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

:root {
  --bg: #070b14;
  --bg-2: #0b1120;
  --fg: #e8f0fe;
  --fg-2: #8a9bbf;
  --cyan: #00d4ff;
  --cyan-dim: rgba(0, 212, 255, 0.12);
  --cyan-border: rgba(0, 212, 255, 0.25);
  --card-bg: rgba(11, 17, 32, 0.8);
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* === NAV === */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 40px;
  backdrop-filter: blur(12px);
  background: rgba(7, 11, 20, 0.85);
  border-bottom: 1px solid rgba(0, 212, 255, 0.08);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--fg);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  color: var(--fg-2);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--cyan); }

/* === HERO === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 40px 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
}
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
}
.glow-1 {
  width: 500px; height: 500px;
  top: -100px; right: -50px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.12) 0%, transparent 70%);
}
.glow-2 {
  width: 400px; height: 400px;
  bottom: 50px; left: -100px;
  background: radial-gradient(circle, rgba(0, 100, 255, 0.08) 0%, transparent 70%);
}
.hero-inner {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--cyan-dim);
  border: 1px solid var(--cyan-border);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--cyan);
  margin-bottom: 28px;
  letter-spacing: 0.02em;
}
.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(3rem, 5vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  color: var(--fg);
}
.hero-headline em {
  font-style: normal;
  background: linear-gradient(135deg, #00d4ff, #0099ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-2);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 480px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}
.btn {
  display: inline-flex;
  align-items: center;
  padding: 14px 28px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
}
.btn-primary {
  background: var(--cyan);
  color: #000;
  font-weight: 600;
}
.btn-primary:hover {
  background: #33ddff;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.25);
}
.btn-ghost {
  background: transparent;
  color: var(--fg-2);
  border: 1px solid rgba(255,255,255,0.1);
}
.btn-ghost:hover {
  border-color: var(--cyan-border);
  color: var(--cyan);
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 24px;
}
.meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.meta-number {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cyan);
}
.meta-label {
  font-size: 0.8rem;
  color: var(--fg-2);
}
.meta-divider {
  width: 1px;
  height: 36px;
  background: rgba(255,255,255,0.1);
}

/* === AGENT VISUAL === */
.agent-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.agent-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
}
.agent-node {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.agent-node .node-ring {
  width: 80px; height: 80px;
  border-radius: 50%;
  border: 1.5px solid var(--cyan-border);
  background: var(--cyan-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: ring-pulse 3s ease-in-out infinite;
}
.n1 { top: 10%; left: 50%; transform: translateX(-50%); }
.n2 { top: 40%; right: 5%; }
.n3 { bottom: 10%; left: 50%; transform: translateX(-50%); }
.n4 { top: 40%; left: 5%; }
.n1 .node-ring { animation-delay: 0s; }
.n2 .node-ring { animation-delay: 0.75s; }
.n3 .node-ring { animation-delay: 1.5s; }
.n4 .node-ring { animation-delay: 2.25s; }
@keyframes ring-pulse {
  0%, 100% { border-color: var(--cyan-border); transform: scale(1); }
  50% { border-color: var(--cyan); transform: scale(1.05); }
}
.node-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--fg-2);
  letter-spacing: 0.03em;
  background: var(--bg);
  padding: 2px 8px;
  border-radius: 4px;
}
.connections {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* === SECTIONS === */
section { padding: 100px 40px; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 16px;
}
.section-headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
}
.section-sub {
  color: var(--fg-2);
  font-size: 1.05rem;
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: 60px;
}

/* === HOW === */
.how { background: var(--bg-2); }
.steps-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 24px;
}
.step {
  background: var(--card-bg);
  border: 1px solid rgba(0, 212, 255, 0.1);
  border-radius: 16px;
  padding: 32px;
}
.step-number {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cyan);
  margin-bottom: 16px;
  letter-spacing: 0.1em;
}
.step h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--fg);
}
.step p {
  color: var(--fg-2);
  font-size: 0.9rem;
  line-height: 1.6;
}
.step-connector { display: flex; align-items: center; justify-content: center; }

/* === ROLES === */
.roles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.role-card {
  background: var(--card-bg);
  border: 1px solid rgba(0, 212, 255, 0.1);
  border-radius: 20px;
  padding: 32px;
  transition: all 0.25s;
}
.role-card:hover {
  border-color: var(--cyan-border);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}
.role-icon {
  width: 56px; height: 56px;
  background: var(--cyan-dim);
  border: 1px solid var(--cyan-border);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}
.role-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--fg);
}
.role-card > p {
  color: var(--fg-2);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 20px;
}
.role-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.role-features li {
  font-size: 0.85rem;
  color: var(--fg-2);
  padding-left: 20px;
  position: relative;
}
.role-features li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: 0.7;
}

/* === DIFFERENCE === */
.difference { background: var(--bg-2); }
.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.diff-points { display: flex; flex-direction: column; gap: 24px; margin-top: 40px; }
.diff-point {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.point-check {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--cyan-dim);
  border: 1px solid var(--cyan-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.diff-point strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 4px;
  font-size: 0.95rem;
}
.diff-point p { color: var(--fg-2); font-size: 0.88rem; line-height: 1.5; }
.comparison-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 16px;
  overflow: hidden;
  margin-top: 40px;
}
.comp-col { padding: 28px; background: var(--bg); }
.comp-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin-bottom: 20px;
}
.comp-col-cyan .comp-label { color: var(--cyan); }
.comp-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--fg-2);
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.comp-item:last-child { border-bottom: none; }

/* === CLOSING === */
.closing-statement {
  padding: 120px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.closing-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 600px; height: 300px;
  background: radial-gradient(ellipse, rgba(0, 212, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}
.closing-text {
  position: relative;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.02em;
  color: var(--fg);
  max-width: 800px;
  margin: 0 auto 24px;
}
.closing-sub {
  position: relative;
  color: var(--fg-2);
  font-size: 1.05rem;
}

/* === FOOTER === */
.footer {
  padding: 40px;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--fg);
}
.footer-tagline {
  font-size: 0.85rem;
  color: var(--fg-2);
}
.footer-legal {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.2);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .nav { padding: 16px 20px; }
  .nav-links { display: none; }
  .hero { padding: 100px 20px 60px; }
  .hero-inner { grid-template-columns: 1fr; gap: 60px; }
  .hero-right { display: none; }
  section { padding: 80px 20px; }
  .steps-grid { grid-template-columns: 1fr; gap: 16px; }
  .step-connector { display: none; }
  .diff-grid { grid-template-columns: 1fr; gap: 40px; }
  .comparison-block { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .btn { padding: 12px 20px; font-size: 0.9rem; }
}