--bg2);
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.edge-layout {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: center;
}
.edge-text p { color: var(--text2); font-size: 16px; line-height: 1.7; margin-bottom: 32px; }
.edge-list { list-style: none; }
.edge-list li {
  padding: 10px 0; font-size: 15px; color: var(--text2);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  padding-left: 20px; position: relative;
}
.edge-list li::before {
  content: ''; position: absolute; left: 0; top: 50%;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent2); transform: translateY(-50%);
}

/* Node diagram */
.edge-visual { display: flex; justify-content: center; }
.node-diagram {
  width: 280px; height: 280px; position: relative;
}
.orbit-ring {
  position: absolute; inset: 20px;
  border: 1px solid rgba(74, 158, 255, 0.15);
  border-radius: 50%;
}
.node {
  position: absolute; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.node-center {
  width: 72px; height: 72px;
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  font-weight: 800; font-size: 18px; color: var(--bg);
  box-shadow: 0 0 40px rgba(74, 158, 255, 0.3);
}
.node-orbit {
  width: 16px; height: 16px;
  background: var(--accent2);
  box-shadow: 0 0 12px rgba(45, 212, 168, 0.4);
  animation: pulse 2s ease-in-out infinite;
}
.n1 { top: 20px; left: 50%; transform: translateX(-50%); }
.n2 { bottom: 20px; left: 50%; transform: translateX(-50%); animation-delay: 0.5s; }
.n3 { top: 50%; left: 20px; transform: translateY(-50%); animation-delay: 1s; }
.n4 { top: 50%; right: 20px; transform: translateY(-50%); animation-delay: 1.5s; }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: translateX(-50%) scale(1); }
  50% { opacity: 0.5; transform: translateX(-50%) scale(0.7); }
}
.n3 { animation-name: pulse-y; }
.n4 { animation-name: pulse-y; }
@keyframes pulse-y {
  0%, 100% { opacity: 1; transform: translateY(-50%) scale(1); }
  50% { opacity: 0.5; transform: translateY(-50%) scale(0.7); }
}

/* ---- ABOUT ---- */
.about { padding: 120px 0; }
.about-layout {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px;
}
.about-text p {
  color: var(--text2); font-size: 15px; line-height: 1.8;
  margin-bottom: 20px;
}

/* ---- CONTACT ---- */
.contact {
  padding: 120px 0;
  background: var(--bg2);
  border-top: 1px solid rgba(255,255,255,0.04);
  text-align: center;
}
.contact-inner { max-width: 600px; margin: 0 auto; }
.contact p { color: var(--text2); font-size: 17px; margin-bottom: 32px; }

/* ---- FOOTER ---- */
footer {
  padding: 32px 0;
  border-top: 1px solid rgba(255,255,255,0.04);
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
}
.footer-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 13px; letter-spacing: 2px;
}
.footer-copy { color: var(--text2); font-size: 13px; }

/* ---- MOBILE ---- */
@media (max-width: 580px) {
  .nav-links:not(.open) { display: none !important; }
  .nav-toggle { display: block !important; }
}

@media (max-width: 600px) {
  .cards { grid-template-columns: 1fr; }
  .nav-links.open {
    display: flex; flex-direction: column; align-items: flex-end;
    position: absolute; top: 72px; right: 0;
    background: rgba(10, 10, 15, 0.97); padding: 24px 32px;
    border: 1px solid rgba(255,255,255,0.08); border-top: none;
    border-radius: 0 0 0 8px;
    gap: 20px; backdrop-filter: blur(20px);
    white-space: normal; flex-shrink: 0;
    min-width: 200px;
  }
  .nav-toggle { display: block; }
}

@media (max-width: 768px) {
  .edge-layout, .about-layout {
    grid-template-columns: 1fr; gap: 40px;
  }
  .edge-visual { order: -1; }
  .hero { padding: 100px 0 60px; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }

  .hero h1 { font-size: clamp(32px, 8vw, 56px); }
}